linux/drivers/gpu/drm/nouveau/nvkm/subdev/clk/nv40.c

/*
 * Copyright 2012 Red Hat Inc.
 *
 * 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 COPYRIGHT HOLDER(S) OR AUTHOR(S) 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.
 *
 * Authors: Ben Skeggs
 */
#define nv40_clk(p) …
#include "priv.h"
#include "pll.h"

#include <subdev/bios.h>
#include <subdev/bios/pll.h>

struct nv40_clk { … };

static u32
read_pll_1(struct nv40_clk *clk, u32 reg)
{ … }

static u32
read_pll_2(struct nv40_clk *clk, u32 reg)
{ … }

static u32
read_clk(struct nv40_clk *clk, u32 src)
{ … }

static int
nv40_clk_read(struct nvkm_clk *base, enum nv_clk_src src)
{ … }

static int
nv40_clk_calc_pll(struct nv40_clk *clk, u32 reg, u32 khz,
		  int *N1, int *M1, int *N2, int *M2, int *log2P)
{ … }

static int
nv40_clk_calc(struct nvkm_clk *base, struct nvkm_cstate *cstate)
{ … }

static int
nv40_clk_prog(struct nvkm_clk *base)
{ … }

static void
nv40_clk_tidy(struct nvkm_clk *obj)
{ … }

static const struct nvkm_clk_func
nv40_clk = …;

int
nv40_clk_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst,
	     struct nvkm_clk **pclk)
{ … }