include/asm-arm/arch-kirkwood/spi.h

   1 /*
   2  * (C) Copyright 2009
   3  * Marvell Semiconductor <www.marvell.com>
   4  * Written-by: Prafulla Wadaskar <prafulla@marvell.com>
   5  *
   6  * Derived from drivers/spi/mpc8xxx_spi.c
   7  *
   8  * See file CREDITS for list of people who contributed to this
   9  * project.
  10  *
  11  * This program is free software; you can redistribute it and/or
  12  * modify it under the terms of the GNU General Public License as
  13  * published by the Free Software Foundation; either version 2 of
  14  * the License, or (at your option) any later version.
  15  *
  16  * This program is distributed in the hope that it will be useful,
  17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  19  * GNU General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU General Public License
  22  * along with this program; if not, write to the Free Software
  23  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
  24  * MA 02110-1301 USA
  25  */
  26
  27 #ifndef __KW_SPI_H__
  28 #define __KW_SPI_H__
  29
  30 /* SPI Registers on kirkwood SOC */
  31 struct kwspi_registers {
  32         u32 ctrl;       /* 0x10600 */
  33         u32 cfg;        /* 0x10604 */
  34         u32 dout;       /* 0x10608 */
  35         u32 din;        /* 0x1060c */
  36         u32 irq_cause;  /* 0x10610 */
  37         u32 irq_mask;   /* 0x10614 */
  38 };
  39
  40 #define KWSPI_CLKPRESCL_MASK    0x1f
  41 #define KWSPI_CSN_ACT           1 /* Activates serial memory interface */
  42 #define KWSPI_SMEMRDY           (1 << 1) /* SerMem Data xfer ready */
  43 #define KWSPI_IRQUNMASK         1 /* unmask SPI interrupt */
  44 #define KWSPI_IRQMASK           0 /* mask SPI interrupt */
  45 #define KWSPI_SMEMRDIRQ         1 /* SerMem data xfer ready irq */
  46 #define KWSPI_XFERLEN_1BYTE     0
  47 #define KWSPI_XFERLEN_2BYTE     (1 << 5)
  48 #define KWSPI_XFERLEN_MASK      (1 << 5)
  49 #define KWSPI_ADRLEN_1BYTE      0
  50 #define KWSPI_ADRLEN_2BYTE      1 << 8
  51 #define KWSPI_ADRLEN_3BYTE      2 << 8
  52 #define KWSPI_ADRLEN_4BYTE      3 << 8
  53 #define KWSPI_ADRLEN_MASK       3 << 8
  54 #define KWSPI_TIMEOUT           10000
  55
  56 #endif /* __KW_SPI_H__ */