msm: mdss: Add HFP_CALC_CLK way to switch frame rate

Add support to switch non-standard framerate.To achieve this,
first map the fps to standard fps and then tune pixel clock
based non-standard framerate. Panel porches might need update
before pixel clock tuning based on standard framerate mapping.

CRs-fixed: 1032036
Change-Id: I49995875338cd2a3b57e88753cfda1bfa97910dd
Signed-off-by: feifanz <feifanz@codeaurora.org>
Signed-off-by: Krishna Srinivas <krisrini@codeaurora.org>

drivers/video/fbdev/msm/mdss_mdp_ctl.c

@@ -5493,8 +5493,13 @@ int mdss_mdp_ctl_update_fps(struct mdss_mdp_ctl *ctl)
 		(pinfo->dfps_update == DFPS_IMMEDIATE_PORCH_UPDATE_MODE_HFP) ||
 		(pinfo->dfps_update ==
 			DFPS_IMMEDIATE_MULTI_UPDATE_MODE_CLK_HFP) ||
+		(pinfo->dfps_update ==
+			DFPS_IMMEDIATE_MULTI_MODE_HFP_CALC_CLK) ||
 		pinfo->dfps_update == DFPS_IMMEDIATE_CLK_UPDATE_MODE) {
-		new_fps = mdss_panel_get_framerate(pinfo);
+		if (pinfo->type == DTV_PANEL)
+			new_fps = pinfo->lcdc.frame_rate;
+		else
+			new_fps = mdss_panel_get_framerate(pinfo);
 	} else {
 		new_fps = pinfo->new_fps;
 	}

drivers/video/fbdev/msm/mdss_mdp_intf_video.c

@@ -1424,7 +1424,9 @@ static int mdss_mdp_video_config_fps(struct mdss_mdp_ctl *ctl, int new_fps)
 				pdata->panel_info.dfps_update
 				== DFPS_IMMEDIATE_PORCH_UPDATE_MODE_HFP ||
 				pdata->panel_info.dfps_update
-				== DFPS_IMMEDIATE_MULTI_UPDATE_MODE_CLK_HFP) {
+				== DFPS_IMMEDIATE_MULTI_UPDATE_MODE_CLK_HFP ||
+				pdata->panel_info.dfps_update
+				== DFPS_IMMEDIATE_MULTI_MODE_HFP_CALC_CLK) {
 			unsigned long flags;
 			if (!ctx->timegen_en) {
 				pr_err("TG is OFF. DFPS mode invalid\n");

drivers/video/fbdev/msm/mdss_mdp_overlay.c

@@ -2998,16 +2998,23 @@ static void cache_initial_timings(struct mdss_panel_data *pdata)
 		 * This value will change dynamically once the
 		 * actual dfps update happen in hw.
 		 */
-		pdata->panel_info.current_fps =
+		if (pdata->panel_info.type == DTV_PANEL)
-			mdss_panel_get_framerate(&pdata->panel_info);
+			pdata->panel_info.current_fps =
-
+				pdata->panel_info.lcdc.frame_rate;
+		else
+			pdata->panel_info.current_fps =
+				mdss_panel_get_framerate(&pdata->panel_info);
 		/*
 		 * Keep the initial fps and porch values for this panel before
 		 * any dfps update happen, this is to prevent losing precision
 		 * in further calculations.
 		 */
-		pdata->panel_info.default_fps =
+		if (pdata->panel_info.type == DTV_PANEL)
-			mdss_panel_get_framerate(&pdata->panel_info);
+			pdata->panel_info.default_fps =
+				pdata->panel_info.lcdc.frame_rate;
+		else
+			pdata->panel_info.default_fps =
+				mdss_panel_get_framerate(&pdata->panel_info);
 
 		if (pdata->panel_info.dfps_update ==
 					DFPS_IMMEDIATE_PORCH_UPDATE_MODE_VFP) {
@@ -3019,7 +3026,9 @@ static void cache_initial_timings(struct mdss_panel_data *pdata)
 		} else if (pdata->panel_info.dfps_update ==
 				DFPS_IMMEDIATE_PORCH_UPDATE_MODE_HFP ||
 			pdata->panel_info.dfps_update ==
-				DFPS_IMMEDIATE_MULTI_UPDATE_MODE_CLK_HFP) {
+				DFPS_IMMEDIATE_MULTI_UPDATE_MODE_CLK_HFP ||
+			pdata->panel_info.dfps_update ==
+				DFPS_IMMEDIATE_MULTI_MODE_HFP_CALC_CLK) {
 			pdata->panel_info.saved_total =
 				mdss_panel_get_htotal(&pdata->panel_info, true);
 			pdata->panel_info.saved_fporch =
@@ -3088,8 +3097,25 @@ static void dfps_update_panel_params(struct mdss_panel_data *pdata,
 		pdata->panel_info.lcdc.h_pulse_width = data->hpw;
 
