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Commit 1c031441 authored by Archit Taneja's avatar Archit Taneja Committed by Tomi Valkeinen
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OMAPDSS: DISPC: Don't allow predecimation for writeback 



Since writeback writes to a buffer instead of reading from one, predecimation
doesn't make sense for it. Configure the width and height predecimation limits
to 1 if the plane is writeback.

Signed-off-by: default avatarArchit Taneja <archit@ti.com>
Signed-off-by: default avatarTomi Valkeinen <tomi.valkeinen@ti.com>
parent 5d501085

drivers/video/omap2/dss/dispc.c

+8 −3
Original line number Diff line number Diff line
@@ -2315,9 +2315,14 @@ static int dispc_ovl_calc_scaling(enum omap_plane plane, 
	if ((caps & OMAP_DSS_OVL_CAP_SCALE) == 0)

		return -EINVAL;



	if (plane == OMAP_DSS_WB) {

		*x_predecim = *y_predecim = 1;

	} else {

		*x_predecim = max_decim_limit;

		*y_predecim = (rotation_type == OMAP_DSS_ROT_TILER &&

			dss_has_feature(FEAT_BURST_2D)) ? 2 : max_decim_limit;

				dss_has_feature(FEAT_BURST_2D)) ?

				2 : max_decim_limit;

	}



	if (color_mode == OMAP_DSS_COLOR_CLUT1 ||

	    color_mode == OMAP_DSS_COLOR_CLUT2 ||