drivers/video/backlight: remove unused fih_touchkey_led driver

Change-Id: I4e09e37c260988854e9900525b886b93b7f82ee4
Signed-off-by: Tao Huang <huangtao@rock-chips.com>

1 files changed, 0 insertions, 273 deletions

diff --git a/drivers/video/backlight/fih_touchkey_led.c b/drivers/video/backlight/fih_touchkey_led.c
deleted file mode 100644
index 67255ad7544a..000000000000
--- a/drivers/video/backlight/fih_touchkey_led.c
+++ /dev/null
@@ -1,273 +0,0 @@
-/* drivers/video/backlight/rk29_backlight.c
- *
- * Copyright (C) 2009-2011 Rockchip Corporation.
- *
- * This software is licensed under the terms of the GNU General Public
- * License version 2, as published by the Free Software Foundation, and
- * may be copied, distributed, and modified under those terms.
- *
- * 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/init.h>
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/err.h>
-#include <linux/delay.h>
-#include <linux/platform_device.h>
-#include <linux/backlight.h>
-#include <linux/fb.h>
-#include <linux/clk.h>
-
-#include <linux/earlysuspend.h>
-#include <asm/io.h>
-#include <mach/rk29_iomap.h>
-#include <mach/board.h>
-
-#include "rk2818_backlight.h"
-
-/*
- * Debug
- */
-#if 0
-#define DBG(x...)	printk(KERN_INFO x)
-#else
-#define DBG(x...)
-#endif
-
-
-#define write_pwm_reg(id, addr, val)        __raw_writel(val, addr+(RK29_PWM_BASE+id*0x10))
-#define read_pwm_reg(id, addr)              __raw_readl(addr+(RK29_PWM_BASE+id*0x10))    
-
-static struct clk *pwm_clk;
-static struct backlight_device *fih_touchkey_led;
-static int suspend_flag = 0;
-
-static int fih_touchkey_led_update_status(struct backlight_device *bl)
-{
-	u32 divh,div_total;
-	struct rk29_bl_info *fih_touchkey_led_info = bl_get_data(bl);
-	u32 id = fih_touchkey_led_info->pwm_id;
-	u32 ref = fih_touchkey_led_info->bl_ref;
-
-	if (suspend_flag)
-		return 0;
-
-	if (bl->props.brightness < fih_touchkey_led_info->min_brightness)	/*avoid can't view screen when close backlight*/
-		bl->props.brightness = fih_touchkey_led_info->min_brightness;
-
-	div_total = read_pwm_reg(id, PWM_REG_LRC);
-	if (ref) {
-		divh = div_total*(bl->props.brightness)/BL_STEP;
-	} else {
-		divh = div_total*(BL_STEP-bl->props.brightness)/BL_STEP;
-	}
-	write_pwm_reg(id, PWM_REG_HRC, divh);
-
-	DBG(">>>%s-->%d brightness = %d, div_total = %d, divh = %d\n",__FUNCTION__,__LINE__,bl->props.brightness, div_total, divh);
-	return 0;
-}
-
-static int fih_touchkey_led_get_brightness(struct backlight_device *bl)
-{
-	u32 divh,div_total;
-	struct rk29_bl_info *fih_touchkey_led_info = bl_get_data(bl);
-	u32 id = fih_touchkey_led_info->pwm_id;
-	u32 ref = fih_touchkey_led_info->bl_ref;
-
-	div_total = read_pwm_reg(id, PWM_REG_LRC);
-	divh = read_pwm_reg(id, PWM_REG_HRC);
-
-	if (!div_total)
-		return 0;
-
-	if (ref) {
-		return BL_STEP*divh/div_total;
-	} else {
-		return BL_STEP-(BL_STEP*divh/div_total);
-	}
-}
-
-static struct backlight_ops fih_touchkey_led_ops = {
-	.update_status	= fih_touchkey_led_update_status,
-	.get_brightness	= fih_touchkey_led_get_brightness,
-};
-
-static void fih_touchkey_led_work_func(struct work_struct *work)
-{
-	suspend_flag = 0;
-	fih_touchkey_led_update_status(fih_touchkey_led);
-}
-static DECLARE_DELAYED_WORK(fih_touchkey_led_work, fih_touchkey_led_work_func);
-
-#ifdef CONFIG_HAS_EARLYSUSPEND
-static void fih_touchkey_led_suspend(struct early_suspend *h)
-{
-	struct rk29_bl_info *fih_touchkey_led_info = bl_get_data(fih_touchkey_led);
-	int brightness = fih_touchkey_led->props.brightness;
-
-	cancel_delayed_work_sync(&fih_touchkey_led_work);
-
-	if (fih_touchkey_led->props.brightness) {
-		fih_touchkey_led->props.brightness = 0;
-		fih_touchkey_led_update_status(fih_touchkey_led);
-		fih_touchkey_led->props.brightness = brightness;
-	}
-
-	if (!suspend_flag) {
-		clk_disable(pwm_clk);
-		if (fih_touchkey_led_info->pwm_suspend)
-			fih_touchkey_led_info->pwm_suspend();
-	}
-
-	suspend_flag = 1;
-}
-
-static void fih_touchkey_led_resume(struct early_suspend *h)
-{
-	struct rk29_bl_info *fih_touchkey_led_info = bl_get_data(fih_touchkey_led);
-	DBG("%s : %s\n", __FILE__, __FUNCTION__);
