drm/vc4: dpi: Fix format mapping for RGB565

[ Upstream commit 0870d86eac8a9abd89a0be1b719d5dc5bac936f0 ]

The mapping is incorrect for RGB565_1X16 as it should be
DPI_FORMAT_18BIT_666_RGB_1 instead of DPI_FORMAT_18BIT_666_RGB_3.

Fixes: 08302c35b59d ("drm/vc4: Add DPI driver")
Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://lore.kernel.org/r/20221013-rpi-dpi-improvements-v3-7-eb76e26a772d@cerno.tech
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/gpu/drm/vc4/vc4_dpi.c b/drivers/gpu/drm/vc4/vc4_dpi.c
index 1f8f44b7b5a5f161703bb6e3f03aed775069a19a..61ef7d232a12c464be826abef309e623c5b25dd9 100644 (file)
--- a/drivers/gpu/drm/vc4/vc4_dpi.c
+++ b/drivers/gpu/drm/vc4/vc4_dpi.c
@@ -179,7 +179,7 @@ static void vc4_dpi_encoder_enable(struct drm_encoder *encoder)
                                                       DPI_FORMAT);
                                break;
                        case MEDIA_BUS_FMT_RGB565_1X16:
-                               dpi_c |= VC4_SET_FIELD(DPI_FORMAT_16BIT_565_RGB_3,
+                               dpi_c |= VC4_SET_FIELD(DPI_FORMAT_16BIT_565_RGB_1,
                                                       DPI_FORMAT);
                                break;
                        default: