twsi.h

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    1 /*-
    2  * Copyright (C) 2008 MARVELL INTERNATIONAL LTD.
    3  * All rights reserved.
    4  *
    5  * Developed by Semihalf.
    6  *
    7  * Redistribution and use in source and binary forms, with or without
    8  * modification, are permitted provided that the following conditions
    9  * are met:
   10  * 1. Redistributions of source code must retain the above copyright
   11  *    notice, this list of conditions and the following disclaimer.
   12  * 2. Redistributions in binary form must reproduce the above copyright
   13  *    notice, this list of conditions and the following disclaimer in the
   14  *    documentation and/or other materials provided with the distribution.
   15  * 3. Neither the name of MARVELL nor the names of contributors
   16  *    may be used to endorse or promote products derived from this software
   17  *    without specific prior written permission.
   18  *
   19  * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   22  * ARE DISCLAIMED.  IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
   23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   29  * SUCH DAMAGE.
   30  *
   31  * $FreeBSD$
   32  */
   33 
   34 #ifndef _TWSI_H_
   35 #define _TWSI_H_
   36 
   37 #include <dev/extres/clk/clk.h>
   38 
   39 struct twsi_baud_rate {
   40         uint32_t        raw;
   41         int             param;
   42         int             m;
   43         int             n;
   44 };
   45 
   46 struct twsi_softc {
   47         device_t        dev;
   48         struct resource *res[2];
   49         struct mtx      mutex;
   50         device_t        iicbus;
   51         clk_t           clk_core;
   52         clk_t           clk_reg;
   53         void *                  intrhand;
   54         bool                    have_intr;
   55 
   56         struct iic_msg          *msgs;
   57         uint32_t                nmsgs;
   58         uint32_t                msg_idx;
   59         uint16_t                sent_bytes;
   60         uint16_t                recv_bytes;
   61         int                     transfer;
   62         int                     error;
   63         int                     debug;
   64         uint32_t                control_val;
   65         bool                    iflag_w1c;
   66 
   67         bus_size_t      reg_data;
   68         bus_size_t      reg_slave_addr;
   69         bus_size_t      reg_slave_ext_addr;
   70         bus_size_t      reg_control;
   71         bus_size_t      reg_status;
   72         bus_size_t      reg_baud_rate;
   73         bus_size_t      reg_soft_reset;
   74         struct twsi_baud_rate  baud_rate[IIC_FASTEST + 1];
   75 };
   76 
   77 DECLARE_CLASS(twsi_driver);
   78 
   79 #define TWSI_BAUD_RATE_PARAM(M,N)       ((((M) << 3) | ((N) & 0x7)) & 0x7f)
   80 
   81 int twsi_attach(device_t);
   82 int twsi_detach(device_t);
   83 
   84 #endif /* _TWSI_H_ */

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FreeBSD/Linux Kernel Cross Reference sys/dev/iicbus/twsi/twsi.h

FreeBSD/Linux Kernel Cross Reference
sys/dev/iicbus/twsi/twsi.h