(CR):[Kane]:[factory]modify the HBM operaton on suspend mode

Bug:(CR)

Change-Id: I286d860ea1cc539ae308783eb9253dac5095f249
Signed-off-by: xingbin <xingbin@huaqin.com>

diff --git a/drivers/video/backlight/lm36923.c b/drivers/video/backlight/lm36923.c
index 0774708c1151a8e63c7705d5e9efe5e971ff0f91..2395472e1b1c79c9e477bba29b081736fcc5b636 100755 (executable)
--- a/drivers/video/backlight/lm36923.c
+++ b/drivers/video/backlight/lm36923.c
@@ -18,6 +18,9 @@
 #include <linux/slab.h>\r
 #include <linux/mutex.h>\r
 #include <linux/interrupt.h>\r
+#ifdef CONFIG_FB\r
+#include <linux/notifier.h>\r
+#endif\r
 #ifdef CONFIG_OF\r
 #include <linux/of_gpio.h>\r
 #endif\r
@@ -85,10 +88,21 @@ static ssize_t lm36923_mode_store(struct device *dev, struct device_attribute *a
         return ret;\r
     }\r
 \r
+    i2c_data->mode = value;\r
+\r
+    if(i2c_data->is_suspend){\r
+        pr_err("device is suspend now, set HBM mode on next power on\n");\r
+        goto exit;\r
+    }\r
+\r
     pr_err("%s: current mode=%d, now write to %d\n", __func__, i2c_data->mode, value);\r
 \r
     if(1 == value){\r
-        mutex_lock(&i2c_data->lock);\r
+        if(mutex_trylock(&i2c_data->lock)==0){\r
+            pr_err("%s: lm36923 dev is busy\n",__func__);\r
+            goto exit;\r
+        }\r
+\r
         ret = backlight_i2c_write_bits(i2c_data,lm_hl_data[0][0],LM_LSB_MASK,lm_hl_data[0][1]);  //write LSB\r
         if(ret < 0){\r
             pr_err("HL mode:write lm chip LSB bit error\n");\r
@@ -102,11 +116,14 @@ static ssize_t lm36923_mode_store(struct device *dev, struct device_attribute *a
             mutex_unlock(&i2c_data->lock);\r
             goto exit;\r
         }\r
-        i2c_data->mode = value;\r
         mutex_unlock(&i2c_data->lock);\r
     }\r
     else if(0 == value){\r
-        mutex_lock(&i2c_data->lock);\r
+        if(mutex_trylock(&i2c_data->lock)==0){\r
+            pr_err("%s: lm36923 dev is busy\n",__func__);\r
+            goto exit;\r
+        }\r
+\r
         ret = backlight_i2c_write_bits(i2c_data,lm_nr_data[0][0],LM_LSB_MASK,lm_nr_data[0][1]);  //write LSB\r
         if(ret < 0){\r
             pr_err("NR mode:write lm chip LSB bit error\n");\r
@@ -120,7 +137,6 @@ static ssize_t lm36923_mode_store(struct device *dev, struct device_attribute *a
             mutex_unlock(&i2c_data->lock);\r
             goto exit;\r
         }\r
-        i2c_data->mode = value;\r
         mutex_unlock(&i2c_data->lock);\r
     }\r
     else{\r
@@ -231,12 +247,101 @@ static int getChipId(struct device *dev){
     return (value&BACKLIGHT_CHIP_ID_REG_MASK)>>4;\r
 }\r
 \r
-\r
+#if defined(CONFIG_FB)\r
+static int lm36923_resume(struct lm36923_data *dev_data)\r
+{\r
+    int ret = 0;\r
+    dev_data->is_suspend = 0;\r
+    if (!dev_data) {\r
+           pr_err("%s: kzalloc error\n",__func__);\r
+           return -ENOMEM;\r
+    }\r
+    pr_info("%s:now write mode to %d\n",__func__,dev_data->mode);\r
+    if(1 == dev_data->mode){\r
+               if(mutex_trylock(&dev_data->lock)==0){\r
