drivers/spi/sh_spi.h

   1 /*
   2  * SH SPI driver
   3  *
   4  * Copyright (C) 2011 Renesas Solutions Corp.
   5  *
   6  * SPDX-License-Identifier:     GPL-2.0
   7  */
   8
   9 #ifndef __SH_SPI_H__
  10 #define __SH_SPI_H__
  11
  12 #include <spi.h>
  13
  14 struct sh_spi_regs {
  15         unsigned long tbr_rbr;
  16         unsigned long resv1;
  17         unsigned long cr1;
  18         unsigned long resv2;
  19         unsigned long cr2;
  20         unsigned long resv3;
  21         unsigned long cr3;
  22         unsigned long resv4;
  23         unsigned long cr4;
  24 };
  25
  26 /* CR1 */
  27 #define SH_SPI_TBE      0x80
  28 #define SH_SPI_TBF      0x40
  29 #define SH_SPI_RBE      0x20
  30 #define SH_SPI_RBF      0x10
  31 #define SH_SPI_PFONRD   0x08
  32 #define SH_SPI_SSDB     0x04
  33 #define SH_SPI_SSD      0x02
  34 #define SH_SPI_SSA      0x01
  35
  36 /* CR2 */
  37 #define SH_SPI_RSTF     0x80
  38 #define SH_SPI_LOOPBK   0x40
  39 #define SH_SPI_CPOL     0x20
  40 #define SH_SPI_CPHA     0x10
  41 #define SH_SPI_L1M0     0x08
  42
  43 /* CR3 */
  44 #define SH_SPI_MAX_BYTE 0xFF
  45
  46 /* CR4 */
  47 #define SH_SPI_TBEI     0x80
  48 #define SH_SPI_TBFI     0x40
  49 #define SH_SPI_RBEI     0x20
  50 #define SH_SPI_RBFI     0x10
  51 #define SH_SPI_SSS1     0x08
  52 #define SH_SPI_WPABRT   0x04
  53 #define SH_SPI_SSS0     0x01
  54
  55 #define SH_SPI_FIFO_SIZE        32
  56 #define SH_SPI_NUM_CS           4
  57
  58 struct sh_spi {
  59         struct spi_slave        slave;
  60         struct sh_spi_regs      *regs;
  61 };
  62
  63 static inline struct sh_spi *to_sh_spi(struct spi_slave *slave)
  64 {
  65         return container_of(slave, struct sh_spi, slave);
  66 }
  67
  68 #endif