diff options
Diffstat (limited to 'drivers/pinctrl/intel')
-rw-r--r-- | drivers/pinctrl/intel/Kconfig | 7 | ||||
-rw-r--r-- | drivers/pinctrl/intel/Makefile | 1 | ||||
-rw-r--r-- | drivers/pinctrl/intel/pinctrl-baytrail.c | 200 | ||||
-rw-r--r-- | drivers/pinctrl/intel/pinctrl-cherryview.c | 113 | ||||
-rw-r--r-- | drivers/pinctrl/intel/pinctrl-intel.c | 119 | ||||
-rw-r--r-- | drivers/pinctrl/intel/pinctrl-lewisburg.c | 171 | ||||
-rw-r--r-- | drivers/pinctrl/intel/pinctrl-tigerlake.c | 454 |
7 files changed, 787 insertions, 278 deletions
diff --git a/drivers/pinctrl/intel/Kconfig b/drivers/pinctrl/intel/Kconfig index 452a14f78707..6091947a8f51 100644 --- a/drivers/pinctrl/intel/Kconfig +++ b/drivers/pinctrl/intel/Kconfig @@ -115,4 +115,11 @@ config PINCTRL_SUNRISEPOINT provides an interface that allows configuring of PCH pins and using them as GPIOs. +config PINCTRL_TIGERLAKE + tristate "Intel Tiger Lake pinctrl and GPIO driver" + depends on ACPI + select PINCTRL_INTEL + help + This pinctrl driver provides an interface that allows configuring + of Intel Tiger Lake PCH pins and using them as GPIOs. endif diff --git a/drivers/pinctrl/intel/Makefile b/drivers/pinctrl/intel/Makefile index cb491e655749..7e620b471ef6 100644 --- a/drivers/pinctrl/intel/Makefile +++ b/drivers/pinctrl/intel/Makefile @@ -13,3 +13,4 @@ obj-$(CONFIG_PINCTRL_GEMINILAKE) += pinctrl-geminilake.o obj-$(CONFIG_PINCTRL_ICELAKE) += pinctrl-icelake.o obj-$(CONFIG_PINCTRL_LEWISBURG) += pinctrl-lewisburg.o obj-$(CONFIG_PINCTRL_SUNRISEPOINT) += pinctrl-sunrisepoint.o +obj-$(CONFIG_PINCTRL_TIGERLAKE) += pinctrl-tigerlake.o diff --git a/drivers/pinctrl/intel/pinctrl-baytrail.c b/drivers/pinctrl/intel/pinctrl-baytrail.c index 9ffb22211d2b..55141d5de29e 100644 --- a/drivers/pinctrl/intel/pinctrl-baytrail.c +++ b/drivers/pinctrl/intel/pinctrl-baytrail.c @@ -110,7 +110,6 @@ struct byt_gpio { struct platform_device *pdev; struct pinctrl_dev *pctl_dev; struct pinctrl_desc pctl_desc; - raw_spinlock_t lock; const struct intel_pinctrl_soc_data *soc_data; struct intel_community *communities_copy; struct byt_gpio_pin_context *saved_context; @@ -494,34 +493,34 @@ static const struct intel_pinctrl_soc_data byt_sus_soc_data = { }; static const struct pinctrl_pin_desc byt_ncore_pins[] = { - PINCTRL_PIN(0, "GPIO_NCORE0"), - PINCTRL_PIN(1, "GPIO_NCORE1"), - PINCTRL_PIN(2, "GPIO_NCORE2"), - PINCTRL_PIN(3, "GPIO_NCORE3"), - PINCTRL_PIN(4, "GPIO_NCORE4"), - PINCTRL_PIN(5, "GPIO_NCORE5"), - PINCTRL_PIN(6, "GPIO_NCORE6"), - PINCTRL_PIN(7, "GPIO_NCORE7"), - PINCTRL_PIN(8, "GPIO_NCORE8"), - PINCTRL_PIN(9, "GPIO_NCORE9"), - PINCTRL_PIN(10, "GPIO_NCORE10"), - PINCTRL_PIN(11, "GPIO_NCORE11"), - PINCTRL_PIN(12, "GPIO_NCORE12"), - PINCTRL_PIN(13, "GPIO_NCORE13"), - PINCTRL_PIN(14, "GPIO_NCORE14"), - PINCTRL_PIN(15, "GPIO_NCORE15"), - PINCTRL_PIN(16, "GPIO_NCORE16"), - PINCTRL_PIN(17, "GPIO_NCORE17"), - PINCTRL_PIN(18, "GPIO_NCORE18"), - PINCTRL_PIN(19, "GPIO_NCORE19"), - PINCTRL_PIN(20, "GPIO_NCORE20"), - PINCTRL_PIN(21, "GPIO_NCORE21"), - PINCTRL_PIN(22, "GPIO_NCORE22"), - PINCTRL_PIN(23, "GPIO_NCORE23"), - PINCTRL_PIN(24, "GPIO_NCORE24"), - PINCTRL_PIN(25, "GPIO_NCORE25"), - PINCTRL_PIN(26, "GPIO_NCORE26"), - PINCTRL_PIN(27, "GPIO_NCORE27"), + PINCTRL_PIN(0, "HV_DDI0_HPD"), + PINCTRL_PIN(1, "HV_DDI0_DDC_SDA"), + PINCTRL_PIN(2, "HV_DDI0_DDC_SCL"), + PINCTRL_PIN(3, "PANEL0_VDDEN"), + PINCTRL_PIN(4, "PANEL0_BKLTEN"), + PINCTRL_PIN(5, "PANEL0_BKLTCTL"), + PINCTRL_PIN(6, "HV_DDI1_HPD"), + PINCTRL_PIN(7, "HV_DDI1_DDC_SDA"), + PINCTRL_PIN(8, "HV_DDI1_DDC_SCL"), + PINCTRL_PIN(9, "PANEL1_VDDEN"), + PINCTRL_PIN(10, "PANEL1_BKLTEN"), + PINCTRL_PIN(11, "PANEL1_BKLTCTL"), + PINCTRL_PIN(12, "GP_INTD_DSI_TE1"), + PINCTRL_PIN(13, "HV_DDI2_DDC_SDA"), + PINCTRL_PIN(14, "HV_DDI2_DDC_SCL"), + PINCTRL_PIN(15, "GP_CAMERASB00"), + PINCTRL_PIN(16, "GP_CAMERASB01"), + PINCTRL_PIN(17, "GP_CAMERASB02"), + PINCTRL_PIN(18, "GP_CAMERASB03"), + PINCTRL_PIN(19, "GP_CAMERASB04"), + PINCTRL_PIN(20, "GP_CAMERASB05"), + PINCTRL_PIN(21, "GP_CAMERASB06"), + PINCTRL_PIN(22, "GP_CAMERASB07"), + PINCTRL_PIN(23, "GP_CAMERASB08"), + PINCTRL_PIN(24, "GP_CAMERASB09"), + PINCTRL_PIN(25, "GP_CAMERASB10"), + PINCTRL_PIN(26, "GP_CAMERASB11"), + PINCTRL_PIN(27, "GP_INTD_DSI_TE2"), }; static const unsigned int byt_ncore_pins_map[BYT_NGPIO_NCORE] = { @@ -549,6 +548,8 @@ static const struct intel_pinctrl_soc_data *byt_soc_data[] = { NULL }; +static DEFINE_RAW_SPINLOCK(byt_lock); + static struct intel_community *byt_get_community(struct byt_gpio *vg, unsigned int pin) { @@ -658,7 +659,7 @@ static void byt_set_group_simple_mux(struct byt_gpio *vg, unsigned long flags; int i; - raw_spin_lock_irqsave(&vg->lock, flags); + raw_spin_lock_irqsave(&byt_lock, flags); for (i = 0; i < group.npins; i++) { void __iomem *padcfg0; @@ -678,7 +679,7 @@ static void byt_set_group_simple_mux(struct byt_gpio *vg, writel(value, padcfg0); } - raw_spin_unlock_irqrestore(&vg->lock, flags); + raw_spin_unlock_irqrestore(&byt_lock, flags); } static void byt_set_group_mixed_mux(struct byt_gpio *vg, @@ -688,7 +689,7 @@ static void byt_set_group_mixed_mux(struct byt_gpio *vg, unsigned long flags; int i; - raw_spin_lock_irqsave(&vg->lock, flags); + raw_spin_lock_irqsave(&byt_lock, flags); for (i = 0; i < group.npins; i++) { void __iomem *padcfg0; @@ -708,7 +709,7 @@ static void byt_set_group_mixed_mux(struct byt_gpio *vg, writel(value, padcfg0); } - raw_spin_unlock_irqrestore(&vg->lock, flags); + raw_spin_unlock_irqrestore(&byt_lock, flags); } static int byt_set_mux(struct pinctrl_dev *pctldev, unsigned int func_selector, @@ -749,11 +750,11 @@ static void byt_gpio_clear_triggering(struct byt_gpio *vg, unsigned int offset) unsigned long flags; u32 value; - raw_spin_lock_irqsave(&vg->lock, flags); + raw_spin_lock_irqsave(&byt_lock, flags); value = readl(reg); value &= ~(BYT_TRIG_POS | BYT_TRIG_NEG | BYT_TRIG_LVL); writel(value, reg); - raw_spin_unlock_irqrestore(&vg->lock, flags); + raw_spin_unlock_irqrestore(&byt_lock, flags); } static int byt_gpio_request_enable(struct pinctrl_dev *pctl_dev, @@ -765,7 +766,7 @@ static int byt_gpio_request_enable(struct