+                   pr_err("%s: lm36923 dev is busy\n",__func__);\r
+                   goto exit;\r
+               }\r
+\r
+               ret = backlight_i2c_write_bits(dev_data,lm_hl_data[0][0],LM_LSB_MASK,lm_hl_data[0][1]);  //write LSB\r
+               if(ret < 0){\r
+                   pr_err("HL mode:write sgm chip LSB bit error\n");\r
+                   mutex_unlock(&dev_data->lock);\r
+                   goto exit;\r
+               }\r
+\r
+               ret = backlight_i2c_write(dev_data,lm_hl_data[1][0],lm_hl_data[1][1]); //write MSB\r
+               if(ret < 0){\r
+                   pr_err("HL mode:write sgm chip MSB error\n");\r
+                   mutex_unlock(&dev_data->lock);\r
+                   goto exit;\r
+               }\r
+               mutex_unlock(&dev_data->lock);\r
+    }else if(0 == dev_data->mode){\r
+               if(mutex_trylock(&dev_data->lock)==0){\r
+                   pr_err("%s: lm36923 dev is busy\n",__func__);\r
+                   goto exit;\r
+               }\r
+\r
+               ret = backlight_i2c_write_bits(dev_data,lm_nr_data[0][0],LM_LSB_MASK,lm_nr_data[0][1]);  //write LSB\r
+               if(ret < 0){\r
+                   pr_err("NR mode:write sgm chip LSB bit error\n");\r
+                   mutex_unlock(&dev_data->lock);\r
+                   goto exit;\r
+               }\r
+\r
+               ret = backlight_i2c_write(dev_data,lm_nr_data[1][0],lm_nr_data[1][1]); //write MSB\r
+               if(ret < 0){\r
+                   pr_err("NR mode:write sgm chip MSB error\n");\r
+                   mutex_unlock(&dev_data->lock);\r
+                   goto exit;\r
+               }\r
+               mutex_unlock(&dev_data->lock);\r
+    }\r
+    else{\r
+        pr_err("the error echo value, 0 or 1 is allowed only\n");\r
+    }\r
+exit:\r
+    return ret;\r
+}\r
+static int lm36923_suspend(struct lm36923_data *dev_data)\r
+{\r
+    int ret = 0;\r
+    dev_data->is_suspend = 1;\r
+    return ret;\r
+}\r
+static int fb_notifier_callback(struct notifier_block *self,\r
+                               unsigned long event, void *data)\r
+{\r
+    int *blank;\r
+    struct fb_event *evdata = data;\r
+    struct lm36923_data *lm =\r
+               container_of(self, struct lm36923_data, fb_notif);\r
+\r
+    if (evdata && evdata->data && event == FB_EVENT_BLANK ) {\r
+               blank = evdata->data;\r
+       switch (*blank) {\r
+       case FB_BLANK_UNBLANK:\r
+               lm36923_resume(lm);\r
+               break;\r
+       case FB_BLANK_POWERDOWN:\r
+       case FB_BLANK_HSYNC_SUSPEND:\r
+       case FB_BLANK_VSYNC_SUSPEND:\r
+       case FB_BLANK_NORMAL:\r
+               lm36923_suspend(lm);\r
+               break;\r
+       default:\r
+               break;\r
+       }\r
+    }\r
+    return 0;\r
+}\r
+#endif\r
 static int lm36923_probe(struct i2c_client *client,\r
         const struct i2c_device_id *id)\r
 {\r
     int ret = 0;\r
-    struct lm36923_data *data;\r
