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authorLinus Walleij <linus.walleij@linaro.org>2015-12-07 15:27:49 +0100
committerLinus Walleij <linus.walleij@linaro.org>2016-01-05 11:21:19 +0100
commit17758b0490e6ce100648f80cd611ef360a69432a (patch)
treea09f9a0cbd7b7df53d919077cb28dff815588e39 /drivers/gpio
parent9a3ad668a081163ad5108a6f5d3a7ddaa0390098 (diff)
downloadlinux-17758b0490e6ce100648f80cd611ef360a69432a.tar.bz2
gpio: zx: 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(). Cc: Jun Nie <jun.nie@linaro.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/gpio')
-rw-r--r--drivers/gpio/gpio-zx.c23
1 files changed, 9 insertions, 14 deletions
diff --git a/drivers/gpio/gpio-zx.c b/drivers/gpio/gpio-zx.c
index ab2e54fa46cf..47c79fa65670 100644
--- a/drivers/gpio/gpio-zx.c
+++ b/drivers/gpio/gpio-zx.c
@@ -43,14 +43,9 @@ struct zx_gpio {
struct gpio_chip gc;
};
-static inline struct zx_gpio *to_zx(struct gpio_chip *gc)
-{
- return container_of(gc, struct zx_gpio, gc);
-}
-
static int zx_direction_input(struct gpio_chip *gc, unsigned offset)
{
- struct zx_gpio *chip = to_zx(gc);
+ struct zx_gpio *chip = gpiochip_get_data(gc);
unsigned long flags;
u16 gpiodir;
@@ -69,7 +64,7 @@ static int zx_direction_input(struct gpio_chip *gc, unsigned offset)
static int zx_direction_output(struct gpio_chip *gc, unsigned offset,
int value)
{
- struct zx_gpio *chip = to_zx(gc);
+ struct zx_gpio *chip = gpiochip_get_data(gc);
unsigned long flags;
u16 gpiodir;
@@ -92,14 +87,14 @@ static int zx_direction_output(struct gpio_chip *gc, unsigned offset,
static int zx_get_value(struct gpio_chip *gc, unsigned offset)
{
- struct zx_gpio *chip = to_zx(gc);
+ struct zx_gpio *chip = gpiochip_get_data(gc);
return !!(readw_relaxed(chip->base + ZX_GPIO_DI) & BIT(offset));
}
static void zx_set_value(struct gpio_chip *gc, unsigned offset, int value)
{
- struct zx_gpio *chip = to_zx(gc);
+ struct zx_gpio *chip = gpiochip_get_data(gc);
if (value)
writew_relaxed(BIT(offset), chip->base + ZX_GPIO_DO1);
@@ -110,7 +105,7 @@ static void zx_set_value(struct gpio_chip *gc, unsigned offset, int value)
static int zx_irq_type(struct irq_data *d, unsigned trigger)
{
struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
- struct zx_gpio *chip = to_zx(gc);
+ struct zx_gpio *chip = gpiochip_get_data(gc);
int offset = irqd_to_hwirq(d);
unsigned long flags;
u16 gpiois, gpioi_epos, gpioi_eneg, gpioiev;
@@ -162,7 +157,7 @@ static void zx_irq_handler(struct irq_desc *desc)
unsigned long pending;
int offset;
struct gpio_chip *gc = irq_desc_get_handler_data(desc);
- struct zx_gpio *chip = to_zx(gc);
+ struct zx_gpio *chip = gpiochip_get_data(gc);
struct irq_chip *irqchip = irq_desc_get_chip(desc);
chained_irq_enter(irqchip, desc);
@@ -181,7 +176,7 @@ static void zx_irq_handler(struct irq_desc *desc)
static void zx_irq_mask(struct irq_data *d)
{
struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
- struct zx_gpio *chip = to_zx(gc);
+ struct zx_gpio *chip = gpiochip_get_data(gc);
u16 mask = BIT(irqd_to_hwirq(d) % ZX_GPIO_NR);
u16 gpioie;
@@ -196,7 +191,7 @@ static void zx_irq_mask(struct irq_data *d)
static void zx_irq_unmask(struct irq_data *d)
{
struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
- struct zx_gpio *chip = to_zx(gc);
+ struct zx_gpio *chip = gpiochip_get_data(gc);
u16 mask = BIT(irqd_to_hwirq(d) % ZX_GPIO_NR);
u16 gpioie;
@@ -248,7 +243,7 @@ static int zx_gpio_probe(struct platform_device *pdev)
chip->gc.parent = dev;
chip->gc.owner = THIS_MODULE;
- ret = gpiochip_add(&chip->gc);
+ ret = gpiochip_add_data(&chip->gc, chip);
if (ret)
return ret;