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drm/nouveau/aux: mask off higher bits of auxch index in i2c table entry
author
Ben Skeggs
<bskeggs@redhat.com>
Fri, 27 Jul 2012 04:18:03 +0000
(14:18 +1000)
committer
Ben Skeggs
<bskeggs@redhat.com>
Mon, 13 Aug 2012 23:36:50 +0000
(09:36 +1000)
At least partially fixes DP output detection on W530. Not sure if more
issues remain, or if my adaptor is just behaving weirdly (it does that
sometimes).
In any case, this patch is necessary.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
drivers/gpu/drm/nouveau/nouveau_i2c.c
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diff --git
a/drivers/gpu/drm/nouveau/nouveau_i2c.c
b/drivers/gpu/drm/nouveau/nouveau_i2c.c
index
77e5646
..
240cf96
100644
(file)
--- a/
drivers/gpu/drm/nouveau/nouveau_i2c.c
+++ b/
drivers/gpu/drm/nouveau/nouveau_i2c.c
@@
-229,7
+229,7
@@
nouveau_i2c_init(struct drm_device *dev)
}
break;
case 6: /* NV50- DP AUX */
- port->drive = entry[0];
+ port->drive = entry[0]
& 0x0f
;
port->sense = port->drive;
port->adapter.algo = &nouveau_dp_i2c_algo;
break;