The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/mips/mediatek/mtk_spi_v1.h

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    1 /*-
    2  * Copyright (c) 2009, Oleksandr Tymoshenko <gonzo@FreeBSD.org>
    3  * Copyright (c) 2011, Aleksandr Rybalko <ray@FreeBSD.org>
    4  * Copyright (c) 2013, Alexander A. Mityaev <sansan@adm.ua>
    5  * Copyright (c) 2016, Stanislav Galabov <sgalabov@gmail.com>
    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 unmodified, this list of conditions, and the following
   13  *    disclaimer.
   14  * 2. Redistributions in binary form must reproduce the above copyright
   15  *    notice, this list of conditions and the following disclaimer in the
   16  *    documentation and/or other materials provided with the distribution.
   17  *
   18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   19  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   20  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   21  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   22  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   23  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   24  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   25  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   26  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   27  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   28  * SUCH DAMAGE.
   29  *
   30  * $FreeBSD: stable/12/sys/mips/mediatek/mtk_spi_v1.h 297671 2016-04-07 11:21:42Z sgalabov $
   31  */
   32 
   33 #ifndef _MTK_SPIVAR_H_
   34 #define _MTK_SPIVAR_H_
   35 
   36 /* SPI controller interface */
   37 
   38 #define MTK_SPISTAT             0x00
   39 /* SPIBUSY is alias for SPIBUSY, because SPISTAT have only BUSY bit*/
   40 #define MTK_SPIBUSY             MTK_SPISTAT
   41 
   42 #define MTK_SPICFG              0x10
   43 #define         MSBFIRST                (1<<8)
   44 #define         SPICLKPOL               (1<<6)
   45 #define         CAPT_ON_CLK_FALL        (1<<5)
   46 #define         TX_ON_CLK_FALL          (1<<4)
   47 #define         HIZSPI                  (1<<3)  /* Set SPI pins to Tri-state */
   48 #define         SPI_CLK_SHIFT           0       /* SPI clock divide control */
   49 #define         SPI_CLK_MASK            0x00000007
   50 #define         SPI_CLK_DIV2            0
   51 #define         SPI_CLK_DIV4            1
   52 #define         SPI_CLK_DIV8            2
   53 #define         SPI_CLK_DIV16           3
   54 #define         SPI_CLK_DIV32           4
   55 #define         SPI_CLK_DIV64           5
   56 #define         SPI_CLK_DIV128          6
   57 #define         SPI_CLK_DISABLED        7
   58 
   59 #define MTK_SPICTL              0x14
   60 #define         HIZSMOSI                (1<<3)
   61 #define         START_WRITE             (1<<2)
   62 #define         START_READ              (1<<1)
   63 #define         CS_HIGH                 (1<<0)
   64 
   65 #define MTK_SPIDATA             0x20
   66 #define         SPIDATA_MASK            0x000000ff
   67 
   68 #define MTK_SPI_WRITE           1
   69 #define MTK_SPI_READ            0
   70 
   71 #endif /* _MTK_SPIVAR_H_ */

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