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