diff options
| author | Linus Walleij <linus.walleij@linaro.org> | 2015-12-04 15:53:04 +0100 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2016-01-05 11:21:04 +0100 |
| commit | c634fc19fe39f49a00d0e8e922a60ae24b8855b1 (patch) | |
| tree | 0c1bd3c1b21b22d1234eedbe9c35da20ad4711d3 /drivers/gpio/gpio-cs5535.c | |
| parent | gpio: crystalcove: use gpiochip data pointer (diff) | |
| download | linux-c634fc19fe39f49a00d0e8e922a60ae24b8855b1.tar.xz linux-c634fc19fe39f49a00d0e8e922a60ae24b8855b1.zip | |
gpio: cs5535: 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: Fabian Frederick <fabf@skynet.be>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to '')
| -rw-r--r-- | drivers/gpio/gpio-cs5535.c | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/drivers/gpio/gpio-cs5535.c b/drivers/gpio/gpio-cs5535.c index 7b0b198a563d..eccb712e09fb 100644 --- a/drivers/gpio/gpio-cs5535.c +++ b/drivers/gpio/gpio-cs5535.c @@ -42,6 +42,10 @@ static ulong mask = GPIO_DEFAULT_MASK; module_param_named(mask, mask, ulong, 0444); MODULE_PARM_DESC(mask, "GPIO channel mask."); +/* + * FIXME: convert this singleton driver to use the state container + * design pattern, see Documentation/driver-model/design-patterns.txt + */ static struct cs5535_gpio_chip { struct gpio_chip chip; resource_size_t base; @@ -201,8 +205,7 @@ EXPORT_SYMBOL_GPL(cs5535_gpio_setup_event); static int chip_gpio_request(struct gpio_chip *c, unsigned offset) { - struct cs5535_gpio_chip *chip = - container_of(c, struct cs5535_gpio_chip, chip); + struct cs5535_gpio_chip *chip = gpiochip_get_data(c); unsigned long flags; spin_lock_irqsave(&chip->lock, flags); @@ -242,8 +245,7 @@ static void chip_gpio_set(struct gpio_chip *chip, unsigned offset, int val) static int chip_direction_input(struct gpio_chip *c, unsigned offset) { - struct cs5535_gpio_chip *chip = - container_of(c, struct cs5535_gpio_chip, chip); + struct cs5535_gpio_chip *chip = gpiochip_get_data(c); unsigned long flags; spin_lock_irqsave(&chip->lock, flags); @@ -256,8 +258,7 @@ static int chip_direction_input(struct gpio_chip *c, unsigned offset) static int chip_direction_output(struct gpio_chip *c, unsigned offset, int val) { - struct cs5535_gpio_chip *chip = - container_of(c, struct cs5535_gpio_chip, chip); + struct cs5535_gpio_chip *chip = gpiochip_get_data(c); unsigned long flags; spin_lock_irqsave(&chip->lock, flags); @@ -347,7 +348,7 @@ static int cs5535_gpio_probe(struct platform_device *pdev) mask_orig, mask); /* finally, register with the generic GPIO API */ - err = gpiochip_add(&cs5535_gpio_chip.chip); + err = gpiochip_add_data(&cs5535_gpio_chip.chip, &cs5535_gpio_chip); if (err) goto done; |