/*
 * Copyright (c) 2006, 2013, Oracle and/or its affiliates. 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 (including the next
 * paragraph) 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.
 */

/*
 * Copyright (c) 2012 Intel Corporation.  All rights reserved.
 */

#ifndef __DRM_I2C_H__
#define __DRM_I2C_H__

#include <sys/ksynch.h>
#include <sys/types.h>
#include <sys/errno.h>
#include <sys/cmn_err.h>
#include "drm.h"

struct i2c_adapter;
struct i2c_msg;

struct i2c_algorithm {
	int (*master_xfer)(struct i2c_adapter *adap, struct i2c_msg *msgs, int num);
	u32 (*functionality) (struct i2c_adapter *);
};

extern struct i2c_algorithm i2c_bit_algo;

struct i2c_adapter {
	struct i2c_algorithm *algo;
	kmutex_t bus_lock;
	clock_t timeout;
	int retries;
	char name[64];
	void *data;
	void (*setsda) (void *data, int state);
	void (*setscl) (void *data, int state);
	int  (*getsda) (void *data);
	int  (*getscl) (void *data);
	void *algo_data;       
	clock_t udelay;
};

#define I2C_M_RD		0x01
#define I2C_M_NOSTART		0x02

struct i2c_msg {
	u16 addr;
	u16 flags;
	u16 len;
	u8 *buf;
};

extern int i2c_transfer(struct i2c_adapter *adap, struct i2c_msg *msgs, int num);
extern int i2c_bit_add_bus(struct i2c_adapter *adap);

#endif /* __DRM_I2C_H__ */