lcd: add reliability plan when the screen can't be turned back to unblank mode,update patch 2
Signed-off-by: y00230200 <yanghongliang.yang@huawei.com>
diff --git a/drivers/video/msm/mdss/mdss_fb.c b/drivers/video/msm/mdss/mdss_fb.c
index 0daf3b9..63a4f8e 100755
--- a/drivers/video/msm/mdss/mdss_fb.c
+++ b/drivers/video/msm/mdss/mdss_fb.c
@@ -1017,6 +1017,11 @@
struct mdss_dsi_ctrl_pdata *ctrl_pdata = NULL;
char *rx_buf = NULL;
+ if ((!dev) || (!attr) || (!buf))
+ {
+ pr_err("dev attr buf NULL!\n");
+ return -EINVAL;
+ }
pdata = dev_get_platdata(&mfd->pdev->dev);
if (!pdata) {
pr_err("no panel connected!\n");
@@ -1025,13 +1030,13 @@
pinfo = &pdata->panel_info;
ctrl_pdata = container_of(pdata, struct mdss_dsi_ctrl_pdata,
panel_data);
- rx_buf= kzalloc(2, GFP_KERNEL);
+ 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;;
}
mdss_dsi_panel_cmd_read(ctrl_pdata, 0x0d, 0x00,
- NULL, rx_buf, 1);
+ NULL, rx_buf, 1);//read image mode
ret = scnprintf(buf, PAGE_SIZE, "0x%02x\n",rx_buf[0]);
kfree(rx_buf);
@@ -1048,11 +1053,20 @@
struct mdss_panel_info* pinfo;
struct mdss_dsi_ctrl_pdata* ctrl_pdata = NULL;
struct dcs_cmd_req cmdreq;
- static char cmd[2] = {0x13, 0x00};
+ static char cmd[2] = {0x13, 0x00};//normal mode cmd
static struct dsi_cmd_desc dsi_cmd = {
{DTYPE_DCS_WRITE, 1, 0, 0, 1, sizeof(cmd)},cmd};
+ if ((!dev) || (!attr) || (!buf))
+ {
+ pr_err("dev attr buf 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);
@@ -1079,6 +1093,11 @@
struct mdss_dsi_ctrl_pdata *ctrl_pdata = NULL;
char *rx_buf = NULL;
+ if ((!dev) || (!attr) || (!buf))
+ {
+ pr_err("dev attr buf NULL!\n");
+ return -EINVAL;
+ }
pdata = dev_get_platdata(&mfd->pdev->dev);
if (!pdata) {
pr_err("no panel connected!\n");
@@ -1087,13 +1106,13 @@
pinfo = &pdata->panel_info;
ctrl_pdata = container_of(pdata, struct mdss_dsi_ctrl_pdata,
panel_data);
- rx_buf= kzalloc(2, GFP_KERNEL);
+ 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;;
}
mdss_dsi_panel_cmd_read(ctrl_pdata, 0x0c, 0x00,
- NULL, rx_buf, 1);
+ NULL, rx_buf, 1);//read pixel mode
ret = scnprintf(buf, PAGE_SIZE, "0x%02x\n",rx_buf[0]);
kfree(rx_buf);
@@ -1110,11 +1129,20 @@
struct mdss_panel_info* pinfo;
struct mdss_dsi_ctrl_pdata* ctrl_pdata = NULL;
struct dcs_cmd_req cmdreq;
- static char cmd[2] = {0x22, 0x00};
+ static char cmd[2] = {0x22, 0x00};//all pixel off cmd
static struct dsi_cmd_desc dsi_cmd = {
{DTYPE_DCS_WRITE, 1, 0, 0, 1, sizeof(cmd)},cmd};
+ if ((!dev) || (!attr) || (!buf))
+ {
+ pr_err("dev attr buf 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);
@@ -1141,6 +1169,11 @@
struct mdss_dsi_ctrl_pdata *ctrl_pdata = NULL;
char *rx_buf = NULL;
+ if ((!dev) || (!attr) || (!buf))
+ {
+ pr_err("dev attr buf NULL!\n");
+ return -EINVAL;
+ }
pdata = dev_get_platdata(&mfd->pdev->dev);
if (!pdata) {
pr_err("no panel connected!\n");
@@ -1149,14 +1182,14 @@
pinfo = &pdata->panel_info;
