| Message ID | 3d3bd0f7-c150-2479-9350-35d394ee772d@xs4all.nl |
|---|---|
| State | New |
| Headers | show |
| Series |
"drm/nouveau: hdmigv100.c: fix corrupted HDMI Vendor InfoFrame"
( rev:
1
)
in
DRI devel |
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/disp/hdmigv100.c b/drivers/gpu/drm/nouveau/nvkm/engine/disp/hdmigv100.c index 6e3c450eaace..3ff49344abc7 100644 --- a/drivers/gpu/drm/nouveau/nvkm/engine/disp/hdmigv100.c +++ b/drivers/gpu/drm/nouveau/nvkm/engine/disp/hdmigv100.c @@ -62,7 +62,6 @@ gv100_hdmi_ctrl(struct nvkm_ior *ior, int head, bool enable, u8 max_ac_packet, nvkm_wr32(device, 0x6f0108 + hdmi, vendor_infoframe.header); nvkm_wr32(device, 0x6f010c + hdmi, vendor_infoframe.subpack0_low); nvkm_wr32(device, 0x6f0110 + hdmi, vendor_infoframe.subpack0_high); - nvkm_wr32(device, 0x6f0110 + hdmi, 0x00000000); nvkm_wr32(device, 0x6f0114 + hdmi, 0x00000000); nvkm_wr32(device, 0x6f0118 + hdmi, 0x00000000); nvkm_wr32(device, 0x6f011c + hdmi, 0x00000000);
On Thu, 11 Nov 2021 at 01:43, Hans Verkuil <hverkuil-cisco@xs4all.nl> wrote: > > gv100_hdmi_ctrl() writes vendor_infoframe.subpack0_high to 0x6f0110, and > then overwrites it with 0. Just drop the overwrite with 0, that's clearly > a mistake. > > Because of this issue the HDMI VIC is 0 instead of 1 in the HDMI Vendor > InfoFrame when transmitting 4kp30. > > Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> > Fixes: 290ffeafcc1a (drm/nouveau/disp/gv100: initial support) Reviewed-by: Ben Skeggs <bskeggs@redhat.com> > --- > diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/disp/hdmigv100.c b/drivers/gpu/drm/nouveau/nvkm/engine/disp/hdmigv100.c > index 6e3c450eaace..3ff49344abc7 100644 > --- a/drivers/gpu/drm/nouveau/nvkm/engine/disp/hdmigv100.c > +++ b/drivers/gpu/drm/nouveau/nvkm/engine/disp/hdmigv100.c > @@ -62,7 +62,6 @@ gv100_hdmi_ctrl(struct nvkm_ior *ior, int head, bool enable, u8 max_ac_packet, > nvkm_wr32(device, 0x6f0108 + hdmi, vendor_infoframe.header); > nvkm_wr32(device, 0x6f010c + hdmi, vendor_infoframe.subpack0_low); > nvkm_wr32(device, 0x6f0110 + hdmi, vendor_infoframe.subpack0_high); > - nvkm_wr32(device, 0x6f0110 + hdmi, 0x00000000); > nvkm_wr32(device, 0x6f0114 + hdmi, 0x00000000); > nvkm_wr32(device, 0x6f0118 + hdmi, 0x00000000); > nvkm_wr32(device, 0x6f011c + hdmi, 0x00000000); >
gv100_hdmi_ctrl() writes vendor_infoframe.subpack0_high to 0x6f0110, and then overwrites it with 0. Just drop the overwrite with 0, that's clearly a mistake. Because of this issue the HDMI VIC is 0 instead of 1 in the HDMI Vendor InfoFrame when transmitting 4kp30. Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Fixes: 290ffeafcc1a (drm/nouveau/disp/gv100: initial support) ---