a27af5b395
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.
67 lines
2.6 KiB
C
67 lines
2.6 KiB
C
/*
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* Copyright (C) 2015, Intel Corporation. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* 3. Neither the name of the copyright holder nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef CPU_X86_DRIVERS_QUARKX1000_I2C_H_
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#define CPU_X86_DRIVERS_QUARKX1000_I2C_H_
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#include "pci.h"
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typedef enum {
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QUARKX1000_I2C_SPEED_STANDARD,
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QUARKX1000_I2C_SPEED_FAST
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} QUARKX1000_I2C_SPEED;
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typedef enum {
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QUARKX1000_I2C_ADDR_MODE_7BIT,
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QUARKX1000_I2C_ADDR_MODE_10BIT
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} QUARKX1000_I2C_ADDR_MODE;
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typedef void (*quarkX1000_i2c_callback)(void);
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struct quarkX1000_i2c_config {
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QUARKX1000_I2C_SPEED speed;
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QUARKX1000_I2C_ADDR_MODE addressing_mode;
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quarkX1000_i2c_callback cb_rx;
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quarkX1000_i2c_callback cb_tx;
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quarkX1000_i2c_callback cb_err;
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};
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int quarkX1000_i2c_init(void);
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int quarkX1000_i2c_configure(struct quarkX1000_i2c_config *config);
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int quarkX1000_i2c_is_available(void);
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int quarkX1000_i2c_read(uint8_t *buf, uint8_t len, uint16_t addr);
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int quarkX1000_i2c_write(uint8_t *buf, uint8_t len, uint16_t addr);
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int quarkX1000_i2c_polling_read(uint8_t *buf, uint8_t len, uint16_t addr);
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int quarkX1000_i2c_polling_write(uint8_t *buf, uint8_t len, uint16_t addr);
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#endif /* CPU_X86_DRIVERS_QUARKX1000_I2C_H_ */
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