From 66cf3d5be07a599af417695e4f22f304af667979 Mon Sep 17 00:00:00 2001
From: y00230200 <yanghongliang.yang@huawei.com>
Date: Wed, 18 Oct 2017 18:07:45 +0800
Subject: [PATCH] lcd: revert reliability plan when the screen can't be turned
 back to unblank mode 1.revert read 0x0d register when the panel was set to
 unblank mode,if the mark bit was set to all pixel off,set 0x13 cmd to set
 panel to normal mode.

Change-Id: Ic7a3c86591db57fc6938af59fb2714ac68171924
Signed-off-by: m00389129 <m00389129@notesmail.huawei.com>
---
 drivers/video/msm/mdss/mdss_fb.c | 91 --------------------------------
 1 file changed, 91 deletions(-)

diff --git a/drivers/video/msm/mdss/mdss_fb.c b/drivers/video/msm/mdss/mdss_fb.c
index 4ab2d5223aa6..14ec13485f23 100755
--- a/drivers/video/msm/mdss/mdss_fb.c
+++ b/drivers/video/msm/mdss/mdss_fb.c
@@ -2229,86 +2229,6 @@ static void mdss_panel_validate_debugfs_info(struct msm_fb_data_type *mfd)
 	}
 }
 
-int mdss_set_short_cmd(struct msm_fb_data_type* mfd, char cmd0, char cmd1)
-{
-	int ret = 0;
-	struct mdss_panel_data* pdata;
-	struct mdss_panel_info* pinfo;
-	struct mdss_dsi_ctrl_pdata* ctrl_pdata = NULL;
-	struct dcs_cmd_req cmdreq;
-	static char cmd[2] = {0};//2 bytes cmd size
-	static struct dsi_cmd_desc dsi_cmd = {
-		{DTYPE_DCS_WRITE, 1, 0, 0, 1, sizeof(cmd)},cmd};
-
-	if (!mfd)
-	{
-		pr_err("mfd NULL!\n");
-		return -EINVAL;
-	}
-
-	cmd[0] = cmd0;
-	cmd[1] = cmd1;
-	pdata = dev_get_platdata(&mfd->pdev->dev);
-	if (!pdata)
-	{
-		pr_err("no panel connected!\n");
-		return -EINVAL;
-	}
-
-	pinfo = &pdata->panel_info;
-	ctrl_pdata = container_of(pdata, struct mdss_dsi_ctrl_pdata, panel_data);
-
-	memset(&cmdreq, 0, sizeof(cmdreq));
-	cmdreq.cmds = &dsi_cmd;
-	cmdreq.cmds_cnt = 1;
-	cmdreq.flags = CMD_REQ_COMMIT | CMD_CLK_CTRL;
-	cmdreq.rlen = 0;
-	cmdreq.cb = NULL;
-
-	ret = mdss_dsi_cmdlist_put(ctrl_pdata, &cmdreq);
-
-	return ret;
-}
-EXPORT_SYMBOL(mdss_set_short_cmd);
-
-int mdss_fb_get_register_value(struct msm_fb_data_type* mfd, int reg, int *val)
-{
-	struct mdss_panel_data* pdata;
-	struct mdss_panel_info* pinfo;
-	int ret = 0;
-	struct mdss_dsi_ctrl_pdata* ctrl_pdata = NULL;
-	char* rx_buf = NULL;
-
-	if (!mfd)
-	{
-		pr_err("mfd NULL!\n");
-		return -EINVAL;
-	}
-	pdata = dev_get_platdata(&mfd->pdev->dev);
-	if (!pdata)
-	{
-		pr_err("no panel connected!\n");
-		return -EINVAL;
-	}
-
-	pinfo = &pdata->panel_info;
-	ctrl_pdata = container_of(pdata, struct mdss_dsi_ctrl_pdata, panel_data);
-	rx_buf = kzalloc(2, GFP_KERNEL);//malloc 2 bytes buffer
-
-	if (!rx_buf)
-	{
-		pr_err("not enough memory to hold panel reg dump\n");
-		return -ENOMEM;;
-	}
-
-	ret = mdss_dsi_panel_cmd_read(ctrl_pdata, reg, 0x00, NULL, rx_buf, 1);
-	*val = rx_buf[0];
-
-	kfree(rx_buf);
-
-	return ret;
-}
-EXPORT_SYMBOL(mdss_fb_get_register_value);
 static int mdss_fb_blank_blank(struct msm_fb_data_type *mfd,
 	int req_power_state)
 {
@@ -2370,7 +2290,6 @@ static int mdss_fb_blank_unblank(struct msm_fb_data_type *mfd)
 {
 	int ret = 0;
 	int cur_power_state;
-	int reg_val = 0;
 
 	if (!mfd)
 		return -EINVAL;
@@ -2451,16 +2370,6 @@ static int mdss_fb_blank_unblank(struct msm_fb_data_type *mfd)
 	}
 
 error:
-		/*read 0x0d status reg to check whether the panel has been set to all pixel off, set 0x13 cmd to normal mode*/
-		reg_val = -1;
-		mdss_fb_get_register_value(mfd, 0x0d, &reg_val);
-		if (0x08 == reg_val)
-		{
-			pr_err("read 0x0d error:%d\n",reg_val);
-			mdss_set_short_cmd(mfd, 0x13, 0x00);
-			mdss_fb_get_register_value(mfd, 0x0d, &reg_val);
-			pr_err("read 0x0d after set to normal mode:%d\n",reg_val);
-		}
 	return ret;
 }
 
-- 
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