diff options
Diffstat (limited to 'drivers/rtc')
108 files changed, 2285 insertions, 2045 deletions
diff --git a/drivers/rtc/Kconfig b/drivers/rtc/Kconfig index e72f65b61176..34c8b6c7e095 100644 --- a/drivers/rtc/Kconfig +++ b/drivers/rtc/Kconfig @@ -240,6 +240,7 @@ config RTC_DRV_AS3722 config RTC_DRV_DS1307 tristate "Dallas/Maxim DS1307/37/38/39/40/41, ST M41T00, EPSON RX-8025, ISL12057" + select REGMAP_I2C help If you say yes here you get support for various compatible RTC chips (often with battery backup) connected with I2C. This driver @@ -498,11 +499,13 @@ config RTC_DRV_M41T80_WDT help If you say Y here you will get support for the watchdog timer in the ST M41T60 and M41T80 RTC chips series. + config RTC_DRV_BD70528 tristate "ROHM BD70528 PMIC RTC" + depends on MFD_ROHM_BD70528 && (BD70528_WATCHDOG || !BD70528_WATCHDOG) help If you say Y here you will get support for the RTC - on ROHM BD70528 Power Management IC. + block on ROHM BD70528 and BD71828 Power Management IC. This driver can also be built as a module. If so, the module will be called rtc-bd70528. @@ -620,6 +623,7 @@ config RTC_DRV_RX8010 config RTC_DRV_RX8581 tristate "Epson RX-8571/RX-8581" + select REGMAP_I2C help If you say yes here you will get support for the Epson RX-8571/ RX-8581. @@ -647,6 +651,7 @@ config RTC_DRV_EM3027 config RTC_DRV_RV3028 tristate "Micro Crystal RV3028" + select REGMAP_I2C help If you say yes here you get support for the Micro Crystal RV3028. @@ -675,13 +680,14 @@ config RTC_DRV_S5M will be called rtc-s5m. config RTC_DRV_SD3078 - tristate "ZXW Shenzhen whwave SD3078" - help - If you say yes here you get support for the ZXW Shenzhen whwave - SD3078 RTC chips. + tristate "ZXW Shenzhen whwave SD3078" + select REGMAP_I2C + help + If you say yes here you get support for the ZXW Shenzhen whwave + SD3078 RTC chips. - This driver can also be built as a module. If so, the module - will be called rtc-sd3078 + This driver can also be built as a module. If so, the module + will be called rtc-sd3078 endif # I2C @@ -847,14 +853,14 @@ config RTC_I2C_AND_SPI default m if I2C=m default y if I2C=y default y if SPI_MASTER=y - select REGMAP_I2C if I2C - select REGMAP_SPI if SPI_MASTER comment "SPI and I2C RTC drivers" config RTC_DRV_DS3232 tristate "Dallas/Maxim DS3232/DS3234" depends on RTC_I2C_AND_SPI + select REGMAP_I2C if I2C + select REGMAP_SPI if SPI_MASTER help If you say yes here you get support for Dallas Semiconductor DS3232 and DS3234 real-time clock chips. If an interrupt is associated @@ -874,9 +880,17 @@ config RTC_DRV_DS3232_HWMON config RTC_DRV_PCF2127 tristate "NXP PCF2127" depends on RTC_I2C_AND_SPI + select REGMAP_I2C if I2C + select REGMAP_SPI if SPI_MASTER + select WATCHDOG_CORE if WATCHDOG help If you say yes here you get support for the NXP PCF2127/29 RTC - chips. + chips with integrated quartz crystal for industrial applications. + Both chips also have watchdog timer and tamper switch detection + features. + + PCF2127 has an additional feature of 512 bytes battery backed + memory that's accessible using nvmem interface. This driver can also be built as a module. If so, the module will be called rtc-pcf2127. @@ -884,6 +898,8 @@ config RTC_DRV_PCF2127 config RTC_DRV_RV3029C2 tristate "Micro Crystal RV3029/3049" depends on RTC_I2C_AND_SPI + select REGMAP_I2C if I2C + select REGMAP_SPI if SPI_MASTER help If you say yes here you get support for the Micro Crystal RV3029 and RV3049 RTC chips. @@ -1247,13 +1263,6 @@ config RTC_DRV_AB8500 Select this to enable the ST-Ericsson AB8500 power management IC RTC support. This chip contains a battery- and capacitor-backed RTC. -config RTC_DRV_NUC900 - tristate "NUC910/NUC920 RTC driver" - depends on ARCH_W90X900 || COMPILE_TEST - help - If you say yes here you get support for the RTC subsystem of the - NUC910/NUC920 used in embedded systems. - config RTC_DRV_OPAL tristate "IBM OPAL RTC driver" depends on PPC_POWERNV @@ -1274,7 +1283,7 @@ config RTC_DRV_ZYNQMP config RTC_DRV_CROS_EC tristate "Chrome OS EC RTC driver" - depends on MFD_CROS_EC + depends on CROS_EC help If you say yes here you will get support for the Chrome OS Embedded Controller's RTC. @@ -1323,6 +1332,19 @@ config RTC_DRV_IMXDI This driver can also be built as a module, if so, the module will be called "rtc-imxdi". +config RTC_DRV_FSL_FTM_ALARM + tristate "Freescale FlexTimer alarm timer" + depends on ARCH_LAYERSCAPE || SOC_LS1021A + help + For the FlexTimer in LS1012A, LS1021A, LS1028A, LS1043A, LS1046A, + LS1088A, LS208xA, we can use FTM as the wakeup source. + + Say y here to enable FTM alarm support. The FTM alarm provides + alarm functions for wakeup system from deep sleep. + + This driver can also be built as a module, if so, the module + will be called "rtc-fsl-ftm-alarm". + config RTC_DRV_MESON tristate "Amlogic Meson RTC" depends on (ARM && ARCH_MESON) || COMPILE_TEST @@ -1334,6 +1356,17 @@ config RTC_DRV_MESON This driver can also be built as a module, if so, the module will be called "rtc-meson". +config RTC_DRV_MESON_VRTC + tristate "Amlogic Meson Virtual RTC" + depends on ARCH_MESON || COMPILE_TEST + default m if ARCH_MESON + help + If you say yes here you will get support for the + Virtual RTC of Amlogic SoCs. + + This driver can also be built as a module. If so, the module + will be called rtc-meson-vrtc. + config RTC_DRV_OMAP tristate "TI OMAP Real Time Clock" depends on ARCH_OMAP || ARCH_DAVINCI || COMPILE_TEST @@ -1433,6 +1466,7 @@ config RTC_DRV_PL031 config RTC_DRV_AT91RM9200 tristate "AT91RM9200 or some AT91SAM9 RTC" depends on ARCH_AT91 || COMPILE_TEST + depends on OF help Driver for the internal RTC (Realtime Clock) module found on Atmel AT91RM9200's and some AT91SAM9 chips. On AT91SAM9 chips @@ -1484,9 +1518,9 @@ config RTC_DRV_PXA depends on ARCH_PXA select RTC_DRV_SA1100 help - If you say Y here you will get access to the real time clock - built into your PXA27x or PXA3xx CPU. This RTC is actually 2 RTCs - consisting of an SA1100 compatible RTC and the extended PXA RTC. + If you say Y here you will get access to the real time clock + built into your PXA27x or PXA3xx CPU. This RTC is actually 2 RTCs + consisting of an SA1100 compatible RTC and the extended PXA RTC. This RTC driver uses PXA RTC registers available since pxa27x series (RDxR, RYxR) instead of legacy RCNR, RTAR. diff --git a/drivers/rtc/Makefile b/drivers/rtc/Makefile index 6b09c21dc1b6..4ac8f19fb631 100644 --- a/drivers/rtc/Makefile +++ b/drivers/rtc/Makefile @@ -73,6 +73,7 @@ obj-$(CONFIG_RTC_DRV_EFI) += rtc-efi.o obj-$(CONFIG_RTC_DRV_EM3027) += rtc-em3027.o obj-$(CONFIG_RTC_DRV_EP93XX) += rtc-ep93xx.o obj-$(CONFIG_RTC_DRV_FM3130) += rtc-fm3130.o +obj-$(CONFIG_RTC_DRV_FSL_FTM_ALARM) += rtc-fsl-ftm-alarm.o obj-$(CONFIG_RTC_DRV_FTRTC010) += rtc-ftrtc010.o obj-$(CONFIG_RTC_DRV_GENERIC) += rtc-generic.o obj-$(CONFIG_RTC_DRV_GOLDFISH) += rtc-goldfish.o @@ -102,6 +103,7 @@ obj-$(CONFIG_RTC_DRV_MAX8907) += rtc-max8907.o obj-$(CONFIG_RTC_DRV_MAX8925) += rtc-max8925.o obj-$(CONFIG_RTC_DRV_MAX8997) += rtc-max8997.o obj-$(CONFIG_RTC_DRV_MAX8998) += rtc-max8998.o +obj-$(CONFIG_RTC_DRV_MESON_VRTC)+= rtc-meson-vrtc.o obj-$(CONFIG_RTC_DRV_MC13XXX) += rtc-mc13xxx.o obj-$(CONFIG_RTC_DRV_MCP795) += rtc-mcp795.o obj-$(CONFIG_RTC_DRV_MESON) += rtc-meson.o @@ -113,7 +115,6 @@ obj-$(CONFIG_RTC_DRV_MT7622) += rtc-mt7622.o obj-$(CONFIG_RTC_DRV_MV) += rtc-mv.o obj-$(CONFIG_RTC_DRV_MXC) += rtc-mxc.o obj-$(CONFIG_RTC_DRV_MXC_V2) += rtc-mxc_v2.o -obj-$(CONFIG_RTC_DRV_NUC900) += rtc-nuc900.o obj-$(CONFIG_RTC_DRV_OMAP) += rtc-omap.o obj-$(CONFIG_RTC_DRV_OPAL) += rtc-opal.o obj-$(CONFIG_RTC_DRV_PALMAS) += rtc-palmas.o diff --git a/drivers/rtc/class.c b/drivers/rtc/class.c index 0f492b0940b3..9458e6d6686a 100644 --- a/drivers/rtc/class.c +++ b/drivers/rtc/class.c @@ -346,8 +346,10 @@ int __rtc_register_device(struct module *owner, struct rtc_device *rtc) struct rtc_wkalrm alrm; int err; - if (!rtc->ops) + if (!rtc->ops) { + dev_dbg(&rtc->dev, "no ops set\n"); return -EINVAL; + } rtc->owner = owner; rtc_device_get_offset(rtc); diff --git a/drivers/rtc/dev.c b/drivers/rtc/dev.c index 84feb2565abd..5b8ebe86124a 100644 --- a/drivers/rtc/dev.c +++ b/drivers/rtc/dev.c @@ -10,6 +10,7 @@ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt +#include <linux/compat.h> #include <linux/module.h> #include <linux/rtc.h> #include <linux/sched/signal.h> @@ -360,7 +361,6 @@ static long rtc_dev_ioctl(struct file *file, case RTC_IRQP_SET: err = rtc_irq_set_freq(rtc, arg); break; - case RTC_IRQP_READ: err = put_user(rtc->irq_freq, (unsigned long __user *)uarg); break; @@ -399,6 +399,34 @@ done: return err; } +#ifdef CONFIG_COMPAT +#define RTC_IRQP_SET32 _IOW('p', 0x0c, __u32) +#define RTC_IRQP_READ32 _IOR('p', 0x0b, __u32) +#define RTC_EPOCH_SET32 _IOW('p', 0x0e, __u32) + +static long rtc_dev_compat_ioctl(struct file *file, + unsigned int cmd, unsigned long arg) +{ + struct rtc_device *rtc = file->private_data; + void __user *uarg = compat_ptr(arg); + + switch (cmd) { + case RTC_IRQP_READ32: + return put_user(rtc->irq_freq, (__u32 __user *)uarg); + + case RTC_IRQP_SET32: + /* arg is a plain integer, not pointer */ + return rtc_dev_ioctl(file, RTC_IRQP_SET, arg); + + case RTC_EPOCH_SET32: + /* arg is a plain integer, not pointer */ + return rtc_dev_ioctl(file, RTC_EPOCH_SET, arg); + } + + return rtc_dev_ioctl(file, cmd, (unsigned long)uarg); +} +#endif + static int rtc_dev_fasync(int fd, struct file *file, int on) { struct rtc_device *rtc = file->private_data; @@ -434,6 +462,9 @@ static const struct file_operations rtc_dev_fops = { .read = rtc_dev_read, .poll = rtc_dev_poll, .unlocked_ioctl = rtc_dev_ioctl, +#ifdef CONFIG_COMPAT + .compat_ioctl = rtc_dev_compat_ioctl, +#endif .open = rtc_dev_open, .release = rtc_dev_release, .fasync = rtc_dev_fasync, diff --git a/drivers/rtc/interface.c b/drivers/rtc/interface.c index 72b7ddc43116..794a4f036b99 100644 --- a/drivers/rtc/interface.c +++ b/drivers/rtc/interface.c @@ -70,7 +70,7 @@ static int rtc_valid_range(struct rtc_device *rtc, struct rtc_time *tm) time64_t time = rtc_tm_to_time64(tm); time64_t range_min = rtc->set_start_time ? rtc->start_secs : rtc->range_min; - time64_t range_max = rtc->set_start_time ? + timeu64_t range_max = rtc->set_start_time ? (rtc->start_secs + rtc->range_max - rtc->range_min) : rtc->range_max; @@ -125,7 +125,7 @@ EXPORT_SYMBOL_GPL(rtc_read_time); int rtc_set_time(struct rtc_device *rtc, struct rtc_time *tm) { - int err; + int err, uie; err = rtc_valid_tm(tm); if (err != 0) @@ -137,6 +137,17 @@ int rtc_set_time(struct rtc_device *rtc, struct rtc_time *tm) rtc_subtract_offset(rtc, tm); +#ifdef CONFIG_RTC_INTF_DEV_UIE_EMUL + uie = rtc->uie_rtctimer.enabled || rtc->uie_irq_active; +#else + uie = rtc->uie_rtctimer.enabled; +#endif + if (uie) { + err = rtc_update_irq_enable(rtc, 0); + if (err) + return err; + } + err = mutex_lock_interruptible(&rtc->ops_lock); if (err) return err; @@ -153,6 +164,12 @@ int rtc_set_time(struct rtc_device *rtc, struct rtc_time *tm) /* A timer might have just expired */ schedule_work(&rtc->irqwork); + if (uie) { + err = rtc_update_irq_enable(rtc, 1); + if (err) + return err; + } + trace_rtc_set_time(rtc_tm_to_time64(tm), err); return err; } @@ -528,7 +545,7 @@ EXPORT_SYMBOL_GPL(rtc_alarm_irq_enable); int rtc_update_irq_enable(struct rtc_device *rtc, unsigned int enabled) { - int err; + int rc = 0, err; err = mutex_lock_interruptible(&rtc->ops_lock); if (err) @@ -553,7 +570,9 @@ int rtc_update_irq_enable(struct rtc_device *rtc, unsigned int enabled) struct rtc_time tm; ktime_t now, onesec; - __rtc_read_time(rtc, &tm); + rc = __rtc_read_time(rtc, &tm); + if (rc) + goto out; onesec = ktime_set(1, 0); now = rtc_tm_to_ktime(tm); rtc->uie_rtctimer.node.expires = ktime_add(now, onesec); @@ -565,6 +584,16 @@ int rtc_update_irq_enable(struct rtc_device *rtc, unsigned int enabled) out: mutex_unlock(&rtc->ops_lock); + + /* + * __rtc_read_time() failed, this probably means that the RTC time has + * never been set or less probably there is a transient error on the + * bus. In any case, avoid enabling emulation has this will fail when + * reading the time too. + */ + if (rc) + return rc; + #ifdef CONFIG_RTC_INTF_DEV_UIE_EMUL /* * Enable emulation if the driver returned -EINVAL to signal that it has @@ -581,6 +610,8 @@ EXPORT_SYMBOL_GPL(rtc_update_irq_enable); /** * rtc_handle_legacy_irq - AIE, UIE and PIE event hook * @rtc: pointer to the rtc device + * @num: number of occurence of the event + * @mode: type of the event, RTC_AF, RTC_UF of RTC_PF * * This function is called when an AIE, UIE or PIE mode interrupt * has occurred (or been emulated). @@ -663,21 +694,12 @@ void rtc_update_irq(struct rtc_device *rtc, } EXPORT_SYMBOL_GPL(rtc_update_irq); -static int __rtc_match(struct device *dev, const void *data) -{ - const char *name = data; - - if (strcmp(dev_name(dev), name) == 0) - return 1; - return 0; -} - struct rtc_device *rtc_class_open(const char *name) { struct device *dev; struct rtc_device *rtc = NULL; - dev = class_find_device(rtc_class, NULL, name, __rtc_match); + dev = class_find_device_by_name(rtc_class, name); if (dev) rtc = to_rtc_device(dev); @@ -770,8 +792,8 @@ int rtc_irq_set_freq(struct rtc_device *rtc, int freq) /** * rtc_timer_enqueue - Adds a rtc_timer to the rtc_device timerqueue - * @rtc rtc device - * @timer timer being added. + * @rtc: rtc device + * @timer: timer being added. * * Enqueues a timer onto the rtc devices timerqueue and sets * the next alarm event appropriately. @@ -830,8 +852,8 @@ static void rtc_alarm_disable(struct rtc_device *rtc) /** * rtc_timer_remove - Removes a rtc_timer from the rtc_device timerqueue - * @rtc rtc device - * @timer timer being removed. + * @rtc: rtc device + * @timer: timer being removed. * * Removes a timer onto the rtc devices timerqueue and sets * the next alarm event appropriately. @@ -868,8 +890,7 @@ static void rtc_timer_remove(struct rtc_device *rtc, struct rtc_timer *timer) /** * rtc_timer_do_work - Expires rtc timers - * @rtc rtc device - * @timer timer being removed. + * @work: work item * * Expires rtc timers. Reprograms next alarm event if needed. * Called via worktask. @@ -1002,8 +1023,8 @@ void rtc_timer_cancel(struct rtc_device *rtc, struct rtc_timer *timer) /** * rtc_read_offset - Read the amount of rtc offset in parts per billion - * @ rtc: rtc device to be used - * @ offset: the offset in parts per billion + * @rtc: rtc device to be used + * @offset: the offset in parts per billion * * see below for details. * @@ -1031,8 +1052,8 @@ int rtc_read_offset(struct rtc_device *rtc, long *offset) /** * rtc_set_offset - Adjusts the duration of the average second - * @ rtc: rtc device to be used - * @ offset: the offset in parts per billion + * @rtc: rtc device to be used + * @offset: the offset in parts per billion * * Some rtc's allow an adjustment to the average duration of a second * to compensate for differences in the actual clock rate due to temperature, diff --git a/drivers/rtc/rtc-88pm80x.c b/drivers/rtc/rtc-88pm80x.c index e4d5a19fd1c9..75779e8501a3 100644 --- a/drivers/rtc/rtc-88pm80x.c +++ b/drivers/rtc/rtc-88pm80x.c @@ -264,7 +264,6 @@ static int pm80x_rtc_probe(struct platform_device *pdev) return -ENOMEM; info->irq = platform_get_irq(pdev, 0); if (info->irq < 0) { - dev_err(&pdev->dev, "No IRQ resource!\n"); ret = -EINVAL; goto out; } @@ -296,10 +295,9 @@ static int pm80x_rtc_probe(struct platform_device *pdev) info->rtc_dev->range_max = U32_MAX; ret = rtc_register_device(info->rtc_dev); - if (ret) { - dev_err(&pdev->dev, "Failed to register RTC device: %d\n", ret); + if (ret) goto out_rtc; - } + /* * enable internal XO instead of internal 3.25MHz clock since it can * free running in PMIC power-down state. diff --git a/drivers/rtc/rtc-88pm860x.c b/drivers/rtc/rtc-88pm860x.c index 434285f495e0..4743b16a8d84 100644 --- a/drivers/rtc/rtc-88pm860x.c +++ b/drivers/rtc/rtc-88pm860x.c @@ -328,10 +328,8 @@ static int pm860x_rtc_probe(struct platform_device *pdev) if (!info) return -ENOMEM; info->irq = platform_get_irq(pdev, 0); - if (info->irq < 0) { - dev_err(&pdev->dev, "No IRQ resource!\n"); + if (info->irq < 0) return info->irq; - } info->chip = chip; info->i2c = (chip->id == CHIP_PM8607) ? chip->client : chip->companion; diff --git a/drivers/rtc/rtc-ab-b5ze-s3.c b/drivers/rtc/rtc-ab-b5ze-s3.c index cdad6f00debf..811fe2005488 100644 --- a/drivers/rtc/rtc-ab-b5ze-s3.c +++ b/drivers/rtc/rtc-ab-b5ze-s3.c @@ -900,16 +900,6 @@ err: return ret; } -static int abb5zes3_remove(struct i2c_client *client) -{ - struct abb5zes3_rtc_data *rtc_data = dev_get_drvdata(&client->dev); - - if (rtc_data->irq > 0) - device_init_wakeup(&client->dev, false); - - return 0; -} - #ifdef CONFIG_PM_SLEEP static int abb5zes3_rtc_suspend(struct device *dev) { @@ -956,7 +946,6 @@ static struct i2c_driver abb5zes3_driver = { .of_match_table = of_match_ptr(abb5zes3_dt_match), }, .probe = abb5zes3_probe, - .remove = abb5zes3_remove, .id_table = abb5zes3_id, }; module_i2c_driver(abb5zes3_driver); diff --git a/drivers/rtc/rtc-ab-eoz9.c b/drivers/rtc/rtc-ab-eoz9.c index e4f6e0061ccf..d690985caa4c 100644 --- a/drivers/rtc/rtc-ab-eoz9.c +++ b/drivers/rtc/rtc-ab-eoz9.c @@ -390,35 +390,31 @@ static int abeoz9_probe(struct i2c_client *client, if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C | I2C_FUNC_SMBUS_BYTE_DATA | - I2C_FUNC_SMBUS_I2C_BLOCK)) { - ret = -ENODEV; - goto err; - } + I2C_FUNC_SMBUS_I2C_BLOCK)) + return -ENODEV; regmap = devm_regmap_init_i2c(client, &abeoz9_rtc_regmap_config); if (IS_ERR(regmap)) { ret = PTR_ERR(regmap); dev_err(dev, "regmap allocation failed: %d\n", ret); - goto err; + return ret; } data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL); - if (!data) { - ret = -ENOMEM; - goto err; - } + if (!data) + return -ENOMEM; data->regmap = regmap; dev_set_drvdata(dev, data); ret = abeoz9_rtc_setup(dev, client->dev.of_node); if (ret) - goto err; + return ret; data->rtc = devm_rtc_allocate_device(dev); ret = PTR_ERR_OR_ZERO(data->rtc); if (ret) - goto err; + return ret; data->rtc->ops = &rtc_ops; data->rtc->range_min = RTC_TIMESTAMP_BEGIN_2000; @@ -426,14 +422,10 @@ static int abeoz9_probe(struct i2c_client *client, ret = rtc_register_device(data->rtc); if (ret) - goto err; + return ret; abeoz9_hwmon_register(dev, data); return 0; - -err: - dev_err(dev, "unable to register RTC device (%d)\n", ret); - return ret; } #ifdef CONFIG_OF diff --git a/drivers/rtc/rtc-abx80x.c b/drivers/rtc/rtc-abx80x.c index 73830670a41f..3521d8e8dc38 100644 --- a/drivers/rtc/rtc-abx80x.c +++ b/drivers/rtc/rtc-abx80x.c @@ -523,12 +523,9 @@ static int abx80x_ioctl(struct device *dev, unsigned int cmd, unsigned long arg) if (status < 0) return status; - tmp = !!(status & ABX8XX_STATUS_BLF); + tmp = status & ABX8XX_STATUS_BLF ? RTC_VL_BACKUP_LOW : 0; - if (copy_to_user((void __user *)arg, &tmp, sizeof(int))) - return -EFAULT; - - return 0; + return put_user(tmp, (unsigned int __user *)arg); case RTC_VL_CLR: status = i2c_smbus_read_byte_data(client, ABX8XX_REG_STATUS); diff --git a/drivers/rtc/rtc-ac100.c b/drivers/rtc/rtc-ac100.c index 2e5a8b15b222..29223931aba7 100644 --- a/drivers/rtc/rtc-ac100.c +++ b/drivers/rtc/rtc-ac100.c @@ -578,10 +578,8 @@ static int ac100_rtc_probe(struct platform_device *pdev) chip->regmap = ac100->regmap; chip->irq = platform_get_irq(pdev, 0); - if (chip->irq < 0) { - dev_err(&pdev->dev, "No IRQ resource\n"); + if (chip->irq < 0) return chip->irq; - } chip->rtc = devm_rtc_allocate_device(&pdev->dev); if (IS_ERR(chip->rtc)) @@ -612,15 +610,7 @@ static int ac100_rtc_probe(struct platform_device *pdev) if (ret) return ret; - ret = rtc_register_device(chip->rtc); - if (ret) { - dev_err(&pdev->dev, "unable to register device\n"); - return ret; - } - - dev_info(&pdev->dev, "RTC enabled\n"); - - return 0; + return rtc_register_device(chip->rtc); } static int ac100_rtc_remove(struct platform_device *pdev) diff --git a/drivers/rtc/rtc-armada38x.c b/drivers/rtc/rtc-armada38x.c index 19d6980e90fb..94d7c22fc4f3 100644 --- a/drivers/rtc/rtc-armada38x.c +++ b/drivers/rtc/rtc-armada38x.c @@ -74,7 +74,7 @@ struct armada38x_rtc { int irq; bool initialized; struct value_to_freq *val_to_freq; - struct armada38x_rtc_data *data; + const struct armada38x_rtc_data *data; }; #define ALARM1 0 @@ -501,18 +501,14 @@ static __init int armada38x_rtc_probe(struct platform_device *pdev) { struct resource *res; struct armada38x_rtc *rtc; - const struct of_device_id *match; - int ret; - - match = of_match_device(armada38x_rtc_of_match_table, &pdev->dev); - if (!match) - return -ENODEV; rtc = devm_kzalloc(&pdev->dev, sizeof(struct armada38x_rtc), GFP_KERNEL); if (!rtc) return -ENOMEM; + rtc->data = of_device_get_match_data(&pdev->dev); + rtc->val_to_freq = devm_kcalloc(&pdev->dev, SAMPLE_NR, sizeof(struct value_to_freq), GFP_KERNEL); if (!rtc->val_to_freq) @@ -530,11 +526,8 @@ static __init int armada38x_rtc_probe(struct platform_device *pdev) return PTR_ERR(rtc->regs_soc); rtc->irq = platform_get_irq(pdev, 0); - - if (rtc->irq < 0) { - dev_err(&pdev->dev, "no irq\n"); + if (rtc->irq < 0) return rtc->irq; - } rtc->rtc_dev = devm_rtc_allocate_device(&pdev->dev); if (IS_ERR(rtc->rtc_dev)) @@ -557,18 +550,13 @@ static __init int armada38x_rtc_probe(struct platform_device *pdev) */ rtc->rtc_dev->ops = &armada38x_rtc_ops_noirq; } - rtc->data = (struct armada38x_rtc_data *)match->data; /* Update RTC-MBUS bridge timing parameters */ rtc->data->update_mbus_timing(rtc); rtc->rtc_dev->range_max = U32_MAX; - ret = rtc_register_device(rtc->rtc_dev); - if (ret) - dev_err(&pdev->dev, "Failed to register RTC device: %d\n", ret); - - return ret; + return rtc_register_device(rtc->rtc_dev); } #ifdef CONFIG_PM_SLEEP diff --git a/drivers/rtc/rtc-asm9260.c b/drivers/rtc/rtc-asm9260.c index d45a44936308..3ab81cdec00b 100644 --- a/drivers/rtc/rtc-asm9260.c +++ b/drivers/rtc/rtc-asm9260.c @@ -245,7 +245,6 @@ static int asm9260_rtc_probe(struct platform_device *pdev) { struct asm9260_rtc_priv *priv; struct device *dev = &pdev->dev; - struct resource *res; int irq_alarm, ret; u32 ccr; @@ -257,17 +256,17 @@ static int asm9260_rtc_probe(struct platform_device *pdev) platform_set_drvdata(pdev, priv); irq_alarm = platform_get_irq(pdev, 0); - if (irq_alarm < 0) { - dev_err(dev, "No alarm IRQ resource defined\n"); + if (irq_alarm < 0) return irq_alarm; - } - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - priv->iobase = devm_ioremap_resource(dev, res); + priv->iobase = devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(priv->iobase)) return PTR_ERR(priv->iobase); priv->clk = devm_clk_get(dev, "ahb"); + if (IS_ERR(priv->clk)) + return PTR_ERR(priv->clk); + ret = clk_prepare_enable(priv->clk); if (ret) { dev_err(dev, "Failed to enable clk!\n"); diff --git a/drivers/rtc/rtc-aspeed.c b/drivers/rtc/rtc-aspeed.c index af3eb676d7c3..eacdd0637cce 100644 --- a/drivers/rtc/rtc-aspeed.c +++ b/drivers/rtc/rtc-aspeed.c @@ -85,15 +85,12 @@ static const struct rtc_class_ops aspeed_rtc_ops = { static int aspeed_rtc_probe(struct platform_device *pdev) { struct aspeed_rtc *rtc; - struct resource *res; - int ret; rtc = devm_kzalloc(&pdev->dev, sizeof(*rtc), GFP_KERNEL); if (!rtc) return -ENOMEM; - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - rtc->base = devm_ioremap_resource(&pdev->dev, res); + rtc->base = devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(rtc->base)) return PTR_ERR(rtc->base); @@ -107,11 +104,7 @@ static int aspeed_rtc_probe(struct platform_device *pdev) rtc->rtc_dev->range_min = RTC_TIMESTAMP_BEGIN_1900; rtc->rtc_dev->range_max = 38814989399LL; /* 3199-12-31 23:59:59 */ - ret = rtc_register_device(rtc->rtc_dev); - if (ret) - return ret; - - return 0; + return rtc_register_device(rtc->rtc_dev); } static const struct of_device_id aspeed_rtc_match[] = { diff --git a/drivers/rtc/rtc-at91rm9200.c b/drivers/rtc/rtc-at91rm9200.c index 82a54e93ff04..5e811e04cb21 100644 --- a/drivers/rtc/rtc-at91rm9200.c +++ b/drivers/rtc/rtc-at91rm9200.c @@ -14,6 +14,7 @@ */ #include <linux/bcd.h> +#include <linux/bitfield.h> #include <linux/clk.h> #include <linux/completion.h> #include <linux/interrupt.h> @@ -30,7 +31,51 @@ #include <linux/time.h> #include <linux/uaccess.h> -#include "rtc-at91rm9200.h" +#define AT91_RTC_CR 0x00 /* Control Register */ +#define AT91_RTC_UPDTIM BIT(0) /* Update Request Time Register */ +#define AT91_RTC_UPDCAL BIT(1) /* Update Request Calendar Register */ + +#define AT91_RTC_MR 0x04 /* Mode Register */ + +#define AT91_RTC_TIMR 0x08 /* Time Register */ +#define AT91_RTC_SEC GENMASK(6, 0) /* Current Second */ +#define AT91_RTC_MIN GENMASK(14, 8) /* Current Minute */ +#define AT91_RTC_HOUR GENMASK(21, 16) /* Current Hour */ +#define AT91_RTC_AMPM BIT(22) /* Ante Meridiem Post Meridiem Indicator */ + +#define AT91_RTC_CALR 0x0c /* Calendar Register */ +#define AT91_RTC_CENT GENMASK(6, 0) /* Current Century */ +#define AT91_RTC_YEAR GENMASK(15, 8) /* Current Year */ +#define AT91_RTC_MONTH GENMASK(20, 16) /* Current Month */ +#define AT91_RTC_DAY GENMASK(23, 21) /* Current Day */ +#define AT91_RTC_DATE GENMASK(29, 24) /* Current Date */ + +#define AT91_RTC_TIMALR 0x10 /* Time Alarm Register */ +#define AT91_RTC_SECEN BIT(7) /* Second Alarm Enable */ +#define AT91_RTC_MINEN BIT(15) /* Minute Alarm Enable */ +#define AT91_RTC_HOUREN BIT(23) /* Hour Alarm Enable */ + +#define AT91_RTC_CALALR 0x14 /* Calendar Alarm Register */ +#define AT91_RTC_MTHEN BIT(23) /* Month Alarm Enable */ +#define AT91_RTC_DATEEN BIT(31) /* Date Alarm Enable */ + +#define AT91_RTC_SR 0x18 /* Status Register */ +#define AT91_RTC_ACKUPD BIT(0) /* Acknowledge for Update */ +#define AT91_RTC_ALARM BIT(1) /* Alarm Flag */ +#define AT91_RTC_SECEV BIT(2) /* Second Event */ +#define AT91_RTC_TIMEV BIT(3) /* Time Event */ +#define AT91_RTC_CALEV BIT(4) /* Calendar Event */ + +#define AT91_RTC_SCCR 0x1c /* Status Clear Command Register */ +#define AT91_RTC_IER 0x20 /* Interrupt Enable Register */ +#define AT91_RTC_IDR 0x24 /* Interrupt Disable Register */ +#define AT91_RTC_IMR 0x28 /* Interrupt Mask Register */ + +#define AT91_RTC_VER 0x2c /* Valid Entry Register */ +#define AT91_RTC_NVTIM BIT(0) /* Non valid Time */ +#define AT91_RTC_NVCAL BIT(1) /* Non valid Calendar */ +#define AT91_RTC_NVTIMALR BIT(2) /* Non valid Time Alarm */ +#define AT91_RTC_NVCALALR BIT(3) /* Non valid Calendar Alarm */ #define at91_rtc_read(field) \ readl_relaxed(at91_rtc_regs + field) @@ -117,20 +162,20 @@ static void at91_rtc_decodetime(unsigned int timereg, unsigned int calreg, } while ((time != at91_rtc_read(timereg)) || (date != at91_rtc_read(calreg))); - tm->tm_sec = bcd2bin((time & AT91_RTC_SEC) >> 0); - tm->tm_min = bcd2bin((time & AT91_RTC_MIN) >> 8); - tm->tm_hour = bcd2bin((time & AT91_RTC_HOUR) >> 16); + tm->tm_sec = bcd2bin(FIELD_GET(AT91_RTC_SEC, time)); + tm->tm_min = bcd2bin(FIELD_GET(AT91_RTC_MIN, time)); + tm->tm_hour = bcd2bin(FIELD_GET(AT91_RTC_HOUR, time)); /* * The Calendar Alarm register does not have a field for * the year - so these will return an invalid value. */ tm->tm_year = bcd2bin(date & AT91_RTC_CENT) * 100; /* century */ - tm->tm_year += bcd2bin((date & AT91_RTC_YEAR) >> 8); /* year */ + tm->tm_year += bcd2bin(FIELD_GET(AT91_RTC_YEAR, date)); /* year */ - tm->tm_wday = bcd2bin((date & AT91_RTC_DAY) >> 21) - 1; /* day of the week [0-6], Sunday=0 */ - tm->tm_mon = bcd2bin((date & AT91_RTC_MONTH) >> 16) - 1; - tm->tm_mday = bcd2bin((date & AT91_RTC_DATE) >> 24); + tm->tm_wday = bcd2bin(FIELD_GET(AT91_RTC_DAY, date)) - 1; /* day of the week [0-6], Sunday=0 */ + tm->tm_mon = bcd2bin(FIELD_GET(AT91_RTC_MONTH, date)) - 1; + tm->tm_mday = bcd2bin(FIELD_GET(AT91_RTC_DATE, date)); } /* @@ -167,16 +212,17 @@ static int at91_rtc_settime(struct device *dev, struct rtc_time *tm) at91_rtc_write_idr(AT91_RTC_ACKUPD); at91_rtc_write(AT91_RTC_TIMR, - bin2bcd(tm->tm_sec) << 0 - | bin2bcd(tm->tm_min) << 8 - | bin2bcd(tm->tm_hour) << 16); + FIELD_PREP(AT91_RTC_SEC, bin2bcd(tm->tm_sec)) + | FIELD_PREP(AT91_RTC_MIN, bin2bcd(tm->tm_min)) + | FIELD_PREP(AT91_RTC_HOUR, bin2bcd(tm->tm_hour))); at91_rtc_write(AT91_RTC_CALR, - bin2bcd((tm->tm_year + 1900) / 100) /* century */ - | bin2bcd(tm->tm_year % 100) << 8 /* year */ - | bin2bcd(tm->tm_mon + 1) << 16 /* tm_mon starts at zero */ - | bin2bcd(tm->tm_wday + 1) << 21 /* day of the week [0-6], Sunday=0 */ - | bin2bcd(tm->tm_mday) << 24); + FIELD_PREP(AT91_RTC_CENT, + bin2bcd((tm->tm_year + 1900) / 100)) + | FIELD_PREP(AT91_RTC_YEAR, bin2bcd(tm->tm_year % 100)) + | FIELD_PREP(AT91_RTC_MONTH, bin2bcd(tm->tm_mon + 1)) + | FIELD_PREP(AT91_RTC_DAY, bin2bcd(tm->tm_wday + 1)) + | FIELD_PREP(AT91_RTC_DATE, bin2bcd(tm->tm_mday))); /* Restart Time/Calendar */ cr = at91_rtc_read(AT91_RTC_CR); @@ -211,25 +257,17 @@ static int at91_rtc_readalarm(struct device *dev, struct rtc_wkalrm *alrm) */ static int at91_rtc_setalarm(struct device *dev, struct rtc_wkalrm *alrm) { - struct rtc_time tm; - - at91_rtc_decodetime(AT91_RTC_TIMR, AT91_RTC_CALR, &tm); - - tm.tm_mon = alrm->time.tm_mon; - tm.tm_mday = alrm->time.tm_mday; - tm.tm_hour = alrm->time.tm_hour; - tm.tm_min = alrm->time.tm_min; - tm.tm_sec = alrm->time.tm_sec; + struct rtc_time tm = alrm->time; at91_rtc_write_idr(AT91_RTC_ALARM); at91_rtc_write(AT91_RTC_TIMALR, - bin2bcd(tm.tm_sec) << 0 - | bin2bcd(tm.tm_min) << 8 - | bin2bcd(tm.tm_hour) << 16 + FIELD_PREP(AT91_RTC_SEC, bin2bcd(alrm->time.tm_sec)) + | FIELD_PREP(AT91_RTC_MIN, bin2bcd(alrm->time.tm_min)) + | FIELD_PREP(AT91_RTC_HOUR, bin2bcd(alrm->time.tm_hour)) | AT91_RTC_HOUREN | AT91_RTC_MINEN | AT91_RTC_SECEN); at91_rtc_write(AT91_RTC_CALALR, - bin2bcd(tm.tm_mon + 1) << 16 /* tm_mon starts at zero */ - | bin2bcd(tm.tm_mday) << 24 + FIELD_PREP(AT91_RTC_MONTH, bin2bcd(alrm->time.tm_mon + 1)) + | FIELD_PREP(AT91_RTC_DATE, bin2bcd(alrm->time.tm_mday)) | AT91_RTC_DATEEN | AT91_RTC_MTHEN); if (alrm->enabled) { @@ -254,20 +292,6 @@ static int at91_rtc_alarm_irq_enable(struct device *dev, unsigned int enabled) return 0; } -/* - * Provide additional RTC information in /proc/driver/rtc - */ -static int at91_rtc_proc(struct device *dev, struct seq_file *seq) -{ - unsigned long imr = at91_rtc_read_imr(); - - seq_printf(seq, "update_IRQ\t: %s\n", - (imr & AT91_RTC_ACKUPD) ? "yes" : "no"); - seq_printf(seq, "periodic_IRQ\t: %s\n", - (imr & AT91_RTC_SECEV) ? "yes" : "no"); - - return 0; -} /* * IRQ handler for the RTC @@ -319,7 +343,6 @@ static const struct at91_rtc_config at91sam9x5_config = { .use_shadow_imr = true, }; -#ifdef CONFIG_OF static const struct of_device_id at91_rtc_dt_ids[] = { { .compatible = "atmel,at91rm9200-rtc", @@ -328,33 +351,22 @@ static const struct of_device_id at91_rtc_dt_ids[] = { .compatible = "atmel,at91sam9x5-rtc", .data = &at91sam9x5_config, }, { + .compatible = "atmel,sama5d4-rtc", + .data = &at91rm9200_config, + }, { + .compatible = "atmel,sama5d2-rtc", + .data = &at91rm9200_config, + }, { /* sentinel */ } }; MODULE_DEVICE_TABLE(of, at91_rtc_dt_ids); -#endif - -static const struct at91_rtc_config * -at91_rtc_get_config(struct platform_device *pdev) -{ - const struct of_device_id *match; - - if (pdev->dev.of_node) { - match = of_match_node(at91_rtc_dt_ids, pdev->dev.of_node); - if (!match) - return NULL; - return (const struct at91_rtc_config *)match->data; - } - - return &at91rm9200_config; -} static const struct rtc_class_ops at91_rtc_ops = { .read_time = at91_rtc_readtime, .set_time = at91_rtc_settime, .read_alarm = at91_rtc_readalarm, .set_alarm = at91_rtc_setalarm, - .proc = at91_rtc_proc, .alarm_irq_enable = at91_rtc_alarm_irq_enable, }; @@ -367,7 +379,7 @@ static int __init at91_rtc_probe(struct platform_device *pdev) struct resource *regs; int ret = 0; - at91_rtc_config = at91_rtc_get_config(pdev); + at91_rtc_config = of_device_get_match_data(&pdev->dev); if (!at91_rtc_config) return -ENODEV; @@ -378,10 +390,8 @@ static int __init at91_rtc_probe(struct platform_device *pdev) } irq = platform_get_irq(pdev, 0); - if (irq < 0) { - dev_err(&pdev->dev, "no irq resource defined\n"); + if (irq < 0) return -ENXIO; - } at91_rtc_regs = devm_ioremap(&pdev->dev, regs->start, resource_size(regs)); diff --git a/drivers/rtc/rtc-at91rm9200.h b/drivers/rtc/rtc-at91rm9200.h deleted file mode 100644 index 8be5289da8e2..000000000000 --- a/drivers/rtc/rtc-at91rm9200.h +++ /dev/null @@ -1,71 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0-or-later */ -/* - * arch/arm/mach-at91/include/mach/at91_rtc.h - * - * Copyright (C) 2005 Ivan Kokshaysky - * Copyright (C) SAN People - * - * Real Time Clock (RTC) - System peripheral registers. - * Based on AT91RM9200 datasheet revision E. - */ - -#ifndef AT91_RTC_H -#define AT91_RTC_H - -#define AT91_RTC_CR 0x00 /* Control Register */ -#define AT91_RTC_UPDTIM (1 << 0) /* Update Request Time Register */ -#define AT91_RTC_UPDCAL (1 << 1) /* Update Request Calendar Register */ -#define AT91_RTC_TIMEVSEL (3 << 8) /* Time Event Selection */ -#define AT91_RTC_TIMEVSEL_MINUTE (0 << 8) -#define AT91_RTC_TIMEVSEL_HOUR (1 << 8) -#define AT91_RTC_TIMEVSEL_DAY24 (2 << 8) -#define AT91_RTC_TIMEVSEL_DAY12 (3 << 8) -#define AT91_RTC_CALEVSEL (3 << 16) /* Calendar Event Selection */ -#define AT91_RTC_CALEVSEL_WEEK (0 << 16) -#define AT91_RTC_CALEVSEL_MONTH (1 << 16) -#define AT91_RTC_CALEVSEL_YEAR (2 << 16) - -#define AT91_RTC_MR 0x04 /* Mode Register */ -#define AT91_RTC_HRMOD (1 << 0) /* 12/24 Hour Mode */ - -#define AT91_RTC_TIMR 0x08 /* Time Register */ -#define AT91_RTC_SEC (0x7f << 0) /* Current Second */ -#define AT91_RTC_MIN (0x7f << 8) /* Current Minute */ -#define AT91_RTC_HOUR (0x3f << 16) /* Current Hour */ -#define AT91_RTC_AMPM (1 << 22) /* Ante Meridiem Post Meridiem Indicator */ - -#define AT91_RTC_CALR 0x0c /* Calendar Register */ -#define AT91_RTC_CENT (0x7f << 0) /* Current Century */ -#define AT91_RTC_YEAR (0xff << 8) /* Current Year */ -#define AT91_RTC_MONTH (0x1f << 16) /* Current Month */ -#define AT91_RTC_DAY (7 << 21) /* Current Day */ -#define AT91_RTC_DATE (0x3f << 24) /* Current Date */ - -#define AT91_RTC_TIMALR 0x10 /* Time Alarm Register */ -#define AT91_RTC_SECEN (1 << 7) /* Second Alarm Enable */ -#define AT91_RTC_MINEN (1 << 15) /* Minute Alarm Enable */ -#define AT91_RTC_HOUREN (1 << 23) /* Hour Alarm Enable */ - -#define AT91_RTC_CALALR 0x14 /* Calendar Alarm Register */ -#define AT91_RTC_MTHEN (1 << 23) /* Month Alarm Enable */ -#define AT91_RTC_DATEEN (1 << 31) /* Date Alarm Enable */ - -#define AT91_RTC_SR 0x18 /* Status Register */ -#define AT91_RTC_ACKUPD (1 << 0) /* Acknowledge for Update */ -#define AT91_RTC_ALARM (1 << 1) /* Alarm Flag */ -#define AT91_RTC_SECEV (1 << 2) /* Second Event */ -#define AT91_RTC_TIMEV (1 << 3) /* Time Event */ -#define AT91_RTC_CALEV (1 << 4) /* Calendar Event */ - -#define AT91_RTC_SCCR 0x1c /* Status Clear Command Register */ -#define AT91_RTC_IER 0x20 /* Interrupt Enable Register */ -#define AT91_RTC_IDR 0x24 /* Interrupt Disable Register */ -#define AT91_RTC_IMR 0x28 /* Interrupt Mask Register */ - -#define AT91_RTC_VER 0x2c /* Valid Entry Register */ -#define AT91_RTC_NVTIM (1 << 0) /* Non valid Time */ -#define AT91_RTC_NVCAL (1 << 1) /* Non valid Calendar */ -#define AT91_RTC_NVTIMALR (1 << 2) /* Non valid Time Alarm */ -#define AT91_RTC_NVCALALR (1 << 3) /* Non valid Calendar Alarm */ - -#endif diff --git a/drivers/rtc/rtc-at91sam9.c b/drivers/rtc/rtc-at91sam9.c index 4daf3789b978..e39e89867d29 100644 --- a/drivers/rtc/rtc-at91sam9.c +++ b/drivers/rtc/rtc-at91sam9.c @@ -334,7 +334,6 @@ static const struct rtc_class_ops at91_rtc_ops = { */ static int at91_rtc_probe(struct platform_device *pdev) { - struct resource *r; struct sam9_rtc *rtc; int ret, irq; u32 mr; @@ -342,10 +341,8 @@ static int at91_rtc_probe(struct platform_device *pdev) struct of_phandle_args args; irq = platform_get_irq(pdev, 0); - if (irq < 0) { - dev_err(&pdev->dev, "failed to get interrupt resource\n"); + if (irq < 0) return irq; - } rtc = devm_kzalloc(&pdev->dev, sizeof(*rtc), GFP_KERNEL); if (!rtc) @@ -360,8 +357,7 @@ static int at91_rtc_probe(struct platform_device *pdev) platform_set_drvdata(pdev, rtc); - r = platform_get_resource(pdev, IORESOURCE_MEM, 0); - rtc->rtt = devm_ioremap_resource(&pdev->dev, r); + rtc->rtt = devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(rtc->rtt)) return PTR_ERR(rtc->rtt); diff --git a/drivers/rtc/rtc-bd70528.c b/drivers/rtc/rtc-bd70528.c index f9bdd555e1a2..bbbb1f07c91f 100644 --- a/drivers/rtc/rtc-bd70528.c +++ b/drivers/rtc/rtc-bd70528.c @@ -6,6 +6,7 @@ #include <linux/bcd.h> #include <linux/mfd/rohm-bd70528.h> +#include <linux/mfd/rohm-bd71828.h> #include <linux/module.h> #include <linux/of.h> #include <linux/platform_device.h> @@ -15,7 +16,7 @@ /* * We read regs RTC_SEC => RTC_YEAR * this struct is ordered according to chip registers. - * Keep it u8 only to avoid padding issues. + * Keep it u8 only (or packed) to avoid padding issues. */ struct bd70528_rtc_day { u8 sec; @@ -36,6 +37,13 @@ struct bd70528_rtc_wake { u8 ctrl; } __packed; +struct bd71828_rtc_alm { + struct bd70528_rtc_data alm0; + struct bd70528_rtc_data alm1; + u8 alm_mask; + u8 alm1_mask; +} __packed; + struct bd70528_rtc_alm { struct bd70528_rtc_data data; u8 alm_mask; @@ -43,8 +51,10 @@ struct bd70528_rtc_alm { } __packed; struct bd70528_rtc { - struct rohm_regmap_dev *mfd; + struct rohm_regmap_dev *parent; struct device *dev; + u8 reg_time_start; + bool has_rtc_timers; }; static int bd70528_set_wake(struct rohm_regmap_dev *bd70528, @@ -123,14 +133,14 @@ static int bd70528_set_rtc_based_timers(struct bd70528_rtc *r, int new_state, { int ret; - ret = bd70528_wdt_set(r->mfd, new_state & BD70528_WDT_STATE_BIT, + ret = bd70528_wdt_set(r->parent, new_state & BD70528_WDT_STATE_BIT, old_state); if (ret) { dev_err(r->dev, "Failed to disable WDG for RTC setting (%d)\n", ret); return ret; } - ret = bd70528_set_elapsed_tmr(r->mfd, + ret = bd70528_set_elapsed_tmr(r->parent, new_state & BD70528_ELAPSED_STATE_BIT, old_state); if (ret) { @@ -138,7 +148,7 @@ static int bd70528_set_rtc_based_timers(struct bd70528_rtc *r, int new_state, "Failed to disable 'elapsed timer' for RTC setting\n"); return ret; } - ret = bd70528_set_wake(r->mfd, new_state & BD70528_WAKE_STATE_BIT, + ret = bd70528_set_wake(r->parent, new_state & BD70528_WAKE_STATE_BIT, old_state); if (ret) { dev_err(r->dev, @@ -152,12 +162,18 @@ static int bd70528_set_rtc_based_timers(struct bd70528_rtc *r, int new_state, static int bd70528_re_enable_rtc_based_timers(struct bd70528_rtc *r, int old_state) { + if (!r->has_rtc_timers) + return 0; + return bd70528_set_rtc_based_timers(r, old_state, NULL); } static int bd70528_disable_rtc_based_timers(struct bd70528_rtc *r, int *old_state) { + if (!r->has_rtc_timers) + return 0; + return bd70528_set_rtc_based_timers(r, 0, old_state); } @@ -213,22 +229,52 @@ static inline void rtc2tm(struct bd70528_rtc_data *r, struct rtc_time *t) t->tm_wday = bcd2bin(r->week & BD70528_MASK_RTC_WEEK); } +static int bd71828_set_alarm(struct device *dev, struct rtc_wkalrm *a) +{ + int ret; + struct bd71828_rtc_alm alm; + struct bd70528_rtc *r = dev_get_drvdata(dev); + struct rohm_regmap_dev *parent = r->parent; + + ret = regmap_bulk_read(parent->regmap, BD71828_REG_RTC_ALM_START, + &alm, sizeof(alm)); + if (ret) { + dev_err(dev, "Failed to read alarm regs\n"); + return ret; + } + + tm2rtc(&a->time, &alm.alm0); + + if (!a->enabled) + alm.alm_mask &= ~BD70528_MASK_ALM_EN; + else + alm.alm_mask |= BD70528_MASK_ALM_EN; + + ret = regmap_bulk_write(parent->regmap, BD71828_REG_RTC_ALM_START, + &alm, sizeof(alm)); + if (ret) + dev_err(dev, "Failed to set alarm time\n"); + + return ret; + +} + static int bd70528_set_alarm(struct device *dev, struct rtc_wkalrm *a) { struct bd70528_rtc_wake wake; struct bd70528_rtc_alm alm; int ret; struct bd70528_rtc *r = dev_get_drvdata(dev); - struct rohm_regmap_dev *bd70528 = r->mfd; + struct rohm_regmap_dev *parent = r->parent; - ret = regmap_bulk_read(bd70528->regmap, BD70528_REG_RTC_WAKE_START, + ret = regmap_bulk_read(parent->regmap, BD70528_REG_RTC_WAKE_START, &wake, sizeof(wake)); if (ret) { dev_err(dev, "Failed to read wake regs\n"); return ret; } - ret = regmap_bulk_read(bd70528->regmap, BD70528_REG_RTC_ALM_START, + ret = regmap_bulk_read(parent->regmap, BD70528_REG_RTC_ALM_START, &alm, sizeof(alm)); if (ret) { dev_err(dev, "Failed to read alarm regs\n"); @@ -246,14 +292,14 @@ static int bd70528_set_alarm(struct device *dev, struct rtc_wkalrm *a) wake.ctrl &= ~BD70528_MASK_WAKE_EN; } - ret = regmap_bulk_write(bd70528->regmap, + ret = regmap_bulk_write(parent->regmap, BD70528_REG_RTC_WAKE_START, &wake, sizeof(wake)); if (ret) { dev_err(dev, "Failed to set wake time\n"); return ret; } - ret = regmap_bulk_write(bd70528->regmap, BD70528_REG_RTC_ALM_START, + ret = regmap_bulk_write(parent->regmap, BD70528_REG_RTC_ALM_START, &alm, sizeof(alm)); if (ret) dev_err(dev, "Failed to set alarm time\n"); @@ -261,14 +307,38 @@ static int bd70528_set_alarm(struct device *dev, struct rtc_wkalrm *a) return ret; } +static int bd71828_read_alarm(struct device *dev, struct rtc_wkalrm *a) +{ + int ret; + struct bd71828_rtc_alm alm; + struct bd70528_rtc *r = dev_get_drvdata(dev); + struct rohm_regmap_dev *parent = r->parent; + + ret = regmap_bulk_read(parent->regmap, BD71828_REG_RTC_ALM_START, + &alm, sizeof(alm)); + if (ret) { + dev_err(dev, "Failed to read alarm regs\n"); + return ret; + } + + rtc2tm(&alm.alm0, &a->time); + a->time.tm_mday = -1; + a->time.tm_mon = -1; + a->time.tm_year = -1; + a->enabled = !!(alm.alm_mask & BD70528_MASK_ALM_EN); + a->pending = 0; + + return 0; +} + static int bd70528_read_alarm(struct device *dev, struct rtc_wkalrm *a) { struct bd70528_rtc_alm alm; int ret; struct bd70528_rtc *r = dev_get_drvdata(dev); - struct rohm_regmap_dev *bd70528 = r->mfd; + struct rohm_regmap_dev *parent = r->parent; - ret = regmap_bulk_read(bd70528->regmap, BD70528_REG_RTC_ALM_START, + ret = regmap_bulk_read(parent->regmap, BD70528_REG_RTC_ALM_START, &alm, sizeof(alm)); if (ret) { dev_err(dev, "Failed to read alarm regs\n"); @@ -290,14 +360,14 @@ static int bd70528_set_time_locked(struct device *dev, struct rtc_time *t) int ret, tmpret, old_states; struct bd70528_rtc_data rtc_data; struct bd70528_rtc *r = dev_get_drvdata(dev); - struct rohm_regmap_dev *bd70528 = r->mfd; + struct rohm_regmap_dev *parent = r->parent; ret = bd70528_disable_rtc_based_timers(r, &old_states); if (ret) return ret; - tmpret = regmap_bulk_read(bd70528->regmap, - BD70528_REG_RTC_START, &rtc_data, + tmpret = regmap_bulk_read(parent->regmap, + r->reg_time_start, &rtc_data, sizeof(rtc_data)); if (tmpret) { dev_err(dev, "Failed to read RTC time registers\n"); @@ -305,8 +375,8 @@ static int bd70528_set_time_locked(struct device *dev, struct rtc_time *t) } tm2rtc(t, &rtc_data); - tmpret = regmap_bulk_write(bd70528->regmap, - BD70528_REG_RTC_START, &rtc_data, + tmpret = regmap_bulk_write(parent->regmap, + r->reg_time_start, &rtc_data, sizeof(rtc_data)); if (tmpret) { dev_err(dev, "Failed to set RTC time\n"); @@ -321,27 +391,32 @@ renable_out: return ret; } +static int bd71828_set_time(struct device *dev, struct rtc_time *t) +{ + return bd70528_set_time_locked(dev, t); +} + static int bd70528_set_time(struct device *dev, struct rtc_time *t) { int ret; struct bd70528_rtc *r = dev_get_drvdata(dev); - bd70528_wdt_lock(r->mfd); + bd70528_wdt_lock(r->parent); ret = bd70528_set_time_locked(dev, t); - bd70528_wdt_unlock(r->mfd); + bd70528_wdt_unlock(r->parent); return ret; } static int bd70528_get_time(struct device *dev, struct rtc_time *t) { struct bd70528_rtc *r = dev_get_drvdata(dev); - struct rohm_regmap_dev *bd70528 = r->mfd; + struct rohm_regmap_dev *parent = r->parent; struct bd70528_rtc_data rtc_data; int ret; /* read the RTC date and time registers all at once */ - ret = regmap_bulk_read(bd70528->regmap, - BD70528_REG_RTC_START, &rtc_data, + ret = regmap_bulk_read(parent->regmap, + r->reg_time_start, &rtc_data, sizeof(rtc_data)); if (ret) { dev_err(dev, "Failed to read RTC time (err %d)\n", ret); @@ -362,19 +437,36 @@ static int bd70528_alm_enable(struct device *dev, unsigned int enabled) if (enabled) enableval = 0; - bd70528_wdt_lock(r->mfd); - ret = bd70528_set_wake(r->mfd, enabled, NULL); + bd70528_wdt_lock(r->parent); + ret = bd70528_set_wake(r->parent, enabled, NULL); if (ret) { dev_err(dev, "Failed to change wake state\n"); goto out_unlock; } - ret = regmap_update_bits(r->mfd->regmap, BD70528_REG_RTC_ALM_MASK, + ret = regmap_update_bits(r->parent->regmap, BD70528_REG_RTC_ALM_MASK, BD70528_MASK_ALM_EN, enableval); if (ret) dev_err(dev, "Failed to change alarm state\n"); out_unlock: - bd70528_wdt_unlock(r->mfd); + bd70528_wdt_unlock(r->parent); + return ret; +} + +static int bd71828_alm_enable(struct device *dev, unsigned int enabled) +{ + int ret; + struct bd70528_rtc *r = dev_get_drvdata(dev); + unsigned int enableval = BD70528_MASK_ALM_EN; + + if (!enabled) + enableval = 0; + + ret = regmap_update_bits(r->parent->regmap, BD71828_REG_RTC_ALM0_MASK, + BD70528_MASK_ALM_EN, enableval); + if (ret) + dev_err(dev, "Failed to change alarm state\n"); + return ret; } @@ -386,6 +478,14 @@ static const struct rtc_class_ops bd70528_rtc_ops = { .alarm_irq_enable = bd70528_alm_enable, }; +static const struct rtc_class_ops bd71828_rtc_ops = { + .read_time = bd70528_get_time, + .set_time = bd71828_set_time, + .read_alarm = bd71828_read_alarm, + .set_alarm = bd71828_set_alarm, + .alarm_irq_enable = bd71828_alm_enable, +}; + static irqreturn_t alm_hndlr(int irq, void *data) { struct rtc_device *rtc = data; @@ -397,14 +497,19 @@ static irqreturn_t alm_hndlr(int irq, void *data) static int bd70528_probe(struct platform_device *pdev) { struct bd70528_rtc *bd_rtc; - struct rohm_regmap_dev *mfd; + const struct rtc_class_ops *rtc_ops; + struct rohm_regmap_dev *parent; + const char *irq_name; int ret; struct rtc_device *rtc; int irq; unsigned int hr; + bool enable_main_irq = false; + u8 hour_reg; + enum rohm_chip_type chip = platform_get_device_id(pdev)->driver_data; - mfd = dev_get_drvdata(pdev->dev.parent); - if (!mfd) { + parent = dev_get_drvdata(pdev->dev.parent); + if (!parent) { dev_err(&pdev->dev, "No MFD driver data\n"); return -EINVAL; } @@ -412,10 +517,30 @@ static int bd70528_probe(struct platform_device *pdev) if (!bd_rtc) return -ENOMEM; - bd_rtc->mfd = mfd; + bd_rtc->parent = parent; bd_rtc->dev = &pdev->dev; - irq = platform_get_irq_byname(pdev, "bd70528-rtc-alm"); + switch (chip) { + case ROHM_CHIP_TYPE_BD70528: + irq_name = "bd70528-rtc-alm"; + bd_rtc->has_rtc_timers = true; + bd_rtc->reg_time_start = BD70528_REG_RTC_START; + hour_reg = BD70528_REG_RTC_HOUR; + enable_main_irq = true; + rtc_ops = &bd70528_rtc_ops; + break; + case ROHM_CHIP_TYPE_BD71828: + irq_name = "bd71828-rtc-alm-0"; + bd_rtc->reg_time_start = BD71828_REG_RTC_START; + hour_reg = BD71828_REG_RTC_HOUR; + rtc_ops = &bd71828_rtc_ops; + break; + default: + dev_err(&pdev->dev, "Unknown chip\n"); + return -ENOENT; + } + + irq = platform_get_irq_byname(pdev, irq_name); if (irq < 0) { dev_err(&pdev->dev, "Failed to get irq\n"); @@ -424,7 +549,7 @@ static int bd70528_probe(struct platform_device *pdev) platform_set_drvdata(pdev, bd_rtc); - ret = regmap_read(mfd->regmap, BD70528_REG_RTC_HOUR, &hr); + ret = regmap_read(parent->regmap, hour_reg, &hr); if (ret) { dev_err(&pdev->dev, "Failed to reag RTC clock\n"); @@ -434,10 +559,10 @@ static int bd70528_probe(struct platform_device *pdev) if (!(hr & BD70528_MASK_RTC_HOUR_24H)) { struct rtc_time t; - ret = bd70528_get_time(&pdev->dev, &t); + ret = rtc_ops->read_time(&pdev->dev, &t); if (!ret) - ret = bd70528_set_time(&pdev->dev, &t); + ret = rtc_ops->set_time(&pdev->dev, &t); if (ret) { dev_err(&pdev->dev, @@ -457,7 +582,7 @@ static int bd70528_probe(struct platform_device *pdev) rtc->range_min = RTC_TIMESTAMP_BEGIN_2000; rtc->range_max = RTC_TIMESTAMP_END_2099; - rtc->ops = &bd70528_rtc_ops; + rtc->ops = rtc_ops; /* Request alarm IRQ prior to registerig the RTC */ ret = devm_request_threaded_irq(&pdev->dev, irq, NULL, &alm_hndlr, @@ -471,30 +596,37 @@ static int bd70528_probe(struct platform_device *pdev) * leave them enabled as irq-controller should disable irqs * from sub-registers when IRQ is disabled or freed. */ - ret = regmap_update_bits(mfd->regmap, + if (enable_main_irq) { + ret = regmap_update_bits(parent->regmap, BD70528_REG_INT_MAIN_MASK, BD70528_INT_RTC_MASK, 0); - if (ret) { - dev_err(&pdev->dev, "Failed to enable RTC interrupts\n"); - return ret; + if (ret) { + dev_err(&pdev->dev, "Failed to enable RTC interrupts\n"); + return ret; + } } - ret = rtc_register_device(rtc); - if (ret) - dev_err(&pdev->dev, "Registering RTC failed\n"); - - return ret; + return rtc_register_device(rtc); } +static const struct platform_device_id bd718x7_rtc_id[] = { + { "bd70528-rtc", ROHM_CHIP_TYPE_BD70528 }, + { "bd71828-rtc", ROHM_CHIP_TYPE_BD71828 }, + { }, +}; +MODULE_DEVICE_TABLE(platform, bd718x7_rtc_id); + static struct platform_driver bd70528_rtc = { .driver = { .name = "bd70528-rtc" }, .probe = bd70528_probe, + .id_table = bd718x7_rtc_id, }; module_platform_driver(bd70528_rtc); MODULE_AUTHOR("Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>"); -MODULE_DESCRIPTION("BD70528 RTC driver"); +MODULE_DESCRIPTION("ROHM BD70528 and BD71828 PMIC RTC driver"); MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform:bd70528-rtc"); diff --git a/drivers/rtc/rtc-brcmstb-waketimer.c b/drivers/rtc/rtc-brcmstb-waketimer.c index 2f65943867f5..4fee57c51280 100644 --- a/drivers/rtc/rtc-brcmstb-waketimer.c +++ b/drivers/rtc/rtc-brcmstb-waketimer.c @@ -200,7 +200,6 @@ static int brcmstb_waketmr_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; struct brcmstb_waketmr *timer; - struct resource *res; int ret; timer = devm_kzalloc(dev, sizeof(*timer), GFP_KERNEL); @@ -210,8 +209,7 @@ static int brcmstb_waketmr_probe(struct platform_device *pdev) platform_set_drvdata(pdev, timer); timer->dev = dev; - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - timer->base = devm_ioremap_resource(dev, res); + timer->base = devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(timer->base)) return PTR_ERR(timer->base); @@ -255,10 +253,8 @@ static int brcmstb_waketmr_probe(struct platform_device *pdev) timer->rtc->range_max = U32_MAX; ret = rtc_register_device(timer->rtc); - if (ret) { - dev_err(dev, "unable to register device\n"); + if (ret) goto err_notifier; - } dev_info(dev, "registered, with irq %d\n", timer->irq); @@ -279,6 +275,7 @@ static int brcmstb_waketmr_remove(struct platform_device *pdev) struct brcmstb_waketmr *timer = dev_get_drvdata(&pdev->dev); unregister_reboot_notifier(&timer->reboot_notifier); + clk_disable_unprepare(timer->clk); return 0; } diff --git a/drivers/rtc/rtc-cadence.c b/drivers/rtc/rtc-cadence.c index 3b7d643c8a63..595d5d252850 100644 --- a/drivers/rtc/rtc-cadence.c +++ b/drivers/rtc/rtc-cadence.c @@ -255,7 +255,6 @@ static const struct rtc_class_ops cdns_rtc_ops = { static int cdns_rtc_probe(struct platform_device *pdev) { struct cdns_rtc *crtc; - struct resource *res; int ret; unsigned long ref_clk_freq; @@ -263,8 +262,7 @@ static int cdns_rtc_probe(struct platform_device *pdev) if (!crtc) return -ENOMEM; - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - crtc->regs = devm_ioremap_resource(&pdev->dev, res); + crtc->regs = devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(crtc->regs)) return PTR_ERR(crtc->regs); @@ -289,12 +287,8 @@ static int cdns_rtc_probe(struct platform_device *pdev) } crtc->rtc_dev = devm_rtc_allocate_device(&pdev->dev); - if (IS_ERR(crtc->rtc_dev)) { - ret = PTR_ERR(crtc->rtc_dev); - dev_err(&pdev->dev, - "Failed to allocate the RTC device, %d\n", ret); - return ret; - } + if (IS_ERR(crtc->rtc_dev)) + return PTR_ERR(crtc->rtc_dev); platform_set_drvdata(pdev, crtc); @@ -343,11 +337,8 @@ static int cdns_rtc_probe(struct platform_device *pdev) writel(CDNS_RTC_KRTCR_KRTC, crtc->regs + CDNS_RTC_KRTCR); ret = rtc_register_device(crtc->rtc_dev); - if (ret) { - dev_err(&pdev->dev, - "Failed to register the RTC device, %d\n", ret); + if (ret) goto err_disable_wakeup; - } return 0; diff --git a/drivers/rtc/rtc-cmos.c b/drivers/rtc/rtc-cmos.c index 033303708c8b..b795fe4cbd2e 100644 --- a/drivers/rtc/rtc-cmos.c +++ b/drivers/rtc/rtc-cmos.c @@ -850,7 +850,7 @@ cmos_do_probe(struct device *dev, struct resource *ports, int rtc_irq) rtc_cmos_int_handler = cmos_interrupt; retval = request_irq(rtc_irq, rtc_cmos_int_handler, - IRQF_SHARED, dev_name(&cmos_rtc.rtc->dev), + 0, dev_name(&cmos_rtc.rtc->dev), cmos_rtc.rtc); if (retval < 0) { dev_dbg(dev, "IRQ %d is already in use\n", rtc_irq); @@ -1197,8 +1197,6 @@ static void rtc_wake_off(struct device *dev) /* Enable use_acpi_alarm mode for Intel platforms no earlier than 2015 */ static void use_acpi_alarm_quirks(void) { - int year; - if (boot_cpu_data.x86_vendor != X86_VENDOR_INTEL) return; @@ -1208,8 +1206,10 @@ static void use_acpi_alarm_quirks(void) if (!is_hpet_enabled()) return; - if (dmi_get_date(DMI_BIOS_DATE, &year, NULL, NULL) && year >= 2015) - use_acpi_alarm = true; + if (dmi_get_bios_year() < 2015) + return; + + use_acpi_alarm = true; } #else static inline void use_acpi_alarm_quirks(void) { } @@ -1305,7 +1305,7 @@ static int cmos_pnp_probe(struct pnp_dev *pnp, const struct pnp_device_id *id) * hardcode it on systems with a legacy PIC. */ if (nr_legacy_irqs()) - irq = 8; + irq = RTC_IRQ; #endif return cmos_do_probe(&pnp->dev, pnp_get_resource(pnp, IORESOURCE_IO, 0), irq); diff --git a/drivers/rtc/rtc-coh901331.c b/drivers/rtc/rtc-coh901331.c index 4ac850837153..da59917c9ee8 100644 --- a/drivers/rtc/rtc-coh901331.c +++ b/drivers/rtc/rtc-coh901331.c @@ -164,15 +164,13 @@ static int __init coh901331_probe(struct platform_device *pdev) { int ret; struct coh901331_port *rtap; - struct resource *res; rtap = devm_kzalloc(&pdev->dev, sizeof(struct coh901331_port), GFP_KERNEL); if (!rtap) return -ENOMEM; - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - rtap->virtbase = devm_ioremap_resource(&pdev->dev, res); + rtap->virtbase = devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(rtap->virtbase)) return PTR_ERR(rtap->virtbase); diff --git a/drivers/rtc/rtc-cros-ec.c b/drivers/rtc/rtc-cros-ec.c index 4d6bf9304ceb..f7343c289cab 100644 --- a/drivers/rtc/rtc-cros-ec.c +++ b/drivers/rtc/rtc-cros-ec.c @@ -5,9 +5,9 @@ // Author: Stephen Barber <smbarber@chromium.org> #include <linux/kernel.h> -#include <linux/mfd/cros_ec.h> -#include <linux/mfd/cros_ec_commands.h> #include <linux/module.h> +#include <linux/platform_data/cros_ec_commands.h> +#include <linux/platform_data/cros_ec_proto.h> #include <linux/platform_device.h> #include <linux/rtc.h> #include <linux/slab.h> @@ -106,11 +106,7 @@ static int cros_ec_rtc_set_time(struct device *dev, struct rtc_time *tm) struct cros_ec_rtc *cros_ec_rtc = dev_get_drvdata(dev); struct cros_ec_device *cros_ec = cros_ec_rtc->cros_ec; int ret; - time64_t time; - - time = rtc_tm_to_time64(tm); - if (time < 0 || time > U32_MAX) - return -EINVAL; + time64_t time = rtc_tm_to_time64(tm); ret = cros_ec_rtc_set(cros_ec, EC_CMD_RTC_SET_VALUE, (u32)time); if (ret < 0) { @@ -347,14 +343,16 @@ static int cros_ec_rtc_probe(struct platform_device *pdev) return ret; } - cros_ec_rtc->rtc = devm_rtc_device_register(&pdev->dev, DRV_NAME, - &cros_ec_rtc_ops, - THIS_MODULE); - if (IS_ERR(cros_ec_rtc->rtc)) { - ret = PTR_ERR(cros_ec_rtc->rtc); - dev_err(&pdev->dev, "failed to register rtc device\n"); + cros_ec_rtc->rtc = devm_rtc_allocate_device(&pdev->dev); + if (IS_ERR(cros_ec_rtc->rtc)) + return PTR_ERR(cros_ec_rtc->rtc); + + cros_ec_rtc->rtc->ops = &cros_ec_rtc_ops; + cros_ec_rtc->rtc->range_max = U32_MAX; + + ret = rtc_register_device(cros_ec_rtc->rtc); + if (ret) return ret; - } /* Get RTC events from the EC. */ cros_ec_rtc->notifier.notifier_call = cros_ec_rtc_event; diff --git a/drivers/rtc/rtc-da9063.c b/drivers/rtc/rtc-da9063.c index 15908d51b1cb..046b1d4c3dae 100644 --- a/drivers/rtc/rtc-da9063.c +++ b/drivers/rtc/rtc-da9063.c @@ -483,6 +483,9 @@ static int da9063_rtc_probe(struct platform_device *pdev) rtc->rtc_dev->uie_unsupported = 1; irq_alarm = platform_get_irq_byname(pdev, "ALARM"); + if (irq_alarm < 0) + return irq_alarm; + ret = devm_request_threaded_irq(&pdev->dev, irq_alarm, NULL, da9063_alarm_event, IRQF_TRIGGER_LOW | IRQF_ONESHOT, diff --git a/drivers/rtc/rtc-davinci.c b/drivers/rtc/rtc-davinci.c index fcb71bf4d492..390b7351e0fe 100644 --- a/drivers/rtc/rtc-davinci.c +++ b/drivers/rtc/rtc-davinci.c @@ -469,7 +469,6 @@ static int __init davinci_rtc_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; struct davinci_rtc *davinci_rtc; - struct resource *res; int ret = 0; davinci_rtc = devm_kzalloc(&pdev->dev, sizeof(struct davinci_rtc), GFP_KERNEL); @@ -477,13 +476,10 @@ static int __init davinci_rtc_probe(struct platform_device *pdev) return -ENOMEM; davinci_rtc->irq = platform_get_irq(pdev, 0); - if (davinci_rtc->irq < 0) { - dev_err(dev, "no RTC irq\n"); + if (davinci_rtc->irq < 0) return davinci_rtc->irq; - } - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - davinci_rtc->base = devm_ioremap_resource(dev, res); + davinci_rtc->base = devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(davinci_rtc->base)) return PTR_ERR(davinci_rtc->base); diff --git a/drivers/rtc/rtc-digicolor.c b/drivers/rtc/rtc-digicolor.c index 0aecc3f8e721..200d85b01e8b 100644 --- a/drivers/rtc/rtc-digicolor.c +++ b/drivers/rtc/rtc-digicolor.c @@ -175,7 +175,6 @@ static irqreturn_t dc_rtc_irq(int irq, void *dev_id) static int __init dc_rtc_probe(struct platform_device *pdev) { - struct resource *res; struct dc_rtc *rtc; int irq, ret; @@ -183,8 +182,7 @@ static int __init dc_rtc_probe(struct platform_device *pdev) if (!rtc) return -ENOMEM; - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - rtc->regs = devm_ioremap_resource(&pdev->dev, res); + rtc->regs = devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(rtc->regs)) return PTR_ERR(rtc->regs); diff --git a/drivers/rtc/rtc-ds1216.c b/drivers/rtc/rtc-ds1216.c index b225bcfef50b..7eeb3f359de8 100644 --- a/drivers/rtc/rtc-ds1216.c +++ b/drivers/rtc/rtc-ds1216.c @@ -137,7 +137,6 @@ static const struct rtc_class_ops ds1216_rtc_ops = { static int __init ds1216_rtc_probe(struct platform_device *pdev) { - struct resource *res; struct ds1216_priv *priv; u8 dummy[8]; @@ -147,8 +146,7 @@ static int __init ds1216_rtc_probe(struct platform_device *pdev) platform_set_drvdata(pdev, priv); - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - priv->ioaddr = devm_ioremap_resource(&pdev->dev, res); + priv->ioaddr = devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(priv->ioaddr)) return PTR_ERR(priv->ioaddr); diff --git a/drivers/rtc/rtc-ds1286.c b/drivers/rtc/rtc-ds1286.c index a06508b6c404..7acf849d4902 100644 --- a/drivers/rtc/rtc-ds1286.c +++ b/drivers/rtc/rtc-ds1286.c @@ -323,15 +323,13 @@ static const struct rtc_class_ops ds1286_ops = { static int ds1286_probe(struct platform_device *pdev) { struct rtc_device *rtc; - struct resource *res; struct ds1286_priv *priv; priv = devm_kzalloc(&pdev->dev, sizeof(struct ds1286_priv), GFP_KERNEL); if (!priv) return -ENOMEM; - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - priv->rtcregs = devm_ioremap_resource(&pdev->dev, res); + priv->rtcregs = devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(priv->rtcregs)) return PTR_ERR(priv->rtcregs); diff --git a/drivers/rtc/rtc-ds1302.c b/drivers/rtc/rtc-ds1302.c index 4faa24c88af5..b3de6d2e680a 100644 --- a/drivers/rtc/rtc-ds1302.c +++ b/drivers/rtc/rtc-ds1302.c @@ -15,8 +15,6 @@ #include <linux/rtc.h> #include <linux/spi/spi.h> -#define DRV_NAME "rtc-ds1302" - #define RTC_CMD_READ 0x81 /* Read command */ #define RTC_CMD_WRITE 0x80 /* Write command */ diff --git a/drivers/rtc/rtc-ds1305.c b/drivers/rtc/rtc-ds1305.c index e04d6e862c42..4420fbf2f8fe 100644 --- a/drivers/rtc/rtc-ds1305.c +++ b/drivers/rtc/rtc-ds1305.c @@ -690,19 +690,16 @@ static int ds1305_probe(struct spi_device *spi) /* register RTC ... from here on, ds1305->ctrl needs locking */ ds1305->rtc = devm_rtc_allocate_device(&spi->dev); - if (IS_ERR(ds1305->rtc)) { + if (IS_ERR(ds1305->rtc)) return PTR_ERR(ds1305->rtc); - } ds1305->rtc->ops = &ds1305_ops; ds1305_nvmem_cfg.priv = ds1305; ds1305->rtc->nvram_old_abi = true; status = rtc_register_device(ds1305->rtc); - if (status) { - dev_dbg(&spi->dev, "register rtc --> %d\n", status); + if (status) return status; - } rtc_nvmem_register(ds1305->rtc, &ds1305_nvmem_cfg); diff --git a/drivers/rtc/rtc-ds1343.c b/drivers/rtc/rtc-ds1343.c index fa6de31d5793..ba143423875b 100644 --- a/drivers/rtc/rtc-ds1343.c +++ b/drivers/rtc/rtc-ds1343.c @@ -75,45 +75,21 @@ static const struct spi_device_id ds1343_id[] = { MODULE_DEVICE_TABLE(spi, ds1343_id); struct ds1343_priv { - struct spi_device *spi; struct rtc_device *rtc; struct regmap *map; - struct mutex mutex; - unsigned int irqen; int irq; - int alarm_sec; - int alarm_min; - int alarm_hour; - int alarm_mday; }; -static int ds1343_ioctl(struct device *dev, unsigned int cmd, unsigned long arg) -{ - switch (cmd) { -#ifdef RTC_SET_CHARGE - case RTC_SET_CHARGE: - { - int val; - - if (copy_from_user(&val, (int __user *)arg, sizeof(int))) - return -EFAULT; - - return regmap_write(priv->map, DS1343_TRICKLE_REG, val); - } - break; -#endif - } - - return -ENOIOCTLCMD; -} - static ssize_t ds1343_show_glitchfilter(struct device *dev, struct device_attribute *attr, char *buf) { - struct ds1343_priv *priv = dev_get_drvdata(dev); + struct ds1343_priv *priv = dev_get_drvdata(dev->parent); int glitch_filt_status, data; + int res; - regmap_read(priv->map, DS1343_CONTROL_REG, &data); + res = regmap_read(priv->map, DS1343_CONTROL_REG, &data); + if (res) + return res; glitch_filt_status = !!