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
30#define NV_I2C_PORT(n)    (0x00 + (n))
31#define NV_I2C_PORT_NUM    0x10
32#define NV_I2C_DEFAULT(n) (0x80 + (n))
33
34struct nouveau_i2c_chan {
35	struct i2c_adapter adapter;
36	struct drm_device *dev;
37	struct i2c_algo_bit_data bit;
38	struct list_head head;
39	u8  index;
40	u8  type;
41	u32 dcb;
42	u32 drive;
43	u32 sense;
44	u32 state;
45};
46
47int  nouveau_i2c_init(struct drm_device *);
48void nouveau_i2c_fini(struct drm_device *);
49struct nouveau_i2c_chan *nouveau_i2c_find(struct drm_device *, u8 index);
50bool nouveau_probe_i2c_addr(struct nouveau_i2c_chan *i2c, int addr);
51int nouveau_i2c_identify(struct drm_device *dev, const char *what,
52			 struct i2c_board_info *info,
53			 bool (*match)(struct nouveau_i2c_chan *,
54				       struct i2c_board_info *),
55			 int index);
56
57extern const struct i2c_algorithm nouveau_dp_i2c_algo;
58
59#endif /* __NOUVEAU_I2C_H__ */