+    struct lm36923_data *lm;\r
     struct device_node *np=client->dev.of_node;\r
 \r
     pr_err("%s: enter\n",__func__);\r
@@ -245,21 +350,22 @@ static int lm36923_probe(struct i2c_client *client,
         return -EIO;\r
     }\r
 \r
-    data = devm_kzalloc(&client->dev,sizeof(struct lm36923_data), GFP_KERNEL);\r
-    if (!data) {\r
+    lm = devm_kzalloc(&client->dev,sizeof(struct lm36923_data), GFP_KERNEL);\r
+    if (!lm) {\r
         pr_err("%s: kzalloc error\n",__func__);\r
         return -ENOMEM;\r
     }\r
 \r
-    data->bk_i2c_client = client;\r
-    mutex_init(&data->lock);\r
-    data->mode = 0;\r
+    lm->bk_i2c_client = client;\r
+    mutex_init(&lm->lock);\r
+    lm->mode = 0;\r
+       lm->is_suspend = 0;\r
 \r
-    i2c_set_clientdata(client, data);\r
-    lmdata=data;\r
+    i2c_set_clientdata(client, lm);\r
+    lmdata=lm;\r
 \r
     if (np) {\r
-        ret = lm36923_parse_dt(&client->dev, data, np);\r
+        ret = lm36923_parse_dt(&client->dev, lm, np);\r
         if (ret) {\r
             dev_err(&client->dev,"Unable to parse platfrom data err=%d\n", ret);\r
             goto kfree_exit;\r
@@ -276,18 +382,18 @@ static int lm36923_probe(struct i2c_client *client,
 \r
     if(0==chipid){\r
         printk(KERN_ERR "lm36923 chip\n");\r
-        mutex_lock(&data->lock);\r
-        data->name="lm36923\0";\r
-        ret = backlight_i2c_write_bits(data,lm_nr_data[0][0],LM_LSB_MASK,lm_nr_data[0][1]);\r
+        mutex_lock(&lm->lock);\r
+        lm->name="lm36923\0";\r
+        ret = backlight_i2c_write_bits(lm,lm_nr_data[0][0],LM_LSB_MASK,lm_nr_data[0][1]);\r
         if(ret < 0){\r
             pr_err("%s:NR mode:write lm chip LSB bit error\n",__func__);\r
         }\r
 \r
-        ret = backlight_i2c_write(data,lm_nr_data[1][0],lm_nr_data[1][1]); //write MSB\r
+        ret = backlight_i2c_write(lm,lm_nr_data[1][0],lm_nr_data[1][1]); //write MSB\r
         if(ret < 0){\r
             pr_err("%s:NR mode:write lm chip MSB error\n",__func__);\r
         }\r
-        mutex_unlock(&data->lock);\r
+        mutex_unlock(&lm->lock);\r
     }\r
     else{\r
         dev_err(&client->dev,"wrong chipid\n");\r
@@ -307,22 +413,32 @@ static int lm36923_probe(struct i2c_client *client,
         dev_err(&bd->dev,"Unable to create backlight_i2c_attribute\n");\r
         goto kfree_sysfs;\r
     }\r
+#if defined(CONFIG_FB)\r
+    lm->fb_notif.notifier_call = fb_notifier_callback;\r
+    ret = fb_register_client(&lm->fb_notif);\r
+    if (ret) {\r
+               pr_err("Unable to register fb_notifier: %d\n", ret);\r
+               goto err_register_fb_notif_failed;\r
+    }\r
+#endif\r
     return 0;\r
-\r
+#if defined(CONFIG_FB)\r
+err_register_fb_notif_failed:\r
+#endif\r
 kfree_sysfs:\r
     sysfs_remove_group(&bd->dev.kobj, &lm36923_attribute_group);\r
 kfree_node:\r
     backlight_device_unregister(bd);\r
 kfree_exit:\r
-    mutex_destroy(&data->lock);\r
+    mutex_destroy(&lm->lock);\r
     return ret;\r
 }\r
 \r
 static int lm36923_remove(struct i2c_client *client)\r