(data & DS1343_EGFIL); @@ -127,21 +103,19 @@ static ssize_t ds1343_store_glitchfilter(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { - struct ds1343_priv *priv = dev_get_drvdata(dev); - int data; - - regmap_read(priv->map, DS1343_CONTROL_REG, &data); + struct ds1343_priv *priv = dev_get_drvdata(dev->parent); + int data = 0; + int res; if (strncmp(buf, "enabled", 7) == 0) - data |= DS1343_EGFIL; - - else if (strncmp(buf, "disabled", 8) == 0) - data &= ~(DS1343_EGFIL); - - else + data = DS1343_EGFIL; + else if (strncmp(buf, "disabled", 8)) return -EINVAL; - regmap_write(priv->map, DS1343_CONTROL_REG, data); + res = regmap_update_bits(priv->map, DS1343_CONTROL_REG, + DS1343_EGFIL, data); + if (res) + return res; return count; } @@ -168,11 +142,13 @@ static int ds1343_nvram_read(void *priv, unsigned int off, void *val, static ssize_t ds1343_show_tricklecharger(struct device *dev, struct device_attribute *attr, char *buf) { - struct ds1343_priv *priv = dev_get_drvdata(dev); - int data; + struct ds1343_priv *priv = dev_get_drvdata(dev->parent); + int res, data; char *diodes = "disabled", *resistors = " "; - regmap_read(priv->map, DS1343_TRICKLE_REG, &data); + res = regmap_read(priv->map, DS1343_TRICKLE_REG, &data); + if (res) + return res; if ((data & 0xf0) == DS1343_TRICKLE_MAGIC) { switch (data & 0x0c) { @@ -209,28 +185,15 @@ static ssize_t ds1343_show_tricklecharger(struct device *dev, static DEVICE_ATTR(trickle_charger, S_IRUGO, ds1343_show_tricklecharger, NULL); -static int ds1343_sysfs_register(struct device *dev) -{ - int err; - - err = device_create_file(dev, &dev_attr_glitch_filter); - if (err) - return err; - - err = device_create_file(dev, &dev_attr_trickle_charger); - if (!err) - return 0; - - device_remove_file(dev, &dev_attr_glitch_filter); - - return err; -} +static struct attribute *ds1343_attrs[] = { + &dev_attr_glitch_filter.attr, + &dev_attr_trickle_charger.attr, + NULL +}; -static void ds1343_sysfs_unregister(struct device *dev) -{ - device_remove_file(dev, &dev_attr_glitch_filter); - device_remove_file(dev, &dev_attr_trickle_charger); -} +static const struct attribute_group ds1343_attr_group = { + .attrs = ds1343_attrs, +}; static int ds1343_read_time(struct device *dev, struct rtc_time *dt) { @@ -256,144 +219,78 @@ static int ds1343_read_time(struct device *dev, struct rtc_time *dt) static int ds1343_set_time(struct device *dev, struct rtc_time *dt) { struct ds1343_priv *priv = dev_get_drvdata(dev); - int res; - - res = regmap_write(priv->map, DS1343_SECONDS_REG, - bin2bcd(dt->tm_sec)); - if (res) - return res; - - res = regmap_write(priv->map, DS1343_MINUTES_REG, - bin2bcd(dt->tm_min)); - if (res) - return res; - - res = regmap_write(priv->map, DS1343_HOURS_REG, - bin2bcd(dt->tm_hour) & 0x3F); - if (res) - return res; - - res = regmap_write(priv->map, DS1343_DAY_REG, - bin2bcd(dt->tm_wday + 1)); - if (res) - return res; - - res = regmap_write(priv->map, DS1343_DATE_REG, - bin2bcd(dt->tm_mday)); - if (res) - return res; - - res = regmap_write(priv->map, DS1343_MONTH_REG, - bin2bcd(dt->tm_mon + 1)); - if (res) - return res; - - dt->tm_year %= 100; - - res = regmap_write(priv->map, DS1343_YEAR_REG, - bin2bcd(dt->tm_year)); - if (res) - return res; - - return 0; + u8 buf[7]; + + buf[0] = bin2bcd(dt->tm_sec); + buf[1] = bin2bcd(dt->tm_min); + buf[2] = bin2bcd(dt->tm_hour) & 0x3F; + buf[3] = bin2bcd(dt->tm_wday + 1); + buf[4] = bin2bcd(dt->tm_mday); + buf[5] = bin2bcd(dt->tm_mon + 1); + buf[6] = bin2bcd(dt->tm_year - 100); + + return regmap_bulk_write(priv->map, DS1343_SECONDS_REG, + buf, sizeof(buf)); } -static int ds1343_update_alarm(struct device *dev) +static int ds1343_read_alarm(struct device *dev, struct rtc_wkalrm *alarm) { struct ds1343_priv *priv = dev_get_drvdata(dev); - unsigned int control, stat; unsigned char buf[4]; - int res = 0; + unsigned int val; + int res; - res = regmap_read(priv->map, DS1343_CONTROL_REG, &control); - if (res) - return res; + if (priv->irq <= 0) + return -EINVAL; - res = regmap_read(priv->map, DS1343_STATUS_REG, &stat); + res = regmap_read(priv->map, DS1343_STATUS_REG, &val); if (res) return res; - control &= ~(DS1343_A0IE); - stat &= ~(DS1343_IRQF0); + alarm->pending = !!(val & DS1343_IRQF0); - res = regmap_write(priv->map, DS1343_CONTROL_REG, control); + res = regmap_read(priv->map, DS1343_CONTROL_REG, &val); if (res) return res; + alarm->enabled = !!(val & DS1343_A0IE); - res = regmap_write(priv->map, DS1343_STATUS_REG, stat); + res = regmap_bulk_read(priv->map, DS1343_ALM0_SEC_REG, buf, 4); if (res) return res; - buf[0] = priv->alarm_sec < 0 || (priv->irqen & RTC_UF) ? - 0x80 : bin2bcd(priv->alarm_sec) & 0x7F; - buf[1] = priv->alarm_min < 0 || (priv->irqen & RTC_UF) ? - 0x80 : bin2bcd(priv->alarm_min) & 0x7F; - buf[2] = priv->alarm_hour < 0 || (priv->irqen & RTC_UF) ? - 0x80 : bin2bcd(priv->alarm_hour) & 0x3F; - buf[3] = priv->alarm_mday < 0 || (priv->irqen & RTC_UF) ? - 0x80 : bin2bcd(priv->alarm_mday) & 0x7F; - - res = regmap_bulk_write(priv->map, DS1343_ALM0_SEC_REG, buf, 4); - if (res) - return res; + alarm->time.tm_sec = bcd2bin(buf[0]) & 0x7f; + alarm->time.tm_min = bcd2bin(buf[1]) & 0x7f; + alarm->time.tm_hour = bcd2bin(buf[2]) & 0x3f; + alarm->time.tm_mday = bcd2bin(buf[3]) & 0x3f; - if (priv->irqen) { - control |= DS1343_A0IE; - res = regmap_write(priv->map, DS1343_CONTROL_REG, control); - } - - return res; + return 0; } -static int ds1343_read_alarm(struct device *dev, struct rtc_wkalrm *alarm) +static int ds1343_set_alarm(struct device *dev, struct rtc_wkalrm *alarm) { struct ds1343_priv *priv = dev_get_drvdata(dev); + unsigned char buf[4]; int res = 0; - unsigned int stat; if (priv->irq <= 0) return -EINVAL; - mutex_lock(&priv->mutex); - - res = regmap_read(priv->map, DS1343_STATUS_REG, &stat); + res = regmap_update_bits(priv->map, DS1343_CONTROL_REG, DS1343_A0IE, 0); if (res) - goto out; - - alarm->enabled = !!(priv->irqen & RTC_AF); - alarm->pending = !!(stat & DS1343_IRQF0); - - alarm->time.tm_sec = priv->alarm_sec < 0 ? 0 : priv->alarm_sec; - alarm->time.tm_min = priv->alarm_min < 0 ? 0 : priv->alarm_min; - alarm->time.tm_hour = priv->alarm_hour < 0 ? 0 : priv->alarm_hour; - alarm->time.tm_mday = priv->alarm_mday < 0 ? 0 : priv->alarm_mday; - -out: - mutex_unlock(&priv->mutex); - return res; -} - -static int ds1343_set_alarm(struct device *dev, struct rtc_wkalrm *alarm) -{ - struct ds1343_priv *priv = dev_get_drvdata(dev); - int res = 0; - - if (priv->irq <= 0) - return -EINVAL; + return res; - mutex_lock(&priv->mutex); + buf[0] = bin2bcd(alarm->time.tm_sec); + buf[1] = bin2bcd(alarm->time.tm_min); + buf[2] = bin2bcd(alarm->time.tm_hour); + buf[3] = bin2bcd(alarm->time.tm_mday); - priv->alarm_sec = alarm->time.tm_sec; - priv->alarm_min = alarm->time.tm_min; - priv->alarm_hour = alarm->time.tm_hour; - priv->alarm_mday = alarm->time.tm_mday; + res = regmap_bulk_write(priv->map, DS1343_ALM0_SEC_REG, buf, 4); + if (res) + return res; if (alarm->enabled) - priv->irqen |= RTC_AF; - - res = ds1343_update_alarm(dev); - - mutex_unlock(&priv->mutex); + res = regmap_update_bits(priv->map, DS1343_CONTROL_REG, + DS1343_A0IE, DS1343_A0IE); return res; } @@ -401,32 +298,21 @@ static int ds1343_set_alarm(struct device *dev, struct rtc_wkalrm *alarm) static int ds1343_alarm_irq_enable(struct device *dev, unsigned int enabled) { struct ds1343_priv *priv = dev_get_drvdata(dev); - int res = 0; if (priv->irq <= 0) return -EINVAL; - mutex_lock(&priv->mutex); - - if (enabled) - priv->irqen |= RTC_AF; - else - priv->irqen &= ~RTC_AF; - - res = ds1343_update_alarm(dev); - - mutex_unlock(&priv->mutex); - - return res; + return regmap_update_bits(priv->map, DS1343_CONTROL_REG, + DS1343_A0IE, enabled ? DS1343_A0IE : 0); } static irqreturn_t ds1343_thread(int irq, void *dev_id) { struct ds1343_priv *priv = dev_id; - unsigned int stat, control; + unsigned int stat; int res = 0; - mutex_lock(&priv->mutex); + rtc_lock(priv->rtc); res = regmap_read(priv->map, DS1343_STATUS_REG, &stat); if (res) @@ -436,23 +322,18 @@ static irqreturn_t ds1343_thread(int irq, void *dev_id) stat &= ~DS1343_IRQF0; regmap_write(priv->map, DS1343_STATUS_REG, stat); - res = regmap_read(priv->map, DS1343_CONTROL_REG, &control); - if (res) - goto out; - - control &= ~DS1343_A0IE; - regmap_write(priv->map, DS1343_CONTROL_REG, control); - rtc_update_irq(priv->rtc, 1, RTC_AF | RTC_IRQF); + + regmap_update_bits(priv->map, DS1343_CONTROL_REG, + DS1343_A0IE, 0); } out: - mutex_unlock(&priv->mutex); + rtc_unlock(priv->rtc); return IRQ_HANDLED; } static const struct rtc_class_ops ds1343_rtc_ops = { - .ioctl = ds1343_ioctl, .read_time = ds1343_read_time, .set_time = ds1343_set_time, .read_alarm = ds1343_read_alarm, @@ -480,13 +361,13 @@ static int ds1343_probe(struct spi_device *spi) if (!priv) return -ENOMEM; - priv->spi = spi; - mutex_init(&priv->mutex); - /* RTC DS1347 works in spi mode 3 and - * its chip select is active high + * its chip select is active high. Active high should be defined as + * "inverse polarity" as GPIO-based chip selects can be logically + * active high but inverted by the GPIO library. */ - spi->mode = SPI_MODE_3 | SPI_CS_HIGH; + spi->mode |= SPI_MODE_3; + spi->mode ^= SPI_CS_HIGH; spi->bits_per_word = 8; res = spi_setup(spi); if (res) @@ -520,6 +401,13 @@ static int ds1343_probe(struct spi_device *spi) priv->rtc->nvram_old_abi = true; priv->rtc->ops = &ds1343_rtc_ops; + priv->rtc->range_min = RTC_TIMESTAMP_BEGIN_2000; + priv->rtc->range_max = RTC_TIMESTAMP_END_2099; + + res = rtc_add_group(priv->rtc, &ds1343_attr_group); + if (res) + dev_err(&spi->dev, + "unable to create sysfs entries for rtc ds1343\n"); res = rtc_register_device(priv->rtc); if (res) @@ -544,31 +432,12 @@ static int ds1343_probe(struct spi_device *spi) } } - res = ds1343_sysfs_register(&spi->dev); - if (res) - dev_err(&spi->dev, - "unable to create sysfs entries for rtc ds1343\n"); - return 0; } static int ds1343_remove(struct spi_device *spi) { - struct ds1343_priv *priv = spi_get_drvdata(spi); - - if (spi->irq) { - mutex_lock(&priv->mutex); - priv->irqen &= ~RTC_AF; - mutex_unlock(&priv->mutex); - - dev_pm_clear_wake_irq(&spi->dev); - device_init_wakeup(&spi->dev, false); - devm_free_irq(&spi->dev, spi->irq, priv); - } - - spi_set_drvdata(spi, NULL); - - ds1343_sysfs_unregister(&spi->dev); + dev_pm_clear_wake_irq(&spi->dev); return 0; } diff --git a/drivers/rtc/rtc-ds1347.c b/drivers/rtc/rtc-ds1347.c index d392a7bfdd1c..7025cf3fb9f8 100644 --- a/drivers/rtc/rtc-ds1347.c +++ b/drivers/rtc/rtc-ds1347.c @@ -26,9 +26,15 @@ #define DS1347_DAY_REG 0x0B #define DS1347_YEAR_REG 0x0D #define DS1347_CONTROL_REG 0x0F +#define DS1347_CENTURY_REG 0x13 #define DS1347_STATUS_REG 0x17 #define DS1347_CLOCK_BURST 0x3F +#define DS1347_WP_BIT BIT(7) + +#define DS1347_NEOSC_BIT BIT(7) +#define DS1347_OSF_BIT BIT(2) + static const struct regmap_range ds1347_ranges[] = { { .range_min = DS1347_SECONDS_REG, @@ -43,35 +49,54 @@ static const struct regmap_access_table ds1347_access_table = { static int ds1347_read_time(struct device *dev, struct rtc_time *dt) { - struct spi_device *spi = to_spi_device(dev); - struct regmap *map; - int err; + struct regmap *map = dev_get_drvdata(dev); + unsigned int status, century, secs; unsigned char buf[8]; + int err; - map = spi_get_drvdata(spi); - - err = regmap_bulk_read(map, DS1347_CLOCK_BURST, buf, 8); + err = regmap_read(map, DS1347_STATUS_REG, &status); if (err) return err; + if (status & DS1347_OSF_BIT) + return -EINVAL; + + do { + err = regmap_bulk_read(map, DS1347_CLOCK_BURST, buf, 8); + if (err) + return err; + + err = regmap_read(map, DS1347_CENTURY_REG, ¢ury); + if (err) + return err; + + err = regmap_read(map, DS1347_SECONDS_REG, &secs); + if (err) + return err; + } while (buf[0] != secs); + dt->tm_sec = bcd2bin(buf[0]); - dt->tm_min = bcd2bin(buf[1]); + dt->tm_min = bcd2bin(buf[1] & 0x7f); dt->tm_hour = bcd2bin(buf[2] & 0x3F); dt->tm_mday = bcd2bin(buf[3]); dt->tm_mon = bcd2bin(buf[4]) - 1; dt->tm_wday = bcd2bin(buf[5]) - 1; - dt->tm_year = bcd2bin(buf[6]) + 100; + dt->tm_year = (bcd2bin(century) * 100) + bcd2bin(buf[6]) - 1900; return 0; } static int ds1347_set_time(struct device *dev, struct rtc_time *dt) { - struct spi_device *spi = to_spi_device(dev); - struct regmap *map; + struct regmap *map = dev_get_drvdata(dev); + unsigned int century; unsigned char buf[8]; + int err; - map = spi_get_drvdata(spi); + err = regmap_update_bits(map, DS1347_STATUS_REG, + DS1347_NEOSC_BIT, DS1347_NEOSC_BIT); + if (err) + return err; buf[0] = bin2bcd(dt->tm_sec); buf[1] = bin2bcd(dt->tm_min); @@ -79,16 +104,20 @@ static int ds1347_set_time(struct device *dev, struct rtc_time *dt) buf[3] = bin2bcd(dt->tm_mday); buf[4] = bin2bcd(dt->tm_mon + 1); buf[5] = bin2bcd(dt->tm_wday + 1); + buf[6] = bin2bcd(dt->tm_year % 100); + buf[7] = bin2bcd(0x00); - /* year in linux is from 1900 i.e in range of 100 - in rtc it is from 00 to 99 */ - dt->tm_year = dt->tm_year % 100; + err = regmap_bulk_write(map, DS1347_CLOCK_BURST, buf, 8); + if (err) + return err; - buf[6] = bin2bcd(dt->tm_year); - buf[7] = bin2bcd(0x00); + century = (dt->tm_year / 100) + 19; + err = regmap_write(map, DS1347_CENTURY_REG, century); + if (err) + return err; - /* write the rtc settings */ - return regmap_bulk_write(map, DS1347_CLOCK_BURST, buf, 8); + return regmap_update_bits(map, DS1347_STATUS_REG, + DS1347_NEOSC_BIT | DS1347_OSF_BIT, 0); } static const struct rtc_class_ops ds1347_rtc_ops = { @@ -101,8 +130,7 @@ static int ds1347_probe(struct spi_device *spi) struct rtc_device *rtc; struct regmap_config config; struct regmap *map; - unsigned int data; - int res; + int err; memset(&config, 0, sizeof(config)); config.reg_bits = 8; @@ -125,36 +153,20 @@ static int ds1347_probe(struct spi_device *spi) spi_set_drvdata(spi, map); - /* RTC Settings */ - res = regmap_read(map, DS1347_SECONDS_REG, &data); - if (res) - return res; - /* Disable the write protect of rtc */ - regmap_read(map, DS1347_CONTROL_REG, &data); - data = data & ~(1<<7); - regmap_write(map, DS1347_CONTROL_REG, data); - - /* Enable the oscillator , disable the oscillator stop flag, - and glitch filter to reduce current consumption */ - regmap_read(map, DS1347_STATUS_REG, &data); - data = data & 0x1B; - regmap_write(map, DS1347_STATUS_REG, data); - - /* display the settings */ - regmap_read(map, DS1347_CONTROL_REG, &data); - dev_info(&spi->dev, "DS1347 RTC CTRL Reg = 0x%02x\n", data); - - regmap_read(map, DS1347_STATUS_REG, &data); - dev_info(&spi->dev, "DS1347 RTC Status Reg = 0x%02x\n", data); - - rtc = devm_rtc_device_register(&spi->dev, "ds1347", - &ds1347_rtc_ops, THIS_MODULE); + err = regmap_update_bits(map, DS1347_CONTROL_REG, DS1347_WP_BIT, 0); + if (err) + return err; + rtc = devm_rtc_allocate_device(&spi->dev); if (IS_ERR(rtc)) return PTR_ERR(rtc); - return 0; + rtc->ops = &ds1347_rtc_ops; + rtc->range_min = RTC_TIMESTAMP_BEGIN_0000; + rtc->range_max = RTC_TIMESTAMP_END_9999; + + return rtc_register_device(rtc); } static struct spi_driver ds1347_driver = { diff --git a/drivers/rtc/rtc-ds1374.c b/drivers/rtc/rtc-ds1374.c index 225a8df1d4e9..6e9ddcd03992 100644 --- a/drivers/rtc/rtc-ds1374.c +++ b/drivers/rtc/rtc-ds1374.c @@ -14,7 +14,7 @@ */ /* * It would be more efficient to use i2c msgs/i2c_transfer directly but, as - * recommened in .../Documentation/i2c/writing-clients section + * recommended in .../Documentation/i2c/writing-clients.rst section * "Sending and receiving", using SMBus level communication is preferred. */ @@ -439,14 +439,13 @@ static void ds1374_wdt_ping(void) static void ds1374_wdt_disable(void) { - int ret = -ENOIOCTLCMD; int cr; cr = i2c_smbus_read_byte_data(save_client, DS1374_REG_CR); /* Disable watchdog timer */ cr &= ~DS1374_REG_CR_WACE; - ret = i2c_smbus_write_byte_data(save_client, DS1374_REG_CR, cr); + i2c_smbus_write_byte_data(save_client, DS1374_REG_CR, cr); } /* @@ -586,6 +585,7 @@ static const struct file_operations ds1374_wdt_fops = { .owner = THIS_MODULE, .read = ds1374_wdt_read, .unlocked_ioctl = ds1374_wdt_unlocked_ioctl, + .compat_ioctl = compat_ptr_ioctl, .write = ds1374_wdt_write, .open = ds1374_wdt_open, .release = ds1374_wdt_release, diff --git a/drivers/rtc/rtc-ds1511.c b/drivers/rtc/rtc-ds1511.c index b6a477519280..a63872c4c76d 100644 --- a/drivers/rtc/rtc-ds1511.c +++ b/drivers/rtc/rtc-ds1511.c @@ -414,7 +414,6 @@ static int ds1511_nvram_write(void *priv, unsigned int pos, void *buf, static int ds1511_rtc_probe(struct platform_device *pdev) { - struct resource *res; struct rtc_plat_data *pdata; int ret = 0; struct nvmem_config ds1511_nvmem_cfg = { @@ -431,8 +430,7 @@ static int ds1511_rtc_probe(struct platform_device *pdev) if (!pdata) return -ENOMEM; - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - ds1511_base = devm_ioremap_resource(&pdev->dev, res); + ds1511_base = devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(ds1511_base)) return PTR_ERR(ds1511_base); pdata->ioaddr = ds1511_base; diff --git a/drivers/rtc/rtc-ds1553.c b/drivers/rtc/rtc-ds1553.c index 219d6b520a69..cdf5e05b9489 100644 --- a/drivers/rtc/rtc-ds1553.c +++ b/drivers/rtc/rtc-ds1553.c @@ -249,7 +249,6 @@ static int ds1553_nvram_write(void *priv, unsigned int pos, void *val, static int ds1553_rtc_probe(struct platform_device *pdev) { - struct resource *res; unsigned int cen, sec; struct rtc_plat_data *pdata; void __iomem *ioaddr; @@ -268,8 +267,7 @@ static int ds1553_rtc_probe(struct platform_device *pdev) if (!pdata) return -ENOMEM; - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - ioaddr = devm_ioremap_resource(&pdev->dev, res); + ioaddr = devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(ioaddr)) return PTR_ERR(ioaddr); pdata->ioaddr = ioaddr; diff --git a/drivers/rtc/rtc-ds1672.c b/drivers/rtc/rtc-ds1672.c index e9e8d02743ee..9da84df9f152 100644 --- a/drivers/rtc/rtc-ds1672.c +++ b/drivers/rtc/rtc-ds1672.c @@ -128,9 +128,6 @@ static int ds1672_probe(struct i2c_client *client, if (err) return err; - if (IS_ERR(rtc)) - return PTR_ERR(rtc); - i2c_set_clientdata(client, rtc); return 0; diff --git a/drivers/rtc/rtc-ds1685.c b/drivers/rtc/rtc-ds1685.c index 184e4a3e2bef..56c670af2e50 100644 --- a/drivers/rtc/rtc-ds1685.c +++ b/drivers/rtc/rtc-ds1685.c @@ -31,7 +31,10 @@ /* ----------------------------------------------------------------------- */ -/* Standard read/write functions if platform does not provide overrides */ +/* + * Standard read/write + * all registers are mapped in CPU address space + */ /** * ds1685_read - read a value from an rtc register. @@ -59,6 +62,35 @@ ds1685_write(struct ds1685_priv *rtc, int reg, u8 value) } /* ----------------------------------------------------------------------- */ +/* + * Indirect read/write functions + * access happens via address and data register mapped in CPU address space + */ + +/** + * ds1685_indirect_read - read a value from an rtc register. + * @rtc: pointer to the ds1685 rtc structure. + * @reg: the register address to read. + */ +static u8 +ds1685_indirect_read(struct ds1685_priv *rtc, int reg) +{ + writeb(reg, rtc->regs); + return readb(rtc->data); +} + +/** + * ds1685_indirect_write - write a value to an rtc register. + * @rtc: pointer to the ds1685 rtc structure. + * @reg: the register address to write. + * @value: value to write to the register. + */ +static void +ds1685_indirect_write(struct ds1685_priv *rtc, int reg, u8 value) +{ + writeb(reg, rtc->regs); + writeb(value, rtc->data); +} /* ----------------------------------------------------------------------- */ /* Inlined functions */ @@ -229,7 +261,7 @@ static int ds1685_rtc_read_time(struct device *dev, struct rtc_time *tm) { struct ds1685_priv *rtc = dev_get_drvdata(dev); - u8 ctrlb, century; + u8 century; u8 seconds, minutes, hours, wday, mday, month, years; /* Fetch the time info from the RTC registers. */ @@ -242,7 +274,6 @@ ds1685_rtc_read_time(struct device *dev, struct rtc_time *tm) month = rtc->read(rtc, RTC_MONTH); years = rtc->read(rtc, RTC_YEAR); century = rtc->read(rtc, RTC_CENTURY); - ctrlb = rtc->read(rtc, RTC_CTRL_B); ds1685_rtc_end_data_access(rtc); /* bcd2bin if needed, perform fixups, and store to rtc_time. */ @@ -723,7 +754,7 @@ static int ds1685_rtc_proc(struct device *dev, struct seq_file *seq) { struct ds1685_priv *rtc = dev_get_drvdata(dev); - u8 ctrla, ctrlb, ctrlc, ctrld, ctrl4a, ctrl4b, ssn[8]; + u8 ctrla, ctrlb, ctrld, ctrl4a, ctrl4b, ssn[8]; char *model; /* Read all the relevant data from the control registers. */ @@ -731,7 +762,6 @@ ds1685_rtc_proc(struct device *dev, struct seq_file *seq) ds1685_rtc_get_ssn(rtc, ssn); ctrla = rtc->read(rtc, RTC_CTRL_A); ctrlb = rtc->read(rtc, RTC_CTRL_B); - ctrlc = rtc->read(rtc, RTC_CTRL_C); ctrld = rtc->read(rtc, RTC_CTRL_D); ctrl4a = rtc->read(rtc, RTC_EXT_CTRL_4A); ctrl4b = rtc->read(rtc, RTC_EXT_CTRL_4B); @@ -1009,7 +1039,7 @@ ds1685_rtc_sysfs_serial_show(struct device *dev, } static DEVICE_ATTR(serial, S_IRUGO, ds1685_rtc_sysfs_serial_show, NULL); -/** +/* * struct ds1685_rtc_sysfs_misc_attrs - list for misc RTC features. */ static struct attribute* @@ -1020,7 +1050,7 @@ ds1685_rtc_sysfs_misc_attrs[] = { NULL, }; -/** +/* * struct ds1685_rtc_sysfs_misc_grp - attr group for misc RTC features. */ static const struct attribute_group @@ -1040,7 +1070,6 @@ static int ds1685_rtc_probe(struct platform_device *pdev) { struct rtc_device *rtc_dev; - struct resource *res; struct ds1685_priv *rtc; struct ds1685_rtc_platform_data *pdata; u8 ctrla, ctrlb, hours; @@ -1063,35 +1092,29 @@ ds1685_rtc_probe(struct platform_device *pdev) if (!rtc) return -ENOMEM; - /* - * Allocate/setup any IORESOURCE_MEM resources, if required. Not all - * platforms put the RTC in an easy-access place. Like the SGI Octane, - * which attaches the RTC to a "ByteBus", hooked to a SuperIO chip - * that sits behind the IOC3 PCI metadevice. - */ - if (pdata->alloc_io_resources) { - /* Get the platform resources. */ - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - if (!res) - return -ENXIO; - rtc->size = resource_size(res); - - /* Request a memory region. */ - /* XXX: mmio-only for now. */ - if (!devm_request_mem_region(&pdev->dev, res->start, rtc->size, - pdev->name)) - return -EBUSY; - - /* - * Set the base address for the rtc, and ioremap its - * registers. - */ - rtc->baseaddr = res->start; - rtc->regs = devm_ioremap(&pdev->dev, res->start, rtc->size); - if (!rtc->regs) - return -ENOMEM; + /* Setup resources and access functions */ + switch (pdata->access_type) { + case ds1685_reg_direct: + rtc->regs = devm_platform_ioremap_resource(pdev, 0); + if (IS_ERR(rtc->regs)) + return PTR_ERR(rtc->regs); + rtc->read = ds1685_read; + rtc->write = ds1685_write; + break; + case ds1685_reg_indirect: + rtc->regs = devm_platform_ioremap_resource(pdev, 0); + if (IS_ERR(rtc->regs)) + return PTR_ERR(rtc->regs); + rtc->data = devm_platform_ioremap_resource(pdev, 1); + if (IS_ERR(rtc->data)) + return PTR_ERR(rtc->data); + rtc->read = ds1685_indirect_read; + rtc->write = ds1685_indirect_write; + break; } - rtc->alloc_io_resources = pdata->alloc_io_resources; + + if (!rtc->read || !rtc->write) + return -ENXIO; /* Get the register step size. */ if (pdata->regstep > 0) @@ -1099,24 +1122,6 @@ ds1685_rtc_probe(struct platform_device *pdev) else rtc->regstep = 1; - /* Platform read function, else default if mmio setup */ - if (pdata->plat_read) - rtc->read = pdata->plat_read; - else - if (pdata->alloc_io_resources) - rtc->read = ds1685_read; - else - return -ENXIO; - - /* Platform write function, else default if mmio setup */ - if (pdata->plat_write) - rtc->write = pdata->plat_write; - else - if (pdata->alloc_io_resources) - rtc->write = ds1685_write; - else - return -ENXIO; - /* Platform pre-shutdown function, if defined. */ if (pdata->plat_prepare_poweroff) rtc->prepare_poweroff = pdata->plat_prepare_poweroff; @@ -1271,7 +1276,6 @@ ds1685_rtc_probe(struct platform_device *pdev) /* See if the platform doesn't support UIE. */ if (pdata->uie_unsupported) rtc_dev->uie_unsupported = 1; - rtc->uie_unsupported = pdata->uie_unsupported; rtc->dev = rtc_dev; @@ -1351,7 +1355,7 @@ ds1685_rtc_remove(struct platform_device *pdev) return 0; } -/** +/* * ds1685_rtc_driver - rtc driver properties. */ static struct platform_driver ds1685_rtc_driver = { diff --git a/drivers/rtc/rtc-em3027.c b/drivers/rtc/rtc-em3027.c index 77cca1392253..9f176bce48ba 100644 --- a/drivers/rtc/rtc-em3027.c +++ b/drivers/rtc/rtc-em3027.c @@ -71,7 +71,7 @@ static int em3027_get_time(struct device *dev, struct rtc_time *tm) tm->tm_hour = bcd2bin(buf[2]); tm->tm_mday = bcd2bin(buf[3]); tm->tm_wday = bcd2bin(buf[4]); - tm->tm_mon = bcd2bin(buf[5]); + tm->tm_mon = bcd2bin(buf[5]) - 1; tm->tm_year = bcd2bin(buf[6]) + 100; return 0; @@ -94,7 +94,7 @@ static int em3027_set_time(struct device *dev, struct rtc_time *tm) buf[3] = bin2bcd(tm->tm_hour); buf[4] = bin2bcd(tm->tm_mday); buf[5] = bin2bcd(tm->tm_wday); - buf[6] = bin2bcd(tm->tm_mon); + buf[6] = bin2bcd(tm->tm_mon + 1); buf[7] = bin2bcd(tm->tm_year % 100); /* write time/date registers */ diff --git a/drivers/rtc/rtc-ep93xx.c b/drivers/rtc/rtc-ep93xx.c index 1766496385fe..8ec9ea1ca72e 100644 --- a/drivers/rtc/rtc-ep93xx.c +++ b/drivers/rtc/rtc-ep93xx.c @@ -122,15 +122,13 @@ static const struct attribute_group ep93xx_rtc_sysfs_files = { static int ep93xx_rtc_probe(struct platform_device *pdev) { struct ep93xx_rtc *ep93xx_rtc; - struct resource *res; int err; ep93xx_rtc = devm_kzalloc(&pdev->dev, sizeof(*ep93xx_rtc), GFP_KERNEL); if (!ep93xx_rtc) return -ENOMEM; - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - ep93xx_rtc->mmio_base = devm_ioremap_resource(&pdev->dev, res); + ep93xx_rtc->mmio_base = devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(ep93xx_rtc->mmio_base)) return PTR_ERR(ep93xx_rtc->mmio_base); diff --git a/drivers/rtc/rtc-fsl-ftm-alarm.c b/drivers/rtc/rtc-fsl-ftm-alarm.c new file mode 100644 index 000000000000..9e6e994cce99 --- /dev/null +++ b/drivers/rtc/rtc-fsl-ftm-alarm.c @@ -0,0 +1,325 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Freescale FlexTimer Module (FTM) alarm device driver. + * + * Copyright 2014 Freescale Semiconductor, Inc. + * Copyright 2019 NXP + * + */ + +#include <linux/device.h> +#include <linux/err.h> +#include <linux/interrupt.h> +#include <linux/io.h> +#include <linux/of_address.h> +#include <linux/of_irq.h> +#include <linux/platform_device.h> +#include <linux/of.h> +#include <linux/of_device.h> +#include <linux/module.h> +#include <linux/fsl/ftm.h> +#include <linux/rtc.h> +#include <linux/time.h> + +#define FTM_SC_CLK(c) ((c) << FTM_SC_CLK_MASK_SHIFT) + +/* + * Select Fixed frequency clock (32KHz) as clock source + * of FlexTimer Module + */ +#define FTM_SC_CLKS_FIXED_FREQ 0x02 +#define FIXED_FREQ_CLK 32000 + +/* Select 128 (2^7) as divider factor */ +#define MAX_FREQ_DIV (1 << FTM_SC_PS_MASK) + +/* Maximum counter value in FlexTimer's CNT registers */ +#define MAX_COUNT_VAL 0xffff + +struct ftm_rtc { + struct rtc_device *rtc_dev; + void __iomem *base; + bool big_endian; + u32 alarm_freq; +}; + +static inline u32 rtc_readl(struct ftm_rtc *dev, u32 reg) +{ + if (dev->big_endian) + return ioread32be(dev->base + reg); + else + return ioread32(dev->base + reg); +} + +static inline void rtc_writel(struct ftm_rtc *dev, u32 reg, u32 val) +{ + if (dev->big_endian) + iowrite32be(val, dev->base + reg); + else + iowrite32(val, dev->base + reg); +} + +static inline void ftm_counter_enable(struct ftm_rtc *rtc) +{ + u32 val; + + /* select and enable counter clock source */ + val = rtc_readl(rtc, FTM_SC); + val &= ~(FTM_SC_PS_MASK | FTM_SC_CLK_MASK); + val |= (FTM_SC_PS_MASK | FTM_SC_CLK(FTM_SC_CLKS_FIXED_FREQ)); + rtc_writel(rtc, FTM_SC, val); +} + +static inline void ftm_counter_disable(struct ftm_rtc *rtc) +{ + u32 val; + + /* disable counter clock source */ + val = rtc_readl(rtc, FTM_SC); + val &= ~(FTM_SC_PS_MASK | FTM_SC_CLK_MASK); + rtc_writel(rtc, FTM_SC, val); +} + +static inline void ftm_irq_acknowledge(struct ftm_rtc *rtc) +{ + unsigned int timeout = 100; + + /* + *Fix errata A-007728 for flextimer + * If the FTM counter reaches the FTM_MOD value between + * the reading of the TOF bit and the writing of 0 to + * the TOF bit, the process of clearing the TOF bit + * does not work as expected when FTMx_CONF[NUMTOF] != 0 + * and the current TOF count is less than FTMx_CONF[NUMTOF]. + * If the above condition is met, the TOF bit remains set. + * If the TOF interrupt is enabled (FTMx_SC[TOIE] = 1),the + * TOF interrupt also remains asserted. + * + * Above is the errata discription + * + * In one word: software clearing TOF bit not works when + * FTMx_CONF[NUMTOF] was seted as nonzero and FTM counter + * reaches the FTM_MOD value. + * + * The workaround is clearing TOF bit until it works + * (FTM counter doesn't always reache the FTM_MOD anyway), + * which may cost some cycles. + */ + while ((FTM_SC_TOF & rtc_readl(rtc, FTM_SC)) && timeout--) + rtc_writel(rtc, FTM_SC, rtc_readl(rtc, FTM_SC) & (~FTM_SC_TOF)); +} + +static inline void ftm_irq_enable(struct ftm_rtc *rtc) +{ + u32 val; + + val = rtc_readl(rtc, FTM_SC); + val |= FTM_SC_TOIE; + rtc_writel(rtc, FTM_SC, val); +} + +static inline void ftm_irq_disable(struct ftm_rtc *rtc) +{ + u32 val; + + val = rtc_readl(rtc, FTM_SC); + val &= ~FTM_SC_TOIE; + rtc_writel(rtc, FTM_SC, val); +} + +static inline void ftm_reset_counter(struct ftm_rtc *rtc) +{ + /* + * The CNT register contains the FTM counter value. + * Reset clears the CNT register. Writing any value to COUNT + * updates the counter with its initial value, CNTIN. + */ + rtc_writel(rtc, FTM_CNT, 0x00); +} + +static void ftm_clean_alarm(struct ftm_rtc *rtc) +{ + ftm_counter_disable(rtc); + + rtc_writel(rtc, FTM_CNTIN, 0x00); + rtc_writel(rtc, FTM_MOD, ~0U); + + ftm_reset_counter(rtc); +} + +static irqreturn_t ftm_rtc_alarm_interrupt(int irq, void *dev) +{ + struct ftm_rtc *rtc = dev; + + ftm_irq_acknowledge(rtc); + ftm_irq_disable(rtc); + ftm_clean_alarm(rtc); + + return IRQ_HANDLED; +} + +static int ftm_rtc_alarm_irq_enable(struct device *dev, + unsigned int enabled) +{ + struct ftm_rtc *rtc = dev_get_drvdata(dev); + + if (enabled) + ftm_irq_enable(rtc); + else + ftm_irq_disable(rtc); + + return 0; +} + +/* + * Note: + * The function is not really getting time from the RTC + * since FlexTimer is not a RTC device, but we need to + * get time to setup alarm, so we are using system time + * for now. + */ +static int ftm_rtc_read_time(struct device *dev, struct rtc_time *tm) +{ + rtc_time64_to_tm(ktime_get_real_seconds(), tm); + + return 0; +} + +static int ftm_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alm) +{ + return 0; +} + +/* + * 1. Select fixed frequency clock (32KHz) as clock source; + * 2. Select 128 (2^7) as divider factor; + * So clock is 250 Hz (32KHz/128). + * + * 3. FlexTimer's CNT register is a 32bit register, + * but the register's 16 bit as counter value,it's other 16 bit + * is reserved.So minimum counter value is 0x0,maximum counter + * value is 0xffff. + * So max alarm value is 262 (65536 / 250) seconds + */ +static int ftm_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alm) +{ + time64_t alm_time; + unsigned long long cycle; + struct ftm_rtc *rtc = dev_get_drvdata(dev); + + alm_time = rtc_tm_to_time64(&alm->time); + + ftm_clean_alarm(rtc); + cycle = (alm_time - ktime_get_real_seconds()) * rtc->alarm_freq; + if (cycle > MAX_COUNT_VAL) { + pr_err("Out of alarm range {0~262} seconds.