pinctrl_dev *pctl_dev, u32 value, gpio_mux; unsigned long flags; - raw_spin_lock_irqsave(&vg->lock, flags); + raw_spin_lock_irqsave(&byt_lock, flags); /* * In most cases, func pin mux 000 means GPIO function. @@ -787,7 +788,7 @@ static int byt_gpio_request_enable(struct pinctrl_dev *pctl_dev, "pin %u forcibly re-configured as GPIO\n", offset); } - raw_spin_unlock_irqrestore(&vg->lock, flags); + raw_spin_unlock_irqrestore(&byt_lock, flags); pm_runtime_get(&vg->pdev->dev); @@ -815,7 +816,7 @@ static int byt_gpio_set_direction(struct pinctrl_dev *pctl_dev, unsigned long flags; u32 value; - raw_spin_lock_irqsave(&vg->lock, flags); + raw_spin_lock_irqsave(&byt_lock, flags); value = readl(val_reg); value &= ~BYT_DIR_MASK; @@ -832,7 +833,7 @@ static int byt_gpio_set_direction(struct pinctrl_dev *pctl_dev, "Potential Error: Setting GPIO with direct_irq_en to output"); writel(value, val_reg); - raw_spin_unlock_irqrestore(&vg->lock, flags); + raw_spin_unlock_irqrestore(&byt_lock, flags); return 0; } @@ -901,11 +902,11 @@ static int byt_pin_config_get(struct pinctrl_dev *pctl_dev, unsigned int offset, u32 conf, pull, val, debounce; u16 arg = 0; - raw_spin_lock_irqsave(&vg->lock, flags); + raw_spin_lock_irqsave(&byt_lock, flags); conf = readl(conf_reg); pull = conf & BYT_PULL_ASSIGN_MASK; val = readl(val_reg); - raw_spin_unlock_irqrestore(&vg->lock, flags); + raw_spin_unlock_irqrestore(&byt_lock, flags); switch (param) { case PIN_CONFIG_BIAS_DISABLE: @@ -932,9 +933,9 @@ static int byt_pin_config_get(struct pinctrl_dev *pctl_dev, unsigned int offset, if (!(conf & BYT_DEBOUNCE_EN)) return -EINVAL; - raw_spin_lock_irqsave(&vg->lock, flags); + raw_spin_lock_irqsave(&byt_lock, flags); debounce = readl(db_reg); - raw_spin_unlock_irqrestore(&vg->lock, flags); + raw_spin_unlock_irqrestore(&byt_lock, flags); switch (debounce & BYT_DEBOUNCE_PULSE_MASK) { case BYT_DEBOUNCE_PULSE_375US: @@ -986,7 +987,7 @@ static int byt_pin_config_set(struct pinctrl_dev *pctl_dev, u32 conf, val, debounce; int i, ret = 0; - raw_spin_lock_irqsave(&vg->lock, flags); + raw_spin_lock_irqsave(&byt_lock, flags); conf = readl(conf_reg); val = readl(val_reg); @@ -1094,7 +1095,7 @@ static int byt_pin_config_set(struct pinctrl_dev *pctl_dev, if (!ret) writel(conf, conf_reg); - raw_spin_unlock_irqrestore(&vg->lock, flags); + raw_spin_unlock_irqrestore(&byt_lock, flags); return ret; } @@ -1119,9 +1120,9 @@ static int byt_gpio_get(struct gpio_chip *chip, unsigned int offset) unsigned long flags; u32 val; - raw_spin_lock_irqsave(&vg->lock, flags); + raw_spin_lock_irqsave(&byt_lock, flags); val = readl(reg); - raw_spin_unlock_irqrestore(&vg->lock, flags); + raw_spin_unlock_irqrestore(&byt_lock, flags); return !!(val & BYT_LEVEL); } @@ -1136,13 +1137,13 @@ static void byt_gpio_set(struct gpio_chip *chip, unsigned int offset, int value) if (!reg) return; - raw_spin_lock_irqsave(&vg->lock, flags); + raw_spin_lock_irqsave(&byt_lock, flags); old_val = readl(reg); if (value) writel(old_val | BYT_LEVEL, reg); else writel(old_val & ~BYT_LEVEL, reg); - raw_spin_unlock_irqrestore(&vg->lock, flags); + raw_spin_unlock_irqrestore(&byt_lock, flags); } static int byt_gpio_get_direction(struct gpio_chip *chip, unsigned int offset) @@ -1155,9 +1156,9 @@ static int byt_gpio_get_direction(struct gpio_chip *chip, unsigned int offset) if (!reg) return -EINVAL; - raw_spin_lock_irqsave(&vg->lock, flags); + raw_spin_lock_irqsave(&byt_lock, flags); value = readl(reg); - raw_spin_unlock_irqrestore(&vg->lock, flags); + raw_spin_unlock_irqrestore(&byt_lock, flags); if (!(value & BYT_OUTPUT_EN)) return 0; @@ -1200,14 +1201,14 @@ static void byt_gpio_dbg_show(struct seq_file *s, struct gpio_chip *chip) const char *label; unsigned int pin; - raw_spin_lock_irqsave(&vg->lock, flags); + raw_spin_lock_irqsave(&byt_lock, flags); pin = vg->soc_data->pins[i].number; reg = byt_gpio_reg(vg, pin, BYT_CONF0_REG); if (!reg) { seq_printf(s, "Could not retrieve pin %i conf0 reg\n", pin); - raw_spin_unlock_irqrestore(&vg->lock, flags); + raw_spin_unlock_irqrestore(&byt_lock, flags); continue; } conf0 = readl(reg); @@ -1216,11 +1217,11 @@ static void byt_gpio_dbg_show(struct seq_file *s, struct gpio_chip *chip) if (!reg) { seq_printf(s, "Could not retrieve pin %i val reg\n", pin); - raw_spin_unlock_irqrestore(&vg->lock, flags); + raw_spin_unlock_irqrestore(&byt_lock, flags); continue; } val = readl(reg); - raw_spin_unlock_irqrestore(&vg->lock, flags); + raw_spin_unlock_irqrestore(&byt_lock, flags); comm = byt_get_community(vg, pin); if (!comm) { @@ -1304,9 +1305,9 @@ static void byt_irq_ack(struct irq_data *d) if (!reg) return; - raw_spin_lock(&vg->lock); + raw_spin_lock(&byt_lock); writel(BIT(offset % 32), reg); - raw_spin_unlock(&vg->lock); + raw_spin_unlock(&byt_lock); } static void byt_irq_mask(struct irq_data *d) @@ -1330,7 +1331,7 @@ static void byt_irq_unmask(struct irq_data *d) if (!reg) return; - raw_spin_lock_irqsave(&vg->lock, flags); + raw_spin_lock_irqsave(&byt_lock, flags); value = readl(reg); switch (irqd_get_trigger_type(d)) { @@ -1353,7 +1354,7 @@ static void byt_irq_unmask(struct irq_data *d) writel(value, reg); - raw_spin_unlock_irqrestore(&vg->lock, flags); + raw_spin_unlock_irqrestore(&byt_lock, flags); } static int byt_irq_type(struct irq_data *d, unsigned int type) @@ -1367,7 +1368,7 @@ static int byt_irq_type(struct irq_data *d, unsigned int type) if (!reg || offset >= vg->chip.ngpio) return -EINVAL; - raw_spin_lock_irqsave(&vg->lock, flags); + raw_spin_lock_irqsave(&byt_lock, flags); value = readl(reg); WARN(value & BYT_DIRECT_IRQ_EN, @@ -1389,7 +1390,7 @@ static int byt_irq_type(struct irq_data *d, unsigned int type) else if (type & IRQ_TYPE_LEVEL_MASK) irq_set_handler_locked(d, handle_level_irq); - raw_spin_unlock_irqrestore(&vg->lock, flags); + raw_spin_unlock_irqrestore(&byt_lock, flags); return 0; } @@ -1425,9 +1426,9 @@ static void byt_gpio_irq_handler(struct irq_desc *desc) continue; } - raw_spin_lock(&vg->lock); + raw_spin_lock(&byt_lock); pending = readl(reg); - raw_spin_unlock(&vg->lock); + raw_spin_unlock(&byt_lock); for_each_set_bit(pin, &pending, 