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i2c.h

/*
 * Copyright (C) 2009 ST-Ericsson
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2, as
 * published by the Free Software Foundation.
 */
#ifndef __PLAT_I2C_H
#define __PLAT_I2C_H

enum i2c_freq_mode {
      I2C_FREQ_MODE_STANDARD,       /* up to 100 Kb/s */
      I2C_FREQ_MODE_FAST,           /* up to 400 Kb/s */
      I2C_FREQ_MODE_FAST_PLUS,      /* up to 1 Mb/s */
      I2C_FREQ_MODE_HIGH_SPEED      /* up to 3.4 Mb/s */
};

/**
 * struct nmk_i2c_controller - client specific controller configuration
 * @clk_freq:     clock frequency for the operation mode
 * @slsu:   Slave data setup time in ns.
 *          The needed setup time for three modes of operation
 *          are 250ns, 100ns and 10ns respectively thus leading
 *          to the values of 14, 6, 2 for a 48 MHz i2c clk
 * @tft:    Tx FIFO Threshold in bytes
 * @rft:    Rx FIFO Threshold in bytes
 * @sm:           speed mode
 */
00029 struct nmk_i2c_controller {
      unsigned long     clk_freq;
      unsigned short    slsu;
      unsigned char     tft;
      unsigned char     rft;
      enum i2c_freq_mode      sm;
};

#endif      /* __PLAT_I2C_H */

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