linux-kernel - [PATCH] drm/atmel-hlcdc: set layer REP bit to enable replication logic

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Date:   Tue, 9 Jul 2019 15:35:12 +0000
From:   <Joshua.Henderson@...rochip.com>
To:     <boris.brezillon@...e-electrons.com>, <airlied@...ux.ie>,
        <Nicolas.Ferre@...rochip.com>,
        <alexandre.belloni@...e-electrons.com>
CC:     <dri-devel@...ts.freedesktop.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>
Subject: [PATCH] drm/atmel-hlcdc: set layer REP bit to enable replication
 logic

This bit enables replication logic to expand an RGB color less than 24
bits, to 24 bits, which is used internally for all formats.  Otherwise,
the least significant bits are always set to zero and the color may not
be what is expected.

Signed-off-by: Joshua Henderson <joshua.henderson@...rochip.com>
---
 drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_plane.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_plane.c b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_plane.c
index eb7c4cf..6f6cf61 100644
--- a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_plane.c
+++ b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_plane.c
@@ -389,7 +389,7 @@ atmel_hlcdc_plane_update_general_settings(struct atmel_hlcdc_plane *plane,
 	atmel_hlcdc_layer_write_cfg(&plane->layer, ATMEL_HLCDC_LAYER_DMA_CFG,
 				    cfg);
 
-	cfg = ATMEL_HLCDC_LAYER_DMA;
+	cfg = ATMEL_HLCDC_LAYER_DMA | ATMEL_HLCDC_LAYER_REP;
 
 	if (plane->base.type != DRM_PLANE_TYPE_PRIMARY) {
 		cfg |= ATMEL_HLCDC_LAYER_OVR | ATMEL_HLCDC_LAYER_ITER2BL |
-- 
2.7.4