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Message-ID: <20231023211158.424489-1-jonas@kwiboo.se>
Date: Mon, 23 Oct 2023 21:11:57 +0000
From: Jonas Karlman <jonas@...boo.se>
To: Heiko Stuebner <heiko@...ech.de>, Sandy Huang <hjc@...k-chips.com>,
David Airlie <airlied@...il.com>,
Daniel Vetter <daniel@...ll.ch>
Cc: Christopher Obbard <chris.obbard@...labora.com>,
Jonas Karlman <jonas@...boo.se>,
dri-devel@...ts.freedesktop.org,
linux-arm-kernel@...ts.infradead.org,
linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH] drm/rockchip: vop: Fix color for RGB888/BGR888 format on VOP full
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@...4
modetest -s <connector_id>@<crtc_id>:1920x1080-60@...4
Vendor 4.4 kernel apply an inverted rb swap for these formats on VOP
full (major = 3).
Fix colors by applying rb swap similar to vendor 4.4 kernel.
Signed-off-by: Jonas Karlman <jonas@...boo.se>
---
drivers/gpu/drm/rockchip/rockchip_drm_vop.c | 9 ++++++---
1 file changed, 6 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
index b3d0b6ae9294..a1ce09a22f83 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
@@ -247,14 +247,17 @@ 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;
+ case DRM_FORMAT_RGB888:
+ return VOP_MAJOR(version) == 3;
+ case DRM_FORMAT_BGR888:
+ return VOP_MAJOR(version) != 3;
default:
return false;
}
@@ -1035,7 +1038,7 @@ 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);
/*
--
2.42.0
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