ctrl_pdata = container_of(pdata, struct mdss_dsi_ctrl_pdata,
panel_data);
- rx_buf= kzalloc(2, GFP_KERNEL);
+ 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;;
}
mdss_dsi_panel_cmd_read(ctrl_pdata, 0x0e, 0x00,
NULL, rx_buf, 1);
- ret = scnprintf(buf, PAGE_SIZE, "0x%02x\n",rx_buf[0]);
+ ret = scnprintf(buf, PAGE_SIZE, "0x%02x\n",rx_buf[0]);//read signal mode
kfree(rx_buf);
@@ -1174,6 +1207,11 @@
struct mdss_dsi_ctrl_pdata *ctrl_pdata = NULL;
char *rx_buf = NULL;
+ if ((!dev) || (!attr) || (!buf))
+ {
+ pr_err("dev attr buf NULL!\n");
+ return -EINVAL;
+ }
pdata = dev_get_platdata(&mfd->pdev->dev);
if (!pdata) {
pr_err("no panel connected!\n");
@@ -1182,13 +1220,13 @@
pinfo = &pdata->panel_info;
ctrl_pdata = container_of(pdata, struct mdss_dsi_ctrl_pdata,
panel_data);
- rx_buf= kzalloc(2, GFP_KERNEL);
+ 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;;
}
mdss_dsi_panel_cmd_read(ctrl_pdata, 0x52, 0x00,
- NULL, rx_buf, 1);
+ NULL, rx_buf, 1);//read bright mode
ret = scnprintf(buf, PAGE_SIZE, "0x%02x\n",rx_buf[0]);
kfree(rx_buf);
@@ -1205,11 +1243,20 @@
struct mdss_panel_info* pinfo;
struct mdss_dsi_ctrl_pdata* ctrl_pdata = NULL;
struct dcs_cmd_req cmdreq;
- static char cmd[2] = {0x51, 0xff};
+ static char cmd[2] = {0x51, 0xff};//set brightness to max cmd
static struct dsi_cmd_desc dsi_cmd = {
{DTYPE_DCS_WRITE1, 1, 0, 0, 1, sizeof(cmd)},cmd};
+ if ((!dev) || (!attr) || (!buf))
+ {
+ pr_err("dev attr buf 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);
@@ -1225,7 +1272,6 @@
return count;
}
-
static ssize_t mdss_fb_get_bright_en_mode(struct device *dev,
struct device_attribute *attr, char *buf)
{
@@ -1237,6 +1283,11 @@
struct mdss_dsi_ctrl_pdata *ctrl_pdata = NULL;
char *rx_buf = NULL;
+ if ((!dev) || (!attr) || (!buf))
+ {
+ pr_err("dev attr buf NULL!\n");
+ return -EINVAL;
+ }
pdata = dev_get_platdata(&mfd->pdev->dev);
if (!pdata) {
pr_err("no panel connected!\n");
@@ -1245,13 +1296,13 @@
pinfo = &pdata->panel_info;
ctrl_pdata = container_of(pdata, struct mdss_dsi_ctrl_pdata,
panel_data);
- rx_buf= kzalloc(2, GFP_KERNEL);
+ 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;;
}
mdss_dsi_panel_cmd_read(ctrl_pdata, 0x54, 0x00,
- NULL, rx_buf, 1);
+ NULL, rx_buf, 1);//read bright enable mode
ret = scnprintf(buf, PAGE_SIZE, "0x%02x\n",rx_buf[0]);
kfree(rx_buf);
@@ -2185,13 +2236,25 @@
struct mdss_panel_info* pinfo;
struct mdss_dsi_ctrl_pdata* ctrl_pdata = NULL;
struct dcs_cmd_req cmdreq;
- static char cmd[2] = {0};
+ 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);
@@ -2216,8 +2279,12 @@
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");
@@ -2226,7 +2293,7 @@
pinfo = &pdata->panel_info;
ctrl_pdata = container_of(pdata, struct mdss_dsi_ctrl_pdata, panel_data);
- rx_buf = kzalloc(2, GFP_KERNEL);
+ rx_buf = kzalloc(2, GFP_KERNEL);//malloc 2 bytes buffer
if (!rx_buf)
{
