board/freescale/common/ngpixis.h

   1 /**
   2  * Copyright 2010-2011 Freescale Semiconductor
   3  * Author: Timur Tabi <timur@freescale.com>
   4  *
   5  * SPDX-License-Identifier:     GPL-2.0+
   6  *
   7  * This file provides support for the ngPIXIS, a board-specific FPGA used on
   8  * some Freescale reference boards.
   9  */
  10
  11 /* ngPIXIS register set. Hopefully, this won't change too much over time.
  12  * Feel free to add board-specific #ifdefs where necessary.
  13  */
  14 typedef struct ngpixis {
  15         u8 id;
  16         u8 arch;
  17         u8 scver;
  18         u8 csr;
  19         u8 rst;
  20         u8 serclk;
  21         u8 aux;
  22         u8 spd;
  23         u8 brdcfg0;
  24         u8 brdcfg1;     /* On some boards, this register is called 'dma' */
  25         u8 addr;
  26         u8 brdcfg2;
  27         u8 gpiodir;
  28         u8 data;
  29         u8 led;
  30         u8 tag;
  31         u8 vctl;
  32         u8 vstat;
  33         u8 vcfgen0;
  34         u8 res4;
  35         u8 ocmcsr;
  36         u8 ocmmsg;
  37         u8 gmdbg;
  38         u8 res5[2];
  39         u8 sclk[3];
  40         u8 dclk[3];
  41         u8 watch;
  42         struct {
  43                 u8 sw;
  44                 u8 en;
  45         } s[9];         /* s[0]..s[7] is SW1..SW8, and s[8] is SW11 */
  46 } __attribute__ ((packed)) ngpixis_t;
  47
  48 /* Pointer to the PIXIS register set */
  49 #define pixis ((ngpixis_t *)PIXIS_BASE)
  50
  51 /* The PIXIS SW register that corresponds to board switch X, where x >= 1 */
  52 #define PIXIS_SW(x)             (pixis->s[(x) - 1].sw)
  53
  54 /* The PIXIS EN register that corresponds to board switch X, where x >= 1 */
  55 #define PIXIS_EN(x)             (pixis->s[(x) - 1].en)
  56
  57 u8 pixis_read(unsigned int reg);
  58 void pixis_write(unsigned int reg, u8 value);
  59
  60 #define PIXIS_READ(reg) pixis_read(offsetof(ngpixis_t, reg))
  61 #define PIXIS_WRITE(reg, value) pixis_write(offsetof(ngpixis_t, reg), value)