32) { virq = irq_find_mapping(vg->chip.irq.domain, base + pin); generic_handle_irq(virq); @@ -1450,9 +1451,9 @@ static void byt_init_irq_valid_mask(struct gpio_chip *chip, */ } -static void byt_gpio_irq_init_hw(struct byt_gpio *vg) +static int byt_gpio_irq_init_hw(struct gpio_chip *chip) { - struct gpio_chip *gc = &vg->chip; + struct byt_gpio *vg = gpiochip_get_data(chip); struct device *dev = &vg->pdev->dev; void __iomem *reg; u32 base, value; @@ -1476,7 +1477,7 @@ static void byt_gpio_irq_init_hw(struct byt_gpio *vg) value = readl(reg); if (value & BYT_DIRECT_IRQ_EN) { - clear_bit(i, gc->irq.valid_mask); + clear_bit(i, chip->irq.valid_mask); dev_dbg(dev, "excluding GPIO %d from IRQ domain\n", i); } else if ((value & BYT_PIN_MUX) == byt_get_gpio_mux(vg, i)) { byt_gpio_clear_triggering(vg, i); @@ -1504,6 +1505,21 @@ static void byt_gpio_irq_init_hw(struct byt_gpio *vg) "GPIO interrupt error, pins misconfigured. INT_STAT%u: 0x%08x\n", base / 32, value); } + + return 0; +} + +static int byt_gpio_add_pin_ranges(struct gpio_chip *chip) +{ + struct byt_gpio *vg = gpiochip_get_data(chip); + struct device *dev = &vg->pdev->dev; + int ret; + + ret = gpiochip_add_pin_range(chip, dev_name(dev), 0, 0, vg->soc_data->npins); + if (ret) + dev_err(dev, "failed to add GPIO pin range\n"); + + return ret; } static int byt_gpio_probe(struct byt_gpio *vg) @@ -1518,6 +1534,7 @@ static int byt_gpio_probe(struct byt_gpio *vg) gc->label = dev_name(&vg->pdev->dev); gc->base = -1; gc->can_sleep = false; + gc->add_pin_ranges = byt_gpio_add_pin_ranges; gc->parent = &vg->pdev->dev; gc->ngpio = vg->soc_data->npins; gc->irq.init_valid_mask = byt_init_irq_valid_mask; @@ -1528,33 +1545,30 @@ static int byt_gpio_probe(struct byt_gpio *vg) if (!vg->saved_context) return -ENOMEM; #endif - ret = devm_gpiochip_add_data(&vg->pdev->dev, gc, vg); - if (ret) { - dev_err(&vg->pdev->dev, "failed adding byt-gpio chip\n"); - return ret; - } - - ret = gpiochip_add_pin_range(&vg->chip, dev_name(&vg->pdev->dev), - 0, 0, vg->soc_data->npins); - if (ret) { - dev_err(&vg->pdev->dev, "failed to add GPIO pin range\n"); - return ret; - } /* set up interrupts */ irq_rc = platform_get_resource(vg->pdev, IORESOURCE_IRQ, 0); if (irq_rc && irq_rc->start) { - byt_gpio_irq_init_hw(vg); - ret = gpiochip_irqchip_add(gc, &byt_irqchip, 0, - handle_bad_irq, IRQ_TYPE_NONE); - if (ret) { - dev_err(&vg->pdev->dev, "failed to add irqchip\n"); - return ret; - } + struct gpio_irq_chip *girq; + + girq = &gc->irq; + girq->chip = &byt_irqchip; + girq->init_hw = byt_gpio_irq_init_hw; + girq->parent_handler = byt_gpio_irq_handler; + girq->num_parents = 1; + girq->parents = devm_kcalloc(&vg->pdev->dev, girq->num_parents, + sizeof(*girq->parents), GFP_KERNEL); + if (!girq->parents) + return -ENOMEM; + girq->parents[0] = (unsigned int)irq_rc->start; + girq->default_type = IRQ_TYPE_NONE; + girq->handler = handle_bad_irq; + } - gpiochip_set_chained_irqchip(gc, &byt_irqchip, - (unsigned)irq_rc->start, - byt_gpio_irq_handler); + ret = devm_gpiochip_add_data(&vg->pdev->dev, gc, vg); + if (ret) { + dev_err(&vg->pdev->dev, "failed adding byt-gpio chip\n"); + return ret; } return ret; @@ -1638,8 +1652,6 @@ static int byt_pinctrl_probe(struct platform_device *pdev) return PTR_ERR(vg->pctl_dev); } - raw_spin_lock_init(&vg->lock); - ret = byt_gpio_probe(vg); if (ret) return ret; @@ -1654,8 +1666,11 @@ static int byt_pinctrl_probe(struct platform_device *pdev) static int byt_gpio_suspend(struct device *dev) { struct byt_gpio *vg = dev_get_drvdata(dev); + unsigned long flags; int i; + raw_spin_lock_irqsave(&byt_lock, flags); + for (i = 0; i < vg->soc_data->npins; i++) { void __iomem *reg; u32 value; @@ -1676,14 +1691,18 @@ static int byt_gpio_suspend(struct device *dev) vg->saved_context[i].val = value; } + raw_spin_unlock_irqrestore(&byt_lock, flags); return 0; } static int byt_gpio_resume(struct device *dev) { struct byt_gpio *vg = dev_get_drvdata(dev); + unsigned long flags; int i; + raw_spin_lock_irqsave(&byt_lock, flags); + for (i = 0; i < vg->soc_data->npins; i++) { void __iomem *reg; u32 value; @@ -1721,6 +1740,7 @@ static int byt_gpio_resume(struct device *dev) } } + raw_spin_unlock_irqrestore(&byt_lock, flags); return 0; } #endif diff --git a/drivers/pinctrl/intel/pinctrl-cherryview.c b/drivers/pinctrl/intel/pinctrl-cherryview.c index 2c419fa5d1c1..60527b93a711 100644 --- a/drivers/pinctrl/intel/pinctrl-cherryview.c +++ b/drivers/pinctrl/intel/pinctrl-cherryview.c @@ -149,6 +149,7 @@ struct chv_pin_context { * @chip: GPIO chip in this pin controller * @irqchip: IRQ chip in this pin controller * @regs: MMIO registers + * @irq: Our parent irq * @intr_lines: Stores mapping between 16 HW interrupt wires and GPIO * offset (in GPIO number space) * @community: Community this pinctrl instance represents @@ -165,7 +166,8 @@ struct chv_pinctrl { struct gpio_chip chip; struct irq_chip irqchip; void __iomem *regs; - unsigned intr_lines[16]; + unsigned int irq; + unsigned int intr_lines[16]; const struct chv_community *community; u32 saved_intmask; struct chv_pin_context *saved_pin_context; @@ -379,7 +381,7 @@ static const struct chv_community southwest_community = { .gpio_ranges = southwest_gpio_ranges, .ngpio_ranges = ARRAY_SIZE(southwest_gpio_ranges), /* - * Southwest community can benerate GPIO interrupts only for the + * Southwest community can generate GPIO interrupts only for the * first 8 interrupts. The upper half (8-15) can only be used to * trigger GPEs. */ @@ -1480,7 +1482,7 @@ static void chv_gpio_irq_handler(struct irq_desc *desc) pending = readl(pctrl->regs + CHV_INTSTAT); for_each_set_bit(intr_line, &pending, pctrl->community->nirqs) { - unsigned irq, offset; + unsigned int irq, offset; offset = pctrl->intr_lines[intr_line]; irq = irq_find_mapping(gc->irq.domain, offset); @@ -1555,39 +1557,9 @@ static void chv_init_irq_valid_mask(struct gpio_chip *chip, } } -static int chv_gpio_probe(struct chv_pinctrl *pctrl, int irq) +static int chv_gpio_irq_init_hw(struct gpio_chip *chip) { - const struct chv_gpio_pinrange *range; - struct gpio_chip *chip = &pctrl->chip; - bool