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drm/nouveau: Introduce NvPmEnableGating option 

This adds the NvPmEnableGating config option to nouveau, which can be
used to enable or disable clockgating for supported chipsets. Enabling
can be done by passing

	config=NvPmEnableGating=1

To nouveau. If your chipset supports it, you'll see a message in your
kernel log indicating that clockgating is enabled. Since clockgating has
only had limited testing thus far, we leave this option disabled by
default for now.

Signed-off-by: Lyude Paul <lyude@redhat.com>
Reviewed-by: Martin Peres <martin.peres@free.fr>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
Lyude Paul 2018-02-01 13:13:59 -05:00 committed by Ben Skeggs
parent a0f79082bd
commit 3ea74559d8
1 changed files with 3 additions and 1 deletions
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4
drivers/gpu/drm/nouveau/nvkm/subdev/therm/base.c
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@ -434,7 +434,9 @@ nvkm_therm_ctor(struct nvkm_therm *therm, struct nvkm_device *device,
therm->attr_get = nvkm_therm_attr_get; therm->attr_get = nvkm_therm_attr_get;
therm->attr_set = nvkm_therm_attr_set; therm->attr_set = nvkm_therm_attr_set;
therm->mode = therm->suspend = -1; /* undefined */ therm->mode = therm->suspend = -1; /* undefined */
therm->clkgating_enabled = false;
therm->clkgating_enabled = nvkm_boolopt(device->cfgopt,
"NvPmEnableGating", false);
} }
int int