drm/nouveau/pwr: add support for GK20A

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This patch adds PWR support for GK20A. But instead of adding the PWR
features like firmware loading and communication with PMU firmware, we
add the DVFS (Dynamic Voltage and Frequency Scaling), which is one of
the PMU firmware's jobs on dGPUs, in this patch. This refers to the
idle signals provided by the NVIDIA hardware and tries to adjust the
performance level based on the calculated target. The reclocking policy
can be fine-tuned later when we have more real use cases.

Signed-off-by: Vince Hsu <vinceh@nvidia.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

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Vince Hsu 2014-12-22 17:11:39 +08:00 • committed by Ben Skeggs

parent 47e7df39d9

commit 9f7fd620af

4 changed files with 235 additions and 0 deletions

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1

drivers/gpu/drm/nouveau/Makefile

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1

drivers/gpu/drm/nouveau/core/engine/device/nve0.c

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1

drivers/gpu/drm/nouveau/core/include/subdev/pwr.h

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232

drivers/gpu/drm/nouveau/core/subdev/pwr/gk20a.c

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