Commit 6195f850 authored by Ville Syrjälä's avatar Ville Syrjälä
Browse files

drm/i915: Update plane ratio for icl+ 



According to bspec icl+ no longer need any extra cdclk guardband
for 64bpp formats. Make it so.

Signed-off-by: default avatarVille Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210330162416.18616-2-ville.syrjala@linux.intel.com


Reviewed-by: default avatarJani Nikula <jani.nikula@intel.com>
parent efc52308

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

+10 −1
Original line number Diff line number Diff line
@@ -286,6 +286,15 @@ bool icl_is_hdr_plane(struct drm_i915_private *dev_priv, enum plane_id plane_id) 
		icl_hdr_plane_mask() & BIT(plane_id);

}



static int icl_plane_min_cdclk(const struct intel_crtc_state *crtc_state,

			       const struct intel_plane_state *plane_state)

{

	unsigned int pixel_rate = intel_plane_pixel_rate(crtc_state, plane_state);



	/* two pixels per clock */

	return DIV_ROUND_UP(pixel_rate, 2);

}



static void

glk_plane_ratio(const struct intel_plane_state *plane_state,

		unsigned int *num, unsigned int *den)
@@ -1980,7 +1989,7 @@ skl_universal_plane_create(struct drm_i915_private *dev_priv, 
		plane->min_width = icl_plane_min_width;

		plane->max_width = icl_plane_max_width;

		plane->max_height = icl_plane_max_height;

		plane->min_cdclk = glk_plane_min_cdclk;

		plane->min_cdclk = icl_plane_min_cdclk;

	} else if (DISPLAY_VER(dev_priv) >= 10) {

		plane->max_width = glk_plane_max_width;

		plane->max_height = skl_plane_max_height;