 {\r
-    struct lm36923_data *data = lmdata;\r
+    struct lm36923_data *lm = lmdata;\r
     if(lmdata != NULL)\r
-        mutex_destroy(&data->lock);\r
+        mutex_destroy(&lm->lock);\r
     sysfs_remove_group(&bd->dev.kobj, &lm36923_attribute_group);\r
     backlight_device_unregister(bd);\r
     return 0;\r
@@ -376,4 +492,4 @@ MODULE_DESCRIPTION("LCD_BACKLIGHT davicom ic driver");
 MODULE_LICENSE("GPL");\r
 \r
 module_init(lm36923_init);\r
-module_exit(lm36923_exit);
\ No newline at end of file
+module_exit(lm36923_exit);\r

diff --git a/drivers/video/backlight/lm36923.h b/drivers/video/backlight/lm36923.h
index 1f0905c7c8ee0a28e1b043e9743955b8c41d8238..55f24cc334a0fcc05665617606de68efcf6340fd 100755 (executable)
--- a/drivers/video/backlight/lm36923.h
+++ b/drivers/video/backlight/lm36923.h
@@ -49,6 +49,10 @@ struct lm36923_data {
        struct mutex lock;\r
        unsigned char mode;\r
        char* name;\r
+#if defined(CONFIG_FB)\r
+       struct notifier_block fb_notif;\r
+#endif\r
+       unsigned char is_suspend;\r
 };\r
 \r
 //lm 36923\r

diff --git a/drivers/video/backlight/sgm37603a.c b/drivers/video/backlight/sgm37603a.c
index 36d1d53b46f62f4ea374467b1246d6e656ba1809..063b6578c085776639da4d8ea38d85b69ecb6c3a 100755 (executable)
--- a/drivers/video/backlight/sgm37603a.c
+++ b/drivers/video/backlight/sgm37603a.c
@@ -18,6 +18,9 @@
 #include <linux/slab.h>\r
 #include <linux/mutex.h>\r
 #include <linux/interrupt.h>\r
+#if defined(CONFIG_FB)\r
+#include <linux/notifier.h>\r
+#endif\r
 #ifdef CONFIG_OF\r
 #include <linux/of_gpio.h>\r
 #endif\r
@@ -86,10 +89,21 @@ static ssize_t sgm37603a_mode_store(struct device *dev, struct device_attribute
         return ret;\r
     }\r
 \r
+    i2c_data->mode = value;\r
+\r
+    if(i2c_data->is_suspend){\r
+        pr_err("device is suspend now, set HBM mode on next power on\n");\r
+        goto exit;\r
+    }\r
+\r
     pr_err("%s: current mode=%d, now write to %d\n", __func__, i2c_data->mode, value);\r
 \r
     if(1 == value){\r
-        mutex_lock(&i2c_data->lock);\r
+        if(mutex_trylock(&i2c_data->lock)==0){\r
+            pr_err("%s: sgm37603a dev is busy\n",__func__);\r
+            goto exit;\r
+        }\r
+\r
         ret = backlight_i2c_write_bits(i2c_data,sgm_hl_data[0][0],SGM_LSB_MASK,sgm_hl_data[0][1]);  //write LSB\r
         if(ret < 0){\r
             pr_err("HL mode:write sgm chip LSB bit error\n");\r
@@ -103,11 +117,14 @@ static ssize_t sgm37603a_mode_store(struct device *dev, struct device_attribute
             mutex_unlock(&i2c_data->lock);\r
             goto exit;\r
         }\r
-        i2c_data->mode = value;\r
         mutex_unlock(&i2c_data->lock);\r
     }\r
     else if(0 == value){\r
-        mutex_lock(&i2c_data->lock);\r
+        if(mutex_trylock(&i2c_data->lock)==0){\r
+            pr_err("%s: sgm37603a dev is busy\n",__func__);\r
+            goto exit;\r
+        }\r
+\r
         ret = backlight_i2c_write_bits(i2c_data,sgm_nr_data[0][0],SGM_LSB_MASK,sgm_nr_data[0][1]);  //write LSB\r
