android/android_kernel_cmhtcleo
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htcleo: some cleanups for backlight driver

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This commit is contained in:
Markinus 2010-10-16 13:07:06 +02:00
parent 1275428c96
commit 28b2881942
1 changed files with 20 additions and 6 deletions
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26
arch/arm/mach-msm/board-htcleo-bl-led.c
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@ -37,10 +37,14 @@
#define LCMDBG(fmt, arg...) {}
#endif
#define HTCLEO_DEFAULT_BACKLIGHT_BRIGHTNESS 255
static int htcleo_backlight_brightness = HTCLEO_DEFAULT_BACKLIGHT_BRIGHTNESS;
static struct led_trigger *htcleo_lcd_backlight;
static int auto_bl_state=0;
static DEFINE_MUTEX(htcleo_backlight_lock);
int htcleo_brightness_autobacklight(uint8_t value)
static int htcleo_brightness_autobacklight(uint8_t value)
{
int ret;
uint8_t data[2];
@ -73,16 +77,18 @@ static ssize_t htcleo_auto_bl_set(struct device *dev,
const char *buf, size_t count)
{
int set_state;
mutex_lock(&htcleo_backlight_lock);
sscanf(buf, "%d", &set_state);
if(set_state!=0 && set_state!=1) return -EINVAL;
htcleo_brightness_autobacklight(set_state);
mutex_unlock(&htcleo_backlight_lock);
return count;
}
static DEVICE_ATTR(auto_bl, 0644, htcleo_auto_bl_get, htcleo_auto_bl_set);
int htcleo_brightness_onoff_bkl(int enable)
static int htcleo_brightness_onoff_bkl(int enable)
{
int ret;
uint8_t data[1];
@ -94,7 +100,7 @@ int htcleo_brightness_onoff_bkl(int enable)
return 0;
}
int htcleo_brightness_set_bkl(uint8_t value)
static int htcleo_brightness_set_bkl(uint8_t value)
{
int ret;
uint8_t cmd[2];
@ -118,9 +124,10 @@ int htcleo_brightness_set_bkl(uint8_t value)
return 0;
}
void htcleo_brightness_set(struct led_classdev *led_cdev, enum led_brightness val)
static void htcleo_brightness_set(struct led_classdev *led_cdev, enum led_brightness val)
{
led_cdev->brightness = val;
mutex_lock(&htcleo_backlight_lock);
htcleo_backlight_brightness = val;
// set brigtness level via MicroP
LCMDBG("htcleo_brightness_set: %d\n", val);
@ -134,13 +141,20 @@ void htcleo_brightness_set(struct led_classdev *led_cdev, enum led_brightness va
htcleo_brightness_onoff_bkl(1);
htcleo_brightness_set_bkl((val - 30) / 23);
}
mutex_unlock(&htcleo_backlight_lock);
}
static enum led_brightness htcleo_brightness_get(struct led_classdev *led_cdev)
{
return htcleo_backlight_brightness;
}
static struct led_classdev htcleo_backlight_led =
{
.name = "lcd-backlight",
.brightness = LED_FULL,
.brightness = HTCLEO_DEFAULT_BACKLIGHT_BRIGHTNESS,
.brightness_set = htcleo_brightness_set,
.brightness_get = htcleo_brightness_get,
};
static int htcleo_backlight_probe(struct platform_device *pdev)