\n"); + return -ERANGE; + } + + ftm_irq_disable(rtc); + + /* + * The counter increments until the value of MOD is reached, + * at which point the counter is reloaded with the value of CNTIN. + * The TOF (the overflow flag) bit is set when the FTM counter + * changes from MOD to CNTIN. So we should using the cycle - 1. + */ + rtc_writel(rtc, FTM_MOD, cycle - 1); + + ftm_counter_enable(rtc); + ftm_irq_enable(rtc); + + return 0; + +} + +static const struct rtc_class_ops ftm_rtc_ops = { + .read_time = ftm_rtc_read_time, + .read_alarm = ftm_rtc_read_alarm, + .set_alarm = ftm_rtc_set_alarm, + .alarm_irq_enable = ftm_rtc_alarm_irq_enable, +}; + +static int ftm_rtc_probe(struct platform_device *pdev) +{ + struct device_node *np = pdev->dev.of_node; + int irq; + int ret; + struct ftm_rtc *rtc; + + rtc = devm_kzalloc(&pdev->dev, sizeof(*rtc), GFP_KERNEL); + if (unlikely(!rtc)) { + dev_err(&pdev->dev, "cannot alloc memory for rtc\n"); + return -ENOMEM; + } + + platform_set_drvdata(pdev, rtc); + + rtc->rtc_dev = devm_rtc_allocate_device(&pdev->dev); + if (IS_ERR(rtc->rtc_dev)) + return PTR_ERR(rtc->rtc_dev); + + rtc->base = devm_platform_ioremap_resource(pdev, 0); + if (IS_ERR(rtc->base)) { + dev_err(&pdev->dev, "cannot ioremap resource for rtc\n"); + return PTR_ERR(rtc->base); + } + + irq = irq_of_parse_and_map(np, 0); + if (irq <= 0) { + dev_err(&pdev->dev, "unable to get IRQ from DT, %d\n", irq); + return -EINVAL; + } + + ret = devm_request_irq(&pdev->dev, irq, ftm_rtc_alarm_interrupt, + IRQF_NO_SUSPEND, dev_name(&pdev->dev), rtc); + if (ret < 0) { + dev_err(&pdev->dev, "failed to request irq\n"); + return ret; + } + + rtc->big_endian = of_property_read_bool(np, "big-endian"); + rtc->alarm_freq = (u32)FIXED_FREQ_CLK / (u32)MAX_FREQ_DIV; + rtc->rtc_dev->ops = &ftm_rtc_ops; + + device_init_wakeup(&pdev->dev, true); + + ret = rtc_register_device(rtc->rtc_dev); + if (ret) { + dev_err(&pdev->dev, "can't register rtc device\n"); + return ret; + } + + return 0; +} + +static const struct of_device_id ftm_rtc_match[] = { + { .compatible = "fsl,ls1012a-ftm-alarm", }, + { .compatible = "fsl,ls1021a-ftm-alarm", }, + { .compatible = "fsl,ls1028a-ftm-alarm", }, + { .compatible = "fsl,ls1043a-ftm-alarm", }, + { .compatible = "fsl,ls1046a-ftm-alarm", }, + { .compatible = "fsl,ls1088a-ftm-alarm", }, + { .compatible = "fsl,ls208xa-ftm-alarm", }, + { .compatible = "fsl,lx2160a-ftm-alarm", }, + { }, +}; + +static struct platform_driver ftm_rtc_driver = { + .probe = ftm_rtc_probe, + .driver = { + .name = "ftm-alarm", + .of_match_table = ftm_rtc_match, + }, +}; + +static int __init ftm_alarm_init(void) +{ + return platform_driver_register(&ftm_rtc_driver); +} + +device_initcall(ftm_alarm_init); + +MODULE_DESCRIPTION("NXP/Freescale FlexTimer alarm driver"); +MODULE_AUTHOR("Biwen Li <biwen.li@nxp.com>"); +MODULE_LICENSE("GPL"); diff --git a/drivers/rtc/rtc-goldfish.c b/drivers/rtc/rtc-goldfish.c index 1a3420ee6a4d..cb6b0ad7ec3f 100644 --- a/drivers/rtc/rtc-goldfish.c +++ b/drivers/rtc/rtc-goldfish.c @@ -165,7 +165,6 @@ static const struct rtc_class_ops goldfish_rtc_ops = { static int goldfish_rtc_probe(struct platform_device *pdev) { struct goldfish_rtc *rtcdrv; - struct resource *r; int err; rtcdrv = devm_kzalloc(&pdev->dev, sizeof(*rtcdrv), GFP_KERNEL); @@ -173,12 +172,7 @@ static int goldfish_rtc_probe(struct platform_device *pdev) return -ENOMEM; platform_set_drvdata(pdev, rtcdrv); - - r = platform_get_resource(pdev, IORESOURCE_MEM, 0); - if (!r) - return -ENODEV; - - rtcdrv->base = devm_ioremap_resource(&pdev->dev, r); + rtcdrv->base = devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(rtcdrv->base)) return -ENODEV; diff --git a/drivers/rtc/rtc-hym8563.c b/drivers/rtc/rtc-hym8563.c index 443f6d05ce29..0fb79c4afb46 100644 --- a/drivers/rtc/rtc-hym8563.c +++ b/drivers/rtc/rtc-hym8563.c @@ -78,7 +78,6 @@ struct hym8563 { struct i2c_client *client; struct rtc_device *rtc; - bool valid; #ifdef CONFIG_COMMON_CLK struct clk_hw clkout_hw; #endif @@ -91,19 +90,19 @@ struct hym8563 { static int hym8563_rtc_read_time(struct device *dev, struct rtc_time *tm) { struct i2c_client *client = to_i2c_client(dev); - struct hym8563 *hym8563 = i2c_get_clientdata(client); u8 buf[7]; int ret; - if (!hym8563->valid) { - dev_warn(&client->dev, "no valid clock/calendar values available\n"); - return -EPERM; - } - ret = i2c_smbus_read_i2c_block_data(client, HYM8563_SEC, 7, buf); if (ret < 0) return ret; + if (buf[0] & HYM8563_SEC_VL) { + dev_warn(&client->dev, + "no valid clock/calendar values available\n"); + return -EINVAL; + } + tm->tm_sec = bcd2bin(buf[0] & HYM8563_SEC_MASK); tm->tm_min = bcd2bin(buf[1] & HYM8563_MIN_MASK); tm->tm_hour = bcd2bin(buf[2] & HYM8563_HOUR_MASK); @@ -118,7 +117,6 @@ static int hym8563_rtc_read_time(struct device *dev, struct rtc_time *tm) static int hym8563_rtc_set_time(struct device *dev, struct rtc_time *tm) { struct i2c_client *client = to_i2c_client(dev); - struct hym8563 *hym8563 = i2c_get_clientdata(client); u8 buf[7]; int ret; @@ -157,8 +155,6 @@ static int hym8563_rtc_set_time(struct device *dev, struct rtc_time *tm) if (ret < 0) return ret; - hym8563->valid = true; - return 0; } @@ -556,9 +552,8 @@ static int hym8563_probe(struct i2c_client *client, if (ret < 0) return ret; - hym8563->valid = !(ret & HYM8563_SEC_VL); dev_dbg(&client->dev, "rtc information is %s\n", - hym8563->valid ? "valid" : "invalid"); + (ret & HYM8563_SEC_VL) ? "invalid" : "valid"); hym8563->rtc = devm_rtc_device_register(&client->dev, client->name, &hym8563_rtc_ops, THIS_MODULE); diff --git a/drivers/rtc/rtc-imx-sc.c b/drivers/rtc/rtc-imx-sc.c index c933045fe04b..cf2c12107f2b 100644 --- a/drivers/rtc/rtc-imx-sc.c +++ b/drivers/rtc/rtc-imx-sc.c @@ -167,10 +167,8 @@ static int imx_sc_rtc_probe(struct platform_device *pdev) imx_sc_rtc->range_max = U32_MAX; ret = rtc_register_device(imx_sc_rtc); - if (ret) { - dev_err(&pdev->dev, "failed to register rtc: %d\n", ret); + if (ret) return ret; - } imx_scu_irq_register_notifier(&imx_sc_rtc_alarm_sc_notifier); diff --git a/drivers/rtc/rtc-imxdi.c b/drivers/rtc/rtc-imxdi.c index 3f3d652a0b0f..f21dc6b16d88 100644 --- a/drivers/rtc/rtc-imxdi.c +++ b/drivers/rtc/rtc-imxdi.c @@ -740,7 +740,6 @@ static void dryice_work(struct work_struct *work) */ static int __init dryice_rtc_probe(struct platform_device *pdev) { - struct resource *res; struct imxdi_dev *imxdi; int norm_irq, sec_irq; int rc; @@ -751,8 +750,7 @@ static int __init dryice_rtc_probe(struct platform_device *pdev) imxdi->pdev = pdev; - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - imxdi->ioaddr = devm_ioremap_resource(&pdev->dev, res); + imxdi->ioaddr = devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(imxdi->ioaddr)) return PTR_ERR(imxdi->ioaddr); diff --git a/drivers/rtc/rtc-isl12026.c b/drivers/rtc/rtc-isl12026.c index 97f594f9667c..5b6b17fb6d62 100644 --- a/drivers/rtc/rtc-isl12026.c +++ b/drivers/rtc/rtc-isl12026.c @@ -454,9 +454,9 @@ static int isl12026_probe_new(struct i2c_client *client) isl12026_force_power_modes(client); - priv->nvm_client = i2c_new_dummy(client->adapter, ISL12026_EEPROM_ADDR); - if (!priv->nvm_client) - return -ENOMEM; + priv->nvm_client = i2c_new_dummy_device(client->adapter, ISL12026_EEPROM_ADDR); + if (IS_ERR(priv->nvm_client)) + return PTR_ERR(priv->nvm_client); priv->rtc = devm_rtc_allocate_device(&client->dev); ret = PTR_ERR_OR_ZERO(priv->rtc); diff --git a/drivers/rtc/rtc-jz4740.c b/drivers/rtc/rtc-jz4740.c index 9e7b3a04debc..18023e472cbc 100644 --- a/drivers/rtc/rtc-jz4740.c +++ b/drivers/rtc/rtc-jz4740.c @@ -307,7 +307,6 @@ static int jz4740_rtc_probe(struct platform_device *pdev) { int ret; struct jz4740_rtc *rtc; - struct resource *mem; const struct platform_device_id *id = platform_get_device_id(pdev); const struct of_device_id *of_id = of_match_device( jz4740_rtc_of_match, &pdev->dev); @@ -323,13 +322,10 @@ static int jz4740_rtc_probe(struct platform_device *pdev) rtc->type = id->driver_data; rtc->irq = platform_get_irq(pdev, 0); - if (rtc->irq < 0) { - dev_err(&pdev->dev, "Failed to get platform irq\n"); + if (rtc->irq < 0) return -ENOENT; - } - mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); - rtc->base = devm_ioremap_resource(&pdev->dev, mem); + rtc->base = devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(rtc->base)) return PTR_ERR(rtc->base); @@ -362,10 +358,8 @@ static int jz4740_rtc_probe(struct platform_device *pdev) rtc->rtc->range_max = U32_MAX; ret = rtc_register_device(rtc->rtc); - if (ret) { - dev_err(&pdev->dev, "Failed to register rtc device: %d\n", ret); + if (ret) return ret; - } ret = devm_request_irq(&pdev->dev, rtc->irq, jz4740_rtc_irq, 0, pdev->name, rtc); diff --git a/drivers/rtc/rtc-lpc24xx.c b/drivers/rtc/rtc-lpc24xx.c index a8bb15606ec8..00ef16ba9480 100644 --- a/drivers/rtc/rtc-lpc24xx.c +++ b/drivers/rtc/rtc-lpc24xx.c @@ -194,15 +194,13 @@ static const struct rtc_class_ops lpc24xx_rtc_ops = { static int lpc24xx_rtc_probe(struct platform_device *pdev) { struct lpc24xx_rtc *rtc; - struct resource *res; int irq, ret; rtc = devm_kzalloc(&pdev->dev, sizeof(*rtc), GFP_KERNEL); if (!rtc) return -ENOMEM; - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - rtc->rtc_base = devm_ioremap_resource(&pdev->dev, res); + rtc->rtc_base = devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(rtc->rtc_base)) return PTR_ERR(rtc->rtc_base); diff --git a/drivers/rtc/rtc-lpc32xx.c b/drivers/rtc/rtc-lpc32xx.c index ac393230e592..15d8abda81fe 100644 --- a/drivers/rtc/rtc-lpc32xx.c +++ b/drivers/rtc/rtc-lpc32xx.c @@ -185,7 +185,6 @@ static const struct rtc_class_ops lpc32xx_rtc_ops = { static int lpc32xx_rtc_probe(struct platform_device *pdev) { - struct resource *res; struct lpc32xx_rtc *rtc; int err; u32 tmp; @@ -194,8 +193,7 @@ static int lpc32xx_rtc_probe(struct platform_device *pdev) if (unlikely(!rtc)) return -ENOMEM; - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - rtc->rtc_base = devm_ioremap_resource(&pdev->dev, res); + rtc->rtc_base = devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(rtc->rtc_base)) return PTR_ERR(rtc->rtc_base); @@ -266,16 +264,6 @@ static int lpc32xx_rtc_probe(struct platform_device *pdev) return 0; } -static int lpc32xx_rtc_remove(struct platform_device *pdev) -{ - struct lpc32xx_rtc *rtc = platform_get_drvdata(pdev); - - if (rtc->irq >= 0) - device_init_wakeup(&pdev->dev, 0); - - return 0; -} - #ifdef CONFIG_PM static int lpc32xx_rtc_suspend(struct device *dev) { @@ -357,7 +345,6 @@ MODULE_DEVICE_TABLE(of, lpc32xx_rtc_match); static struct platform_driver lpc32xx_rtc_driver = { .probe = lpc32xx_rtc_probe, - .remove = lpc32xx_rtc_remove, .driver = { .name = "rtc-lpc32xx", .pm = LPC32XX_RTC_PM_OPS, diff --git a/drivers/rtc/rtc-m41t80.c b/drivers/rtc/rtc-m41t80.c index 5f46f85f814b..9b70b371bd0c 100644 --- a/drivers/rtc/rtc-m41t80.c +++ b/drivers/rtc/rtc-m41t80.c @@ -235,9 +235,6 @@ static int m41t80_rtc_set_time(struct device *dev, struct rtc_time *tm) unsigned char buf[8]; int err, flags; - if (tm->tm_year < 100 || tm->tm_year > 199) - return -EINVAL; - buf[M41T80_REG_SSEC] = 0; buf[M41T80_REG_SEC] = bin2bcd(tm->tm_sec); buf[M41T80_REG_MIN] = bin2bcd(tm->tm_min); @@ -705,7 +702,6 @@ static ssize_t wdt_read(struct file *file, char __user *buf, /** * wdt_ioctl: - * @inode: inode of the device * @file: file handle to the device * @cmd: watchdog command * @arg: argument pointer @@ -840,6 +836,7 @@ static const struct file_operations wdt_fops = { .owner = THIS_MODULE, .read = wdt_read, .unlocked_ioctl = wdt_unlocked_ioctl, + .compat_ioctl = compat_ptr_ioctl, .write = wdt_write, .open = wdt_open, .release = wdt_release, @@ -925,6 +922,8 @@ static int m41t80_probe(struct i2c_client *client, } m41t80_data->rtc->ops = &m41t80_rtc_ops; + m41t80_data->rtc->range_min = RTC_TIMESTAMP_BEGIN_2000; + m41t80_data->rtc->range_max = RTC_TIMESTAMP_END_2099; if (client->irq <= 0) { /* We cannot support UIE mode if we do not have an IRQ line */ diff --git a/drivers/rtc/rtc-m48t35.c b/drivers/rtc/rtc-m48t35.c index d3a75d447fce..e8194f1f01a8 100644 --- a/drivers/rtc/rtc-m48t35.c +++ b/drivers/rtc/rtc-m48t35.c @@ -20,6 +20,16 @@ struct m48t35_rtc { u8 pad[0x7ff8]; /* starts at 0x7ff8 */ +#ifdef CONFIG_SGI_IP27 + u8 hour; + u8 min; + u8 sec; + u8 control; + u8 year; + u8 month; + u8 date; + u8 day; +#else u8 control; u8 sec; u8 min; @@ -28,6 +38,7 @@ struct m48t35_rtc { u8 date; u8 month; u8 year; +#endif }; #define M48T35_RTC_SET 0x80 diff --git a/drivers/rtc/rtc-m48t86.c b/drivers/rtc/rtc-m48t86.c index 59b54ed9b841..75a0e73071d8 100644 --- a/drivers/rtc/rtc-m48t86.c +++ b/drivers/rtc/rtc-m48t86.c @@ -218,7 +218,6 @@ static bool m48t86_verify_chip(struct platform_device *pdev) static int m48t86_rtc_probe(struct platform_device *pdev) { struct m48t86_rtc_info *info; - struct resource *res; unsigned char reg; int err; struct nvmem_config m48t86_nvmem_cfg = { @@ -235,17 +234,11 @@ static int m48t86_rtc_probe(struct platform_device *pdev) if (!info) return -ENOMEM; - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - if (!res) - return -ENODEV; - info->index_reg = devm_ioremap_resource(&pdev->dev, res); + info->index_reg = devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(info->index_reg)) return PTR_ERR(info->index_reg); - res = platform_get_resource(pdev, IORESOURCE_MEM, 1); - if (!res) - return -ENODEV; - info->data_reg = devm_ioremap_resource(&pdev->dev, res); + info->data_reg = devm_platform_ioremap_resource(pdev, 1); if (IS_ERR(info->data_reg)) return PTR_ERR(info->data_reg); diff --git a/drivers/rtc/rtc-max77686.c b/drivers/rtc/rtc-max77686.c index 4aff349ae301..d5a0e27dd0a0 100644 --- a/drivers/rtc/rtc-max77686.c +++ b/drivers/rtc/rtc-max77686.c @@ -673,11 +673,8 @@ static int max77686_init_rtc_regmap(struct max77686_rtc_info *info) struct platform_device *pdev = to_platform_device(info->dev); info->rtc_irq = platform_get_irq(pdev, 0); - if (info->rtc_irq < 0) { - dev_err(info->dev, "Failed to get rtc interrupts: %d\n", - info->rtc_irq); + if (info->rtc_irq < 0) return info->rtc_irq; - } } else { info->rtc_irq = parent_i2c->irq; } @@ -693,11 +690,11 @@ static int max77686_init_rtc_regmap(struct max77686_rtc_info *info) goto add_rtc_irq; } - info->rtc = i2c_new_dummy(parent_i2c->adapter, - info->drv_data->rtc_i2c_addr); - if (!info->rtc) { + info->rtc = devm_i2c_new_dummy_device(info->dev, parent_i2c->adapter, + info->drv_data->rtc_i2c_addr); + if (IS_ERR(info->rtc)) { dev_err(info->dev, "Failed to allocate I2C device for RTC\n"); - return -ENODEV; + return PTR_ERR(info->rtc); } info->rtc_regmap = devm_regmap_init_i2c(info->rtc, @@ -705,7 +702,7 @@ static int max77686_init_rtc_regmap(struct max77686_rtc_info *info) if (IS_ERR(info->rtc_regmap)) { ret = PTR_ERR(info->rtc_regmap); dev_err(info->dev, "Failed to allocate RTC regmap: %d\n", ret); - goto err_unregister_i2c; + return ret; } add_rtc_irq: @@ -715,15 +712,10 @@ add_rtc_irq: &info->rtc_irq_data); if (ret < 0) { dev_err(info->dev, "Failed to add RTC irq chip: %d\n", ret); - goto err_unregister_i2c; + return ret; } return 0; - -err_unregister_i2c: - if (info->rtc) - i2c_unregister_device(info->rtc); - return ret; } static int max77686_rtc_probe(struct platform_device *pdev) @@ -786,8 +778,6 @@ static int max77686_rtc_probe(struct platform_device *pdev) err_rtc: regmap_del_irq_chip(info->rtc_irq, info->rtc_irq_data); - if (info->rtc) - i2c_unregister_device(info->rtc); return ret; } @@ -798,8 +788,6 @@ static int max77686_rtc_remove(struct platform_device *pdev) free_irq(info->virq, info); regmap_del_irq_chip(info->rtc_irq, info->rtc_irq_data); - if (info->rtc) - i2c_unregister_device(info->rtc); return 0; } diff --git a/drivers/rtc/rtc-meson-vrtc.c b/drivers/rtc/rtc-meson-vrtc.c new file mode 100644 index 000000000000..89e5ba0dae69 --- /dev/null +++ b/drivers/rtc/rtc-meson-vrtc.c @@ -0,0 +1,155 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2019 BayLibre, SAS + * Author: Neil Armstrong <narmstrong@baylibre.com> + * Copyright (C) 2015 Amlogic, Inc. All rights reserved. + */ +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/rtc.h> +#include <linux/io.h> +#include <linux/of.h> +#include <linux/time64.h> + +struct meson_vrtc_data { + void __iomem *io_alarm; + struct rtc_device *rtc; + unsigned long alarm_time; + bool enabled; +}; + +static int meson_vrtc_read_time(struct device *dev, struct rtc_time *tm) +{ + struct timespec64 time; + + dev_dbg(dev, "%s\n", __func__); + ktime_get_raw_ts64(&time); + rtc_time64_to_tm(time.tv_sec, tm); + + return 0; +} + +static void meson_vrtc_set_wakeup_time(struct meson_vrtc_data *vrtc, + unsigned long time) +{ + writel_relaxed(time, vrtc->io_alarm); +} + +static int meson_vrtc_set_alarm(struct device *dev, struct rtc_wkalrm *alarm) +{ + struct meson_vrtc_data *vrtc = dev_get_drvdata(dev); + + dev_dbg(dev, "%s: alarm->enabled=%d\n", __func__, alarm->enabled); + if (alarm->enabled) + vrtc->alarm_time = rtc_tm_to_time64(&alarm->time); + else + vrtc->alarm_time = 0; + + return 0; +} + +static int meson_vrtc_alarm_irq_enable(struct device *dev, unsigned int enabled) +{ + struct meson_vrtc_data *vrtc = dev_get_drvdata(dev); + + vrtc->enabled = enabled; + return 0; +} + +static const struct rtc_class_ops meson_vrtc_ops = { + .read_time = meson_vrtc_read_time, + .set_alarm = meson_vrtc_set_alarm, + .alarm_irq_enable = meson_vrtc_alarm_irq_enable, +}; + +static int meson_vrtc_probe(struct platform_device *pdev) +{ + struct meson_vrtc_data *vrtc; + int ret; + + vrtc = devm_kzalloc(&pdev->dev, sizeof(*vrtc), GFP_KERNEL); + if (!vrtc) + return -ENOMEM; + + vrtc->io_alarm = devm_platform_ioremap_resource(pdev, 0); + if (IS_ERR(vrtc->io_alarm)) + return PTR_ERR(vrtc->io_alarm); + + device_init_wakeup(&pdev->dev, 1); + + platform_set_drvdata(pdev, vrtc); + + vrtc->rtc = devm_rtc_allocate_device(&pdev->dev); + if (IS_ERR(vrtc->rtc)) + return PTR_ERR(vrtc->rtc); + + vrtc->rtc->ops = &meson_vrtc_ops; + ret = rtc_register_device(vrtc->rtc); + if (ret) + return ret; + + return 0; +} + +static int __maybe_unused meson_vrtc_suspend(struct device *dev) +{ + struct meson_vrtc_data *vrtc = dev_get_drvdata(dev); + + dev_dbg(dev, "%s\n", __func__); + if (vrtc->alarm_time) { + unsigned long local_time; + long alarm_secs; + struct timespec64 time; + + ktime_get_raw_ts64(&time); + local_time = time.tv_sec; + + dev_dbg(dev, "alarm_time = %lus, local_time=%lus\n", + vrtc->alarm_time, local_time); + alarm_secs = vrtc->alarm_time - local_time; + if (alarm_secs > 0) { + meson_vrtc_set_wakeup_time(vrtc, alarm_secs); + dev_dbg(dev, "system will wakeup in %lds.\n", + alarm_secs); + } else { + dev_err(dev, "alarm time already passed: %lds.\n", + alarm_secs); + } + } + + return 0; +} + +static int __maybe_unused meson_vrtc_resume(struct device *dev) +{ + struct meson_vrtc_data *vrtc = dev_get_drvdata(dev); + + dev_dbg(dev, "%s\n", __func__); + + vrtc->alarm_time = 0; + meson_vrtc_set_wakeup_time(vrtc, 0); + return 0; +} + +static SIMPLE_DEV_PM_OPS(meson_vrtc_pm_ops, + meson_vrtc_suspend, meson_vrtc_resume); + +static const struct of_device_id meson_vrtc_dt_match[] = { + { .compatible = "amlogic,meson-vrtc"}, + {}, +}; +MODULE_DEVICE_TABLE(of, meson_vrtc_dt_match); + +static struct platform_driver meson_vrtc_driver = { + .probe = meson_vrtc_probe, + .driver = { + .name = "meson-vrtc", + .of_match_table = meson_vrtc_dt_match, + .pm = &meson_vrtc_pm_ops, + }, +}; + +module_platform_driver(meson_vrtc_driver); + +MODULE_DESCRIPTION("Amlogic Virtual Wakeup RTC Timer driver"); +MODULE_LICENSE("GPL"); diff --git a/drivers/rtc/rtc-meson.c b/drivers/rtc/rtc-meson.c index e08b981dfc21..47ebcf834cc2 100644 --- a/drivers/rtc/rtc-meson.c +++ b/drivers/rtc/rtc-meson.c @@ -131,7 +131,7 @@ static u32 meson_rtc_get_data(struct meson_rtc *rtc) static int meson_rtc_get_bus(struct meson_rtc *rtc) { - int ret, retries = 3; + int ret, retries; u32 val; /* prepare bus for transfers, set all lines low */ @@ -292,7 +292,6 @@ static int meson_rtc_probe(struct platform_device *pdev) }; struct device *dev = &pdev->dev; struct meson_rtc *rtc; - struct resource *res; void __iomem *base; int ret; u32 tm; @@ -312,8 +311,7 @@ static int meson_rtc_probe(struct platform_device *pdev) rtc->rtc->ops = &meson_rtc_ops; rtc->rtc->range_max = U32_MAX; - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - base = devm_ioremap_resource(dev, res); + base = devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(base)) return PTR_ERR(base); diff --git a/drivers/rtc/rtc-moxart.c b/drivers/rtc/rtc-moxart.c index 07b30a373a92..6b24ac9e1cfa 100644 --- a/drivers/rtc/rtc-moxart.c +++ b/drivers/rtc/rtc-moxart.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* * MOXA ART RTC driver. * @@ -7,10 +8,6 @@ * * Based on code from * Moxa Technology Co., Ltd. <www.moxa.com> - * - * This file is licensed under the terms of the GNU General Public - * License version 2. This program is licensed "as is" without any - * warranty of any kind, whether express or implied. */ #include <linux/init.h> diff --git a/drivers/rtc/rtc-msm6242.c b/drivers/rtc/rtc-msm6242.c index 1c2d3c4a4963..80e364baac53 100644 --- a/drivers/rtc/rtc-msm6242.c +++ b/drivers/rtc/rtc-msm6242.c @@ -88,28 +88,16 @@ static inline void msm6242_write(struct msm6242_priv *priv, unsigned int val, __raw_writel(val, &priv->regs[reg]); } -static inline void msm6242_set(struct msm6242_priv *priv, unsigned int val, - unsigned int reg) -{ - msm6242_write(priv, msm6242_read(priv, reg) | val, reg); -} - -static inline void msm6242_clear(struct msm6242_priv *priv, unsigned int val, - unsigned int reg) -{ - msm6242_write(priv, msm6242_read(priv, reg) & ~val, reg); -} - static void msm6242_lock(struct msm6242_priv *priv) { int cnt = 5; - msm6242_set(priv, MSM6242_CD_HOLD, MSM6242_CD); + msm6242_write(priv, MSM6242_CD_HOLD|MSM6242_CD_IRQ_FLAG, MSM6242_CD); while ((msm6242_read(priv, MSM6242_CD) & MSM6242_CD_BUSY) && cnt) { - msm6242_clear(priv, MSM6242_CD_HOLD, MSM6242_CD); + msm6242_write(priv, MSM6242_CD_IRQ_FLAG, MSM6242_CD); udelay(70); - msm6242_set(priv, MSM6242_CD_HOLD, MSM6242_CD); + msm6242_write(priv, MSM6242_CD_HOLD|MSM6242_CD_IRQ_FLAG, MSM6242_CD); cnt--; } @@ -120,7 +108,7 @@ static void msm6242_lock(struct msm6242_priv *priv) static void msm6242_unlock(struct msm6242_priv *priv) { - msm6242_clear(priv, MSM6242_CD_HOLD, MSM6242_CD); + msm6242_write(priv, MSM6242_CD_IRQ_FLAG, MSM6242_CD); } static int msm6242_read_time(struct device *dev, struct rtc_time *tm) @@ -133,7 +121,8 @@ static int msm6242_read_time(struct device *dev, struct rtc_time *tm) msm6242_read(priv, MSM6242_SECOND1); tm->tm_min = msm6242_read(priv, MSM6242_MINUTE10) * 10 + msm6242_read(priv, MSM6242_MINUTE1); - tm->tm_hour = (msm6242_read(priv, MSM6242_HOUR10 & 3)) * 10 + + tm->tm_hour = (msm6242_read(priv, MSM6242_HOUR10) & + MSM6242_HOUR10_HR_MASK) * 10 + msm6242_read(priv, MSM6242_HOUR1); tm->tm_mday = msm6242_read(priv, MSM6242_DAY10) * 10 + msm6242_read(priv, MSM6242_DAY1); diff --git a/drivers/rtc/rtc-mt6397.c b/drivers/rtc/rtc-mt6397.c index b46ed4dc7015..cda238dfe69b 100644 --- a/drivers/rtc/rtc-mt6397.c +++ b/drivers/rtc/rtc-mt6397.c @@ -4,69 +4,19 @@ * Author: Tianping.Fang <tianping.fang@mediatek.com> */ -#include <linux/delay.h> -#include <linux/init.h> +#include <linux/err.h> +#include <linux/interrupt.h> +#include <linux/mfd/mt6397/core.h> #include <linux/module.h> +#include <linux/mutex.h> +#include <linux/platform_device.h> #include <linux/regmap.h> #include <linux/rtc.h> -#include <linux/irqdomain.h> -#include <linux/platform_device.h> -#include <linux/of_address.h> -#include <linux/of_irq.h> -#include <linux/io.h> -#include <linux/mfd/mt6397/core.h> - -#define RTC_BBPU 0x0000 -#define RTC_BBPU_CBUSY BIT(6) - -#define RTC_WRTGR 0x003c - -#define RTC_IRQ_STA 0x0002 -#define RTC_IRQ_STA_AL BIT(0) -#define RTC_IRQ_STA_LP BIT(3) - -#define RTC_IRQ_EN 0x0004 -#define RTC_IRQ_EN_AL BIT(0) -#define RTC_IRQ_EN_ONESHOT BIT(2) -#define RTC_IRQ_EN_LP BIT(3) -#define RTC_IRQ_EN_ONESHOT_AL (RTC_IRQ_EN_ONESHOT | RTC_IRQ_EN_AL) - -#define RTC_AL_MASK 0x0008 -#define RTC_AL_MASK_DOW BIT(4) - -#define RTC_TC_SEC 0x000a -/* Min, Hour, Dom... register offset to RTC_TC_SEC */ -#define RTC_OFFSET_SEC 0 -#define RTC_OFFSET_MIN 1 -#define RTC_OFFSET_HOUR 2 -#define RTC_OFFSET_DOM 3 -#define RTC_OFFSET_DOW 4 -#define RTC_OFFSET_MTH 5 -#define RTC_OFFSET_YEAR 6 -#define RTC_OFFSET_COUNT 7 - -#define RTC_AL_SEC 0x0018 - -#define RTC_PDN2 0x002e -#define RTC_PDN2_PWRON_ALARM BIT(4) - -#define RTC_MIN_YEAR 1968 -#define RTC_BASE_YEAR 1900 -#define RTC_NUM_YEARS 128 -#define RTC_MIN_YEAR_OFFSET (RTC_MIN_YEAR - RTC_BASE_YEAR) - -struct mt6397_rtc { - struct device *dev; - struct rtc_device *rtc_dev; - struct mutex lock; - struct regmap *regmap; - int irq; - u32 addr_base; -}; +#include <linux/mfd/mt6397/rtc.h> +#include <linux/mod_devicetable.h> static int mtk_rtc_write_trigger(struct mt6397_rtc *rtc) { - unsigned long timeout = jiffies + HZ; int ret; u32 data; @@ -74,19 +24,13 @@ static int mtk_rtc_write_trigger(struct mt6397_rtc *rtc) if (ret < 0) return ret; - while (1) { - ret = regmap_read(rtc->regmap, rtc->addr_base + RTC_BBPU, - &data); - if (ret < 0) - break; - if (!(data & RTC_BBPU_CBUSY)) - break; - if (time_after(jiffies, timeout)) { - ret = -ETIMEDOUT; - break; - } - cpu_relax(); - } + ret = regmap_read_poll_timeout(rtc->regmap, + rtc->addr_base + RTC_BBPU, data, + !(data & RTC_BBPU_CBUSY), + MTK_RTC_POLL_DELAY_US, + MTK_RTC_POLL_TIMEOUT); + if (ret < 0) + dev_err(rtc->dev, "failed to write WRTGE: %d\n", ret); return ret; } @@ -103,7 +47,7 @@ static irqreturn_t mtk_rtc_irq_handler_thread(int irq, void *data) irqen = irqsta & ~RTC_IRQ_EN_AL; mutex_lock(&rtc->lock); if (regmap_write(rtc->regmap, rtc->addr_base + RTC_IRQ_EN, - irqen) < 0) + irqen) == 0) mtk_rtc_write_trigger(rtc); mutex_unlock(&rtc->lock); @@ -225,12 +169,12 @@ static int mtk_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alm) alm->pending = !!