linux/drivers/gpu/drm/nouveau/nvkm/subdev/i2c/bus.c

/*
 * Copyright 2015 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 <[email protected]>
 */
#include "bus.h"
#include "pad.h"

#include <core/option.h>

/*******************************************************************************
 * i2c-algo-bit
 ******************************************************************************/
static int
nvkm_i2c_bus_pre_xfer(struct i2c_adapter *adap)
{ … }

static void
nvkm_i2c_bus_post_xfer(struct i2c_adapter *adap)
{ … }

static void
nvkm_i2c_bus_setscl(void *data, int state)
{ … }

static void
nvkm_i2c_bus_setsda(void *data, int state)
{ … }

static int
nvkm_i2c_bus_getscl(void *data)
{ … }

static int
nvkm_i2c_bus_getsda(void *data)
{ … }

/*******************************************************************************
 * !i2c-algo-bit (off-chip i2c bus / hw i2c / internal bit-banging algo)
 ******************************************************************************/
static int
nvkm_i2c_bus_xfer(struct i2c_adapter *adap, struct i2c_msg *msgs, int num)
{ … }

static u32
nvkm_i2c_bus_func(struct i2c_adapter *adap)
{ … }

static const struct i2c_algorithm
nvkm_i2c_bus_algo = …;

/*******************************************************************************
 * nvkm_i2c_bus base
 ******************************************************************************/
void
nvkm_i2c_bus_init(struct nvkm_i2c_bus *bus)
{ … }

void
nvkm_i2c_bus_fini(struct nvkm_i2c_bus *bus)
{ … }

void
nvkm_i2c_bus_release(struct nvkm_i2c_bus *bus)
{ … }

int
nvkm_i2c_bus_acquire(struct nvkm_i2c_bus *bus)
{ … }

int
nvkm_i2c_bus_probe(struct nvkm_i2c_bus *bus, const char *what,
		   struct nvkm_i2c_bus_probe *info,
		   bool (*match)(struct nvkm_i2c_bus *,
				 struct i2c_board_info *, void *), void *data)
{ … }

void
nvkm_i2c_bus_del(struct nvkm_i2c_bus **pbus)
{ … }

int
nvkm_i2c_bus_ctor(const struct nvkm_i2c_bus_func *func,
		  struct nvkm_i2c_pad *pad, int id,
		  struct nvkm_i2c_bus *bus)
{ … }

int
nvkm_i2c_bus_new_(const struct nvkm_i2c_bus_func *func,
		  struct nvkm_i2c_pad *pad, int id,
		  struct nvkm_i2c_bus **pbus)
{ … }