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gpio: lp3943: use gpiochip data pointer

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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: Milo Kim <milo.kim@ti.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Linus Walleij 2015-12-07 09:10:13 +01:00
parent 1f89bccd7f
commit a2f3380465
1 changed files with 7 additions and 12 deletions
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19
drivers/gpio/gpio-lp3943.c
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@ -45,14 +45,9 @@ struct lp3943_gpio {
u16 input_mask; /* 1 = GPIO is input direction, 0 = output */
};
static inline struct lp3943_gpio *to_lp3943_gpio(struct gpio_chip *_chip)
{
return container_of(_chip, struct lp3943_gpio, chip);
}
static int lp3943_gpio_request(struct gpio_chip *chip, unsigned offset)
{
struct lp3943_gpio *lp3943_gpio = to_lp3943_gpio(chip);
struct lp3943_gpio *lp3943_gpio = gpiochip_get_data(chip);
struct lp3943 *lp3943 = lp3943_gpio->lp3943;
/* Return an error if the pin is already assigned */
@ -64,7 +59,7 @@ static int lp3943_gpio_request(struct gpio_chip *chip, unsigned offset)
static void lp3943_gpio_free(struct gpio_chip *chip, unsigned offset)
{
struct lp3943_gpio *lp3943_gpio = to_lp3943_gpio(chip);
struct lp3943_gpio *lp3943_gpio = gpiochip_get_data(chip);
struct lp3943 *lp3943 = lp3943_gpio->lp3943;
clear_bit(offset, &lp3943->pin_used);
@ -82,7 +77,7 @@ static int lp3943_gpio_set_mode(struct lp3943_gpio *lp3943_gpio, u8 offset,
static int lp3943_gpio_direction_input(struct gpio_chip *chip, unsigned offset)
{
struct lp3943_gpio *lp3943_gpio = to_lp3943_gpio(chip);
struct lp3943_gpio *lp3943_gpio = gpiochip_get_data(chip);
lp3943_gpio->input_mask |= BIT(offset);
@ -138,7 +133,7 @@ static int lp3943_get_gpio_out_status(struct lp3943_gpio *lp3943_gpio,
static int lp3943_gpio_get(struct gpio_chip *chip, unsigned offset)
{
struct lp3943_gpio *lp3943_gpio = to_lp3943_gpio(chip);
struct lp3943_gpio *lp3943_gpio = gpiochip_get_data(chip);
/*
* Limitation:
@ -157,7 +152,7 @@ static int lp3943_gpio_get(struct gpio_chip *chip, unsigned offset)
static void lp3943_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
{
struct lp3943_gpio *lp3943_gpio = to_lp3943_gpio(chip);
struct lp3943_gpio *lp3943_gpio = gpiochip_get_data(chip);
u8 data;
if (value)
@ -171,7 +166,7 @@ static void lp3943_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
static int lp3943_gpio_direction_output(struct gpio_chip *chip, unsigned offset,
int value)
{
struct lp3943_gpio *lp3943_gpio = to_lp3943_gpio(chip);
struct lp3943_gpio *lp3943_gpio = gpiochip_get_data(chip);
lp3943_gpio_set(chip, offset, value);
lp3943_gpio->input_mask &= ~BIT(offset);
@ -209,7 +204,7 @@ static int lp3943_gpio_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, lp3943_gpio);
return gpiochip_add(&lp3943_gpio->chip);
return gpiochip_add_data(&lp3943_gpio->chip, lp3943_gpio);
}
static int lp3943_gpio_remove(struct platform_device *pdev)