(pdn2 & RTC_PDN2_PWRON_ALARM); mutex_unlock(&rtc->lock); - tm->tm_sec = data[RTC_OFFSET_SEC]; - tm->tm_min = data[RTC_OFFSET_MIN]; - tm->tm_hour = data[RTC_OFFSET_HOUR]; - tm->tm_mday = data[RTC_OFFSET_DOM]; - tm->tm_mon = data[RTC_OFFSET_MTH]; - tm->tm_year = data[RTC_OFFSET_YEAR]; + tm->tm_sec = data[RTC_OFFSET_SEC] & RTC_AL_SEC_MASK; + tm->tm_min = data[RTC_OFFSET_MIN] & RTC_AL_MIN_MASK; + tm->tm_hour = data[RTC_OFFSET_HOUR] & RTC_AL_HOU_MASK; + tm->tm_mday = data[RTC_OFFSET_DOM] & RTC_AL_DOM_MASK; + tm->tm_mon = data[RTC_OFFSET_MTH] & RTC_AL_MTH_MASK; + tm->tm_year = data[RTC_OFFSET_YEAR] & RTC_AL_YEA_MASK; tm->tm_year += RTC_MIN_YEAR_OFFSET; tm->tm_mon--; @@ -251,14 +195,25 @@ static int mtk_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alm) tm->tm_year -= RTC_MIN_YEAR_OFFSET; tm->tm_mon++; - data[RTC_OFFSET_SEC] = tm->tm_sec; - data[RTC_OFFSET_MIN] = tm->tm_min; - data[RTC_OFFSET_HOUR] = tm->tm_hour; - data[RTC_OFFSET_DOM] = tm->tm_mday; - data[RTC_OFFSET_MTH] = tm->tm_mon; - data[RTC_OFFSET_YEAR] = tm->tm_year; - mutex_lock(&rtc->lock); + ret = regmap_bulk_read(rtc->regmap, rtc->addr_base + RTC_AL_SEC, + data, RTC_OFFSET_COUNT); + if (ret < 0) + goto exit; + + data[RTC_OFFSET_SEC] = ((data[RTC_OFFSET_SEC] & ~(RTC_AL_SEC_MASK)) | + (tm->tm_sec & RTC_AL_SEC_MASK)); + data[RTC_OFFSET_MIN] = ((data[RTC_OFFSET_MIN] & ~(RTC_AL_MIN_MASK)) | + (tm->tm_min & RTC_AL_MIN_MASK)); + data[RTC_OFFSET_HOUR] = ((data[RTC_OFFSET_HOUR] & ~(RTC_AL_HOU_MASK)) | + (tm->tm_hour & RTC_AL_HOU_MASK)); + data[RTC_OFFSET_DOM] = ((data[RTC_OFFSET_DOM] & ~(RTC_AL_DOM_MASK)) | + (tm->tm_mday & RTC_AL_DOM_MASK)); + data[RTC_OFFSET_MTH] = ((data[RTC_OFFSET_MTH] & ~(RTC_AL_MTH_MASK)) | + (tm->tm_mon & RTC_AL_MTH_MASK)); + data[RTC_OFFSET_YEAR] = ((data[RTC_OFFSET_YEAR] & ~(RTC_AL_YEA_MASK)) | + (tm->tm_year & RTC_AL_YEA_MASK)); + if (alm->enabled) { ret = regmap_bulk_write(rtc->regmap, rtc->addr_base + RTC_AL_SEC, @@ -319,19 +274,19 @@ static int mtk_rtc_probe(struct platform_device *pdev) return rtc->irq; rtc->regmap = mt6397_chip->regmap; - rtc->dev = &pdev->dev; mutex_init(&rtc->lock); platform_set_drvdata(pdev, rtc); - rtc->rtc_dev = devm_rtc_allocate_device(rtc->dev); + rtc->rtc_dev = devm_rtc_allocate_device(&pdev->dev); if (IS_ERR(rtc->rtc_dev)) return PTR_ERR(rtc->rtc_dev); - ret = request_threaded_irq(rtc->irq, NULL, - mtk_rtc_irq_handler_thread, - IRQF_ONESHOT | IRQF_TRIGGER_HIGH, - "mt6397-rtc", rtc); + ret = devm_request_threaded_irq(&pdev->dev, rtc->irq, NULL, + mtk_rtc_irq_handler_thread, + IRQF_ONESHOT | IRQF_TRIGGER_HIGH, + "mt6397-rtc", rtc); + if (ret) { dev_err(&pdev->dev, "Failed to request alarm IRQ: %d: %d\n", rtc->irq, ret); @@ -342,26 +297,7 @@ static int mtk_rtc_probe(struct platform_device *pdev) rtc->rtc_dev->ops = &mtk_rtc_ops; - ret = rtc_register_device(rtc->rtc_dev); - if (ret) { - dev_err(&pdev->dev, "register rtc device failed\n"); - goto out_free_irq; - } - - return 0; - -out_free_irq: - free_irq(rtc->irq, rtc); - return ret; -} - -static int mtk_rtc_remove(struct platform_device *pdev) -{ - struct mt6397_rtc *rtc = platform_get_drvdata(pdev); - - free_irq(rtc->irq, rtc); - - return 0; + return rtc_register_device(rtc->rtc_dev); } #ifdef CONFIG_PM_SLEEP @@ -390,6 +326,7 @@ static SIMPLE_DEV_PM_OPS(mt6397_pm_ops, mt6397_rtc_suspend, mt6397_rtc_resume); static const struct of_device_id mt6397_rtc_of_match[] = { + { .compatible = "mediatek,mt6323-rtc", }, { .compatible = "mediatek,mt6397-rtc", }, { } }; @@ -402,7 +339,6 @@ static struct platform_driver mtk_rtc_driver = { .pm = &mt6397_pm_ops, }, .probe = mtk_rtc_probe, - .remove = mtk_rtc_remove, }; module_platform_driver(mtk_rtc_driver); diff --git a/drivers/rtc/rtc-mt7622.c b/drivers/rtc/rtc-mt7622.c index 82b0816ec6c1..f1e356394814 100644 --- a/drivers/rtc/rtc-mt7622.c +++ b/drivers/rtc/rtc-mt7622.c @@ -303,7 +303,6 @@ MODULE_DEVICE_TABLE(of, mtk_rtc_match); static int mtk_rtc_probe(struct platform_device *pdev) { struct mtk_rtc *hw; - struct resource *res; int ret; hw = devm_kzalloc(&pdev->dev, sizeof(*hw), GFP_KERNEL); @@ -312,8 +311,7 @@ static int mtk_rtc_probe(struct platform_device *pdev) platform_set_drvdata(pdev, hw); - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - hw->base = devm_ioremap_resource(&pdev->dev, res); + hw->base = devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(hw->base)) return PTR_ERR(hw->base); @@ -329,7 +327,6 @@ static int mtk_rtc_probe(struct platform_device *pdev) hw->irq = platform_get_irq(pdev, 0); if (hw->irq < 0) { - dev_err(&pdev->dev, "No IRQ resource\n"); ret = hw->irq; goto err; } diff --git a/drivers/rtc/rtc-mv.c b/drivers/rtc/rtc-mv.c index ab9db57a6834..d5f190e578e4 100644 --- a/drivers/rtc/rtc-mv.c +++ b/drivers/rtc/rtc-mv.c @@ -212,7 +212,6 @@ static const struct rtc_class_ops mv_rtc_alarm_ops = { static int __init mv_rtc_probe(struct platform_device *pdev) { - struct resource *res; struct rtc_plat_data *pdata; u32 rtc_time; int ret = 0; @@ -221,8 +220,7 @@ static int __init mv_rtc_probe(struct platform_device *pdev) if (!pdata) return -ENOMEM; - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - pdata->ioaddr = devm_ioremap_resource(&pdev->dev, res); + pdata->ioaddr = devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(pdata->ioaddr)) return PTR_ERR(pdata->ioaddr); diff --git a/drivers/rtc/rtc-mxc.c b/drivers/rtc/rtc-mxc.c index e697e96612bb..902d57dcd0d4 100644 --- a/drivers/rtc/rtc-mxc.c +++ b/drivers/rtc/rtc-mxc.c @@ -184,8 +184,9 @@ static void mxc_rtc_irq_enable(struct device *dev, unsigned int bit, struct rtc_plat_data *pdata = dev_get_drvdata(dev); void __iomem *ioaddr = pdata->ioaddr; u32 reg; + unsigned long flags; - spin_lock_irq(&pdata->rtc->irq_lock); + spin_lock_irqsave(&pdata->rtc->irq_lock, flags); reg = readw(ioaddr + RTC_RTCIENR); if (enabled) @@ -194,7 +195,7 @@ static void mxc_rtc_irq_enable(struct device *dev, unsigned int bit, reg &= ~bit; writew(reg, ioaddr + RTC_RTCIENR); - spin_unlock_irq(&pdata->rtc->irq_lock); + spin_unlock_irqrestore(&pdata->rtc->irq_lock, flags); } /* This function is the RTC interrupt service routine. */ diff --git a/drivers/rtc/rtc-mxc_v2.c b/drivers/rtc/rtc-mxc_v2.c index 5b970a816631..91534560fe2a 100644 --- a/drivers/rtc/rtc-mxc_v2.c +++ b/drivers/rtc/rtc-mxc_v2.c @@ -279,7 +279,6 @@ static int mxc_rtc_wait_for_flag(void __iomem *ioaddr, int flag) static int mxc_rtc_probe(struct platform_device *pdev) { struct mxc_rtc_data *pdata; - struct resource *res; void __iomem *ioaddr; int ret = 0; @@ -287,8 +286,7 @@ static int mxc_rtc_probe(struct platform_device *pdev) if (!pdata) return -ENOMEM; - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - pdata->ioaddr = devm_ioremap_resource(&pdev->dev, res); + pdata->ioaddr = devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(pdata->ioaddr)) return PTR_ERR(pdata->ioaddr); diff --git a/drivers/rtc/rtc-nuc900.c b/drivers/rtc/rtc-nuc900.c deleted file mode 100644 index 49cc4058614d..000000000000 --- a/drivers/rtc/rtc-nuc900.c +++ /dev/null @@ -1,271 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * Copyright (c) 2008-2009 Nuvoton technology corporation. - * - * Wan ZongShun <mcuos.com@gmail.com> - */ - -#include <linux/module.h> -#include <linux/init.h> -#include <linux/platform_device.h> -#include <linux/slab.h> -#include <linux/rtc.h> -#include <linux/delay.h> -#include <linux/io.h> -#include <linux/bcd.h> - -/* RTC Control Registers */ -#define REG_RTC_INIR 0x00 -#define REG_RTC_AER 0x04 -#define REG_RTC_FCR 0x08 -#define REG_RTC_TLR 0x0C -#define REG_RTC_CLR 0x10 -#define REG_RTC_TSSR 0x14 -#define REG_RTC_DWR 0x18 -#define REG_RTC_TAR 0x1C -#define REG_RTC_CAR 0x20 -#define REG_RTC_LIR 0x24 -#define REG_RTC_RIER 0x28 -#define REG_RTC_RIIR 0x2C -#define REG_RTC_TTR 0x30 - -#define RTCSET 0x01 -#define AERRWENB 0x10000 -#define INIRRESET 0xa5eb1357 -#define AERPOWERON 0xA965 -#define AERPOWEROFF 0x0000 -#define LEAPYEAR 0x0001 -#define TICKENB 0x80 -#define TICKINTENB 0x0002 -#define ALARMINTENB 0x0001 -#define MODE24 0x0001 - -struct nuc900_rtc { - int irq_num; - void __iomem *rtc_reg; - struct rtc_device *rtcdev; -}; - -struct nuc900_bcd_time { - int bcd_sec; - int bcd_min; - int bcd_hour; - int bcd_mday; - int bcd_mon; - int bcd_year; -}; - -static irqreturn_t nuc900_rtc_interrupt(int irq, void *_rtc) -{ - struct nuc900_rtc *rtc = _rtc; - unsigned long events = 0, rtc_irq; - - rtc_irq = __raw_readl(rtc->rtc_reg + REG_RTC_RIIR); - - if (rtc_irq & ALARMINTENB) { - rtc_irq &= ~ALARMINTENB; - __raw_writel(rtc_irq, rtc->rtc_reg + REG_RTC_RIIR); - events |= RTC_AF | RTC_IRQF; - } - - if (rtc_irq & TICKINTENB) { - rtc_irq &= ~TICKINTENB; - __raw_writel(rtc_irq, rtc->rtc_reg + REG_RTC_RIIR); - events |= RTC_UF | RTC_IRQF; - } - - rtc_update_irq(rtc->rtcdev, 1, events); - - return IRQ_HANDLED; -} - -static int *check_rtc_access_enable(struct nuc900_rtc *nuc900_rtc) -{ - unsigned int timeout = 0x1000; - __raw_writel(INIRRESET, nuc900_rtc->rtc_reg + REG_RTC_INIR); - - mdelay(10); - - __raw_writel(AERPOWERON, nuc900_rtc->rtc_reg + REG_RTC_AER); - - while (!(__raw_readl(nuc900_rtc->rtc_reg + REG_RTC_AER) & AERRWENB) - && --timeout) - mdelay(1); - - if (!timeout) - return ERR_PTR(-EPERM); - - return NULL; -} - -static void nuc900_rtc_bcd2bin(unsigned int timereg, - unsigned int calreg, struct rtc_time *tm) -{ - tm->tm_mday = bcd2bin(calreg >> 0); - tm->tm_mon = bcd2bin(calreg >> 8); - tm->tm_year = bcd2bin(calreg >> 16) + 100; - - tm->tm_sec = bcd2bin(timereg >> 0); - tm->tm_min = bcd2bin(timereg >> 8); - tm->tm_hour = bcd2bin(timereg >> 16); -} - -static void nuc900_rtc_bin2bcd(struct device *dev, struct rtc_time *settm, - struct nuc900_bcd_time *gettm) -{ - gettm->bcd_mday = bin2bcd(settm->tm_mday) << 0; - gettm->bcd_mon = bin2bcd(settm->tm_mon) << 8; - - if (settm->tm_year < 100) { - dev_warn(dev, "The year will be between 1970-1999, right?\n"); - gettm->bcd_year = bin2bcd(settm->tm_year) << 16; - } else { - gettm->bcd_year = bin2bcd(settm->tm_year - 100) << 16; - } - - gettm->bcd_sec = bin2bcd(settm->tm_sec) << 0; - gettm->bcd_min = bin2bcd(settm->tm_min) << 8; - gettm->bcd_hour = bin2bcd(settm->tm_hour) << 16; -} - -static int nuc900_alarm_irq_enable(struct device *dev, unsigned int enabled) -{ - struct nuc900_rtc *rtc = dev_get_drvdata(dev); - - if (enabled) - __raw_writel(__raw_readl(rtc->rtc_reg + REG_RTC_RIER)| - (ALARMINTENB), rtc->rtc_reg + REG_RTC_RIER); - else - __raw_writel(__raw_readl(rtc->rtc_reg + REG_RTC_RIER)& - (~ALARMINTENB), rtc->rtc_reg + REG_RTC_RIER); - - return 0; -} - -static int nuc900_rtc_read_time(struct device *dev, struct rtc_time *tm) -{ - struct nuc900_rtc *rtc = dev_get_drvdata(dev); - unsigned int timeval, clrval; - - timeval = __raw_readl(rtc->rtc_reg + REG_RTC_TLR); - clrval = __raw_readl(rtc->rtc_reg + REG_RTC_CLR); - - nuc900_rtc_bcd2bin(timeval, clrval, tm); - - return 0; -} - -static int nuc900_rtc_set_time(struct device *dev, struct rtc_time *tm) -{ - struct nuc900_rtc *rtc = dev_get_drvdata(dev); - struct nuc900_bcd_time gettm; - unsigned long val; - int *err; - - nuc900_rtc_bin2bcd(dev, tm, &gettm); - - err = check_rtc_access_enable(rtc); - if (IS_ERR(err)) - return PTR_ERR(err); - - val = gettm.bcd_mday | gettm.bcd_mon | gettm.bcd_year; - __raw_writel(val, rtc->rtc_reg + REG_RTC_CLR); - - val = gettm.bcd_sec | gettm.bcd_min | gettm.bcd_hour; - __raw_writel(val, rtc->rtc_reg + REG_RTC_TLR); - - return 0; -} - -static int nuc900_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm) -{ - struct nuc900_rtc *rtc = dev_get_drvdata(dev); - unsigned int timeval, carval; - - timeval = __raw_readl(rtc->rtc_reg + REG_RTC_TAR); - carval = __raw_readl(rtc->rtc_reg + REG_RTC_CAR); - - nuc900_rtc_bcd2bin(timeval, carval, &alrm->time); - - return rtc_valid_tm(&alrm->time); -} - -static int nuc900_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm) -{ - struct nuc900_rtc *rtc = dev_get_drvdata(dev); - struct nuc900_bcd_time tm; - unsigned long val; - int *err; - - nuc900_rtc_bin2bcd(dev, &alrm->time, &tm); - - err = check_rtc_access_enable(rtc); - if (IS_ERR(err)) - return PTR_ERR(err); - - val = tm.bcd_mday | tm.bcd_mon | tm.bcd_year; - __raw_writel(val, rtc->rtc_reg + REG_RTC_CAR); - - val = tm.bcd_sec | tm.bcd_min | tm.bcd_hour; - __raw_writel(val, rtc->rtc_reg + REG_RTC_TAR); - - return 0; -} - -static const struct rtc_class_ops nuc900_rtc_ops = { - .read_time = nuc900_rtc_read_time, - .set_time = nuc900_rtc_set_time, - .read_alarm = nuc900_rtc_read_alarm, - .set_alarm = nuc900_rtc_set_alarm, - .alarm_irq_enable = nuc900_alarm_irq_enable, -}; - -static int __init nuc900_rtc_probe(struct platform_device *pdev) -{ - struct resource *res; - struct nuc900_rtc *nuc900_rtc; - - nuc900_rtc = devm_kzalloc(&pdev->dev, sizeof(struct nuc900_rtc), - GFP_KERNEL); - if (!nuc900_rtc) - return -ENOMEM; - - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - nuc900_rtc->rtc_reg = devm_ioremap_resource(&pdev->dev, res); - if (IS_ERR(nuc900_rtc->rtc_reg)) - return PTR_ERR(nuc900_rtc->rtc_reg); - - platform_set_drvdata(pdev, nuc900_rtc); - - nuc900_rtc->rtcdev = devm_rtc_device_register(&pdev->dev, pdev->name, - &nuc900_rtc_ops, THIS_MODULE); - if (IS_ERR(nuc900_rtc->rtcdev)) { - dev_err(&pdev->dev, "rtc device register failed\n"); - return PTR_ERR(nuc900_rtc->rtcdev); - } - - __raw_writel(__raw_readl(nuc900_rtc->rtc_reg + REG_RTC_TSSR) | MODE24, - nuc900_rtc->rtc_reg + REG_RTC_TSSR); - - nuc900_rtc->irq_num = platform_get_irq(pdev, 0); - if (devm_request_irq(&pdev->dev, nuc900_rtc->irq_num, - nuc900_rtc_interrupt, 0, "nuc900rtc", nuc900_rtc)) { - dev_err(&pdev->dev, "NUC900 RTC request irq failed\n"); - return -EBUSY; - } - - return 0; -} - -static struct platform_driver nuc900_rtc_driver = { - .driver = { - .name = "nuc900-rtc", - }, -}; - -module_platform_driver_probe(nuc900_rtc_driver, nuc900_rtc_probe); - -MODULE_AUTHOR("Wan ZongShun <mcuos.com@gmail.com>"); -MODULE_DESCRIPTION("nuc910/nuc920 RTC driver"); -MODULE_LICENSE("GPL"); -MODULE_ALIAS("platform:nuc900-rtc"); diff --git a/drivers/rtc/rtc-omap.c b/drivers/rtc/rtc-omap.c index a2941c875a06..d4ed20fb3194 100644 --- a/drivers/rtc/rtc-omap.c +++ b/drivers/rtc/rtc-omap.c @@ -616,7 +616,7 @@ static int rtc_pinconf_get(struct pinctrl_dev *pctldev, break; default: return -ENOTSUPP; - }; + } *config = pinconf_to_config_packed(param, arg); @@ -727,7 +727,6 @@ static struct nvmem_config omap_rtc_nvmem_config = { static int omap_rtc_probe(struct platform_device *pdev) { struct omap_rtc *rtc; - struct resource *res; u8 reg, mask, new_ctrl; const struct platform_device_id *id_entry; const struct of_device_id *of_id; @@ -764,8 +763,7 @@ static int omap_rtc_probe(struct platform_device *pdev) if (!IS_ERR(rtc->clk)) clk_prepare_enable(rtc->clk); - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - rtc->base = devm_ioremap_resource(&pdev->dev, res); + rtc->base = devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(rtc->base)) { clk_disable_unprepare(rtc->clk); return PTR_ERR(rtc->base); diff --git a/drivers/rtc/rtc-pcf2123.c b/drivers/rtc/rtc-pcf2123.c index fb542a930bf0..c3691fa4210e 100644 --- a/drivers/rtc/rtc-pcf2123.c +++ b/drivers/rtc/rtc-pcf2123.c @@ -82,7 +82,7 @@ #define OSC_HAS_STOPPED BIT(7) /* Clock has been stopped */ /* PCF2123_REG_ALRM_XX BITS */ -#define ALRM_ENABLE BIT(7) /* MN, HR, DM, or DW alarm enable */ +#define ALRM_DISABLE BIT(7) /* MN, HR, DM, or DW alarm matching */ /* PCF2123_REG_TMR_CLKOUT BITS */ #define CD_TMR_4096KHZ (0) /* 4096 KHz countdown timer */ @@ -104,7 +104,7 @@ static struct spi_driver pcf2123_driver; -struct pcf2123_plat_data { +struct pcf2123_data { struct rtc_device *rtc; struct regmap *map; }; @@ -119,11 +119,11 @@ static const struct regmap_config pcf2123_regmap_config = { static int pcf2123_read_offset(struct device *dev, long *offset) { - struct pcf2123_plat_data *pdata = dev_get_platdata(dev); + struct pcf2123_data *pcf2123 = dev_get_drvdata(dev); int ret, val; unsigned int reg; - ret = regmap_read(pdata->map, PCF2123_REG_OFFSET, ®); + ret = regmap_read(pcf2123->map, PCF2123_REG_OFFSET, ®); if (ret) return ret; @@ -149,7 +149,7 @@ static int pcf2123_read_offset(struct device *dev, long *offset) */ static int pcf2123_set_offset(struct device *dev, long offset) { - struct pcf2123_plat_data *pdata = dev_get_platdata(dev); + struct pcf2123_data *pcf2123 = dev_get_drvdata(dev); s8 reg; if (offset > OFFSET_STEP * 127) @@ -169,16 +169,16 @@ static int pcf2123_set_offset(struct device *dev, long offset) reg |= OFFSET_COARSE; } - return regmap_write(pdata->map, PCF2123_REG_OFFSET, (unsigned int)reg); + return regmap_write(pcf2123->map, PCF2123_REG_OFFSET, (unsigned int)reg); } static int pcf2123_rtc_read_time(struct device *dev, struct rtc_time *tm) { - struct pcf2123_plat_data *pdata = dev_get_platdata(dev); + struct pcf2123_data *pcf2123 = dev_get_drvdata(dev); u8 rxbuf[7]; int ret; - ret = regmap_bulk_read(pdata->map, PCF2123_REG_SC, rxbuf, + ret = regmap_bulk_read(pcf2123->map, PCF2123_REG_SC, rxbuf, sizeof(rxbuf)); if (ret) return ret; @@ -194,9 +194,7 @@ static int pcf2123_rtc_read_time(struct device *dev, struct rtc_time *tm) tm->tm_mday = bcd2bin(rxbuf[3] & 0x3F); tm->tm_wday = rxbuf[4] & 0x07; tm->tm_mon = bcd2bin(rxbuf[5] & 0x1F) - 1; /* rtc mn 1-12 */ - tm->tm_year = bcd2bin(rxbuf[6]); - if (tm->tm_year < 70) - tm->tm_year += 100; /* assume we are in 1970...2069 */ + tm->tm_year = bcd2bin(rxbuf[6]) + 100; dev_dbg(dev, "%s: tm is %ptR\n", __func__, tm); @@ -205,14 +203,14 @@ static int pcf2123_rtc_read_time(struct device *dev, struct rtc_time *tm) static int pcf2123_rtc_set_time(struct device *dev, struct rtc_time *tm) { - struct pcf2123_plat_data *pdata = dev_get_platdata(dev); + struct pcf2123_data *pcf2123 = dev_get_drvdata(dev); u8 txbuf[7]; int ret; dev_dbg(dev, "%s: tm is %ptR\n", __func__, tm); /* Stop the counter first */ - ret = regmap_write(pdata->map, PCF2123_REG_CTRL1, CTRL1_STOP); + ret = regmap_write(pcf2123->map, PCF2123_REG_CTRL1, CTRL1_STOP); if (ret) return ret; @@ -223,29 +221,37 @@ static int pcf2123_rtc_set_time(struct device *dev, struct rtc_time *tm) txbuf[3] = bin2bcd(tm->tm_mday & 0x3F); txbuf[4] = tm->tm_wday & 0x07; txbuf[5] = bin2bcd((tm->tm_mon + 1) & 0x1F); /* rtc mn 1-12 */ - txbuf[6] = bin2bcd(tm->tm_year < 100 ? tm->tm_year : tm->tm_year - 100); + txbuf[6] = bin2bcd(tm->tm_year - 100); - ret = regmap_bulk_write(pdata->map, PCF2123_REG_SC, txbuf, + ret = regmap_bulk_write(pcf2123->map, PCF2123_REG_SC, txbuf, sizeof(txbuf)); if (ret) return ret; /* Start the counter */ - ret = regmap_write(pdata->map, PCF2123_REG_CTRL1, CTRL1_CLEAR); + ret = regmap_write(pcf2123->map, PCF2123_REG_CTRL1, CTRL1_CLEAR); if (ret) return ret; return 0; } +static int pcf2123_rtc_alarm_irq_enable(struct device *dev, unsigned int en) +{ + struct pcf2123_data *pcf2123 = dev_get_drvdata(dev); + + return regmap_update_bits(pcf2123->map, PCF2123_REG_CTRL2, CTRL2_AIE, + en ? CTRL2_AIE : 0); +} + static int pcf2123_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alm) { - struct pcf2123_plat_data *pdata = dev_get_platdata(dev); + struct pcf2123_data *pcf2123 = dev_get_drvdata(dev); u8 rxbuf[4]; int ret; unsigned int val = 0; - ret = regmap_bulk_read(pdata->map, PCF2123_REG_ALRM_MN, rxbuf, + ret = regmap_bulk_read(pcf2123->map, PCF2123_REG_ALRM_MN, rxbuf, sizeof(rxbuf)); if (ret) return ret; @@ -257,7 +263,7 @@ static int pcf2123_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alm) dev_dbg(dev, "%s: alm is %ptR\n", __func__, &alm->time); - ret = regmap_read(pdata->map, PCF2123_REG_CTRL2, &val); + ret = regmap_read(pcf2123->map, PCF2123_REG_CTRL2, &val); if (ret) return ret; @@ -268,19 +274,19 @@ static int pcf2123_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alm) static int pcf2123_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alm) { - struct pcf2123_plat_data *pdata = dev_get_platdata(dev); + struct pcf2123_data *pcf2123 = dev_get_drvdata(dev); u8 txbuf[4]; int ret; dev_dbg(dev, "%s: alm is %ptR\n", __func__, &alm->time); - /* Ensure alarm flag is clear */ - ret = regmap_update_bits(pdata->map, PCF2123_REG_CTRL2, CTRL2_AF, 0); + /* Disable alarm interrupt */ + ret = regmap_update_bits(pcf2123->map, PCF2123_REG_CTRL2, CTRL2_AIE, 0); if (ret) return ret; - /* Disable alarm interrupt */ - ret = regmap_update_bits(pdata->map, PCF2123_REG_CTRL2, CTRL2_AIE, 0); + /* Ensure alarm flag is clear */ + ret = regmap_update_bits(pcf2123->map, PCF2123_REG_CTRL2, CTRL2_AF, 0); if (ret) return ret; @@ -288,42 +294,34 @@ static int pcf2123_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alm) txbuf[0] = bin2bcd(alm->time.tm_min & 0x7F); txbuf[1] = bin2bcd(alm->time.tm_hour & 0x3F); txbuf[2] = bin2bcd(alm->time.tm_mday & 0x3F); - txbuf[3] = bin2bcd(alm->time.tm_wday & 0x07); + txbuf[3] = ALRM_DISABLE; - ret = regmap_bulk_write(pdata->map, PCF2123_REG_ALRM_MN, txbuf, + ret = regmap_bulk_write(pcf2123->map, PCF2123_REG_ALRM_MN, txbuf, sizeof(txbuf)); if (ret) return ret; - /* Enable alarm interrupt */ - if (alm->enabled) { - ret = regmap_update_bits(pdata->map, PCF2123_REG_CTRL2, - CTRL2_AIE, CTRL2_AIE); - if (ret) - return ret; - } - - return 0; + return pcf2123_rtc_alarm_irq_enable(dev, alm->enabled); } static irqreturn_t pcf2123_rtc_irq(int irq, void *dev) { - struct pcf2123_plat_data *pdata = dev_get_platdata(dev); - struct mutex *lock = &pdata->rtc->ops_lock; + struct pcf2123_data *pcf2123 = dev_get_drvdata(dev); + struct mutex *lock = &pcf2123->rtc->ops_lock; unsigned int val = 0; int ret = IRQ_NONE; mutex_lock(lock); - regmap_read(pdata->map, PCF2123_REG_CTRL2, &val); + regmap_read(pcf2123->map, PCF2123_REG_CTRL2, &val); /* Alarm? */ if (val & CTRL2_AF) { ret = IRQ_HANDLED; /* Clear alarm flag */ - regmap_update_bits(pdata->map, PCF2123_REG_CTRL2, CTRL2_AF, 0); + regmap_update_bits(pcf2123->map, PCF2123_REG_CTRL2, CTRL2_AF, 0); - rtc_update_irq(pdata->rtc, 1, RTC_IRQF | RTC_AF); + rtc_update_irq(pcf2123->rtc, 1, RTC_IRQF | RTC_AF); } mutex_unlock(lock); @@ -333,23 +331,23 @@ static irqreturn_t pcf2123_rtc_irq(int irq, void *dev) static int pcf2123_reset(struct device *dev) { - struct pcf2123_plat_data *pdata = dev_get_platdata(dev); + struct pcf2123_data *pcf2123 = dev_get_drvdata(dev); int ret; unsigned int val = 0; - ret = regmap_write(pdata->map, PCF2123_REG_CTRL1, CTRL1_SW_RESET); + ret = regmap_write(pcf2123->map, PCF2123_REG_CTRL1, CTRL1_SW_RESET); if (ret) return ret; /* Stop the counter */ dev_dbg(dev, "stopping RTC\n"); - ret = regmap_write(pdata->map, PCF2123_REG_CTRL1, CTRL1_STOP); + ret = regmap_write(pcf2123->map, PCF2123_REG_CTRL1, CTRL1_STOP); if (ret) return ret; /* See if the counter was actually stopped */ dev_dbg(dev, "checking for presence of RTC\n"); - ret = regmap_read(pdata->map, PCF2123_REG_CTRL1, &val); + ret = regmap_read(pcf2123->map, PCF2123_REG_CTRL1, &val); if (ret) return ret; @@ -358,7 +356,7 @@ static int pcf2123_reset(struct device *dev) return -ENODEV; /* Start the counter */ - ret = regmap_write(pdata->map, PCF2123_REG_CTRL1, CTRL1_CLEAR); + ret = regmap_write(pcf2123->map, PCF2123_REG_CTRL1, CTRL1_CLEAR); if (ret) return ret; @@ -372,26 +370,27 @@ static const struct rtc_class_ops pcf2123_rtc_ops = { .set_offset = pcf2123_set_offset, .read_alarm = pcf2123_rtc_read_alarm, .set_alarm = pcf2123_rtc_set_alarm, + .alarm_irq_enable = pcf2123_rtc_alarm_irq_enable, }; static int pcf2123_probe(struct spi_device *spi) { struct rtc_device *rtc; struct rtc_time tm; - struct pcf2123_plat_data *pdata; + struct pcf2123_data *pcf2123; int ret = 0; - pdata = devm_kzalloc(&spi->dev, sizeof(struct pcf2123_plat_data), + pcf2123 = devm_kzalloc(&spi->dev, sizeof(struct pcf2123_data), GFP_KERNEL); - if (!pdata) + if (!pcf2123) return -ENOMEM; - spi->dev.platform_data = pdata; - pdata->map = devm_regmap_init_spi(spi, &pcf2123_regmap_config); + dev_set_drvdata(&spi->dev, pcf2123); - if (IS_ERR(pdata->map)) { + pcf2123->map = devm_regmap_init_spi(spi, &pcf2123_regmap_config); + if (IS_ERR(pcf2123->map)) { dev_err(&spi->dev, "regmap init failed.\n"); - goto kfree_exit; + return PTR_ERR(pcf2123->map); } ret = pcf2123_rtc_read_time(&spi->dev, &tm); @@ -399,7 +398,7 @@ static int pcf2123_probe(struct spi_device *spi) ret = pcf2123_reset(&spi->dev); if (ret < 0) { dev_err(&spi->dev, "chip not found\n"); - goto kfree_exit; + return ret; } } @@ -407,16 +406,11 @@ static int pcf2123_probe(struct spi_device *spi) (spi->max_speed_hz + 500) / 1000); /* Finalize the initialization */ - rtc = devm_rtc_device_register(&spi->dev, pcf2123_driver.driver.name, - &pcf2123_rtc_ops, THIS_MODULE); - - if (IS_ERR(rtc)) { - dev_err(&spi->dev, "failed to register.\n"); - ret = PTR_ERR(rtc); - goto kfree_exit; - } + rtc = devm_rtc_allocate_device(&spi->dev); + if (IS_ERR(rtc)) + return PTR_ERR(rtc); - pdata->rtc = rtc; + pcf2123->rtc = rtc; /* Register alarm irq */ if (spi->irq > 0) { @@ -434,19 +428,25 @@ static int pcf2123_probe(struct spi_device *spi) * support to this driver to generate interrupts more than once * per minute. */ - pdata->rtc->uie_unsupported = 1; + rtc->uie_unsupported = 1; + rtc->ops = &pcf2123_rtc_ops; + rtc->range_min = RTC_TIMESTAMP_BEGIN_2000; + rtc->range_max = RTC_TIMESTAMP_END_2099; + rtc->set_start_time = true; - return 0; + ret = rtc_register_device(rtc); + if (ret) + return ret; -kfree_exit: - spi->dev.platform_data = NULL; - return ret; + return 0; } #ifdef CONFIG_OF static const struct of_device_id pcf2123_dt_ids[] = { - { .compatible = "nxp,rtc-pcf2123", }, + { .compatible = "nxp,pcf2123", }, { .compatible = "microcrystal,rv2123", }, + /* Deprecated, do not use */ + { .compatible = "nxp,rtc-pcf2123", }, { /* sentinel */ } }; MODULE_DEVICE_TABLE(of, pcf2123_dt_ids); diff --git a/drivers/rtc/rtc-pcf2127.c b/drivers/rtc/rtc-pcf2127.c index 8632f58fed43..4e50d6768f13 100644 --- a/drivers/rtc/rtc-pcf2127.c +++ b/drivers/rtc/rtc-pcf2127.c @@ -5,6 +5,9 @@ * * Author: Renaud Cerrato <r.cerrato@til-technologies.fr> * + * Watchdog and tamper functions + * Author: Bruno Thomsen <bruno.thomsen@gmail.com> + * * based on the other drivers in this same directory. * * Datasheet: http://cache.nxp.com/documents/data_sheet/PCF2127.pdf @@ -18,30 +21,67 @@ #include <linux/module.h> #include <linux/of.h> #include <linux/regmap.h> +#include <linux/watchdog.h> + +/* Control register 1 */ +#define PCF2127_REG_CTRL1 0x00 +#define PCF2127_BIT_CTRL1_TSF1 BIT(4) +/* Control register 2 */ +#define PCF2127_REG_CTRL2 0x01 +#define PCF2127_BIT_CTRL2_TSIE BIT(2) +#define PCF2127_BIT_CTRL2_TSF2 BIT(5) +/* Control register 3 */ +#define PCF2127_REG_CTRL3 0x02 +#define PCF2127_BIT_CTRL3_BLIE BIT(0) +#define PCF2127_BIT_CTRL3_BIE BIT(1) +#define PCF2127_BIT_CTRL3_BLF BIT(2) +#define PCF2127_BIT_CTRL3_BF BIT(3) +#define PCF2127_BIT_CTRL3_BTSE BIT(4) +/* Time and date registers */ +#define PCF2127_REG_SC 0x03 +#define PCF2127_BIT_SC_OSF BIT(7) +#define PCF2127_REG_MN 0x04 +#define PCF2127_REG_HR 0x05 +#define PCF2127_REG_DM 0x06 +#define PCF2127_REG_DW 0x07 +#define PCF2127_REG_MO 0x08 +#define PCF2127_REG_YR 0x09 +/* Watchdog registers */ +#define PCF2127_REG_WD_CTL 0x10 +#define PCF2127_BIT_WD_CTL_TF0 BIT(0) +#define PCF2127_BIT_WD_CTL_TF1 BIT(1) +#define PCF2127_BIT_WD_CTL_CD0 BIT(6) +#define PCF2127_BIT_WD_CTL_CD1 BIT(7) +#define PCF2127_REG_WD_VAL 0x11 +/* Tamper timestamp registers */ +#define PCF2127_REG_TS_CTRL 0x12 +#define PCF2127_BIT_TS_CTRL_TSOFF BIT(6) +#define PCF2127_BIT_TS_CTRL_TSM BIT(7) +#define PCF2127_REG_TS_SC 0x13 +#define PCF2127_REG_TS_MN 0x14 +#define PCF2127_REG_TS_HR 0x15 +#define PCF2127_REG_TS_DM 0x16 +#define PCF2127_REG_TS_MO 0x17 +#define PCF2127_REG_TS_YR 0x18 +/* + * RAM registers + * PCF2127 has 512 bytes general-purpose static RAM (SRAM) that is + * battery backed and can survive a power outage. + * PCF2129 doesn't have this feature. + */ +#define PCF2127_REG_RAM_ADDR_MSB 0x1A +#define PCF2127_REG_RAM_WRT_CMD 0x1C +#define PCF2127_REG_RAM_RD_CMD 0x1D -#define PCF2127_REG_CTRL1 (0x00) /* Control Register 1 */ -#define PCF2127_REG_CTRL2 (0x01) /* Control Register 2 */ - -#define PCF2127_REG_CTRL3 (0x02) /* Control Register 3 */ -#define PCF2127_REG_CTRL3_BLF BIT(2) - -#define PCF2127_REG_SC (0x03) /* datetime */ -#define PCF2127_REG_MN (0x04) -#define PCF2127_REG_HR (0x05) -#define PCF2127_REG_DM (0x06) -#define PCF2127_REG_DW (0x07) -#define PCF2127_REG_MO (0x08) -#define PCF2127_REG_YR (0x09) - -/* the pcf2127 has 512 bytes nvmem, pcf2129 doesn't */ -#define PCF2127_REG_RAM_addr_MSB 0x1a -#define PCF2127_REG_RAM_wrt_cmd 0x1c -#define PCF2127_REG_RAM_rd_cmd 0x1d - -#define PCF2127_OSF BIT(7) /* Oscillator Fail flag */ +/* Watchdog timer value constants */ +#define PCF2127_WD_VAL_STOP 0 +#define PCF2127_WD_VAL_MIN 2 +#define PCF2127_WD_VAL_MAX 255 +#define PCF2127_WD_VAL_DEFAULT 60 struct pcf2127 { struct rtc_device *rtc; + struct watchdog_device wdd; struct regmap *regmap; }; @@ -54,30 +94,25 @@ static int pcf2127_rtc_read_time(struct device *dev, struct rtc_time *tm) struct pcf2127 *pcf2127 = dev_get_drvdata(dev); unsigned char buf[10]; int ret; - int i; - for (i = 0; i <= PCF2127_REG_CTRL3; i++) { - ret = regmap_read(pcf2127->regmap, PCF2127_REG_CTRL1 + i, - (unsigned int *)(buf + i)); - if (ret) { - dev_err(dev, "%s: read error\n", __func__); - return ret; - } - } - - ret = regmap_bulk_read(pcf2127->regmap, PCF2127_REG_SC, - (buf + PCF2127_REG_SC), - ARRAY_SIZE(buf) - PCF2127_REG_SC); + /* + * Avoid reading CTRL2 register as it causes WD_VAL register + * value to reset to 0 which means watchdog is stopped. + */ + ret = regmap_bulk_read(pcf2127->regmap, PCF2127_REG_CTRL3, + (buf + PCF2127_REG_CTRL3), + ARRAY_SIZE(buf) - PCF2127_REG_CTRL3); if (ret) { dev_err(dev, "%s: read error\n", __func__); return ret; } - if (buf[PCF2127_REG_CTRL3] & PCF2127_REG_CTRL3_BLF) + if (buf[PCF2127_REG_CTRL3] & PCF2127_BIT_CTRL3_BLF) dev_info(dev, "low voltage detected, check/replace RTC battery.\n"); - if (buf[PCF2127_REG_SC] & PCF2127_OSF) { + /* Clock integrity is not guaranteed when OSF flag is set. */ + if (buf[PCF2127_REG_SC] & PCF2127_BIT_SC_OSF) { /* * no need clear the flag here, * it will be cleared once the new date is saved @@ -88,14 +123,12 @@ static int pcf2127_rtc_read_time(struct device *dev, struct rtc_time *tm) } dev_dbg(dev, - "%s: raw data is cr1=%02x, cr2=%02x, cr3=%02x, " - "sec=%02x, min=%02x, hr=%02x, " + "%s: raw data is cr3=%02x, sec=%02x, min=%02x, hr=%02x, " "mday=%02x, wday=%02x, mon=%02x, year=%02x\n", - __func__, - buf[0], buf[1], buf[2], - buf[3], buf[4], buf[5], - buf[6], buf[7], buf[8], buf[9]); - + __func__, buf[PCF2127_REG_CTRL3], buf[PCF2127_REG_SC], + buf[PCF2127_REG_MN], buf[PCF2127_REG_HR], + buf[PCF2127_REG_DM], buf[PCF2127_REG_DW], + buf[PCF2127_REG_MO], buf[PCF2127_REG_YR]); tm->tm_sec = bcd2bin(buf[PCF2127_REG_SC] & 0x7F); tm->tm_min = bcd2bin(buf[PCF2127_REG_MN] & 0x7F); @@ -166,11 +199,9 @@ static int pcf2127_rtc_ioctl(struct device *dev, if (ret) return ret; - touser = touser & PCF2127_REG_CTRL3_BLF ? 1 : 0; + touser = touser & PCF2127_BIT_CTRL3_BLF ? RTC_VL_BACKUP_LOW : 0; - if (copy_to_user((void __user *)arg, &touser, sizeof(int))) - return -EFAULT; - return 0; + return put_user(touser, (unsigned int __user *)arg); default: return -ENOIOCTLCMD; } @@ -192,12 +223,12 @@ static int pcf2127_nvmem_read(void *priv, unsigned int offset, int ret; unsigned char offsetbuf[] = { offset >> 8, offset }; - ret = regmap_bulk_write(pcf2127->regmap, PCF2127_REG_RAM_addr_MSB, + ret = regmap_bulk_write(pcf2127->regmap, PCF2127_REG_RAM_ADDR_MSB, offsetbuf, 2); if (ret) return ret; - ret = regmap_bulk_read(pcf2127->regmap, PCF2127_REG_RAM_rd_cmd, + ret = regmap_bulk_read(pcf2127->regmap, PCF2127_REG_RAM_RD_CMD, val, bytes); return ret ?: bytes; @@ -210,21 +241,181 @@ static int pcf2127_nvmem_write(void *priv, unsigned int offset, int ret; unsigned char offsetbuf[] = { offset >> 8, offset }; - ret = regmap_bulk_write(pcf2127->regmap, PCF2127_REG_RAM_addr_MSB, + ret = regmap_bulk_write(pcf2127->regmap, PCF2127_REG_RAM_ADDR_MSB, offsetbuf, 2); if (ret) return ret; - ret = regmap_bulk_write(pcf2127->regmap, PCF2127_REG_RAM_wrt_cmd, + ret = regmap_bulk_write(pcf2127->regmap, PCF2127_REG_RAM_WRT_CMD, val, bytes); return ret ?: bytes; } +/* watchdog driver */ + +static int pcf2127_wdt_ping(struct watchdog_device *wdd) +{ + struct pcf2127 *pcf2127 = watchdog_get_drvdata(wdd); + + return regmap_write(pcf2127->regmap, PCF2127_REG_WD_VAL, wdd->timeout); +} + +/* + * Restart watchdog timer if feature is active. + * + * Note: Reading CTRL2 register causes watchdog to stop which is unfortunate, + * since register also contain control/status flags for other features. + * Always call this function after reading CTRL2 register. + */ +static int pcf2127_wdt_active_ping(struct watchdog_device *wdd) +{ + int ret = 0; + + if (watchdog_active(wdd)) { + ret = pcf2127_wdt_ping(wdd); + if (ret) + dev_err(wdd->parent, + "%s: watchdog restart failed, ret=%d\n", + __func__, ret); + } + + return ret; +} + +static int pcf2127_wdt_start(struct watchdog_device *wdd) +{ + return pcf2127_wdt_ping(wdd); +} + +static int pcf2127_wdt_stop(struct watchdog_device *wdd) +{ + struct pcf2127 *pcf2127 = watchdog_get_drvdata(wdd); + + return regmap_write(pcf2127->regmap, PCF2127_REG_WD_VAL, + PCF2127_WD_VAL_STOP); +} + +static int pcf2127_wdt_set_timeout(struct watchdog_device *wdd, + unsigned int new_timeout) +{ + dev_dbg(wdd->parent, "new watchdog timeout: %is (old: %is)\n", + new_timeout, wdd->timeout); + + wdd->timeout = new_timeout; + + return pcf2127_wdt_active_ping(wdd); +} + +static const struct watchdog_info pcf2127_wdt_info = { + .identity = "NXP PCF2127/PCF2129 Watchdog", + .options = WDIOF_KEEPALIVEPING | WDIOF_SETTIMEOUT, +}; + +static const struct watchdog_ops pcf2127_watchdog_ops = { + .owner = THIS_MODULE, + .start = pcf2127_wdt_start, + .stop = pcf2127_wdt_stop, + .ping = pcf2127_wdt_ping, + .set_timeout = pcf2127_wdt_set_timeout, +}; + +/* sysfs interface */ + +static ssize_t timestamp0_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct pcf2127 *pcf2127 = dev_get_drvdata(dev->parent); + int ret; + + ret = regmap_update_bits(pcf2127->regmap, PCF2127_REG_CTRL1, + PCF2127_BIT_CTRL1_TSF1, 0); + if (ret) { + dev_err(dev, "%s: update ctrl1 ret=%d\n", __func__, ret); + return ret; + } + + ret = regmap_update_bits(pcf2127->regmap, PCF2127_REG_CTRL2, + PCF2127_BIT_CTRL2_TSF2, 0); + if (ret) { + dev_err(dev, "%s: update ctrl2 ret=%d\n", __func__, ret); + return ret; + } + + ret = pcf2127_wdt_active_ping(&pcf2127->wdd); + if (ret) + return ret; + + return count; +}; + +static ssize_t timestamp0_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct pcf2127 *pcf2127 = dev_get_drvdata(dev->parent); + struct rtc_time tm; + int ret; + unsigned char data[25]; + + ret = regmap_bulk_read(pcf2127->regmap, PCF2127_REG_CTRL1, data, + sizeof(data)); + if (ret) { + dev_err(dev, "%s: read error ret=%d\n", __func__, ret); + return ret; + } + + dev_dbg(dev, + "%s: raw data is cr1=%02x, cr2=%02x, cr3=%02x, ts_sc=%02x, " + "ts_mn=%02x, ts_hr=%02x, ts_dm=%02x, ts_mo=%02x, ts_yr=%02x\n", + __func__, data[PCF2127_REG_CTRL1], data[PCF2127_REG_CTRL2], + data[PCF2127_REG_CTRL3], data[PCF2127_REG_TS_SC], + data[PCF2127_REG_TS_MN], data[PCF2127_REG_TS_HR], + data[PCF2127_REG_TS_DM], data[PCF2127_REG_TS_MO], + data[PCF2127_REG_TS_YR]); + + ret = pcf2127_wdt_active_ping(&pcf2127->wdd); + if (ret) + return ret; + + if (!