linux/drivers/gpu/drm/nouveau/nvkm/subdev/volt/gk20a.c

/*
 * 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"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 * DEALINGS IN THE SOFTWARE.
 */
#define gk20a_volt(p) …
#include "priv.h"

#include <core/tegra.h>

#include "gk20a.h"

static const struct cvb_coef gk20a_cvb_coef[] = …;

/*
 * cvb_mv = ((c2 * speedo / s_scale + c1) * speedo / s_scale + c0)
 */
static inline int
gk20a_volt_get_cvb_voltage(int speedo, int s_scale, const struct cvb_coef *coef)
{ … }

/*
 * cvb_t_mv =
 * ((c2 * speedo / s_scale + c1) * speedo / s_scale + c0) +
 * ((c3 * speedo / s_scale + c4 + c5 * T / t_scale) * T / t_scale)
 */
static inline int
gk20a_volt_get_cvb_t_voltage(int speedo, int temp, int s_scale, int t_scale,
			     const struct cvb_coef *coef)
{ … }

static int
gk20a_volt_calc_voltage(const struct cvb_coef *coef, int speedo)
{ … }

static int
gk20a_volt_vid_get(struct nvkm_volt *base)
{ … }

static int
gk20a_volt_vid_set(struct nvkm_volt *base, u8 vid)
{ … }

static int
gk20a_volt_set_id(struct nvkm_volt *base, u8 id, int condition)
{ … }

static const struct nvkm_volt_func
gk20a_volt = …;

int
gk20a_volt_ctor(struct nvkm_device *device, enum nvkm_subdev_type type, int inst,
		const struct cvb_coef *coefs, int nb_coefs,
		int vmin, struct gk20a_volt *volt)
{ … }

int
gk20a_volt_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst, struct nvkm_volt **pvolt)
{ … }