/*-
 * Copyright (C) 2008 MARVELL INTERNATIONAL LTD.
 * All rights reserved.
 *
 * Developed by Semihalf.
 *
 * 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 MARVELL nor the names of contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY AUTHOR 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 AUTHOR 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 _TWSI_H_
#define _TWSI_H_

#include <dev/clk/clk.h>

struct twsi_baud_rate {
        uint32_t        raw;
        int             param;
        int             m;
        int             n;
};

struct twsi_softc {
        device_t        dev;
        struct resource *res[2];
        struct mtx      mutex;
        device_t        iicbus;
        clk_t           clk_core;
        clk_t           clk_reg;
        void *                  intrhand;
        bool                    have_intr;

        struct iic_msg          *msgs;
        uint32_t                nmsgs;
        uint32_t                msg_idx;
        uint16_t                sent_bytes;
        uint16_t                recv_bytes;
        int                     transfer;
        int                     error;
        int                     debug;
        uint32_t                control_val;
        bool                    iflag_w1c;

        bus_size_t      reg_data;
        bus_size_t      reg_slave_addr;
        bus_size_t      reg_slave_ext_addr;
        bus_size_t      reg_control;
        bus_size_t      reg_status;
        bus_size_t      reg_baud_rate;
        bus_size_t      reg_soft_reset;
        struct twsi_baud_rate  baud_rate[IIC_FASTEST + 1];
};

DECLARE_CLASS(twsi_driver);

#define TWSI_BAUD_RATE_PARAM(M,N)       ((((M) << 3) | ((N) & 0x7)) & 0x7f)

int twsi_attach(device_t);
int twsi_detach(device_t);

#endif /* _TWSI_H_ */