need_valid_mask = !dmi_check_system(chv_no_valid_mask); - const struct chv_community *community = pctrl->community; - int ret, i, irq_base; - - *chip = chv_gpio_chip; - - chip->ngpio = community->pins[community->npins - 1].number + 1; - chip->label = dev_name(pctrl->dev); - chip->parent = pctrl->dev; - chip->base = -1; - if (need_valid_mask) - chip->irq.init_valid_mask = chv_init_irq_valid_mask; - - ret = devm_gpiochip_add_data(pctrl->dev, chip, pctrl); - if (ret) { - dev_err(pctrl->dev, "Failed to register gpiochip\n"); - return ret; - } - - for (i = 0; i < community->ngpio_ranges; i++) { - range = &community->gpio_ranges[i]; - ret = gpiochip_add_pin_range(chip, dev_name(pctrl->dev), - range->base, range->base, - range->npins); - if (ret) { - dev_err(pctrl->dev, "failed to add GPIO pin range\n"); - return ret; - } - } + struct chv_pinctrl *pctrl = gpiochip_get_data(chip); /* * The same set of machines in chv_no_valid_mask[] have incorrectly @@ -1596,7 +1568,7 @@ static int chv_gpio_probe(struct chv_pinctrl *pctrl, int irq) * * See also https://bugzilla.kernel.org/show_bug.cgi?id=197953. */ - if (!need_valid_mask) { + if (!pctrl->chip.irq.init_valid_mask) { /* * Mask all interrupts the community is able to generate * but leave the ones that can only generate GPEs unmasked. @@ -1608,15 +1580,47 @@ static int chv_gpio_probe(struct chv_pinctrl *pctrl, int irq) /* Clear all interrupts */ chv_writel(0xffff, pctrl->regs + CHV_INTSTAT); - if (!need_valid_mask) { - irq_base = devm_irq_alloc_descs(pctrl->dev, -1, 0, - community->npins, NUMA_NO_NODE); - if (irq_base < 0) { - dev_err(pctrl->dev, "Failed to allocate IRQ numbers\n"); - return irq_base; + return 0; +} + +static int chv_gpio_add_pin_ranges(struct gpio_chip *chip) +{ + struct chv_pinctrl *pctrl = gpiochip_get_data(chip); + const struct chv_community *community = pctrl->community; + const struct chv_gpio_pinrange *range; + int ret, i; + + for (i = 0; i < community->ngpio_ranges; i++) { + range = &community->gpio_ranges[i]; + ret = gpiochip_add_pin_range(chip, dev_name(pctrl->dev), + range->base, range->base, + range->npins); + if (ret) { + dev_err(pctrl->dev, "failed to add GPIO pin range\n"); + return ret; } } + return 0; +} + +static int chv_gpio_probe(struct chv_pinctrl *pctrl, int irq) +{ + const struct chv_gpio_pinrange *range; + struct gpio_chip *chip = &pctrl->chip; + bool need_valid_mask = !dmi_check_system(chv_no_valid_mask); + const struct chv_community *community = pctrl->community; + int ret, i, irq_base; + + *chip = chv_gpio_chip; + + chip->ngpio = community->pins[community->npins - 1].number + 1; + chip->label = dev_name(pctrl->dev); + chip->add_pin_ranges = chv_gpio_add_pin_ranges; + chip->parent = pctrl->dev; + chip->base = -1; + + pctrl->irq = irq; pctrl->irqchip.name = "chv-gpio"; pctrl->irqchip.irq_startup = chv_gpio_irq_startup; pctrl->irqchip.irq_ack = chv_gpio_irq_ack; @@ -1625,10 +1629,27 @@ static int chv_gpio_probe(struct chv_pinctrl *pctrl, int irq) pctrl->irqchip.irq_set_type = chv_gpio_irq_type; pctrl->irqchip.flags = IRQCHIP_SKIP_SET_WAKE; - ret = gpiochip_irqchip_add(chip, &pctrl->irqchip, 0, - handle_bad_irq, IRQ_TYPE_NONE); + chip->irq.chip = &pctrl->irqchip; + chip->irq.init_hw = chv_gpio_irq_init_hw; + chip->irq.parent_handler = chv_gpio_irq_handler; + chip->irq.num_parents = 1; + chip->irq.parents = &pctrl->irq; + chip->irq.default_type = IRQ_TYPE_NONE; + chip->irq.handler = handle_bad_irq; + if (need_valid_mask) { + chip->irq.init_valid_mask = chv_init_irq_valid_mask; + } else { + irq_base = devm_irq_alloc_descs(pctrl->dev, -1, 0, + community->npins, NUMA_NO_NODE); + if (irq_base < 0) { + dev_err(pctrl->dev, "Failed to allocate IRQ numbers\n"); + return irq_base; + } + } + + ret = devm_gpiochip_add_data(pctrl->dev, chip, pctrl); if (ret) { - dev_err(pctrl->dev, "failed to add IRQ chip\n"); + dev_err(pctrl->dev, "Failed to register gpiochip\n"); return ret; } @@ -1642,8 +1663,6 @@ static int chv_gpio_probe(struct chv_pinctrl *pctrl, int irq) } } - gpiochip_set_chained_irqchip(chip, &pctrl->irqchip, irq, - chv_gpio_irq_handler); return 0; } diff --git a/drivers/pinctrl/intel/pinctrl-intel.c b/drivers/pinctrl/intel/pinctrl-intel.c index 83981ad66a71..4860bc9a4e48 100644 --- a/drivers/pinctrl/intel/pinctrl-intel.c +++ b/drivers/pinctrl/intel/pinctrl-intel.c @@ -1131,7 +1131,7 @@ static irqreturn_t intel_gpio_community_irq_handler(struct intel_pinctrl *pctrl, pending &= enabled; for_each_set_bit(gpp_offset, &pending, padgrp->size) { - unsigned irq; + unsigned int irq; irq = irq_find_mapping(gc->irq.domain, padgrp->gpio_base + gpp_offset); @@ -1181,7 +1181,7 @@ static int intel_gpio_add_pin_ranges(struct intel_pinctrl *pctrl, return ret; } -static unsigned intel_gpio_ngpio(const struct intel_pinctrl *pctrl) +static unsigned int intel_gpio_ngpio(const struct intel_pinctrl *pctrl) { const struct intel_community *community; unsigned int ngpio = 0; @@ -1595,16 +1595,65 @@ intel_gpio_is_requested(struct gpio_chip *chip, int base, unsigned int size) return requested; } -static u32 -intel_gpio_update_pad_mode(void __iomem *hostown, u32 mask, u32 value) +static bool intel_gpio_update_reg(void __iomem *reg, u32 mask, u32 value) { u32 curr, updated; - curr = readl(hostown); + curr = readl(reg); + updated = (curr & ~mask) | (value & mask); - writel(updated, hostown); + if (curr == updated) + return false; + + writel(updated, reg); + return true; +} + +static void intel_restore_hostown(struct intel_pinctrl *pctrl, unsigned int c, + void __iomem *base, unsigned int gpp, u32 saved) +{ + const struct intel_community *community = &pctrl->communities[c]; + const struct intel_padgroup *padgrp = &community->gpps[gpp]; + struct device *dev = pctrl->dev; + u32 requested; + + if (padgrp->gpio_base < 0) + return; - return curr; + requested = intel_gpio_is_requested(&pctrl->chip, padgrp->gpio_base, padgrp->size); + if (!intel_gpio_update_reg(base + gpp * 4, requested, saved)) + return; + + dev_dbg(dev, "restored hostown %u/%u %#08x\n", c, gpp, readl(base + gpp * 4)); +} + +static void intel_restore_intmask(struct intel_pinctrl *pctrl, unsigned int c, + void __iomem *base, unsigned int gpp, u32 saved) +{ + struct device *dev = pctrl->dev; + + if (!intel_gpio_update_reg(base + gpp * 4, ~0U, saved)) + return; + + dev_dbg(dev, "restored mask %u/%u %#08x\n", c, gpp, readl(base + gpp * 4)); +} + +static void intel_restore_padcfg(struct intel_pinctrl *pctrl, unsigned int pin, + unsigned int reg, u32 saved) +{ + u32 mask = (reg == PADCFG0) ? PADCFG0_GPIORXSTATE : 0; + unsigned int n = reg / sizeof(u32); + struct device *dev = pctrl->dev; + void __iomem *padcfg; + + padcfg = intel_get_padcfg(pctrl, pin, reg); + if (!padcfg) + return; + + if (!intel_gpio_update_reg(padcfg, ~mask, saved)) + return; + + dev_dbg(dev, "restored pin %u padcfg%u %#08x\n", pin, n, readl(padcfg)); } int intel_pinctrl_resume_noirq(struct device *dev) @@ -1620,37 +1669,13 @@ int intel_pinctrl_resume_noirq(struct device *dev) pads = pctrl->context.pads; for (i = 0; i < pctrl->soc->npins; i++) { const struct pinctrl_pin_desc *desc = &pctrl->soc->pins[i]; - void __iomem *padcfg; - u32 val; if (!intel_pinctrl_should_save(pctrl, desc->number)) continue; - padcfg = intel_get_padcfg(pctrl, desc->number, PADCFG0); - val = readl(padcfg) & ~PADCFG0_GPIORXSTATE; - if (val != pads[i].padcfg0) { - writel(pads[i].padcfg0, padcfg); - dev_dbg(dev, "restored pin %u padcfg0 %#08x\n", - desc->number, readl(padcfg)); - } - - padcfg = intel_get_padcfg(pctrl, desc->number, PADCFG1); - val = readl(padcfg); - if (val != pads[i].padcfg1) { - writel(pads[i].padcfg1, padcfg); - dev_dbg(dev, "restored pin %u padcfg1 %#08x\n", - desc->number, readl(padcfg)); - } - - padcfg = intel_get_padcfg(pctrl, desc->number, PADCFG2); - if (padcfg) { - val = readl(padcfg); - if (val != pads[i].padcfg2) { - writel(pads[i].padcfg2, padcfg); - dev_dbg(dev, "restored pin %u padcfg2 %#08x\n", - desc->number, readl(padcfg)); - } - } + intel_restore_padcfg(pctrl, desc->number, PADCFG0, pads[i].padcfg0); + intel_restore_padcfg(pctrl, desc->number, PADCFG1, pads[i].padcfg1); + intel_restore_padcfg(pctrl, desc->number, PADCFG2, pads[i].padcfg2); } communities = pctrl->context.communities; @@ -1660,30 +1685,12 @@ int intel_pinctrl_resume_noirq(struct device *dev) unsigned int gpp; base = community->regs + community->ie_offset; - for (gpp = 0; gpp < community->ngpps; gpp++) { - writel(communities[i].intmask[gpp], base + gpp * 4); - dev_dbg(dev, "restored mask %d/%u %#08x\n", i, gpp, - readl(base + gpp * 4)); - } + for (gpp = 0; gpp < community->ngpps; gpp++) + intel_restore_intmask(pctrl, i, base, gpp, communities[i].intmask[gpp]); base = community->regs + community->hostown_offset; - for (gpp = 0; gpp < community->ngpps; gpp++) { - const struct intel_padgroup *padgrp = &community->gpps[gpp]; - u32 requested = 0, value = 0; - u32 saved = communities[i].hostown[gpp]; - - if (padgrp->gpio_base < 0) - continue; - - requested = intel_gpio_is_requested(&pctrl->chip, - padgrp->gpio_base, padgrp->size); - value = intel_gpio_update_pad_mode(base + gpp * 4, - requested, saved); - if ((value ^ saved) & requested) { - dev_warn(dev, "restore hostown %d/%u %#8x->%#8x\n", - i, gpp, value, saved); - } - } + for (gpp = 0; gpp < community->ngpps; gpp++) + intel_restore_hostown(pctrl, i, base, gpp, communities[i].hostown[gpp]); } return 0; diff --git a/drivers/pinctrl/intel/pinctrl-lewisburg.c b/drivers/pinctrl/intel/pinctrl-lewisburg.c index 2e06fb1464ab..7fdf4257df1e 100644 --- a/drivers/pinctrl/intel/pinctrl-lewisburg.c +++ b/drivers/pinctrl/intel/pinctrl-lewisburg.c @@ -33,6 +33,7 @@ .npins = ((e) - (s) + 1), \ } +/* Lewisburg */ static const struct pinctrl_pin_desc lbg_pins[] = { /* GPP_A */ PINCTRL_PIN(0, "RCINB"), @@ -72,7 +73,7 @@ static const struct pinctrl_pin_desc lbg_pins[] = { PINCTRL_PIN(33, "SRCCLKREQB_4"), PINCTRL_PIN(34, "SRCCLKREQB_5"), PINCTRL_PIN(35, "GPP_B_11"), - PINCTRL_PIN(36, "GLB_RST_WARN_N"), + PINCTRL_PIN(36, "SLP_S0B"), PINCTRL_PIN(37, "PLTRSTB"), PINCTRL_PIN(38, "SPKR"), PINCTRL_PIN(39, "GPP_B_15"), @@ -185,96 +186,96 @@ static const struct pinctrl_pin_desc lbg_pins[] = { PINCTRL_PIN(141, "GBE_PCI_DIS"), PINCTRL_PIN(142, "GBE_LAN_DIS"), PINCTRL_PIN(143, "GPP_I_10"), - PINCTRL_PIN(144, "GPIO_RCOMP_3P3"), /* GPP_J */ - PINCTRL_PIN(145, "GBE_LED_0_0"), - PINCTRL_PIN(146, "GBE_LED_0_1"), - PINCTRL_PIN(147, "GBE_LED_1_0"), - PINCTRL_PIN(148, "GBE_LED_1_1"), - PINCTRL_PIN(149, "GBE_LED_2_0"), - PINCTRL_PIN(150, "GBE_LED_2_1"), - PINCTRL_PIN(151, "GBE_LED_3_0"), - PINCTRL_PIN(152, "GBE_LED_3_1"), - PINCTRL_PIN(153, "GBE_SCL_0"), - PINCTRL_PIN(154, "GBE_SDA_0"), - PINCTRL_PIN(155, "GBE_SCL_1"), - PINCTRL_PIN(156, "GBE_SDA_1"), - PINCTRL_PIN(157, "GBE_SCL_2"), - PINCTRL_PIN(158, "GBE_SDA_2"), - PINCTRL_PIN(159, "GBE_SCL_3"), - PINCTRL_PIN(160, "GBE_SDA_3"), - PINCTRL_PIN(161, "GBE_SDP_0_0"), - PINCTRL_PIN(162, "GBE_SDP_0_1"), - PINCTRL_PIN(163, "GBE_SDP_1_0"), - PINCTRL_PIN(164, "GBE_SDP_1_1"), - PINCTRL_PIN(165, "GBE_SDP_2_0"), - PINCTRL_PIN(166, "GBE_SDP_2_1"), - PINCTRL_PIN(167, "GBE_SDP_3_0"), - PINCTRL_PIN(168, "GBE_SDP_3_1"), + PINCTRL_PIN(144, "GBE_LED_0_0"), + PINCTRL_PIN(145, "GBE_LED_0_1"), + PINCTRL_PIN(146, "GBE_LED_1_0"), + PINCTRL_PIN(147, "GBE_LED_1_1"), + PINCTRL_PIN(148, "GBE_LED_2_0"), + PINCTRL_PIN(149, "GBE_LED_2_1"), + PINCTRL_PIN(150, "GBE_LED_3_0"), + PINCTRL_PIN(151, "GBE_LED_3_1"), + PINCTRL_PIN(152, "GBE_SCL_0"), + PINCTRL_PIN(153, "GBE_SDA_0"), + PINCTRL_PIN(154, "GBE_SCL_1"), + PINCTRL_PIN(155, "GBE_SDA_1"), + PINCTRL_PIN(156, "GBE_SCL_2"), + PINCTRL_PIN(157, "GBE_SDA_2"), + PINCTRL_PIN(158, "GBE_SCL_3"), + PINCTRL_PIN(159, "GBE_SDA_3"), + PINCTRL_PIN(160, "GBE_SDP_0_0"), + PINCTRL_PIN(161, "GBE_SDP_0_1"), + PINCTRL_PIN(162, "GBE_SDP_1_0"), + PINCTRL_PIN(163, "GBE_SDP_1_1"), + PINCTRL_PIN(164, "GBE_SDP_2_0"), + PINCTRL_PIN(165, "GBE_SDP_2_1"), + PINCTRL_PIN(166, "GBE_SDP_3_0"), + PINCTRL_PIN(167, "GBE_SDP_3_1"), /* GPP_K */ - PINCTRL_PIN(169, "GBE_RMIICLK"), - PINCTRL_PIN(170, "GBE_RMII_TXD_0"), - PINCTRL_PIN(171, "GBE_RMII_TXD_1"), + PINCTRL_PIN(168, "GBE_RMIICLK"), + PINCTRL_PIN(169, "GBE_RMII_RXD_0"), + PINCTRL_PIN(170, "GBE_RMII_RXD_1"), + PINCTRL_PIN(171, "GBE_RMII_CRS_DV"), PINCTRL_PIN(172, "GBE_RMII_TX_EN"), - PINCTRL_PIN(173, "GBE_RMII_CRS_DV"), - PINCTRL_PIN(174, "GBE_RMII_RXD_0"), - PINCTRL_PIN(175, "GBE_RMII_RXD_1"), - PINCTRL_PIN(176, "GBE_RMII_RX_ER"), - PINCTRL_PIN(177, "GBE_RMII_ARBIN"), - PINCTRL_PIN(178, "GBE_RMII_ARB_OUT"), - PINCTRL_PIN(179, "PE_RST_N"), - PINCTRL_PIN(180, "GPIO_RCOMP_1P8_3P3"), + PINCTRL_PIN(173, "GBE_RMII_TXD_0"), + PINCTRL_PIN(174, "GBE_RMII_TXD_1"), + PINCTRL_PIN(175, "GBE_RMII_RX_ER"), + PINCTRL_PIN(176, "GBE_RMII_ARBIN"), + PINCTRL_PIN(177, "GBE_RMII_ARB_OUT"), + PINCTRL_PIN(178, "PE_RST_N"), /* GPP_G */ - PINCTRL_PIN(181, "FAN_TACH_0"), - PINCTRL_PIN(182, "FAN_TACH_1"), - PINCTRL_PIN(183, "FAN_TACH_2"), - PINCTRL_PIN(184, "FAN_TACH_3"), - PINCTRL_PIN(185, "FAN_TACH_4"), - PINCTRL_PIN(186, "FAN_TACH_5"), - PINCTRL_PIN(187, "FAN_TACH_6"), - PINCTRL_PIN(188, "FAN_TACH_7"), - PINCTRL_PIN(189, "FAN_PWM_0"), - PINCTRL_PIN(190, "FAN_PWM_1"), - PINCTRL_PIN(191, "FAN_PWM_2"), - PINCTRL_PIN(192, "FAN_PWM_3"), - PINCTRL_PIN(193, "GSXDOUT"), - PINCTRL_PIN(194, "GSXSLOAD"), - PINCTRL_PIN(195, "GSXDIN"), - PINCTRL_PIN(196, "GSXSRESETB"), - PINCTRL_PIN(197, "GSXCLK"), - PINCTRL_PIN(198, "ADR_COMPLETE"), - PINCTRL_PIN(199, "NMIB"), - PINCTRL_PIN(200, "SMIB"), - PINCTRL_PIN(201, "SSATA_DEVSLP_0"), - PINCTRL_PIN(202, "SSATA_DEVSLP_1"), - PINCTRL_PIN(203, "SSATA_DEVSLP_2"), - PINCTRL_PIN(204, "SSATAXPCIE0_SSATAGP0"), + PINCTRL_PIN(179, "FAN_TACH_0"), + PINCTRL_PIN(180, "FAN_TACH_1"), + PINCTRL_PIN(181, "FAN_TACH_2"), + PINCTRL_PIN(182, "FAN_TACH_3"), + PINCTRL_PIN(183, "FAN_TACH_4"), + PINCTRL_PIN(184, "FAN_TACH_5"), + PINCTRL_PIN(185, "FAN_TACH_6"), + PINCTRL_PIN(186, "FAN_TACH_7"), + PINCTRL_PIN(187, "FAN_PWM_0"), + PINCTRL_PIN(188, "FAN_PWM_1"), + PINCTRL_PIN(189, "FAN_PWM_2"), + PINCTRL_PIN(190, "FAN_PWM_3"), + PINCTRL_PIN(191, "GSXDOUT"), + PINCTRL_PIN(192, "GSXSLOAD"), + PINCTRL_PIN(193, "GSXDIN"), + PINCTRL_PIN(194, "GSXSRESETB"), + PINCTRL_PIN(195, "GSXCLK"), + PINCTRL_PIN(196, "ADR_COMPLETE"), + PINCTRL_PIN(197, "NMIB"), + PINCTRL_PIN(198, "SMIB"), + PINCTRL_PIN(199, "SSATA_DEVSLP_0"), + PINCTRL_PIN(200, "SSATA_DEVSLP_1"), + PINCTRL_PIN(201, "SSATA_DEVSLP_2"), + PINCTRL_PIN(202, "SSATAXPCIE0_SSATAGP0"), /* GPP_H */ - PINCTRL_PIN(205, "SRCCLKREQB_6"), - PINCTRL_PIN(206, "SRCCLKREQB_7"), - PINCTRL_PIN(207, "SRCCLKREQB_8"), - PINCTRL_PIN(208, "SRCCLKREQB_9"), - PINCTRL_PIN(209, "SRCCLKREQB_10"), - PINCTRL_PIN(210, "SRCCLKREQB_11"), - PINCTRL_PIN(211, "SRCCLKREQB_12"), - PINCTRL_PIN(212, "SRCCLKREQB_13"), - PINCTRL_PIN(213, "SRCCLKREQB_14"), - PINCTRL_PIN(214, "SRCCLKREQB_15"), - PINCTRL_PIN(215, "SML2CLK"), - PINCTRL_PIN(216, "SML2DATA"), - PINCTRL_PIN(217, "SML2ALERTB"), - PINCTRL_PIN(218, "SML3CLK"), - PINCTRL_PIN(219, "SML3DATA"), - PINCTRL_PIN(220, "SML3ALERTB"), - PINCTRL_PIN(221, "SML4CLK"), - PINCTRL_PIN(222, "SML4DATA"), - PINCTRL_PIN(223, "SML4ALERTB"), - PINCTRL_PIN(224, "SSATAXPCIE1_SSATAGP1"), - PINCTRL_PIN(225, "SSATAXPCIE2_SSATAGP2"), - PINCTRL_PIN(226, "SSATAXPCIE3_SSATAGP3"), - PINCTRL_PIN(227, "SSATAXPCIE4_SSATAGP4"), - PINCTRL_PIN(228, "SSATAXPCIE5_SSATAGP5"), + PINCTRL_PIN(203, "SRCCLKREQB_6"), + PINCTRL_PIN(204, "SRCCLKREQB_7"), + PINCTRL_PIN(205, "SRCCLKREQB_8"), + PINCTRL_PIN(206, "SRCCLKREQB_9"), + PINCTRL_PIN(207, "SRCCLKREQB_10"), + PINCTRL_PIN(208, "SRCCLKREQB_11"), + PINCTRL_PIN(209, "SRCCLKREQB_12"), + PINCTRL_PIN(210, "SRCCLKREQB_13"), + PINCTRL_PIN(211, "SRCCLKREQB_14"), + PINCTRL_PIN(212, "SRCCLKREQB_15"), + PINCTRL_PIN(213, "SML2CLK"), + PINCTRL_PIN(214, "SML2DATA"), + PINCTRL_PIN(215, "SML2ALERTB"), + PINCTRL_PIN(216, "SML3CLK"), + PINCTRL_PIN(217, "SML3DATA"), + PINCTRL_PIN(218, "SML3ALERTB"), + PINCTRL_PIN(219, "SML4CLK"), + PINCTRL_PIN(220, "SML4DATA"), + PINCTRL_PIN(221, "SML4ALERTB"), + PINCTRL_PIN(222, "SSATAXPCIE1_SSATAGP1"), + PINCTRL_PIN(223, "SSATAXPCIE2_SSATAGP2"), + PINCTRL_PIN(224, "SSATAXPCIE3_SSATAGP3"), + PINCTRL_PIN(225, "SSATAXPCIE4_SSATAGP4"), + PINCTRL_PIN(226, "SSATAXPCIE5_SSATAGP5"), /* GPP_L */ + PINCTRL_PIN(227, "GPP_L_0"), + PINCTRL_PIN(228, "EC_CSME_INTR_OUT"), PINCTRL_PIN(229, "VISA2CH0_D0"), PINCTRL_PIN(230, "VISA2CH0_D1"), PINCTRL_PIN(231, "VISA2CH0_D2"), diff --git a/drivers/pinctrl/intel/pinctrl-tigerlake.c b/drivers/pinctrl/intel/pinctrl-tigerlake.c new file mode 100644 index 000000000000..58572b15b3ce --- /dev/null +++ b/drivers/pinctrl/intel/pinctrl-tigerlake.c @@ -0,0 +1,454 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Intel Tiger Lake PCH pinctrl/GPIO driver + * + * Copyright (C) 2019, Intel Corporation + * Authors: Andy Shevchenko <andriy.shevchenko@linux.intel.com> + * Mika Westerberg <mika.westerberg@linux.intel.com> + */ + +#include <linux/mod_devicetable.h> +#include <linux/module.h> +#include <linux/platform_device.h> + +#include <linux/pinctrl/pinctrl.h> + +#include "pinctrl-intel.h" + +#define TGL_PAD_OWN 0x020 +#define TGL_PADCFGLOCK 0x080 +#define TGL_HOSTSW_OWN 0x0b0 +#define TGL_GPI_IS 0x100 +#define TGL_GPI_IE 0x120 + +#define TGL_GPP(r, s, e) \ + { \ + .reg_num = (r), \ + .base = (s), \ + .size = ((e) - (s) + 1), \ + } + +#define TGL_COMMUNITY(s, e, g) \ + { \ + .padown_offset = TGL_PAD_OWN, \ + .padcfglock_offset = TGL_PADCFGLOCK, \ + .hostown_offset = TGL_HOSTSW_OWN, \ + .is_offset = TGL_GPI_IS, \ + .ie_offset = TGL_GPI_IE, \ + .pin_base = (s), \ + .npins = ((e) - (s) + 1), \ + .gpps = (g), \ + .ngpps = ARRAY_SIZE(g), \ + } + +/* Tiger Lake-LP */ +static const struct pinctrl_pin_desc tgllp_community0_pins[] = { + /* GPP_B */ + PINCTRL_PIN(0, "CORE_VID_0"), + PINCTRL_PIN(1, "CORE_VID_1"), + PINCTRL_PIN(2, "VRALERTB"), + PINCTRL_PIN(3, "CPU_GP_2"), + PINCTRL_PIN(4, "CPU_GP_3"), + PINCTRL_PIN(5, "ISH_I2C0_SDA"), + PINCTRL_PIN(6, "ISH_I2C0_SCL"), + PINCTRL_PIN(7, "ISH_I2C1_SDA"), + PINCTRL_PIN(8, "ISH_I2C1_SCL"), + PINCTRL_PIN(9, "I2C5_SDA"), + PINCTRL_PIN(10, "I2C5_SCL"), + PINCTRL_PIN(11, "PMCALERTB"), + PINCTRL_PIN(12, "SLP_S0B"), + PINCTRL_PIN(13, "PLTRSTB"), + PINCTRL_PIN(14, "SPKR"), + PINCTRL_PIN(15, "GSPI0_CS0B"), + PINCTRL_PIN(16, "GSPI0_CLK"), + PINCTRL_PIN(17, "GSPI0_MISO"), + PINCTRL_PIN(18, "GSPI0_MOSI"), + PINCTRL_PIN(19, "GSPI1_CS0B"), + PINCTRL_PIN(20, "GSPI1_CLK"), + PINCTRL_PIN(21, "GSPI1_MISO"), + PINCTRL_PIN(22, "GSPI1_MOSI"), + PINCTRL_PIN(23, "SML1ALERTB"), + PINCTRL_PIN(24, "GSPI0_CLK_LOOPBK"), + PINCTRL_PIN(25, "GSPI1_CLK_LOOPBK"), + /* GPP_T */ + PINCTRL_PIN(26, "I2C6_SDA"), + PINCTRL_PIN(27, "I2C6_SCL"), + PINCTRL_PIN(28, "I2C7_SDA"), + PINCTRL_PIN(29, "I2C7_SCL"), + PINCTRL_PIN(30, "UART4_RXD"), + PINCTRL_PIN(31, "UART4_TXD"), + PINCTRL_PIN(32, "UART4_RTSB"), + PINCTRL_PIN(33, "UART4_CTSB"), + PINCTRL_PIN(34, "UART5_RXD"), + PINCTRL_PIN(35, "UART5_TXD"), + PINCTRL_PIN(36, "UART5_RTSB"), + PINCTRL_PIN(37, "UART5_CTSB"), + PINCTRL_PIN(38, "UART6_RXD"), + PINCTRL_PIN(39, "UART6_TXD"), + PINCTRL_PIN(40, "UART6_RTSB"), + PINCTRL_PIN(41, "UART6_CTSB"), + /* GPP_A */ + PINCTRL_PIN(42, "ESPI_IO_0"), + PINCTRL_PIN(43, "ESPI_IO_1"), + PINCTRL_PIN(44, "ESPI_IO_2"), + PINCTRL_PIN(45, "ESPI_IO_3"), + PINCTRL_PIN(46, "ESPI_CSB"), + PINCTRL_PIN(47, "ESPI_CLK"), + PINCTRL_PIN(48, "ESPI_RESETB"), + PINCTRL_PIN(49, "I2S2_SCLK"), + PINCTRL_PIN(50, "I2S2_SFRM"), + PINCTRL_PIN(51, "I2S2_TXD"), + PINCTRL_PIN(52, "I2S2_RXD"), + PINCTRL_PIN(53, "PMC_I2C_SDA"), + PINCTRL_PIN(54, "SATAXPCIE_1"), + PINCTRL_PIN(55, "PMC_I2C_SCL"), + PINCTRL_PIN(56, "USB2_OCB_1"), + PINCTRL_PIN(57, "USB2_OCB_2"), + PINCTRL_PIN(58, "USB2_OCB_3"), + PINCTRL_PIN(59, "DDSP_HPD_C"), + PINCTRL_PIN(60, "DDSP_HPD_B"), + PINCTRL_PIN(61, "DDSP_HPD_1"), + PINCTRL_PIN(62, "DDSP_HPD_2"), + PINCTRL_PIN(63, "GPPC_A_21"), + PINCTRL_PIN(64, "GPPC_A_22"), + PINCTRL_PIN(65, "I2S1_SCLK"), + PINCTRL_PIN(66, "ESPI_CLK_LOOPBK"), +}; + +static const struct intel_padgroup tgllp_community0_gpps[] = { + TGL_GPP(0, 0, 25), /* GPP_B */ + TGL_GPP(1, 26, 41), /* GPP_T */ + TGL_GPP(2, 42, 66), /* GPP_A */ +}; + +static const struct intel_community tgllp_community0[] = { + TGL_COMMUNITY(0, 66, tgllp_community0_gpps), +}; + +static const struct intel_pinctrl_soc_data tgllp_community0_soc_data = { + .uid = "0", + .pins = tgllp_community0_pins, + .npins = ARRAY_SIZE(tgllp_community0_pins), + .communities = tgllp_community0, + .ncommunities = ARRAY_SIZE(tgllp_community0), +}; + +static const struct pinctrl_pin_desc tgllp_community1_pins[] = { + /* GPP_S */ + PINCTRL_PIN(0, "SNDW0_CLK"), + PINCTRL_PIN(1, "SNDW0_DATA"), + PINCTRL_PIN(2, "SNDW1_CLK"), + PINCTRL_PIN(3, "SNDW1_DATA"), + PINCTRL_PIN(4, "SNDW2_CLK"), + PINCTRL_PIN(5, "SNDW2_DATA"), + PINCTRL_PIN(6, "SNDW3_CLK"), + PINCTRL_PIN(7, "SNDW3_DATA"), + /* GPP_H */ + PINCTRL_PIN(8, "GPPC_H_0"), + PINCTRL_PIN(9, "GPPC_H_1"), + PINCTRL_PIN(10, "GPPC_H_2"), + PINCTRL_PIN(11, "SX_EXIT_HOLDOFFB"), + PINCTRL_PIN(12, "I2C2_SDA"), + PINCTRL_PIN(13, "I2C2_SCL"), + PINCTRL_PIN(14, "I2C3_SDA"), + PINCTRL_PIN(15, "I2C3_SCL"), + PINCTRL_PIN(16, "I2C4_SDA"), + PINCTRL_PIN(17, "I2C4_SCL"), + PINCTRL_PIN(18, "SRCCLKREQB_4"), + PINCTRL_PIN(19, "SRCCLKREQB_5"), + PINCTRL_PIN(20, "M2_SKT2_CFG_0"), + PINCTRL_PIN(21, "M2_SKT2_CFG_1"), + PINCTRL_PIN(22, "M2_SKT2_CFG_2"), + PINCTRL_PIN(23, "M2_SKT2_CFG_3"), + PINCTRL_PIN(24, "DDPB_CTRLCLK"), + PINCTRL_PIN(25, "DDPB_CTRLDATA"), + PINCTRL_PIN(26, "CPU_C10_GATEB"), + PINCTRL_PIN(27, "TIME_SYNC_0"), + PINCTRL_PIN(28, "IMGCLKOUT_1"), + PINCTRL_PIN(29, "IMGCLKOUT_2"), + PINCTRL_PIN(30, "IMGCLKOUT_3"), + PINCTRL_PIN(31, "IMGCLKOUT_4"), + /* GPP_D */ + PINCTRL_PIN(32, "ISH_GP_0"), + PINCTRL_PIN(33, "ISH_GP_1"), + PINCTRL_PIN(34, "ISH_GP_2"), + PINCTRL_PIN(35, "ISH_GP_3"), + PINCTRL_PIN(36, "IMGCLKOUT_0"), + PINCTRL_PIN(37, "SRCCLKREQB_0"), + PINCTRL_PIN(38, "SRCCLKREQB_1"), + PINCTRL_PIN(39, "SRCCLKREQB_2"), + PINCTRL_PIN(40, "SRCCLKREQB_3"), + PINCTRL_PIN(41, "ISH_SPI_CSB"), + PINCTRL_PIN(42, "ISH_SPI_CLK"), + PINCTRL_PIN(43, "ISH_SPI_MISO"), + PINCTRL_PIN(44, "ISH_SPI_MOSI"), + PINCTRL_PIN(45, "ISH_UART0_RXD"), + PINCTRL_PIN(46, "ISH_UART0_TXD"), + PINCTRL_PIN(47, "ISH_UART0_RTSB"), + PINCTRL_PIN(48, "ISH_UART0_CTSB"), + PINCTRL_PIN(49, "ISH_GP_4"), + PINCTRL_PIN(50, "ISH_GP_5"), + PINCTRL_PIN(51, "I2S_MCLK1_OUT"), + PINCTRL_PIN(52, "GSPI2_CLK_LOOPBK"), + /* GPP_U */ + PINCTRL_PIN(53, "UART3_RXD"), + PINCTRL_PIN(54, "UART3_TXD"), + PINCTRL_PIN(55, "UART3_RTSB"), + PINCTRL_PIN(56, "UART3_CTSB"), + PINCTRL_PIN(57, "GSPI3_CS0B"), + PINCTRL_PIN(58, "GSPI3_CLK"), + PINCTRL_PIN(59, "GSPI3_MISO"), + PINCTRL_PIN(60, "GSPI3_MOSI"), + PINCTRL_PIN(61, "GSPI4_CS0B"), + PINCTRL_PIN(62, "GSPI4_CLK"), + PINCTRL_PIN(63, "GSPI4_MISO"), + PINCTRL_PIN(64, "GSPI4_MOSI"), + PINCTRL_PIN(65, "GSPI5_CS0B"), + PINCTRL_PIN(66, "GSPI5_CLK"), + PINCTRL_PIN(67, "GSPI5_MISO"), + PINCTRL_PIN(68, "GSPI5_MOSI"), + PINCTRL_PIN(69, "GSPI6_CS0B"), + PINCTRL_PIN(70, "GSPI6_CLK"), + PINCTRL_PIN(71, "GSPI6_MISO"), + PINCTRL_PIN(72, "GSPI6_MOSI"), + PINCTRL_PIN(73, "GSPI3_CLK_LOOPBK"), + PINCTRL_PIN(74, "GSPI4_CLK_LOOPBK"), + PINCTRL_PIN(75, "GSPI5_CLK_LOOPBK"), + PINCTRL_PIN(76, "GSPI6_CLK_LOOPBK"), + /* vGPIO */ + PINCTRL_PIN(77, "CNV_BTEN"), + PINCTRL_PIN(78, "CNV_BT_HOST_WAKEB"), + PINCTRL_PIN(79, "CNV_BT_IF_SELECT"), + PINCTRL_PIN(80, "vCNV_BT_UART_TXD"), + PINCTRL_PIN(81, "vCNV_BT_UART_RXD"), + PINCTRL_PIN(82, "vCNV_BT_UART_CTS_B"), + PINCTRL_PIN(83, "vCNV_BT_UART_RTS_B"), + PINCTRL_PIN(84, "vCNV_MFUART1_TXD"), + PINCTRL_PIN(85, "vCNV_MFUART1_RXD"), + PINCTRL_PIN(86, "vCNV_MFUART1_CTS_B"), + PINCTRL_PIN(87, "vCNV_MFUART1_RTS_B"), + PINCTRL_PIN(88, "vUART0_TXD"), + PINCTRL_PIN(89, "vUART0_RXD"), + PINCTRL_PIN(90, "vUART0_CTS_B"), + PINCTRL_PIN(91, "vUART0_RTS_B"), + PINCTRL_PIN(92, "vISH_UART0_TXD"), + PINCTRL_PIN(93, "vISH_UART0_RXD"), + PINCTRL_PIN(94, "vISH_UART0_CTS_B"), + PINCTRL_PIN(95, "vISH_UART0_RTS_B"), + PINCTRL_PIN(96, "vCNV_BT_I2S_BCLK"), + PINCTRL_PIN(97, "vCNV_BT_I2S_WS_SYNC"), + PINCTRL_PIN(98, "vCNV_BT_I2S_SDO"), + PINCTRL_PIN(99, "vCNV_BT_I2S_SDI"), + PINCTRL_PIN(100, "vI2S2_SCLK"), + PINCTRL_PIN(101, "vI2S2_SFRM"), + PINCTRL_PIN(102, "vI2S2_TXD"), + PINCTRL_PIN(103, "vI2S2_RXD"), +}; + +static const struct intel_padgroup tgllp_community1_gpps[] = { + TGL_GPP(0, 0, 7), /* GPP_S */ + TGL_GPP(1, 8, 31), /* GPP_H */ + TGL_GPP(2, 32, 52), /* GPP_D */ + TGL_GPP(3, 53, 76), /* GPP_U */ + TGL_GPP(4, 77, 103), /* vGPIO */ +}; + +static