Commit 294ffd2b authored by Ville Syrjälä's avatar Ville Syrjälä
Browse files

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: default avatarVille Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240611133344.30673-5-ville.syrjala@linux.intel.com


Reviewed-by: default avatarJani Nikula <jani.nikula@intel.com>
parent 367cf0d8

drivers/gpu/drm/i915/display/intel_vblank.c

+10 −0
Original line number Diff line number Diff line
@@ -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;

drivers/gpu/drm/i915/display/intel_vblank.h

+1 −0
Original line number Diff line number Diff line
@@ -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);