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1f7f3d91ad
We should never allow to select a cstate which current voltage (depending
on the temperature) is higher than
1. the max volt entries in the voltage map table.
2. what tha gpu actually can volt to.
v3: Use find_best for all cstates before actually trying.
Add nvkm_cstate_get function to get cstate by index.
v5: Cstates with voltages lower then min_uv are valid.
Move nvkm_cstate_get into the previous commit.
Signed-off-by: Karol Herbst <karolherbst@gmail.com>
Reviewed-by: Martin Peres <martin.peres@free.fr>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
40 lines
1 KiB
C
40 lines
1 KiB
C
#ifndef __NVKM_VOLT_H__
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#define __NVKM_VOLT_H__
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#include <core/subdev.h>
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struct nvkm_volt {
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const struct nvkm_volt_func *func;
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struct nvkm_subdev subdev;
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u8 vid_mask;
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u8 vid_nr;
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struct {
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u32 uv;
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u8 vid;
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} vid[256];
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u32 max_uv;
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u32 min_uv;
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/*
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* These are fully functional map entries creating a sw ceiling for
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* the voltage. These all can describe different kind of curves, so
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* that for any given temperature a different one can return the lowest
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* value of all three.
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*/
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u8 max0_id;
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u8 max1_id;
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u8 max2_id;
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};
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int nvkm_volt_map(struct nvkm_volt *volt, u8 id, u8 temperature);
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int nvkm_volt_map_min(struct nvkm_volt *volt, u8 id);
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int nvkm_volt_get(struct nvkm_volt *);
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int nvkm_volt_set_id(struct nvkm_volt *, u8 id, u8 min_id, u8 temp,
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int condition);
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int nv40_volt_new(struct nvkm_device *, int, struct nvkm_volt **);
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int gk104_volt_new(struct nvkm_device *, int, struct nvkm_volt **);
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int gk20a_volt_new(struct nvkm_device *, int, struct nvkm_volt **);
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int gm20b_volt_new(struct nvkm_device *, int, struct nvkm_volt **);
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#endif
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