diff options
Diffstat (limited to 'drivers/gpio')
49 files changed, 1775 insertions, 1019 deletions
diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig index b2450ba14138..349b16160ac9 100644 --- a/drivers/gpio/Kconfig +++ b/drivers/gpio/Kconfig @@ -146,6 +146,16 @@ config GPIO_MM_LANTIQ (EBU) found on Lantiq SoCs. The gpios are output only as they are created by attaching a 16bit latch to the bus. +config GPIO_F7188X + tristate "F71882FG and F71889F GPIO support" + depends on X86 + help + This option enables support for GPIOs found on Fintek Super-I/O + chips F71882FG and F71889F. + + To compile this driver as a module, choose M here: the module will + be called f7188x-gpio. + config GPIO_MPC5200 def_bool y depends on PPC_MPC52xx @@ -242,6 +252,21 @@ config GPIO_TS5500 blocks of the TS-5500: DIO1, DIO2 and the LCD port, and the TS-5600 LCD port. +config GPIO_TZ1090 + bool "Toumaz Xenif TZ1090 GPIO support" + depends on SOC_TZ1090 + select GENERIC_IRQ_CHIP + default y + help + Say yes here to support Toumaz Xenif TZ1090 GPIOs. + +config GPIO_TZ1090_PDC + bool "Toumaz Xenif TZ1090 PDC GPIO support" + depends on SOC_TZ1090 + default y + help + Say yes here to support Toumaz Xenif TZ1090 PDC GPIOs. + config GPIO_XILINX bool "Xilinx GPIO support" depends on PPC_OF || MICROBLAZE || ARCH_ZYNQ @@ -676,6 +701,18 @@ config GPIO_UCB1400 This enables support for the Philips UCB1400 GPIO pins. The UCB1400 is an AC97 audio codec. +comment "LPC GPIO expanders:" + +config GPIO_KEMPLD + tristate "Kontron ETX / COMexpress GPIO" + depends on MFD_KEMPLD + help + This enables support for the PLD GPIO interface on some Kontron ETX + and COMexpress (ETXexpress) modules. + + This driver can also be built as a module. If so, the module will be + called gpio-kempld. + comment "MODULbus GPIO expanders:" config GPIO_JANZ_TTL diff --git a/drivers/gpio/Makefile b/drivers/gpio/Makefile index ef3e983a2f1e..97438bf8434a 100644 --- a/drivers/gpio/Makefile +++ b/drivers/gpio/Makefile @@ -24,11 +24,13 @@ obj-$(CONFIG_GPIO_DA9055) += gpio-da9055.o obj-$(CONFIG_ARCH_DAVINCI) += gpio-davinci.o obj-$(CONFIG_GPIO_EM) += gpio-em.o obj-$(CONFIG_GPIO_EP93XX) += gpio-ep93xx.o +obj-$(CONFIG_GPIO_F7188X) += gpio-f7188x.o obj-$(CONFIG_GPIO_GE_FPGA) += gpio-ge.o obj-$(CONFIG_GPIO_GRGPIO) += gpio-grgpio.o obj-$(CONFIG_GPIO_ICH) += gpio-ich.o obj-$(CONFIG_GPIO_IT8761E) += gpio-it8761e.o obj-$(CONFIG_GPIO_JANZ_TTL) += gpio-janz-ttl.o +obj-$(CONFIG_GPIO_KEMPLD) += gpio-kempld.o obj-$(CONFIG_ARCH_KS8695) += gpio-ks8695.o obj-$(CONFIG_GPIO_LANGWELL) += gpio-langwell.o obj-$(CONFIG_ARCH_LPC32XX) += gpio-lpc32xx.o @@ -79,6 +81,8 @@ obj-$(CONFIG_GPIO_TPS65912) += gpio-tps65912.o obj-$(CONFIG_GPIO_TS5500) += gpio-ts5500.o obj-$(CONFIG_GPIO_TWL4030) += gpio-twl4030.o obj-$(CONFIG_GPIO_TWL6040) += gpio-twl6040.o +obj-$(CONFIG_GPIO_TZ1090) += gpio-tz1090.o +obj-$(CONFIG_GPIO_TZ1090_PDC) += gpio-tz1090-pdc.o obj-$(CONFIG_GPIO_UCB1400) += gpio-ucb1400.o obj-$(CONFIG_GPIO_VIPERBOARD) += gpio-viperboard.o obj-$(CONFIG_GPIO_VR41XX) += gpio-vr41xx.o diff --git a/drivers/gpio/gpio-74x164.c b/drivers/gpio/gpio-74x164.c index 721607904d0a..5d518d5db7a0 100644 --- a/drivers/gpio/gpio-74x164.c +++ b/drivers/gpio/gpio-74x164.c @@ -129,7 +129,7 @@ static int gen_74x164_probe(struct spi_device *spi) if (!chip) return -ENOMEM; - pdata = spi->dev.platform_data; + pdata = dev_get_platdata(&spi->dev); if (pdata && pdata->base) chip->gpio_chip.base = pdata->base; else diff --git a/drivers/gpio/gpio-adnp.c b/drivers/gpio/gpio-adnp.c index e60567fc5073..c0f3fc44ab0e 100644 --- a/drivers/gpio/gpio-adnp.c +++ b/drivers/gpio/gpio-adnp.c @@ -490,15 +490,11 @@ static int adnp_irq_setup(struct adnp *adnp) if (err != 0) { dev_err(chip->dev, "can't request IRQ#%d: %d\n", adnp->client->irq, err); - goto error; + return err; } chip->to_irq = adnp_gpio_to_irq; return 0; - -error: - irq_domain_remove(adnp->domain); - return err; } static void adnp_irq_teardown(struct adnp *adnp) diff --git a/drivers/gpio/gpio-adp5520.c b/drivers/gpio/gpio-adp5520.c index f33f78dcadaa..084337d5514d 100644 --- a/drivers/gpio/gpio-adp5520.c +++ b/drivers/gpio/gpio-adp5520.c @@ -89,7 +89,7 @@ static int adp5520_gpio_direction_output(struct gpio_chip *chip, static int adp5520_gpio_probe(struct platform_device *pdev) { - struct adp5520_gpio_platform_data *pdata = pdev->dev.platform_data; + struct adp5520_gpio_platform_data *pdata = dev_get_platdata(&pdev->dev); struct adp5520_gpio *dev; struct gpio_chip *gc; int ret, i, gpios; diff --git a/drivers/gpio/gpio-adp5588.c b/drivers/gpio/gpio-adp5588.c index 2ba56987db04..90fc4c99c024 100644 --- a/drivers/gpio/gpio-adp5588.c +++ b/drivers/gpio/gpio-adp5588.c @@ -276,7 +276,8 @@ static irqreturn_t adp5588_irq_handler(int irq, void *devid) static int adp5588_irq_setup(struct adp5588_gpio *dev) { struct i2c_client *client = dev->client; - struct adp5588_gpio_platform_data *pdata = client->dev.platform_data; + struct adp5588_gpio_platform_data *pdata = + dev_get_platdata(&client->dev); unsigned gpio; int ret; @@ -349,7 +350,8 @@ static void adp5588_irq_teardown(struct adp5588_gpio *dev) static int adp5588_gpio_probe(struct i2c_client *client, const struct i2c_device_id *id) { - struct adp5588_gpio_platform_data *pdata = client->dev.platform_data; + struct adp5588_gpio_platform_data *pdata = + dev_get_platdata(&client->dev); struct adp5588_gpio *dev; struct gpio_chip *gc; int ret, i, revid; @@ -440,7 +442,8 @@ err: static int adp5588_gpio_remove(struct i2c_client *client) { - struct adp5588_gpio_platform_data *pdata = client->dev.platform_data; + struct adp5588_gpio_platform_data *pdata = + dev_get_platdata(&client->dev); struct adp5588_gpio *dev = i2c_get_clientdata(client); int ret; diff --git a/drivers/gpio/gpio-arizona.c b/drivers/gpio/gpio-arizona.c index 0ea853f68db2..fa8b6a762761 100644 --- a/drivers/gpio/gpio-arizona.c +++ b/drivers/gpio/gpio-arizona.c @@ -97,7 +97,7 @@ static struct gpio_chip template_chip = { static int arizona_gpio_probe(struct platform_device *pdev) { struct arizona *arizona = dev_get_drvdata(pdev->dev.parent); - struct arizona_pdata *pdata = arizona->dev->platform_data; + struct arizona_pdata *pdata = dev_get_platdata(arizona->dev); struct arizona_gpio *arizona_gpio; int ret; diff --git a/drivers/gpio/gpio-da9052.c b/drivers/gpio/gpio-da9052.c index 29b11e9b6a78..9b77dc05d4ad 100644 --- a/drivers/gpio/gpio-da9052.c +++ b/drivers/gpio/gpio-da9052.c @@ -216,7 +216,7 @@ static int da9052_gpio_probe(struct platform_device *pdev) return -ENOMEM; gpio->da9052 = dev_get_drvdata(pdev->dev.parent); - pdata = gpio->da9052->dev->platform_data; + pdata = dev_get_platdata(gpio->da9052->dev); gpio->gp = reference_gp; if (pdata && pdata->gpio_base) diff --git a/drivers/gpio/gpio-da9055.c b/drivers/gpio/gpio-da9055.c index fd6dfe382f13..7ef0820032bd 100644 --- a/drivers/gpio/gpio-da9055.c +++ b/drivers/gpio/gpio-da9055.c @@ -150,7 +150,7 @@ static int da9055_gpio_probe(struct platform_device *pdev) return -ENOMEM; gpio->da9055 = dev_get_drvdata(pdev->dev.parent); - pdata = gpio->da9055->dev->platform_data; + pdata = dev_get_platdata(gpio->da9055->dev); gpio->gp = reference_gp; if (pdata && pdata->gpio_base) diff --git a/drivers/gpio/gpio-em.c b/drivers/gpio/gpio-em.c index 5cba855638bf..c6e1f086efe8 100644 --- a/drivers/gpio/gpio-em.c +++ b/drivers/gpio/gpio-em.c @@ -30,6 +30,7 @@ #include <linux/gpio.h> #include <linux/slab.h> #include <linux/module.h> +#include <linux/pinctrl/consumer.h> #include <linux/platform_data/gpio-em.h> struct em_gio_priv { @@ -216,6 +217,21 @@ static int em_gio_to_irq(struct gpio_chip *chip, unsigned offset) return irq_create_mapping(gpio_to_priv(chip)->irq_domain, offset); } +static int em_gio_request(struct gpio_chip *chip, unsigned offset) +{ + return pinctrl_request_gpio(chip->base + offset); +} + +static void em_gio_free(struct gpio_chip *chip, unsigned offset) +{ + pinctrl_free_gpio(chip->base + offset); + + /* Set the GPIO as an input to ensure that the next GPIO request won't + * drive the GPIO pin as an output. + */ + em_gio_direction_input(chip, offset); +} + static int em_gio_irq_domain_map(struct irq_domain *h, unsigned int virq, irq_hw_number_t hw) { @@ -237,7 +253,7 @@ static struct irq_domain_ops em_gio_irq_domain_ops = { static int em_gio_probe(struct platform_device *pdev) { struct gpio_em_config pdata_dt; - struct gpio_em_config *pdata = pdev->dev.platform_data; + struct gpio_em_config *pdata = dev_get_platdata(&pdev->dev); struct em_gio_priv *p; struct resource *io[2], *irq[2]; struct gpio_chip *gpio_chip; @@ -308,6 +324,8 @@ static int em_gio_probe(struct platform_device *pdev) gpio_chip->direction_output = em_gio_direction_output; gpio_chip->set = em_gio_set; gpio_chip->to_irq = em_gio_to_irq; + gpio_chip->request = em_gio_request; + gpio_chip->free = em_gio_free; gpio_chip->label = name; gpio_chip->owner = THIS_MODULE; gpio_chip->base = pdata->gpio_base; @@ -351,6 +369,13 @@ static int em_gio_probe(struct platform_device *pdev) dev_err(&pdev->dev, "failed to add GPIO controller\n"); goto err1; } + + if (pdata->pctl_name) { + ret = gpiochip_add_pin_range(gpio_chip, pdata->pctl_name, 0, + gpio_chip->base, gpio_chip->ngpio); + if (ret < 0) + dev_warn(&pdev->dev, "failed to add pin range\n"); + } return 0; err1: diff --git a/drivers/gpio/gpio-f7188x.c b/drivers/gpio/gpio-f7188x.c new file mode 100644 index 000000000000..9cb8320e1181 --- /dev/null +++ b/drivers/gpio/gpio-f7188x.c @@ -0,0 +1,469 @@ +/* + * GPIO driver for Fintek Super-I/O F71882 and F71889 + * + * Copyright (C) 2010-2013 LaCie + * + * Author: Simon Guinot <simon.guinot@sequanux.org> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + */ + +#include <linux/module.h> +#include <linux/init.h> +#include <linux/platform_device.h> +#include <linux/io.h> +#include <linux/gpio.h> + +#define DRVNAME "gpio-f7188x" + +/* + * Super-I/O registers + */ +#define SIO_LDSEL 0x07 /* Logical device select */ +#define SIO_DEVID 0x20 /* Device ID (2 bytes) */ +#define SIO_DEVREV 0x22 /* Device revision */ +#define SIO_MANID 0x23 /* Fintek ID (2 bytes) */ + +#define SIO_LD_GPIO 0x06 /* GPIO logical device */ +#define SIO_UNLOCK_KEY 0x87 /* Key to enable Super-I/O */ +#define SIO_LOCK_KEY 0xAA /* Key to disable Super-I/O */ + +#define SIO_FINTEK_ID 0x1934 /* Manufacturer ID */ +#define SIO_F71882_ID 0x0541 /* F71882 chipset ID */ +#define SIO_F71889_ID 0x0909 /* F71889 chipset ID */ + +enum chips { f71882fg, f71889f }; + +static const char * const f7188x_names[] = { + "f71882fg", + "f71889f", +}; + +struct f7188x_sio { + int addr; + enum chips type; +}; + +struct f7188x_gpio_bank { + struct gpio_chip chip; + unsigned int regbase; + struct f7188x_gpio_data *data; +}; + +struct f7188x_gpio_data { + struct f7188x_sio *sio; + int nr_bank; + struct f7188x_gpio_bank *bank; +}; + +/* + * Super-I/O functions. + */ + +static inline int superio_inb(int base, int reg) +{ + outb(reg, base); + return inb(base + 1); +} + +static int superio_inw(int base, int reg) +{ + int val; + + outb(reg++, base); + val = inb(base + 1) << 8; + outb(reg, base); + val |= inb(base + 1); + + return val; +} + +static inline void superio_outb(int base, int reg, int val) +{ + outb(reg, base); + outb(val, base + 1); +} + +static inline int superio_enter(int base) +{ + /* Don't step on other drivers' I/O space by accident. */ + if (!request_muxed_region(base, 2, DRVNAME)) { + pr_err(DRVNAME "I/O address 0x%04x already in use\n", base); + return -EBUSY; + } + + /* According to the datasheet the key must be send twice. */ + outb(SIO_UNLOCK_KEY, base); + outb(SIO_UNLOCK_KEY, base); + + return 0; +} + +static inline void superio_select(int base, int ld) +{ + outb(SIO_LDSEL, base); + outb(ld, base + 1); +} + +static inline void superio_exit(int base) +{ + outb(SIO_LOCK_KEY, base); + release_region(base, 2); +} + +/* + * GPIO chip. + */ + +static int f7188x_gpio_direction_in(struct gpio_chip *chip, unsigned offset); +static int f7188x_gpio_get(struct gpio_chip *chip, unsigned offset); +static int f7188x_gpio_direction_out(struct gpio_chip *chip, + unsigned offset, int value); +static void f7188x_gpio_set(struct gpio_chip *chip, unsigned offset, int value); + +#define F7188X_GPIO_BANK(_base, _ngpio, _regbase) \ + { \ + .chip = { \ + .label = DRVNAME, \ + .owner = THIS_MODULE, \ + .direction_input = f7188x_gpio_direction_in, \ + .get = f7188x_gpio_get, \ + .direction_output = f7188x_gpio_direction_out, \ + .set = f7188x_gpio_set, \ + .base = _base, \ + .ngpio = _ngpio, \ + }, \ + .regbase = _regbase, \ + } + +#define gpio_dir(base) (base + 0) +#define gpio_data_out(base) (base + 1) +#define gpio_data_in(base) (base + 2) +/* Output mode register (0:open drain 1:push-pull). */ +#define gpio_out_mode(base) (base + 3) + +static struct f7188x_gpio_bank f71882_gpio_bank[] = { + F7188X_GPIO_BANK(0 , 8, 0xF0), + F7188X_GPIO_BANK(10, 8, 0xE0), + F7188X_GPIO_BANK(20, 8, 0xD0), + F7188X_GPIO_BANK(30, 4, 0xC0), + F7188X_GPIO_BANK(40, 4, 0xB0), +}; + +static struct f7188x_gpio_bank f71889_gpio_bank[] = { + F7188X_GPIO_BANK(0 , 7, 0xF0), + F7188X_GPIO_BANK(10, 7, 0xE0), + F7188X_GPIO_BANK(20, 8, 0xD0), + F7188X_GPIO_BANK(30, 8, 0xC0), + F7188X_GPIO_BANK(40, 8, 0xB0), + F7188X_GPIO_BANK(50, 5, 0xA0), + F7188X_GPIO_BANK(60, 8, 0x90), + F7188X_GPIO_BANK(70, 8, 0x80), +}; + +static int f7188x_gpio_direction_in(struct gpio_chip *chip, unsigned offset) +{ + int err; + struct f7188x_gpio_bank *bank = + container_of(chip, struct f7188x_gpio_bank, chip); + struct f7188x_sio *sio = bank->data->sio; + u8 dir; + + err = superio_enter(sio->addr); + if (err) + return err; + superio_select(sio->addr, SIO_LD_GPIO); + + dir = superio_inb(sio->addr, gpio_dir(bank->regbase)); + dir &= ~(1 << offset); + superio_outb(sio->addr, gpio_dir(bank->regbase), dir); + + superio_exit(sio->addr); + + return 0; +} + +static int f7188x_gpio_get(struct gpio_chip *chip, unsigned offset) +{ + int err; + struct f7188x_gpio_bank *bank = + container_of(chip, struct f7188x_gpio_bank, chip); + struct f7188x_sio *sio = bank->data->sio; + u8 dir, data; + + err = superio_enter(sio->addr); + if (err) + return err; + superio_select(sio->addr, SIO_LD_GPIO); + + dir = superio_inb(sio->addr, gpio_dir(bank->regbase)); + dir = !!