(data[PCF2127_REG_CTRL1] & PCF2127_BIT_CTRL1_TSF1) && + !(data[PCF2127_REG_CTRL2] & PCF2127_BIT_CTRL2_TSF2)) + return 0; + + tm.tm_sec = bcd2bin(data[PCF2127_REG_TS_SC] & 0x7F); + tm.tm_min = bcd2bin(data[PCF2127_REG_TS_MN] & 0x7F); + tm.tm_hour = bcd2bin(data[PCF2127_REG_TS_HR] & 0x3F); + tm.tm_mday = bcd2bin(data[PCF2127_REG_TS_DM] & 0x3F); + /* TS_MO register (month) value range: 1-12 */ + tm.tm_mon = bcd2bin(data[PCF2127_REG_TS_MO] & 0x1F) - 1; + tm.tm_year = bcd2bin(data[PCF2127_REG_TS_YR]); + if (tm.tm_year < 70) + tm.tm_year += 100; /* assume we are in 1970...2069 */ + + ret = rtc_valid_tm(&tm); + if (ret) + return ret; + + return sprintf(buf, "%llu\n", + (unsigned long long)rtc_tm_to_time64(&tm)); +}; + +static DEVICE_ATTR_RW(timestamp0); + +static struct attribute *pcf2127_attrs[] = { + &dev_attr_timestamp0.attr, + NULL +}; + +static const struct attribute_group pcf2127_attr_group = { + .attrs = pcf2127_attrs, +}; + static int pcf2127_probe(struct device *dev, struct regmap *regmap, const char *name, bool has_nvmem) { struct pcf2127 *pcf2127; + u32 wdd_timeout; int ret = 0; dev_dbg(dev, "%s\n", __func__); @@ -237,11 +428,22 @@ static int pcf2127_probe(struct device *dev, struct regmap *regmap, dev_set_drvdata(dev, pcf2127); - pcf2127->rtc = devm_rtc_device_register(dev, name, &pcf2127_rtc_ops, - THIS_MODULE); + pcf2127->rtc = devm_rtc_allocate_device(dev); if (IS_ERR(pcf2127->rtc)) return PTR_ERR(pcf2127->rtc); + pcf2127->rtc->ops = &pcf2127_rtc_ops; + + pcf2127->wdd.parent = dev; + pcf2127->wdd.info = &pcf2127_wdt_info; + pcf2127->wdd.ops = &pcf2127_watchdog_ops; + pcf2127->wdd.min_timeout = PCF2127_WD_VAL_MIN; + pcf2127->wdd.max_timeout = PCF2127_WD_VAL_MAX; + pcf2127->wdd.timeout = PCF2127_WD_VAL_DEFAULT; + pcf2127->wdd.min_hw_heartbeat_ms = 500; + + watchdog_set_drvdata(&pcf2127->wdd, pcf2127); + if (has_nvmem) { struct nvmem_config nvmem_cfg = { .priv = pcf2127, @@ -253,7 +455,91 @@ static int pcf2127_probe(struct device *dev, struct regmap *regmap, ret = rtc_nvmem_register(pcf2127->rtc, &nvmem_cfg); } - return ret; + /* + * Watchdog timer enabled and reset pin /RST activated when timed out. + * Select 1Hz clock source for watchdog timer. + * Note: Countdown timer disabled and not available. + */ + ret = regmap_update_bits(pcf2127->regmap, PCF2127_REG_WD_CTL, + PCF2127_BIT_WD_CTL_CD1 | + PCF2127_BIT_WD_CTL_CD0 | + PCF2127_BIT_WD_CTL_TF1 | + PCF2127_BIT_WD_CTL_TF0, + PCF2127_BIT_WD_CTL_CD1 | + PCF2127_BIT_WD_CTL_CD0 | + PCF2127_BIT_WD_CTL_TF1); + if (ret) { + dev_err(dev, "%s: watchdog config (wd_ctl) failed\n", __func__); + return ret; + } + + /* Test if watchdog timer is started by bootloader */ + ret = regmap_read(pcf2127->regmap, PCF2127_REG_WD_VAL, &wdd_timeout); + if (ret) + return ret; + + if (wdd_timeout) + set_bit(WDOG_HW_RUNNING, &pcf2127->wdd.status); + +#ifdef CONFIG_WATCHDOG + ret = devm_watchdog_register_device(dev, &pcf2127->wdd); + if (ret) + return ret; +#endif /* CONFIG_WATCHDOG */ + + /* + * Disable battery low/switch-over timestamp and interrupts. + * Clear battery interrupt flags which can block new trigger events. + * Note: This is the default chip behaviour but added to ensure + * correct tamper timestamp and interrupt function. + */ + ret = regmap_update_bits(pcf2127->regmap, PCF2127_REG_CTRL3, + PCF2127_BIT_CTRL3_BTSE | + PCF2127_BIT_CTRL3_BF | + PCF2127_BIT_CTRL3_BIE | + PCF2127_BIT_CTRL3_BLIE, 0); + if (ret) { + dev_err(dev, "%s: interrupt config (ctrl3) failed\n", + __func__); + return ret; + } + + /* + * Enable timestamp function and store timestamp of first trigger + * event until TSF1 and TFS2 interrupt flags are cleared. + */ + ret = regmap_update_bits(pcf2127->regmap, PCF2127_REG_TS_CTRL, + PCF2127_BIT_TS_CTRL_TSOFF | + PCF2127_BIT_TS_CTRL_TSM, + PCF2127_BIT_TS_CTRL_TSM); + if (ret) { + dev_err(dev, "%s: tamper detection config (ts_ctrl) failed\n", + __func__); + return ret; + } + + /* + * Enable interrupt generation when TSF1 or TSF2 timestamp flags + * are set. Interrupt signal is an open-drain output and can be + * left floating if unused. + */ + ret = regmap_update_bits(pcf2127->regmap, PCF2127_REG_CTRL2, + PCF2127_BIT_CTRL2_TSIE, + PCF2127_BIT_CTRL2_TSIE); + if (ret) { + dev_err(dev, "%s: tamper detection config (ctrl2) failed\n", + __func__); + return ret; + } + + ret = rtc_add_group(pcf2127->rtc, &pcf2127_attr_group); + if (ret) { + dev_err(dev, "%s: tamper sysfs registering failed\n", + __func__); + return ret; + } + + return rtc_register_device(pcf2127->rtc); } #ifdef CONFIG_OF diff --git a/drivers/rtc/rtc-pcf85063.c b/drivers/rtc/rtc-pcf85063.c index 1afa6d9fa9fb..1db17ba1fc64 100644 --- a/drivers/rtc/rtc-pcf85063.c +++ b/drivers/rtc/rtc-pcf85063.c @@ -289,21 +289,9 @@ static int pcf85063_ioctl(struct device *dev, unsigned int cmd, if (ret < 0) return ret; - if (status & PCF85063_REG_SC_OS) - dev_warn(&pcf85063->rtc->dev, "Voltage low, data loss detected.\n"); + status = status & PCF85063_REG_SC_OS ? RTC_VL_DATA_INVALID : 0; - status &= PCF85063_REG_SC_OS; - - if (copy_to_user((void __user *)arg, &status, sizeof(int))) - return -EFAULT; - - return 0; - - case RTC_VL_CLR: - ret = regmap_update_bits(pcf85063->regmap, PCF85063_REG_SC, - PCF85063_REG_SC_OS, 0); - - return ret; + return put_user(status, (unsigned int __user *)arg); default: return -ENOIOCTLCMD; diff --git a/drivers/rtc/rtc-pcf8523.c b/drivers/rtc/rtc-pcf8523.c index 2f435e533b10..47e0f411dd5c 100644 --- a/drivers/rtc/rtc-pcf8523.c +++ b/drivers/rtc/rtc-pcf8523.c @@ -35,10 +35,6 @@ #define REG_OFFSET 0x0e #define REG_OFFSET_MODE BIT(7) -struct pcf8523 { - struct rtc_device *rtc; -}; - static int pcf8523_read(struct i2c_client *client, u8 reg, u8 *valuep) { struct i2c_msg msgs[2]; @@ -286,11 +282,11 @@ static int pcf8523_rtc_ioctl(struct device *dev, unsigned int cmd, ret = pcf8523_voltage_low(client); if (ret < 0) return ret; + if (ret) + ret = RTC_VL_BACKUP_LOW; - if (copy_to_user((void __user *)arg, &ret, sizeof(int))) - return -EFAULT; + return put_user(ret, (unsigned int __user *)arg); - return 0; default: return -ENOIOCTLCMD; } @@ -345,16 +341,12 @@ static const struct rtc_class_ops pcf8523_rtc_ops = { static int pcf8523_probe(struct i2c_client *client, const struct i2c_device_id *id) { - struct pcf8523 *pcf; + struct rtc_device *rtc; int err; if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) return -ENODEV; - pcf = devm_kzalloc(&client->dev, sizeof(*pcf), GFP_KERNEL); - if (!pcf) - return -ENOMEM; - err = pcf8523_load_capacitance(client); if (err < 0) dev_warn(&client->dev, "failed to set xtal load capacitance: %d", @@ -364,12 +356,10 @@ static int pcf8523_probe(struct i2c_client *client, if (err < 0) return err; - pcf->rtc = devm_rtc_device_register(&client->dev, DRIVER_NAME, + rtc = devm_rtc_device_register(&client->dev, DRIVER_NAME, &pcf8523_rtc_ops, THIS_MODULE); - if (IS_ERR(pcf->rtc)) - return PTR_ERR(pcf->rtc); - - i2c_set_clientdata(client, pcf); + if (IS_ERR(rtc)) + return PTR_ERR(rtc); return 0; } diff --git a/drivers/rtc/rtc-pcf85363.c b/drivers/rtc/rtc-pcf85363.c index a075e77617dc..3450d615974d 100644 --- a/drivers/rtc/rtc-pcf85363.c +++ b/drivers/rtc/rtc-pcf85363.c @@ -166,7 +166,12 @@ static int pcf85363_rtc_set_time(struct device *dev, struct rtc_time *tm) buf[DT_YEARS] = bin2bcd(tm->tm_year % 100); ret = regmap_bulk_write(pcf85363->regmap, CTRL_STOP_EN, - tmp, sizeof(tmp)); + tmp, 2); + if (ret) + return ret; + + ret = regmap_bulk_write(pcf85363->regmap, DT_100THS, + buf, sizeof(tmp) - 2); if (ret) return ret; diff --git a/drivers/rtc/rtc-pcf8563.c b/drivers/rtc/rtc-pcf8563.c index ac159d24286d..2dc30eafa639 100644 --- a/drivers/rtc/rtc-pcf8563.c +++ b/drivers/rtc/rtc-pcf8563.c @@ -22,8 +22,8 @@ #define PCF8563_REG_ST1 0x00 /* status */ #define PCF8563_REG_ST2 0x01 -#define PCF8563_BIT_AIE (1 << 1) -#define PCF8563_BIT_AF (1 << 3) +#define PCF8563_BIT_AIE BIT(1) +#define PCF8563_BIT_AF BIT(3) #define PCF8563_BITS_ST2_N (7 << 5) #define PCF8563_REG_SC 0x02 /* datetime */ @@ -76,7 +76,6 @@ struct pcf8563 { * 1970...2069. */ int c_polarity; /* 0: MO_C=1 means 19xx, otherwise MO_C=1 means 20xx */ - int voltage_low; /* incicates if a low_voltage was detected */ struct i2c_client *client; #ifdef CONFIG_COMMON_CLK @@ -196,8 +195,9 @@ static irqreturn_t pcf8563_irq(int irq, void *dev_id) * In the routines that deal directly with the pcf8563 hardware, we use * rtc_time -- month 0-11, hour 0-23, yr = calendar year-epoch. */ -static int pcf8563_get_datetime(struct i2c_client *client, struct rtc_time *tm) +static int pcf8563_rtc_read_time(struct device *dev, struct rtc_time *tm) { + struct i2c_client *client = to_i2c_client(dev); struct pcf8563 *pcf8563 = i2c_get_clientdata(client); unsigned char buf[9]; int err; @@ -207,7 +207,6 @@ static int pcf8563_get_datetime(struct i2c_client *client, struct rtc_time *tm) return err; if (buf[PCF8563_REG_SC] & PCF8563_SC_LV) { - pcf8563->voltage_low = 1; dev_err(&client->dev, "low voltage detected, date/time is not reliable.\n"); return -EINVAL; @@ -228,9 +227,7 @@ static int pcf8563_get_datetime(struct i2c_client *client, struct rtc_time *tm) tm->tm_mday = bcd2bin(buf[PCF8563_REG_DM] & 0x3F); tm->tm_wday = buf[PCF8563_REG_DW] & 0x07; tm->tm_mon = bcd2bin(buf[PCF8563_REG_MO] & 0x1F) - 1; /* rtc mn 1-12 */ - tm->tm_year = bcd2bin(buf[PCF8563_REG_YR]); - if (tm->tm_year < 70) - tm->tm_year += 100; /* assume we are in 1970...2069 */ + tm->tm_year = bcd2bin(buf[PCF8563_REG_YR]) + 100; /* detect the polarity heuristically. see note above. */ pcf8563->c_polarity = (buf[PCF8563_REG_MO] & PCF8563_MO_C) ? (tm->tm_year >= 100) : (tm->tm_year < 100); @@ -244,8 +241,9 @@ static int pcf8563_get_datetime(struct i2c_client *client, struct rtc_time *tm) return 0; } -static int pcf8563_set_datetime(struct i2c_client *client, struct rtc_time *tm) +static int pcf8563_rtc_set_time(struct device *dev, struct rtc_time *tm) { + struct i2c_client *client = to_i2c_client(dev); struct pcf8563 *pcf8563 = i2c_get_clientdata(client); unsigned char buf[9]; @@ -266,7 +264,7 @@ static int pcf8563_set_datetime(struct i2c_client *client, struct rtc_time *tm) buf[PCF8563_REG_MO] = bin2bcd(tm->tm_mon + 1); /* year and century */ - buf[PCF8563_REG_YR] = bin2bcd(tm->tm_year % 100); + buf[PCF8563_REG_YR] = bin2bcd(tm->tm_year - 100); if (pcf8563->c_polarity ? (tm->tm_year >= 100) : (tm->tm_year < 100)) buf[PCF8563_REG_MO] |= PCF8563_MO_C; @@ -276,53 +274,23 @@ static int pcf8563_set_datetime(struct i2c_client *client, struct rtc_time *tm) 9 - PCF8563_REG_SC, buf + PCF8563_REG_SC); } -#ifdef CONFIG_RTC_INTF_DEV static int pcf8563_rtc_ioctl(struct device *dev, unsigned int cmd, unsigned long arg) { - struct pcf8563 *pcf8563 = i2c_get_clientdata(to_i2c_client(dev)); - struct rtc_time tm; + struct i2c_client *client = to_i2c_client(dev); + int ret; switch (cmd) { case RTC_VL_READ: - if (pcf8563->voltage_low) - dev_info(dev, "low voltage detected, date/time is not reliable.\n"); - - if (copy_to_user((void __user *)arg, &pcf8563->voltage_low, - sizeof(int))) - return -EFAULT; - return 0; - case RTC_VL_CLR: - /* - * Clear the VL bit in the seconds register in case - * the time has not been set already (which would - * have cleared it). This does not really matter - * because of the cached voltage_low value but do it - * anyway for consistency. - */ - if (pcf8563_get_datetime(to_i2c_client(dev), &tm)) - pcf8563_set_datetime(to_i2c_client(dev), &tm); - - /* Clear the cached value. */ - pcf8563->voltage_low = 0; + ret = i2c_smbus_read_byte_data(client, PCF8563_REG_SC); + if (ret < 0) + return ret; - return 0; + return put_user(ret & PCF8563_SC_LV ? RTC_VL_DATA_INVALID : 0, + (unsigned int __user *)arg); default: return -ENOIOCTLCMD; } } -#else -#define pcf8563_rtc_ioctl NULL -#endif - -static int pcf8563_rtc_read_time(struct device *dev, struct rtc_time *tm) -{ - return pcf8563_get_datetime(to_i2c_client(dev), tm); -} - -static int pcf8563_rtc_set_time(struct device *dev, struct rtc_time *tm) -{ - return pcf8563_set_datetime(to_i2c_client(dev), tm); -} static int pcf8563_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *tm) { @@ -400,7 +368,7 @@ static int pcf8563_irq_enable(struct device *dev, unsigned int enabled) #define clkout_hw_to_pcf8563(_hw) container_of(_hw, struct pcf8563, clkout_hw) -static int clkout_rates[] = { +static const int clkout_rates[] = { 32768, 1024, 32, @@ -591,13 +559,17 @@ static int pcf8563_probe(struct i2c_client *client, return err; } - pcf8563->rtc = devm_rtc_device_register(&client->dev, - pcf8563_driver.driver.name, - &pcf8563_rtc_ops, THIS_MODULE); - + pcf8563->rtc = devm_rtc_allocate_device(&client->dev); if (IS_ERR(pcf8563->rtc)) return PTR_ERR(pcf8563->rtc); + pcf8563->rtc->ops = &pcf8563_rtc_ops; + /* the pcf8563 alarm only supports a minute accuracy */ + pcf8563->rtc->uie_unsupported = 1; + pcf8563->rtc->range_min = RTC_TIMESTAMP_BEGIN_2000; + pcf8563->rtc->range_max = RTC_TIMESTAMP_END_2099; + pcf8563->rtc->set_start_time = true; + if (client->irq > 0) { err = devm_request_threaded_irq(&client->dev, client->irq, NULL, pcf8563_irq, @@ -608,17 +580,17 @@ static int pcf8563_probe(struct i2c_client *client, client->irq); return err; } - } + err = rtc_register_device(pcf8563->rtc); + if (err) + return err; + #ifdef CONFIG_COMMON_CLK /* register clk in common clk framework */ pcf8563_clkout_register_clk(pcf8563); #endif - /* the pcf8563 alarm only supports a minute accuracy */ - pcf8563->rtc->uie_unsupported = 1; - return 0; } @@ -632,6 +604,8 @@ MODULE_DEVICE_TABLE(i2c, pcf8563_id); #ifdef CONFIG_OF static const struct of_device_id pcf8563_of_match[] = { { .compatible = "nxp,pcf8563" }, + { .compatible = "epson,rtc8564" }, + { .compatible = "microcrystal,rv8564" }, {} }; MODULE_DEVICE_TABLE(of, pcf8563_of_match); diff --git a/drivers/rtc/rtc-pic32.c b/drivers/rtc/rtc-pic32.c index 1c4de6e90da0..2b6946744654 100644 --- a/drivers/rtc/rtc-pic32.c +++ b/drivers/rtc/rtc-pic32.c @@ -298,7 +298,6 @@ static int pic32_rtc_remove(struct platform_device *pdev) static int pic32_rtc_probe(struct platform_device *pdev) { struct pic32_rtc_dev *pdata; - struct resource *res; int ret; pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL); @@ -308,13 +307,10 @@ static int pic32_rtc_probe(struct platform_device *pdev) platform_set_drvdata(pdev, pdata); pdata->alarm_irq = platform_get_irq(pdev, 0); - if (pdata->alarm_irq < 0) { - dev_err(&pdev->dev, "no irq for alarm\n"); + if (pdata->alarm_irq < 0) return pdata->alarm_irq; - } - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - pdata->reg_base = devm_ioremap_resource(&pdev->dev, res); + pdata->reg_base = devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(pdata->reg_base)) return PTR_ERR(pdata->reg_base); diff --git a/drivers/rtc/rtc-pm8xxx.c b/drivers/rtc/rtc-pm8xxx.c index 9f9839c47e2f..07ea1be3abb9 100644 --- a/drivers/rtc/rtc-pm8xxx.c +++ b/drivers/rtc/rtc-pm8xxx.c @@ -49,7 +49,7 @@ struct pm8xxx_rtc_regs { * @regmap: regmap used to access RTC registers * @allow_set_time: indicates whether writing to the RTC is allowed * @rtc_alarm_irq: rtc alarm irq number. - * @ctrl_reg: rtc control register. + * @regs: rtc registers description. * @rtc_dev: device structure. * @ctrl_reg_lock: spinlock protecting access to ctrl_reg. */ @@ -468,10 +468,8 @@ static int pm8xxx_rtc_probe(struct platform_device *pdev) } rtc_dd->rtc_alarm_irq = platform_get_irq(pdev, 0); - if (rtc_dd->rtc_alarm_irq < 0) { - dev_err(&pdev->dev, "Alarm IRQ resource absent!\n"); + if (rtc_dd->rtc_alarm_irq < 0) return -ENXIO; - } rtc_dd->allow_set_time = of_property_read_bool(pdev->dev.of_node, "allow-set-time"); diff --git a/drivers/rtc/rtc-puv3.c b/drivers/rtc/rtc-puv3.c index 63b9e73fb97d..89ff713163dd 100644 --- a/drivers/rtc/rtc-puv3.c +++ b/drivers/rtc/rtc-puv3.c @@ -186,16 +186,12 @@ static int puv3_rtc_probe(struct platform_device *pdev) /* find the IRQs */ puv3_rtc_tickno = platform_get_irq(pdev, 1); - if (puv3_rtc_tickno < 0) { - dev_err(&pdev->dev, "no irq for rtc tick\n"); + if (puv3_rtc_tickno < 0) return -ENOENT; - } puv3_rtc_alarmno = platform_get_irq(pdev, 0); - if (puv3_rtc_alarmno < 0) { - dev_err(&pdev->dev, "no irq for alarm\n"); + if (puv3_rtc_alarmno < 0) return -ENOENT; - } dev_dbg(&pdev->dev, "PKUnity_rtc: tick irq %d, alarm irq %d\n", puv3_rtc_tickno, puv3_rtc_alarmno); @@ -239,10 +235,8 @@ static int puv3_rtc_probe(struct platform_device *pdev) /* register RTC and exit */ rtc->ops = &puv3_rtcops; ret = rtc_register_device(rtc); - if (ret) { - dev_err(&pdev->dev, "cannot attach rtc\n"); + if (ret) goto err_nortc; - } /* platform setup code should have handled this; sigh */ if (!device_can_wakeup(&pdev->dev)) diff --git a/drivers/rtc/rtc-pxa.c b/drivers/rtc/rtc-pxa.c index a7827fe7fb7b..d2f1d8f754bf 100644 --- a/drivers/rtc/rtc-pxa.c +++ b/drivers/rtc/rtc-pxa.c @@ -324,15 +324,11 @@ static int __init pxa_rtc_probe(struct platform_device *pdev) } sa1100_rtc->irq_1hz = platform_get_irq(pdev, 0); - if (sa1100_rtc->irq_1hz < 0) { - dev_err(dev, "No 1Hz IRQ resource defined\n"); + if (sa1100_rtc->irq_1hz < 0) return -ENXIO; - } sa1100_rtc->irq_alarm = platform_get_irq(pdev, 1); - if (sa1100_rtc->irq_alarm < 0) { - dev_err(dev, "No alarm IRQ resource defined\n"); + if (sa1100_rtc->irq_alarm < 0) return -ENXIO; - } pxa_rtc->base = devm_ioremap(dev, pxa_rtc->ress->start, resource_size(pxa_rtc->ress)); diff --git a/drivers/rtc/rtc-r7301.c b/drivers/rtc/rtc-r7301.c index 2498278853af..aaf1b95e3990 100644 --- a/drivers/rtc/rtc-r7301.c +++ b/drivers/rtc/rtc-r7301.c @@ -354,21 +354,16 @@ static void rtc7301_init(struct rtc7301_priv *priv) static int __init rtc7301_rtc_probe(struct platform_device *dev) { - struct resource *res; void __iomem *regs; struct rtc7301_priv *priv; struct rtc_device *rtc; int ret; - res = platform_get_resource(dev, IORESOURCE_MEM, 0); - if (!res) - return -ENODEV; - priv = devm_kzalloc(&dev->dev, sizeof(*priv), GFP_KERNEL); if (!priv) return -ENOMEM; - regs = devm_ioremap_resource(&dev->dev, res); + regs = devm_platform_ioremap_resource(dev, 0); if (IS_ERR(regs)) return PTR_ERR(regs); diff --git a/drivers/rtc/rtc-rk808.c b/drivers/rtc/rtc-rk808.c index c34540baa12a..c0334c602e88 100644 --- a/drivers/rtc/rtc-rk808.c +++ b/drivers/rtc/rtc-rk808.c @@ -434,12 +434,8 @@ static int rk808_rtc_probe(struct platform_device *pdev) rk808_rtc->rtc->ops = &rk808_rtc_ops; rk808_rtc->irq = platform_get_irq(pdev, 0); - if (rk808_rtc->irq < 0) { - if (rk808_rtc->irq != -EPROBE_DEFER) - dev_err(&pdev->dev, "Wake up is not possible as irq = %d\n", - rk808_rtc->irq); + if (rk808_rtc->irq < 0) return rk808_rtc->irq; - } /* request alarm irq of rk808 */ ret = devm_request_threaded_irq(&pdev->dev, rk808_rtc->irq, NULL, diff --git a/drivers/rtc/rtc-rtd119x.c b/drivers/rtc/rtc-rtd119x.c index b233559d950b..bb98f2d574a5 100644 --- a/drivers/rtc/rtc-rtd119x.c +++ b/drivers/rtc/rtc-rtd119x.c @@ -167,7 +167,6 @@ static const struct of_device_id rtd119x_rtc_dt_ids[] = { static int rtd119x_rtc_probe(struct platform_device *pdev) { struct rtd119x_rtc *data; - struct resource *res; u32 val; int ret; @@ -178,8 +177,7 @@ static int rtd119x_rtc_probe(struct platform_device *pdev) platform_set_drvdata(pdev, data); data->base_year = 2014; - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - data->base = devm_ioremap_resource(&pdev->dev, res); + data->base = devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(data->base)) return PTR_ERR(data->base); diff --git a/drivers/rtc/rtc-rv3028.c b/drivers/rtc/rtc-rv3028.c index 06884ebb7a61..a0ddc86c975a 100644 --- a/drivers/rtc/rtc-rv3028.c +++ b/drivers/rtc/rtc-rv3028.c @@ -8,6 +8,7 @@ * */ +#include <linux/clk-provider.h> #include <linux/bcd.h> #include <linux/bitops.h> #include <linux/i2c.h> @@ -52,6 +53,11 @@ #define RV3028_STATUS_CLKF BIT(6) #define RV3028_STATUS_EEBUSY BIT(7) +#define RV3028_CLKOUT_FD_MASK GENMASK(2, 0) +#define RV3028_CLKOUT_PORIE BIT(3) +#define RV3028_CLKOUT_CLKSY BIT(6) +#define RV3028_CLKOUT_CLKOE BIT(7) + #define RV3028_CTRL1_EERD BIT(3) #define RV3028_CTRL1_WADA BIT(5) @@ -84,6 +90,9 @@ struct rv3028_data { struct regmap *regmap; struct rtc_device *rtc; enum rv3028_type type; +#ifdef CONFIG_COMMON_CLK + struct clk_hw clkout_hw; +#endif }; static u16 rv3028_trickle_resistors[] = {1000, 3000, 6000, 11000}; @@ -419,21 +428,8 @@ static int rv3028_ioctl(struct device *dev, unsigned int cmd, unsigned long arg) if (ret < 0) return ret; - if (status & RV3028_STATUS_PORF) - dev_warn(&rv3028->rtc->dev, "Voltage low, data loss detected.\n"); - - status &= RV3028_STATUS_PORF; - - if (copy_to_user((void __user *)arg, &status, sizeof(int))) - return -EFAULT; - - return 0; - - case RTC_VL_CLR: - ret = regmap_update_bits(rv3028->regmap, RV3028_STATUS, - RV3028_STATUS_PORF, 0); - - return ret; + status = status & RV3028_STATUS_PORF ? RTC_VL_DATA_INVALID : 0; + return put_user(status, (unsigned int __user *)arg); default: return -ENOIOCTLCMD; @@ -581,6 +577,140 @@ restore_eerd: return ret; } +#ifdef CONFIG_COMMON_CLK +#define clkout_hw_to_rv3028(hw) container_of(hw, struct rv3028_data, clkout_hw) + +static int clkout_rates[] = { + 32768, + 8192, + 1024, + 64, + 32, + 1, +}; + +static unsigned long rv3028_clkout_recalc_rate(struct clk_hw *hw, + unsigned long parent_rate) +{ + int clkout, ret; + struct rv3028_data *rv3028 = clkout_hw_to_rv3028(hw); + + ret = regmap_read(rv3028->regmap, RV3028_CLKOUT, &clkout); + if (ret < 0) + return 0; + + clkout &= RV3028_CLKOUT_FD_MASK; + return clkout_rates[clkout]; +} + +static long rv3028_clkout_round_rate(struct clk_hw *hw, unsigned long rate, + unsigned long *prate) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(clkout_rates); i++) + if (clkout_rates[i] <= rate) + return clkout_rates[i]; + + return 0; +} + +static int rv3028_clkout_set_rate(struct clk_hw *hw, unsigned long rate, + unsigned long parent_rate) +{ + int i, ret; + struct rv3028_data *rv3028 = clkout_hw_to_rv3028(hw); + + ret = regmap_write(rv3028->regmap, RV3028_CLKOUT, 0x0); + if (ret < 0) + return ret; + + for (i = 0; i < ARRAY_SIZE(clkout_rates); i++) { + if (clkout_rates[i] == rate) { + ret = regmap_update_bits(rv3028->regmap, + RV3028_CLKOUT, + RV3028_CLKOUT_FD_MASK, i); + if (ret < 0) + return ret; + + return regmap_write(rv3028->regmap, RV3028_CLKOUT, + RV3028_CLKOUT_CLKSY | RV3028_CLKOUT_CLKOE); + } + } + + return -EINVAL; +} + +static int rv3028_clkout_prepare(struct clk_hw *hw) +{ + struct rv3028_data *rv3028 = clkout_hw_to_rv3028(hw); + + return regmap_write(rv3028->regmap, RV3028_CLKOUT, + RV3028_CLKOUT_CLKSY | RV3028_CLKOUT_CLKOE); +} + +static void rv3028_clkout_unprepare(struct clk_hw *hw) +{ + struct rv3028_data *rv3028 = clkout_hw_to_rv3028(hw); + + regmap_write(rv3028->regmap, RV3028_CLKOUT, 0x0); + regmap_update_bits(rv3028->regmap, RV3028_STATUS, + RV3028_STATUS_CLKF, 0); +} + +static int rv3028_clkout_is_prepared(struct clk_hw *hw) +{ + int clkout, ret; + struct rv3028_data *rv3028 = clkout_hw_to_rv3028(hw); + + ret = regmap_read(rv3028->regmap, RV3028_CLKOUT, &clkout); + if (ret < 0) + return ret; + + return !!(clkout & RV3028_CLKOUT_CLKOE); +} + +static const struct clk_ops rv3028_clkout_ops = { + .prepare = rv3028_clkout_prepare, + .unprepare = rv3028_clkout_unprepare, + .is_prepared = rv3028_clkout_is_prepared, + .recalc_rate = rv3028_clkout_recalc_rate, + .round_rate = rv3028_clkout_round_rate, + .set_rate = rv3028_clkout_set_rate, +}; + +static int rv3028_clkout_register_clk(struct rv3028_data *rv3028, + struct i2c_client *client) +{ + int ret; + struct clk *clk; + struct clk_init_data init; + struct device_node *node = client->dev.of_node; + + ret = regmap_update_bits(rv3028->regmap, RV3028_STATUS, + RV3028_STATUS_CLKF, 0); + if (ret < 0) + return ret; + + init.name = "rv3028-clkout"; + init.ops = &rv3028_clkout_ops; + init.flags = 0; + init.parent_names = NULL; + init.num_parents = 0; + rv3028->clkout_hw.init = &init; + + /* optional override of the clockname */ + of_property_read_string(node, "clock-output-names", &init.name); + + /* register the clock */ + clk = devm_clk_register(&client->dev, &rv3028->clkout_hw); + if (!IS_ERR(clk)) + of_clk_add_provider(node, of_clk_src_simple_get, clk); + + return 0; +} +#endif + static struct rtc_class_ops rv3028_rtc_ops = { .read_time = rv3028_get_time, .set_time = rv3028_set_time, @@ -639,9 +769,8 @@ static int rv3028_probe(struct i2c_client *client) dev_warn(&client->dev, "An alarm may have been missed.\n"); rv3028->rtc = devm_rtc_allocate_device(&client->dev); - if (IS_ERR(rv3028->rtc)) { + if (IS_ERR(rv3028->rtc)) return PTR_ERR(rv3028->rtc); - } if (client->irq > 0) { ret = devm_request_threaded_irq(&client->dev, client->irq, @@ -709,6 +838,9 @@ static int rv3028_probe(struct i2c_client *client) rv3028->rtc->max_user_freq = 1; +#ifdef CONFIG_COMMON_CLK + rv3028_clkout_register_clk(rv3028, client); +#endif return 0; } diff --git a/drivers/rtc/rtc-rv3029c2.c b/drivers/rtc/rtc-rv3029c2.c index 4a0e8ec015cc..62718231731b 100644 --- a/drivers/rtc/rtc-rv3029c2.c +++ b/drivers/rtc/rtc-rv3029c2.c @@ -109,10 +109,8 @@ #define RV3029_CONTROL_E2P_TOV_MASK 0x3F /* XTAL turnover temp mask */ /* user ram section */ -#define RV3029_USR1_RAM_PAGE 0x38 -#define RV3029_USR1_SECTION_LEN 0x04 -#define RV3029_USR2_RAM_PAGE 0x3C -#define RV3029_USR2_SECTION_LEN 0x04 +#define RV3029_RAM_PAGE 0x38 +#define RV3029_RAM_SECTION_LEN 8 struct rv3029_data { struct device *dev; @@ -121,77 +119,13 @@ struct rv3029_data { int irq; }; -static int rv3029_read_regs(struct device *dev, u8 reg, u8 *buf, - unsigned int len) -{ - struct rv3029_data *rv3029 = dev_get_drvdata(dev); - - if ((reg > RV3029_USR1_RAM_PAGE + 7) || - (reg + len > RV3029_USR1_RAM_PAGE + 8)) - return -EINVAL; - - return regmap_bulk_read(rv3029->regmap, reg, buf, len); -} - -static int rv3029_write_regs(struct device *dev, u8 reg, u8 const buf[], - unsigned int len) -{ - struct rv3029_data *rv3029 = dev_get_drvdata(dev); - - if ((reg > RV3029_USR1_RAM_PAGE + 7) || - (reg + len > RV3029_USR1_RAM_PAGE + 8)) - return -EINVAL; - - return regmap_bulk_write(rv3029->regmap, reg, buf, len); -} - -static int rv3029_update_bits(struct device *dev, u8 reg, u8 mask, u8 set) -{ - u8 buf; - int ret; - - ret = rv3029_read_regs(dev, reg, &buf, 1); - if (ret < 0) - return ret; - buf &= ~mask; - buf |= set & mask; - ret = rv3029_write_regs(dev, reg, &buf, 1); - if (ret < 0) - return ret; - - return 0; -} - -static int rv3029_get_sr(struct device *dev, u8 *buf) -{ - int ret = rv3029_read_regs(dev, RV3029_STATUS, buf, 1); - - if (ret < 0) - return -EIO; - dev_dbg(dev, "status = 0x%.2x (%d)\n", buf[0], buf[0]); - return 0; -} - -static int rv3029_set_sr(struct device *dev, u8 val) -{ - u8 buf[1]; - int sr; - - buf[0] = val; - sr = rv3029_write_regs(dev, RV3029_STATUS, buf, 1); - dev_dbg(dev, "status = 0x%.2x (%d)\n", buf[0], buf[0]); - if (sr < 0) - return -EIO; - return 0; -} - -static int rv3029_eeprom_busywait(struct device *dev) +static int rv3029_eeprom_busywait(struct rv3029_data *rv3029) { + unsigned int sr; int i, ret; - u8 sr; for (i = 100; i > 0; i--) { - ret = rv3029_get_sr(dev, &sr); + ret = regmap_read(rv3029->regmap, RV3029_STATUS, &sr); if (ret < 0) break; if (!(sr & RV3029_STATUS_EEBUSY)) @@ -199,126 +133,128 @@ static int rv3029_eeprom_busywait(struct device *dev) usleep_range(1000, 10000); } if (i <= 0) { - dev_err(dev, "EEPROM busy wait timeout.\n"); + dev_err(rv3029->dev, "EEPROM busy wait timeout.\n"); return -ETIMEDOUT; } return ret; } -static int rv3029_eeprom_exit(struct device *dev) +static int rv3029_eeprom_exit(struct rv3029_data *rv3029) { /* Re-enable eeprom refresh */ - return rv3029_update_bits(dev, RV3029_ONOFF_CTRL, + return regmap_update_bits(rv3029->regmap, RV3029_ONOFF_CTRL, RV3029_ONOFF_CTRL_EERE, RV3029_ONOFF_CTRL_EERE); } -static int rv3029_eeprom_enter(struct device *dev) +static int rv3029_eeprom_enter(struct rv3029_data *rv3029) { + unsigned int sr; int ret; - u8 sr; /* Check whether we are in the allowed voltage range. */ - ret = rv3029_get_sr(dev, &sr); + ret = regmap_read(rv3029->regmap, RV3029_STATUS, &sr); if (ret < 0) return ret; - if (sr & (RV3029_STATUS_VLOW1 | RV3029_STATUS_VLOW2)) { + if (sr & RV3029_STATUS_VLOW2) + return -ENODEV; + if (sr & RV3029_STATUS_VLOW1) { /* We clear the bits and retry once just in case * we had a brown out in early startup. */ - sr &= ~RV3029_STATUS_VLOW1; - sr &= ~RV3029_STATUS_VLOW2; - ret = rv3029_set_sr(dev, sr); + ret = regmap_update_bits(rv3029->regmap, RV3029_STATUS, + RV3029_STATUS_VLOW1, 0); if (ret < 0) return ret; usleep_range(1000, 10000); - ret = rv3029_get_sr(dev, &sr); + ret = regmap_read(rv3029->regmap, RV3029_STATUS, &sr); if (ret < 0) return ret; - if (sr & (RV3029_STATUS_VLOW1 | RV3029_STATUS_VLOW2)) { - dev_err(dev, + if (sr & RV3029_STATUS_VLOW1) { + dev_err(rv3029->dev, "Supply voltage is too low to safely access the EEPROM.