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drm/nouveau/pmu/gk104: check fuse to determine presence of PGOB 

Not 100% confirmed, but seems to match from the few boards I've looked
at so far.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
Ben Skeggs 2015-10-01 14:58:04 +10:00
parent 779d16aacc
commit 560f989fe4
1 changed files with 4 additions and 0 deletions
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4
drivers/gpu/drm/nouveau/nvkm/subdev/pmu/gk104.c
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@ -27,6 +27,7 @@
#include "fuc/gf119.fuc4.h" #include "fuc/gf119.fuc4.h"
#include <core/option.h> #include <core/option.h>
#include <subdev/fuse.h>
#include <subdev/timer.h> #include <subdev/timer.h>
static void static void
@ -57,6 +58,9 @@ gk104_pmu_pgob(struct nvkm_pmu *pmu, bool enable)
{ {
struct nvkm_device *device = pmu->subdev.device; struct nvkm_device *device = pmu->subdev.device;
if (!(nvkm_fuse_read(device->fuse, 0x31c) & 0x00000001))
return;
nvkm_mask(device, 0x000200, 0x00001000, 0x00000000); nvkm_mask(device, 0x000200, 0x00001000, 0x00000000);
nvkm_rd32(device, 0x000200); nvkm_rd32(device, 0x000200);
nvkm_mask(device, 0x000200, 0x08000000, 0x08000000); nvkm_mask(device, 0x000200, 0x08000000, 0x08000000);