diff options
author | Linus Walleij <linus.walleij@linaro.org> | 2013-12-09 14:04:37 +0100 |
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committer | Linus Walleij <linus.walleij@linaro.org> | 2013-12-09 14:04:37 +0100 |
commit | bdc54ef45d7670aeb52ce73f8b7ad5f3e5563661 (patch) | |
tree | da6e170ce87891a0242de88d8d7c1ba34faf9bb7 /drivers/gpio | |
parent | 33e0aae11e4854c792e9871f94da6d28bf2e2bb8 (diff) | |
parent | 374b105797c3d4f29c685f3be535c35f5689b30e (diff) | |
download | linux-bdc54ef45d7670aeb52ce73f8b7ad5f3e5563661.tar.gz linux-bdc54ef45d7670aeb52ce73f8b7ad5f3e5563661.tar.bz2 linux-bdc54ef45d7670aeb52ce73f8b7ad5f3e5563661.zip |
Merge tag 'v3.13-rc3' into devel
Linux 3.13-rc3
Diffstat (limited to 'drivers/gpio')
-rw-r--r-- | drivers/gpio/gpio-bcm-kona.c | 2 | ||||
-rw-r--r-- | drivers/gpio/gpio-mpc8xxx.c | 8 | ||||
-rw-r--r-- | drivers/gpio/gpio-msm-v2.c | 2 | ||||
-rw-r--r-- | drivers/gpio/gpio-mvebu.c | 2 | ||||
-rw-r--r-- | drivers/gpio/gpio-pl061.c | 10 | ||||
-rw-r--r-- | drivers/gpio/gpio-rcar.c | 2 | ||||
-rw-r--r-- | drivers/gpio/gpio-tb10x.c | 1 | ||||
-rw-r--r-- | drivers/gpio/gpio-twl4030.c | 13 | ||||
-rw-r--r-- | drivers/gpio/gpio-ucb1400.c | 1 | ||||
-rw-r--r-- | drivers/gpio/gpiolib.c | 78 |
10 files changed, 73 insertions, 46 deletions
diff --git a/drivers/gpio/gpio-bcm-kona.c b/drivers/gpio/gpio-bcm-kona.c index 3437414eaef2..233d088ac59f 100644 --- a/drivers/gpio/gpio-bcm-kona.c +++ b/drivers/gpio/gpio-bcm-kona.c @@ -158,7 +158,7 @@ static int bcm_kona_gpio_get(struct gpio_chip *chip, unsigned gpio) spin_unlock_irqrestore(&kona_gpio->lock, flags); /* return the specified bit status */ - return !!(val & bit); + return !!(val & BIT(bit)); } static int bcm_kona_gpio_direction_input(struct gpio_chip *chip, unsigned gpio) diff --git a/drivers/gpio/gpio-mpc8xxx.c b/drivers/gpio/gpio-mpc8xxx.c index 914e859e3eda..d7d6d72eba33 100644 --- a/drivers/gpio/gpio-mpc8xxx.c +++ b/drivers/gpio/gpio-mpc8xxx.c @@ -70,10 +70,14 @@ static int mpc8572_gpio_get(struct gpio_chip *gc, unsigned int gpio) u32 val; struct of_mm_gpio_chip *mm = to_of_mm_gpio_chip(gc); struct mpc8xxx_gpio_chip *mpc8xxx_gc = to_mpc8xxx_gpio_chip(mm); + u32 out_mask, out_shadow; - val = in_be32(mm->regs + GPIO_DAT) & ~in_be32(mm->regs + GPIO_DIR); + out_mask = in_be32(mm->regs + GPIO_DIR); - return (val | mpc8xxx_gc->data) & mpc8xxx_gpio2mask(gpio); + val = in_be32(mm->regs + GPIO_DAT) & ~out_mask; + out_shadow = mpc8xxx_gc->data & out_mask; + + return (val | out_shadow) & mpc8xxx_gpio2mask(gpio); } static int mpc8xxx_gpio_get(struct gpio_chip *gc, unsigned int gpio) diff --git a/drivers/gpio/gpio-msm-v2.c b/drivers/gpio/gpio-msm-v2.c index f7a0cc4da950..7b37300973db 100644 --- a/drivers/gpio/gpio-msm-v2.c +++ b/drivers/gpio/gpio-msm-v2.c @@ -102,7 +102,7 @@ struct msm_gpio_dev { DECLARE_BITMAP(wake_irqs, MAX_NR_GPIO); DECLARE_BITMAP(dual_edge_irqs, MAX_NR_GPIO); struct irq_domain *domain; - unsigned int summary_irq; + int summary_irq; void __iomem *msm_tlmm_base; }; diff --git a/drivers/gpio/gpio-mvebu.c b/drivers/gpio/gpio-mvebu.c index a8908009803f..bc78a9da5502 100644 --- a/drivers/gpio/gpio-mvebu.c +++ b/drivers/gpio/gpio-mvebu.c @@ -79,7 +79,7 @@ struct mvebu_gpio_chip { spinlock_t lock; void __iomem *membase; void __iomem *percpu_membase; - unsigned int irqbase; + int irqbase; struct irq_domain *domain; int soc_variant; }; diff --git a/drivers/gpio/gpio-pl061.c b/drivers/gpio/gpio-pl061.c index f22f7f3e2e53..b4d42112d02d 100644 --- a/drivers/gpio/gpio-pl061.c +++ b/drivers/gpio/gpio-pl061.c @@ -286,11 +286,6 @@ static int pl061_probe(struct amba_device *adev, const struct amba_id *id) if (!chip->base) return -ENOMEM; - chip->domain = irq_domain_add_simple(adev->dev.of_node, PL061_GPIO_NR, - irq_base, &pl061_domain_ops, chip); - if (!chip->domain) - return -ENODEV; - spin_lock_init(&chip->lock); chip->gc.request = pl061_gpio_request; @@ -320,6 +315,11 @@ static int pl061_probe(struct amba_device *adev, const struct amba_id *id) irq_set_chained_handler(irq, pl061_irq_handler); irq_set_handler_data(irq, chip); + chip->domain = irq_domain_add_simple(adev->dev.of_node, PL061_GPIO_NR, + irq_base, &pl061_domain_ops, chip); + if (!chip->domain) + return -ENODEV; + for (i = 0; i < PL061_GPIO_NR; i++) { if (pdata) { if (pdata->directions & (1 << i)) diff --git a/drivers/gpio/gpio-rcar.c b/drivers/gpio/gpio-rcar.c index 28fa94a316ff..2fdd0191819d 100644 --- a/drivers/gpio/gpio-rcar.c +++ b/drivers/gpio/gpio-rcar.c @@ -421,7 +421,7 @@ static int gpio_rcar_probe(struct platform_device *pdev) if (!p->irq_domain) { ret = -ENXIO; dev_err(&pdev->dev, "cannot initialize irq domain\n"); - goto err1; + goto err0; } if (devm_request_irq(&pdev->dev, irq->start, diff --git a/drivers/gpio/gpio-tb10x.c b/drivers/gpio/gpio-tb10x.c index 66a54ea4f779..3162555ca1cb 100644 --- a/drivers/gpio/gpio-tb10x.c +++ b/drivers/gpio/gpio-tb10x.c @@ -132,6 +132,7 @@ static int tb10x_gpio_direction_out(struct gpio_chip *chip, int mask = BIT(offset); int val = TB10X_GPIO_DIR_OUT << offset; + tb10x_gpio_set(chip, offset, value); tb10x_set_bits(tb10x_gpio, OFFSET_TO_REG_DDR, mask, val); return 0; diff --git a/drivers/gpio/gpio-twl4030.c b/drivers/gpio/gpio-twl4030.c index cd06678a29f7..29f00a76bb92 100644 --- a/drivers/gpio/gpio-twl4030.c +++ b/drivers/gpio/gpio-twl4030.c @@ -354,17 +354,18 @@ static void twl_set(struct gpio_chip *chip, unsigned offset, int value) static int twl_direction_out(struct gpio_chip *chip, unsigned offset, int value) { struct gpio_twl4030_priv *priv = to_gpio_twl4030(chip); + int ret = -EINVAL; mutex_lock(&priv->mutex); if (offset < TWL4030_GPIO_MAX) - twl4030_set_gpio_dataout(offset, value); + ret = twl4030_set_gpio_direction(offset, 0); priv->direction |= BIT(offset); mutex_unlock(&priv->mutex); twl_set(chip, offset, value); - return 0; + return ret; } static int twl_to_irq(struct gpio_chip *chip, unsigned offset) @@ -435,7 +436,8 @@ static int gpio_twl4030_debounce(u32 