msm: camera: isp: Program min hbi in IPP path

Userspace sends the hbi count as part of acquire. Use that
value to compute min hbi and progam the same in IPP path cfg.

CRs-Fixed: 2772278
Change-Id: Ia41c435b0fb010a3b841fa11bfcdffc4c4a11006
Signed-off-by: Karthik Anantha Ram <[email protected]>

drivers/cam_isp/isp_hw_mgr/isp_hw/ife_csid_hw/cam_ife_csid480.h

@@ -54,6 +54,7 @@ static struct cam_ife_csid_pxl_reg_offset  cam_ife_csid_480_ipp_reg_offset = {
 	.quad_cfa_bin_en_shift_val           = 30,
 	.ccif_violation_en                   = 1,
 	.overflow_ctrl_en                    = 1,
+	.hblank_cfg_shift_val                = 4,
 };
 
 static struct cam_ife_csid_pxl_reg_offset  cam_ife_csid_480_ppp_reg_offset = {

drivers/cam_isp/isp_hw_mgr/isp_hw/ife_csid_hw/cam_ife_csid_core.c

@@ -1153,12 +1153,13 @@ int cam_ife_csid_path_reserve(struct cam_ife_csid_hw *csid_hw,
 	path_data->horizontal_bin = reserve->in_port->horizontal_bin;
 	path_data->qcfa_bin = reserve->in_port->qcfa_bin;
 	path_data->num_bytes_out = reserve->in_port->num_bytes_out;
+	path_data->hblank_cnt = reserve->in_port->hbi_cnt;
 
 	CAM_DBG(CAM_ISP,
-		"Res id: %d height:%d line_start %d line_stop %d crop_en %d",
+		"Res id: %d height:%d line_start %d line_stop %d crop_en %d hblank %u",
 		reserve->res_id, reserve->in_port->height,
 		reserve->in_port->line_start, reserve->in_port->line_stop,
-		path_data->crop_enable);
+		path_data->crop_enable, path_data->hblank_cnt);
 
 	if ((reserve->in_port->res_type == CAM_ISP_IFE_IN_RES_CPHY_TPG_0) ||
 		(reserve->in_port->res_type == CAM_ISP_IFE_IN_RES_CPHY_TPG_1) ||
@@ -1857,6 +1858,17 @@ static int cam_ife_csid_init_config_pxl_path(
 	val = cam_io_r_mb(soc_info->reg_map[0].mem_base +
 		pxl_reg->csid_pxl_cfg1_addr);
 
+	/* Program min hbi between lines */
+	if ((path_data->hblank_cnt) && (path_data->hblank_cnt <=
+		(CAM_CSID_MIN_HBI_CFG_MAX_VAL * 16))) {
+		if ((path_data->hblank_cnt % 16) == 0)
+			val |= ((path_data->hblank_cnt / 16) <<
+				pxl_reg->hblank_cfg_shift_val);
+		else
+			val |=  (((path_data->hblank_cnt / 16) + 1) <<
+				pxl_reg->hblank_cfg_shift_val);
+	}
+
 	/* select the post irq sub sample strobe for time stamp capture */
 	val |= CSID_TIMESTAMP_STB_POST_IRQ;
 	cam_io_w_mb(val, soc_info->reg_map[0].mem_base +

drivers/cam_isp/isp_hw_mgr/isp_hw/ife_csid_hw/cam_ife_csid_core.h

@@ -73,6 +73,7 @@
 #define CSID_DEBUG_DISABLE_EARLY_EOF              BIT(8)
 
 #define CAM_CSID_EVT_PAYLOAD_MAX                  10
+#define CAM_CSID_MIN_HBI_CFG_MAX_VAL              0xF
 
 /* enum cam_csid_path_halt_mode select the path halt mode control */
 enum cam_csid_path_halt_mode {
@@ -159,6 +160,7 @@ struct cam_ife_csid_pxl_reg_offset {
 	uint32_t quad_cfa_bin_en_shift_val;
 	uint32_t ccif_violation_en;
 	uint32_t overflow_ctrl_en;
+	uint32_t hblank_cfg_shift_val;
 	uint32_t halt_master_sel_en;
 	uint32_t halt_sel_internal_master_val;
 };
@@ -518,6 +520,7 @@ struct cam_ife_csid_cid_data {
  *                  Slave will synchronize with master Start and stop operations
  * @clk_rate        Clock rate
  * @num_bytes_out:  Number of output bytes per cycle
+ * @hblank_cnt:     HBI count
  *
  */
 struct cam_ife_csid_path_cfg {
@@ -543,6 +546,7 @@ struct cam_ife_csid_path_cfg {
 	uint32_t                        horizontal_bin;
 	uint32_t                        qcfa_bin;
 	uint32_t                        num_bytes_out;
+	uint32_t                        hblank_cnt;
 };
 
 /**