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drm/gf110-/disp: magic that might help some tmds issues

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The binary driver has been doing this since GF119, and we've somehow
gotten away with it.  But, TMDS that hasn't been initialised already
by the x86 vbios code is distorted without it on GM204.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
Ben Skeggs 2014-08-28 11:52:12 +10:00
parent c79965d8fa
commit e16cc45c7d
1 changed files with 10 additions and 2 deletions
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12
drivers/gpu/drm/nouveau/core/engine/disp/nvd0.c
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@ -1063,10 +1063,18 @@ nvd0_disp_intr_unk2_2(struct nv50_disp_priv *priv, int head)
addr = 0x612280 + (ffs(outp->info.or) - 1) * 0x800;
data = 0x00000000;
} else {
if (outp->info.type == DCB_OUTPUT_DP)
nvd0_disp_intr_unk2_2_tu(priv, head, &outp->info);
addr = 0x612300 + (ffs(outp->info.or) - 1) * 0x800;
data = (conf & 0x0100) ? 0x00000101 : 0x00000000;
switch (outp->info.type) {
case DCB_OUTPUT_TMDS:
nv_mask(priv, addr, 0x007c0000, 0x00280000);
break;
case DCB_OUTPUT_DP:
nvd0_disp_intr_unk2_2_tu(priv, head, &outp->info);
break;
default:
break;
}
}
nv_mask(priv, addr, 0x00000707, data);