diff options
Diffstat (limited to 'ANDROID_3.4.5/drivers/video/backlight/da9052_bl.c')
| -rw-r--r-- | ANDROID_3.4.5/drivers/video/backlight/da9052_bl.c | 187 |
1 files changed, 0 insertions, 187 deletions
diff --git a/ANDROID_3.4.5/drivers/video/backlight/da9052_bl.c b/ANDROID_3.4.5/drivers/video/backlight/da9052_bl.c deleted file mode 100644 index b628d68f..00000000 --- a/ANDROID_3.4.5/drivers/video/backlight/da9052_bl.c +++ /dev/null @@ -1,187 +0,0 @@ -/* - * Backlight Driver for Dialog DA9052 PMICs - * - * Copyright(c) 2012 Dialog Semiconductor Ltd. - * - * Author: David Dajun Chen <dchen@diasemi.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - */ - -#include <linux/backlight.h> -#include <linux/delay.h> -#include <linux/fb.h> -#include <linux/module.h> -#include <linux/platform_device.h> - -#include <linux/mfd/da9052/da9052.h> -#include <linux/mfd/da9052/reg.h> - -#define DA9052_MAX_BRIGHTNESS 0xFF - -enum { - DA9052_WLEDS_OFF, - DA9052_WLEDS_ON, -}; - -enum { - DA9052_TYPE_WLED1, - DA9052_TYPE_WLED2, - DA9052_TYPE_WLED3, -}; - -static unsigned char wled_bank[] = { - DA9052_LED1_CONF_REG, - DA9052_LED2_CONF_REG, - DA9052_LED3_CONF_REG, -}; - -struct da9052_bl { - struct da9052 *da9052; - uint brightness; - uint state; - uint led_reg; -}; - -static int da9052_adjust_wled_brightness(struct da9052_bl *wleds) -{ - unsigned char boost_en; - unsigned char i_sink; - int ret; - - boost_en = 0x3F; - i_sink = 0xFF; - if (wleds->state == DA9052_WLEDS_OFF) { - boost_en = 0x00; - i_sink = 0x00; - } - - ret = da9052_reg_write(wleds->da9052, DA9052_BOOST_REG, boost_en); - if (ret < 0) - return ret; - - ret = da9052_reg_write(wleds->da9052, DA9052_LED_CONT_REG, i_sink); - if (ret < 0) - return ret; - - ret = da9052_reg_write(wleds->da9052, wled_bank[wleds->led_reg], 0x0); - if (ret < 0) - return ret; - - msleep(10); - - if (wleds->brightness) { - ret = da9052_reg_write(wleds->da9052, wled_bank[wleds->led_reg], - wleds->brightness); - if (ret < 0) - return ret; - } - - return 0; -} - -static int da9052_backlight_update_status(struct backlight_device *bl) -{ - int brightness = bl->props.brightness; - struct da9052_bl *wleds = bl_get_data(bl); - - wleds->brightness = brightness; - wleds->state = DA9052_WLEDS_ON; - - return da9052_adjust_wled_brightness(wleds); -} - -static int da9052_backlight_get_brightness(struct backlight_device *bl) -{ - struct da9052_bl *wleds = bl_get_data(bl); - - return wleds->brightness; -} - -static const struct backlight_ops da9052_backlight_ops = { - .update_status = da9052_backlight_update_status, - .get_brightness = da9052_backlight_get_brightness, -}; - -static int da9052_backlight_probe(struct platform_device *pdev) -{ - struct backlight_device *bl; - struct backlight_properties props; - struct da9052_bl *wleds; - - wleds = devm_kzalloc(&pdev->dev, sizeof(struct da9052_bl), GFP_KERNEL); - if (!wleds) - return -ENOMEM; - - wleds->da9052 = dev_get_drvdata(pdev->dev.parent); - wleds->brightness = 0; - wleds->led_reg = platform_get_device_id(pdev)->driver_data; - wleds->state = DA9052_WLEDS_OFF; - - props.type = BACKLIGHT_RAW; - props.max_brightness = DA9052_MAX_BRIGHTNESS; - - bl = backlight_device_register(pdev->name, wleds->da9052->dev, wleds, - &da9052_backlight_ops, &props); - if (IS_ERR(bl)) { - dev_err(&pdev->dev, "Failed to register backlight\n"); - devm_kfree(&pdev->dev, wleds); - return PTR_ERR(bl); - } - - bl->props.max_brightness = DA9052_MAX_BRIGHTNESS; - bl->props.brightness = 0; - platform_set_drvdata(pdev, bl); - - return da9052_adjust_wled_brightness(wleds); -} - -static int da9052_backlight_remove(struct platform_device *pdev) -{ - struct backlight_device *bl = platform_get_drvdata(pdev); - struct da9052_bl *wleds = bl_get_data(bl); - - wleds->brightness = 0; - wleds->state = DA9052_WLEDS_OFF; - da9052_adjust_wled_brightness(wleds); - backlight_device_unregister(bl); - devm_kfree(&pdev->dev, wleds); - - return 0; -} - -static struct platform_device_id da9052_wled_ids[] = { - { - .name = "da9052-wled1", - .driver_data = DA9052_TYPE_WLED1, - }, - { - .name = "da9052-wled2", - .driver_data = DA9052_TYPE_WLED2, - }, - { - .name = "da9052-wled3", - .driver_data = DA9052_TYPE_WLED3, - }, -}; - -static struct platform_driver da9052_wled_driver = { - .probe = da9052_backlight_probe, - .remove = da9052_backlight_remove, - .id_table = da9052_wled_ids, - .driver = { - .name = "da9052-wled", - .owner = THIS_MODULE, - }, -}; - -module_platform_driver(da9052_wled_driver); - -MODULE_AUTHOR("David Dajun Chen <dchen@diasemi.com>"); -MODULE_DESCRIPTION("Backlight driver for DA9052 PMIC"); -MODULE_LICENSE("GPL"); -MODULE_ALIAS("platform:da9052-backlight"); |