diff options
| author | Thierry Reding <treding@nvidia.com> | 2013-08-30 14:15:24 +0400 |
|---|---|---|
| committer | Thierry Reding <thierry.reding@gmail.com> | 2013-10-16 11:05:57 +0400 |
| commit | db01120c5f6cb1d8c6533a49b009f08a73852498 (patch) | |
| tree | 9fb21c5b78ade4d7698d2ebe52e5e6ae44510d14 /arch/arm/mach-pxa/palmtc.c | |
| parent | d46055af1cc4ba413ae0c3b6f1e6066501f943a0 (diff) | |
| download | linux-db01120c5f6cb1d8c6533a49b009f08a73852498.tar.xz | |
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>
Diffstat (limited to 'arch/arm/mach-pxa/palmtc.c')
| -rw-r--r-- | arch/arm/mach-pxa/palmtc.c | 35 |
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 = { |