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drm/nouveau/bios/iccsense: rails for power sensors have a mask of 0xf8 for version 0x10

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I only saw those values inside the vbios: 0xff, 0xfd, 0xfc, 0xfa for valid
rails.

No idea what the lower value does, but at least we get power readings on
a lot of Fermi GPUs with that.

v2: add missing parentheses

Signed-off-by: Karol Herbst <karolherbst@gmail.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
Karol Herbst 2017-04-23 20:06:37 +02:00 committed by Ben Skeggs
parent c0cd04700f
commit 4dc33b1222
1 changed files with 4 additions and 1 deletions
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5
drivers/gpu/drm/nouveau/nvkm/subdev/bios/iccsense.c
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@ -87,7 +87,10 @@ nvbios_iccsense_parse(struct nvkm_bios *bios, struct nvbios_iccsense *iccsense)
switch(ver) {
case 0x10:
rail->mode = nvbios_rd08(bios, entry + 0x1);
if ((nvbios_rd08(bios, entry + 0x1) & 0xf8) == 0xf8)
rail->mode = 1;
else
rail->mode = 0;
rail->extdev_id = nvbios_rd08(bios, entry + 0x2);
res_start = 0x3;
break;