video: driver: Update session priority setting

Modify session priority controls -
  ___________________________________________________________
 |  Description    |    HAL Value     |Driver value|FW Value|
 |_________________|__________________|____________|________|
 |Critical Priority| Vendor Extension | Via control|   0    |
 |      RT         |        0         |      0     |   1    |
 |      NRT        |     -1 to -4     |     1-4    |  2-5   |
 |_________________|__________________|____________|________|

Change-Id: I7b28109bde3968f38c2e3cc42cf4cf5dd195cc10
Signed-off-by: Vedang Nagar <[email protected]>

driver/platform/common/src/msm_vidc_platform.c

@@ -2478,27 +2478,26 @@ int msm_vidc_adjust_session_priority(void *instance, struct v4l2_ctrl *ctrl)
 	}
 	/*
 	 * Priority handling
-	 * Client will set 0 (realtime), 1+ (non-realtime)
-	 * Driver adds NRT_PRIORITY_OFFSET (2) to clients non-realtime priority
-	 * and hence PRIORITY values in the driver become 0, 3+.
-	 * Driver may move decode realtime sessions to non-realtime by
-	 * increasing priority by 1 to RT sessions in HW overloaded cases.
-	 * So driver PRIORITY values can be 0, 1, 3+.
+	 * Client will set 0 (realtime), (1 to 4) (non-realtime)
 	 * When driver setting priority to firmware, driver adds
 	 * FIRMWARE_PRIORITY_OFFSET (1) for all sessions except
 	 * non-critical sessions. So finally firmware priority values ranges
 	 * from 0 (Critical session), 1 (realtime session),
-	 * 2+ (non-realtime session)
+	 * (2 to 5) (non-realtime session).
+	 * Driver may move decode realtime sessions to non-realtime by
+	 * increasing priority by 1 to RT sessions in HW overloaded cases.
+	 * Following will be priority based on requirement -
+	 *  ___________________________________________________________
+	 *  |  Description    |    HAL Value     |Driver value|FW Value|
+	 *  |_________________|__________________|____________|________|
+	 *  |Critical Priority| Vendor Extension | Via control|   0    |
+	 *  |      RT         |        0         |      0     |   1    |
+	 *  |      NRT        |     -1 to -4     |     1-4    |  2-5   |
+	 *  |_________________|__________________|____________|________|
 	 */
-	if (ctrl) {
-		/* add offset when client sets non-realtime */
-		if (ctrl->val)
-			adjusted_value = ctrl->val + NRT_PRIORITY_OFFSET;
-		else
-			adjusted_value = ctrl->val;
-	} else {
-		adjusted_value = inst->capabilities[PRIORITY].value;
-	}
+
+	adjusted_value = ctrl ? ctrl->val :
+		inst->capabilities[PRIORITY].value;
 
 	msm_vidc_update_cap_value(inst, PRIORITY, adjusted_value, __func__);
 

driver/platform/kalama/src/msm_vidc_kalama.c

@@ -1589,7 +1589,7 @@ static struct msm_platform_inst_capability instance_cap_data_kalama[] = {
 		CAP_FLAG_INPUT_PORT | CAP_FLAG_DYNAMIC_ALLOWED},
 
 	{PRIORITY, DEC|ENC, CODECS_ALL,
-		0, 1 + NRT_PRIORITY_OFFSET, 1, 1 + NRT_PRIORITY_OFFSET,
+		0, 4, 1, 4,
 		V4L2_CID_MPEG_VIDC_PRIORITY,
 		HFI_PROP_SESSION_PRIORITY,
 		CAP_FLAG_DYNAMIC_ALLOWED},

driver/platform/pineapple/src/msm_vidc_pineapple.c

@@ -1693,7 +1693,7 @@ static struct msm_platform_inst_capability instance_cap_data_pineapple[] = {
 		CAP_FLAG_INPUT_PORT | CAP_FLAG_DYNAMIC_ALLOWED},
 
 	{PRIORITY, DEC|ENC, CODECS_ALL,
-		0, 1 + NRT_PRIORITY_OFFSET, 1, 1 + NRT_PRIORITY_OFFSET,
+		0, 4, 1, 4,
 		V4L2_CID_MPEG_VIDC_PRIORITY,
 		HFI_PROP_SESSION_PRIORITY,
 		CAP_FLAG_DYNAMIC_ALLOWED},

driver/platform/waipio/src/waipio.c

@@ -1208,7 +1208,7 @@ static struct msm_platform_inst_capability instance_cap_data_waipio[] = {
 		CAP_FLAG_INPUT_PORT | CAP_FLAG_DYNAMIC_ALLOWED},
 
 	{PRIORITY, DEC|ENC, CODECS_ALL,
-		0, 1 + NRT_PRIORITY_OFFSET, 1, 1 + NRT_PRIORITY_OFFSET,
+		0, 4, 1, 4,
 		0,
 		HFI_PROP_SESSION_PRIORITY,
 		CAP_FLAG_DYNAMIC_ALLOWED},