drm/rockchip: ebc_dev: release version v1.07

1.resize auto framecount, one byte per 16 pixels
2.do not change framecount value in refresh new function
3.remove ebc_refresh_task thread
4.add mutex to protect empty buf get
5.improve temperture get

Signed-off-by: Zorro Liu <lyx@rock-chips.com>
Change-Id: I80c245594cc87cc6717bafadc27562d66368eb04

drivers/gpu/drm/rockchip/ebc-dev/bufmanage/buf_manage.c

@@ -29,7 +29,8 @@ struct buf_info_s {
 	int dsp_buf_list_status;
 	struct ebc_buf_s *osd_buf;
 
-	struct mutex dsp_lock;
+	struct mutex dsp_buf_lock;
+	struct mutex ebc_buf_lock;
 };
 
 static struct buf_info_s ebc_buf_info;
@@ -56,14 +57,14 @@ int ebc_buf_release(struct ebc_buf_s  *release_buf)
 
 int ebc_remove_from_dsp_buf_list(struct ebc_buf_s *remove_buf)
 {
-	mutex_lock(&ebc_buf_info.dsp_lock);
+	mutex_lock(&ebc_buf_info.dsp_buf_lock);
 	if (ebc_buf_info.dsp_buf_list) {
 		int pos;
 
 		pos = buf_list_get_pos(ebc_buf_info.dsp_buf_list, (int *)remove_buf);
 		buf_list_remove(ebc_buf_info.dsp_buf_list, pos);
 	}
-	mutex_unlock(&ebc_buf_info.dsp_lock);
+	mutex_unlock(&ebc_buf_info.dsp_buf_lock);
 
 	return BUF_SUCCESS;
 }
@@ -74,7 +75,7 @@ int ebc_add_to_dsp_buf_list(struct ebc_buf_s *dsp_buf)
 	int temp_pos;
 	int is_full_mode = 0;
 
-	mutex_lock(&ebc_buf_info.dsp_lock);
+	mutex_lock(&ebc_buf_info.dsp_buf_lock);
 	if (ebc_buf_info.dsp_buf_list) {
 		switch (dsp_buf->buf_mode) {
 		case EPD_DU:
@@ -120,11 +121,11 @@ int ebc_add_to_dsp_buf_list(struct ebc_buf_s *dsp_buf)
 
 		dsp_buf->status = buf_dsp;
 		if (-1 == buf_list_add(ebc_buf_info.dsp_buf_list, (int *)dsp_buf, -1)) {
-			mutex_unlock(&ebc_buf_info.dsp_lock);
+			mutex_unlock(&ebc_buf_info.dsp_buf_lock);
 			return BUF_ERROR;
 		}
 	}
-	mutex_unlock(&ebc_buf_info.dsp_lock);
+	mutex_unlock(&ebc_buf_info.dsp_buf_lock);
 
 	return BUF_SUCCESS;
 }
@@ -155,10 +156,10 @@ struct ebc_buf_s *ebc_dsp_buf_get(void)
 {
 	struct ebc_buf_s *buf = NULL;
 
-	mutex_lock(&ebc_buf_info.dsp_lock);
+	mutex_lock(&ebc_buf_info.dsp_buf_lock);
 	if (ebc_buf_info.dsp_buf_list && (ebc_buf_info.dsp_buf_list->nb_elt > 0))
 		buf = (struct ebc_buf_s *)buf_list_get(ebc_buf_info.dsp_buf_list, 0);
-	mutex_unlock(&ebc_buf_info.dsp_lock);
+	mutex_unlock(&ebc_buf_info.dsp_buf_lock);
 
 	return buf;
 }
@@ -187,10 +188,11 @@ struct ebc_buf_s *ebc_osd_buf_clone(void)
 
 struct ebc_buf_s *ebc_empty_buf_get(void)
 {
-	struct ebc_buf_s *temp_buf;
+	struct ebc_buf_s *temp_buf = NULL;
 	int temp_pos;
 
-	if (ebc_buf_info.buf_list) {
+	mutex_lock(&ebc_buf_info.ebc_buf_lock);
+	while (ebc_buf_info.buf_list) {
 		temp_pos = 0;
 
 		while (temp_pos < ebc_buf_info.buf_list->nb_elt) {
@@ -199,22 +201,22 @@ struct ebc_buf_s *ebc_empty_buf_get(void)
 				if (temp_buf->status == buf_idle) {
 					temp_buf->status = buf_user;
 					memcpy(temp_buf->tid_name, current->comm, TASK_COMM_LEN); //store user thread name
-					return temp_buf;
+					goto OUT;
 				}
 				// one tid only can get one buf at one time
 				else if ((temp_buf->status == buf_user) && (!strncmp(temp_buf->tid_name, current->comm, TASK_COMM_LEN - 7))) {
-					return temp_buf;
+					goto OUT;
 				}
 			}
 		}
 		ebc_buf_info.use_buf_is_empty = 1;
 
 		wait_event_interruptible(ebc_buf_wq, ebc_buf_info.use_buf_is_empty != 1);
-
-		return ebc_empty_buf_get();
 	}
 
-	return NULL;
+OUT:
+	mutex_unlock(&ebc_buf_info.ebc_buf_lock);
+	return temp_buf;
 }
 
 unsigned long ebc_phy_buf_base_get(void)
@@ -260,7 +262,8 @@ int ebc_buf_init(unsigned long phy_start, char *mem_start, int men_len, int dest
 	if (NULL == mem_start)
 		return BUF_ERROR;
 
-	mutex_init(&ebc_buf_info.dsp_lock);
+	mutex_init(&ebc_buf_info.dsp_buf_lock);
+	mutex_init(&ebc_buf_info.ebc_buf_lock);
 
 	if (buf_list_init(&ebc_buf_info.buf_list, BUF_LIST_MAX_NUMBER))
 		return BUF_ERROR;

drivers/gpu/drm/rockchip/ebc-dev/ebc_dev.h

@@ -69,8 +69,6 @@ enum panel_refresh_mode {
 	EPD_SUSPEND		= 15,
 	EPD_RESUME		= 16,
 	EPD_POWER_OFF		= 17,
-	EPD_PART_EINK		= 18,
-	EPD_FULL_EINK		= 19,
 };
 
 /*