Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 1ec80349 authored by Siddhartha Agrawal's avatar Siddhartha Agrawal
Browse files

msm: mdss: Tune the mdss event timer wakeup time 



Adjust the mdss event timer to wakeup before the readpointer
to help with latency issues.

Crs-Fixed: 840497
Change-Id: I384d7e13af1e4893aa200240c6a057ebc2bf92c6
Signed-off-by: default avatarSiddhartha Agrawal <agrawals@codeaurora.org>
parent eb310418

Documentation/devicetree/bindings/fb/mdss-dsi-panel.txt

+3 −0
Original line number Diff line number Diff line
@@ -450,6 +450,8 @@ Optional properites: 
					slice.

- qcom,mdss-dsc-config-by-manufacture-cmd: A boolean to indicates panel use manufacture command to setup pps

					instead of standard dcs type 0x0A.

- qcom,adjust-timer-wakeup-ms:		An integer value to indicate the timer delay(in ms) to accommodate

					s/w delay while configuring the event timer wakeup logic.



Note, if a given optional qcom,* binding is not present, then the driver will configure

the default values specified.
@@ -591,6 +593,7 @@ Example: 
		qcom,mdss-dsi-panel-orientation = "180"

		qcom,mdss-dsi-force-clock-lane-hs;

		qcom,compression-mode = "dsc";

		qcom,adjust-timer-wakeup-ms = <1>;

		qcom,panel-supply-entries {

			#address-cells = <1>;

			#size-cells = <0>;

drivers/video/msm/mdss/mdss_dsi_panel.c

+3 −0
Original line number Diff line number Diff line
@@ -2311,6 +2311,9 @@ static int mdss_panel_parse_dt(struct device_node *np, 
	mdss_dsi_parse_dcs_cmds(np, &ctrl_pdata->off_cmds,

		"qcom,mdss-dsi-off-command", "qcom,mdss-dsi-off-command-state");



	rc = of_property_read_u32(np, "qcom,adjust-timer-wakeup-ms", &tmp);

	pinfo->adjust_timer_delay_ms = (!rc ? tmp : 0);



	pinfo->mipi.force_clk_lane_hs = of_property_read_bool(np,

		"qcom,mdss-dsi-force-clock-lane-hs");

drivers/video/msm/mdss/mdss_mdp_ctl.c

+12 −1
Original line number Diff line number Diff line
@@ -4096,7 +4096,8 @@ int mdss_mdp_display_wakeup_time(struct mdss_mdp_ctl *ctl, 
	struct mdss_panel_info *pinfo;

	u32 clk_rate, clk_period;

	u32 current_line, total_line;

	u32 time_of_line, time_to_vsync;

	u32 time_of_line, time_to_vsync, adjust_line_ns;



	ktime_t current_time = ktime_get();



	if (!ctl->ops.read_line_cnt_fnc)
@@ -4141,6 +4142,16 @@ int mdss_mdp_display_wakeup_time(struct mdss_mdp_ctl *ctl, 
		return -EINVAL;



	time_to_vsync = time_of_line * (total_line - current_line);



	if (pinfo->adjust_timer_delay_ms) {

		adjust_line_ns = pinfo->adjust_timer_delay_ms

			* 1000000; /* convert to ns */



		/* Ignore large values of adjust_line_ns\ */

		if (time_to_vsync > adjust_line_ns)

			time_to_vsync -= adjust_line_ns;

	}



	if (!time_to_vsync)

		return -EINVAL;

drivers/video/msm/mdss/mdss_panel.c

+4 −0
Original line number Diff line number Diff line
@@ -365,6 +365,8 @@ static int _create_dsi_panel_nodes(struct mdss_panel_debugfs_info *dfs, 
			(char *)&pinfo->mipi.rx_eot_ignore);

	debugfs_create_u8("tx_eot_append", 0644, mipi_root,

			(char *)&pinfo->mipi.tx_eot_append);

	debugfs_create_u32("adjust_timer_ms", 0644, mipi_root,

			(u32 *)&pinfo->adjust_timer_delay_ms);



	/* TE reltaed nodes */

	debugfs_create_u32("te_tear_check_en", 0644, te_root,
@@ -539,6 +541,8 @@ void mdss_panel_debugfsinfo_to_panelinfo(struct mdss_panel_info *panel_info) 
		pinfo->bl_min = dfs_info->panel_info.bl_min;

		pinfo->bl_max = dfs_info->panel_info.bl_max;

		pinfo->brightness_max = dfs_info->panel_info.brightness_max;

		pinfo->adjust_timer_delay_ms =

			dfs_info->panel_info.adjust_timer_delay_ms;



		if ((pinfo->type == MIPI_CMD_PANEL) ||

		    (pinfo->type == MIPI_VIDEO_PANEL)) {

drivers/video/msm/mdss/mdss_panel.h

+6 −0
Original line number Diff line number Diff line
@@ -575,6 +575,12 @@ struct mdss_panel_info { 
	struct lvds_panel_info lvds;

	struct edp_panel_info edp;



	/*

	 * Delay(in ms) to accommodate s/w delay while

	 * configuring the event timer wakeup logic.

	 */

	u32 adjust_timer_delay_ms;



	/* debugfs structure for the panel */

	struct mdss_panel_debugfs_info *debugfs_info;

};