gpio: sch: 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: Chang Rebecca Swee Fun <rebecca.swee.fun.chang@intel.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

diff --git a/drivers/gpio/gpio-sch.c b/drivers/gpio/gpio-sch.c
index a8a333a..5314ee4 100644 (file)
--- a/drivers/gpio/gpio-sch.c
+++ b/drivers/gpio/gpio-sch.c
@@ -41,8 +41,6 @@ struct sch_gpio {
        unsigned short resume_base;
 };
 
-#define to_sch_gpio(gc)        container_of(gc, struct sch_gpio, chip)
-
 static unsigned sch_gpio_offset(struct sch_gpio *sch, unsigned gpio,
                                unsigned reg)
 {
@@ -65,7 +63,7 @@ static unsigned sch_gpio_bit(struct sch_gpio *sch, unsigned gpio)
 
 static int sch_gpio_reg_get(struct gpio_chip *gc, unsigned gpio, unsigned reg)
 {
-       struct sch_gpio *sch = to_sch_gpio(gc);
+       struct sch_gpio *sch = gpiochip_get_data(gc);
        unsigned short offset, bit;
        u8 reg_val;
 
@@ -80,7 +78,7 @@ static int sch_gpio_reg_get(struct gpio_chip *gc, unsigned gpio, unsigned reg)
 static void sch_gpio_reg_set(struct gpio_chip *gc, unsigned gpio, unsigned reg,
                             int val)
 {
-       struct sch_gpio *sch = to_sch_gpio(gc);
+       struct sch_gpio *sch = gpiochip_get_data(gc);
        unsigned short offset, bit;
        u8 reg_val;
 
@@ -97,7 +95,7 @@ static void sch_gpio_reg_set(struct gpio_chip *gc, unsigned gpio, unsigned reg,
 
 static int sch_gpio_direction_in(struct gpio_chip *gc, unsigned gpio_num)
 {
-       struct sch_gpio *sch = to_sch_gpio(gc);
+       struct sch_gpio *sch = gpiochip_get_data(gc);
 
        spin_lock(&sch->lock);
        sch_gpio_reg_set(gc, gpio_num, GIO, 1);
@@ -112,7 +110,7 @@ static int sch_gpio_get(struct gpio_chip *gc, unsigned gpio_num)
 
 static void sch_gpio_set(struct gpio_chip *gc, unsigned gpio_num, int val)
 {
-       struct sch_gpio *sch = to_sch_gpio(gc);
+       struct sch_gpio *sch = gpiochip_get_data(gc);
 
        spin_lock(&sch->lock);
        sch_gpio_reg_set(gc, gpio_num, GLV, val);
@@ -122,7 +120,7 @@ static void sch_gpio_set(struct gpio_chip *gc, unsigned gpio_num, int val)
 static int sch_gpio_direction_out(struct gpio_chip *gc, unsigned gpio_num,
                                  int val)
 {
-       struct sch_gpio *sch = to_sch_gpio(gc);
+       struct sch_gpio *sch = gpiochip_get_data(gc);
 
        spin_lock(&sch->lock);
        sch_gpio_reg_set(gc, gpio_num, GIO, 0);
@@ -217,7 +215,7 @@ static int sch_gpio_probe(struct platform_device *pdev)
 
        platform_set_drvdata(pdev, sch);
 
-       return gpiochip_add(&sch->chip);
+       return gpiochip_add_data(&sch->chip, sch);
 }
 
 static int sch_gpio_remove(struct platform_device *pdev)