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/*
* leds-msm-pmic.c - MSM PMIC LEDs driver.
*
* Copyright (c) 2009, The Linux Foundation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
* only version 2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/leds.h>
#include <mach/pmic.h>
#define MAX_KEYPAD_BL_LEVEL 16
static void msm_keypad_bl_led_set(struct led_classdev *led_cdev,
enum led_brightness value)
{
int ret;
ret = pmic_set_led_intensity(LED_KEYPAD, value / MAX_KEYPAD_BL_LEVEL);
if (ret)
dev_err(led_cdev->dev, "can't set keypad backlight\n");
}
static struct led_classdev msm_kp_bl_led = {
.name = "keyboard-backlight",
.brightness_set = msm_keypad_bl_led_set,
.brightness = LED_OFF,
};
static int msm_pmic_led_probe(struct platform_device *pdev)
{
int rc;
rc = led_classdev_register(&pdev->dev, &msm_kp_bl_led);
if (rc) {
dev_err(&pdev->dev, "unable to register led class driver\n");
return rc;
}
msm_keypad_bl_led_set(&msm_kp_bl_led, LED_OFF);
return rc;
}
static int msm_pmic_led_remove(struct platform_device *pdev)
{
led_classdev_unregister(&msm_kp_bl_led);
return 0;
}
#ifdef CONFIG_PM
static int msm_pmic_led_suspend(struct platform_device *dev,
pm_message_t state)
{
led_classdev_suspend(&msm_kp_bl_led);
return 0;
}
static int msm_pmic_led_resume(struct platform_device *dev)
{
led_classdev_resume(&msm_kp_bl_led);
return 0;
}
#else
#define msm_pmic_led_suspend NULL
#define msm_pmic_led_resume NULL
#endif
static struct platform_driver msm_pmic_led_driver = {
.probe = msm_pmic_led_probe,
.remove = msm_pmic_led_remove,
.suspend = msm_pmic_led_suspend,
.resume = msm_pmic_led_resume,
.driver = {
.name = "pmic-leds",
.owner = THIS_MODULE,
},
};
static int __init msm_pmic_led_init(void)
{
return platform_driver_register(&msm_pmic_led_driver);
}
module_init(msm_pmic_led_init);
static void __exit msm_pmic_led_exit(void)
{
platform_driver_unregister(&msm_pmic_led_driver);
}
module_exit(msm_pmic_led_exit);
MODULE_DESCRIPTION("MSM PMIC LEDs driver");
MODULE_LICENSE("GPL v2");
MODULE_ALIAS("platform:pmic-leds");
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