[PATCH AUTOSEL 5.7 314/388] drm/nouveau/disp/gm200-: fix NV_PDISP_SOR_HDMI2_CTRL(n) selection

Sasha Levin
2020-06-18T02:25:35Z

From: Ben Skeggs <bskeggs@redhat.com>

[ Upstream commit a1ef8bad506e4ffa0c57ac5f8cb99ab5cbc3b1fc ]

This is a SOR register, and not indexed by the bound head.

Fixes display not coming up on high-bandwidth HDMI displays under a
number of configurations.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/gpu/drm/nouveau/nvkm/engine/disp/hdmigm200.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/disp/hdmigm200.c b/drivers/gpu/drm/nouveau/nvkm/engine/disp/hdmigm200.c
index 9b16a08eb4d9..bf6d41fb0c9f 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/disp/hdmigm200.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/disp/hdmigm200.c
@@ -27,10 +27,10 @@ void
gm200_hdmi_scdc(struct nvkm_ior *ior, int head, u8 scdc)
{
struct nvkm_device *device = ior->disp->engine.subdev.device;
- const u32 hoff = head * 0x800;
+ const u32 soff = nv50_ior_base(ior);
const u32 ctrl = scdc & 0x3;

- nvkm_mask(device, 0x61c5bc + hoff, 0x00000003, ctrl);
+ nvkm_mask(device, 0x61c5bc + soff, 0x00000003, ctrl);

ior->tmds.high_speed = !!(scdc & 0x2);
}
--
2.25.1