ARM: pxa: Initialize PWM backlight enable_gpio field

The GPIO API defines 0 as being a valid GPIO number, so this field needs
to be initialized explicitly.

A special case is the Palm Tungsten|C board. Since it doesn't use any
quirks that would require the existing .init() or .exit() hooks it can
simply use the new enable_gpio field.

Signed-off-by: Thierry Reding <treding@nvidia.com>

1 files changed, 1 insertions, 34 deletions

diff --git a/arch/arm/mach-pxa/palmtc.c b/arch/arm/mach-pxa/palmtc.c
index 100b176f7e88..7691c974ca4b 100644
--- a/arch/arm/mach-pxa/palmtc.c
+++ b/arch/arm/mach-pxa/palmtc.c
@@ -166,45 +166,12 @@ static inline void palmtc_keys_init(void) {}
  * Backlight
  ******************************************************************************/
 #if defined(CONFIG_BACKLIGHT_PWM) || defined(CONFIG_BACKLIGHT_PWM_MODULE)
-static int palmtc_backlight_init(struct device *dev)
-{
-        int ret;
-
-        ret = gpio_request(GPIO_NR_PALMTC_BL_POWER, "BL POWER");
-        if (ret)
-                goto err;
-        ret = gpio_direction_output(GPIO_NR_PALMTC_BL_POWER, 1);
-        if (ret)
-                goto err2;
-
-        return 0;
-
-err2:
-        gpio_free(GPIO_NR_PALMTC_BL_POWER);
-err:
-        return ret;
-}
-
-static int palmtc_backlight_notify(struct device *dev, int brightness)
-{
-        /* backlight is on when GPIO16 AF0 is high */
-        gpio_set_value(GPIO_NR_PALMTC_BL_POWER, brightness);
-        return brightness;
-}
-
-static void palmtc_backlight_exit(struct device *dev)
-{
-        gpio_free(GPIO_NR_PALMTC_BL_POWER);
-}
-
 static struct platform_pwm_backlight_data palmtc_backlight_data = {
         .pwm_id         = 1,
         .max_brightness = PALMTC_MAX_INTENSITY,
         .dft_brightness = PALMTC_MAX_INTENSITY,
         .pwm_period_ns  = PALMTC_PERIOD_NS,
-        .init           = palmtc_backlight_init,
-        .notify         = palmtc_backlight_notify,
-        .exit           = palmtc_backlight_exit,
+        .enable_gpio    = GPIO_NR_PALMTC_BL_POWER,
 };
 
 static struct platform_device palmtc_backlight = {