const struct intel_community tgllp_community1[] = { + TGL_COMMUNITY(0, 103, tgllp_community1_gpps), +}; + +static const struct intel_pinctrl_soc_data tgllp_community1_soc_data = { + .uid = "1", + .pins = tgllp_community1_pins, + .npins = ARRAY_SIZE(tgllp_community1_pins), + .communities = tgllp_community1, + .ncommunities = ARRAY_SIZE(tgllp_community1), +}; + +static const struct pinctrl_pin_desc tgllp_community4_pins[] = { + /* GPP_C */ + PINCTRL_PIN(0, "SMBCLK"), + PINCTRL_PIN(1, "SMBDATA"), + PINCTRL_PIN(2, "SMBALERTB"), + PINCTRL_PIN(3, "SML0CLK"), + PINCTRL_PIN(4, "SML0DATA"), + PINCTRL_PIN(5, "SML0ALERTB"), + PINCTRL_PIN(6, "SML1CLK"), + PINCTRL_PIN(7, "SML1DATA"), + PINCTRL_PIN(8, "UART0_RXD"), + PINCTRL_PIN(9, "UART0_TXD"), + PINCTRL_PIN(10, "UART0_RTSB"), + PINCTRL_PIN(11, "UART0_CTSB"), + PINCTRL_PIN(12, "UART1_RXD"), + PINCTRL_PIN(13, "UART1_TXD"), + PINCTRL_PIN(14, "UART1_RTSB"), + PINCTRL_PIN(15, "UART1_CTSB"), + PINCTRL_PIN(16, "I2C0_SDA"), + PINCTRL_PIN(17, "I2C0_SCL"), + PINCTRL_PIN(18, "I2C1_SDA"), + PINCTRL_PIN(19, "I2C1_SCL"), + PINCTRL_PIN(20, "UART2_RXD"), + PINCTRL_PIN(21, "UART2_TXD"), + PINCTRL_PIN(22, "UART2_RTSB"), + PINCTRL_PIN(23, "UART2_CTSB"), + /* GPP_F */ + PINCTRL_PIN(24, "CNV_BRI_DT"), + PINCTRL_PIN(25, "CNV_BRI_RSP"), + PINCTRL_PIN(26, "CNV_RGI_DT"), + PINCTRL_PIN(27, "CNV_RGI_RSP"), + PINCTRL_PIN(28, "CNV_RF_RESET_B"), + PINCTRL_PIN(29, "GPPC_F_5"), + PINCTRL_PIN(30, "CNV_PA_BLANKING"), + PINCTRL_PIN(31, "GPPC_F_7"), + PINCTRL_PIN(32, "I2S_MCLK2_INOUT"), + PINCTRL_PIN(33, "BOOTMPC"), + PINCTRL_PIN(34, "GPPC_F_10"), + PINCTRL_PIN(35, "GPPC_F_11"), + PINCTRL_PIN(36, "GSXDOUT"), + PINCTRL_PIN(37, "GSXSLOAD"), + PINCTRL_PIN(38, "GSXDIN"), + PINCTRL_PIN(39, "GSXSRESETB"), + PINCTRL_PIN(40, "GSXCLK"), + PINCTRL_PIN(41, "GMII_MDC"), + PINCTRL_PIN(42, "GMII_MDIO"), + PINCTRL_PIN(43, "SRCCLKREQB_6"), + PINCTRL_PIN(44, "EXT_PWR_GATEB"), + PINCTRL_PIN(45, "EXT_PWR_GATE2B"), + PINCTRL_PIN(46, "VNN_CTRL"), + PINCTRL_PIN(47, "V1P05_CTRL"), + PINCTRL_PIN(48, "GPPF_CLK_LOOPBACK"), + /* HVCMOS */ + PINCTRL_PIN(49, "L_BKLTEN"), + PINCTRL_PIN(50, "L_BKLTCTL"), + PINCTRL_PIN(51, "L_VDDEN"), + PINCTRL_PIN(52, "SYS_PWROK"), + PINCTRL_PIN(53, "SYS_RESETB"), + PINCTRL_PIN(54, "MLK_RSTB"), + /* GPP_E */ + PINCTRL_PIN(55, "SATAXPCIE_0"), + PINCTRL_PIN(56, "SPI1_IO_2"), + PINCTRL_PIN(57, "SPI1_IO_3"), + PINCTRL_PIN(58, "CPU_GP_0"), + PINCTRL_PIN(59, "SATA_DEVSLP_0"), + PINCTRL_PIN(60, "SATA_DEVSLP_1"), + PINCTRL_PIN(61, "GPPC_E_6"), + PINCTRL_PIN(62, "CPU_GP_1"), + PINCTRL_PIN(63, "SPI1_CS1B"), + PINCTRL_PIN(64, "USB2_OCB_0"), + PINCTRL_PIN(65, "SPI1_CSB"), + PINCTRL_PIN(66, "SPI1_CLK"), + PINCTRL_PIN(67, "SPI1_MISO_IO_1"), + PINCTRL_PIN(68, "SPI1_MOSI_IO_0"), + PINCTRL_PIN(69, "DDSP_HPD_A"), + PINCTRL_PIN(70, "ISH_GP_6"), + PINCTRL_PIN(71, "ISH_GP_7"), + PINCTRL_PIN(72, "GPPC_E_17"), + PINCTRL_PIN(73, "DDP1_CTRLCLK"), + PINCTRL_PIN(74, "DDP1_CTRLDATA"), + PINCTRL_PIN(75, "DDP2_CTRLCLK"), + PINCTRL_PIN(76, "DDP2_CTRLDATA"), + PINCTRL_PIN(77, "DDPA_CTRLCLK"), + PINCTRL_PIN(78, "DDPA_CTRLDATA"), + PINCTRL_PIN(79, "SPI1_CLK_LOOPBK"), + /* JTAG */ + PINCTRL_PIN(80, "JTAG_TDO"), + PINCTRL_PIN(81, "JTAGX"), + PINCTRL_PIN(82, "PRDYB"), + PINCTRL_PIN(83, "PREQB"), + PINCTRL_PIN(84, "CPU_TRSTB"), + PINCTRL_PIN(85, "JTAG_TDI"), + PINCTRL_PIN(86, "JTAG_TMS"), + PINCTRL_PIN(87, "JTAG_TCK"), + PINCTRL_PIN(88, "DBG_PMODE"), +}; + +static const struct intel_padgroup tgllp_community4_gpps[] = { + TGL_GPP(0, 0, 23), /* GPP_C */ + TGL_GPP(1, 24, 48), /* GPP_F */ + TGL_GPP(2, 49, 54), /* HVCMOS */ + TGL_GPP(3, 55, 79), /* GPP_E */ + TGL_GPP(4, 80, 88), /* JTAG */ +}; + +static const struct intel_community tgllp_community4[] = { + TGL_COMMUNITY(0, 88, tgllp_community4_gpps), +}; + +static const struct intel_pinctrl_soc_data tgllp_community4_soc_data = { + .uid = "4", + .pins = tgllp_community4_pins, + .npins = ARRAY_SIZE(tgllp_community4_pins), + .communities = tgllp_community4, + .ncommunities = ARRAY_SIZE(tgllp_community4), +}; + +static const struct pinctrl_pin_desc tgllp_community5_pins[] = { + /* GPP_R */ + PINCTRL_PIN(0, "HDA_BCLK"), + PINCTRL_PIN(1, "HDA_SYNC"), + PINCTRL_PIN(2, "HDA_SDO"), + PINCTRL_PIN(3, "HDA_SDI_0"), + PINCTRL_PIN(4, "HDA_RSTB"), + PINCTRL_PIN(5, "HDA_SDI_1"), + PINCTRL_PIN(6, "GPP_R_6"), + PINCTRL_PIN(7, "GPP_R_7"), + /* SPI */ + PINCTRL_PIN(8, "SPI0_IO_2"), + PINCTRL_PIN(9, "SPI0_IO_3"), + PINCTRL_PIN(10, "SPI0_MOSI_IO_0"), + PINCTRL_PIN(11, "SPI0_MISO_IO_1"), + PINCTRL_PIN(12, "SPI0_TPM_CSB"), + PINCTRL_PIN(13, "SPI0_FLASH_0_CSB"), + PINCTRL_PIN(14, "SPI0_FLASH_1_CSB"), + PINCTRL_PIN(15, "SPI0_CLK"), + PINCTRL_PIN(16, "SPI0_CLK_LOOPBK"), +}; + +static const struct intel_padgroup tgllp_community5_gpps[] = { + TGL_GPP(0, 0, 7), /* GPP_R */ + TGL_GPP(1, 8, 16), /* SPI */ +}; + +static const struct intel_community tgllp_community5[] = { + TGL_COMMUNITY(0, 16, tgllp_community5_gpps), +}; + +static const struct intel_pinctrl_soc_data tgllp_community5_soc_data = { + .uid = "5", + .pins = tgllp_community5_pins, + .npins = ARRAY_SIZE(tgllp_community5_pins), + .communities = tgllp_community5, + .ncommunities = ARRAY_SIZE(tgllp_community5), +}; + +static const struct intel_pinctrl_soc_data *tgllp_soc_data_array[] = { + &tgllp_community0_soc_data, + &tgllp_community1_soc_data, + &tgllp_community4_soc_data, + &tgllp_community5_soc_data, + NULL +}; + +static const struct acpi_device_id tgl_pinctrl_acpi_match[] = { + { "INT34C5", (kernel_ulong_t)tgllp_soc_data_array }, + { } +}; +MODULE_DEVICE_TABLE(acpi, tgl_pinctrl_acpi_match); + +static INTEL_PINCTRL_PM_OPS(tgl_pinctrl_pm_ops); + +static struct platform_driver tgl_pinctrl_driver = { + .probe = intel_pinctrl_probe_by_uid, + .driver = { + .name = "tigerlake-pinctrl", + .acpi_match_table = tgl_pinctrl_acpi_match, + .pm = &tgl_pinctrl_pm_ops, + }, +}; + +module_platform_driver(tgl_pinctrl_driver); + +MODULE_AUTHOR("Andy Shevchenko <andriy.shevchenko@linux.intel.com>"); +MODULE_AUTHOR("Mika Westerberg <mika.westerberg@linux.intel.com>"); +MODULE_DESCRIPTION("Intel Tiger Lake PCH pinctrl/GPIO driver"); +MODULE_LICENSE("GPL v2"); |