From 34829a2338e1585ae957aefb6d18013c8b2d0c97 Mon Sep 17 00:00:00 2001 From: Tao Huang Date: Mon, 5 Nov 2018 15:33:38 +0800 Subject: [PATCH] drivers/video/backlight: remove unused aw9364_bl driver Change-Id: Iaa1b9f28f9cf4fbf94c0239e8e617a227b631bd9 Signed-off-by: Tao Huang --- drivers/video/backlight/aw9364_bl.c | 280 ---------------------------- drivers/video/backlight/aw9364_bl.h | 13 -- 2 files changed, 293 deletions(-) delete mode 100755 drivers/video/backlight/aw9364_bl.c delete mode 100644 drivers/video/backlight/aw9364_bl.h diff --git a/drivers/video/backlight/aw9364_bl.c b/drivers/video/backlight/aw9364_bl.c deleted file mode 100755 index cf3d9b35a76c..000000000000 --- a/drivers/video/backlight/aw9364_bl.c +++ /dev/null @@ -1,280 +0,0 @@ -/* - * Backlight driver for Wolfson Microelectronics WM831x PMICs - * - * Copyright 2009 Wolfson Microelectonics plc - * - * 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 -#include -#include -#include -#include -#include -#include -#ifdef CONFIG_HAS_EARLYSUSPEND -#include -#endif -#include -#include -#include "aw9364_bl.h" - -/* - * Debug - */ -#if 0 -#define DBG(x...) printk(KERN_INFO x) -#else -#define DBG(x...) -#endif - -#define BL_SET 255 -#define BL_INIT_VALUE 102 -struct aw9364_backlight_data { - int pin_en; - int current_brightness; -#ifdef CONFIG_HAS_EARLYSUSPEND - struct early_suspend early_suspend; - struct delayed_work work; - int suspend_flag; - int shutdown_flag; -#endif - - spinlock_t bl_lock; -}; - -#ifdef CONFIG_HAS_EARLYSUSPEND -static struct backlight_device *g_aw9364_bl; -static struct aw9364_backlight_data *g_aw9364_data; -#endif - -static int aw9364_backlight_set(struct backlight_device *bl, int brightness) -{ - struct aw9364_backlight_data *data = bl_get_data(bl); - int i,num_clk, num_clk_to, num_clk_from; - unsigned long flags; - - brightness = brightness & 0xff; //0-256 - - num_clk_from = 16 -(data->current_brightness>>4); - num_clk_to = 16 -(brightness>>4); - num_clk = (16 + num_clk_to - num_clk_from)%16; - - - if(brightness < 16) - { - gpio_direction_output(data->pin_en, GPIO_LOW); - mdelay(3); - } - else { - spin_lock_irqsave(&data->bl_lock, flags); - for(i=0; ipin_en, GPIO_LOW); - gpio_set_value(data->pin_en, GPIO_HIGH); - if(i==0) - udelay(30); - } - spin_unlock_irqrestore(&data->bl_lock, flags); - } - - DBG("%s:current_bl=%d,bl=%d,num_clk_to=%d,num_clk_from=%d,num_clk=%d\n",__FUNCTION__, - data->current_brightness,brightness,num_clk_to,num_clk_from,num_clk); - - if((num_clk) || (brightness < 16)) - data->current_brightness = brightness; - - return 0; - -} - - -static int aw9364_backlight_update_status(struct backlight_device *bl) -{ - - int brightness = bl->props.brightness; - - if(g_aw9364_data->suspend_flag == 1) - brightness = 0; - - if (g_aw9364_data->shutdown_flag == 1) - brightness = 0; - - if (bl->props.power != FB_BLANK_UNBLANK) - brightness = 0; - - if (bl->props.fb_blank != FB_BLANK_UNBLANK) - brightness = 0; - - if (bl->props.state & BL_CORE_SUSPENDED) - brightness = 0; - - DBG("backlight brightness=%d\n", brightness); - - return aw9364_backlight_set(bl, brightness); -} - -static int aw9364_backlight_get_brightness(struct backlight_device *bl) -{ - struct aw9364_backlight_data *data = bl_get_data(bl); - return data->current_brightness; -} - -static struct backlight_ops aw9364_backlight_ops = { - .options = BL_CORE_SUSPENDRESUME, - .update_status = aw9364_backlight_update_status, - .get_brightness = aw9364_backlight_get_brightness, -}; -#ifdef CONFIG_HAS_EARLYSUSPEND -static void aw9364_bl_work(struct work_struct *work) -{ - //struct