         if(ret < 0){\r
             pr_err("NR mode:write sgm chip LSB bit error\n");\r
@@ -121,7 +138,6 @@ static ssize_t sgm37603a_mode_store(struct device *dev, struct device_attribute
             mutex_unlock(&i2c_data->lock);\r
             goto exit;\r
         }\r
-        i2c_data->mode = value;\r
         mutex_unlock(&i2c_data->lock);\r
     }\r
     else{\r
@@ -158,8 +174,8 @@ static ssize_t sgm37603a_chip_reg_store(struct device *dev,
     int ret = -1;\r
     unsigned char reg;\r
     unsigned char val;\r
-    struct sgm37603a_data *i2c_data = sgmdata;\r
-    \r
+    struct sgm37603a_data *i2c_data = sgmdata;\r\r
+\r
     if(!count || i2c_data==NULL){\r
         pr_err("%s:count=0 or i2c_data is NULL pointer\n",__func__);\r
         return -EINVAL;\r
@@ -233,12 +249,104 @@ static int getChipId(struct device *dev){
     return (value&BACKLIGHT_CHIP_ID_REG_MASK)>>4;\r
 }\r
 \r
+#if defined(CONFIG_FB)\r
+static int sgm37603a_resume(struct sgm37603a_data *dev_data)\r
+{\r
+    int ret = 0;\r
+\r
+    dev_data->is_suspend = 0;\r
+    if (!dev_data) {\r
+           pr_err("%s: kzalloc error\n",__func__);\r
+           return -ENOMEM;\r
+    }\r
 \r
+    pr_info("%s:now write mode to %d\n",__func__,dev_data->mode);\r
+    if(1 == dev_data->mode){\r
+               if(mutex_trylock(&dev_data->lock)==0){\r
+                   pr_err("%s: sgm37603a dev is busy\n",__func__);\r
+                   goto exit;\r
+               }\r
+\r
+               ret = backlight_i2c_write_bits(dev_data,sgm_hl_data[0][0],SGM_LSB_MASK,sgm_hl_data[0][1]);  //write LSB\r
+               if(ret < 0){\r
+                   pr_err("HL mode:write sgm chip LSB bit error\n");\r
+                   mutex_unlock(&dev_data->lock);\r
+                   goto exit;\r
+               }\r
+\r
+               ret = backlight_i2c_write(dev_data,sgm_hl_data[1][0],sgm_hl_data[1][1]); //write MSB\r
+               if(ret < 0){\r
+                   pr_err("HL mode:write sgm chip MSB error\n");\r
+                   mutex_unlock(&dev_data->lock);\r
+                   goto exit;\r
+               }\r
+               mutex_unlock(&dev_data->lock);\r
+    }else if(0 == dev_data->mode){\r
+               if(mutex_trylock(&dev_data->lock)==0){\r
+                   pr_err("%s: sgm37603a dev is busy\n",__func__);\r
+                   goto exit;\r
+               }\r
+\r
+               ret = backlight_i2c_write_bits(dev_data,sgm_nr_data[0][0],SGM_LSB_MASK,sgm_nr_data[0][1]);  //write LSB\r
+               if(ret < 0){\r
+                   pr_err("NR mode:write sgm chip LSB bit error\n");\r
+                   mutex_unlock(&dev_data->lock);\r
+                   goto exit;\r
+               }\r
+\r
+               ret = backlight_i2c_write(dev_data,sgm_nr_data[1][0],sgm_nr_data[1][1]); //write MSB\r
+               if(ret < 0){\r
+                   pr_err("NR mode:write sgm chip MSB error\n");\r
+                   mutex_unlock(&dev_data->lock);\r
+                   goto exit;\r
