github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-05-28 17:13:52 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

drm/i915: Handle interlaced modes in intel_set_transcoder_timings_lrr()

Browse Source 
I want to start using intel_set_transcoder_timings_lrr() also for
fixing up the vblank delay during boot. To that end make sure it
can cope with interlaced modes as well.

Note that we have soft-defeatured interlaced modes on tgl+ so
technically this is dead code, but if we ever have the need to
bring interlaced support back it seems better to handle this.

Cc: Paz Zcharya <pazz@chromium.org>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250116201637.22486-3-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
This commit is contained in:
Ville Syrjälä 2025-01-16 22:16:31 +02:00
parent c5303240e0
commit 8804269627
1 changed files with 6 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
drivers/gpu/drm/i915/display/intel_display.c
View File

@ -2923,6 +2923,12 @@ static void intel_set_transcoder_timings_lrr(const struct intel_crtc_state *crtc
crtc_vblank_start = adjusted_mode->crtc_vblank_start;
crtc_vblank_end = adjusted_mode->crtc_vblank_end;
if (adjusted_mode->flags & DRM_MODE_FLAG_INTERLACE) {
/* the chip adds 2 halflines automatically */
crtc_vtotal -= 1;
crtc_vblank_end -= 1;
}
if (DISPLAY_VER(dev_priv) >= 13) {
/*
* VBLANK_START not used by hw, just clear it
@ -2931,8 +2937,6 @@ static void intel_set_transcoder_timings_lrr(const struct intel_crtc_state *crtc
crtc_vblank_start = 1;
}
drm_WARN_ON(&dev_priv->drm, adjusted_mode->flags & DRM_MODE_FLAG_INTERLACE);
/*
* The hardware actually ignores TRANS_VBLANK.VBLANK_END in DP mode.
* But let's write it anyway to keep the state checker happy.