android/android_kernel_cmhtcleo
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htcleo: some cleanups in the keypad led driver

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This commit is contained in:
Markinus 2010-10-16 13:25:23 +02:00
parent 28b2881942
commit e83bba8764
1 changed files with 20 additions and 6 deletions
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26
arch/arm/mach-msm/board-htcleo-keypad.c
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@ -26,8 +26,11 @@
#include "board-htcleo.h"
#define HTCLEO_DEFAULT_KEYPAD_BRIGHTNESS 0
static int htcleo_keypad_brightness = HTCLEO_DEFAULT_KEYPAD_BRIGHTNESS;
static DEFINE_MUTEX(htcleo_keypad_brightness_lock);
struct led_data {
struct led_classdev ldev;
struct mutex led_data_mutex;
struct work_struct brightness_work;
spinlock_t brightness_lock;
@ -169,21 +172,35 @@ static void keypad_led_brightness_set(struct led_classdev *led_cdev,
enum led_brightness brightness)
{
unsigned long flags;
mutex_lock(&htcleo_keypad_brightness_lock);
pr_debug("Setting %s brightness current %d new %d\n",
led_cdev->name, led_cdev->brightness, brightness);
if (brightness > 255)
brightness = 255;
led_cdev->brightness = brightness;
htcleo_keypad_brightness = brightness;
spin_lock_irqsave(&keypad_led_data.brightness_lock, flags);
keypad_led_data.brightness = brightness;
spin_unlock_irqrestore(&keypad_led_data.brightness_lock, flags);
schedule_work(&keypad_led_data.brightness_work);
mutex_unlock(&htcleo_keypad_brightness_lock);
}
static enum led_brightness keypad_led_brightness_get(struct led_classdev *led_cdev)
{
return htcleo_keypad_brightness;
}
static struct led_classdev htcleo_backlight_led =
{
.name = "button-backlight",
.brightness = HTCLEO_DEFAULT_KEYPAD_BRIGHTNESS,
.brightness_set = keypad_led_brightness_set,
.brightness_get = keypad_led_brightness_get,
};
static int __init htcleo_init_keypad(void)
{
@ -214,15 +231,12 @@ static int __init htcleo_init_keypad(void)
goto err_gpio_kpl;
}
keypad_led_data.ldev.name = "button-backlight";
keypad_led_data.ldev.brightness_set = keypad_led_brightness_set;
keypad_led_data.oldval = 0;
mutex_init(&keypad_led_data.led_data_mutex);
INIT_WORK(&keypad_led_data.brightness_work, keypad_led_brightness_set_work);
spin_lock_init(&keypad_led_data.brightness_lock);
ret = led_classdev_register(&htcleo_input_device.dev, &keypad_led_data.ldev);
ret = led_classdev_register(&htcleo_input_device.dev, &htcleo_backlight_led);
if (ret) {
keypad_led_data.ldev.name = NULL;
goto exit;
}