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| author | Tomi Valkeinen <tomi.valkeinen+renesas@ideasonboard.com> | 2022-08-17 16:28:02 +0300 |
|---|---|---|
| committer | Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> | 2022-09-07 23:48:40 +0300 |
| commit | 6d8277cfda96c7dd17a43f645858d2d39a7a4a20 (patch) | |
| tree | 1f3d2f9566f302bf7c39d9797d53c415109e69f8 /drivers/gpu/drm/rcar-du/rcar_du_drv.c | |
| parent | 48d43c4f3f55f4599c294007644184fdce44dafe (diff) | |
| download | linux-stable-6d8277cfda96c7dd17a43f645858d2d39a7a4a20.tar.gz linux-stable-6d8277cfda96c7dd17a43f645858d2d39a7a4a20.tar.bz2 linux-stable-6d8277cfda96c7dd17a43f645858d2d39a7a4a20.zip | |
drm: rcar-du: Fix r8a779a0 color issue
The rcar DU driver on r8a779a0 has a bug causing some specific colors
getting converted to transparent colors, which then (usually) show as
black pixels on the screen.
The reason seems to be that the driver sets PnMR_SPIM_ALP bit in
PnMR.SPIM field, which is an illegal setting on r8a779a0. The
PnMR_SPIM_EOR bit also illegal.
Add a new feature flag for this (lack of a) feature and make sure the
bits are zero on r8a779a0.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen+renesas@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Diffstat (limited to 'drivers/gpu/drm/rcar-du/rcar_du_drv.c')
| -rw-r--r-- | drivers/gpu/drm/rcar-du/rcar_du_drv.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_drv.c b/drivers/gpu/drm/rcar-du/rcar_du_drv.c index 541c202c993a..a2776f1d6f2c 100644 --- a/drivers/gpu/drm/rcar-du/rcar_du_drv.c +++ b/drivers/gpu/drm/rcar-du/rcar_du_drv.c @@ -506,7 +506,8 @@ static const struct rcar_du_device_info rcar_du_r8a7799x_info = { static const struct rcar_du_device_info rcar_du_r8a779a0_info = { .gen = 3, .features = RCAR_DU_FEATURE_CRTC_IRQ - | RCAR_DU_FEATURE_VSP1_SOURCE, + | RCAR_DU_FEATURE_VSP1_SOURCE + | RCAR_DU_FEATURE_NO_BLENDING, .channels_mask = BIT(1) | BIT(0), .routes = { /* R8A779A0 has two MIPI DSI outputs. */ |