\n"); return -ENODEV; } } /* Disable eeprom refresh. */ - ret = rv3029_update_bits(dev, RV3029_ONOFF_CTRL, RV3029_ONOFF_CTRL_EERE, - 0); + ret = regmap_update_bits(rv3029->regmap, RV3029_ONOFF_CTRL, + RV3029_ONOFF_CTRL_EERE, 0); if (ret < 0) return ret; /* Wait for any previous eeprom accesses to finish. */ - ret = rv3029_eeprom_busywait(dev); + ret = rv3029_eeprom_busywait(rv3029); if (ret < 0) - rv3029_eeprom_exit(dev); + rv3029_eeprom_exit(rv3029); return ret; } -static int rv3029_eeprom_read(struct device *dev, u8 reg, +static int rv3029_eeprom_read(struct rv3029_data *rv3029, u8 reg, u8 buf[], size_t len) { int ret, err; - err = rv3029_eeprom_enter(dev); + err = rv3029_eeprom_enter(rv3029); if (err < 0) return err; - ret = rv3029_read_regs(dev, reg, buf, len); + ret = regmap_bulk_read(rv3029->regmap, reg, buf, len); - err = rv3029_eeprom_exit(dev); + err = rv3029_eeprom_exit(rv3029); if (err < 0) return err; return ret; } -static int rv3029_eeprom_write(struct device *dev, u8 reg, +static int rv3029_eeprom_write(struct rv3029_data *rv3029, u8 reg, u8 const buf[], size_t len) { - int ret; + unsigned int tmp; + int ret, err; size_t i; - u8 tmp; - ret = rv3029_eeprom_enter(dev); - if (ret < 0) - return ret; + err = rv3029_eeprom_enter(rv3029); + if (err < 0) + return err; for (i = 0; i < len; i++, reg++) { - ret = rv3029_read_regs(dev, reg, &tmp, 1); + ret = regmap_read(rv3029->regmap, reg, &tmp); if (ret < 0) break; if (tmp != buf[i]) { - ret = rv3029_write_regs(dev, reg, &buf[i], 1); + tmp = buf[i]; + ret = regmap_write(rv3029->regmap, reg, tmp); if (ret < 0) break; } - ret = rv3029_eeprom_busywait(dev); + ret = rv3029_eeprom_busywait(rv3029); if (ret < 0) break; } - ret = rv3029_eeprom_exit(dev); - if (ret < 0) - return ret; + err = rv3029_eeprom_exit(rv3029); + if (err < 0) + return err; - return 0; + return ret; } -static int rv3029_eeprom_update_bits(struct device *dev, +static int rv3029_eeprom_update_bits(struct rv3029_data *rv3029, u8 reg, u8 mask, u8 set) { u8 buf; int ret; - ret = rv3029_eeprom_read(dev, reg, &buf, 1); + ret = rv3029_eeprom_read(rv3029, reg, &buf, 1); if (ret < 0) return ret; buf &= ~mask; buf |= set & mask; - ret = rv3029_eeprom_write(dev, reg, &buf, 1); + ret = rv3029_eeprom_write(rv3029, reg, &buf, 1); if (ret < 0) return ret; @@ -330,20 +266,20 @@ static irqreturn_t rv3029_handle_irq(int irq, void *dev_id) struct device *dev = dev_id; struct rv3029_data *rv3029 = dev_get_drvdata(dev); struct mutex *lock = &rv3029->rtc->ops_lock; + unsigned int flags, controls; unsigned long events = 0; - u8 flags, controls; int ret; mutex_lock(lock); - ret = rv3029_read_regs(dev, RV3029_IRQ_CTRL, &controls, 1); + ret = regmap_read(rv3029->regmap, RV3029_IRQ_CTRL, &controls); if (ret) { dev_warn(dev, "Read IRQ Control Register error %d\n", ret); mutex_unlock(lock); return IRQ_NONE; } - ret = rv3029_read_regs(dev, RV3029_IRQ_FLAGS, &flags, 1); + ret = regmap_read(rv3029->regmap, RV3029_IRQ_FLAGS, &flags); if (ret) { dev_warn(dev, "Read IRQ Flags Register error %d\n", ret); mutex_unlock(lock); @@ -358,8 +294,8 @@ static irqreturn_t rv3029_handle_irq(int irq, void *dev_id) if (events) { rtc_update_irq(rv3029->rtc, 1, events); - rv3029_write_regs(dev, RV3029_IRQ_FLAGS, &flags, 1); - rv3029_write_regs(dev, RV3029_IRQ_CTRL, &controls, 1); + regmap_write(rv3029->regmap, RV3029_IRQ_FLAGS, flags); + regmap_write(rv3029->regmap, RV3029_IRQ_CTRL, controls); } mutex_unlock(lock); @@ -368,22 +304,22 @@ static irqreturn_t rv3029_handle_irq(int irq, void *dev_id) static int rv3029_read_time(struct device *dev, struct rtc_time *tm) { - u8 buf[1]; + struct rv3029_data *rv3029 = dev_get_drvdata(dev); + unsigned int sr; int ret; u8 regs[RV3029_WATCH_SECTION_LEN] = { 0, }; - ret = rv3029_get_sr(dev, buf); - if (ret < 0) { - dev_err(dev, "%s: reading SR failed\n", __func__); - return -EIO; - } + ret = regmap_read(rv3029->regmap, RV3029_STATUS, &sr); + if (ret < 0) + return ret; - ret = rv3029_read_regs(dev, RV3029_W_SEC, regs, + if (sr & (RV3029_STATUS_VLOW2 | RV3029_STATUS_PON)) + return -EINVAL; + + ret = regmap_bulk_read(rv3029->regmap, RV3029_W_SEC, regs, RV3029_WATCH_SECTION_LEN); - if (ret < 0) { - dev_err(dev, "%s: reading RTC section failed\n", __func__); + if (ret < 0) return ret; - } tm->tm_sec = bcd2bin(regs[RV3029_W_SEC - RV3029_W_SEC]); tm->tm_min = bcd2bin(regs[RV3029_W_MINUTES - RV3029_W_SEC]); @@ -411,34 +347,24 @@ static int rv3029_read_time(struct device *dev, struct rtc_time *tm) static int rv3029_read_alarm(struct device *dev, struct rtc_wkalrm *alarm) { + struct rv3029_data *rv3029 = dev_get_drvdata(dev); struct rtc_time *const tm = &alarm->time; + unsigned int controls, flags; int ret; - u8 regs[8], controls, flags; - - ret = rv3029_get_sr(dev, regs); - if (ret < 0) { - dev_err(dev, "%s: reading SR failed\n", __func__); - return -EIO; - } + u8 regs[8]; - ret = rv3029_read_regs(dev, RV3029_A_SC, regs, + ret = regmap_bulk_read(rv3029->regmap, RV3029_A_SC, regs, RV3029_ALARM_SECTION_LEN); - - if (ret < 0) { - dev_err(dev, "%s: reading alarm section failed\n", __func__); + if (ret < 0) return ret; - } - ret = rv3029_read_regs(dev, RV3029_IRQ_CTRL, &controls, 1); - if (ret) { - dev_err(dev, "Read IRQ Control Register error %d\n", ret); + ret = regmap_read(rv3029->regmap, RV3029_IRQ_CTRL, &controls); + if (ret) return ret; - } - ret = rv3029_read_regs(dev, RV3029_IRQ_FLAGS, &flags, 1); - if (ret < 0) { - dev_err(dev, "Read IRQ Flags Register error %d\n", ret); + + ret = regmap_read(rv3029->regmap, RV3029_IRQ_FLAGS, &flags); + if (ret < 0) return ret; - } tm->tm_sec = bcd2bin(regs[RV3029_A_SC - RV3029_A_SC] & 0x7f); tm->tm_min = bcd2bin(regs[RV3029_A_MN - RV3029_A_SC] & 0x7f); @@ -456,50 +382,20 @@ static int rv3029_read_alarm(struct device *dev, struct rtc_wkalrm *alarm) static int rv3029_alarm_irq_enable(struct device *dev, unsigned int enable) { - int ret; - u8 controls; - - ret = rv3029_read_regs(dev, RV3029_IRQ_CTRL, &controls, 1); - if (ret < 0) { - dev_warn(dev, "Read IRQ Control Register error %d\n", ret); - return ret; - } - - /* enable/disable AIE irq */ - if (enable) - controls |= RV3029_IRQ_CTRL_AIE; - else - controls &= ~RV3029_IRQ_CTRL_AIE; - - ret = rv3029_write_regs(dev, RV3029_IRQ_CTRL, &controls, 1); - if (ret < 0) { - dev_err(dev, "can't update INT reg\n"); - return ret; - } + struct rv3029_data *rv3029 = dev_get_drvdata(dev); - return 0; + return regmap_update_bits(rv3029->regmap, RV3029_IRQ_CTRL, + RV3029_IRQ_CTRL_AIE, + enable ? RV3029_IRQ_CTRL_AIE : 0); } static int rv3029_set_alarm(struct device *dev, struct rtc_wkalrm *alarm) { + struct rv3029_data *rv3029 = dev_get_drvdata(dev); struct rtc_time *const tm = &alarm->time; int ret; u8 regs[8]; - /* - * The clock has an 8 bit wide bcd-coded register (they never learn) - * for the year. tm_year is an offset from 1900 and we are interested - * in the 2000-2099 range, so any value less than 100 is invalid. - */ - if (tm->tm_year < 100) - return -EINVAL; - - ret = rv3029_get_sr(dev, regs); - if (ret < 0) { - dev_err(dev, "%s: reading SR failed\n", __func__); - return -EIO; - } - /* Activate all the alarms with AE_x bit */ regs[RV3029_A_SC - RV3029_A_SC] = bin2bcd(tm->tm_sec) | RV3029_A_AE_X; regs[RV3029_A_MN - RV3029_A_SC] = bin2bcd(tm->tm_min) | RV3029_A_AE_X; @@ -515,39 +411,20 @@ static int rv3029_set_alarm(struct device *dev, struct rtc_wkalrm *alarm) | RV3029_A_AE_X; /* Write the alarm */ - ret = rv3029_write_regs(dev, RV3029_A_SC, regs, + ret = regmap_bulk_write(rv3029->regmap, RV3029_A_SC, regs, RV3029_ALARM_SECTION_LEN); if (ret < 0) return ret; - if (alarm->enabled) { - /* enable AIE irq */ - ret = rv3029_alarm_irq_enable(dev, 1); - if (ret) - return ret; - } else { - /* disable AIE irq */ - ret = rv3029_alarm_irq_enable(dev, 0); - if (ret) - return ret; - } - - return 0; + return rv3029_alarm_irq_enable(dev, alarm->enabled); } static int rv3029_set_time(struct device *dev, struct rtc_time *tm) { + struct rv3029_data *rv3029 = dev_get_drvdata(dev); u8 regs[8]; int ret; - /* - * The clock has an 8 bit wide bcd-coded register (they never learn) - * for the year. tm_year is an offset from 1900 and we are interested - * in the 2000-2099 range, so any value less than 100 is invalid. - */ - if (tm->tm_year < 100) - return -EINVAL; - regs[RV3029_W_SEC - RV3029_W_SEC] = bin2bcd(tm->tm_sec); regs[RV3029_W_MINUTES - RV3029_W_SEC] = bin2bcd(tm->tm_min); regs[RV3029_W_HOURS - RV3029_W_SEC] = bin2bcd(tm->tm_hour); @@ -556,24 +433,55 @@ static int rv3029_set_time(struct device *dev, struct rtc_time *tm) regs[RV3029_W_DAYS - RV3029_W_SEC] = bin2bcd(tm->tm_wday + 1) & 0x7; regs[RV3029_W_YEARS - RV3029_W_SEC] = bin2bcd(tm->tm_year - 100); - ret = rv3029_write_regs(dev, RV3029_W_SEC, regs, + ret = regmap_bulk_write(rv3029->regmap, RV3029_W_SEC, regs, RV3029_WATCH_SECTION_LEN); if (ret < 0) return ret; - ret = rv3029_get_sr(dev, regs); - if (ret < 0) { - dev_err(dev, "%s: reading SR failed\n", __func__); - return ret; - } - /* clear PON bit */ - ret = rv3029_set_sr(dev, (regs[0] & ~RV3029_STATUS_PON)); - if (ret < 0) { - dev_err(dev, "%s: reading SR failed\n", __func__); - return ret; + /* clear PON and VLOW2 bits */ + return regmap_update_bits(rv3029->regmap, RV3029_STATUS, + RV3029_STATUS_PON | RV3029_STATUS_VLOW2, 0); +} + +static int rv3029_ioctl(struct device *dev, unsigned int cmd, unsigned long arg) +{ + struct rv3029_data *rv3029 = dev_get_drvdata(dev); + unsigned long vl = 0; + int sr, ret = 0; + + switch (cmd) { + case RTC_VL_READ: + ret = regmap_read(rv3029->regmap, RV3029_STATUS, &sr); + if (ret < 0) + return ret; + + if (sr & RV3029_STATUS_VLOW1) + vl = RTC_VL_ACCURACY_LOW; + + if (sr & (RV3029_STATUS_VLOW2 | RV3029_STATUS_PON)) + vl |= RTC_VL_DATA_INVALID; + + return put_user(vl, (unsigned int __user *)arg); + + case RTC_VL_CLR: + return regmap_update_bits(rv3029->regmap, RV3029_STATUS, + RV3029_STATUS_VLOW1, 0); + + default: + return -ENOIOCTLCMD; } +} - return 0; +static int rv3029_nvram_write(void *priv, unsigned int offset, void *val, + size_t bytes) +{ + return regmap_bulk_write(priv, RV3029_RAM_PAGE + offset, val, bytes); +} + +static int rv3029_nvram_read(void *priv, unsigned int offset, void *val, + size_t bytes) +{ + return regmap_bulk_read(priv, RV3029_RAM_PAGE + offset, val, bytes); } static const struct rv3029_trickle_tab_elem { @@ -635,6 +543,7 @@ static const struct rv3029_trickle_tab_elem { static void rv3029_trickle_config(struct device *dev) { + struct rv3029_data *rv3029 = dev_get_drvdata(dev); struct device_node *of_node = dev->of_node; const struct rv3029_trickle_tab_elem *elem; int i, err; @@ -661,7 +570,7 @@ static void rv3029_trickle_config(struct device *dev) "Trickle charger enabled at %d ohms resistance.\n", elem->r); } - err = rv3029_eeprom_update_bits(dev, RV3029_CONTROL_E2P_EECTRL, + err = rv3029_eeprom_update_bits(rv3029, RV3029_CONTROL_E2P_EECTRL, RV3029_TRICKLE_MASK, trickle_set_bits); if (err < 0) @@ -670,12 +579,12 @@ static void rv3029_trickle_config(struct device *dev) #ifdef CONFIG_RTC_DRV_RV3029_HWMON -static int rv3029_read_temp(struct device *dev, int *temp_mC) +static int rv3029_read_temp(struct rv3029_data *rv3029, int *temp_mC) { + unsigned int temp; int ret; - u8 temp; - ret = rv3029_read_regs(dev, RV3029_TEMP_PAGE, &temp, 1); + ret = regmap_read(rv3029->regmap, RV3029_TEMP_PAGE, &temp); if (ret < 0) return ret; @@ -688,9 +597,10 @@ static ssize_t rv3029_hwmon_show_temp(struct device *dev, struct device_attribute *attr, char *buf) { + struct rv3029_data *rv3029 = dev_get_drvdata(dev); int ret, temp_mC; - ret = rv3029_read_temp(dev, &temp_mC); + ret = rv3029_read_temp(rv3029, &temp_mC); if (ret < 0) return ret; @@ -702,9 +612,10 @@ static ssize_t rv3029_hwmon_set_update_interval(struct device *dev, const char *buf, size_t count) { + struct rv3029_data *rv3029 = dev_get_drvdata(dev); + unsigned int th_set_bits = 0; unsigned long interval_ms; int ret; - u8 th_set_bits = 0; ret = kstrtoul(buf, 10, &interval_ms); if (ret < 0) @@ -715,7 +626,7 @@ static ssize_t rv3029_hwmon_set_update_interval(struct device *dev, if (interval_ms >= 16000) th_set_bits |= RV3029_EECTRL_THP; } - ret = rv3029_eeprom_update_bits(dev, RV3029_CONTROL_E2P_EECTRL, + ret = rv3029_eeprom_update_bits(rv3029, RV3029_CONTROL_E2P_EECTRL, RV3029_EECTRL_THE | RV3029_EECTRL_THP, th_set_bits); if (ret < 0) @@ -728,10 +639,11 @@ static ssize_t rv3029_hwmon_show_update_interval(struct device *dev, struct device_attribute *attr, char *buf) { + struct rv3029_data *rv3029 = dev_get_drvdata(dev); int ret, interval_ms; u8 eectrl; - ret = rv3029_eeprom_read(dev, RV3029_CONTROL_E2P_EECTRL, + ret = rv3029_eeprom_read(rv3029, RV3029_CONTROL_E2P_EECTRL, &eectrl, 1); if (ret < 0) return ret; @@ -785,14 +697,23 @@ static void rv3029_hwmon_register(struct device *dev, const char *name) static struct rtc_class_ops rv3029_rtc_ops = { .read_time = rv3029_read_time, .set_time = rv3029_set_time, + .ioctl = rv3029_ioctl, }; static int rv3029_probe(struct device *dev, struct regmap *regmap, int irq, const char *name) { struct rv3029_data *rv3029; + struct nvmem_config nvmem_cfg = { + .name = "rv3029_nvram", + .word_size = 1, + .stride = 1, + .size = RV3029_RAM_SECTION_LEN, + .type = NVMEM_TYPE_BATTERY_BACKED, + .reg_read = rv3029_nvram_read, + .reg_write = rv3029_nvram_write, + }; int rc = 0; - u8 buf[1]; rv3029 = devm_kzalloc(dev, sizeof(*rv3029), GFP_KERNEL); if (!rv3029) @@ -803,21 +724,12 @@ static int rv3029_probe(struct device *dev, struct regmap *regmap, int irq, rv3029->dev = dev; dev_set_drvdata(dev, rv3029); - rc = rv3029_get_sr(dev, buf); - if (rc < 0) { - dev_err(dev, "reading status failed\n"); - return rc; - } - rv3029_trickle_config(dev); rv3029_hwmon_register(dev, name); - rv3029->rtc = devm_rtc_device_register(dev, name, &rv3029_rtc_ops, - THIS_MODULE); - if (IS_ERR(rv3029->rtc)) { - dev_err(dev, "unable to register the class device\n"); + rv3029->rtc = devm_rtc_allocate_device(dev); + if (IS_ERR(rv3029->rtc)) return PTR_ERR(rv3029->rtc); - } if (rv3029->irq > 0) { rc = devm_request_threaded_irq(dev, rv3029->irq, @@ -834,20 +746,48 @@ static int rv3029_probe(struct device *dev, struct regmap *regmap, int irq, } } + rv3029->rtc->ops = &rv3029_rtc_ops; + rv3029->rtc->range_min = RTC_TIMESTAMP_BEGIN_2000; + rv3029->rtc->range_max = RTC_TIMESTAMP_END_2079; + + rc = rtc_register_device(rv3029->rtc); + if (rc) + return rc; + + nvmem_cfg.priv = rv3029->regmap; + rtc_nvmem_register(rv3029->rtc, &nvmem_cfg); + return 0; } +static const struct regmap_range rv3029_holes_range[] = { + regmap_reg_range(0x05, 0x07), + regmap_reg_range(0x0f, 0x0f), + regmap_reg_range(0x17, 0x17), + regmap_reg_range(0x1a, 0x1f), + regmap_reg_range(0x21, 0x27), + regmap_reg_range(0x34, 0x37), +}; + +static const struct regmap_access_table rv3029_regs = { + .no_ranges = rv3029_holes_range, + .n_no_ranges = ARRAY_SIZE(rv3029_holes_range), +}; + +static const struct regmap_config config = { + .reg_bits = 8, + .val_bits = 8, + .rd_table = &rv3029_regs, + .wr_table = &rv3029_regs, + .max_register = 0x3f, +}; + #if IS_ENABLED(CONFIG_I2C) static int rv3029_i2c_probe(struct i2c_client *client, const struct i2c_device_id *id) { struct regmap *regmap; - static const struct regmap_config config = { - .reg_bits = 8, - .val_bits = 8, - }; - if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_I2C_BLOCK | I2C_FUNC_SMBUS_BYTE)) { dev_err(&client->dev, "Adapter does not support SMBUS_I2C_BLOCK or SMBUS_I2C_BYTE\n"); @@ -855,11 +795,8 @@ static int rv3029_i2c_probe(struct i2c_client *client, } regmap = devm_regmap_init_i2c(client, &config); - if (IS_ERR(regmap)) { - dev_err(&client->dev, "%s: regmap allocation failed: %ld\n", - __func__, PTR_ERR(regmap)); + if (IS_ERR(regmap)) return PTR_ERR(regmap); - } return rv3029_probe(&client->dev, regmap, client->irq, client->name); } @@ -873,24 +810,20 @@ MODULE_DEVICE_TABLE(i2c, rv3029_id); static const struct of_device_id rv3029_of_match[] = { { .compatible = "microcrystal,rv3029" }, - /* Backward compatibility only, do not use compatibles below: */ - { .compatible = "rv3029" }, - { .compatible = "rv3029c2" }, - { .compatible = "mc,rv3029c2" }, { } }; MODULE_DEVICE_TABLE(of, rv3029_of_match); static struct i2c_driver rv3029_driver = { .driver = { - .name = "rtc-rv3029c2", + .name = "rv3029", .of_match_table = of_match_ptr(rv3029_of_match), }, .probe = rv3029_i2c_probe, .id_table = rv3029_id, }; -static int rv3029_register_driver(void) +static int __init rv3029_register_driver(void) { return i2c_add_driver(&rv3029_driver); } @@ -902,7 +835,7 @@ static void rv3029_unregister_driver(void) #else -static int rv3029_register_driver(void) +static int __init rv3029_register_driver(void) { return 0; } @@ -917,18 +850,11 @@ static void rv3029_unregister_driver(void) static int rv3049_probe(struct spi_device *spi) { - static const struct regmap_config config = { - .reg_bits = 8, - .val_bits = 8, - }; struct regmap *regmap; regmap = devm_regmap_init_spi(spi, &config); - if (IS_ERR(regmap)) { - dev_err(&spi->dev, "%s: regmap allocation failed: %ld\n", - __func__, PTR_ERR(regmap)); + if (IS_ERR(regmap)) return PTR_ERR(regmap); - } return rv3029_probe(&spi->dev, regmap, spi->irq, "rv3049"); } @@ -940,24 +866,24 @@ static struct spi_driver rv3049_driver = { .probe = rv3049_probe, }; -static int rv3049_register_driver(void) +static int __init rv3049_register_driver(void) { return spi_register_driver(&rv3049_driver); } -static void rv3049_unregister_driver(void) +static void __exit rv3049_unregister_driver(void) { spi_unregister_driver(&rv3049_driver); } #else -static int rv3049_register_driver(void) +static int __init rv3049_register_driver(void) { return 0; } -static void rv3049_unregister_driver(void) +static void __exit rv3049_unregister_driver(void) { } @@ -968,16 +894,12 @@ static int __init rv30x9_init(void) int ret; ret = rv3029_register_driver(); - if (ret) { - pr_err("Failed to register rv3029 driver: %d\n", ret); + if (ret) return ret; - } ret = rv3049_register_driver(); - if (ret) { - pr_err("Failed to register rv3049 driver: %d\n", ret); + if (ret) rv3029_unregister_driver(); - } return ret; } diff --git a/drivers/rtc/rtc-rv8803.c b/drivers/rtc/rtc-rv8803.c index fc5243400108..93c3a6b627bd 100644 --- a/drivers/rtc/rtc-rv8803.c +++ b/drivers/rtc/rtc-rv8803.c @@ -411,6 +411,7 @@ static int rv8803_ioctl(struct device *dev, unsigned int cmd, unsigned long arg) { struct i2c_client *client = to_i2c_client(dev); struct rv8803_data *rv8803 = dev_get_drvdata(dev); + unsigned int vl = 0; int flags, ret = 0; switch (cmd) { @@ -419,18 +420,15 @@ static int rv8803_ioctl(struct device *dev, unsigned int cmd, unsigned long arg) if (flags < 0) return flags; - if (flags & RV8803_FLAG_V1F) + if (flags & RV8803_FLAG_V1F) { dev_warn(&client->dev, "Voltage low, temperature compensation stopped.\n"); + vl = RTC_VL_ACCURACY_LOW; + } if (flags & RV8803_FLAG_V2F) - dev_warn(&client->dev, "Voltage low, data loss detected.\n"); - - flags &= RV8803_FLAG_V1F | RV8803_FLAG_V2F; + vl |= RTC_VL_DATA_INVALID; - if (copy_to_user((void __user *)arg, &flags, sizeof(int))) - return -EFAULT; - - return 0; + return put_user(vl, (unsigned int __user *)arg); case RTC_VL_CLR: mutex_lock(&rv8803->flags_lock); @@ -440,7 +438,7 @@ static int rv8803_ioctl(struct device *dev, unsigned int cmd, unsigned long arg) return flags; } - flags &= ~(RV8803_FLAG_V1F | RV8803_FLAG_V2F); + flags &= ~RV8803_FLAG_V1F; ret = rv8803_write_reg(client, RV8803_FLAG, flags); mutex_unlock(&rv8803->flags_lock); if (ret) @@ -564,9 +562,8 @@ static int rv8803_probe(struct i2c_client *client, dev_warn(&client->dev, "An alarm maybe have been missed.\n"); rv8803->rtc = devm_rtc_allocate_device(&client->dev); - if (IS_ERR(rv8803->rtc)) { + if (IS_ERR(rv8803->rtc)) return PTR_ERR(rv8803->rtc); - } if (client->irq > 0) { err = devm_request_threaded_irq(&client->dev, client->irq, diff --git a/drivers/rtc/rtc-rx6110.c b/drivers/rtc/rtc-rx6110.c index 71e20a6bd387..3a9eb7043f01 100644 --- a/drivers/rtc/rtc-rx6110.c +++ b/drivers/rtc/rtc-rx6110.c @@ -1,17 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * Driver for the Epson RTC module RX-6110 SA * * Copyright(C) 2015 Pengutronix, Steffen Trumtrar <kernel@pengutronix.de> * Copyright(C) SEIKO EPSON CORPORATION 2013. All rights reserved. - * - * This driver software is distributed as is, without any warranty of any kind, - * either express or implied as further specified in the GNU Public License. - * This software may be used and distributed according to the terms of the GNU - * Public License, version 2 as published by the Free Software Foundation. - * See the file COPYING in the main directory of this archive for more details. - * - * You should have received a copy of the GNU General Public License along with - * this program. If not, see <http://www.gnu.org/licenses/>. */ #include <linux/bcd.h> @@ -370,11 +362,6 @@ static int rx6110_probe(struct spi_device *spi) return 0; } -static int rx6110_remove(struct spi_device *spi) -{ - return 0; -} - static const struct spi_device_id rx6110_id[] = { { "rx6110", 0 }, { } @@ -393,7 +380,6 @@ static struct spi_driver rx6110_driver = { .of_match_table = of_match_ptr(rx6110_spi_of_match), }, .probe = rx6110_probe, - .remove = rx6110_remove, .id_table = rx6110_id, }; diff --git a/drivers/rtc/rtc-rx8010.c b/drivers/rtc/rtc-rx8010.c index 8102469e27c0..fe010151ec8f 100644 --- a/drivers/rtc/rtc-rx8010.c +++ b/drivers/rtc/rtc-rx8010.c @@ -389,9 +389,8 @@ static int rx8010_alarm_irq_enable(struct device *dev, static int rx8010_ioctl(struct device *dev, unsigned int cmd, unsigned long arg) { - struct i2c_client *client = to_i2c_client(dev); struct rx8010_data *rx8010 = dev_get_drvdata(dev); - int ret, tmp; + int tmp; int flagreg; switch (cmd) { @@ -400,24 +399,8 @@ static int rx8010_ioctl(struct device *dev, unsigned int cmd, unsigned long arg) if (flagreg < 0) return flagreg; - tmp = !!(flagreg & RX8010_FLAG_VLF); - if (copy_to_user((void __user *)arg, &tmp, sizeof(int))) - return -EFAULT; - - return 0; - - case RTC_VL_CLR: - flagreg = i2c_smbus_read_byte_data(rx8010->client, RX8010_FLAG); - if (flagreg < 0) { - return flagreg; - } - - flagreg &= ~RX8010_FLAG_VLF; - ret = i2c_smbus_write_byte_data(client, RX8010_FLAG, flagreg); - if (ret < 0) - return ret; - - return 0; + tmp = flagreg & RX8010_FLAG_VLF ? RTC_VL_DATA_INVALID : 0; + return put_user(tmp, (unsigned int __user *)arg); default: return -ENOIOCTLCMD; @@ -482,7 +465,7 @@ static int rx8010_probe(struct i2c_client *client, rx8010->rtc->max_user_freq = 1; - return err; + return 0; } static struct i2c_driver rx8010_driver = { diff --git a/drivers/rtc/rtc-rx8025.c b/drivers/rtc/rtc-rx8025.c index b9bda10589e0..a24f85893f90 100644 --- a/drivers/rtc/rtc-rx8025.c +++ b/drivers/rtc/rtc-rx8025.c @@ -67,7 +67,6 @@ static const struct i2c_device_id rx8025_id[] = { MODULE_DEVICE_TABLE(i2c, rx8025_id); struct rx8025_data { - struct i2c_client *client; struct rtc_device *rtc; u8 ctrl1; }; @@ -103,10 +102,10 @@ static s32 rx8025_write_regs(const struct i2c_client *client, static int rx8025_check_validity(struct device *dev) { - struct rx8025_data *rx8025 = dev_get_drvdata(dev); + struct i2c_client *client = to_i2c_client(dev); int ctrl2; - ctrl2 = rx8025_read_reg(rx8025->client, RX8025_REG_CTRL2); + ctrl2 = rx8025_read_reg(client, RX8025_REG_CTRL2); if (ctrl2 < 0) return ctrl2; @@ -178,6 +177,7 @@ out: static int rx8025_get_time(struct device *dev, struct rtc_time *dt) { + struct i2c_client *client = to_i2c_client(dev); struct rx8025_data *rx8025 = dev_get_drvdata(dev); u8 date[7]; int err; @@ -186,7 +186,7 @@ static int rx8025_get_time(struct device *dev, struct rtc_time *dt) if (err) return err; - err = rx8025_read_regs(rx8025->client, RX8025_REG_SEC, 7, date); + err = rx8025_read_regs(client, RX8025_REG_SEC, 7, date); if (err) return err; @@ -211,6 +211,7 @@ static int rx8025_get_time(struct device *dev, struct rtc_time *dt) static int rx8025_set_time(struct device *dev, struct rtc_time *dt) { + struct i2c_client *client = to_i2c_client(dev); struct rx8025_data *rx8025 = dev_get_drvdata(dev); u8 date[7]; int ret; @@ -237,11 +238,11 @@ static int rx8025_set_time(struct device *dev, struct rtc_time *dt) dev_dbg(dev, "%s: write %7ph\n", __func__, date); - ret = rx8025_write_regs(rx8025->client, RX8025_REG_SEC, 7, date); + ret = rx8025_write_regs(client, RX8025_REG_SEC, 7, date); if (ret < 0) return ret; - return rx8025_reset_validity(rx8025->client); + return rx8025_reset_validity(client); } static int rx8025_init_client(struct i2c_client *client) @@ -251,7 +252,7 @@ static int rx8025_init_client(struct i2c_client *client) int need_clear = 0; int err; - err = rx8025_read_regs(rx8025->client, RX8025_REG_CTRL1, 2, ctrl); + err = rx8025_read_regs(client, RX8025_REG_CTRL1, 2, ctrl); if (err) goto out; @@ -280,8 +281,8 @@ out: /* Alarm support */ static int rx8025_read_alarm(struct device *dev, struct rtc_wkalrm *t) { + struct i2c_client *client = to_i2c_client(dev); struct rx8025_data *rx8025 = dev_get_drvdata(dev); - struct i2c_client *client = rx8025->client; u8 ald[2]; int ctrl2, err; @@ -347,18 +348,18 @@ static int rx8025_set_alarm(struct device *dev, struct rtc_wkalrm *t) if (rx8025->ctrl1 & RX8025_BIT_CTRL1_DALE) { rx8025->ctrl1 &= ~RX8025_BIT_CTRL1_DALE; - err = rx8025_write_reg(rx8025->client, RX8025_REG_CTRL1, + err = rx8025_write_reg(client, RX8025_REG_CTRL1, rx8025->ctrl1); if (err) return err; } - err = rx8025_write_regs(rx8025->client, RX8025_REG_ALDMIN, 2, ald); + err = rx8025_write_regs(client, RX8025_REG_ALDMIN, 2, ald); if (err) return err; if (t->enabled) { rx8025->ctrl1 |= RX8025_BIT_CTRL1_DALE; - err = rx8025_write_reg(rx8025->client, RX8025_REG_CTRL1, + err = rx8025_write_reg(client, RX8025_REG_CTRL1, rx8025->ctrl1); if (err) return err; @@ -369,6 +370,7 @@ static int rx8025_set_alarm(struct device *dev, struct rtc_wkalrm *t) static int rx8025_alarm_irq_enable(struct device *dev, unsigned int enabled) { + struct i2c_client *client = to_i2c_client(dev); struct rx8025_data *rx8025 = dev_get_drvdata(dev); u8 ctrl1; int err; @@ -381,7 +383,7 @@ static int rx8025_alarm_irq_enable(struct device *dev, unsigned int enabled) if (ctrl1 != rx8025->ctrl1) { rx8025->ctrl1 = ctrl1; - err = rx8025_write_reg(rx8025->client, RX8025_REG_CTRL1, + err = rx8025_write_reg(client, RX8025_REG_CTRL1, rx8025->ctrl1); if (err) return err; @@ -516,7 +518,6 @@ static int rx8025_probe(struct i2c_client *client, if (!rx8025) return -ENOMEM; - rx8025->client = client; i2c_set_clientdata(client, rx8025); err = rx8025_init_client(client); diff --git a/drivers/rtc/rtc-s35390a.c b/drivers/rtc/rtc-s35390a.c index 84806ff763cf..03672a246356 100644 --- a/drivers/rtc/rtc-s35390a.c +++ b/drivers/rtc/rtc-s35390a.c @@ -423,8 +423,6 @@ static const struct rtc_class_ops s35390a_rtc_ops = { .ioctl = s35390a_rtc_ioctl, }; -static struct i2c_driver s35390a_driver; - static int s35390a_probe(struct i2c_client *client, const struct i2c_device_id *id) { @@ -434,37 +432,36 @@ static int s35390a_probe(struct i2c_client *client, char buf, status1; struct device *dev = &client->dev; - if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) { - err = -ENODEV; - goto exit; - } + if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) + return -ENODEV; s35390a = devm_kzalloc(dev, sizeof(struct s35390a), GFP_KERNEL); - if (!s35390a) { - err = -ENOMEM; - goto exit; - } + if (!s35390a) + return -ENOMEM; s35390a->client[0] = client; i2c_set_clientdata(client, s35390a); /* This chip uses multiple addresses, use dummy devices for them */ for (i = 1; i < 8; ++i) { - s35390a->client[i] = i2c_new_dummy(client->adapter, - client->addr + i); - if (!s35390a->client[i]) { + s35390a->client[i] = devm_i2c_new_dummy_device(dev, + client->adapter, + client->addr + i); + if (IS_ERR(s35390a->client[i])) { dev_err(dev, "Address %02x unavailable\n", client->addr + i); - err = -EBUSY; - goto exit_dummy; + return PTR_ERR(s35390a->client[i]); } } + s35390a->rtc = devm_rtc_allocate_device(dev); + if (IS_ERR(s35390a->rtc)) + return PTR_ERR(s35390a->rtc); + err_read = s35390a_read_status(s35390a, &status1); if (err_read < 0) { - err = err_read; dev_err(dev, "error resetting chip\n"); - goto exit_dummy; + return err_read; } if (status1 & S35390A_FLAG_24H) @@ -478,25 +475,21 @@ static int s35390a_probe(struct i2c_client *client, err = s35390a_set_reg(s35390a, S35390A_CMD_STATUS2, &buf, 1); if (err < 0) { dev_err(dev, "error disabling alarm"); - goto exit_dummy; + return err; } } else { err = s35390a_disable_test_mode(s35390a); if (err < 0) { dev_err(dev, "error disabling test mode\n"); - goto exit_dummy; + return err; } } device_set_wakeup_capable(dev, 1); - s35390a->rtc = devm_rtc_device_register(dev, s35390a_driver.driver.name, - &s35390a_rtc_ops, THIS_MODULE); - - if (IS_ERR(s35390a->rtc)) { - err = PTR_ERR(s35390a->rtc); - goto exit_dummy; - } + s35390a->rtc->ops = &s35390a_rtc_ops; + s35390a->rtc->range_min = RTC_TIMESTAMP_BEGIN_2000; + s35390a->rtc->range_max = RTC_TIMESTAMP_END_2099; /* supports per-minute alarms only, therefore set uie_unsupported */ s35390a->rtc->uie_unsupported = 1; @@ -504,27 +497,7 @@ static int s35390a_probe(struct i2c_client *client, if (status1 & S35390A_FLAG_INT2) rtc_update_irq(s35390a->rtc, 1, RTC_AF); - return 0; - -exit_dummy: - for (i = 1; i < 8; ++i) - if (s35390a->client[i]) - i2c_unregister_device(s35390a->client[i]); - -exit: - return err; -} - -static int s35390a_remove(struct i2c_client *client) -{ - unsigned int i; - struct s35390a *s35390a = i2c_get_clientdata(client); - - for (i = 1; i < 8; ++i) - if (s35390a->client[i]) - i2c_unregister_device(s35390a->client[i]); - - return 0; + return rtc_register_device(s35390a->rtc); } static struct i2c_driver s35390a_driver = { @@ -533,7 +506,6 @@ static struct i2c_driver s35390a_driver = { .of_match_table = of_match_ptr(s35390a_of_match), }, .probe = s35390a_probe, - .remove = s35390a_remove, .id_table = s35390a_id, }; diff --git a/drivers/rtc/rtc-s3c.c b/drivers/rtc/rtc-s3c.c index 74bf6473a05d..e1b50e682fc4 100644 --- a/drivers/rtc/rtc-s3c.c +++ b/drivers/rtc/rtc-s3c.c @@ -444,7 +444,6 @@ static int s3c_rtc_probe(struct platform_device *pdev) { struct s3c_rtc *info = NULL; struct rtc_time rtc_tm; - struct resource *res; int ret; info = devm_kzalloc(&pdev->dev, sizeof(*info), GFP_KERNEL); @@ -453,10 +452,8 @@ static int s3c_rtc_probe(struct platform_device *pdev) /* find the IRQs */ info->irq_tick = platform_get_irq(pdev, 1); - if (info->irq_tick < 0) { - dev_err(&pdev->dev, "no irq for rtc tick\n"); + if (info->irq_tick < 0) return info->irq_tick; - } info->dev = &pdev->dev; info->data = of_device_get_match_data(&pdev->dev); @@ -470,17 +467,14 @@ static int s3c_rtc_probe(struct platform_device *pdev) platform_set_drvdata(pdev, info); info->irq_alarm = platform_get_irq(pdev, 0); - if (info->irq_alarm < 0) { - dev_err(&pdev->dev, "no irq for alarm\n"); + if (info->irq_alarm < 0) return info->irq_alarm; - } dev_dbg(&pdev->dev, "s3c2410_rtc: tick irq %d, alarm irq %d\n", info->irq_tick, info->irq_alarm); /* get the memory region */ - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - info->base = devm_ioremap_resource(&pdev->dev, res); + info->base = devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(info->base)) return PTR_ERR(info->base); diff --git a/drivers/rtc/rtc-s5m.c b/drivers/rtc/rtc-s5m.c index c7f1bf823ea0..eb9dde4095a9 100644 --- a/drivers/rtc/rtc-s5m.c +++ b/drivers/rtc/rtc-s5m.c @@ -760,10 +760,10 @@ static int s5m_rtc_probe(struct platform_device *pdev) return -ENODEV; } - info->i2c = i2c_new_dummy(s5m87xx->i2c->adapter, RTC_I2C_ADDR); - if (!info->i2c) { + info->i2c = i2c_new_dummy_device(s5m87xx->i2c->adapter, RTC_I2C_ADDR); + if (IS_ERR(info->i2c)) { dev_err(&pdev->dev, "Failed to allocate I2C for RTC\n"); - return -ENODEV; + return PTR_ERR(info->i2c); } info->regmap = devm_regmap_init_i2c(info->i2c, regmap_cfg); diff --git a/drivers/rtc/rtc-sa1100.c b/drivers/rtc/rtc-sa1100.c index 86fa723b3b76..d37893f6eaee 100644 --- a/drivers/rtc/rtc-sa1100.c +++ b/drivers/rtc/rtc-sa1100.c @@ -252,7 +252,6 @@ EXPORT_SYMBOL_GPL(sa1100_rtc_init); static int sa1100_rtc_probe(struct platform_device *pdev) { struct sa1100_rtc *info; - struct resource *iores; void __iomem *base; int irq_1hz, irq_alarm; int ret; @@ -281,8 +280,7 @@ static int sa1100_rtc_probe(struct platform_device *pdev) return ret; } - iores = platform_get_resource(pdev, IORESOURCE_MEM, 0); - base = devm_ioremap_resource(&pdev->dev, iores); + base = devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(base)) return PTR_ERR(base); diff --git a/drivers/rtc/rtc-sc27xx.c b/drivers/rtc/rtc-sc27xx.c index b4eb3b3c6c2c..36810dd40cd3 100644 --- a/drivers/rtc/rtc-sc27xx.c +++ b/drivers/rtc/rtc-sc27xx.c @@ -138,7 +138,7 @@ static int sprd_rtc_lock_alarm(struct sprd_rtc *rtc, bool lock) if (ret) return ret; - val &= ~(SPRD_RTC_ALMLOCK_MASK | SPRD_RTC_POWEROFF_ALM_FLAG); + val &= ~SPRD_RTC_ALMLOCK_MASK; if (lock) val |= SPRD_RTC_ALM_LOCK; else @@ -614,10 +614,8 @@ static int sprd_rtc_probe(struct platform_device *pdev) } rtc->irq = platform_get_irq(pdev, 0); - if (rtc->irq < 0) { - dev_err(&pdev->dev, "failed to get RTC irq number\n"); + if (rtc->irq < 0) return rtc->irq; - } rtc->rtc = devm_rtc_allocate_device(&pdev->dev); if (IS_ERR(rtc->rtc)) @@ -656,7 +654,6 @@ static int sprd_rtc_probe(struct platform_device *pdev) rtc->rtc->range_max = 5662310399LL; ret = rtc_register_device(rtc->rtc); if (ret) { - dev_err(&pdev->dev, "failed to register rtc device\n"); device_init_wakeup(&pdev->dev, 0); return ret; } @@ -664,12 +661,6 @@ static int sprd_rtc_probe(struct platform_device *pdev) return 0; } -static int sprd_rtc_remove(struct platform_device *pdev) -{ - device_init_wakeup(&pdev->dev, 0); - return 0; -} - static const struct of_device_id sprd_rtc_of_match[] = { { .compatible = "sprd,sc2731-rtc", }, { }, @@ -682,7 +673,6 @@ static struct platform_driver sprd_rtc_driver = { .of_match_table = sprd_rtc_of_match, }, .probe = sprd_rtc_probe, - .remove = sprd_rtc_remove, }; module_platform_driver(sprd_rtc_driver); diff --git a/drivers/rtc/rtc-sd3078.c b/drivers/rtc/rtc-sd3078.c index 42cb90db7f94..a7aa943c1183 100644 --- a/drivers/rtc/rtc-sd3078.c +++ b/drivers/rtc/rtc-sd3078.c @@ -193,10 +193,8 @@ static int sd3078_probe(struct i2c_client *client, sd3078->rtc->range_max = RTC_TIMESTAMP_END_2099; ret = rtc_register_device(sd3078->rtc); - if (ret) { - dev_err(&client->dev, "failed to register rtc device\n"); + if (ret) return ret; - } sd3078_enable_reg_write(sd3078); diff --git a/drivers/rtc/rtc-sh.c b/drivers/rtc/rtc-sh.c index 579b3ff5c644..feb1f8e52c00 100644 --- a/drivers/rtc/rtc-sh.c +++ b/drivers/rtc/rtc-sh.c @@ -504,7 +504,7 @@ static int __init sh_rtc_probe(struct platform_device *pdev) if (unlikely(!rtc->res)) return -EBUSY; - rtc->regbase = devm_ioremap_nocache(&pdev->dev, rtc->res->start, + rtc->regbase = devm_ioremap(&pdev->dev, rtc->res->start, rtc->regsize); if (unlikely(!rtc->regbase)) return -EINVAL; diff --git a/drivers/rtc/rtc-sirfsoc.c b/drivers/rtc/rtc-sirfsoc.c index c759c55359a1..a2c9c55667cd 100644 --- a/drivers/rtc/rtc-sirfsoc.c +++ b/drivers/rtc/rtc-sirfsoc.c @@ -365,13 +365,6 @@ static int sirfsoc_rtc_probe(struct platform_device *pdev) return 0; } -static int sirfsoc_rtc_remove(struct platform_device *pdev) -{ - device_init_wakeup(&pdev->dev, 0); - - return 0; -} - #ifdef CONFIG_PM_SLEEP static int sirfsoc_rtc_suspend(struct device *dev) { @@ -450,7 +443,6 @@ static struct platform_driver sirfsoc_rtc_driver = { .of_match_table = sirfsoc_rtc_of_match, }, .probe = sirfsoc_rtc_probe, - .remove = sirfsoc_rtc_remove, }; module_platform_driver(sirfsoc_rtc_driver); diff --git a/drivers/rtc/rtc-snvs.c b/drivers/rtc/rtc-snvs.c index 7ee673a25fd0..757f4daa7181 100644 --- a/drivers/rtc/rtc-snvs.c +++ b/drivers/rtc/rtc-snvs.c @@ -151,7 +151,7 @@ static int snvs_rtc_read_time(struct device *dev, struct rtc_time *tm) struct snvs_rtc_data *data = dev_get_drvdata(dev); unsigned long time = rtc_read_lp_counter(data); - rtc_time_to_tm(time, tm); + rtc_time64_to_tm(time, tm); return 0; } @@ -159,11 +159,9 @@ static int snvs_rtc_read_time(struct device *dev, struct rtc_time *tm) static int snvs_rtc_set_time(struct device *dev, struct rtc_time *tm) { struct snvs_rtc_data *data = dev_get_drvdata(dev); - unsigned long time; + unsigned long time = rtc_tm_to_time64(tm); int ret; - rtc_tm_to_time(tm, &time); - /* Disable RTC first */ ret = snvs_rtc_enable(data, false); if (ret) @@ -185,7 +183,7 @@ static int snvs_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm) u32 lptar, lpsr; regmap_read(data->regmap, data->offset + SNVS_LPTAR, &lptar); - rtc_time_to_tm(lptar, &alrm->time); + rtc_time64_to_tm(lptar, &alrm->time); regmap_read(data->regmap, data->offset + SNVS_LPSR, &lpsr); alrm->pending = (lpsr & SNVS_LPSR_LPTA) ? 