samsung-sm8650/android_kernel_samsung_sm8650-modules
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

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

Browse Source 
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: Steve Cohen <cohens@codeaurora.org>
This commit is contained in:
Steve Cohen
2020-01-20 14:48:56 -05:00
parent 80aa9f9c32
commit 7a5d2d5d00
1 changed files with 14 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

14
msm/sde_rsc.c
View File

@@ -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 ||