+               }\r
+               mutex_unlock(&dev_data->lock);\r
+    }\r
+    else{\r
+        pr_err("the error echo value, 0 or 1 is allowed only\n");\r
+    }\r
+exit:\r
+    return ret;\r
+}
+static int sgm37603a_suspend(struct sgm37603a_data *dev_data)\r
+{\r
+    int ret = 0;\r
+    dev_data->is_suspend = 1;\r
+    return ret;\r
+}\r
+\r
+static int fb_notifier_callback(struct notifier_block *self,
+                               unsigned long event, void *data)
+{
+    int *blank;\r
+    struct fb_event *evdata = data;\r
+    struct sgm37603a_data *sgm =\r
+               container_of(self, struct sgm37603a_data, fb_notif);\r
+\r
+    if (evdata && evdata->data && event == FB_EVENT_BLANK ) {\r
+               blank = evdata->data;\r
+               switch (*blank) {\r
+               case FB_BLANK_UNBLANK:\r
+                       sgm37603a_resume(sgm);\r
+                       break;\r
+               case FB_BLANK_POWERDOWN:\r
+               case FB_BLANK_HSYNC_SUSPEND:\r
+               case FB_BLANK_VSYNC_SUSPEND:\r
+               case FB_BLANK_NORMAL:\r
+                       sgm37603a_suspend(sgm);\r
+                       break;\r
+               default:\r
+                       break;\r
+               }\r
+    }\r
+    return 0;\r
+}
+#endif\r
 static int sgm37603a_probe(struct i2c_client *client,\r
         const struct i2c_device_id *id)\r
 {\r
     int ret = 0;\r
-    struct sgm37603a_data *data;\r
+    struct sgm37603a_data *sgm;\r
     struct device_node *np=client->dev.of_node;\r
 \r
     pr_err("%s: enter\n",__func__);\r
@@ -248,20 +356,21 @@ static int sgm37603a_probe(struct i2c_client *client,
         return -EIO;\r
     }\r
 \r
-    data = devm_kzalloc(&client->dev,sizeof(struct sgm37603a_data), GFP_KERNEL);\r
-    if (!data) {\r
+    sgm = devm_kzalloc(&client->dev,sizeof(struct sgm37603a_data), GFP_KERNEL);\r
+    if (!sgm) {\r
         pr_err("%s: kzalloc error\n",__func__);\r
         return -ENOMEM;\r
     }\r
 \r
-    data->bk_i2c_client = client;\r
-    mutex_init(&data->lock);\r
-    data->mode = 0;\r
-    i2c_set_clientdata(client, data);\r
-    sgmdata=data;\r
+    sgm->bk_i2c_client = client;\r
+    mutex_init(&sgm->lock);\r
+    sgm->mode = 0;\r
+       sgm->is_suspend = 0;\r
+    i2c_set_clientdata(client, sgm);\r
+    sgmdata=sgm;\r
 \r
     if (np) {\r
-        ret = sgm37603a_parse_dt(&client->dev, data, np);\r
+        ret = sgm37603a_parse_dt(&client->dev, sgm, np);\r
         if (ret) {\r
             dev_err(&client->dev,"Unable to parse platfrom data err=%d\n", ret);\r
             goto kfree_exit;\r
@@ -277,18 +386,18 @@ static int sgm37603a_probe(struct i2c_client *client,
 \r
     if(1==chipid){\r
         printk(KERN_ERR "sgm37603 chip\n");\r
-        mutex_lock(&data->lock);\r
-        data->name="sgm37603\0";\r
-        ret = backlight_i2c_write_bits(data,sgm_nr_data[0][0],SGM_LSB_MASK,sgm_nr_data[0][1]);\r
+        mutex_lock(&sgm->lock);\r
+        sgm->name="sgm37603\0";\r
