diff options
Diffstat (limited to 'ANDROID_3.4.5/arch/arm/plat-samsung/dev-backlight.c')
| -rw-r--r-- | ANDROID_3.4.5/arch/arm/plat-samsung/dev-backlight.c | 152 |
1 files changed, 0 insertions, 152 deletions
diff --git a/ANDROID_3.4.5/arch/arm/plat-samsung/dev-backlight.c b/ANDROID_3.4.5/arch/arm/plat-samsung/dev-backlight.c deleted file mode 100644 index 5f197dca..00000000 --- a/ANDROID_3.4.5/arch/arm/plat-samsung/dev-backlight.c +++ /dev/null @@ -1,152 +0,0 @@ -/* linux/arch/arm/plat-samsung/dev-backlight.c - * - * Copyright (c) 2011 Samsung Electronics Co., Ltd. - * http://www.samsung.com - * - * Common infrastructure for PWM Backlight for Samsung boards - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - */ - -#include <linux/gpio.h> -#include <linux/platform_device.h> -#include <linux/slab.h> -#include <linux/io.h> -#include <linux/pwm_backlight.h> - -#include <plat/devs.h> -#include <plat/gpio-cfg.h> -#include <plat/backlight.h> - -static int samsung_bl_init(struct device *dev) -{ - int ret = 0; - struct platform_device *timer_dev = - container_of(dev->parent, struct platform_device, dev); - struct samsung_bl_gpio_info *bl_gpio_info = - timer_dev->dev.platform_data; - - ret = gpio_request(bl_gpio_info->no, "Backlight"); - if (ret) { - printk(KERN_ERR "failed to request GPIO for LCD Backlight\n"); - return ret; - } - - /* Configure GPIO pin with specific GPIO function for PWM timer */ - s3c_gpio_cfgpin(bl_gpio_info->no, bl_gpio_info->func); - - return 0; -} - -static void samsung_bl_exit(struct device *dev) -{ - struct platform_device *timer_dev = - container_of(dev->parent, struct platform_device, dev); - struct samsung_bl_gpio_info *bl_gpio_info = - timer_dev->dev.platform_data; - - s3c_gpio_cfgpin(bl_gpio_info->no, S3C_GPIO_OUTPUT); - gpio_free(bl_gpio_info->no); -} - -/* Initialize few important fields of platform_pwm_backlight_data - * structure with default values. These fields can be overridden by - * board-specific values sent from machine file. - * For ease of operation, these fields are initialized with values - * used by most samsung boards. - * Users has the option of sending info about other parameters - * for their specific boards - */ - -static struct platform_pwm_backlight_data samsung_dfl_bl_data __initdata = { - .max_brightness = 255, - .dft_brightness = 255, - .pwm_period_ns = 78770, - .init = samsung_bl_init, - .exit = samsung_bl_exit, -}; - -static struct platform_device samsung_dfl_bl_device __initdata = { - .name = "pwm-backlight", -}; - -/* samsung_bl_set - Set board specific data (if any) provided by user for - * PWM Backlight control and register specific PWM and backlight device. - * @gpio_info: structure containing GPIO info for PWM timer - * @bl_data: structure containing Backlight control data - */ -void __init samsung_bl_set(struct samsung_bl_gpio_info *gpio_info, - struct platform_pwm_backlight_data *bl_data) -{ - int ret = 0; - struct platform_device *samsung_bl_device; - struct platform_pwm_backlight_data *samsung_bl_data; - - samsung_bl_device = kmemdup(&samsung_dfl_bl_device, - sizeof(struct platform_device), GFP_KERNEL); - if (!samsung_bl_device) { - printk(KERN_ERR "%s: no memory for platform dev\n", __func__); - return; - } - - samsung_bl_data = s3c_set_platdata(&samsung_dfl_bl_data, - sizeof(struct platform_pwm_backlight_data), samsung_bl_device); - if (!samsung_bl_data) { - printk(KERN_ERR "%s: no memory for platform dev\n", __func__); - goto err_data; - } - - /* Copy board specific data provided by user */ - samsung_bl_data->pwm_id = bl_data->pwm_id; - samsung_bl_device->dev.parent = - &s3c_device_timer[samsung_bl_data->pwm_id].dev; - - if (bl_data->max_brightness) - samsung_bl_data->max_brightness = bl_data->max_brightness; - if (bl_data->dft_brightness) - samsung_bl_data->dft_brightness = bl_data->dft_brightness; - if (bl_data->lth_brightness) - samsung_bl_data->lth_brightness = bl_data->lth_brightness; - if (bl_data->pwm_period_ns) - samsung_bl_data->pwm_period_ns = bl_data->pwm_period_ns; - if (bl_data->init) - samsung_bl_data->init = bl_data->init; - if (bl_data->notify) - samsung_bl_data->notify = bl_data->notify; - if (bl_data->notify_after) - samsung_bl_data->notify_after = bl_data->notify_after; - if (bl_data->exit) - samsung_bl_data->exit = bl_data->exit; - if (bl_data->check_fb) - samsung_bl_data->check_fb = bl_data->check_fb; - - /* Keep the GPIO info for future use */ - s3c_device_timer[samsung_bl_data->pwm_id].dev.platform_data = gpio_info; - - /* Register the specific PWM timer dev for Backlight control */ - ret = platform_device_register( - &s3c_device_timer[samsung_bl_data->pwm_id]); - if (ret) { - printk(KERN_ERR "failed to register pwm timer for backlight: %d\n", ret); - goto err_plat_reg1; - } - - /* Register the Backlight dev */ - ret = platform_device_register(samsung_bl_device); - if (ret) { - printk(KERN_ERR "failed to register backlight device: %d\n", ret); - goto err_plat_reg2; - } - - return; - -err_plat_reg2: - platform_device_unregister(&s3c_device_timer[samsung_bl_data->pwm_id]); -err_plat_reg1: - kfree(samsung_bl_data); -err_data: - kfree(samsung_bl_device); - return; -} |