LXR linux/drivers/gpu/drm/nouveau/nouveau

   1/*
   2 * Copyright 2009 Red Hat Inc.
   3 *
   4 * Permission is hereby granted, free of charge, to any person obtaining a
   5 * copy of this software and associated documentation files (the "Software"),
   6 * to deal in the Software without restriction, including without limitation
   7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8 * and/or sell copies of the Software, and to permit persons to whom the
   9 * Software is furnished to do so, subject to the following conditions:
  10 *
  11 * The above copyright notice and this permission notice shall be included in
  12 * all copies or substantial portions of the Software.
  13 *
  14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
  18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  20 * OTHER DEALINGS IN THE SOFTWARE.
  21 */
  22
  23#ifndef __NOUVEAU_I2C_H__
  24#define __NOUVEAU_I2C_H__
  25
  26#include <linux/i2c.h>
  27#include <linux/i2c-algo-bit.h>
  28#include "drm_dp_helper.h"
  29
  30struct dcb_i2c_entry;
  31
  32struct nouveau_i2c_chan {
  33        struct i2c_adapter adapter;
  34        struct drm_device *dev;
  35        struct i2c_algo_bit_data bit;
  36        unsigned rd;
  37        unsigned wr;
  38        unsigned data;
  39};
  40
  41int nouveau_i2c_init(struct drm_device *, struct dcb_i2c_entry *, int index);
  42void nouveau_i2c_fini(struct drm_device *, struct dcb_i2c_entry *);
  43struct nouveau_i2c_chan *nouveau_i2c_find(struct drm_device *, int index);
  44bool nouveau_probe_i2c_addr(struct nouveau_i2c_chan *i2c, int addr);
  45int nouveau_i2c_identify(struct drm_device *dev, const char *what,
  46                         struct i2c_board_info *info,
  47                         bool (*match)(struct nouveau_i2c_chan *,
  48                                       struct i2c_board_info *),
  49                         int index);
  50
  51extern const struct i2c_algorithm nouveau_dp_i2c_algo;
  52
  53#endif /* __NOUVEAU_I2C_H__ */
  54