diff options
| author | Alexandre Courbot <acourbot@nvidia.com> | 2016-12-13 17:11:18 +0900 |
|---|---|---|
| committer | Ben Skeggs <bskeggs@redhat.com> | 2017-02-17 15:14:30 +1000 |
| commit | c599dd4b70d3d8a485be6b80d8b190beb3df874b (patch) | |
| tree | d702d8b6ccde594b62fad5bb23ba5097c446dbd1 /drivers/gpu/drm/nouveau/nvkm/subdev/mc | |
| parent | c1fcb14879e87c837c360c2ec9f32d19f62faf89 (diff) | |
drm/nouveau/mc: add nvkm_mc_enabled() function
Add a function that allows us to query whether a given subdev is
currently enabled or not.
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/nouveau/nvkm/subdev/mc')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nvkm/subdev/mc/base.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/mc/base.c b/drivers/gpu/drm/nouveau/nvkm/subdev/mc/base.c index 6b25e25f9eba..09f669ac6630 100644 --- a/drivers/gpu/drm/nouveau/nvkm/subdev/mc/base.c +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/mc/base.c @@ -161,6 +161,16 @@ nvkm_mc_enable(struct nvkm_device *device, enum nvkm_devidx devidx) } } +bool +nvkm_mc_enabled(struct nvkm_device *device, enum nvkm_devidx devidx) +{ + u64 pmc_enable = nvkm_mc_reset_mask(device, false, devidx); + + return (pmc_enable != 0) && + ((nvkm_rd32(device, 0x000200) & pmc_enable) == pmc_enable); +} + + static int nvkm_mc_fini(struct nvkm_subdev *subdev, bool suspend) { |