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Commit c777ae99 authored by Sandeep Panda's avatar Sandeep Panda
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msm: mdss: Wait for one vsync after turn off TG 



TG control register is double buffered register. When
disable, it will only take effect once vsync has come.
So wait for at least once vsync to ensure TG is off.

Change-Id: I35d8c8be4bc72ababd2a04bb7718688404d775eb
Signed-off-by: default avatarSandeep Panda <spanda@codeaurora.org>
parent a4cbc77a

drivers/video/msm/mdss/mdss_mdp_intf_video.c

+6 −8
Original line number Diff line number Diff line
@@ -324,14 +324,12 @@ static int mdss_mdp_video_stop(struct mdss_mdp_ctl *ctl) 
		WARN(rc, "intf %d blank error (%d)\n", ctl->intf_num, rc);



		mdp_video_write(ctx, MDSS_MDP_REG_INTF_TIMING_ENGINE_EN, 0);

		/* wait for at least one VSYNC on HDMI intf for proper TG OFF */

		if (MDSS_INTF_HDMI == ctx->intf_type) {

		/* wait for at least one VSYNC for proper TG OFF */

		frame_rate = mdss_panel_get_framerate

				(&(ctl->panel_data->panel_info));

		if (!(frame_rate >= 24 && frame_rate <= 240))

			frame_rate = 24;

		msleep((1000/frame_rate) + 1);

		}



		mdss_iommu_ctrl(0);

		mdss_mdp_clk_ctrl(MDP_BLOCK_POWER_OFF, false);