debounce, u8 mmc_cd) static int gpio_twl4030_remove(struct platform_device *pdev); -static struct twl4030_gpio_platform_data *of_gpio_twl4030(struct device *dev) +static struct twl4030_gpio_platform_data *of_gpio_twl4030(struct device *dev, + struct twl4030_gpio_platform_data *pdata) { struct twl4030_gpio_platform_data *omap_twl_info; @@ -443,6 +445,9 @@ static struct twl4030_gpio_platform_data *of_gpio_twl4030(struct device *dev) if (!omap_twl_info) return NULL; + if (pdata) + *omap_twl_info = *pdata; + omap_twl_info->use_leds = of_property_read_bool(dev->of_node, "ti,use-leds"); @@ -500,7 +505,7 @@ no_irqs: mutex_init(&priv->mutex); if (node) - pdata = of_gpio_twl4030(&pdev->dev); + pdata = of_gpio_twl4030(&pdev->dev, pdata); if (pdata == NULL) { dev_err(&pdev->dev, "Platform data is missing\n"); diff --git a/drivers/gpio/gpio-ucb1400.c b/drivers/gpio/gpio-ucb1400.c index c6a53971387b..2445fe771179 100644 --- a/drivers/gpio/gpio-ucb1400.c +++ b/drivers/gpio/gpio-ucb1400.c @@ -105,3 +105,4 @@ module_platform_driver(ucb1400_gpio_driver); MODULE_DESCRIPTION("Philips UCB1400 GPIO driver"); MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform:ucb1400_gpio"); diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c index 94467ddb3711..44a232701179 100644 --- a/drivers/gpio/gpiolib.c +++ b/drivers/gpio/gpiolib.c @@ -14,6 +14,7 @@ #include <linux/idr.h> #include <linux/slab.h> #include <linux/acpi.h> +#include <linux/gpio/driver.h> #define CREATE_TRACE_POINTS #include <trace/events/gpio.h> @@ -1309,6 +1310,18 @@ struct gpio_chip *gpiochip_find(void *data, } EXPORT_SYMBOL_GPL(gpiochip_find); +static int gpiochip_match_name(struct gpio_chip *chip, void *data) +{ + const char *name = data; + + return !strcmp(chip->label, name); +} + +static struct gpio_chip *find_chip_by_name(const char *name) +{ + return gpiochip_find((void *)name, gpiochip_match_name); +} + #ifdef CONFIG_PINCTRL /** @@ -1342,8 +1355,10 @@ int gpiochip_add_pingroup_range(struct gpio_chip *chip, ret = pinctrl_get_group_pins(pctldev, pin_group, &pin_range->range.pins, &pin_range->range.npins); - if (ret < 0) + if (ret < 0) { + kfree(pin_range); return ret; + } pinctrl_add_gpio_range(pctldev, &pin_range->range); @@ -2261,26 +2276,10 @@ void gpiod_add_table(struct gpiod_lookup *table, size_t size) mutex_unlock(&gpio_lookup_lock); } -/* - * Caller must have a acquired gpio_lookup_lock - */ -static struct gpio_chip *find_chip_by_name(const char *name) -{ - struct gpio_chip *chip = NULL; - - list_for_each_entry(chip, &gpio_lookup_list, list) { - if (chip->label == NULL) - continue; - if (!strcmp(chip->label, name)) - break; - } - - return chip; -} - #ifdef CONFIG_OF static struct gpio_desc *of_find_gpio(struct device *dev, const char *con_id, - unsigned int idx, unsigned long *flags) + unsigned int idx, + enum gpio_lookup_flags *flags) { char prop_name[32]; /* 32 is max size of property name */ enum of_gpio_flags of_flags; @@ -2298,20 +2297,22 @@ static struct