(dir & (1 << offset)); + if (dir) + data = superio_inb(sio->addr, gpio_data_out(bank->regbase)); + else + data = superio_inb(sio->addr, gpio_data_in(bank->regbase)); + + superio_exit(sio->addr); + + return !!(data & 1 << offset); +} + +static int f7188x_gpio_direction_out(struct gpio_chip *chip, + unsigned offset, int value) +{ + int err; + struct f7188x_gpio_bank *bank = + container_of(chip, struct f7188x_gpio_bank, chip); + struct f7188x_sio *sio = bank->data->sio; + u8 dir, data_out; + + err = superio_enter(sio->addr); + if (err) + return err; + superio_select(sio->addr, SIO_LD_GPIO); + + data_out = superio_inb(sio->addr, gpio_data_out(bank->regbase)); + if (value) + data_out |= (1 << offset); + else + data_out &= ~(1 << offset); + superio_outb(sio->addr, gpio_data_out(bank->regbase), data_out); + + dir = superio_inb(sio->addr, gpio_dir(bank->regbase)); + dir |= (1 << offset); + superio_outb(sio->addr, gpio_dir(bank->regbase), dir); + + superio_exit(sio->addr); + + return 0; +} + +static void f7188x_gpio_set(struct gpio_chip *chip, unsigned offset, int value) +{ + int err; + struct f7188x_gpio_bank *bank = + container_of(chip, struct f7188x_gpio_bank, chip); + struct f7188x_sio *sio = bank->data->sio; + u8 data_out; + + err = superio_enter(sio->addr); + if (err) + return; + superio_select(sio->addr, SIO_LD_GPIO); + + data_out = superio_inb(sio->addr, gpio_data_out(bank->regbase)); + if (value) + data_out |= (1 << offset); + else + data_out &= ~(1 << offset); + superio_outb(sio->addr, gpio_data_out(bank->regbase), data_out); + + superio_exit(sio->addr); +} + +/* + * Platform device and driver. + */ + +static int f7188x_gpio_probe(struct platform_device *pdev) +{ + int err; + int i; + struct f7188x_sio *sio = pdev->dev.platform_data; + struct f7188x_gpio_data *data; + + data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL); + if (!data) + return -ENOMEM; + + switch (sio->type) { + case f71882fg: + data->nr_bank = ARRAY_SIZE(f71882_gpio_bank); + data->bank = f71882_gpio_bank; + break; + case f71889f: + data->nr_bank = ARRAY_SIZE(f71889_gpio_bank); + data->bank = f71889_gpio_bank; + break; + default: + return -ENODEV; + } + data->sio = sio; + + platform_set_drvdata(pdev, data); + + /* For each GPIO bank, register a GPIO chip. */ + for (i = 0; i < data->nr_bank; i++) { + struct f7188x_gpio_bank *bank = &data->bank[i]; + + bank->chip.dev = &pdev->dev; + bank->data = data; + + err = gpiochip_add(&bank->chip); + if (err) { + dev_err(&pdev->dev, + "Failed to register gpiochip %d: %d\n", + i, err); + goto err_gpiochip; + } + } + + return 0; + +err_gpiochip: + for (i = i - 1; i >= 0; i--) { + struct f7188x_gpio_bank *bank = &data->bank[i]; + int tmp; + + tmp = gpiochip_remove(&bank->chip); + if (tmp < 0) + dev_err(&pdev->dev, + "Failed to remove gpiochip %d: %d\n", + i, tmp); + } + + return err; +} + +static int f7188x_gpio_remove(struct platform_device *pdev) +{ + int err; + int i; + struct f7188x_gpio_data *data = platform_get_drvdata(pdev); + + for (i = 0; i < data->nr_bank; i++) { + struct f7188x_gpio_bank *bank = &data->bank[i]; + + err = gpiochip_remove(&bank->chip); + if (err) { + dev_err(&pdev->dev, + "Failed to remove GPIO gpiochip %d: %d\n", + i, err); + return err; + } + } + + return 0; +} + +static int __init f7188x_find(int addr, struct f7188x_sio *sio) +{ + int err; + u16 devid; + + err = superio_enter(addr); + if (err) + return err; + + err = -ENODEV; + devid = superio_inw(addr, SIO_MANID); + if (devid != SIO_FINTEK_ID) { + pr_debug(DRVNAME ": Not a Fintek device at 0x%08x\n", addr); + goto err; + } + + devid = superio_inw(addr, SIO_DEVID); + switch (devid) { + case SIO_F71882_ID: + sio->type = f71882fg; + break; + case SIO_F71889_ID: + sio->type = f71889f; + break; + default: + pr_info(DRVNAME ": Unsupported Fintek device 0x%04x\n", devid); + goto err; + } + sio->addr = addr; + err = 0; + + pr_info(DRVNAME ": Found %s at %#x, revision %d\n", + f7188x_names[sio->type], + (unsigned int) addr, + (int) superio_inb(addr, SIO_DEVREV)); + +err: + superio_exit(addr); + return err; +} + +static struct platform_device *f7188x_gpio_pdev; + +static int __init +f7188x_gpio_device_add(const struct f7188x_sio *sio) +{ + int err; + + f7188x_gpio_pdev = platform_device_alloc(DRVNAME, -1); + if (!f7188x_gpio_pdev) + return -ENOMEM; + + err = platform_device_add_data(f7188x_gpio_pdev, + sio, sizeof(*sio)); + if (err) { + pr_err(DRVNAME "Platform data allocation failed\n"); + goto err; + } + + err = platform_device_add(f7188x_gpio_pdev); + if (err) { + pr_err(DRVNAME "Device addition failed\n"); + goto err; + } + + return 0; + +err: + platform_device_put(f7188x_gpio_pdev); + + return err; +} + +/* + * Try to match a supported Fintech device by reading the (hard-wired) + * configuration I/O ports. If available, then register both the platform + * device and driver to support the GPIOs. + */ + +static struct platform_driver f7188x_gpio_driver = { + .driver = { + .owner = THIS_MODULE, + .name = DRVNAME, + }, + .probe = f7188x_gpio_probe, + .remove = f7188x_gpio_remove, +}; + +static int __init f7188x_gpio_init(void) +{ + int err; + struct f7188x_sio sio; + + if (f7188x_find(0x2e, &sio) && + f7188x_find(0x4e, &sio)) + return -ENODEV; + + err = platform_driver_register(&f7188x_gpio_driver); + if (!err) { + err = f7188x_gpio_device_add(&sio); + if (err) + platform_driver_unregister(&f7188x_gpio_driver); + } + + return err; +} +subsys_initcall(f7188x_gpio_init); + +static void __exit f7188x_gpio_exit(void) +{ + platform_device_unregister(f7188x_gpio_pdev); + platform_driver_unregister(&f7188x_gpio_driver); +} +module_exit(f7188x_gpio_exit); + +MODULE_DESCRIPTION("GPIO driver for Super-I/O chips F71882FG and F71889F"); +MODULE_AUTHOR("Simon Guinot <simon.guinot@sequanux.org>"); +MODULE_LICENSE("GPL"); diff --git a/drivers/gpio/gpio-ich.c b/drivers/gpio/gpio-ich.c index 2729e3d2d5bb..814addb62d2c 100644 --- a/drivers/gpio/gpio-ich.c +++ b/drivers/gpio/gpio-ich.c @@ -354,7 +354,7 @@ static int ichx_gpio_probe(struct platform_device *pdev) { struct resource *res_base, *res_pm; int err; - struct lpc_ich_info *ich_info = pdev->dev.platform_data; + struct lpc_ich_info *ich_info = dev_get_platdata(&pdev->dev); if (!ich_info) return -ENODEV; diff --git a/drivers/gpio/gpio-janz-ttl.c b/drivers/gpio/gpio-janz-ttl.c index 7d0a04169a35..2ecd3a09c743 100644 --- a/drivers/gpio/gpio-janz-ttl.c +++ b/drivers/gpio/gpio-janz-ttl.c @@ -149,7 +149,7 @@ static int ttl_probe(struct platform_device *pdev) struct resource *res; int ret; - pdata = pdev->dev.platform_data; + pdata = dev_get_platdata(&pdev->dev); if (!pdata) { dev_err(dev, "no platform data\n"); ret = -ENXIO; diff --git a/drivers/gpio/gpio-kempld.c b/drivers/gpio/gpio-kempld.c new file mode 100644 index 000000000000..efdc3924d7df --- /dev/null +++ b/drivers/gpio/gpio-kempld.c @@ -0,0 +1,219 @@ +/* + * Kontron PLD GPIO driver + * + * Copyright (c) 2010-2013 Kontron Europe GmbH + * Author: Michael Brunner <michael.brunner@kontron.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License 2 as published + * by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <linux/init.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/bitops.h> +#include <linux/errno.h> +#include <linux/platform_device.h> +#include <linux/gpio.h> +#include <linux/mfd/kempld.h> + +#define KEMPLD_GPIO_MAX_NUM 16 +#define KEMPLD_GPIO_MASK(x) (1 << ((x) % 8)) +#define KEMPLD_GPIO_DIR_NUM(x) (0x40 + (x) / 8) +#define KEMPLD_GPIO_LVL_NUM(x) (0x42 + (x) / 8) +#define KEMPLD_GPIO_EVT_LVL_EDGE 0x46 +#define KEMPLD_GPIO_IEN 0x4A + +struct kempld_gpio_data { + struct gpio_chip chip; + struct kempld_device_data *pld; +}; + +/* + * Set or clear GPIO bit + * kempld_get_mutex must be called prior to calling this function. + */ +static void kempld_gpio_bitop(struct kempld_device_data *pld, + u8 reg, u8 bit, u8 val) +{ + u8 status; + + status = kempld_read8(pld, reg); + if (val) + status |= KEMPLD_GPIO_MASK(bit); + else + status &= ~KEMPLD_GPIO_MASK(bit); + kempld_write8(pld, reg, status); +} + +static int kempld_gpio_get_bit(struct kempld_device_data *pld, u8 reg, u8 bit) +{ + u8 status; + + kempld_get_mutex(pld); + status = kempld_read8(pld, reg); + kempld_release_mutex(pld); + + return !!(status & KEMPLD_GPIO_MASK(bit)); +} + +static int kempld_gpio_get(struct gpio_chip *chip, unsigned offset) +{ + struct kempld_gpio_data *gpio + = container_of(chip, struct kempld_gpio_data, chip); + struct kempld_device_data *pld = gpio->pld; + + return kempld_gpio_get_bit(pld, KEMPLD_GPIO_LVL_NUM(offset), offset); +} + +static void kempld_gpio_set(struct gpio_chip *chip, unsigned offset, int value) +{ + struct kempld_gpio_data *gpio + = container_of(chip, struct kempld_gpio_data, chip); + struct kempld_device_data *pld = gpio->pld; + + kempld_get_mutex(pld); + kempld_gpio_bitop(pld, KEMPLD_GPIO_LVL_NUM(offset), offset, value); + kempld_release_mutex(pld); +} + +static int kempld_gpio_direction_input(struct gpio_chip *chip, unsigned offset) +{ + struct kempld_gpio_data *gpio + = container_of(chip, struct kempld_gpio_data, chip); + struct kempld_device_data *pld = gpio->pld; + + kempld_get_mutex(pld); + kempld_gpio_bitop(pld, KEMPLD_GPIO_DIR_NUM(offset), offset, 0); + kempld_release_mutex(pld); + + return 0; +} + +static int kempld_gpio_direction_output(struct gpio_chip *chip, unsigned offset, + int value) +{ + struct kempld_gpio_data *gpio + = container_of(chip, struct kempld_gpio_data, chip); + struct kempld_device_data *pld = gpio->pld; + + kempld_get_mutex(pld); + kempld_gpio_bitop(pld, KEMPLD_GPIO_LVL_NUM(offset), offset, value); + kempld_gpio_bitop(pld, KEMPLD_GPIO_DIR_NUM(offset), offset, 1); + kempld_release_mutex(pld); + + return 0; +} + +static int kempld_gpio_get_direction(struct gpio_chip *chip, unsigned offset) +{ + struct kempld_gpio_data *gpio + = container_of(chip, struct kempld_gpio_data, chip); + struct kempld_device_data *pld = gpio->pld; + + return kempld_gpio_get_bit(pld, KEMPLD_GPIO_DIR_NUM(offset), offset); +} + +static int kempld_gpio_pincount(struct kempld_device_data *pld) +{ + u16 evt, evt_back; + + kempld_get_mutex(pld); + + /* Backup event register as it might be already initialized */ + evt_back = kempld_read16(pld, KEMPLD_GPIO_EVT_LVL_EDGE); + /* Clear event register */ + kempld_write16(pld, KEMPLD_GPIO_EVT_LVL_EDGE, 0x0000); + /* Read back event register */ + evt = kempld_read16(pld, KEMPLD_GPIO_EVT_LVL_EDGE); + /* Restore event register */ + kempld_write16(pld, KEMPLD_GPIO_EVT_LVL_EDGE, evt_back); + + kempld_release_mutex(pld); + + return evt ? __ffs(evt) : 16; +} + +static int kempld_gpio_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct kempld_device_data *pld = dev_get_drvdata(dev->parent); + struct kempld_platform_data *pdata = dev_get_platdata(pld->dev); + struct kempld_gpio_data *gpio; + struct gpio_chip *chip; + int ret; + + if (pld->info.spec_major < 2) { + dev_err(dev, + "Driver only supports GPIO devices compatible to PLD spec. rev. 2.0 or higher\n"); + return -ENODEV; + } + + gpio = devm_kzalloc(dev, sizeof(*gpio), GFP_KERNEL); + if (gpio == NULL) + return -ENOMEM; + + gpio->pld = pld; + + platform_set_drvdata(pdev, gpio); + + chip = &gpio->chip; + chip->label = "gpio-kempld"; + chip->owner = THIS_MODULE; + chip->dev = dev; + chip->can_sleep = 1; + if (pdata && pdata->gpio_base) + chip->base = pdata->gpio_base; + else + chip->base = -1; + chip->direction_input = kempld_gpio_direction_input; + chip->direction_output = kempld_gpio_direction_output; + chip->get_direction = kempld_gpio_get_direction; + chip->get = kempld_gpio_get; + chip->set = kempld_gpio_set; + chip->ngpio = kempld_gpio_pincount(pld); + if (chip->ngpio == 0) { + dev_err(dev, "No GPIO pins detected\n"); + return -ENODEV; + } + + ret = gpiochip_add(chip); + if (ret) { + dev_err(dev, "Could not register GPIO chip\n"); + return ret; + } + + dev_info(dev, "GPIO functionality initialized with %d pins\n", + chip->ngpio); + + return 0; +} + +static int kempld_gpio_remove(struct platform_device *pdev) +{ + struct kempld_gpio_data *gpio = platform_get_drvdata(pdev); + + return gpiochip_remove(&gpio->chip); +} + +static struct platform_driver kempld_gpio_driver = { + .driver = { + .name = "kempld-gpio", + .owner = THIS_MODULE, + }, + .probe = kempld_gpio_probe, + .remove = kempld_gpio_remove, +}; + +module_platform_driver(kempld_gpio_driver); + +MODULE_DESCRIPTION("KEM PLD GPIO Driver"); +MODULE_AUTHOR("Michael Brunner <michael.brunner@kontron.com>"); +MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform:gpio-kempld"); diff --git a/drivers/gpio/gpio-lynxpoint.c b/drivers/gpio/gpio-lynxpoint.c index 761c4705dfbb..2d9ca6055e5e 100644 --- a/drivers/gpio/gpio-lynxpoint.c +++ b/drivers/gpio/gpio-lynxpoint.c @@ -444,6 +444,7 @@ static int lp_gpio_remove(struct platform_device *pdev) { struct lp_gpio *lg = platform_get_drvdata(pdev); int err; + pm_runtime_disable(&pdev->dev); err = gpiochip_remove(&lg->chip); if (err) dev_warn(&pdev->dev, "failed to remove gpio_chip.\n"); diff --git a/drivers/gpio/gpio-max7301.c b/drivers/gpio/gpio-max7301.c index 3b16ab701630..6e1c984a75d4 100644 --- a/drivers/gpio/gpio-max7301.c +++ b/drivers/gpio/gpio-max7301.c @@ -56,8 +56,7 @@ static int max7301_probe(struct spi_device *spi) int ret; /* bits_per_word cannot be configured in platform data */ - if (spi->dev.platform_data) - spi->bits_per_word = 16; + spi->bits_per_word = 16; ret = spi_setup(spi); if (ret < 0) return ret; diff --git a/drivers/gpio/gpio-max730x.c b/drivers/gpio/gpio-max730x.c index 00092342b84c..f4f4ed19bdc1 100644 --- a/drivers/gpio/gpio-max730x.c +++ b/drivers/gpio/gpio-max730x.c @@ -166,7 +166,7 @@ int __max730x_probe(struct max7301 *ts) struct max7301_platform_data *pdata; int i, ret; - pdata = dev->platform_data; + pdata = dev_get_platdata(dev); mutex_init(&ts->lock); dev_set_drvdata(dev, ts); diff --git a/drivers/gpio/gpio-max732x.c b/drivers/gpio/gpio-max732x.c index d4b51b163b03..91ad74dea8ce 100644 --- a/drivers/gpio/gpio-max732x.c +++ b/drivers/gpio/gpio-max732x.c @@ -453,7 +453,7 @@ static int max732x_irq_setup(struct max732x_chip *chip, const struct i2c_device_id *id) { struct i2c_client *client = chip->client; - struct max732x_platform_data *pdata = client->dev.platform_data; + struct max732x_platform_data *pdata = dev_get_platdata(&client->dev); int has_irq = max732x_features[id->driver_data] >> 32; int ret; @@ -512,7 +512,7 @@ static int max732x_irq_setup(struct max732x_chip *chip, const struct i2c_device_id *id) { struct i2c_client *client = chip->client; - struct max732x_platform_data *pdata = client->dev.platform_data; + struct max732x_platform_data *pdata = dev_get_platdata(&client->dev); int has_irq = max732x_features[id->driver_data] >> 32; if (pdata->irq_base && has_irq != INT_NONE) @@ -583,7 +583,7 @@ static int max732x_probe(struct i2c_client *client, uint16_t addr_a, addr_b; int ret, nr_port; - pdata = client->dev.platform_data; + pdata = dev_get_platdata(&client->dev); if (pdata == NULL) { dev_dbg(&client->dev, "no platform data\n"); return -EINVAL; @@ -653,7 +653,7 @@ out_failed: static int max732x_remove(struct i2c_client *client) { - struct max732x_platform_data *pdata = client->dev.platform_data; + struct max732x_platform_data *pdata = dev_get_platdata(&client->dev); struct max732x_chip *chip = i2c_get_clientdata(client); int ret; diff --git a/drivers/gpio/gpio-mc33880.c b/drivers/gpio/gpio-mc33880.c index 63a7a1bfb2d9..3fd2caa4a2e0 100644 --- a/drivers/gpio/gpio-mc33880.c +++ b/drivers/gpio/gpio-mc33880.c @@ -86,7 +86,7 @@ static int mc33880_probe(struct spi_device *spi) struct mc33880_platform_data *pdata; int ret; - pdata = spi->dev.platform_data; + pdata = dev_get_platdata(&spi->dev); if (!pdata || !pdata->base) { dev_dbg(&spi->dev, "incorrect or missing platform data\n"); return -EINVAL; diff --git a/drivers/gpio/gpio-mcp23s08.c b/drivers/gpio/gpio-mcp23s08.c index 6a4470b84488..2deb0c5e54a4 100644 --- a/drivers/gpio/gpio-mcp23s08.c +++ b/drivers/gpio/gpio-mcp23s08.c @@ -483,10 +483,21 @@ fail: #ifdef CONFIG_SPI_MASTER static struct of_device_id mcp23s08_spi_of_match[] = { { - .compatible = "mcp,mcp23s08", .data = (void *) MCP_TYPE_S08, + .compatible = "microchip,mcp23s08", + .data = (void *) MCP_TYPE_S08, }, { - .compatible = "mcp,mcp23s17", .data = (void *) MCP_TYPE_S17, + .compatible = "microchip,mcp23s17", + .data = (void *) MCP_TYPE_S17, + }, +/* NOTE: The use of the mcp prefix is deprecated and will be removed. */ + { + .compatible = "mcp,mcp23s08", + .data = (void *) MCP_TYPE_S08, + }, + { + .compatible = "mcp,mcp23s17", + .data = (void *) MCP_TYPE_S17, }, { }, }; @@ -496,10 +507,21 @@ MODULE_DEVICE_TABLE(of, mcp23s08_spi_of_match); #if IS_ENABLED(CONFIG_I2C) static struct of_device_id mcp23s08_i2c_of_match[] = { { - .compatible = "mcp,mcp23008", .data = (void *) MCP_TYPE_008, + .compatible = "microchip,mcp23008", + .data = (void *) MCP_TYPE_008, + }, + { + .compatible = "microchip,mcp23017", + .data = (void *) MCP_TYPE_017, + }, +/* NOTE: The use of the mcp prefix is deprecated and will be removed. */ + { + .compatible = "mcp,mcp23008", + .data = (void *) MCP_TYPE_008, }, { - .compatible = "mcp,mcp23017", .data = (void *) MCP_TYPE_017, + .compatible = "mcp,mcp23017", + .data = (void *) MCP_TYPE_017, }, { }, }; @@ -520,14 +542,13 @@ static int mcp230xx_probe(struct i2c_client *client, match = of_match_device(of_match_ptr(mcp23s08_i2c_of_match), &client->dev); - if (match) { + pdata = dev_get_platdata(&client->dev); + if (match || !pdata) { base = -1; pullups = 0; } else { - pdata = client->dev.platform_data; - if (!pdata || !gpio_is_valid(pdata->base)) { - dev_dbg(&client->dev, - "invalid or missing platform data\n"); + if (!gpio_is_valid(pdata->base)) { + dev_dbg(&client->dev, "invalid platform data\n"); return -EINVAL; } base = pdata->base; @@ -621,10 +642,15 @@ static int mcp23s08_probe(struct spi_device *spi) if (match) { type = (int)match->data; status = of_property_read_u32(spi->dev.of_node, - "mcp,spi-present-mask", &spi_present_mask); + "microchip,spi-present-mask", &spi_present_mask); if (status) { - dev_err(&spi->dev, "DT has no spi-present-mask\n"); - return -ENODEV; + status = of_property_read_u32(spi->dev.of_node, + "mcp,spi-present-mask", &spi_present_mask); + if (status) { + dev_err(&spi->dev, + "DT has no spi-present-mask\n"); + return -ENODEV; + } } if ((spi_present_mask <= 0) || (spi_present_mask >= 256)) { dev_err(&spi->dev, "invalid spi-present-mask\n"); @@ -635,7 +661,7 @@ static int mcp23s08_probe(struct spi_device *spi) pullups[addr] = 0; } else { type = spi_get_device_id(spi)->driver_data; - pdata = spi->dev.platform_data; + pdata = dev_get_platdata(&spi->dev); if (!pdata || !gpio_is_valid(pdata->base)) { dev_dbg(&spi->dev, "invalid or missing platform data\n"); diff --git a/drivers/gpio/gpio-msic.c b/drivers/gpio/gpio-msic.c index 27ea7b9257ff..d75eaa3a1dcc 100644 --- a/drivers/gpio/gpio-msic.c +++ b/drivers/gpio/gpio-msic.c @@ -259,7 +259,7 @@ static void msic_gpio_irq_handler(unsigned irq, struct irq_desc *desc) static int platform_msic_gpio_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; - struct intel_msic_gpio_pdata *pdata = dev->platform_data; + struct intel_msic_gpio_pdata *pdata = dev_get_platdata(dev); struct msic_gpio *mg; int irq = platform_get_irq(pdev, 0); int retval; diff --git a/drivers/gpio/gpio-msm-v2.c b/drivers/gpio/gpio-msm-v2.c index c2fa77086eb5..f7a0cc4da950 100644 --- a/drivers/gpio/gpio-msm-v2.c +++ b/drivers/gpio/gpio-msm-v2.c @@ -106,7 +106,7 @@ struct msm_gpio_dev { void __iomem *msm_tlmm_base; }; -struct msm_gpio_dev msm_gpio; +static struct msm_gpio_dev msm_gpio; #define GPIO_INTR_CFG_SU(gpio) (msm_gpio.msm_tlmm_base + 0x0400 + \ (0x04 * (gpio))) diff --git a/drivers/gpio/gpio-mvebu.c b/drivers/gpio/gpio-mvebu.c index 80ad35e2a8cd..3c3321f94053 100644 --- a/drivers/gpio/gpio-mvebu.c +++ b/drivers/gpio/gpio-mvebu.c @@ -566,12 +566,6 @@ static int mvebu_gpio_probe(struct platform_device *pdev) else soc_variant = MVEBU_GPIO_SOC_VARIANT_ORION; - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - if (!res) { - dev_err(&pdev->dev, "Cannot get memory resource\n"); - return -ENODEV; - } - mvchip = devm_kzalloc(&pdev->dev, sizeof(struct mvebu_gpio_chip), GFP_KERNEL); if (!mvchip) { dev_err(&pdev->dev, "Cannot allocate memory\n"); @@ -611,6 +605,7 @@ static int mvebu_gpio_probe(struct platform_device *pdev) mvchip->chip.dbg_show = mvebu_gpio_dbg_show; spin_lock_init(&mvchip->lock); + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); mvchip->membase = devm_ioremap_resource(&pdev->dev, res); if (IS_ERR(mvchip->membase)) return PTR_ERR(mvchip->membase); diff --git a/drivers/gpio/gpio-mxc.c b/drivers/gpio/gpio-mxc.c index 7176743915d3..3307f6db3a92 100644 --- a/drivers/gpio/gpio-mxc.c +++ b/drivers/gpio/gpio-mxc.c @@ -19,6 +19,7 @@ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ +#include <linux/err.h> #include <linux/init.h> #include <linux/interrupt.h> #include <linux/io.h> @@ -291,6 +292,9 @@ static void mx2_gpio_irq_handler(u32 irq, struct irq_desc *desc) { u32 irq_msk, irq_stat; struct mxc_gpio_port *port; + struct irq_chip *chip = irq_get_chip(irq); + + chained_irq_enter(chip, desc); /* walk through all interrupt status registers */ list_for_each_entry(port, &mxc_gpio_ports, node) { @@ -302,6 +306,7 @@ static void mx2_gpio_irq_handler(u32 irq, struct irq_desc *desc) if (irq_stat) mxc_gpio_irq_handler(port, irq_stat); } + chained_irq_exit(chip, desc); } /* @@ -405,34 +410,19 @@ static int mxc_gpio_probe(struct platform_device *pdev) mxc_gpio_get_hw(pdev); - port = kzalloc(sizeof(struct mxc_gpio_port), GFP_KERNEL); + port = devm_kzalloc(&pdev->dev, sizeof(*port), GFP_KERNEL); if (!port) return -ENOMEM; iores = platform_get_resource(pdev, IORESOURCE_MEM, 0); - if (!iores) { - err = -ENODEV; - goto out_kfree; - } - - if (!request_mem_region(iores->start, resource_size(iores), - pdev->name)) { - err = -EBUSY; - goto out_kfree; - } - - port->base = ioremap(iores->start, resource_size(iores)); - if (!port->base) { - err = -ENOMEM; - goto out_release_mem; - } + port->base = devm_ioremap_resource(&pdev->dev, iores); + if (IS_ERR(port->base)) + return PTR_ERR(port->base); port->irq_high = platform_get_irq(pdev, 1); port->irq = platform_get_irq(pdev, 0); - if (port->irq < 0) { - err = -EINVAL; - goto out_iounmap; - } + if (port->irq < 0) + return -EINVAL; /* disable the interrupt and clear the status */ writel(0, port->base + GPIO_IMR); @@ -462,7 +452,7 @@ static int mxc_gpio_probe(struct platform_device *pdev) port->base + GPIO_DR, NULL, port->base + GPIO_GDIR, NULL, 0); if (err) - goto out_iounmap; + goto out_bgio; port->bgc.gc.to_irq = mxc_gpio_to_irq; port->bgc.gc.base = (pdev->id < 0) ? of_alias_get_id(np, "gpio") * 32 : @@ -498,12 +488,7 @@ out_gpiochip_remove: WARN_ON(gpiochip_remove(&port->bgc.gc) < 0); out_bgpio_remove: bgpio_remove(&port->bgc); -out_iounmap: - iounmap(port->base); -out_release_mem: - release_mem_region(iores->start, resource_size(iores)); -out_kfree: - kfree(port); +out_bgio: dev_info(&pdev->dev, "%s failed with errno %d\n", __func__, err); return err; } diff --git a/drivers/gpio/gpio-omap.c b/drivers/gpio/gpio-omap.c index dfeb3a3a8f20..0ff43552d472 100644 --- a/drivers/gpio/gpio-omap.c +++ b/drivers/gpio/gpio-omap.c @@ -1030,7 +1030,7 @@ omap_mpuio_alloc_gc(struct gpio_bank *bank, unsigned int irq_start, ct->chip.irq_set_type = gpio_irq_type; if (bank->regs->wkup_en) - ct->chip.irq_set_wake = gpio_wake_enable, + ct->chip.irq_set_wake = gpio_wake_enable; ct->regs.mask = OMAP_MPUIO_GPIO_INT / bank->stride; irq_setup_generic_chip(gc, IRQ_MSK(num), IRQ_GC_INIT_MASK_CACHE, @@ -1100,7 +1100,7 @@ static int omap_gpio_probe(struct platform_device *pdev) match = of_match_device(of_match_ptr(omap_gpio_match), dev); - pdata = match ? match->data : dev->platform_data; + pdata = match ? match->data : dev_get_platdata(dev); if (!pdata) return -EINVAL; diff --git a/drivers/gpio/gpio-palmas.c b/drivers/gpio/gpio-palmas.c index e3a4e56f5a42..8588af0f7661 100644 --- a/drivers/gpio/gpio-palmas.c +++ b/drivers/gpio/gpio-palmas.c @@ -43,9 +43,22 @@ static int palmas_gpio_get(struct gpio_chip *gc, unsigned offset) unsigned int val; int ret; - ret = palmas_read(palmas, PALMAS_GPIO_BASE, PALMAS_GPIO_DATA_IN, &val); + ret = palmas_read(palmas, PALMAS_GPIO_BASE, PALMAS_GPIO_DATA_DIR, &val); if (ret < 0) { - dev_err(gc->dev, "GPIO_DATA_IN read failed, err = %d\n", ret); + dev_err(gc->dev, "GPIO_DATA_DIR read failed, err = %d\n", ret); + return ret; + } + + if (val & (1 << offset)) { + ret = palmas_read(palmas, PALMAS_GPIO_BASE, + PALMAS_GPIO_DATA_OUT, &val); + } else { + ret = palmas_read(palmas, PALMAS_GPIO_BASE, + PALMAS_GPIO_DATA_IN, &val); + } + if (ret < 0) { + dev_err(gc->dev, "GPIO_DATA_IN/OUT read failed, err = %d\n", + ret); return ret; } return !!