msm: camera: csiphy: Add mipi flags to phy config

-Add mipi flags mask to phy cmd buffer.
-Enable skew calibration settings only if the
corresponding flag is set.

CRs-fixed: 2697576
Change-Id: I0353e57daf49ce15d7573b57dbaa9363dbc59635
Signed-off-by: Shravan Nevatia <snevatia@codeaurora.org>

drivers/cam_sensor_module/cam_csiphy/cam_csiphy_core.c

@@ -27,6 +27,9 @@
 #define SEC_LANE_CP_REG_LEN 32
 #define MAX_PHY_MSK_PER_REG 4
 
+/* Mask to enable skew calibration registers */
+#define SKEW_CAL_MASK 0x2
+
 static int csiphy_dump;
 module_param(csiphy_dump, int, 0644);
 
@@ -345,6 +348,8 @@ int32_t cam_cmd_buf_parser(struct csiphy_device *csiphy_dev,
 		cam_cmd_csiphy_info->data_rate;
 	csiphy_dev->csiphy_info[index].secure_mode =
 		cam_cmd_csiphy_info->secure_mode;
+	csiphy_dev->csiphy_info[index].mipi_flags =
+		cam_cmd_csiphy_info->mipi_flags;
 
 	lane_assign = csiphy_dev->csiphy_info[index].lane_assign;
 	lane_cnt = csiphy_dev->csiphy_info[index].lane_cnt;
@@ -596,6 +601,7 @@ int32_t cam_csiphy_config_dev(struct csiphy_device *csiphy_dev,
 	uint8_t      lane_cnt;
 	int          max_lanes = 0;
 	uint16_t     settle_cnt = 0;
+	uint8_t      skew_cal_enable = 0;
 	uint64_t     intermediate_var;
 	uint8_t      lane_pos = 0;
 	int          index;
@@ -735,6 +741,8 @@ int32_t cam_csiphy_config_dev(struct csiphy_device *csiphy_dev,
 	intermediate_var = csiphy_dev->csiphy_info[index].settle_time;
 	do_div(intermediate_var, 200000000);
 	settle_cnt = intermediate_var;
+	skew_cal_enable =
+		csiphy_dev->csiphy_info[index].mipi_flags & SKEW_CAL_MASK;
 
 	for (lane_pos = 0; lane_pos < max_lanes; lane_pos++) {
 		CAM_DBG(CAM_CSIPHY, "lane_pos: %d is configuring", lane_pos);
@@ -760,6 +768,12 @@ int32_t cam_csiphy_config_dev(struct csiphy_device *csiphy_dev,
 					csiphybase +
 					reg_array[lane_pos][i].reg_addr);
 			break;
+			case CSIPHY_SKEW_CAL:
+			if (skew_cal_enable)
+				cam_io_w_mb(reg_array[lane_pos][i].reg_data,
+					csiphybase +
+					reg_array[lane_pos][i].reg_addr);
+			break;
 			default:
 				CAM_DBG(CAM_CSIPHY, "Do Nothing");
 			break;

drivers/cam_sensor_module/cam_csiphy/cam_csiphy_dev.h

@@ -53,6 +53,7 @@
 #define CSIPHY_DNP_PARAMS                4
 #define CSIPHY_2PH_REGS                  5
 #define CSIPHY_3PH_REGS                  6
+#define CSIPHY_SKEW_CAL                  7
 
 #define CSIPHY_MAX_INSTANCES_PER_PHY     3
 
@@ -224,6 +225,7 @@ struct csiphy_ctrl_t {
  * @settle_time                :  Settling time in ms
  * @data_rate                  :  Data rate in mbps
  * @csiphy_3phase              :  To identify DPHY or CPHY
+ * @mipi_flags                 :  MIPI phy flags
  * @csiphy_cpas_cp_reg_mask    :  CP reg mask for phy instance
  * @hdl_data                   :  CSIPHY handle table
  */
@@ -235,6 +237,7 @@ struct cam_csiphy_param {
 	uint64_t                   settle_time;
 	uint64_t                   data_rate;
 	int                        csiphy_3phase;
+	uint16_t                   mipi_flags;
 	uint64_t                   csiphy_cpas_cp_reg_mask;
 	struct csiphy_hdl_tbl      hdl_data;
 };

include/uapi/camera/media/cam_sensor.h

@@ -326,6 +326,7 @@ struct cam_cmd_unconditional_wait {
 /**
  * cam_csiphy_info       : Provides cmdbuffer structre
  * @lane_assign          : Lane sensor will be using
+ * @mipi_flags           : MIPI phy flags
  * @lane_cnt             : Total number of lanes
  * @secure_mode          : Secure mode flag to enable / disable
  * @settle_time          : Settling time in ms
@@ -335,7 +336,7 @@ struct cam_cmd_unconditional_wait {
 struct cam_csiphy_info {
 	__u16    reserved;
 	__u16    lane_assign;
-	__u16    reserved1;
+	__u16    mipi_flags;
 	__u8     lane_cnt;
 	__u8     secure_mode;
 	__u64    settle_time;