aw9364_backlight_data *aw9364_data = container_of(work, struct aw9364_backlight_data, - //work.work); - backlight_update_status(g_aw9364_bl); -} - -static void aw9364_bl_suspend(struct early_suspend *h) -{ - struct aw9364_backlight_data *aw9364_data; - aw9364_data = container_of(h, struct aw9364_backlight_data, early_suspend); - aw9364_data->suspend_flag = 1; - - schedule_delayed_work(&aw9364_data->work, msecs_to_jiffies(100)); -} - - -static void aw9364_bl_resume(struct early_suspend *h) -{ - struct aw9364_backlight_data *aw9364_data; - aw9364_data = container_of(h, struct aw9364_backlight_data, early_suspend); - aw9364_data->suspend_flag = 0; - - schedule_delayed_work(&aw9364_data->work, msecs_to_jiffies(100)); - -} - -#endif - - -int rk29_backlight_ctrl(int open) -{ - if(open) - g_aw9364_data->suspend_flag = 0; - else - g_aw9364_data->suspend_flag = 1; - - backlight_update_status(g_aw9364_bl); - return 0; -} - -static int aw9364_backlight_probe(struct platform_device *pdev) -{ - struct aw9364_backlight_data *data; - struct aw9364_platform_data *pdata = pdev->dev.platform_data; - struct backlight_device *bl; - - data = kzalloc(sizeof(*data), GFP_KERNEL); - if (data == NULL) - return -ENOMEM; - - if(pdata && pdata->io_init) - pdata->io_init(); - - data->current_brightness = 0; - data->pin_en = pdata->pin_en; - - - bl = backlight_device_register("wm831x", &pdev->dev, data, - &aw9364_backlight_ops, NULL); - if (IS_ERR(bl)) { - dev_err(&pdev->dev, "failed to register backlight\n"); - kfree(data); - return PTR_ERR(bl); - } - - bl->props.brightness = BL_INIT_VALUE; - bl->props.max_brightness= BL_SET; - - if(data && data->pin_en) - gpio_request(data->pin_en, NULL); - else - return -1; - - spin_lock_init(&data->bl_lock); - - platform_set_drvdata(pdev, bl); - -#ifdef CONFIG_HAS_EARLYSUSPEND - data->early_suspend.level = ~0x0; - data->early_suspend.suspend = aw9364_bl_suspend; - data->early_suspend.resume = aw9364_bl_resume; - register_early_suspend(&data->early_suspend); - INIT_DELAYED_WORK(&data->work, aw9364_bl_work); - g_aw9364_bl = bl; - g_aw9364_data = data; -#endif - - gpio_direction_output(data->pin_en, GPIO_LOW); - mdelay(3); - - backlight_update_status(bl); - schedule_delayed_work(&data->work, msecs_to_jiffies(100)); - - printk("%s\n",__FUNCTION__); - - return 0; -} - -static int aw9364_backlight_remove(struct platform_device *pdev) -{ - struct backlight_device *bl = platform_get_drvdata(pdev); - struct aw9364_backlight_data *data = bl_get_data(bl); - - backlight_device_unregister(bl); -#ifdef CONFIG_HAS_EARLYSUSPEND - unregister_early_suspend(&data->early_suspend); -#endif - kfree(data); - return 0; -} - -static void aw9364_backlight_shutdown(struct platform_device *pdev) -{ - struct backlight_device *bl = platform_get_drvdata(pdev); - struct aw9364_backlight_data *data = bl_get_data(bl); - - printk("%s\n",__FUNCTION__); - data->shutdown_flag = 1; - aw9364_backlight_update_status(bl); - return; -} - -static struct platform_driver aw9364_backlight_driver = { - .driver = { - .name = "aw9364_backlight", - .owner = THIS_MODULE, - }, - .probe = aw9364_backlight_probe, - .remove = aw9364_backlight_remove, - .shutdown = aw9364_backlight_shutdown, -}; - -static int __init aw9364_backlight_init(void) -{ - return platform_driver_register(&aw9364_backlight_driver); -} -module_init(aw9364_backlight_init); - -static void __exit aw9364_backlight_exit(void) -{ - platform_driver_unregister(&aw9364_backlight_driver); -} -module_exit(aw9364_backlight_exit); - -MODULE_DESCRIPTION("Backlight Driver for AW9364"); -MODULE_AUTHOR("luo wei