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| author | Ville Syrjälä <ville.syrjala@linux.intel.com> | 2022-10-20 12:39:38 +0300 |
|---|---|---|
| committer | Ville Syrjälä <ville.syrjala@linux.intel.com> | 2022-10-21 13:06:54 +0300 |
| commit | 2bd0db4b3f0bd529f75b32538fc5a3775e3591c0 (patch) | |
| tree | d420b7d774bbd038e3ecd7f3a66fcf9a14270580 /drivers/gpu/drm/i915/display/intel_panel.c | |
| parent | 5988a0acad32823743b1a078b60392047aae4118 (diff) | |
| download | linux-2bd0db4b3f0bd529f75b32538fc5a3775e3591c0.tar.gz linux-2bd0db4b3f0bd529f75b32538fc5a3775e3591c0.tar.bz2 linux-2bd0db4b3f0bd529f75b32538fc5a3775e3591c0.zip | |
drm/i915: Allow panel fixed modes to have differing sync polarities
Apparently some panels declare multiple modes with random
sync polarities. Seems a bit weird, but looks like Windows/GOP
doesn't care, so let follow suit and accept alternate fixed
modes regardless of their sync polarities.
v2: Don't pollute the DRM_ namespace with a define (Jani)
Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/6968
Acked-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221020093938.27200-1-ville.syrjala@linux.intel.com
Diffstat (limited to 'drivers/gpu/drm/i915/display/intel_panel.c')
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_panel.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_panel.c b/drivers/gpu/drm/i915/display/intel_panel.c index 2b4b359b8342..69ce77711b7c 100644 --- a/drivers/gpu/drm/i915/display/intel_panel.c +++ b/drivers/gpu/drm/i915/display/intel_panel.c @@ -85,9 +85,10 @@ static bool is_alt_drrs_mode(const struct drm_display_mode *mode, static bool is_alt_fixed_mode(const struct drm_display_mode *mode, const struct drm_display_mode *preferred_mode) { - return drm_mode_match(mode, preferred_mode, - DRM_MODE_MATCH_FLAGS | - DRM_MODE_MATCH_3D_FLAGS) && + u32 sync_flags = DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NHSYNC | + DRM_MODE_FLAG_PVSYNC | DRM_MODE_FLAG_NVSYNC; + + return (mode->flags & ~sync_flags) == (preferred_mode->flags & ~sync_flags) && mode->hdisplay == preferred_mode->hdisplay && mode->vdisplay == preferred_mode->vdisplay; } |