osd-contiki/cpu/x86/drivers/quarkX1000/i2c.h
Ricardo de Almeida Gonzaga a27af5b395 x86: Add Intel Quark X1000 I2C support
This patch adds the i2c.c, i2c.h and i2c-registers.h files,
which support access to I2C controller configuration register
through a function interface.
2015-12-21 08:06:14 -02:00

68 lines
2.6 KiB
C

/*
* Copyright (C) 2015, Intel Corporation. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* 3. Neither the name of the copyright holder nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef CPU_X86_DRIVERS_QUARKX1000_I2C_H_
#define CPU_X86_DRIVERS_QUARKX1000_I2C_H_
#include "pci.h"
typedef enum {
QUARKX1000_I2C_SPEED_STANDARD,
QUARKX1000_I2C_SPEED_FAST
} QUARKX1000_I2C_SPEED;
typedef enum {
QUARKX1000_I2C_ADDR_MODE_7BIT,
QUARKX1000_I2C_ADDR_MODE_10BIT
} QUARKX1000_I2C_ADDR_MODE;
typedef void (*quarkX1000_i2c_callback)(void);
struct quarkX1000_i2c_config {
QUARKX1000_I2C_SPEED speed;
QUARKX1000_I2C_ADDR_MODE addressing_mode;
quarkX1000_i2c_callback cb_rx;
quarkX1000_i2c_callback cb_tx;
quarkX1000_i2c_callback cb_err;
};
int quarkX1000_i2c_init(void);
int quarkX1000_i2c_configure(struct quarkX1000_i2c_config *config);
int quarkX1000_i2c_is_available(void);
int quarkX1000_i2c_read(uint8_t *buf, uint8_t len, uint16_t addr);
int quarkX1000_i2c_write(uint8_t *buf, uint8_t len, uint16_t addr);
int quarkX1000_i2c_polling_read(uint8_t *buf, uint8_t len, uint16_t addr);
int quarkX1000_i2c_polling_write(uint8_t *buf, uint8_t len, uint16_t addr);
#endif /* CPU_X86_DRIVERS_QUARKX1000_I2C_H_ */