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drm/rockchip: vop: reset scale mode when win is disabled 

NV12 framebuffers produced by the VPU shows distorted on RK3288
after win has been disabled when scaling is active.

This issue can be reproduced using a 1080p modeset by:
- Scale a 1280x720 NV12 framebuffer to 1920x1080 on win0
- Disable win0
- Display a 1920x1080 NV12 framebuffer without scaling on win0
- Output will now show the framebuffer distorted

And by:
- Scale a 1280x720 NV12 framebuffer to 1920x1080
- Change to a 720p modeset (win gets disabled and scaling reset to none)
- Output will now show the framebuffer distorted

Fix this by setting scale mode to none when win is disabled.

Fixes: 4c156c21c7 ("drm/rockchip: vop: support plane scale")
Cc: stable@vger.kernel.org
Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Link: https://patchwork.freedesktop.org/patch/msgid/AM3PR03MB0966DE3E19BACE07328CD637AC7D0@AM3PR03MB0966.eurprd03.prod.outlook.com
This commit is contained in:
Jonas Karlman 2019-02-20 22:40:06 +00:00 committed by Heiko Stuebner
parent 36b6c9ed45
commit e9abc611a9
1 changed files with 15 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
drivers/gpu/drm/rockchip/rockchip_drm_vop.c
View File

@ -541,6 +541,18 @@ static void vop_core_clks_disable(struct vop *vop)
clk_disable(vop->hclk);
}
static void vop_win_disable(struct vop *vop, const struct vop_win_data *win)
{
if (win->phy->scl && win->phy->scl->ext) {
VOP_SCL_SET_EXT(vop, win, yrgb_hor_scl_mode, SCALE_NONE);
VOP_SCL_SET_EXT(vop, win, yrgb_ver_scl_mode, SCALE_NONE);
VOP_SCL_SET_EXT(vop, win, cbcr_hor_scl_mode, SCALE_NONE);
VOP_SCL_SET_EXT(vop, win, cbcr_ver_scl_mode, SCALE_NONE);
}
VOP_WIN_SET(vop, win, enable, 0);
}
static int vop_enable(struct drm_crtc *crtc)
{
struct vop *vop = to_vop(crtc);
@ -586,7 +598,7 @@ static int vop_enable(struct drm_crtc *crtc)
struct vop_win *vop_win = &vop->win[i];
const struct vop_win_data *win = vop_win->data;
VOP_WIN_SET(vop, win, enable, 0);
vop_win_disable(vop, win);
}
spin_unlock(&vop->reg_lock);
@ -735,7 +747,7 @@ static void vop_plane_atomic_disable(struct drm_plane *plane,
spin_lock(&vop->reg_lock);
VOP_WIN_SET(vop, win, enable, 0);
vop_win_disable(vop, win);
spin_unlock(&vop->reg_lock);
}
@ -1622,7 +1634,7 @@ static int vop_initial(struct vop *vop)
int channel = i * 2 + 1;
VOP_WIN_SET(vop, win, channel, (channel + 1) << 4 | channel);
VOP_WIN_SET(vop, win, enable, 0);
vop_win_disable(vop, win);
VOP_WIN_SET(vop, win, gate, 1);
}