i2c-designware-core.h

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/*
 * Synopsys DesignWare I2C adapter driver (master only).
 *
 * Based on the TI DAVINCI I2C adapter driver.
 *
 * Copyright (C) 2006 Texas Instruments.
 * Copyright (C) 2007 MontaVista Software Inc.
 * Copyright (C) 2009 Provigent Ltd.
 *
 * ----------------------------------------------------------------------------
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 * ----------------------------------------------------------------------------
 *
 */


#define DW_IC_CON_MASTER        0x1
#define DW_IC_CON_SPEED_STD     0x2
#define DW_IC_CON_SPEED_FAST        0x4
#define DW_IC_CON_10BITADDR_MASTER  0x10
#define DW_IC_CON_RESTART_EN        0x20
#define DW_IC_CON_SLAVE_DISABLE     0x40


struct dw_i2c_dev {
    struct device       *dev;
    void __iomem        *base;
    struct completion   cmd_complete;
    struct mutex        lock;
    struct clk      *clk;
    u32         (*get_clk_rate_khz) (struct dw_i2c_dev *dev);
    struct dw_pci_controller *controller;
    int         cmd_err;
    struct i2c_msg      *msgs;
    int         msgs_num;
    int         msg_write_idx;
    u32         tx_buf_len;
    u8          *tx_buf;
    int         msg_read_idx;
    u32         rx_buf_len;
    u8          *rx_buf;
    int         msg_err;
    unsigned int        status;
    u32         abort_source;
    int         irq;
    u32         accessor_flags;
    struct i2c_adapter  adapter;
    u32         functionality;
    u32         master_cfg;
    unsigned int        tx_fifo_depth;
    unsigned int        rx_fifo_depth;
};

#define ACCESS_SWAP     0x00000001
#define ACCESS_16BIT        0x00000002

extern u32 dw_readl(struct dw_i2c_dev *dev, int offset);
extern void dw_writel(struct dw_i2c_dev *dev, u32 b, int offset);
extern int i2c_dw_init(struct dw_i2c_dev *dev);
extern int i2c_dw_xfer(struct i2c_adapter *adap, struct i2c_msg msgs[],
        int num);
extern u32 i2c_dw_func(struct i2c_adapter *adap);
extern irqreturn_t i2c_dw_isr(int this_irq, void *dev_id);
extern void i2c_dw_enable(struct dw_i2c_dev *dev);
extern u32 i2c_dw_is_enabled(struct dw_i2c_dev *dev);
extern void i2c_dw_disable(struct dw_i2c_dev *dev);
extern void i2c_dw_clear_int(struct dw_i2c_dev *dev);
extern void i2c_dw_disable_int(struct dw_i2c_dev *dev);
extern u32 i2c_dw_read_comp_param(struct dw_i2c_dev *dev);