1/* 2 * Definitions for Freescale Coldfire QSPI module 3 * 4 * Copyright 2010 Steven King <sfking@fdwdc.com> 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 version 2 8 * as published by the Free Software Foundation. 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 along 16 * with this program; if not, write to the Free Software Foundation, Inc., 17 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19*/ 20 21#ifndef mcfqspi_h 22#define mcfqspi_h 23 24#if defined(CONFIG_M523x) || defined(CONFIG_M527x) || defined(CONFIG_M528x) 25#define MCFQSPI_IOBASE (MCF_IPSBAR + 0x340) 26#elif defined(CONFIG_M5249) 27#define MCFQSPI_IOBASE (MCF_MBAR + 0x300) 28#elif defined(CONFIG_M520x) || defined(CONFIG_M532x) 29#define MCFQSPI_IOBASE 0xFC058000 30#endif 31#define MCFQSPI_IOSIZE 0x40 32 33/** 34 * struct mcfqspi_cs_control - chip select control for the coldfire qspi driver 35 * @setup: setup the control; allocate gpio's, etc. May be NULL. 36 * @teardown: finish with the control; free gpio's, etc. May be NULL. 37 * @select: output the signals to select the device. Can not be NULL. 38 * @deselect: output the signals to deselect the device. Can not be NULL. 39 * 40 * The QSPI module has 4 hardware chip selects. We don't use them. Instead 41 * platforms are required to supply a mcfqspi_cs_control as a part of the 42 * platform data for each QSPI master controller. Only the select and 43 * deselect functions are required. 44*/ 45struct mcfqspi_cs_control { 46 int (*setup)(struct mcfqspi_cs_control *); 47 void (*teardown)(struct mcfqspi_cs_control *); 48 void (*select)(struct mcfqspi_cs_control *, u8, bool); 49 void (*deselect)(struct mcfqspi_cs_control *, u8, bool); 50}; 51 52/** 53 * struct mcfqspi_platform_data - platform data for the coldfire qspi driver 54 * @bus_num: board specific identifier for this qspi driver. 55 * @num_chipselects: number of chip selects supported by this qspi driver. 56 * @cs_control: platform dependent chip select control. 57*/ 58struct mcfqspi_platform_data { 59 s16 bus_num; 60 u16 num_chipselect; 61 struct mcfqspi_cs_control *cs_control; 62}; 63 64#endif /* mcfqspi_h */ 65