FreeBSD/Linux Kernel Cross Reference
sys/sys/spigenio.h

     /*-
      * Copyright (c) 2000 Doug Rabson
      * All rights reserved.
      *
      * 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.
     *
     * THIS SOFTWARE IS PROVIDED BY THE 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 THE 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.
     *
     *      $FreeBSD$
     */
    
    #ifndef _SYS_SPIGENIO_H_
    #define _SYS_SPIGENIO_H_
    
    #include <sys/_iovec.h>
    
    struct spigen_transfer {
            struct iovec st_command; /* master to slave */
            struct iovec st_data;    /* slave to master and/or master to slave */
    };
    
    struct spigen_transfer_mmapped {
            size_t stm_command_length; /* at offset 0 in mmap(2) area */
            size_t stm_data_length;    /* at offset stm_command_length */
    };
    
    #define SPIGENIOC_BASE     'S'
    #define SPIGENIOC_TRANSFER         _IOW(SPIGENIOC_BASE, 0, \
                struct spigen_transfer)
    #define SPIGENIOC_TRANSFER_MMAPPED _IOW(SPIGENIOC_BASE, 1, \
                struct spigen_transfer_mmapped)
    #define SPIGENIOC_GET_CLOCK_SPEED  _IOR(SPIGENIOC_BASE, 2, uint32_t)
    #define SPIGENIOC_SET_CLOCK_SPEED  _IOW(SPIGENIOC_BASE, 3, uint32_t)
    #define SPIGENIOC_GET_SPI_MODE     _IOR(SPIGENIOC_BASE, 4, uint32_t)
    #define SPIGENIOC_SET_SPI_MODE     _IOW(SPIGENIOC_BASE, 5, uint32_t)
    
    #endif /* !_SYS_SPIGENIO_H_ */

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