+        ret = backlight_i2c_write_bits(sgm,sgm_nr_data[0][0],SGM_LSB_MASK,sgm_nr_data[0][1]);\r
         if(ret < 0){\r
             pr_err("%s:NR mode:write sgm chip LSB bit error\n",__func__);\r
         }\r
         //backlight_i2c_write(data,sgm_nr_data[0][0],sgm_nr_data[0][1]); //write LSB\r
-        ret = backlight_i2c_write(data,sgm_nr_data[1][0],sgm_nr_data[1][1]); //write MSB\r
+        ret = backlight_i2c_write(sgm,sgm_nr_data[1][0],sgm_nr_data[1][1]); //write MSB\r
         if(ret < 0){\r
             pr_err("%s:NR mode:write sgm chip MSB error\n",__func__);\r
         }\r
-        mutex_unlock(&data->lock);\r
+        mutex_unlock(&sgm->lock);\r
     }\r
     else{\r
         dev_err(&client->dev,"wrong chipid\n");\r
@@ -308,22 +417,32 @@ static int sgm37603a_probe(struct i2c_client *client,
         dev_err(&bd->dev,"Unable to create backlight_i2c_attribute\n");\r
         goto kfree_sysfs;\r
     }\r
+#if defined(CONFIG_FB)\r
+    sgm->fb_notif.notifier_call = fb_notifier_callback;\r
+    ret = fb_register_client(&sgm->fb_notif);\r
+    if (ret) {\r
+               pr_err("Unable to register fb_notifier: %d\n", ret);\r
+               goto err_register_fb_notif_failed;\r
+    }\r
+#endif\r
     return 0;\r
-    \r
+#if defined(CONFIG_FB)
+err_register_fb_notif_failed:\r
+#endif\r
 kfree_sysfs:\r
     sysfs_remove_group(&bd->dev.kobj, &sgm37603a_attribute_group);\r
 kfree_node:\r
     backlight_device_unregister(bd);\r
 kfree_exit:\r
-    mutex_destroy(&data->lock);\r
+    mutex_destroy(&sgm->lock);\r
     return ret;\r
 }\r
 \r
 static int sgm37603a_remove(struct i2c_client *client)\r
 {\r
-    struct sgm37603a_data *data = sgmdata;\r
+    struct sgm37603a_data *sgm = sgmdata;\r
     if(sgmdata != NULL)\r
-        mutex_destroy(&data->lock);\r
+        mutex_destroy(&sgm->lock);\r
     sysfs_remove_group(&bd->dev.kobj, &sgm37603a_attribute_group);\r
     backlight_device_unregister(bd);\r
     return 0;\r
@@ -358,6 +477,7 @@ static int __init sgm37603a_init(void)
     pr_info("sgm37603a_init\n");\r
 \r
     ret = i2c_add_driver(&sgm37603a_driver);\r
+    pr_info("sgm37603a_init ret=%d\n",ret);\r
     if(ret){\r
         pr_err("fail to add sgm37603 driver\n");\r
         return ret;\r
@@ -376,4 +496,4 @@ MODULE_DESCRIPTION("LCD_BACKLIGHT davicom ic driver");
 MODULE_LICENSE("GPL");\r
 \r
 module_init(sgm37603a_init);\r
-module_exit(sgm37603a_exit);
\ No newline at end of file
+module_exit(sgm37603a_exit);\r

diff --git a/drivers/video/backlight/sgm37603a.h b/drivers/video/backlight/sgm37603a.h
index 2c4acf301058e4aabcbd83480a0f9f0bce1912cc..d9eb25a5692bfa75cf6b01fd9d60de6cbadf2c0d 100755 (executable)
--- a/drivers/video/backlight/sgm37603a.h
+++ b/drivers/video/backlight/sgm37603a.h
@@ -37,6 +37,10 @@ struct sgm37603a_data {
        struct mutex lock;\r
        unsigned char mode;\r
        char* name;\r
+#if defined(CONFIG_FB)\r
+       struct notifier_block fb_notif;\r
+#endif\r
+       unsigned char is_suspend;\r
 };\r
 \r
 unsigned char sgm_nr_data[][2]=\r