1 : 0; @@ -207,12 +205,9 @@ static int snvs_rtc_alarm_irq_enable(struct device *dev, unsigned int enable) static int snvs_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm) { struct snvs_rtc_data *data = dev_get_drvdata(dev); - struct rtc_time *alrm_tm = &alrm->time; - unsigned long time; + unsigned long time = rtc_tm_to_time64(&alrm->time); int ret; - rtc_tm_to_time(alrm_tm, &time); - regmap_update_bits(data->regmap, data->offset + SNVS_LPCR, SNVS_LPCR_LPTA_EN, 0); ret = rtc_write_sync_lp(data); if (ret) @@ -279,6 +274,10 @@ static int snvs_rtc_probe(struct platform_device *pdev) if (!data) return -ENOMEM; + data->rtc = devm_rtc_allocate_device(&pdev->dev); + if (IS_ERR(data->rtc)) + return PTR_ERR(data->rtc); + data->regmap = syscon_regmap_lookup_by_phandle(pdev->dev.of_node, "regmap"); if (IS_ERR(data->regmap)) { @@ -343,10 +342,10 @@ static int snvs_rtc_probe(struct platform_device *pdev) goto error_rtc_device_register; } - data->rtc = devm_rtc_device_register(&pdev->dev, pdev->name, - &snvs_rtc_ops, THIS_MODULE); - if (IS_ERR(data->rtc)) { - ret = PTR_ERR(data->rtc); + data->rtc->ops = &snvs_rtc_ops; + data->rtc->range_max = U32_MAX; + ret = rtc_register_device(data->rtc); + if (ret) { dev_err(&pdev->dev, "failed to register rtc: %d\n", ret); goto error_rtc_device_register; } diff --git a/drivers/rtc/rtc-spear.c b/drivers/rtc/rtc-spear.c index 0567944fd4f8..833daeb7b60e 100644 --- a/drivers/rtc/rtc-spear.c +++ b/drivers/rtc/rtc-spear.c @@ -347,7 +347,6 @@ static const struct rtc_class_ops spear_rtc_ops = { static int spear_rtc_probe(struct platform_device *pdev) { - struct resource *res; struct spear_rtc_config *config; int status = 0; int irq; @@ -358,10 +357,8 @@ static int spear_rtc_probe(struct platform_device *pdev) /* alarm irqs */ irq = platform_get_irq(pdev, 0); - if (irq < 0) { - dev_err(&pdev->dev, "no update irq?\n"); + if (irq < 0) return irq; - } status = devm_request_irq(&pdev->dev, irq, spear_rtc_irq, 0, pdev->name, config); @@ -371,8 +368,7 @@ static int spear_rtc_probe(struct platform_device *pdev) return status; } - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - config->ioaddr = devm_ioremap_resource(&pdev->dev, res); + config->ioaddr = devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(config->ioaddr)) return PTR_ERR(config->ioaddr); diff --git a/drivers/rtc/rtc-st-lpc.c b/drivers/rtc/rtc-st-lpc.c index 49474a31c66d..51041dc08af4 100644 --- a/drivers/rtc/rtc-st-lpc.c +++ b/drivers/rtc/rtc-st-lpc.c @@ -41,7 +41,6 @@ struct st_rtc { struct rtc_device *rtc_dev; struct rtc_wkalrm alarm; - struct resource *res; struct clk *clk; unsigned long clkrate; void __iomem *ioaddr; @@ -186,7 +185,6 @@ static int st_rtc_probe(struct platform_device *pdev) { struct device_node *np = pdev->dev.of_node; struct st_rtc *rtc; - struct resource *res; uint32_t mode; int ret = 0; @@ -210,8 +208,7 @@ static int st_rtc_probe(struct platform_device *pdev) spin_lock_init(&rtc->lock); - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - rtc->ioaddr = devm_ioremap_resource(&pdev->dev, res); + rtc->ioaddr = devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(rtc->ioaddr)) return PTR_ERR(rtc->ioaddr); diff --git a/drivers/rtc/rtc-stk17ta8.c b/drivers/rtc/rtc-stk17ta8.c index a833ebc4ecb9..01a45044f468 100644 --- a/drivers/rtc/rtc-stk17ta8.c +++ b/drivers/rtc/rtc-stk17ta8.c @@ -256,7 +256,6 @@ static int stk17ta8_nvram_write(void *priv, unsigned int pos, void *val, static int stk17ta8_rtc_probe(struct platform_device *pdev) { - struct resource *res; unsigned int cal; unsigned int flags; struct rtc_plat_data *pdata; @@ -275,8 +274,7 @@ static int stk17ta8_rtc_probe(struct platform_device *pdev) if (!pdata) return -ENOMEM; - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - ioaddr = devm_ioremap_resource(&pdev->dev, res); + ioaddr = devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(ioaddr)) return PTR_ERR(ioaddr); pdata->ioaddr = ioaddr; diff --git a/drivers/rtc/rtc-stm32.c b/drivers/rtc/rtc-stm32.c index 773a1990b93f..d774aa18f57a 100644 --- a/drivers/rtc/rtc-stm32.c +++ b/drivers/rtc/rtc-stm32.c @@ -693,15 +693,13 @@ static int stm32_rtc_probe(struct platform_device *pdev) { struct stm32_rtc *rtc; const struct stm32_rtc_registers *regs; - struct resource *res; int ret; rtc = devm_kzalloc(&pdev->dev, sizeof(*rtc), GFP_KERNEL); if (!rtc) return -ENOMEM; - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - rtc->base = devm_ioremap_resource(&pdev->dev, res); + rtc->base = devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(rtc->base)) return PTR_ERR(rtc->base); @@ -776,7 +774,6 @@ static int stm32_rtc_probe(struct platform_device *pdev) rtc->irq_alarm = platform_get_irq(pdev, 0); if (rtc->irq_alarm <= 0) { - dev_err(&pdev->dev, "no alarm irq\n"); ret = rtc->irq_alarm; goto err; } @@ -900,8 +897,11 @@ static int stm32_rtc_resume(struct device *dev) } ret = stm32_rtc_wait_sync(rtc); - if (ret < 0) + if (ret < 0) { + if (rtc->data->has_pclk) + clk_disable_unprepare(rtc->pclk); return ret; + } if (device_may_wakeup(dev)) return disable_irq_wake(rtc->irq_alarm); diff --git a/drivers/rtc/rtc-sun6i.c b/drivers/rtc/rtc-sun6i.c index c0e75c373605..852f5f3b3592 100644 --- a/drivers/rtc/rtc-sun6i.c +++ b/drivers/rtc/rtc-sun6i.c @@ -32,9 +32,11 @@ /* Control register */ #define SUN6I_LOSC_CTRL 0x0000 #define SUN6I_LOSC_CTRL_KEY (0x16aa << 16) +#define SUN6I_LOSC_CTRL_AUTO_SWT_BYPASS BIT(15) #define SUN6I_LOSC_CTRL_ALM_DHMS_ACC BIT(9) #define SUN6I_LOSC_CTRL_RTC_HMS_ACC BIT(8) #define SUN6I_LOSC_CTRL_RTC_YMD_ACC BIT(7) +#define SUN6I_LOSC_CTRL_EXT_LOSC_EN BIT(4) #define SUN6I_LOSC_CTRL_EXT_OSC BIT(0) #define SUN6I_LOSC_CTRL_ACC_MASK GENMASK(9, 7) @@ -128,11 +130,12 @@ struct sun6i_rtc_clk_data { unsigned int has_prescaler : 1; unsigned int has_out_clk : 1; unsigned int export_iosc : 1; + unsigned int has_losc_en : 1; + unsigned int has_auto_swt : 1; }; struct sun6i_rtc_dev { struct rtc_device *rtc; - struct device *dev; const struct sun6i_rtc_clk_data *data; void __iomem *base; int irq; @@ -190,6 +193,10 @@ static int sun6i_rtc_osc_set_parent(struct clk_hw *hw, u8 index) val &= ~SUN6I_LOSC_CTRL_EXT_OSC; val |= SUN6I_LOSC_CTRL_KEY; val |= index ? SUN6I_LOSC_CTRL_EXT_OSC : 0; + if (rtc->data->has_losc_en) { + val &= ~SUN6I_LOSC_CTRL_EXT_LOSC_EN; + val |= index ? SUN6I_LOSC_CTRL_EXT_LOSC_EN : 0; + } writel(val, rtc->base + SUN6I_LOSC_CTRL); spin_unlock_irqrestore(&rtc->lock, flags); @@ -215,6 +222,7 @@ static void __init sun6i_rtc_clk_init(struct device_node *node, const char *iosc_name = "rtc-int-osc"; const char *clkout_name = "osc32k-out"; const char *parents[2]; + u32 reg; rtc = kzalloc(sizeof(*rtc), GFP_KERNEL); if (!rtc) @@ -235,9 +243,18 @@ static void __init sun6i_rtc_clk_init(struct device_node *node, goto err; } + reg = SUN6I_LOSC_CTRL_KEY; + if (rtc->data->has_auto_swt) { + /* Bypass auto-switch to int osc, on ext losc failure */ + reg |= SUN6I_LOSC_CTRL_AUTO_SWT_BYPASS; + writel(reg, rtc->base + SUN6I_LOSC_CTRL); + } + /* Switch to the external, more precise, oscillator */ - writel(SUN6I_LOSC_CTRL_KEY | SUN6I_LOSC_CTRL_EXT_OSC, - rtc->base + SUN6I_LOSC_CTRL); + reg |= SUN6I_LOSC_CTRL_EXT_OSC; + if (rtc->data->has_losc_en) + reg |= SUN6I_LOSC_CTRL_EXT_LOSC_EN; + writel(reg, rtc->base + SUN6I_LOSC_CTRL); /* Yes, I know, this is ugly. */ sun6i_rtc = rtc; @@ -279,7 +296,7 @@ static void __init sun6i_rtc_clk_init(struct device_node *node, of_property_read_string_index(node, "clock-output-names", 1, &clkout_name); - rtc->ext_losc = clk_register_gate(NULL, clkout_name, rtc->hw.init->name, + rtc->ext_losc = clk_register_gate(NULL, clkout_name, init.name, 0, rtc->base + SUN6I_LOSC_OUT_GATING, SUN6I_LOSC_OUT_GATING_EN_OFFSET, 0, &rtc->lock); @@ -345,6 +362,39 @@ CLK_OF_DECLARE_DRIVER(sun8i_h3_rtc_clk, "allwinner,sun8i-h3-rtc", CLK_OF_DECLARE_DRIVER(sun50i_h5_rtc_clk, "allwinner,sun50i-h5-rtc", sun8i_h3_rtc_clk_init); +static const struct sun6i_rtc_clk_data sun50i_h6_rtc_data = { + .rc_osc_rate = 16000000, + .fixed_prescaler = 32, + .has_prescaler = 1, + .has_out_clk = 1, + .export_iosc = 1, + .has_losc_en = 1, + .has_auto_swt = 1, +}; + +static void __init sun50i_h6_rtc_clk_init(struct device_node *node) +{ + sun6i_rtc_clk_init(node, &sun50i_h6_rtc_data); +} +CLK_OF_DECLARE_DRIVER(sun50i_h6_rtc_clk, "allwinner,sun50i-h6-rtc", + sun50i_h6_rtc_clk_init); + +/* + * The R40 user manual is self-conflicting on whether the prescaler is + * fixed or configurable. The clock diagram shows it as fixed, but there + * is also a configurable divider in the RTC block. + */ +static const struct sun6i_rtc_clk_data sun8i_r40_rtc_data = { + .rc_osc_rate = 16000000, + .fixed_prescaler = 512, +}; +static void __init sun8i_r40_rtc_clk_init(struct device_node *node) +{ + sun6i_rtc_clk_init(node, &sun8i_r40_rtc_data); +} +CLK_OF_DECLARE_DRIVER(sun8i_r40_rtc_clk, "allwinner,sun8i-r40-rtc", + sun8i_r40_rtc_clk_init); + static const struct sun6i_rtc_clk_data sun8i_v3_rtc_data = { .rc_osc_rate = 32000, .has_out_clk = 1, @@ -598,6 +648,33 @@ static const struct rtc_class_ops sun6i_rtc_ops = { .alarm_irq_enable = sun6i_rtc_alarm_irq_enable }; +#ifdef CONFIG_PM_SLEEP +/* Enable IRQ wake on suspend, to wake up from RTC. */ +static int sun6i_rtc_suspend(struct device *dev) +{ + struct sun6i_rtc_dev *chip = dev_get_drvdata(dev); + + if (device_may_wakeup(dev)) + enable_irq_wake(chip->irq); + + return 0; +} + +/* Disable IRQ wake on resume. */ +static int sun6i_rtc_resume(struct device *dev) +{ + struct sun6i_rtc_dev *chip = dev_get_drvdata(dev); + + if (device_may_wakeup(dev)) + disable_irq_wake(chip->irq); + + return 0; +} +#endif + +static SIMPLE_DEV_PM_OPS(sun6i_rtc_pm_ops, + sun6i_rtc_suspend, sun6i_rtc_resume); + static int sun6i_rtc_probe(struct platform_device *pdev) { struct sun6i_rtc_dev *chip = sun6i_rtc; @@ -607,13 +684,10 @@ static int sun6i_rtc_probe(struct platform_device *pdev) return -ENODEV; platform_set_drvdata(pdev, chip); - chip->dev = &pdev->dev; chip->irq = platform_get_irq(pdev, 0); - if (chip->irq < 0) { - dev_err(&pdev->dev, "No IRQ resource\n"); + if (chip->irq < 0) return chip->irq; - } ret = devm_request_irq(&pdev->dev, chip->irq, sun6i_rtc_alarmirq, 0, dev_name(&pdev->dev), chip); @@ -650,6 +724,8 @@ static int sun6i_rtc_probe(struct platform_device *pdev) clk_prepare_enable(chip->losc); + device_init_wakeup(&pdev->dev, 1); + chip->rtc = devm_rtc_device_register(&pdev->dev, "rtc-sun6i", &sun6i_rtc_ops, THIS_MODULE); if (IS_ERR(chip->rtc)) { @@ -675,6 +751,7 @@ static const struct of_device_id sun6i_rtc_dt_ids[] = { { .compatible = "allwinner,sun8i-r40-rtc" }, { .compatible = "allwinner,sun8i-v3-rtc" }, { .compatible = "allwinner,sun50i-h5-rtc" }, + { .compatible = "allwinner,sun50i-h6-rtc" }, { /* sentinel */ }, }; MODULE_DEVICE_TABLE(of, sun6i_rtc_dt_ids); @@ -684,6 +761,7 @@ static struct platform_driver sun6i_rtc_driver = { .driver = { .name = "sun6i-rtc", .of_match_table = sun6i_rtc_dt_ids, + .pm = &sun6i_rtc_pm_ops, }, }; builtin_platform_driver(sun6i_rtc_driver); diff --git a/drivers/rtc/rtc-sunxi.c b/drivers/rtc/rtc-sunxi.c index 6eeabb81106f..f5d7f44550ce 100644 --- a/drivers/rtc/rtc-sunxi.c +++ b/drivers/rtc/rtc-sunxi.c @@ -422,7 +422,6 @@ MODULE_DEVICE_TABLE(of, sunxi_rtc_dt_ids); static int sunxi_rtc_probe(struct platform_device *pdev) { struct sunxi_rtc_dev *chip; - struct resource *res; int ret; chip = devm_kzalloc(&pdev->dev, sizeof(*chip), GFP_KERNEL); @@ -436,16 +435,13 @@ static int sunxi_rtc_probe(struct platform_device *pdev) if (IS_ERR(chip->rtc)) return PTR_ERR(chip->rtc); - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - chip->base = devm_ioremap_resource(&pdev->dev, res); + chip->base = devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(chip->base)) return PTR_ERR(chip->base); chip->irq = platform_get_irq(pdev, 0); - if (chip->irq < 0) { - dev_err(&pdev->dev, "No IRQ resource\n"); + if (chip->irq < 0) return chip->irq; - } ret = devm_request_irq(&pdev->dev, chip->irq, sunxi_rtc_alarmirq, 0, dev_name(&pdev->dev), chip); if (ret) { @@ -474,15 +470,7 @@ static int sunxi_rtc_probe(struct platform_device *pdev) chip->rtc->ops = &sunxi_rtc_ops; - ret = rtc_register_device(chip->rtc); - if (ret) { - dev_err(&pdev->dev, "unable to register device\n"); - return ret; - } - - dev_info(&pdev->dev, "RTC enabled\n"); - - return 0; + return rtc_register_device(chip->rtc); } static struct platform_driver sunxi_rtc_driver = { diff --git a/drivers/rtc/rtc-tegra.c b/drivers/rtc/rtc-tegra.c index 8fa1b3febf69..7fbb1741692f 100644 --- a/drivers/rtc/rtc-tegra.c +++ b/drivers/rtc/rtc-tegra.c @@ -103,7 +103,7 @@ static int tegra_rtc_read_time(struct device *dev, struct rtc_time *tm) { struct tegra_rtc_info *info = dev_get_drvdata(dev); unsigned long flags; - u32 sec, msec; + u32 sec; /* * RTC hardware copies seconds to shadow seconds when a read of @@ -111,7 +111,7 @@ static int tegra_rtc_read_time(struct device *dev, struct rtc_time *tm) */ spin_lock_irqsave(&info->lock, flags); - msec = readl(info->base + TEGRA_RTC_REG_MILLI_SECONDS); + readl(info->base + TEGRA_RTC_REG_MILLI_SECONDS); sec = readl(info->base + TEGRA_RTC_REG_SHADOW_SECONDS); spin_unlock_irqrestore(&info->lock, flags); @@ -277,23 +277,19 @@ MODULE_DEVICE_TABLE(of, tegra_rtc_dt_match); static int tegra_rtc_probe(struct platform_device *pdev) { struct tegra_rtc_info *info; - struct resource *res; int ret; info = devm_kzalloc(&pdev->dev, sizeof(*info), GFP_KERNEL); if (!info) return -ENOMEM; - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - info->base = devm_ioremap_resource(&pdev->dev, res); + info->base = devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(info->base)) return PTR_ERR(info->base); ret = platform_get_irq(pdev, 0); - if (ret <= 0) { - dev_err(&pdev->dev, "failed to get platform IRQ: %d\n", ret); + if (ret <= 0) return ret; - } info->irq = ret; @@ -334,10 +330,8 @@ static int tegra_rtc_probe(struct platform_device *pdev) } ret = rtc_register_device(info->rtc); - if (ret) { - dev_err(&pdev->dev, "failed to register device: %d\n", ret); + if (ret) goto disable_clk; - } dev_notice(&pdev->dev, "Tegra internal Real Time Clock\n"); diff --git a/drivers/rtc/rtc-tps6586x.c b/drivers/rtc/rtc-tps6586x.c index d6434e514a52..e39af2d67051 100644 --- a/drivers/rtc/rtc-tps6586x.c +++ b/drivers/rtc/rtc-tps6586x.c @@ -23,6 +23,7 @@ #include <linux/device.h> #include <linux/err.h> #include <linux/init.h> +#include <linux/irq.h> #include <linux/kernel.h> #include <linux/mfd/tps6586x.h> #include <linux/module.h> @@ -259,7 +260,6 @@ static int tps6586x_rtc_probe(struct platform_device *pdev) rtc->rtc = devm_rtc_allocate_device(&pdev->dev); if (IS_ERR(rtc->rtc)) { ret = PTR_ERR(rtc->rtc); - dev_err(&pdev->dev, "RTC allocate device: ret %d\n", ret); goto fail_rtc_register; } @@ -268,6 +268,8 @@ static int tps6586x_rtc_probe(struct platform_device *pdev) rtc->rtc->start_secs = mktime64(2009, 1, 1, 0, 0, 0); rtc->rtc->set_start_time = true; + irq_set_status_flags(rtc->irq, IRQ_NOAUTOEN); + ret = devm_request_threaded_irq(&pdev->dev, rtc->irq, NULL, tps6586x_rtc_irq, IRQF_ONESHOT, @@ -277,13 +279,10 @@ static int tps6586x_rtc_probe(struct platform_device *pdev) rtc->irq, ret); goto fail_rtc_register; } - disable_irq(rtc->irq); ret = rtc_register_device(rtc->rtc); - if (ret) { - dev_err(&pdev->dev, "RTC device register: ret %d\n", ret); + if (ret) goto fail_rtc_register; - } return 0; diff --git a/drivers/rtc/rtc-tps65910.c b/drivers/rtc/rtc-tps65910.c index 7078f6da1cbc..e3840386f430 100644 --- a/drivers/rtc/rtc-tps65910.c +++ b/drivers/rtc/rtc-tps65910.c @@ -361,6 +361,13 @@ static const struct rtc_class_ops tps65910_rtc_ops = { .set_offset = tps65910_set_offset, }; +static const struct rtc_class_ops tps65910_rtc_ops_noirq = { + .read_time = tps65910_rtc_read_time, + .set_time = tps65910_rtc_set_time, + .read_offset = tps65910_read_offset, + .set_offset = tps65910_set_offset, +}; + static int tps65910_rtc_probe(struct platform_device *pdev) { struct tps65910 *tps65910 = NULL; @@ -414,24 +421,20 @@ static int tps65910_rtc_probe(struct platform_device *pdev) ret = devm_request_threaded_irq(&pdev->dev, irq, NULL, tps65910_rtc_interrupt, IRQF_TRIGGER_LOW, dev_name(&pdev->dev), &pdev->dev); - if (ret < 0) { - dev_err(&pdev->dev, "IRQ is not free.\n"); - return ret; - } + if (ret < 0) + irq = -1; + tps_rtc->irq = irq; - device_set_wakeup_capable(&pdev->dev, 1); + if (irq != -1) { + device_set_wakeup_capable(&pdev->dev, 1); + tps_rtc->rtc->ops = &tps65910_rtc_ops; + } else + tps_rtc->rtc->ops = &tps65910_rtc_ops_noirq; - tps_rtc->rtc->ops = &tps65910_rtc_ops; tps_rtc->rtc->range_min = RTC_TIMESTAMP_BEGIN_2000; tps_rtc->rtc->range_max = RTC_TIMESTAMP_END_2099; - ret = rtc_register_device(tps_rtc->rtc); - if (ret) { - dev_err(&pdev->dev, "RTC device register: err %d\n", ret); - return ret; - } - - return 0; + return rtc_register_device(tps_rtc->rtc); } #ifdef CONFIG_PM_SLEEP diff --git a/drivers/rtc/rtc-tx4939.c b/drivers/rtc/rtc-tx4939.c index 5a29915a06ec..715b82981279 100644 --- a/drivers/rtc/rtc-tx4939.c +++ b/drivers/rtc/rtc-tx4939.c @@ -236,7 +236,6 @@ static int __init tx4939_rtc_probe(struct platform_device *pdev) { struct rtc_device *rtc; struct tx4939rtc_plat_data *pdata; - struct resource *res; int irq, ret; struct nvmem_config nvmem_cfg = { .name = "tx4939_nvram", @@ -253,8 +252,7 @@ static int __init tx4939_rtc_probe(struct platform_device *pdev) return -ENOMEM; platform_set_drvdata(pdev, pdata); - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - pdata->rtcreg = devm_ioremap_resource(&pdev->dev, res); + pdata->rtcreg = devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(pdata->rtcreg)) return PTR_ERR(pdata->rtcreg); diff --git a/drivers/rtc/rtc-v3020.c b/drivers/rtc/rtc-v3020.c index 63ffba21397b..d2da92187d56 100644 --- a/drivers/rtc/rtc-v3020.c +++ b/drivers/rtc/rtc-v3020.c @@ -284,7 +284,6 @@ static int rtc_probe(struct platform_device *pdev) struct v3020 *chip; int retval = -EBUSY; int i; - int temp; chip = devm_kzalloc(&pdev->dev, sizeof(*chip), GFP_KERNEL); if (!chip) @@ -302,7 +301,7 @@ static int rtc_probe(struct platform_device *pdev) /* Make sure the v3020 expects a communication cycle * by reading 8 times */ for (i = 0; i < 8; i++) - temp = chip->ops->read_bit(chip); + chip->ops->read_bit(chip); /* Test chip by doing a write/read sequence * to the chip ram */ diff --git a/drivers/rtc/rtc-vr41xx.c b/drivers/rtc/rtc-vr41xx.c index c75230562c0d..c3671043ace7 100644 --- a/drivers/rtc/rtc-vr41xx.c +++ b/drivers/rtc/rtc-vr41xx.c @@ -4,6 +4,7 @@ * * Copyright (C) 2003-2008 Yoichi Yuasa <yuasa@linux-mips.org> */ +#include <linux/compat.h> #include <linux/err.h> #include <linux/fs.h> #include <linux/init.h> @@ -66,6 +67,9 @@ static void __iomem *rtc2_base; #define rtc2_read(offset) readw(rtc2_base + (offset)) #define rtc2_write(offset, value) writew((value), rtc2_base + (offset)) +/* 32-bit compat for ioctls that nobody else uses */ +#define RTC_EPOCH_READ32 _IOR('p', 0x0d, __u32) + static unsigned long epoch = 1970; /* Jan 1 1970 00:00:00 */ static DEFINE_SPINLOCK(rtc_lock); @@ -179,6 +183,10 @@ static int vr41xx_rtc_ioctl(struct device *dev, unsigned int cmd, unsigned long switch (cmd) { case RTC_EPOCH_READ: return put_user(epoch, (unsigned long __user *)arg); +#ifdef CONFIG_64BIT + case RTC_EPOCH_READ32: + return put_user(epoch, (unsigned int __user *)arg); +#endif case RTC_EPOCH_SET: /* Doesn't support before 1900 */ if (arg < 1900) diff --git a/drivers/rtc/rtc-vt8500.c b/drivers/rtc/rtc-vt8500.c index f59d232810de..e2588625025f 100644 --- a/drivers/rtc/rtc-vt8500.c +++ b/drivers/rtc/rtc-vt8500.c @@ -122,12 +122,6 @@ static int vt8500_rtc_set_time(struct device *dev, struct rtc_time *tm) { struct vt8500_rtc *vt8500_rtc = dev_get_drvdata(dev); - if (tm->tm_year < 100) { - dev_warn(dev, "Only years 2000-2199 are supported by the " - "hardware!\n"); - return -EINVAL; - } - writel((bin2bcd(tm->tm_year % 100) << DATE_YEAR_S) | (bin2bcd(tm->tm_mon + 1) << DATE_MONTH_S) | (bin2bcd(tm->tm_mday)) @@ -200,7 +194,6 @@ static const struct rtc_class_ops vt8500_rtc_ops = { static int vt8500_rtc_probe(struct platform_device *pdev) { struct vt8500_rtc *vt8500_rtc; - struct resource *res; int ret; vt8500_rtc = devm_kzalloc(&pdev->dev, @@ -212,13 +205,10 @@ static int vt8500_rtc_probe(struct platform_device *pdev) platform_set_drvdata(pdev, vt8500_rtc); vt8500_rtc->irq_alarm = platform_get_irq(pdev, 0); - if (vt8500_rtc->irq_alarm < 0) { - dev_err(&pdev->dev, "No alarm IRQ resource defined\n"); + if (vt8500_rtc->irq_alarm < 0) return vt8500_rtc->irq_alarm; - } - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - vt8500_rtc->regbase = devm_ioremap_resource(&pdev->dev, res); + vt8500_rtc->regbase = devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(vt8500_rtc->regbase)) return PTR_ERR(vt8500_rtc->regbase); @@ -226,27 +216,23 @@ static int vt8500_rtc_probe(struct platform_device *pdev) writel(VT8500_RTC_CR_ENABLE, vt8500_rtc->regbase + VT8500_RTC_CR); - vt8500_rtc->rtc = devm_rtc_device_register(&pdev->dev, "vt8500-rtc", - &vt8500_rtc_ops, THIS_MODULE); - if (IS_ERR(vt8500_rtc->rtc)) { - ret = PTR_ERR(vt8500_rtc->rtc); - dev_err(&pdev->dev, - "Failed to register RTC device -> %d\n", ret); - goto err_return; - } + vt8500_rtc->rtc = devm_rtc_allocate_device(&pdev->dev); + if (IS_ERR(vt8500_rtc->rtc)) + return PTR_ERR(vt8500_rtc->rtc); + + vt8500_rtc->rtc->ops = &vt8500_rtc_ops; + vt8500_rtc->rtc->range_min = RTC_TIMESTAMP_BEGIN_2000; + vt8500_rtc->rtc->range_max = RTC_TIMESTAMP_END_2199; ret = devm_request_irq(&pdev->dev, vt8500_rtc->irq_alarm, vt8500_rtc_irq, 0, "rtc alarm", vt8500_rtc); if (ret < 0) { dev_err(&pdev->dev, "can't get irq %i, err %d\n", vt8500_rtc->irq_alarm, ret); - goto err_return; + return ret; } - return 0; - -err_return: - return ret; + return rtc_register_device(vt8500_rtc->rtc); } static int vt8500_rtc_remove(struct platform_device *pdev) diff --git a/drivers/rtc/rtc-wilco-ec.c b/drivers/rtc/rtc-wilco-ec.c index 8ad4c4e6d557..ff46066a68a4 100644 --- a/drivers/rtc/rtc-wilco-ec.c +++ b/drivers/rtc/rtc-wilco-ec.c @@ -110,10 +110,12 @@ static int wilco_ec_rtc_read(struct device *dev, struct rtc_time *tm) tm->tm_mday = rtc.day; tm->tm_mon = rtc.month - 1; tm->tm_year = rtc.year + (rtc.century * 100) - 1900; - tm->tm_yday = rtc_year_days(tm->tm_mday, tm->tm_mon, tm->tm_year); + /* Ignore other tm fields, man rtc says userspace shouldn't use them. */ - /* Don't compute day of week, we don't need it. */ - tm->tm_wday = -1; + if (rtc_valid_tm(tm)) { + dev_err(dev, "Time from RTC is invalid: %ptRr\n", tm); + return -EIO; + } return 0; } diff --git a/drivers/rtc/rtc-xgene.c b/drivers/rtc/rtc-xgene.c index 9888383f0088..96db441f92b3 100644 --- a/drivers/rtc/rtc-xgene.c +++ b/drivers/rtc/rtc-xgene.c @@ -34,7 +34,6 @@ struct xgene_rtc_dev { struct rtc_device *rtc; - struct device *dev; void __iomem *csr_base; struct clk *clk; unsigned int irq_wake; @@ -137,7 +136,6 @@ static irqreturn_t xgene_rtc_interrupt(int irq, void *id) static int xgene_rtc_probe(struct platform_device *pdev) { struct xgene_rtc_dev *pdata; - struct resource *res; int ret; int irq; @@ -145,10 +143,8 @@ static int xgene_rtc_probe(struct platform_device *pdev) if (!pdata) return -ENOMEM; platform_set_drvdata(pdev, pdata); - pdata->dev = &pdev->dev; - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - pdata->csr_base = devm_ioremap_resource(&pdev->dev, res); + pdata->csr_base = devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(pdata->csr_base)) return PTR_ERR(pdata->csr_base); @@ -157,10 +153,8 @@ static int xgene_rtc_probe(struct platform_device *pdev) return PTR_ERR(pdata->rtc); irq = platform_get_irq(pdev, 0); - if (irq < 0) { - dev_err(&pdev->dev, "No IRQ resource\n"); + if (irq < 0) return irq; - } ret = devm_request_irq(&pdev->dev, irq, xgene_rtc_interrupt, 0, dev_name(&pdev->dev), pdata); if (ret) { diff --git a/drivers/rtc/rtc-zynqmp.c b/drivers/rtc/rtc-zynqmp.c index 00639594de0c..5786866c09e9 100644 --- a/drivers/rtc/rtc-zynqmp.c +++ b/drivers/rtc/rtc-zynqmp.c @@ -44,7 +44,7 @@ struct xlnx_rtc_dev { void __iomem *reg_base; int alarm_irq; int sec_irq; - int calibval; + unsigned int calibval; }; static int xlnx_rtc_set_time(struct device *dev, struct rtc_time *tm) @@ -94,7 +94,7 @@ static int xlnx_rtc_read_time(struct device *dev, struct rtc_time *tm) * RTC has updated the CURRENT_TIME with the time written into * SET_TIME_WRITE register. */ - rtc_time64_to_tm(readl(xrtcdev->reg_base + RTC_CUR_TM), tm); + read_time = readl(xrtcdev->reg_base + RTC_CUR_TM); } else { /* * Time written in SET_TIME_WRITE has not yet updated into @@ -104,8 +104,8 @@ static int xlnx_rtc_read_time(struct device *dev, struct rtc_time *tm) * reading. */ read_time = readl(xrtcdev->reg_base + RTC_SET_TM_RD) - 1; - rtc_time64_to_tm(read_time, tm); } + rtc_time64_to_tm(read_time, tm); return 0; } @@ -195,7 +195,6 @@ static irqreturn_t xlnx_rtc_interrupt(int irq, void *id) static int xlnx_rtc_probe(struct platform_device *pdev) { struct xlnx_rtc_dev *xrtcdev; - struct resource *res; int ret; xrtcdev = devm_kzalloc(&pdev->dev, sizeof(*xrtcdev), GFP_KERNEL); @@ -211,17 +210,13 @@ static int xlnx_rtc_probe(struct platform_device *pdev) xrtcdev->rtc->ops = &xlnx_rtc_ops; xrtcdev->rtc->range_max = U32_MAX; - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - - xrtcdev->reg_base = devm_ioremap_resource(&pdev->dev, res); + xrtcdev->reg_base = devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(xrtcdev->reg_base)) return PTR_ERR(xrtcdev->reg_base); xrtcdev->alarm_irq = platform_get_irq_byname(pdev, "alarm"); - if (xrtcdev->alarm_irq < 0) { - dev_err(&pdev->dev, "no irq resource\n"); + if (xrtcdev->alarm_irq < 0) return xrtcdev->alarm_irq; - } ret = devm_request_irq(&pdev->dev, xrtcdev->alarm_irq, xlnx_rtc_interrupt, 0, dev_name(&pdev->dev), xrtcdev); @@ -231,10 +226,8 @@ static int xlnx_rtc_probe(struct platform_device *pdev) } xrtcdev->sec_irq = platform_get_irq_byname(pdev, "sec"); - if (xrtcdev->sec_irq < 0) { - dev_err(&pdev->dev, "no irq resource\n"); + if (xrtcdev->sec_irq < 0) return xrtcdev->sec_irq; - } ret = devm_request_irq(&pdev->dev, xrtcdev->sec_irq, xlnx_rtc_interrupt, 0, dev_name(&pdev->dev), xrtcdev); diff --git a/drivers/rtc/sysfs.c b/drivers/rtc/sysfs.c index be3531e7f868..b7ca7d79fb28 100644 --- a/drivers/rtc/sysfs.c +++ b/drivers/rtc/sysfs.c @@ -103,8 +103,11 @@ static DEVICE_ATTR_RW(max_user_freq); /** * rtc_sysfs_show_hctosys - indicate if the given RTC set the system time + * @dev: The device that the attribute belongs to. + * @attr: The attribute being read. + * @buf: The result buffer. * - * Returns 1 if the system clock was set by this RTC at the last + * buf is "1" if the system clock was set by this RTC at the last * boot or resume event. */ static ssize_t |