 		pdata->panel_info.clk_rate = data->clk_rate;
+		if (pdata->panel_info.type == DTV_PANEL)
+			pdata->panel_info.clk_rate *= 1000;
 
 		dfps_update_fps(&pdata->panel_info, new_fps);
+	} else if (pdata->panel_info.dfps_update ==
+		DFPS_IMMEDIATE_MULTI_MODE_HFP_CALC_CLK) {
+
+		pr_debug("hfp=%d, hbp=%d, hpw=%d, clk=%d, fps=%d\n",
+			data->hfp, data->hbp, data->hpw,
+			data->clk_rate, data->fps);
+
+		pdata->panel_info.lcdc.h_front_porch = data->hfp;
+		pdata->panel_info.lcdc.h_back_porch  = data->hbp;
+		pdata->panel_info.lcdc.h_pulse_width = data->hpw;
+
+		pdata->panel_info.clk_rate = data->clk_rate;
+
+		dfps_update_fps(&pdata->panel_info, new_fps);
+		mdss_panel_update_clk_rate(&pdata->panel_info, new_fps);
 	} else {
 		dfps_update_fps(&pdata->panel_info, new_fps);
 		mdss_panel_update_clk_rate(&pdata->panel_info, new_fps);
@@ -3164,7 +3190,9 @@ static ssize_t dynamic_fps_sysfs_wta_dfps(struct device *dev,
 	}
 
 	if (pdata->panel_info.dfps_update ==
-		DFPS_IMMEDIATE_MULTI_UPDATE_MODE_CLK_HFP) {
+		DFPS_IMMEDIATE_MULTI_UPDATE_MODE_CLK_HFP ||
+		pdata->panel_info.dfps_update ==
+		DFPS_IMMEDIATE_MULTI_MODE_HFP_CALC_CLK) {
 		if (sscanf(buf, "%u %u %u %u %u",
 		    &data.hfp, &data.hbp, &data.hpw,
 		    &data.clk_rate, &data.fps) != 5) {
@@ -3179,7 +3207,10 @@ static ssize_t dynamic_fps_sysfs_wta_dfps(struct device *dev,
 		}
 	}
 
-	panel_fps = mdss_panel_get_framerate(&pdata->panel_info);
+	if (pdata->panel_info.type == DTV_PANEL)
+		panel_fps = pdata->panel_info.lcdc.frame_rate;
+	else
+		panel_fps = mdss_panel_get_framerate(&pdata->panel_info);
 
 	if (data.fps == panel_fps) {
 		pr_debug("%s: FPS is already %d\n",

drivers/video/fbdev/msm/mdss_panel.h

@@ -537,7 +537,10 @@ struct dynamic_fps_data {
  * @DFPS_IMMEDIATE_PORCH_UPDATE_MODE_VFP: update fps using vertical timings
  * @DFPS_IMMEDIATE_PORCH_UPDATE_MODE_HFP: update fps using horizontal timings
  * @DFPS_IMMEDIATE_MULTI_UPDATE_MODE_CLK_HFP: update fps using both horizontal
- *    timings and clock.
+ *  timings and clock.
+ * @DFPS_IMMEDIATE_MULTI_MODE_HFP_CALC_CLK: update fps using both
+ *  horizontal timings, clock need to be caculate base on new clock and
+ *  porches.
  * @DFPS_MODE_MAX: defines maximum limit of supported modes.
  */
 enum dynamic_fps_update {
@@ -546,6 +549,7 @@ enum dynamic_fps_update {
 	DFPS_IMMEDIATE_PORCH_UPDATE_MODE_VFP,
 	DFPS_IMMEDIATE_PORCH_UPDATE_MODE_HFP,
 	DFPS_IMMEDIATE_MULTI_UPDATE_MODE_CLK_HFP,
+	DFPS_IMMEDIATE_MULTI_MODE_HFP_CALC_CLK,
 	DFPS_MODE_MAX
 };
 
@@ -975,7 +979,9 @@ static inline u32 mdss_panel_get_framerate(struct mdss_panel_info *panel_info)
 		break;
 	case DTV_PANEL:
 		if (panel_info->dynamic_fps) {
-			frame_rate = panel_info->lcdc.frame_rate;
+			frame_rate = panel_info->lcdc.frame_rate / 1000;
+			if (panel_info->lcdc.frame_rate % 1000)
+				frame_rate += 1;
 			break;
 		}
 	default: