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drm/nouveau/volt/gk20a: split constructor

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Split the constructor function so we can reuse the same logic in other
chips.

Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
Alexandre Courbot 2016-02-12 17:44:21 +09:00 committed by Ben Skeggs
parent 0f9520931e
commit 4158c9c2bf
2 changed files with 25 additions and 12 deletions
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33
drivers/gpu/drm/nouveau/nvkm/subdev/volt/gk20a.c
View file

@ -1,5 +1,5 @@
/*
* Copyright (c) 2014, NVIDIA CORPORATION. All rights reserved.
* Copyright (c) 2014-2016, NVIDIA CORPORATION. All rights reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
@ -143,30 +143,25 @@ gk20a_volt = {
};
int
gk20a_volt_new(struct nvkm_device *device, int index, struct nvkm_volt **pvolt)
_gk20a_volt_ctor(struct nvkm_device *device, int index,
const struct cvb_coef *coefs, int nb_coefs,
struct gk20a_volt *volt)
{
struct nvkm_device_tegra *tdev = device->func->tegra(device);
struct gk20a_volt *volt;
int i, uv;
if (!(volt = kzalloc(sizeof(*volt), GFP_KERNEL)))
return -ENOMEM;
nvkm_volt_ctor(&gk20a_volt, device, index, &volt->base);
*pvolt = &volt->base;
uv = regulator_get_voltage(tdev->vdd);
nvkm_info(&volt->base.subdev, "The default voltage is %duV\n", uv);
nvkm_debug(&volt->base.subdev, "the default voltage is %duV\n", uv);
volt->vdd = tdev->vdd;
volt->base.vid_nr = ARRAY_SIZE(gk20a_cvb_coef);
nvkm_debug(&volt->base.subdev, "%s - vid_nr = %d\n", __func__,
volt->base.vid_nr);
volt->base.vid_nr = nb_coefs;
for (i = 0; i < volt->base.vid_nr; i++) {
volt->base.vid[i].vid = i;
volt->base.vid[i].uv =
gk20a_volt_calc_voltage(&gk20a_cvb_coef[i],
gk20a_volt_calc_voltage(&coefs[i],
tdev->gpu_speedo);
nvkm_debug(&volt->base.subdev, "%2d: vid=%d, uv=%d\n", i,
volt->base.vid[i].vid, volt->base.vid[i].uv);
@ -174,3 +169,17 @@ gk20a_volt_new(struct nvkm_device *device, int index, struct nvkm_volt **pvolt)
return 0;
}
int
gk20a_volt_new(struct nvkm_device *device, int index, struct nvkm_volt **pvolt)
{
struct gk20a_volt *volt;
volt = kzalloc(sizeof(*volt), GFP_KERNEL);
if (!volt)
return -ENOMEM;
*pvolt = &volt->base;
return _gk20a_volt_ctor(device, index, gk20a_cvb_coef,
ARRAY_SIZE(gk20a_cvb_coef), volt);
}

4
drivers/gpu/drm/nouveau/nvkm/subdev/volt/gk20a.h
View file

@ -37,6 +37,10 @@ struct gk20a_volt {
struct regulator *vdd;
};
int _gk20a_volt_ctor(struct nvkm_device *device, int index,
const struct cvb_coef *coefs, int nb_coefs,
struct gk20a_volt *volt);
int gk20a_volt_calc_voltage(const struct cvb_coef *coef, int speedo);
int gk20a_volt_vid_get(struct nvkm_volt *volt);
int gk20a_volt_vid_set(struct nvkm_volt *volt, u8 vid);