video: fbdev: via: 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: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Acked-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

diff --git a/drivers/video/fbdev/via/via-gpio.c b/drivers/video/fbdev/via/via-gpio.c
index 3d3544036bc1ce7372a68b10b751e11770e11065..1e89c34340716f1c295d0c925cb09ec378c4d9bb 100644 (file)
--- a/drivers/video/fbdev/via/via-gpio.c
+++ b/drivers/video/fbdev/via/via-gpio.c
@@ -6,7 +6,7 @@
  */
 
 #include <linux/spinlock.h>
-#include <linux/gpio.h>
+#include <linux/gpio/driver.h>
 #include <linux/platform_device.h>
 #include <linux/via-core.h>
 #include <linux/via-gpio.h>
@@ -83,9 +83,7 @@ struct viafb_gpio_cfg {
 static void via_gpio_set(struct gpio_chip *chip, unsigned int nr,
                         int value)
 {
-       struct viafb_gpio_cfg *cfg = container_of(chip,
-                                                 struct viafb_gpio_cfg,
-                                                 gpio_chip);
+       struct viafb_gpio_cfg *cfg = gpiochip_get_data(chip);
        u8 reg;
        struct viafb_gpio *gpio;
        unsigned long flags;
@@ -115,9 +113,7 @@ static int via_gpio_dir_out(struct gpio_chip *chip, unsigned int nr,
  */
 static int via_gpio_dir_input(struct gpio_chip *chip, unsigned int nr)
 {
-       struct viafb_gpio_cfg *cfg = container_of(chip,
-                                                 struct viafb_gpio_cfg,
-                                                 gpio_chip);
+       struct viafb_gpio_cfg *cfg = gpiochip_get_data(chip);
        struct viafb_gpio *gpio;
        unsigned long flags;
 
@@ -131,9 +127,7 @@ static int via_gpio_dir_input(struct gpio_chip *chip, unsigned int nr)
 
 static int via_gpio_get(struct gpio_chip *chip, unsigned int nr)
 {
-       struct viafb_gpio_cfg *cfg = container_of(chip,
-                                                 struct viafb_gpio_cfg,
-                                                 gpio_chip);
+       struct viafb_gpio_cfg *cfg = gpiochip_get_data(chip);
        u8 reg;
        struct viafb_gpio *gpio;
        unsigned long flags;
@@ -255,7 +249,8 @@ static int viafb_gpio_probe(struct platform_device *platdev)
         * Get registered.
         */
        viafb_gpio_config.gpio_chip.base = -1;  /* Dynamic */
-       ret = gpiochip_add(&viafb_gpio_config.gpio_chip);
+       ret = gpiochip_add_data(&viafb_gpio_config.gpio_chip,
+                               &viafb_gpio_config);
        if (ret) {
                printk(KERN_ERR "viafb: failed to add gpios (%d)\n", ret);
                viafb_gpio_config.gpio_chip.ngpio = 0;