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: Joachim Eastwood <manab...@gmail.com>
Signed-off-by: Linus Walleij <linus.wall...@linaro.org>
---
Joachim: this driver looks very simplistic, it seems it can
be totally replaced with drivers/gpio/gpio-generic.c provided
that some (optional) clock handling is added to the generic GPIO
driver, if you have some time, please look into that.
---
drivers/gpio/gpio-lpc18xx.c | 13 ++++---------
1 file changed, 4 insertions(+), 9 deletions(-)
diff --git a/drivers/gpio/gpio-lpc18xx.c b/drivers/gpio/gpio-lpc18xx.c
index b01fbc9db7cd..98832c9f614a 100644
--- a/drivers/gpio/gpio-lpc18xx.c
+++ b/drivers/gpio/gpio-lpc18xx.c
@@ -31,27 +31,22 @@ struct lpc18xx_gpio_chip {
spinlock_t lock;
};
-static inline struct lpc18xx_gpio_chip *to_lpc18xx_gpio(struct gpio_chip *chip)
-{
- return container_of(chip, struct lpc18xx_gpio_chip, gpio);
-}
-
static void lpc18xx_gpio_set(struct gpio_chip *chip, unsigned offset, int
value)
{
- struct lpc18xx_gpio_chip *gc = to_lpc18xx_gpio(chip);
+ struct lpc18xx_gpio_chip *gc = gpiochip_get_data(chip);
writeb(value ? 1 : 0, gc->base + offset);
}
static int lpc18xx_gpio_get(struct gpio_chip *chip, unsigned offset)
{
- struct lpc18xx_gpio_chip *gc = to_lpc18xx_gpio(chip);
+ struct lpc18xx_gpio_chip *gc = gpiochip_get_data(chip);
return !!readb(gc->base + offset);
}
static int lpc18xx_gpio_direction(struct gpio_chip *chip, unsigned offset,
bool out)
{
- struct lpc18xx_gpio_chip *gc = to_lpc18xx_gpio(chip);
+ struct lpc18xx_gpio_chip *gc = gpiochip_get_data(chip);
unsigned long flags;
u32 port, pin, dir;
@@ -129,7 +124,7 @@ static int lpc18xx_gpio_probe(struct platform_device *pdev)
gc->gpio.parent = &pdev->dev;
- ret = gpiochip_add(&gc->gpio);
+ ret = gpiochip_add_data(&gc->gpio, gc);
if (ret) {
dev_err(&pdev->dev, "failed to add gpio chip\n");
clk_disable_unprepare(gc->clk);
--
2.4.3
--
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