diff options
| author |   Linus Walleij <linus.walleij@linaro.org> | 2015-01-30 10:56:05 +0100 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2015-02-03 13:35:57 +0100 |
| commit | 37fc8a92daf5e775a18790ccd935240ef72ddd83 (patch) | |
| tree | 3630ae6ba5244199562e515ffab9ec3962c30ef2 /drivers/gpio | |
| parent | gpio: use sizeof() instead of hardcoded values (diff) | |
| download | linux-dev-37fc8a92daf5e775a18790ccd935240ef72ddd83.tar.xz linux-dev-37fc8a92daf5e775a18790ccd935240ef72ddd83.zip | |
gpio: max732x: use an inline function for container cast
Cast the struct gpio_chip into a max732x_chip using an inline
macro and move the assignment to the variable declaration
to save lines and simplify things.
Cc: Semen Protsenko <semen.protsenko@globallogic.com>
Acked-by: Mans Rullgard <mans@mansr.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/gpio')
| -rw-r--r-- | drivers/gpio/gpio-max732x.c | 25 |
1 files changed, 10 insertions, 15 deletions
diff --git a/drivers/gpio/gpio-max732x.c b/drivers/gpio/gpio-max732x.c index 745698d977a5..a095b2393fe9 100644 --- a/drivers/gpio/gpio-max732x.c +++ b/drivers/gpio/gpio-max732x.c @@ -161,6 +161,11 @@ struct max732x_chip { #endif }; +static inline struct max732x_chip *to_max732x(struct gpio_chip *gc) +{ + return container_of(gc, struct max732x_chip, gpio_chip); +} + static int max732x_writeb(struct max732x_chip *chip, int group_a, uint8_t val) { struct i2c_client *client; @@ -199,12 +204,10 @@ static inline int is_group_a(struct max732x_chip *chip, unsigned off) static int max732x_gpio_get_value(struct gpio_chip *gc, unsigned off) { - struct max732x_chip *chip; + struct max732x_chip *chip = to_max732x(gc); uint8_t reg_val; int ret; - chip = container_of(gc, struct max732x_chip, gpio_chip); - ret = max732x_readb(chip, is_group_a(chip, off), ®_val); if (ret < 0) return 0; @@ -215,12 +218,10 @@ static int max732x_gpio_get_value(struct gpio_chip *gc, unsigned off) static void max732x_gpio_set_mask(struct gpio_chip *gc, unsigned off, int mask, int val) { - struct max732x_chip *chip; + struct max732x_chip *chip = to_max732x(gc); uint8_t reg_out; int ret; - chip = container_of(gc, struct max732x_chip, gpio_chip); - mutex_lock(&chip->lock); reg_out = (off > 7) ? chip->reg_out[1] : chip->reg_out[0]; @@ -261,11 +262,9 @@ static void max732x_gpio_set_multiple(struct gpio_chip *gc, static int max732x_gpio_direction_input(struct gpio_chip *gc, unsigned off) { - struct max732x_chip *chip; + struct max732x_chip *chip = to_max732x(gc); unsigned int mask = 1u << off; - chip = container_of(gc, struct max732x_chip, gpio_chip); - if ((mask & chip->dir_input) == 0) { dev_dbg(&chip->client->dev, "%s port %d is output only\n", chip->client->name, off); @@ -285,11 +284,9 @@ static int max732x_gpio_direction_input(struct gpio_chip *gc, unsigned off) static int max732x_gpio_direction_output(struct gpio_chip *gc, unsigned off, int val) { - struct max732x_chip *chip; + struct max732x_chip *chip = to_max732x(gc); unsigned int mask = 1u << off; - chip = container_of(gc, struct max732x_chip, gpio_chip); - if ((mask & chip->dir_output) == 0) { dev_dbg(&chip->client->dev, "%s port %d is input only\n", chip->client->name, off); @@ -361,9 +358,7 @@ static void max732x_irq_update_mask(struct max732x_chip *chip) static int max732x_gpio_to_irq(struct gpio_chip *gc, unsigned off) { - struct max732x_chip *chip; - - chip = container_of(gc, struct max732x_chip, gpio_chip); + struct max732x_chip *chip = to_max732x(gc); if (chip->irq_domain) { return irq_create_mapping(chip->irq_domain, |