LXR uboot/drivers/spi/sh

   1/*
   2 * SH SPI driver
   3 *
   4 * Copyright (C) 2011 Renesas Solutions Corp.
   5 *
   6 * This program is free software; you can redistribute it and/or modify
   7 * it under the terms of the GNU General Public License as published by
   8 * the Free Software Foundation; version 2 of the License.
   9 *
  10 * This program is distributed in the hope that it will be useful,
  11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 * GNU General Public License for more details.
  14 *
  15 * You should have received a copy of the GNU General Public License
  16 * along with this program; if not, write to the Free Software
  17 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  18 *
  19 */
  20
  21#ifndef __SH_SPI_H__
  22#define __SH_SPI_H__
  23
  24#include <spi.h>
  25
  26struct sh_spi_regs {
  27        unsigned long tbr_rbr;
  28        unsigned long resv1;
  29        unsigned long cr1;
  30        unsigned long resv2;
  31        unsigned long cr2;
  32        unsigned long resv3;
  33        unsigned long cr3;
  34        unsigned long resv4;
  35        unsigned long cr4;
  36};
  37
  38/* CR1 */
  39#define SH_SPI_TBE      0x80
  40#define SH_SPI_TBF      0x40
  41#define SH_SPI_RBE      0x20
  42#define SH_SPI_RBF      0x10
  43#define SH_SPI_PFONRD   0x08
  44#define SH_SPI_SSDB     0x04
  45#define SH_SPI_SSD      0x02
  46#define SH_SPI_SSA      0x01
  47
  48/* CR2 */
  49#define SH_SPI_RSTF     0x80
  50#define SH_SPI_LOOPBK   0x40
  51#define SH_SPI_CPOL     0x20
  52#define SH_SPI_CPHA     0x10
  53#define SH_SPI_L1M0     0x08
  54
  55/* CR3 */
  56#define SH_SPI_MAX_BYTE 0xFF
  57
  58/* CR4 */
  59#define SH_SPI_TBEI     0x80
  60#define SH_SPI_TBFI     0x40
  61#define SH_SPI_RBEI     0x20
  62#define SH_SPI_RBFI     0x10
  63#define SH_SPI_WPABRT   0x04
  64#define SH_SPI_SSS      0x01
  65
  66#define SH_SPI_FIFO_SIZE        32
  67
  68struct sh_spi {
  69        struct spi_slave        slave;
  70        struct sh_spi_regs      *regs;
  71};
  72
  73static inline struct sh_spi *to_sh_spi(struct spi_slave *slave)
  74{
  75        return container_of(slave, struct sh_spi, slave);
  76}
  77
  78#endif
  79