gpio: mvebu: 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: Gregory CLEMENT <gregory.clement@free-electrons.com>
Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

diff --git a/drivers/gpio/gpio-mvebu.c b/drivers/gpio/gpio-mvebu.c
index 6acedf4..a5eacc1 100644 (file)
--- a/drivers/gpio/gpio-mvebu.c
+++ b/drivers/gpio/gpio-mvebu.c
@@ -187,8 +187,7 @@ static void __iomem *mvebu_gpioreg_level_mask(struct mvebu_gpio_chip *mvchip)
 
 static void mvebu_gpio_set(struct gpio_chip *chip, unsigned pin, int value)
 {
-       struct mvebu_gpio_chip *mvchip =
-               container_of(chip, struct mvebu_gpio_chip, chip);
+       struct mvebu_gpio_chip *mvchip = gpiochip_get_data(chip);
        unsigned long flags;
        u32 u;
 
@@ -204,8 +203,7 @@ static void mvebu_gpio_set(struct gpio_chip *chip, unsigned pin, int value)
 
 static int mvebu_gpio_get(struct gpio_chip *chip, unsigned pin)
 {
-       struct mvebu_gpio_chip *mvchip =
-               container_of(chip, struct mvebu_gpio_chip, chip);
+       struct mvebu_gpio_chip *mvchip = gpiochip_get_data(chip);
        u32 u;
 
        if (readl_relaxed(mvebu_gpioreg_io_conf(mvchip)) & (1 << pin)) {
@@ -220,8 +218,7 @@ static int mvebu_gpio_get(struct gpio_chip *chip, unsigned pin)
 
 static void mvebu_gpio_blink(struct gpio_chip *chip, unsigned pin, int value)
 {
-       struct mvebu_gpio_chip *mvchip =
-               container_of(chip, struct mvebu_gpio_chip, chip);
+       struct mvebu_gpio_chip *mvchip = gpiochip_get_data(chip);
        unsigned long flags;
        u32 u;
 
@@ -237,8 +234,7 @@ static void mvebu_gpio_blink(struct gpio_chip *chip, unsigned pin, int value)
 
 static int mvebu_gpio_direction_input(struct gpio_chip *chip, unsigned pin)
 {
-       struct mvebu_gpio_chip *mvchip =
-               container_of(chip, struct mvebu_gpio_chip, chip);
+       struct mvebu_gpio_chip *mvchip = gpiochip_get_data(chip);
        unsigned long flags;
        int ret;
        u32 u;
@@ -261,8 +257,7 @@ static int mvebu_gpio_direction_input(struct gpio_chip *chip, unsigned pin)
 static int mvebu_gpio_direction_output(struct gpio_chip *chip, unsigned pin,
                                       int value)
 {
-       struct mvebu_gpio_chip *mvchip =
-               container_of(chip, struct mvebu_gpio_chip, chip);
+       struct mvebu_gpio_chip *mvchip = gpiochip_get_data(chip);
        unsigned long flags;
        int ret;
        u32 u;
@@ -287,8 +282,7 @@ static int mvebu_gpio_direction_output(struct gpio_chip *chip, unsigned pin,
 
 static int mvebu_gpio_to_irq(struct gpio_chip *chip, unsigned pin)
 {
-       struct mvebu_gpio_chip *mvchip =
-               container_of(chip, struct mvebu_gpio_chip, chip);
+       struct mvebu_gpio_chip *mvchip = gpiochip_get_data(chip);
        return irq_create_mapping(mvchip->domain, pin);
 }
 
@@ -494,8 +488,7 @@ static void mvebu_gpio_irq_handler(struct irq_desc *desc)
 
 static void mvebu_gpio_dbg_show(struct seq_file *s, struct gpio_chip *chip)
 {
-       struct mvebu_gpio_chip *mvchip =
-               container_of(chip, struct mvebu_gpio_chip, chip);
+       struct mvebu_gpio_chip *mvchip = gpiochip_get_data(chip);
        u32 out, io_conf, blink, in_pol, data_in, cause, edg_msk, lvl_msk;
        int i;
 
@@ -763,7 +756,7 @@ static int mvebu_gpio_probe(struct platform_device *pdev)
                BUG();
        }
 
-       gpiochip_add(&mvchip->chip);
+       gpiochip_add_data(&mvchip->chip, mvchip);
 
        /* Some gpio controllers do not provide irq support */
        if (!of_irq_count(np))