Commit c599dd4b authored by Alexandre Courbot's avatar Alexandre Courbot Committed by Ben Skeggs
Browse files

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: default avatarAlexandre Courbot <acourbot@nvidia.com>
Signed-off-by: default avatarBen Skeggs <bskeggs@redhat.com>
parent c1fcb148

drivers/gpu/drm/nouveau/include/nvkm/subdev/mc.h

+1 −0
Original line number Diff line number Diff line
@@ -9,6 +9,7 @@ struct nvkm_mc { 


void nvkm_mc_enable(struct nvkm_device *, enum nvkm_devidx);

void nvkm_mc_disable(struct nvkm_device *, enum nvkm_devidx);

bool nvkm_mc_enabled(struct nvkm_device *, enum nvkm_devidx);

void nvkm_mc_reset(struct nvkm_device *, enum nvkm_devidx);

void nvkm_mc_intr(struct nvkm_device *, bool *handled);

void nvkm_mc_intr_unarm(struct nvkm_device *);

drivers/gpu/drm/nouveau/nvkm/subdev/mc/base.c

+10 −0
Original line number Diff line number Diff line
@@ -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)

{

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