(val & BIT(offset)); @@ -134,7 +147,7 @@ static int palmas_gpio_probe(struct platform_device *pdev) palmas_gpio->gpio_chip.get = palmas_gpio_get; palmas_gpio->gpio_chip.dev = &pdev->dev; #ifdef CONFIG_OF_GPIO - palmas_gpio->gpio_chip.of_node = palmas->dev->of_node; + palmas_gpio->gpio_chip.of_node = pdev->dev.of_node; #endif palmas_pdata = dev_get_platdata(palmas->dev); if (palmas_pdata && palmas_pdata->gpio_base) @@ -159,9 +172,19 @@ static int palmas_gpio_remove(struct platform_device *pdev) return gpiochip_remove(&palmas_gpio->gpio_chip); } +static struct of_device_id of_palmas_gpio_match[] = { + { .compatible = "ti,palmas-gpio"}, + { .compatible = "ti,tps65913-gpio"}, + { .compatible = "ti,tps65914-gpio"}, + { .compatible = "ti,tps80036-gpio"}, + { }, +}; +MODULE_DEVICE_TABLE(of, of_palmas_gpio_match); + static struct platform_driver palmas_gpio_driver = { .driver.name = "palmas-gpio", .driver.owner = THIS_MODULE, + .driver.of_match_table = of_palmas_gpio_match, .probe = palmas_gpio_probe, .remove = palmas_gpio_remove, }; diff --git a/drivers/gpio/gpio-pca953x.c b/drivers/gpio/gpio-pca953x.c index 8804aec2950f..cdd1aa12b895 100644 --- a/drivers/gpio/gpio-pca953x.c +++ b/drivers/gpio/gpio-pca953x.c @@ -308,7 +308,7 @@ static int pca953x_gpio_get_value(struct gpio_chip *gc, unsigned off) return 0; } - return (reg_val & (1u << off)) ? 1 : 0; + return (reg_val & (1u << (off % BANK_SZ))) ? 1 : 0; } static void pca953x_gpio_set_value(struct gpio_chip *gc, unsigned off, int val) @@ -731,7 +731,7 @@ static int pca953x_probe(struct i2c_client *client, if (chip == NULL) return -ENOMEM; - pdata = client->dev.platform_data; + pdata = dev_get_platdata(&client->dev); if (pdata) { irq_base = pdata->irq_base; chip->gpio_start = pdata->gpio_base; @@ -785,7 +785,7 @@ static int pca953x_probe(struct i2c_client *client, static int pca953x_remove(struct i2c_client *client) { - struct pca953x_platform_data *pdata = client->dev.platform_data; + struct pca953x_platform_data *pdata = dev_get_platdata(&client->dev); struct pca953x_chip *chip = i2c_get_clientdata(client); int ret = 0; diff --git a/drivers/gpio/gpio-pcf857x.c b/drivers/gpio/gpio-pcf857x.c index e8faf53f3875..9e61bb0719d0 100644 --- a/drivers/gpio/gpio-pcf857x.c +++ b/drivers/gpio/gpio-pcf857x.c @@ -18,15 +18,15 @@ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ -#include <linux/kernel.h> -#include <linux/slab.h> #include <linux/gpio.h> #include <linux/i2c.h> #include <linux/i2c/pcf857x.h> #include <linux/interrupt.h> #include <linux/irq.h> #include <linux/irqdomain.h> +#include <linux/kernel.h> #include <linux/module.h> +#include <linux/slab.h> #include <linux/spinlock.h> #include <linux/workqueue.h> @@ -223,7 +223,6 @@ static void pcf857x_irq_domain_cleanup(struct pcf857x *gpio) } static int pcf857x_irq_domain_init(struct pcf857x *gpio, - struct pcf857x_platform_data *pdata, struct i2c_client *client) { int status; @@ -262,7 +261,7 @@ static int pcf857x_probe(struct i2c_client *client, struct pcf857x *gpio; int status; - pdata = client->dev.platform_data; + pdata = dev_get_platdata(&client->dev); if (!pdata) { dev_dbg(&client->dev, "no platform data\n"); } @@ -286,8 +285,8 @@ static int pcf857x_probe(struct i2c_client *client, gpio->chip.ngpio = id->driver_data; /* enable gpio_to_irq() if platform has settings */ - if (pdata && client->irq) { - status = pcf857x_irq_domain_init(gpio, pdata, client); + if (client->irq) { + status = pcf857x_irq_domain_init(gpio, client); if (status < 0) { dev_err(&client->dev, "irq_domain init failed\n"); goto fail; @@ -388,7 +387,7 @@ fail: dev_dbg(&client->dev, "probe error %d for '%s'\n", status, client->name); - if (pdata && client->irq) + if (client->irq) pcf857x_irq_domain_cleanup(gpio); return status; @@ -396,7 +395,7 @@ fail: static int pcf857x_remove(struct i2c_client *client) { - struct pcf857x_platform_data *pdata = client->dev.platform_data; + struct pcf857x_platform_data *pdata = dev_get_platdata(&client->dev); struct pcf857x *gpio = i2c_get_clientdata(client); int status = 0; @@ -411,7 +410,7 @@ static int pcf857x_remove(struct i2c_client *client) } } - if (pdata && client->irq) + if (client->irq) pcf857x_irq_domain_cleanup(gpio); status = gpiochip_remove(&gpio->chip); diff --git a/drivers/gpio/gpio-pl061.c b/drivers/gpio/gpio-pl061.c index 6a4bd0dae0ce..4274e2e70ef8 100644 --- a/drivers/gpio/gpio-pl061.c +++ b/drivers/gpio/gpio-pl061.c @@ -259,7 +259,7 @@ static const struct irq_domain_ops pl061_domain_ops = { static int pl061_probe(struct amba_device *adev, const struct amba_id *id) { struct device *dev = &adev->dev; - struct pl061_platform_data *pdata = dev->platform_data; + struct pl061_platform_data *pdata = dev_get_platdata(dev); struct pl061_gpio *chip; int ret, irq, i, irq_base; diff --git a/drivers/gpio/gpio-pxa.c b/drivers/gpio/gpio-pxa.c index df2199dd1499..cc13d1b74fad 100644 --- a/drivers/gpio/gpio-pxa.c +++ b/drivers/gpio/gpio-pxa.c @@ -524,8 +524,8 @@ const struct irq_domain_ops pxa_irq_domain_ops = { static int pxa_gpio_probe_dt(struct platform_device *pdev) { - int ret, nr_gpios; - struct device_node *prev, *next, *np = pdev->dev.of_node; + int ret = 0, nr_gpios; + struct device_node *np = pdev->dev.of_node; const struct of_device_id *of_id = of_match_device(pxa_gpio_dt_ids, &pdev->dev); const struct pxa_gpio_id *gpio_id; @@ -537,20 +537,13 @@ static int pxa_gpio_probe_dt(struct platform_device *pdev) gpio_id = of_id->data; gpio_type = gpio_id->type; - next = of_get_next_child(np, NULL); - prev = next; - if (!next) { - dev_err(&pdev->dev, "Failed to find child gpio node\n"); - ret = -EINVAL; - goto err; - } - of_node_put(prev); nr_gpios = gpio_id->gpio_nums; pxa_last_gpio = nr_gpios - 1; irq_base = irq_alloc_descs(-1, 0, nr_gpios, 0); if (irq_base < 0) { dev_err(&pdev->dev, "Failed to allocate IRQ numbers\n"); + ret = irq_base; goto err; } domain = irq_domain_add_legacy(np, nr_gpios, irq_base, 0, diff --git a/drivers/gpio/gpio-rcar.c b/drivers/gpio/gpio-rcar.c index e8198dd68615..e3745eb07570 100644 --- a/drivers/gpio/gpio-rcar.c +++ b/drivers/gpio/gpio-rcar.c @@ -285,7 +285,7 @@ static struct irq_domain_ops gpio_rcar_irq_domain_ops = { static void gpio_rcar_parse_pdata(struct gpio_rcar_priv *p) { - struct gpio_rcar_config *pdata = p->pdev->dev.platform_data; + struct gpio_rcar_config *pdata = dev_get_platdata(&p->pdev->dev); struct device_node *np = p->pdev->dev.of_node; struct of_phandle_args args; int ret; diff --git a/drivers/gpio/gpio-rdc321x.c b/drivers/gpio/gpio-rdc321x.c index 368c3c00fca5..88577c3272a5 100644 --- a/drivers/gpio/gpio-rdc321x.c +++ b/drivers/gpio/gpio-rdc321x.c @@ -135,7 +135,7 @@ static int rdc321x_gpio_probe(struct platform_device *pdev) struct rdc321x_gpio *rdc321x_gpio_dev; struct rdc321x_gpio_pdata *pdata; - pdata = pdev->dev.platform_data; + pdata = dev_get_platdata(&pdev->dev); if (!pdata) { dev_err(&pdev->dev, "no platform data supplied\n"); return -ENODEV; diff --git a/drivers/gpio/gpio-samsung.c b/drivers/gpio/gpio-samsung.c index a1392f47bbda..358a21c2d811 100644 --- a/drivers/gpio/gpio-samsung.c +++ b/drivers/gpio/gpio-samsung.c @@ -161,28 +161,6 @@ int s3c24xx_gpio_setpull_1down(struct samsung_gpio_chip *chip, return s3c24xx_gpio_setpull_1(chip, off, pull, S3C_GPIO_PULL_DOWN); } -static int exynos_gpio_setpull(struct samsung_gpio_chip *chip, - unsigned int off, samsung_gpio_pull_t pull) -{ - if (pull == S3C_GPIO_PULL_UP) - pull = 3; - - return samsung_gpio_setpull_updown(chip, off, pull); -} - -static samsung_gpio_pull_t exynos_gpio_getpull(struct samsung_gpio_chip *chip, - unsigned int off) -{ - samsung_gpio_pull_t pull; - - pull = samsung_gpio_getpull_updown(chip, off); - - if (pull == 3) - pull = S3C_GPIO_PULL_UP; - - return pull; -} - /* * samsung_gpio_setcfg_2bit - Samsung 2bit style GPIO configuration. * @chip: The gpio chip that is being configured. @@ -444,15 +422,6 @@ static struct samsung_gpio_cfg s3c24xx_gpiocfg_banka = { }; #endif -#if defined(CONFIG_ARCH_EXYNOS4) || defined(CONFIG_SOC_EXYNOS5250) -static struct samsung_gpio_cfg exynos_gpio_cfg = { - .set_pull = exynos_gpio_setpull, - .get_pull = exynos_gpio_getpull, - .set_config = samsung_gpio_setcfg_4bit, - .get_config = samsung_gpio_getcfg_4bit, -}; -#endif - #if defined(CONFIG_CPU_S5P6440) || defined(CONFIG_CPU_S5P6450) static struct samsung_gpio_cfg s5p64x0_gpio_cfg_rbank = { .cfg_eint = 0x3, @@ -495,15 +464,6 @@ static struct samsung_gpio_cfg samsung_gpio_cfgs[] = { .set_config = samsung_gpio_setcfg_2bit, .get_config = samsung_gpio_getcfg_2bit, }, - [8] = { - .set_pull = exynos_gpio_setpull, - .get_pull = exynos_gpio_getpull, - }, - [9] = { - .cfg_eint = 0x3, - .set_pull = exynos_gpio_setpull, - .get_pull = exynos_gpio_getpull, - } }; /* @@ -2115,833 +2075,6 @@ static struct samsung_gpio_chip s5pv210_gpios_4bit[] = { #endif }; -/* - * Followings are the gpio banks in EXYNOS SoCs - * - * The 'config' member when left to NULL, is initialized to the default - * structure exynos_gpio_cfg in the init function below. - * - * The 'base' member is also initialized in the init function below. - * Note: The initialization of 'base' member of samsung_gpio_chip structure - * uses the above macro and depends on the banks being listed in order here. - */ - -#ifdef CONFIG_ARCH_EXYNOS4 -static struct samsung_gpio_chip exynos4_gpios_1[] = { - { - .chip = { - .base = EXYNOS4_GPA0(0), - .ngpio = EXYNOS4_GPIO_A0_NR, - .label = "GPA0", - }, - }, { - .chip = { - .base = EXYNOS4_GPA1(0), - .ngpio = EXYNOS4_GPIO_A1_NR, - .label = "GPA1", - }, - }, { - .chip = { - .base = EXYNOS4_GPB(0), - .ngpio = EXYNOS4_GPIO_B_NR, - .label = "GPB", - }, - }, { - .chip = { - .base = EXYNOS4_GPC0(0), - .ngpio = EXYNOS4_GPIO_C0_NR, - .label = "GPC0", - }, - }, { - .chip = { - .base = EXYNOS4_GPC1(0), - .ngpio = EXYNOS4_GPIO_C1_NR, - .label = "GPC1", - }, - }, { - .chip = { - .base = EXYNOS4_GPD0(0), - .ngpio = EXYNOS4_GPIO_D0_NR, - .label = "GPD0", - }, - }, { - .chip = { - .base = EXYNOS4_GPD1(0), - .ngpio = EXYNOS4_GPIO_D1_NR, - .label = "GPD1", - }, - }, { - .chip = { - .base = EXYNOS4_GPE0(0), - .ngpio = EXYNOS4_GPIO_E0_NR, - .label = "GPE0", - }, - }, { - .chip = { - .base = EXYNOS4_GPE1(0), - .ngpio = EXYNOS4_GPIO_E1_NR, - .label = "GPE1", - }, - }, { - .chip = { - .base = EXYNOS4_GPE2(0), - .ngpio = EXYNOS4_GPIO_E2_NR, - .label = "GPE2", - }, - }, { - .chip = { - .base = EXYNOS4_GPE3(0), - .ngpio = EXYNOS4_GPIO_E3_NR, - .label = "GPE3", - }, - }, { - .chip = { - .base = EXYNOS4_GPE4(0), - .ngpio = EXYNOS4_GPIO_E4_NR, - .label = "GPE4", - }, - }, { - .chip = { - .base = EXYNOS4_GPF0(0), - .ngpio = EXYNOS4_GPIO_F0_NR, - .label = "GPF0", - }, - }, { - .chip = { - .base = EXYNOS4_GPF1(0), - .ngpio = EXYNOS4_GPIO_F1_NR, - .label = "GPF1", - }, - }, { - .chip = { - .base = EXYNOS4_GPF2(0), - .ngpio = EXYNOS4_GPIO_F2_NR, - .label = "GPF2", - }, - }, { - .chip = { - .base = EXYNOS4_GPF3(0), - .ngpio = EXYNOS4_GPIO_F3_NR, - .label = "GPF3", - }, - }, -}; -#endif - -#ifdef CONFIG_ARCH_EXYNOS4 -static struct samsung_gpio_chip exynos4_gpios_2[] = { - { - .chip = { - .base = EXYNOS4_GPJ0(0), - .ngpio = EXYNOS4_GPIO_J0_NR, - .label = "GPJ0", - }, - }, { - .chip = { - .base = EXYNOS4_GPJ1(0), - .ngpio = EXYNOS4_GPIO_J1_NR, - .label = "GPJ1", - }, - }, { - .chip = { - .base = EXYNOS4_GPK0(0), - .ngpio = EXYNOS4_GPIO_K0_NR, - .label = "GPK0", - }, - }, { - .chip = { - .base = EXYNOS4_GPK1(0), - .ngpio = EXYNOS4_GPIO_K1_NR, - .label = "GPK1", - }, - }, { - .chip = { - .base = EXYNOS4_GPK2(0), - .ngpio = EXYNOS4_GPIO_K2_NR, - .label = "GPK2", - }, - }, { - .chip = { - .base = EXYNOS4_GPK3(0), - .ngpio = EXYNOS4_GPIO_K3_NR, - .label = "GPK3", - }, - }, { - .chip = { - .base = EXYNOS4_GPL0(0), - .ngpio = EXYNOS4_GPIO_L0_NR, - .label = "GPL0", - }, - }, { - .chip = { - .base = EXYNOS4_GPL1(0), - .ngpio = EXYNOS4_GPIO_L1_NR, - .label = "GPL1", - }, - }, { - .chip = { - .base = EXYNOS4_GPL2(0), - .ngpio = EXYNOS4_GPIO_L2_NR, - .label = "GPL2", - }, - }, { - .config = &samsung_gpio_cfgs[8], - .chip = { - .base = EXYNOS4_GPY0(0), - .ngpio = EXYNOS4_GPIO_Y0_NR, - .label = "GPY0", - }, - }, { - .config = &samsung_gpio_cfgs[8], - .chip = { - .base = EXYNOS4_GPY1(0), - .ngpio = EXYNOS4_GPIO_Y1_NR, - .label = "GPY1", - }, - }, { - .config = &samsung_gpio_cfgs[8], - .chip = { - .base = EXYNOS4_GPY2(0), - .ngpio = EXYNOS4_GPIO_Y2_NR, - .label = "GPY2", - }, - }, { - .config = &samsung_gpio_cfgs[8], - .chip = { - .base = EXYNOS4_GPY3(0), - .ngpio = EXYNOS4_GPIO_Y3_NR, - .label = "GPY3", - }, - }, { - .config = &samsung_gpio_cfgs[8], - .chip = { - .base = EXYNOS4_GPY4(0), - .ngpio = EXYNOS4_GPIO_Y4_NR, - .label = "GPY4", - }, - }, { - .config = &samsung_gpio_cfgs[8], - .chip = { - .base = EXYNOS4_GPY5(0), - .ngpio = EXYNOS4_GPIO_Y5_NR, - .label = "GPY5", - }, - }, { - .config = &samsung_gpio_cfgs[8], - .chip = { - .base = EXYNOS4_GPY6(0), - .ngpio = EXYNOS4_GPIO_Y6_NR, - .label = "GPY6", - }, - }, { - .config = &samsung_gpio_cfgs[9], - .irq_base = IRQ_EINT(0), - .chip = { - .base = EXYNOS4_GPX0(0), - .ngpio = EXYNOS4_GPIO_X0_NR, - .label = "GPX0", - .to_irq = samsung_gpiolib_to_irq, - }, - }, { - .config = &samsung_gpio_cfgs[9], - .irq_base = IRQ_EINT(8), - .chip = { - .base = EXYNOS4_GPX1(0), - .ngpio = EXYNOS4_GPIO_X1_NR, - .label = "GPX1", - .to_irq = samsung_gpiolib_to_irq, - }, - }, { - .config = &samsung_gpio_cfgs[9], - .irq_base = IRQ_EINT(16), - .chip = { - .base = EXYNOS4_GPX2(0), - .ngpio = EXYNOS4_GPIO_X2_NR, - .label = "GPX2", - .to_irq = samsung_gpiolib_to_irq, - }, - }, { - .config = &samsung_gpio_cfgs[9], - .irq_base = IRQ_EINT(24), - .chip = { - .base = EXYNOS4_GPX3(0), - .ngpio = EXYNOS4_GPIO_X3_NR, - .label = "GPX3", - .to_irq = samsung_gpiolib_to_irq, - }, - }, -}; -#endif - -#ifdef CONFIG_ARCH_EXYNOS4 -static struct samsung_gpio_chip exynos4_gpios_3[] = { - { - .chip = { - .base = EXYNOS4_GPZ(0), - .ngpio = EXYNOS4_GPIO_Z_NR, - .label = "GPZ", - }, - }, -}; -#endif - -#ifdef CONFIG_SOC_EXYNOS5250 -static struct samsung_gpio_chip exynos5_gpios_1[] = { - { - .chip = { - .base = EXYNOS5_GPA0(0), - .ngpio = EXYNOS5_GPIO_A0_NR, - .label = "GPA0", - }, - }, { - .chip = { - .base = EXYNOS5_GPA1(0), - .ngpio = EXYNOS5_GPIO_A1_NR, - .label = "GPA1", - }, - }, { - .chip = { - .base = EXYNOS5_GPA2(0), - .ngpio = EXYNOS5_GPIO_A2_NR, - .label = "GPA2", - }, - }, { - .chip = { - .base = EXYNOS5_GPB0(0), - .ngpio = EXYNOS5_GPIO_B0_NR, - .label = "GPB0", - }, - }, { - .chip = { - .base = EXYNOS5_GPB1(0), - .ngpio = EXYNOS5_GPIO_B1_NR, - .label = "GPB1", - }, - }, { - .chip = { - .base = EXYNOS5_GPB2(0), - .ngpio = EXYNOS5_GPIO_B2_NR, - .label = "GPB2", - }, - }, { - .chip = { - .base = EXYNOS5_GPB3(0), - .ngpio = EXYNOS5_GPIO_B3_NR, - .label = "GPB3", - }, - }, { - .chip = { - .base = EXYNOS5_GPC0(0), - .ngpio = EXYNOS5_GPIO_C0_NR, - .label = "GPC0", - }, - }, { - .chip = { - .base = EXYNOS5_GPC1(0), - .ngpio = EXYNOS5_GPIO_C1_NR, - .label = "GPC1", - }, - }, { - .chip = { - .base = EXYNOS5_GPC2(0), - .ngpio = EXYNOS5_GPIO_C2_NR, - .label = "GPC2", - }, - }, { - .chip = { - .base = EXYNOS5_GPC3(0), - .ngpio = EXYNOS5_GPIO_C3_NR, - .label = "GPC3", - }, - }, { - .chip = { - .base = EXYNOS5_GPD0(0), - .ngpio = EXYNOS5_GPIO_D0_NR, - .label = "GPD0", - }, - }, { - .chip = { - .base = EXYNOS5_GPD1(0), - .ngpio = EXYNOS5_GPIO_D1_NR, - .label = "GPD1", - }, - }, { - .chip = { - .base = EXYNOS5_GPY0(0), - .ngpio = EXYNOS5_GPIO_Y0_NR, - .label = "GPY0", - }, - }, { - .chip = { - .base = EXYNOS5_GPY1(0), - .ngpio = EXYNOS5_GPIO_Y1_NR, - .label = "GPY1", - }, - }, { - .chip = { - .base = EXYNOS5_GPY2(0), - .ngpio = EXYNOS5_GPIO_Y2_NR, - .label = "GPY2", - }, - }, { - .chip = { - .base = EXYNOS5_GPY3(0), - .ngpio = EXYNOS5_GPIO_Y3_NR, - .label = "GPY3", - }, - }, { - .chip = { - .base = EXYNOS5_GPY4(0), - .ngpio = EXYNOS5_GPIO_Y4_NR, - .label = "GPY4", - }, - }, { - .chip = { - .base = EXYNOS5_GPY5(0), - .ngpio = EXYNOS5_GPIO_Y5_NR, - .label = "GPY5", - }, - }, { - .chip = { - .base = EXYNOS5_GPY6(0), - .ngpio = EXYNOS5_GPIO_Y6_NR, - .label = "GPY6", - }, - }, { - .chip = { - .base = EXYNOS5_GPC4(0), - .ngpio = EXYNOS5_GPIO_C4_NR, - .label = "GPC4", - }, - }, { - .config = &samsung_gpio_cfgs[9], - .irq_base = IRQ_EINT(0), - .chip = { - .base = EXYNOS5_GPX0(0), - .ngpio = EXYNOS5_GPIO_X0_NR, - .label = "GPX0", - .to_irq = samsung_gpiolib_to_irq, - }, - }, { - .config = &samsung_gpio_cfgs[9], - .irq_base = IRQ_EINT(8), - .chip = { - .base = EXYNOS5_GPX1(0), - .ngpio = EXYNOS5_GPIO_X1_NR, - .label = "GPX1", - .to_irq = samsung_gpiolib_to_irq, - }, - }, { - .config = &samsung_gpio_cfgs[9], - .irq_base = IRQ_EINT(16), - .chip = { - .base = EXYNOS5_GPX2(0), - .ngpio = EXYNOS5_GPIO_X2_NR, - .label = "GPX2", - .to_irq = samsung_gpiolib_to_irq, - }, - }, { - .config = &samsung_gpio_cfgs[9], - .irq_base = IRQ_EINT(24), - .chip = { - .base = EXYNOS5_GPX3(0), - .ngpio = EXYNOS5_GPIO_X3_NR, - .label = "GPX3", - .to_irq = samsung_gpiolib_to_irq, - }, - }, -}; -#endif - -#ifdef CONFIG_SOC_EXYNOS5250 -static struct samsung_gpio_chip exynos5_gpios_2[] = { - { - .chip = { - .base = EXYNOS5_GPE0(0), - .ngpio = EXYNOS5_GPIO_E0_NR, - .label = "GPE0", - }, - }, { - .chip = { - .base = EXYNOS5_GPE1(0), - .ngpio = EXYNOS5_GPIO_E1_NR, - .label = "GPE1", - }, - }, { - .chip = { - .base = EXYNOS5_GPF0(0), - .ngpio = EXYNOS5_GPIO_F0_NR, - .label = "GPF0", - }, - }, { - .chip = { - .base = EXYNOS5_GPF1(0), - .ngpio = EXYNOS5_GPIO_F1_NR, - .label = "GPF1", - }, - }, { - .chip = { - .base = EXYNOS5_GPG0(0), - .ngpio = EXYNOS5_GPIO_G0_NR, - .label = "GPG0", - }, - }, { - .chip = { - .base = EXYNOS5_GPG1(0), - .ngpio = EXYNOS5_GPIO_G1_NR, - .label = "GPG1", - }, - }, { - .chip = { - .base = EXYNOS5_GPG2(0), - .ngpio = EXYNOS5_GPIO_G2_NR, - .label = "GPG2", - }, - }, { - .chip = { - .base = EXYNOS5_GPH0(0), - .ngpio = EXYNOS5_GPIO_H0_NR, - .label = "GPH0", - }, - }, { - .chip = { - .base = EXYNOS5_GPH1(0), - .ngpio = EXYNOS5_GPIO_H1_NR, - .label = "GPH1", - - }, - }, -}; -#endif - -#ifdef CONFIG_SOC_EXYNOS5250 -static struct samsung_gpio_chip exynos5_gpios_3[] = { - { - .chip = { - .base = EXYNOS5_GPV0(0), - .ngpio = EXYNOS5_GPIO_V0_NR, - .label = "GPV0", - }, - }, { - .chip = { - .base = EXYNOS5_GPV1(0), - .ngpio = EXYNOS5_GPIO_V1_NR, - .label = "GPV1", - }, - }, { - .chip = { - .base = EXYNOS5_GPV2(0), - .ngpio = EXYNOS5_GPIO_V2_NR, - .label = "GPV2", - }, - }, { - .chip = { - .base = EXYNOS5_GPV3(0), - .ngpio = EXYNOS5_GPIO_V3_NR, - .label = "GPV3", - }, - }, { - .chip = { - .base = EXYNOS5_GPV4(0), - .ngpio = EXYNOS5_GPIO_V4_NR, - .label = "GPV4", - }, - }, -}; -#endif - -#ifdef CONFIG_SOC_EXYNOS5250 -static struct samsung_gpio_chip exynos5_gpios_4[] = { - { - .chip = { - .base = EXYNOS5_GPZ(0), - .ngpio = EXYNOS5_GPIO_Z_NR, - .label = "GPZ", - }, - }, -}; -#endif - - -#if defined(CONFIG_ARCH_EXYNOS) && defined(CONFIG_OF) -static int exynos_gpio_xlate(struct gpio_chip *gc, - const struct of_phandle_args *gpiospec, u32 *flags) -{ - unsigned int pin; - - if (WARN_ON(gc->of_gpio_n_cells < 4)) - return -EINVAL; - - if (WARN_ON(gpiospec->args_count < gc->of_gpio_n_cells)) - return -EINVAL; - - if (gpiospec->args[0] > gc->ngpio) - return -EINVAL; - - pin = gc->base + gpiospec->args[0]; - - if (s3c_gpio_cfgpin(pin, S3C_GPIO_SFN(gpiospec->args[1]))) - pr_warn("gpio_xlate: failed to set pin function\n"); - if (s3c_gpio_setpull(pin, gpiospec->args[2] & 0xffff)) - pr_warn("gpio_xlate: failed to set pin pull up/down\n"); - if (s5p_gpio_set_drvstr(pin, gpiospec->args[3])) - pr_warn("gpio_xlate: failed to set pin drive strength\n"); - - if (flags) - *flags = gpiospec->args[2] >> 16; - - return gpiospec->args[0]; -} - -static const struct of_device_id exynos_gpio_dt_match[] __initdata = { - { .compatible = "samsung,exynos4-gpio", }, - {} -}; - -static __init void exynos_gpiolib_attach_ofnode(struct samsung_gpio_chip *chip, - u64 base, u64 offset) -{ - struct gpio_chip *gc = &chip->chip; - u64 address; - - if (!of_have_populated_dt()) - return; - - address = chip->base ? base + ((u32)chip->base & 0xfff) : base + offset; - gc->of_node = of_find_matching_node_by_address(NULL, - exynos_gpio_dt_match, address); - if (!gc->of_node) { - pr_info("gpio: device tree node not found for gpio controller" - " with base address %08llx\n", address); - return; - } - gc->of_gpio_n_cells = 4; - gc->of_xlate = exynos_gpio_xlate; -} -#elif defined(CONFIG_ARCH_EXYNOS) -static __init void exynos_gpiolib_attach_ofnode(struct samsung_gpio_chip *chip, - u64 base, u64 offset) -{ - return; -} -#endif /* defined(CONFIG_ARCH_EXYNOS) && defined(CONFIG_OF) */ - -static __init void exynos4_gpiolib_init(void) -{ -#ifdef CONFIG_CPU_EXYNOS4210 - struct samsung_gpio_chip *chip; - int i, nr_chips; - void __iomem *gpio_base1, *gpio_base2, *gpio_base3; - int group = 0; - void __iomem *gpx_base; - - /* gpio part1 */ - gpio_base1 = ioremap(EXYNOS4_PA_GPIO1, SZ_4K); - if (gpio_base1 == NULL) { - pr_err("unable to ioremap for gpio_base1\n"); - goto err_ioremap1; - } - - chip = exynos4_gpios_1; - nr_chips = ARRAY_SIZE(exynos4_gpios_1); - - for (i = 0; i < nr_chips; i++, chip++) { - if (!chip->config) { - chip->config = &exynos_gpio_cfg; - chip->group = group++; - } - exynos_gpiolib_attach_ofnode(chip, - EXYNOS4_PA_GPIO1, i * 0x20); - } - samsung_gpiolib_add_4bit_chips(exynos4_gpios_1, - nr_chips, gpio_base1); - - /* gpio part2 */ - gpio_base2 = ioremap(EXYNOS4_PA_GPIO2, SZ_4K); - if (gpio_base2 == NULL) { - pr_err("unable to ioremap for gpio_base2\n"); - goto err_ioremap2; - } - - /* need to set base address for gpx */ - chip = &exynos4_gpios_2[16]; - gpx_base = gpio_base2 + 0xC00; - for (i = 0; i < 4; i++, chip++, gpx_base += 0x20) - chip->base = gpx_base; - - chip = exynos4_gpios_2; - nr_chips = ARRAY_SIZE(exynos4_gpios_2); - - for (i = 0; i < nr_chips; i++, chip++) { - if (!chip->config) { - chip->config = &exynos_gpio_cfg; - chip->group = group++; - } - exynos_gpiolib_attach_ofnode(chip, - EXYNOS4_PA_GPIO2, i * 0x20); - } - samsung_gpiolib_add_4bit_chips(exynos4_gpios_2, - nr_chips, gpio_base2); - - /* gpio part3 */ - gpio_base3 = ioremap(EXYNOS4_PA_GPIO3, SZ_256); - if (gpio_base3 == NULL) { - pr_err("unable to ioremap for gpio_base3\n"); - goto err_ioremap3; - } - - chip = exynos4_gpios_3; - nr_chips = ARRAY_SIZE(exynos4_gpios_3); - - for (i = 0; i < nr_chips; i++, chip++) { - if (!chip->config) { - chip->config = &exynos_gpio_cfg; - chip->group = group++; - } - exynos_gpiolib_attach_ofnode(chip, - EXYNOS4_PA_GPIO3, i * 0x20); - } - samsung_gpiolib_add_4bit_chips(exynos4_gpios_3, - nr_chips, gpio_base3); - -#if defined(CONFIG_CPU_EXYNOS4210) && defined(CONFIG_S5P_GPIO_INT) - s5p_register_gpioint_bank(IRQ_GPIO_XA, 0, IRQ_GPIO1_NR_GROUPS); - s5p_register_gpioint_bank(IRQ_GPIO_XB, IRQ_GPIO1_NR_GROUPS, IRQ_GPIO2_NR_GROUPS); -#endif - - return; - -err_ioremap3: - iounmap(gpio_base2); -err_ioremap2: - iounmap(gpio_base1); -err_ioremap1: - return; -#endif /* CONFIG_CPU_EXYNOS4210 */ -} - -static __init void exynos5_gpiolib_init(void) -{ -#ifdef CONFIG_SOC_EXYNOS5250 - struct samsung_gpio_chip *chip; - int i, nr_chips; - void __iomem *gpio_base1, *gpio_base2, *gpio_base3, *gpio_base4; - int group = 0; - void __iomem *gpx_base; - - /* gpio part1 */ - gpio_base1 = ioremap(EXYNOS5_PA_GPIO1, SZ_4K); - if (gpio_base1 == NULL) { - pr_err("unable to ioremap for gpio_base1\n"); - goto err_ioremap1; - } - - /* need to set base address for gpc4 */ - exynos5_gpios_1[20].base = gpio_base1 + 0x2E0; - - /* need to set base address for gpx */ - chip = &exynos5_gpios_1[21]; - gpx_base = gpio_base1 + 0xC00; - for (i = 0; i < 4; i++, chip++, gpx_base += 0x20) - chip->base = gpx_base; - - chip = exynos5_gpios_1; - nr_chips = ARRAY_SIZE(exynos5_gpios_1); - - for (i = 0; i < nr_chips; i++, chip++) { - if (!chip->config) { - chip->config = &exynos_gpio_cfg; - chip->group = group++; - } - exynos_gpiolib_attach_ofnode(chip, - EXYNOS5_PA_GPIO1, i * 0x20); - } - samsung_gpiolib_add_4bit_chips(exynos5_gpios_1, - nr_chips, gpio_base1); - - /* gpio part2 */ - gpio_base2 = ioremap(EXYNOS5_PA_GPIO2, SZ_4K); - if (gpio_base2 == NULL) { - pr_err("unable to ioremap for gpio_base2\n"); - goto err_ioremap2; - } - - chip = exynos5_gpios_2; - nr_chips = ARRAY_SIZE(exynos5_gpios_2); - - for (i = 0; i < nr_chips; i++, chip++) { - if (!chip->config) { - chip->config = &exynos_gpio_cfg; - chip->group = group++; - } - exynos_gpiolib_attach_ofnode(chip, - EXYNOS5_PA_GPIO2, i * 0x20); - } - samsung_gpiolib_add_4bit_chips(exynos5_gpios_2, - nr_chips, gpio_base2); - - /* gpio part3 */ - gpio_base3 = ioremap(EXYNOS5_PA_GPIO3, SZ_4K); - if (gpio_base3 == NULL) { - pr_err("unable to ioremap for gpio_base3\n"); - goto err_ioremap3; - } - - /* need to set base address for gpv */ - exynos5_gpios_3[0].base = gpio_base3; - exynos5_gpios_3[1].base = gpio_base3 + 0x20; - exynos5_gpios_3[2].base = gpio_base3 + 0x60; - exynos5_gpios_3[3].base = gpio_base3 + 0x80; - exynos5_gpios_3[4].base = gpio_base3 + 0xC0; - - chip = exynos5_gpios_3; - nr_chips = ARRAY_SIZE(exynos5_gpios_3); - - for (i = 0; i < nr_chips; i++, chip++) { - if (!chip->config) { - chip->config = &exynos_gpio_cfg; - chip->group = group++; - } - exynos_gpiolib_attach_ofnode(chip, - EXYNOS5_PA_GPIO3, i * 0x20); - } - samsung_gpiolib_add_4bit_chips(exynos5_gpios_3, - nr_chips, gpio_base3); - - /* gpio part4 */ - gpio_base4 = ioremap(EXYNOS5_PA_GPIO4, SZ_4K); - if (gpio_base4 == NULL) { - pr_err("unable to ioremap for gpio_base4\n"); - goto err_ioremap4; - } - - chip = exynos5_gpios_4; - nr_chips = ARRAY_SIZE(exynos5_gpios_4); - - for (i = 0; i < nr_chips; i++, chip++) { - if (!chip->config) { - chip->config = &exynos_gpio_cfg; - chip->group = group++; - } - exynos_gpiolib_attach_ofnode(chip, - EXYNOS5_PA_GPIO4, i * 0x20); - } - samsung_gpiolib_add_4bit_chips(exynos5_gpios_4, - nr_chips, gpio_base4); - return; - -err_ioremap4: - iounmap(gpio_base3); -err_ioremap3: - iounmap(gpio_base2); -err_ioremap2: - iounmap(gpio_base1); -err_ioremap1: - return; - -#endif /* CONFIG_SOC_EXYNOS5250 */ -} - /* TODO: cleanup soc_is_* */ static __init int samsung_gpiolib_init(void) { @@ -3040,10 +2173,6 @@ static __init int samsung_gpiolib_init(void) #if defined(CONFIG_CPU_S5PV210) && defined(CONFIG_S5P_GPIO_INT) s5p_register_gpioint_bank(IRQ_GPIOINT, 0, S5P_GPIOINT_GROUP_MAXNR); #endif - } else if (soc_is_exynos4210()) { - exynos4_gpiolib_init(); - } else if (soc_is_exynos5250()) { - exynos5_gpiolib_init(); } else { WARN(1, "Unknown SoC in gpio-samsung, no GPIOs added\n"); return -ENODEV; diff --git a/drivers/gpio/gpio-spear-spics.c b/drivers/gpio/gpio-spear-spics.c index 7a4bf7c0d98f..e9a0415834ea 100644 --- a/drivers/gpio/gpio-spear-spics.c +++ b/drivers/gpio/gpio-spear-spics.c @@ -128,18 +128,13 @@ static int spics_gpio_probe(struct platform_device *pdev) struct resource *res; int ret; - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - if (!res) { - dev_err(&pdev->dev, "invalid IORESOURCE_MEM\n"); - return -EBUSY; - } - spics = devm_kzalloc(&pdev->dev, sizeof(*spics), GFP_KERNEL); if (!spics) { dev_err(&pdev->dev, "memory allocation fail\n"); return -ENOMEM; } + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); spics->base = devm_ioremap_resource(&pdev->dev, res); if (IS_ERR(spics->base)) return PTR_ERR(spics->base); diff --git a/drivers/gpio/gpio-sta2x11.c b/drivers/gpio/gpio-sta2x11.c index f43ab6aea281..f2fb12c18da9 100644 --- a/drivers/gpio/gpio-sta2x11.c +++ b/drivers/gpio/gpio-sta2x11.c @@ -361,7 +361,7 @@ static int gsta_probe(struct platform_device *dev) struct gsta_gpio *chip; struct resource *res; - pdev = *(struct pci_dev **)(dev->dev.platform_data); + pdev = *(struct pci_dev **)dev_get_platdata(&dev->dev); gpio_pdata = dev_get_platdata(&pdev->dev); if (gpio_pdata == NULL) diff --git a/drivers/gpio/gpio-sx150x.c b/drivers/gpio/gpio-sx150x.c index f371732591d2..d2983e9ad6af 100644 --- a/drivers/gpio/gpio-sx150x.c +++ b/drivers/gpio/gpio-sx150x.c @@ -583,7 +583,7 @@ static int sx150x_probe(struct i2c_client *client, struct sx150x_chip *chip; int rc; - pdata = client->dev.platform_data; + pdata = dev_get_platdata(&client->dev); if (!pdata) return -EINVAL; diff --git a/drivers/gpio/gpio-timberdale.c b/drivers/gpio/gpio-timberdale.c index 4c65f8883204..7a0e956ef1ed 100644 --- a/drivers/gpio/gpio-timberdale.c +++ b/drivers/gpio/gpio-timberdale.c @@ -227,7 +227,7 @@ static int timbgpio_probe(struct platform_device *pdev) struct gpio_chip *gc; struct timbgpio *tgpio; struct resource *iomem; - struct timbgpio_platform_data *pdata = pdev->dev.platform_data; + struct timbgpio_platform_data *pdata = dev_get_platdata(&pdev->dev); int irq = platform_get_irq(pdev, 0); if (!pdata || pdata->nr_pins > 32) { @@ -318,7 +318,7 @@ err_mem: static int timbgpio_remove(struct platform_device *pdev) { int err; - struct timbgpio_platform_data *pdata = pdev->dev.platform_data; + struct timbgpio_platform_data *pdata = dev_get_platdata(&pdev->dev); struct timbgpio *tgpio = platform_get_drvdata(pdev); struct resource *iomem = platform_get_resource(pdev, IORESOURCE_MEM, 0); int irq = platform_get_irq(pdev, 0); diff --git a/drivers/gpio/gpio-tps65912.c b/drivers/gpio/gpio-tps65912.c index 30a5844a7dca..276a4229b032 100644 --- a/drivers/gpio/gpio-tps65912.c +++ b/drivers/gpio/gpio-tps65912.c @@ -87,7 +87,7 @@ static struct gpio_chip template_chip = { static int tps65912_gpio_probe(struct platform_device *pdev) { struct tps65912 *tps65912 = dev_get_drvdata(pdev->dev.parent); - struct tps65912_board *pdata = tps65912->dev->platform_data; + struct tps65912_board *pdata = dev_get_platdata(tps65912->dev); struct tps65912_gpio_data *tps65912_gpio; int ret; diff --git a/drivers/gpio/gpio-ts5500.c b/drivers/gpio/gpio-ts5500.c index cc53cab8df2a..3df3ebdb3e52 100644 --- a/drivers/gpio/gpio-ts5500.c +++ b/drivers/gpio/gpio-ts5500.c @@ -322,7 +322,7 @@ static void ts5500_disable_irq(struct ts5500_priv *priv) static int ts5500_dio_probe(struct platform_device *pdev) { enum ts5500_blocks block = platform_get_device_id(pdev)->driver_data; - struct ts5500_dio_platform_data *pdata = pdev->dev.platform_data; + struct ts5500_dio_platform_data *pdata = dev_get_platdata(&pdev->dev); struct device *dev = &pdev->dev; const char *name = dev_name(dev); struct ts5500_priv *priv; diff --git a/drivers/gpio/gpio-twl4030.c b/drivers/gpio/gpio-twl4030.c index 4d330e36da1d..d8e4f6efcb29 100644 --- a/drivers/gpio/gpio-twl4030.c +++ b/drivers/gpio/gpio-twl4030.c @@ -256,7 +256,7 @@ static int twl_request(struct gpio_chip *chip, unsigned offset) /* optionally have the first two GPIOs switch vMMC1 * and vMMC2 power supplies based on card presence. */ - pdata = chip->dev->platform_data; + pdata = dev_get_platdata(chip->dev); if (pdata) value |= pdata->mmc_cd & 0x03; @@ -460,7 +460,7 @@ static struct twl4030_gpio_platform_data *of_gpio_twl4030(struct device *dev) static int gpio_twl4030_probe(struct platform_device *pdev) { - struct twl4030_gpio_platform_data *pdata = pdev->dev.platform_data; + struct twl4030_gpio_platform_data *pdata = dev_get_platdata(&pdev->dev); struct device_node *node = pdev->dev.of_node; struct gpio_twl4030_priv *priv; int ret, irq_base; @@ -556,7 +556,7 @@ out: /* Cannot use as gpio_twl4030_probe() calls us */ static int gpio_twl4030_remove(struct platform_device *pdev) { - struct twl4030_gpio_platform_data *pdata = pdev->dev.platform_data; + struct twl4030_gpio_platform_data *pdata = dev_get_platdata(&pdev->dev); struct gpio_twl4030_priv *priv = platform_get_drvdata(pdev); int status; diff --git a/drivers/gpio/gpio-twl6040.c b/drivers/gpio/gpio-twl6040.c index 0be82c6dd796..d420d30b86e7 100644 --- a/drivers/gpio/gpio-twl6040.c +++ b/drivers/gpio/gpio-twl6040.c @@ -84,15 +84,11 @@ static struct gpio_chip twl6040gpo_chip = { static int gpo_twl6040_probe(struct platform_device *pdev) { - struct twl6040_gpo_data *pdata = pdev->dev.platform_data; struct device *twl6040_core_dev = pdev->dev.parent; struct twl6040 *twl6040 = dev_get_drvdata(twl6040_core_dev); int ret; - if (pdata) - twl6040gpo_chip.base = pdata->gpio_base; - else - twl6040gpo_chip.base = -1; + twl6040gpo_chip.base = -1; if (twl6040_get_revid(twl6040) < TWL6041_REV_ES2_0) twl6040gpo_chip.ngpio = 3; /* twl6040 have 3 GPO */ diff --git a/drivers/gpio/gpio-tz1090-pdc.c b/drivers/gpio/gpio-tz1090-pdc.c new file mode 100644 index 000000000000..f512da299b3d --- /dev/null +++ b/drivers/gpio/gpio-tz1090-pdc.c @@ -0,0 +1,243 @@ +/* + * Toumaz Xenif TZ1090 PDC GPIO handling. + * + * Copyright (C) 2012-2013 Imagination Technologies Ltd. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include <linux/bitops.h> +#include <linux/gpio.h> +#include <linux/io.h> +#include <linux/module.h> +#include <linux/of_irq.h> +#include <linux/pinctrl/consumer.h> +#include <linux/platform_device.h> +#include <linux/slab.h> +#include <linux/syscore_ops.h> +#include <asm/global_lock.h> + +/* Register offsets from SOC_GPIO_CONTROL0 */ +#define REG_SOC_GPIO_CONTROL0 0x00 +#define REG_SOC_GPIO_CONTROL1 0x04 +#define REG_SOC_GPIO_CONTROL2 0x08 +#define REG_SOC_GPIO_CONTROL3 0x0c +#define REG_SOC_GPIO_STATUS 0x80 + +/* PDC GPIOs go after normal GPIOs */ +#define GPIO_PDC_BASE 90 +#define GPIO_PDC_NGPIO 7 + +/* Out of PDC gpios, only syswakes have irqs */ +#define GPIO_PDC_IRQ_FIRST 2 +#define GPIO_PDC_NIRQ 3 + +/** + * struct tz1090_pdc_gpio - GPIO bank private data + * @chip: Generic GPIO chip for GPIO bank + * @reg: Base of registers, offset for this GPIO bank + * @irq: IRQ numbers for Syswake GPIOs + * + * This is the main private data for the PDC GPIO driver. It encapsulates a + * gpio_chip, and the callbacks for the gpio_chip can access the private data + * with the to_pdc() macro below. + */ +struct tz1090_pdc_gpio { + struct gpio_chip chip; + void __iomem *reg; + int irq[GPIO_PDC_NIRQ]; +}; +#define to_pdc(c) container_of(c, struct tz1090_pdc_gpio, chip) + +/* Register accesses into the PDC MMIO area */ + +static inline void pdc_write(struct tz1090_pdc_gpio *priv, unsigned int reg_offs, + unsigned int data) +{ + writel(data, priv->reg + reg_offs); +} + +static inline unsigned int pdc_read(struct tz1090_pdc_gpio *priv, + unsigned int reg_offs) +{ + return readl(priv->reg + reg_offs); +} + +/* Generic GPIO interface */ + +static int tz1090_pdc_gpio_direction_input(struct gpio_chip *chip, + unsigned int offset) +{ + struct tz1090_pdc_gpio *priv = to_pdc(chip); + u32 value; + int lstat; + + __global_lock2(lstat); + value = pdc_read(priv, REG_SOC_GPIO_CONTROL1); + value |= BIT(offset); + pdc_write(priv, REG_SOC_GPIO_CONTROL1, value); + __global_unlock2(lstat); + + return 0; +} + +static int tz1090_pdc_gpio_direction_output(struct gpio_chip *chip, + unsigned int offset, + int output_value) +{ + struct tz1090_pdc_gpio *priv = to_pdc(chip); + u32 value; + int lstat; + + __global_lock2(lstat); + /* EXT_POWER doesn't seem to have an output value bit */ + if (offset < 6) { + value = pdc_read(priv, REG_SOC_GPIO_CONTROL0); + if (output_value) + value |= BIT(offset); + else + value &= ~BIT(offset); + pdc_write(priv, REG_SOC_GPIO_CONTROL0, value); + } + + value = pdc_read(priv, REG_SOC_GPIO_CONTROL1); + value &= ~BIT(offset); + pdc_write(priv, REG_SOC_GPIO_CONTROL1, value); + __global_unlock2(lstat); + + return 0; +} + +static int tz1090_pdc_gpio_get(struct gpio_chip *chip, unsigned int offset) +{ + struct tz1090_pdc_gpio *priv = to_pdc(chip); + return pdc_read(priv, REG_SOC_GPIO_STATUS) & BIT(offset); +} + +static void tz1090_pdc_gpio_set(struct gpio_chip *chip, unsigned int offset, + int output_value) +{ + struct tz1090_pdc_gpio *priv = to_pdc(chip); + u32 value; + int lstat; + + /* EXT_POWER doesn't seem to have an output value bit */ + if (offset >= 6) + return; + + __global_lock2(lstat); + value = pdc_read(priv, REG_SOC_GPIO_CONTROL0); + if (output_value) + value |= BIT(offset); + else + value &= ~BIT(offset); + pdc_write(priv, REG_SOC_GPIO_CONTROL0, value); + __global_unlock2(lstat); +} + +static int tz1090_pdc_gpio_request(struct gpio_chip *chip, unsigned int offset) +{ + return pinctrl_request_gpio(chip->base + offset); +} + +static void tz1090_pdc_gpio_free(struct gpio_chip *chip, unsigned int offset) +{ + pinctrl_free_gpio(chip->base + offset); +} + +static int tz1090_pdc_gpio_to_irq(struct gpio_chip *chip, unsigned int offset) +{ + struct tz1090_pdc_gpio *priv = to_pdc(chip); + unsigned int syswake = offset - GPIO_PDC_IRQ_FIRST; + int irq; + + /* only syswakes have irqs */ + if (syswake >= GPIO_PDC_NIRQ) + return -EINVAL; + + irq = priv->irq[syswake]; + if (!irq) + return -EINVAL; + + return irq; +} + +static int tz1090_pdc_gpio_probe(struct platform_device *pdev) +{ + struct device_node *np = pdev->dev.of_node; + struct resource *res_regs; + struct tz1090_pdc_gpio *priv; + unsigned int i; + + if (!np) { + dev_err(&pdev->dev, "must be instantiated via devicetree\n"); + return -ENOENT; + } + + res_regs = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!res_regs) { + dev_err(&pdev->dev, "cannot find registers resource\n"); + return -ENOENT; + } + + priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL); + if (!priv) { + dev_err(&pdev->dev, "unable to allocate driver data\n"); + return -ENOMEM; + } + + /* Ioremap the registers */ + priv->reg = devm_ioremap(&pdev->dev, res_regs->start, + res_regs->end - res_regs->start); + if (!priv->reg) { + dev_err(&pdev->dev, "unable to ioremap registers\n"); + return -ENOMEM; + } + + /* Set up GPIO chip */ + priv->chip.label = "tz1090-pdc-gpio"; + priv->chip.dev = &pdev->dev; + priv->chip.direction_input = tz1090_pdc_gpio_direction_input; + priv->chip.direction_output = tz1090_pdc_gpio_direction_output; + priv->chip.get = tz1090_pdc_gpio_get; + priv->chip.set = tz1090_pdc_gpio_set; + priv->chip.free = tz1090_pdc_gpio_free; + priv->chip.request = tz1090_pdc_gpio_request; + priv->chip.to_irq = tz1090_pdc_gpio_to_irq; + priv->chip.of_node = np; + + /* GPIO numbering */ + priv->chip.base = GPIO_PDC_BASE; + priv->chip.ngpio = GPIO_PDC_NGPIO; + + /* Map the syswake irqs */ + for (i = 0; i < GPIO_PDC_NIRQ; ++i) + priv->irq[i] = irq_of_parse_and_map(np, i); + + /* Add the GPIO bank */ + gpiochip_add(&priv->chip); + + return 0; +} + +static struct of_device_id tz1090_pdc_gpio_of_match[] = { + { .compatible = "img,tz1090-pdc-gpio" }, + { }, +}; + +static struct platform_driver tz1090_pdc_gpio_driver = { + .driver = { + .name = "tz1090-pdc-gpio", + .owner = THIS_MODULE, + .of_match_table = tz1090_pdc_gpio_of_match, + }, + .probe = tz1090_pdc_gpio_probe, +}; + +static int __init tz1090_pdc_gpio_init(void) +{ + return platform_driver_register(&tz1090_pdc_gpio_driver); +} +subsys_initcall(tz1090_pdc_gpio_init); diff --git a/drivers/gpio/gpio-tz1090.c b/drivers/gpio/gpio-tz1090.c new file mode 100644 index 000000000000..23e061392411 --- /dev/null +++ b/drivers/gpio/gpio-tz1090.c @@ -0,0 +1,606 @@ +/* + * Toumaz Xenif TZ1090 GPIO handling. + * + * Copyright (C) 2008-2013 Imagination Technologies Ltd. + * + * Based on ARM PXA code and others. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include <linux/bitops.h> +#include <linux/export.h> +#include <linux/gpio.h> +#include <linux/interrupt.h> +#include <linux/io.h> +#include <linux/irq.h> +#include <linux/irqdomain.h> +#include <linux/kernel.h> +#include <linux/of_irq.h> +#include <linux/pinctrl/consumer.h> +#include <linux/platform_device.h> +#include <linux/slab.h> +#include <linux/syscore_ops.h> +#include <asm/global_lock.h> + +/* Register offsets from bank base address */ +#define REG_GPIO_DIR 0x00 +#define REG_GPIO_IRQ_PLRT 0x20 +#define REG_GPIO_IRQ_TYPE 0x30 +#define REG_GPIO_IRQ_EN 0x40 +#define REG_GPIO_IRQ_STS 0x50 +#define REG_GPIO_BIT_EN 0x60 +#define REG_GPIO_DIN 0x70 +#define REG_GPIO_DOUT 0x80 + +/* REG_GPIO_IRQ_PLRT */ +#define REG_GPIO_IRQ_PLRT_LOW 0 +#define REG_GPIO_IRQ_PLRT_HIGH 1 + +/* REG_GPIO_IRQ_TYPE */ +#define REG_GPIO_IRQ_TYPE_LEVEL 0 +#define REG_GPIO_IRQ_TYPE_EDGE 1 + +/** + * struct tz1090_gpio_bank - GPIO bank private data + * @chip: Generic GPIO chip for GPIO bank + * @domain: IRQ domain for GPIO bank (may be NULL) + * @reg: Base of registers, offset for this GPIO bank + * @irq: IRQ number for GPIO bank + * @label: Debug GPIO bank label, used for storage of chip->label + * + * This is the main private data for a GPIO bank. It encapsulates a gpio_chip, + * and the callbacks for the gpio_chip can access the private data with the + * to_bank() macro below. + */ +struct tz1090_gpio_bank { + struct gpio_chip chip; + struct irq_domain *domain; + void __iomem *reg; + int irq; + char label[16]; +}; +#define to_bank(c) container_of(c, struct tz1090_gpio_bank, chip) + +/** + * struct tz1090_gpio - Overall GPIO device private data + * @dev: Device (from platform device) + * @reg: Base of GPIO registers + * + * Represents the overall GPIO device. This structure is actually only + * temporary, and used during init. + */ +struct tz1090_gpio { + struct device *dev; + void __iomem *reg; +}; + +/** + * struct tz1090_gpio_bank_info - Temporary registration info for GPIO bank + * @priv: Overall GPIO device private data + * @node: Device tree node specific to this GPIO bank + * @index: Index of bank in range 0-2 + */ +struct tz1090_gpio_bank_info { + struct tz1090_gpio *priv; + struct device_node *node; + unsigned int index; +}; + +/* Convenience register accessors */ +static inline void tz1090_gpio_write(struct tz1090_gpio_bank *bank, + unsigned int reg_offs, u32 data) +{ + iowrite32(data, bank->reg + reg_offs); +} + +static inline u32 tz1090_gpio_read(struct tz1090_gpio_bank *bank, + unsigned int reg_offs) +{ + return ioread32(bank->reg + reg_offs); +} + +/* caller must hold LOCK2 */ +static inline void _tz1090_gpio_clear_bit(struct tz1090_gpio_bank *bank, + unsigned int reg_offs, + unsigned int offset) +{ + u32 value; + + value = tz1090_gpio_read(bank, reg_offs); + value &= ~BIT(offset); + tz1090_gpio_write(bank, reg_offs, value); +} + +static void tz1090_gpio_clear_bit(struct tz1090_gpio_bank *bank, + unsigned int reg_offs, + unsigned int offset) +{ + int lstat; + + __global_lock2(lstat); + _tz1090_gpio_clear_bit(bank, reg_offs, offset); + __global_unlock2(lstat); +} + +/* caller must hold LOCK2 */ +static inline void _tz1090_gpio_set_bit(struct tz1090_gpio_bank *bank, + unsigned int reg_offs, + unsigned int offset) +{ + u32 value; + + value = tz1090_gpio_read(bank, reg_offs); + value |= BIT(offset); + tz1090_gpio_write(bank, reg_offs, value); +} + +static void tz1090_gpio_set_bit(struct tz1090_gpio_bank *bank, + unsigned int reg_offs, + unsigned int offset) +{ + int lstat; + + __global_lock2(lstat); + _tz1090_gpio_set_bit(bank, reg_offs, offset); + __global_unlock2(lstat); +} + +/* caller must hold LOCK2 */ +static inline void _tz1090_gpio_mod_bit(struct tz1090_gpio_bank *bank, + unsigned int reg_offs, + unsigned int offset, + bool val) +{ + u32 value; + + value = tz1090_gpio_read(bank, reg_offs); + value &= ~BIT(offset); + if (val) + value |= BIT(offset); + tz1090_gpio_write(bank, reg_offs, value); +} + +static void tz1090_gpio_mod_bit(struct tz1090_gpio_bank *bank, + unsigned int reg_offs, + unsigned int offset, + bool val) +{ + int lstat; + + __global_lock2(lstat); + _tz1090_gpio_mod_bit(bank, reg_offs, offset, val); + __global_unlock2(lstat); +} + +static inline int tz1090_gpio_read_bit(struct tz1090_gpio_bank *bank, + unsigned int reg_offs, + unsigned int offset) +{ + return tz1090_gpio_read(bank, reg_offs) & BIT(offset); +} + +/* GPIO chip callbacks */ + +static int tz1090_gpio_direction_input(struct gpio_chip *chip, + unsigned int offset) +{ + struct tz1090_gpio_bank *bank = to_bank(chip); + tz1090_gpio_set_bit(bank, REG_GPIO_DIR, offset); + + return 0; +} + +static int tz1090_gpio_direction_output(struct gpio_chip *chip, + unsigned int offset, int output_value) +{ + struct tz1090_gpio_bank *bank = to_bank(chip); + int lstat; + + __global_lock2(lstat); + _tz1090_gpio_mod_bit(bank, REG_GPIO_DOUT, offset, output_value); + _tz1090_gpio_clear_bit(bank, REG_GPIO_DIR, offset); + __global_unlock2(lstat); + + return 0; +} + +/* + * Return GPIO level + */ +static int tz1090_gpio_get(struct gpio_chip *chip, unsigned int offset) +{ + struct tz1090_gpio_bank *bank = to_bank(chip); + + return tz1090_gpio_read_bit(bank, REG_GPIO_DIN, offset); +} + +/* + * Set output GPIO level + */ +static void tz1090_gpio_set(struct gpio_chip *chip, unsigned int offset, + int output_value) +{ + struct tz1090_gpio_bank *bank = to_bank(chip); + + tz1090_gpio_mod_bit(bank, REG_GPIO_DOUT, offset, output_value); +} + +static int tz1090_gpio_request(struct gpio_chip *chip, unsigned int offset) +{ + struct tz1090_gpio_bank *bank = to_bank(chip); + int ret; + + ret = pinctrl_request_gpio(chip->base + offset); + if (ret) + return ret; + + tz1090_gpio_set_bit(bank, REG_GPIO_DIR, offset); + tz1090_gpio_set_bit(bank, REG_GPIO_BIT_EN, offset); + + return 0; +} + +static void tz1090_gpio_free(struct gpio_chip *chip, unsigned int offset) +{ + struct tz1090_gpio_bank *bank = to_bank(chip); + + pinctrl_free_gpio(chip->base + offset); + + tz1090_gpio_clear_bit(bank, REG_GPIO_BIT_EN, offset); +} + +static int tz1090_gpio_to_irq(struct gpio_chip *chip, unsigned int offset) +{ + struct tz1090_gpio_bank *bank = to_bank(chip); + + if (!bank->domain) + return -EINVAL; + + return irq_create_mapping(bank->domain, offset); +} + +/* IRQ chip handlers */ + +/* Get TZ1090 GPIO chip from irq data provided to generic IRQ callbacks */ +static inline struct tz1090_gpio_bank *irqd_to_gpio_bank(struct irq_data *data) +{ + return (struct tz1090_gpio_bank *)data->domain->host_data; +} + +static void tz1090_gpio_irq_polarity(struct tz1090_gpio_bank *bank, + unsigned int offset, unsigned int polarity) +{ + tz1090_gpio_mod_bit(bank, REG_GPIO_IRQ_PLRT, offset, polarity); +} + +static void tz1090_gpio_irq_type(struct tz1090_gpio_bank *bank, + unsigned int offset, unsigned int type) +{ + tz1090_gpio_mod_bit(bank, REG_GPIO_IRQ_TYPE, offset, type); +} + +/* set polarity to trigger on next edge, whether rising or falling */ +static void tz1090_gpio_irq_next_edge(struct tz1090_gpio_bank *bank, + unsigned int offset) +{ + unsigned int value_p, value_i; + int lstat; + + /* + * Set the GPIO's interrupt polarity to the opposite of the current + * input value so that the next edge triggers an interrupt. + */ + __global_lock2(lstat); + value_i = ~tz1090_gpio_read(bank, REG_GPIO_DIN); + value_p = tz1090_gpio_read(bank, REG_GPIO_IRQ_PLRT); + value_p &= ~BIT(offset); + value_p |= value_i & BIT(offset); + tz1090_gpio_write(bank, REG_GPIO_IRQ_PLRT, value_p); + __global_unlock2(lstat); +} + +static unsigned int gpio_startup_irq(struct irq_data *data) +{ + /* + * This warning indicates that the type of the irq hasn't been set + * before enabling the irq. This would normally be done by passing some + * trigger flags to request_irq(). + */ + WARN(irqd_get_trigger_type(data) == IRQ_TYPE_NONE, + "irq type not set before enabling gpio irq %d", data->irq); + + irq_gc_ack_clr_bit(data); + irq_gc_mask_set_bit(data); + return 0; +} + +static int gpio_set_irq_type(struct irq_data *data, unsigned int flow_type) +{ + struct tz1090_gpio_bank *bank = irqd_to_gpio_bank(data); + unsigned int type; + unsigned int polarity; + + switch (flow_type) { + case IRQ_TYPE_EDGE_BOTH: + type = REG_GPIO_IRQ_TYPE_EDGE; + polarity = REG_GPIO_IRQ_PLRT_LOW; + break; + case IRQ_TYPE_EDGE_RISING: + type = REG_GPIO_IRQ_TYPE_EDGE; + polarity = REG_GPIO_IRQ_PLRT_HIGH; + break; + case IRQ_TYPE_EDGE_FALLING: + type = REG_GPIO_IRQ_TYPE_EDGE; + polarity = REG_GPIO_IRQ_PLRT_LOW; + break; + case IRQ_TYPE_LEVEL_HIGH: + type = REG_GPIO_IRQ_TYPE_LEVEL; + polarity = REG_GPIO_IRQ_PLRT_HIGH; + break; + case IRQ_TYPE_LEVEL_LOW: + type = REG_GPIO_IRQ_TYPE_LEVEL; + polarity = REG_GPIO_IRQ_PLRT_LOW; + break; + default: + return -EINVAL; + } + + tz1090_gpio_irq_type(bank, data->hwirq, type); + irq_setup_alt_chip(data, flow_type); + + if (flow_type == IRQ_TYPE_EDGE_BOTH) + tz1090_gpio_irq_next_edge(bank, data->hwirq); + else + tz1090_gpio_irq_polarity(bank, data->hwirq, polarity); + + return 0; +} + +#ifdef CONFIG_SUSPEND +static int gpio_set_irq_wake(struct irq_data *data, unsigned int on) +{ + struct tz1090_gpio_bank *bank = irqd_to_gpio_bank(data); + +#ifdef CONFIG_PM_DEBUG + pr_info("irq_wake irq%d state:%d\n", data->irq, on); +#endif + + /* wake on gpio block interrupt */ + return irq_set_irq_wake(bank->irq, on); +} +#else +#define gpio_set_irq_wake NULL +#endif + +static void tz1090_gpio_irq_handler(unsigned int irq, struct irq_desc *desc) +{ + irq_hw_number_t hw; + unsigned int irq_stat, irq_no; + struct tz1090_gpio_bank *bank; + struct irq_desc *child_desc; + + bank = (struct tz1090_gpio_bank *)irq_desc_get_handler_data(desc); + irq_stat = tz1090_gpio_read(bank, REG_GPIO_DIR) & + tz1090_gpio_read(bank, REG_GPIO_IRQ_STS) & + tz1090_gpio_read(bank, REG_GPIO_IRQ_EN) & + 0x3FFFFFFF; /* 30 bits only */ + + for (hw = 0; irq_stat; irq_stat >>= 1, ++hw) { + if (!