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| author | Ville Syrjälä <ville.syrjala@linux.intel.com> | 2024-06-11 16:33:37 +0300 |
|---|---|---|
| committer | Ville Syrjälä <ville.syrjala@linux.intel.com> | 2024-06-20 15:37:47 +0300 |
| commit | 294ffd2bfaa3bb0434d2b86321c5de54bd79732a (patch) | |
| tree | da4d78df4680759e258c772a6d8edd50b5d74549 | |
| parent | 367cf0d8a6760e244f30d36cd3b2120f890837a7 (diff) | |
| download | linux-294ffd2bfaa3bb0434d2b86321c5de54bd79732a.tar.gz linux-294ffd2bfaa3bb0434d2b86321c5de54bd79732a.tar.bz2 linux-294ffd2bfaa3bb0434d2b86321c5de54bd79732a.zip | |
drm/i915: Introduce intel_mode_vdisplay()
The DSB code will need to know the hardware's idea of vertical
active, as that is also what defines the start of undelayed
vblank. Introduce a helper that gives us that information,
in line with the other intel_mode_v*() functions.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240611133344.30673-5-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_vblank.c | 10 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_vblank.h | 1 |
2 files changed, 11 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_vblank.c b/drivers/gpu/drm/i915/display/intel_vblank.c index e5db54b1c632..5b065e1cd4e4 100644 --- a/drivers/gpu/drm/i915/display/intel_vblank.c +++ b/drivers/gpu/drm/i915/display/intel_vblank.c @@ -557,6 +557,16 @@ void intel_crtc_update_active_timings(const struct intel_crtc_state *crtc_state, spin_unlock_irqrestore(&i915->drm.vblank_time_lock, irqflags); } +int intel_mode_vdisplay(const struct drm_display_mode *mode) +{ + int vdisplay = mode->crtc_vdisplay; + + if (mode->flags & DRM_MODE_FLAG_INTERLACE) + vdisplay = DIV_ROUND_UP(vdisplay, 2); + + return vdisplay; +} + int intel_mode_vblank_start(const struct drm_display_mode *mode) { int vblank_start = mode->crtc_vblank_start; diff --git a/drivers/gpu/drm/i915/display/intel_vblank.h b/drivers/gpu/drm/i915/display/intel_vblank.h index b51ae2c1039e..7e526f6861e4 100644 --- a/drivers/gpu/drm/i915/display/intel_vblank.h +++ b/drivers/gpu/drm/i915/display/intel_vblank.h @@ -20,6 +20,7 @@ struct intel_vblank_evade_ctx { bool need_vlv_dsi_wa; }; +int intel_mode_vdisplay(const struct drm_display_mode *mode); int intel_mode_vblank_start(const struct drm_display_mode *mode); int intel_mode_vblank_end(const struct drm_display_mode *mode); int intel_mode_vtotal(const struct drm_display_mode *mode); |