This is a note to let you know that I've just added the patch titled
drm/rockchip: vop: Fix color for RGB888/BGR888 format on VOP full
to the 5.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
drm-rockchip-vop-fix-color-for-rgb888-bgr888-format-.patch
and it can be found in the queue-5.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 28b00281d1671a046fe8fed93b0ab660e5c57530
Author: Jonas Karlman <jonas@xxxxxxxxx>
Date: Thu Oct 26 19:14:58 2023 +0000
drm/rockchip: vop: Fix color for RGB888/BGR888 format on VOP full
[ Upstream commit bb0a05acd6121ff0e810b44fdc24dbdfaa46b642 ]
Use of DRM_FORMAT_RGB888 and DRM_FORMAT_BGR888 on e.g. RK3288, RK3328
and RK3399 result in wrong colors being displayed.
The issue can be observed using modetest:
modetest -s <connector_id>@<crtc_id>:1920x1080-60@RG24
modetest -s <connector_id>@<crtc_id>:1920x1080-60@BG24
Vendor 4.4 kernel apply an inverted rb swap for these formats on VOP
full framework (IP version 3.x) compared to VOP little framework (2.x).
Fix colors by applying different rb swap for VOP full framework (3.x)
and VOP little framework (2.x) similar to vendor 4.4 kernel.
Fixes: 85a359f25388 ("drm/rockchip: Add BGR formats to VOP")
Signed-off-by: Jonas Karlman <jonas@xxxxxxxxx>
Tested-by: Diederik de Haas <didi.debian@xxxxxxxxx>
Reviewed-by: Christopher Obbard <chris.obbard@xxxxxxxxxxxxx>
Tested-by: Christopher Obbard <chris.obbard@xxxxxxxxxxxxx>
Signed-off-by: Heiko Stuebner <heiko@xxxxxxxxx>
Link: https://patchwork.freedesktop.org/patch/msgid/20231026191500.2994225-1-jonas@xxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
index 20aa93fe9e3f2..f2edb94214761 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
@@ -234,14 +234,22 @@ static inline void vop_cfg_done(struct vop *vop)
VOP_REG_SET(vop, common, cfg_done, 1);
}
-static bool has_rb_swapped(uint32_t format)
+static bool has_rb_swapped(uint32_t version, uint32_t format)
{
switch (format) {
case DRM_FORMAT_XBGR8888:
case DRM_FORMAT_ABGR8888:
- case DRM_FORMAT_BGR888:
case DRM_FORMAT_BGR565:
return true;
+ /*
+ * full framework (IP version 3.x) only need rb swapped for RGB888 and
+ * little framework (IP version 2.x) only need rb swapped for BGR888,
+ * check for 3.x to also only rb swap BGR888 for unknown vop version
+ */
+ case DRM_FORMAT_RGB888:
+ return VOP_MAJOR(version) == 3;
+ case DRM_FORMAT_BGR888:
+ return VOP_MAJOR(version) != 3;
default:
return false;
}
@@ -886,7 +894,7 @@ static void vop_plane_atomic_update(struct drm_plane *plane,
VOP_WIN_SET(vop, win, dsp_info, dsp_info);
VOP_WIN_SET(vop, win, dsp_st, dsp_st);
- rb_swap = has_rb_swapped(fb->format->format);
+ rb_swap = has_rb_swapped(vop->data->version, fb->format->format);
VOP_WIN_SET(vop, win, rb_swap, rb_swap);
/*
