1 /** 2 * Copyright 2010-2011 Freescale Semiconductor 3 * Author: Timur Tabi <timur@freescale.com> 4 * 5 * This program is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License as published by the Free 7 * Software Foundation; either version 2 of the License, or (at your option) 8 * any later version. 9 * 10 * This file provides support for the ngPIXIS, a board-specific FPGA used on 11 * some Freescale reference boards. 12 */ 13 14 /* ngPIXIS register set. Hopefully, this won't change too much over time. 15 * Feel free to add board-specific #ifdefs where necessary. 16 */ 17 typedef struct ngpixis { 18 u8 id; 19 u8 arch; 20 u8 scver; 21 u8 csr; 22 u8 rst; 23 u8 serclk; 24 u8 aux; 25 u8 spd; 26 u8 brdcfg0; 27 u8 brdcfg1; /* On some boards, this register is called 'dma' */ 28 u8 addr; 29 u8 brdcfg2; 30 u8 gpiodir; 31 u8 data; 32 u8 led; 33 u8 tag; 34 u8 vctl; 35 u8 vstat; 36 u8 vcfgen0; 37 u8 res4; 38 u8 ocmcsr; 39 u8 ocmmsg; 40 u8 gmdbg; 41 u8 res5[2]; 42 u8 sclk[3]; 43 u8 dclk[3]; 44 u8 watch; 45 struct { 46 u8 sw; 47 u8 en; 48 } s[9]; /* s[0]..s[7] is SW1..SW8, and s[8] is SW11 */ 49 } __attribute__ ((packed)) ngpixis_t; 50 51 /* Pointer to the PIXIS register set */ 52 #define pixis ((ngpixis_t *)PIXIS_BASE) 53 54 /* The PIXIS SW register that corresponds to board switch X, where x >= 1 */ 55 #define PIXIS_SW(x) (pixis->s[(x) - 1].sw) 56 57 /* The PIXIS EN register that corresponds to board switch X, where x >= 1 */ 58 #define PIXIS_EN(x) (pixis->s[(x) - 1].en) 59 60 u8 pixis_read(unsigned int reg); 61 void pixis_write(unsigned int reg, u8 value); 62 63 #define PIXIS_READ(reg) pixis_read(offsetof(ngpixis_t, reg)) 64 #define PIXIS_WRITE(reg, value) pixis_write(offsetof(ngpixis_t, reg), value) 65