gpio_desc *of_find_gpio(struct device *dev, const char *con_id, return desc; if (of_flags & OF_GPIO_ACTIVE_LOW) - *flags |= GPIOF_ACTIVE_LOW; + *flags |= GPIO_ACTIVE_LOW; return desc; } #else static struct gpio_desc *of_find_gpio(struct device *dev, const char *con_id, - unsigned int idx, unsigned long *flags) + unsigned int idx, + enum gpio_lookup_flags *flags) { return ERR_PTR(-ENODEV); } #endif static struct gpio_desc *acpi_find_gpio(struct device *dev, const char *con_id, - unsigned int idx, unsigned long *flags) + unsigned int idx, + enum gpio_lookup_flags *flags) { struct acpi_gpio_info info; struct gpio_desc *desc; @@ -2321,13 +2322,14 @@ static struct gpio_desc *acpi_find_gpio(struct device *dev, const char *con_id, return desc; if (info.gpioint && info.active_low) - *flags |= GPIOF_ACTIVE_LOW; + *flags |= GPIO_ACTIVE_LOW; return desc; } static struct gpio_desc *gpiod_find(struct device *dev, const char *con_id, - unsigned int idx, unsigned long *flags) + unsigned int idx, + enum gpio_lookup_flags *flags) { const char *dev_id = dev ? dev_name(dev) : NULL; struct gpio_desc *desc = ERR_PTR(-ENODEV); @@ -2367,7 +2369,7 @@ static struct gpio_desc *gpiod_find(struct device *dev, const char *con_id, continue; } - if (chip->ngpio >= p->chip_hwnum) { + if (chip->ngpio <= p->chip_hwnum) { dev_warn(dev, "GPIO chip %s has %d GPIOs\n", chip->label, chip->ngpio); continue; @@ -2417,9 +2419,9 @@ struct gpio_desc *__must_check gpiod_get_index(struct device *dev, const char *con_id, unsigned int idx) { - struct gpio_desc *desc; + struct gpio_desc *desc = NULL; int status; - unsigned long flags = 0; + enum gpio_lookup_flags flags = 0; dev_dbg(dev, "GPIO lookup for consumer %s\n", con_id); @@ -2430,13 +2432,23 @@ struct gpio_desc *__must_check gpiod_get_index(struct device *dev, } else if (IS_ENABLED(CONFIG_ACPI) && dev && ACPI_HANDLE(dev)) { dev_dbg(dev, "using ACPI for GPIO lookup\n"); desc = acpi_find_gpio(dev, con_id, idx, &flags); - } else { + } + + /* + * Either we are not using DT or ACPI, or their lookup did not return + * a result. In that case, use platform lookup as a fallback. + */ + if (!desc || IS_ERR(desc)) { + struct gpio_desc *pdesc; dev_dbg(dev, "using lookup tables for GPIO lookup"); - desc = gpiod_find(dev, con_id, idx, &flags); + pdesc = gpiod_find(dev, con_id, idx, &flags); + /* If used as fallback, do not replace the previous error */ + if (!IS_ERR(pdesc) || !desc) + desc = pdesc; } if (IS_ERR(desc)) { - dev_warn(dev, "lookup for GPIO %s failed\n", con_id); + dev_dbg(dev, "lookup for GPIO %s failed\n", con_id); return desc; } @@ -2445,8 +2457,12 @@ struct gpio_desc *__must_check gpiod_get_index(struct device *dev, if (status < 0) return ERR_PTR(status); - if (flags & GPIOF_ACTIVE_LOW) + if (flags & GPIO_ACTIVE_LOW) set_bit(FLAG_ACTIVE_LOW, &desc->flags); + if (flags & GPIO_OPEN_DRAIN) + set_bit(FLAG_OPEN_DRAIN, &desc->flags); + if (flags & GPIO_OPEN_SOURCE) + set_bit(FLAG_OPEN_SOURCE, &desc->flags); return desc; } |