(irq_stat & 1)) + continue; + + irq_no = irq_linear_revmap(bank->domain, hw); + child_desc = irq_to_desc(irq_no); + + /* Toggle edge for pin with both edges triggering enabled */ + if (irqd_get_trigger_type(&child_desc->irq_data) + == IRQ_TYPE_EDGE_BOTH) + tz1090_gpio_irq_next_edge(bank, hw); + + generic_handle_irq_desc(irq_no, child_desc); + } +} + +static int tz1090_gpio_bank_probe(struct tz1090_gpio_bank_info *info) +{ + struct device_node *np = info->node; + struct device *dev = info->priv->dev; + struct tz1090_gpio_bank *bank; + struct irq_chip_generic *gc; + int err; + + bank = devm_kzalloc(dev, sizeof(*bank), GFP_KERNEL); + if (!bank) { + dev_err(dev, "unable to allocate driver data\n"); + return -ENOMEM; + } + + /* Offset the main registers to the first register in this bank */ + bank->reg = info->priv->reg + info->index * 4; + + /* Set up GPIO chip */ + snprintf(bank->label, sizeof(bank->label), "tz1090-gpio-%u", + info->index); + bank->chip.label = bank->label; + bank->chip.dev = dev; + bank->chip.direction_input = tz1090_gpio_direction_input; + bank->chip.direction_output = tz1090_gpio_direction_output; + bank->chip.get = tz1090_gpio_get; + bank->chip.set = tz1090_gpio_set; + bank->chip.free = tz1090_gpio_free; + bank->chip.request = tz1090_gpio_request; + bank->chip.to_irq = tz1090_gpio_to_irq; + bank->chip.of_node = np; + + /* GPIO numbering from 0 */ + bank->chip.base = info->index * 30; + bank->chip.ngpio = 30; + + /* Add the GPIO bank */ + gpiochip_add(&bank->chip); + + /* Get the GPIO bank IRQ if provided */ + bank->irq = irq_of_parse_and_map(np, 0); + + /* The interrupt is optional (it may be used by another core on chip) */ + if (bank->irq < 0) { + dev_info(dev, "IRQ not provided for bank %u, IRQs disabled\n", + info->index); + return 0; + } + + dev_info(dev, "Setting up IRQs for GPIO bank %u\n", + info->index); + + /* + * Initialise all interrupts to disabled so we don't get + * spurious ones on a dirty boot and hit the BUG_ON in the + * handler. + */ + tz1090_gpio_write(bank, REG_GPIO_IRQ_EN, 0); + + /* Add a virtual IRQ for each GPIO */ + bank->domain = irq_domain_add_linear(np, + bank->chip.ngpio, + &irq_generic_chip_ops, + bank); + + /* Set up a generic irq chip with 2 chip types (level and edge) */ + err = irq_alloc_domain_generic_chips(bank->domain, bank->chip.ngpio, 2, + bank->label, handle_bad_irq, 0, 0, + IRQ_GC_INIT_NESTED_LOCK); + if (err) { + dev_info(dev, + "irq_alloc_domain_generic_chips failed for bank %u, IRQs disabled\n", + info->index); + irq_domain_remove(bank->domain); + return 0; + } + + gc = irq_get_domain_generic_chip(bank->domain, 0); + gc->reg_base = bank->reg; + + /* level chip type */ + gc->chip_types[0].type = IRQ_TYPE_LEVEL_MASK; + gc->chip_types[0].handler = handle_level_irq; + gc->chip_types[0].regs.ack = REG_GPIO_IRQ_STS; + gc->chip_types[0].regs.mask = REG_GPIO_IRQ_EN; + gc->chip_types[0].chip.irq_startup = gpio_startup_irq, + gc->chip_types[0].chip.irq_ack = irq_gc_ack_clr_bit, + gc->chip_types[0].chip.irq_mask = irq_gc_mask_clr_bit, + gc->chip_types[0].chip.irq_unmask = irq_gc_mask_set_bit, + gc->chip_types[0].chip.irq_set_type = gpio_set_irq_type, + gc->chip_types[0].chip.irq_set_wake = gpio_set_irq_wake, + gc->chip_types[0].chip.flags = IRQCHIP_MASK_ON_SUSPEND, + + /* edge chip type */ + gc->chip_types[1].type = IRQ_TYPE_EDGE_BOTH; + gc->chip_types[1].handler = handle_edge_irq; + gc->chip_types[1].regs.ack = REG_GPIO_IRQ_STS; + gc->chip_types[1].regs.mask = REG_GPIO_IRQ_EN; + gc->chip_types[1].chip.irq_startup = gpio_startup_irq, + gc->chip_types[1].chip.irq_ack = irq_gc_ack_clr_bit, + gc->chip_types[1].chip.irq_mask = irq_gc_mask_clr_bit, + gc->chip_types[1].chip.irq_unmask = irq_gc_mask_set_bit, + gc->chip_types[1].chip.irq_set_type = gpio_set_irq_type, + gc->chip_types[1].chip.irq_set_wake = gpio_set_irq_wake, + gc->chip_types[1].chip.flags = IRQCHIP_MASK_ON_SUSPEND, + + /* Setup chained handler for this GPIO bank */ + irq_set_handler_data(bank->irq, bank); + irq_set_chained_handler(bank->irq, tz1090_gpio_irq_handler); + + return 0; +} + +static void tz1090_gpio_register_banks(struct tz1090_gpio *priv) +{ + struct device_node *np = priv->dev->of_node; + struct device_node *node; + + for_each_available_child_of_node(np, node) { + struct tz1090_gpio_bank_info info; + u32 addr; + int ret; + + ret = of_property_read_u32(node, "reg", &addr); + if (ret) { + dev_err(priv->dev, "invalid reg on %s\n", + node->full_name); + continue; + } + if (addr >= 3) { + dev_err(priv->dev, "index %u in %s out of range\n", + addr, node->full_name); + continue; + } + + info.index = addr; + info.node = of_node_get(node); + info.priv = priv; + + ret = tz1090_gpio_bank_probe(&info); + if (ret) { + dev_err(priv->dev, "failure registering %s\n", + node->full_name); + of_node_put(node); + continue; + } + } +} + +static int tz1090_gpio_probe(struct platform_device *pdev) +{ + struct device_node *np = pdev->dev.of_node; + struct resource *res_regs; + struct tz1090_gpio priv; + + if (!np) { + dev_err(&pdev->dev, "must be instantiated via devicetree\n"); + return -ENOENT; + } + + res_regs = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!res_regs) { + dev_err(&pdev->dev, "cannot find registers resource\n"); + return -ENOENT; + } + + priv.dev = &pdev->dev; + + /* Ioremap the registers */ + priv.reg = devm_ioremap(&pdev->dev, res_regs->start, + res_regs->end - res_regs->start); + if (!priv.reg) { + dev_err(&pdev->dev, "unable to ioremap registers\n"); + return -ENOMEM; + } + + /* Look for banks */ + tz1090_gpio_register_banks(&priv); + + return 0; +} + +static struct of_device_id tz1090_gpio_of_match[] = { + { .compatible = "img,tz1090-gpio" }, + { }, +}; + +static struct platform_driver tz1090_gpio_driver = { + .driver = { + .name = "tz1090-gpio", + .owner = THIS_MODULE, + .of_match_table = tz1090_gpio_of_match, + }, + .probe = tz1090_gpio_probe, +}; + +static int __init tz1090_gpio_init(void) +{ + return platform_driver_register(&tz1090_gpio_driver); +} +subsys_initcall(tz1090_gpio_init); diff --git a/drivers/gpio/gpio-ucb1400.c b/drivers/gpio/gpio-ucb1400.c index 6d0feb234d3c..1a605f2a0f55 100644 --- a/drivers/gpio/gpio-ucb1400.c +++ b/drivers/gpio/gpio-ucb1400.c @@ -45,7 +45,7 @@ static void ucb1400_gpio_set(struct gpio_chip *gc, unsigned off, int val) static int ucb1400_gpio_probe(struct platform_device *dev) { - struct ucb1400_gpio *ucb = dev->dev.platform_data; + struct ucb1400_gpio *ucb = dev_get_platdata(&dev->dev); int err = 0; if (!(ucb && ucb->gpio_offset)) { diff --git a/drivers/gpio/gpio-wm831x.c b/drivers/gpio/gpio-wm831x.c index 2a743e10ecb6..456000c5c457 100644 --- a/drivers/gpio/gpio-wm831x.c +++ b/drivers/gpio/gpio-wm831x.c @@ -246,7 +246,7 @@ static struct gpio_chip template_chip = { static int wm831x_gpio_probe(struct platform_device *pdev) { struct wm831x *wm831x = dev_get_drvdata(pdev->dev.parent); - struct wm831x_pdata *pdata = wm831x->dev->platform_data; + struct wm831x_pdata *pdata = dev_get_platdata(wm831x->dev); struct wm831x_gpio *wm831x_gpio; int ret; diff --git a/drivers/gpio/gpio-wm8350.c b/drivers/gpio/gpio-wm8350.c index 0b598cf3df9d..fc49154be7b1 100644 --- a/drivers/gpio/gpio-wm8350.c +++ b/drivers/gpio/gpio-wm8350.c @@ -112,7 +112,7 @@ static struct gpio_chip template_chip = { static int wm8350_gpio_probe(struct platform_device *pdev) { struct wm8350 *wm8350 = dev_get_drvdata(pdev->dev.parent); - struct wm8350_platform_data *pdata = wm8350->dev->platform_data; + struct wm8350_platform_data *pdata = dev_get_platdata(wm8350->dev); struct wm8350_gpio_data *wm8350_gpio; int ret; diff --git a/drivers/gpio/gpio-wm8994.c b/drivers/gpio/gpio-wm8994.c index ae409fd94af7..a53dbdefc7ee 100644 --- a/drivers/gpio/gpio-wm8994.c +++ b/drivers/gpio/gpio-wm8994.c @@ -248,7 +248,7 @@ static struct gpio_chip template_chip = { static int wm8994_gpio_probe(struct platform_device *pdev) { struct wm8994 *wm8994 = dev_get_drvdata(pdev->dev.parent); - struct wm8994_pdata *pdata = wm8994->dev->platform_data; + struct wm8994_pdata *pdata = dev_get_platdata(wm8994->dev); struct wm8994_gpio *wm8994_gpio; int ret; diff --git a/drivers/gpio/gpiolib-of.c b/drivers/gpio/gpiolib-of.c index 665f9530c950..ba9876ffb017 100644 --- a/drivers/gpio/gpiolib-of.c +++ b/drivers/gpio/gpiolib-of.c @@ -76,7 +76,8 @@ int of_get_named_gpio_flags(struct device_node *np, const char *propname, ret = of_parse_phandle_with_args(np, propname, "#gpio-cells", index, &gg_data.gpiospec); if (ret) { - pr_debug("%s: can't parse gpios property\n", __func__); + pr_debug("%s: can't parse gpios property of node '%s[%d]'\n", + __func__, np->full_name, index); return ret; } diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c index ff0fd655729f..86ef3461ec06 100644 --- a/drivers/gpio/gpiolib.c +++ b/drivers/gpio/gpiolib.c @@ -349,7 +349,7 @@ static ssize_t gpio_value_store(struct device *dev, else { long value; - status = strict_strtol(buf, 0, &value); + status = kstrtol(buf, 0, &value); if (status == 0) { if (test_bit(FLAG_ACTIVE_LOW, &desc->flags)) value = !value; @@ -570,7 +570,7 @@ static ssize_t gpio_active_low_store(struct device *dev, } else { long value; - status = strict_strtol(buf, 0, &value); + status = kstrtol(buf, 0, &value); if (status == 0) status = sysfs_set_active_low(desc, dev, value != 0); } @@ -652,7 +652,7 @@ static ssize_t export_store(struct class *class, struct gpio_desc *desc; int status; - status = strict_strtol(buf, 0, &gpio); + status = kstrtol(buf, 0, &gpio); if (status < 0) goto done; @@ -694,7 +694,7 @@ static ssize_t unexport_store(struct class *class, struct gpio_desc *desc; int status; - status = strict_strtol(buf, 0, &gpio); + status = kstrtol(buf, 0, &gpio); if (status < 0) goto done; @@ -1398,7 +1398,7 @@ static int gpiod_request(struct gpio_desc *desc, const char *label) int status = -EPROBE_DEFER; unsigned long flags; - if (!desc) { + if (!desc || !desc->chip) { pr_warn("%s: invalid GPIO\n", __func__); return -EINVAL; } @@ -1406,8 +1406,6 @@ static int gpiod_request(struct gpio_desc *desc, const char *label) spin_lock_irqsave(&gpio_lock, flags); chip = desc->chip; - if (chip == NULL) - goto done; if (!try_module_get(chip->owner)) goto done; @@ -1630,16 +1628,20 @@ static int gpiod_direction_input(struct gpio_desc *desc) int status = -EINVAL; int offset; - if (!desc) { + if (!desc || !desc->chip) { pr_warn("%s: invalid GPIO\n", __func__); return -EINVAL; } + chip = desc->chip; + if (!chip->get || !chip->direction_input) { + pr_warn("%s: missing get() or direction_input() operations\n", + __func__); + return -EIO; + } + spin_lock_irqsave(&gpio_lock, flags); - chip = desc->chip; - if (!chip || !chip->get || !chip->direction_input) - goto fail; status = gpio_ensure_requested(desc); if (status < 0) goto fail; @@ -1691,7 +1693,7 @@ static int gpiod_direction_output(struct gpio_desc *desc, int value) int status = -EINVAL; int offset; - if (!desc) { + if (!desc || !desc->chip) { pr_warn("%s: invalid GPIO\n", __func__); return -EINVAL; } @@ -1704,11 +1706,15 @@ static int gpiod_direction_output(struct gpio_desc *desc, int value) if (!value && test_bit(FLAG_OPEN_SOURCE, &desc->flags)) return gpiod_direction_input(desc); + chip = desc->chip; + if (!chip->set || !chip->direction_output) { + pr_warn("%s: missing set() or direction_output() operations\n", + __func__); + return -EIO; + } + spin_lock_irqsave(&gpio_lock, flags); - chip = desc->chip; - if (!chip || !chip->set || !chip->direction_output) - goto fail; status = gpio_ensure_requested(desc); if (status < 0) goto fail; @@ -1757,6 +1763,9 @@ EXPORT_SYMBOL_GPL(gpio_direction_output); * gpio_set_debounce - sets @debounce time for a @gpio * @gpio: the gpio to set debounce time * @debounce: debounce time is microseconds + * + * returns -ENOTSUPP if the controller does not support setting + * debounce. */ static int gpiod_set_debounce(struct gpio_desc *desc, unsigned debounce) { @@ -1765,16 +1774,19 @@ static int gpiod_set_debounce(struct gpio_desc *desc, unsigned debounce) int status = -EINVAL; int offset; - if (!desc) { + if (!desc || !desc->chip) { pr_warn("%s: invalid GPIO\n", __func__); return -EINVAL; } - spin_lock_irqsave(&gpio_lock, flags); - chip = desc->chip; - if (!chip || !chip->set || !chip->set_debounce) - goto fail; + if (!chip->set || !chip->set_debounce) { + pr_debug("%s: missing set() or set_debounce() operations\n", + __func__); + return -ENOTSUPP; + } + + spin_lock_irqsave(&gpio_lock, flags); status = gpio_ensure_requested(desc); if (status < 0) |
