sys/arm/broadcom/bcm2835/bcm2835_spivar.h

   1 /*-
   2  * SPDX-License-Identifier: BSD-2-Clause
   3  *
   4  * Copyright (c) 2012 Oleksandr Tymoshenko <gonzo@freebsd.org>
   5  * Copyright (c) 2013 Luiz Otavio O Souza <loos@freebsd.org>
   6  * All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  */
  29
  30 #ifndef _BCM2835_SPIVAR_H_
  31 #define _BCM2835_SPIVAR_H_
  32
  33 struct bcm_spi_softc {
  34         device_t                sc_dev;
  35         struct mtx              sc_mtx;
  36         struct resource *       sc_mem_res;
  37         struct resource *       sc_irq_res;
  38         struct spi_command      *sc_cmd;
  39         struct thread           *sc_thread;
  40         bus_space_tag_t         sc_bst;
  41         bus_space_handle_t      sc_bsh;
  42         uint32_t                sc_len;
  43         uint32_t                sc_read;
  44         uint32_t                sc_flags;
  45         uint32_t                sc_written;
  46         void *                  sc_intrhand;
  47 };
  48
  49 #define BCM_SPI_BUSY            0x1
  50 #define BCM_SPI_KEEP_CS         0x2
  51
  52 #define BCM_SPI_WRITE(_sc, _off, _val)          \
  53     bus_space_write_4(_sc->sc_bst, _sc->sc_bsh, _off, _val)
  54 #define BCM_SPI_READ(_sc, _off)                 \
  55     bus_space_read_4(_sc->sc_bst, _sc->sc_bsh, _off)
  56
  57 #define BCM_SPI_LOCK(_sc)                       \
  58     mtx_lock(&(_sc)->sc_mtx)
  59 #define BCM_SPI_UNLOCK(_sc)                     \
  60     mtx_unlock(&(_sc)->sc_mtx)
  61
  62 #endif  /* _BCM2835_SPIVAR_H_ */