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Commit 7a5d2d5d authored by Steve Cohen's avatar Steve Cohen
Browse files

disp: msm: sde: skip vsync wait during rsc state switch 



When switching from CMD to VIDEO or vice-versa, HW no longer
requires a vsync wait in between since the vsyncs will be
synchronized. So skip the wait for HW which supports this
feature.

Change-Id: Ia5823495bc7bfc7d590098775b0a5f4b4347b5ed
Signed-off-by: default avatarSteve Cohen <cohens@codeaurora.org>
parent 80aa9f9c

msm/sde_rsc.c

+14 −0
Original line number Diff line number Diff line
@@ -543,6 +543,13 @@ static int sde_rsc_switch_to_cmd(struct sde_rsc_priv *rsc, 
		}

	}



	/* vsync wait not needed during VID->CMD switch (rev 4+ HW only) */

	if (rsc->current_state == SDE_RSC_VID_STATE &&

			rsc->version >= SDE_RSC_REV_4) {

		rc = 0;

		goto end;

	}



vsync_wait:

	/* indicate wait for vsync for vid to cmd state switch & cfg update */

	if (!rc && (rsc->current_state == SDE_RSC_VID_STATE ||
@@ -689,6 +696,13 @@ static int sde_rsc_switch_to_vid(struct sde_rsc_priv *rsc, 
		}

	}



	/* vsync wait not needed during CMD->VID switch (rev 4+ HW only) */

	if (rsc->current_state == SDE_RSC_CMD_STATE &&

			rsc->version >= SDE_RSC_REV_4) {

		rc = 0;

		goto end;

	}



vsync_wait:

	/* indicate wait for vsync for vid to cmd state switch & cfg update */

	if (!rc && (rsc->current_state == SDE_RSC_VID_STATE ||