gpio: tc3589x: use gpiochip data pointer

This makes the driver use the data pointer added to the gpio_chip
to store a pointer to the state container instead of relying on
container_of().

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

diff --git a/drivers/gpio/gpio-tc3589x.c b/drivers/gpio/gpio-tc3589x.c
index 2896aef..05a27ec 100644 (file)
--- a/drivers/gpio/gpio-tc3589x.c
+++ b/drivers/gpio/gpio-tc3589x.c
@@ -34,14 +34,9 @@ struct tc3589x_gpio {
        u8 oldregs[CACHE_NR_REGS][CACHE_NR_BANKS];
 };
 
-static inline struct tc3589x_gpio *to_tc3589x_gpio(struct gpio_chip *chip)
-{
-       return container_of(chip, struct tc3589x_gpio, chip);
-}
-
 static int tc3589x_gpio_get(struct gpio_chip *chip, unsigned offset)
 {
-       struct tc3589x_gpio *tc3589x_gpio = to_tc3589x_gpio(chip);
+       struct tc3589x_gpio *tc3589x_gpio = gpiochip_get_data(chip);
        struct tc3589x *tc3589x = tc3589x_gpio->tc3589x;
        u8 reg = TC3589x_GPIODATA0 + (offset / 8) * 2;
        u8 mask = 1 << (offset % 8);
@@ -56,7 +51,7 @@ static int tc3589x_gpio_get(struct gpio_chip *chip, unsigned offset)
 
 static void tc3589x_gpio_set(struct gpio_chip *chip, unsigned offset, int val)
 {
-       struct tc3589x_gpio *tc3589x_gpio = to_tc3589x_gpio(chip);
+       struct tc3589x_gpio *tc3589x_gpio = gpiochip_get_data(chip);
        struct tc3589x *tc3589x = tc3589x_gpio->tc3589x;
        u8 reg = TC3589x_GPIODATA0 + (offset / 8) * 2;
        unsigned pos = offset % 8;
@@ -68,7 +63,7 @@ static void tc3589x_gpio_set(struct gpio_chip *chip, unsigned offset, int val)
 static int tc3589x_gpio_direction_output(struct gpio_chip *chip,
                                         unsigned offset, int val)
 {
-       struct tc3589x_gpio *tc3589x_gpio = to_tc3589x_gpio(chip);
+       struct tc3589x_gpio *tc3589x_gpio = gpiochip_get_data(chip);
        struct tc3589x *tc3589x = tc3589x_gpio->tc3589x;
        u8 reg = TC3589x_GPIODIR0 + offset / 8;
        unsigned pos = offset % 8;
@@ -81,7 +76,7 @@ static int tc3589x_gpio_direction_output(struct gpio_chip *chip,
 static int tc3589x_gpio_direction_input(struct gpio_chip *chip,
                                        unsigned offset)
 {
-       struct tc3589x_gpio *tc3589x_gpio = to_tc3589x_gpio(chip);
+       struct tc3589x_gpio *tc3589x_gpio = gpiochip_get_data(chip);
        struct tc3589x *tc3589x = tc3589x_gpio->tc3589x;
        u8 reg = TC3589x_GPIODIR0 + offset / 8;
        unsigned pos = offset % 8;
@@ -102,7 +97,7 @@ static struct gpio_chip template_chip = {
 static int tc3589x_gpio_irq_set_type(struct irq_data *d, unsigned int type)
 {
        struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
-       struct tc3589x_gpio *tc3589x_gpio = to_tc3589x_gpio(gc);
+       struct tc3589x_gpio *tc3589x_gpio = gpiochip_get_data(gc);
        int offset = d->hwirq;
        int regoffset = offset / 8;
        int mask = 1 << (offset % 8);
@@ -130,7 +125,7 @@ static int tc3589x_gpio_irq_set_type(struct irq_data *d, unsigned int type)
 static void tc3589x_gpio_irq_lock(struct irq_data *d)
 {
        struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
-       struct tc3589x_gpio *tc3589x_gpio = to_tc3589x_gpio(gc);
+       struct tc3589x_gpio *tc3589x_gpio = gpiochip_get_data(gc);
 
        mutex_lock(&tc3589x_gpio->irq_lock);
 }
@@ -138,7 +133,7 @@ static void tc3589x_gpio_irq_lock(struct irq_data *d)
 static void tc3589x_gpio_irq_sync_unlock(struct irq_data *d)
 {
        struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
-       struct tc3589x_gpio *tc3589x_gpio = to_tc3589x_gpio(gc);
+       struct tc3589x_gpio *tc3589x_gpio = gpiochip_get_data(gc);
        struct tc3589x *tc3589x = tc3589x_gpio->tc3589x;
        static const u8 regmap[] = {
                [REG_IBE]       = TC3589x_GPIOIBE0,
@@ -167,7 +162,7 @@ static void tc3589x_gpio_irq_sync_unlock(struct irq_data *d)
 static void tc3589x_gpio_irq_mask(struct irq_data *d)
 {
        struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
-       struct tc3589x_gpio *tc3589x_gpio = to_tc3589x_gpio(gc);
+       struct tc3589x_gpio *tc3589x_gpio = gpiochip_get_data(gc);
        int offset = d->hwirq;
        int regoffset = offset / 8;
        int mask = 1 << (offset % 8);
@@ -178,7 +173,7 @@ static void tc3589x_gpio_irq_mask(struct irq_data *d)
 static void tc3589x_gpio_irq_unmask(struct irq_data *d)
 {
        struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
-       struct tc3589x_gpio *tc3589x_gpio = to_tc3589x_gpio(gc);
+       struct tc3589x_gpio *tc3589x_gpio = gpiochip_get_data(gc);
        int offset = d->hwirq;
        int regoffset = offset / 8;
        int mask = 1 << (offset % 8);
@@ -277,7 +272,7 @@ static int tc3589x_gpio_probe(struct platform_device *pdev)
                return ret;
        }
 
-       ret = gpiochip_add(&tc3589x_gpio->chip);
+       ret = gpiochip_add_data(&tc3589x_gpio->chip, tc3589x_gpio);
        if (ret) {
                dev_err(&pdev->dev, "unable to add gpiochip: %d\n", ret);
                return ret;