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@microchip.com>
Acked-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/1562686509-8747-1-git-send-email-joshua.henderson@microchip.com

diff --git a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_plane.c b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_plane.c
index 0ee5b7a3a4b0fdfccda0103f0c1fb1adb43a2262..776ddc9b9d550602e9e158328317a6500b91b7db 100644 (file)
--- a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_plane.c
+++ b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_plane.c
@@ -372,7 +372,7 @@ 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 |