Commit 615e29ee authored by Ville Syrjälä's avatar Ville Syrjälä Committed by Manasi Navare
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drm/i915: Extract intel_mode_vblank_start() 



We want to calculate the vblank_start for vblank evasion
differently for vrr. To make that nicer lets first extract
the current non-vrr case to a helper.

Signed-off-by: default avatarVille Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: default avatarManasi Navare <manasi.d.navare@intel.com>
Signed-off-by: default avatarManasi Navare <manasi.d.navare@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210122232647.22688-4-manasi.d.navare@intel.com
parent fa429c04

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

+11 −3
Original line number Diff line number Diff line
@@ -62,6 +62,16 @@ int intel_usecs_to_scanlines(const struct drm_display_mode *adjusted_mode, 
			    1000 * adjusted_mode->crtc_htotal);

}



static int intel_mode_vblank_start(const struct drm_display_mode *mode)

{

	int vblank_start = mode->crtc_vblank_start;



	if (mode->flags & DRM_MODE_FLAG_INTERLACE)

		vblank_start = DIV_ROUND_UP(vblank_start, 2);



	return vblank_start;

}



/**

 * intel_pipe_update_start() - start update of a set of display registers

 * @new_crtc_state: the new crtc state
@@ -90,9 +100,7 @@ void intel_pipe_update_start(const struct intel_crtc_state *new_crtc_state) 
	if (new_crtc_state->uapi.async_flip)

		return;



	vblank_start = adjusted_mode->crtc_vblank_start;

	if (adjusted_mode->flags & DRM_MODE_FLAG_INTERLACE)

		vblank_start = DIV_ROUND_UP(vblank_start, 2);

	vblank_start = intel_mode_vblank_start(adjusted_mode);



	/* FIXME needs to be calibrated sensibly */

	min = vblank_start - intel_usecs_to_scanlines(adjusted_mode,