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drm/nv50-/disp: Use output specific mask in interrupt

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   commit 476e84e126
   Author: Ben Skeggs <bskeggs@redhat.com>
   Date:   Mon Feb 11 09:24:23 2013 +1000

       drm/nv50-/disp: initial supervisor support for off-chip encoders

changed the write mask in one of the interrupt functions for on-chip encoders,
causing a regression in certain VGA dual-head setups. This commit reintroduces
the mask thus resolving the regression

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=66129
Reported-and-Tested-by: Yves-Alexis <corsac@debian.org>
Cc: stable@vger.kernel.org [3.9+]
CC: Ben Skeggs <bskeggs@redhat.com>
Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
Emil Velikov 2013-07-02 14:44:12 +01:00 committed by Ben Skeggs
parent d005f51eb9
commit 378f2bcdf7
1 changed files with 5 additions and 1 deletions
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6
drivers/gpu/drm/nouveau/core/engine/disp/nv50.c
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@ -1107,6 +1107,7 @@ nv50_disp_intr_unk20_2(struct nv50_disp_priv *priv, int head)
u32 pclk = nv_rd32(priv, 0x610ad0 + (head * 0x540)) & 0x3fffff;
u32 hval, hreg = 0x614200 + (head * 0x800);
u32 oval, oreg;
u32 mask;
u32 conf = exec_clkcmp(priv, head, 0xff, pclk, &outp);
if (conf != ~0) {
if (outp.location == 0 && outp.type == DCB_OUTPUT_DP) {
@ -1133,6 +1134,7 @@ nv50_disp_intr_unk20_2(struct nv50_disp_priv *priv, int head)
oreg = 0x614280 + (ffs(outp.or) - 1) * 0x800;
oval = 0x00000000;
hval = 0x00000000;
mask = 0xffffffff;
} else
if (!outp.location) {
if (outp.type == DCB_OUTPUT_DP)
@ -1140,14 +1142,16 @@ nv50_disp_intr_unk20_2(struct nv50_disp_priv *priv, int head)
oreg = 0x614300 + (ffs(outp.or) - 1) * 0x800;
oval = (conf & 0x0100) ? 0x00000101 : 0x00000000;
hval = 0x00000000;
mask = 0x00000707;
} else {
oreg = 0x614380 + (ffs(outp.or) - 1) * 0x800;
oval = 0x00000001;
hval = 0x00000001;
mask = 0x00000707;
}
nv_mask(priv, hreg, 0x0000000f, hval);
nv_mask(priv, oreg, 0x00000707, oval);
nv_mask(priv, oreg, mask, oval);
}
}