-
-	if (fih_touchkey_led_info->pwm_resume)
-		fih_touchkey_led_info->pwm_resume();
-
-	clk_enable(pwm_clk);
-
-	schedule_delayed_work(&fih_touchkey_led_work, msecs_to_jiffies(fih_touchkey_led_info->delay_ms));
-}
-
-static struct early_suspend fih_touchkey_led_early_suspend = {
-	.suspend = fih_touchkey_led_suspend,
-	.resume = fih_touchkey_led_resume,
-	.level = EARLY_SUSPEND_LEVEL_BLANK_SCREEN - 1,
-};
-#endif
-
-static int fih_touchkey_led_probe(struct platform_device *pdev)
-{		
-	int ret = 0;
-	struct rk29_bl_info *fih_touchkey_led_info = pdev->dev.platform_data;
-	u32 id  =  fih_touchkey_led_info->pwm_id;
-	u32 divh, div_total;
-	unsigned long pwm_clk_rate;
-
-	if (fih_touchkey_led) {
-		DBG(KERN_CRIT "%s: fih touchkey led device register has existed \n",
-				__func__);
-		return -EEXIST;		
-	}
-
-	if (!fih_touchkey_led_info->delay_ms)
-		fih_touchkey_led_info->delay_ms = 30;
-
-	if (fih_touchkey_led_info->min_brightness < 0 || fih_touchkey_led_info->min_brightness > BL_STEP)
-		fih_touchkey_led_info->min_brightness = 52;
-
-	if (fih_touchkey_led_info && fih_touchkey_led_info->io_init) {
-		fih_touchkey_led_info->io_init();
-	}
-
-	fih_touchkey_led = backlight_device_register("fih_touchkey_led", &pdev->dev, fih_touchkey_led_info, &fih_touchkey_led_ops);
-	if (!fih_touchkey_led) {
-		DBG(KERN_CRIT "%s: fih touchkey led register error\n",
-				__func__);
-		return -ENODEV;		
-	}
-
-	pwm_clk = clk_get(NULL, "pwm");
-	if (IS_ERR(pwm_clk)) {
-		printk(KERN_ERR "failed to get pwm clock source\n");
-		return -ENODEV;	
-	}
-	pwm_clk_rate = clk_get_rate(pwm_clk);
-	div_total = pwm_clk_rate / PWM_APB_PRE_DIV;
-
-	div_total >>= (1 + (PWM_DIV >> 9));
-	div_total = (div_total) ? div_total : 1;
-
-	if(fih_touchkey_led_info->bl_ref) {
-		divh = 0;
-	} else {
-		divh = div_total;
-	}
-
-	clk_enable(pwm_clk);
-	write_pwm_reg(id, PWM_REG_CTRL, PWM_DIV|PWM_RESET);
-	write_pwm_reg(id, PWM_REG_LRC, div_total);
-	write_pwm_reg(id, PWM_REG_HRC, divh);
-	write_pwm_reg(id, PWM_REG_CNTR, 0x0);
-	write_pwm_reg(id, PWM_REG_CTRL, PWM_DIV|PWM_ENABLE|PWM_TIME_EN);
-
-	fih_touchkey_led->props.power = FB_BLANK_UNBLANK;
-	fih_touchkey_led->props.fb_blank = FB_BLANK_UNBLANK;
-	fih_touchkey_led->props.max_brightness = BL_STEP;
-	fih_touchkey_led->props.brightness = BL_STEP / 2;
-
-	schedule_delayed_work(&fih_touchkey_led_work, msecs_to_jiffies(fih_touchkey_led_info->delay_ms));
-
-	register_early_suspend(&fih_touchkey_led_early_suspend);
-
-	printk("Fih touchkey led Driver Initialized.\n");
-	return ret;
-}
-
-static int fih_touchkey_led_remove(struct platform_device *pdev)
-{		
-	struct rk29_bl_info *rk29_bl_info = pdev->dev.platform_data;
-
-	if (fih_touchkey_led) {
-		backlight_device_unregister(fih_touchkey_led);
-		unregister_early_suspend(&fih_touchkey_led_early_suspend);
-		clk_disable(pwm_clk);
-		clk_put(pwm_clk);
-		if (rk29_bl_info && rk29_bl_info->io_deinit) {
-			rk29_bl_info->io_deinit();
-		}
-		return 0;
-	} else {
-		DBG(KERN_CRIT "%s: no Fih touchkey led device has registered\n",
-				__func__);
-		return -ENODEV;
-	}
-}
-
-static void fih_touchkey_led_shutdown(struct platform_device *pdev)
-{
-	struct rk29_bl_info *fih_touchkey_led_info = pdev->dev.platform_data;
-
-	fih_touchkey_led->props.brightness >>= 1;
-	fih_touchkey_led_update_status(fih_touchkey_led);
-	mdelay(100);
-
-	fih_touchkey_led->props.brightness >>= 1;
-	fih_touchkey_led_update_status(fih_touchkey_led);
-	mdelay(100);
-
-	fih_touchkey_led->props.brightness = 0;
-	fih_touchkey_led_update_status(fih_touchkey_led);
-
-	if (fih_touchkey_led_info && fih_touchkey_led_info->io_deinit)
-		fih_touchkey_led_info->io_deinit();
-}
-
-static struct platform_driver fih_touchkey_led_driver = {
-	.probe	= fih_touchkey_led_probe,
-	.remove = fih_touchkey_led_remove,
-	.driver	= {
-		.name	= "fih_touchkey_led",
-		.owner	= THIS_MODULE,
-	},
-	.shutdown	= fih_touchkey_led_shutdown,
-};
-
-static int __init fih_touchkey_led_init(void)
-{
-	platform_driver_register(&fih_touchkey_led_driver);
-	return 0;
-}
-fs_initcall_sync(fih_touchkey_led_init);
-//late_initcall_sync(fih_touchkey_led_init);