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) 29 #define MCFQSPI_IOBASE 0xFC05C000 30 #elif defined(CONFIG_M532x) 31 #define MCFQSPI_IOBASE 0xFC058000 32 #endif 33 #define MCFQSPI_IOSIZE 0x40 34 35 /** 36 * struct mcfqspi_cs_control - chip select control for the coldfire qspi driver 37 * @setup: setup the control; allocate gpio's, etc. May be NULL. 38 * @teardown: finish with the control; free gpio's, etc. May be NULL. 39 * @select: output the signals to select the device. Can not be NULL. 40 * @deselect: output the signals to deselect the device. Can not be NULL. 41 * 42 * The QSPI module has 4 hardware chip selects. We don't use them. Instead 43 * platforms are required to supply a mcfqspi_cs_control as a part of the 44 * platform data for each QSPI master controller. Only the select and 45 * deselect functions are required. 46 */ 47 struct mcfqspi_cs_control { 48 int (*setup)(struct mcfqspi_cs_control *); 49 void (*teardown)(struct mcfqspi_cs_control *); 50 void (*select)(struct mcfqspi_cs_control *, u8, bool); 51 void (*deselect)(struct mcfqspi_cs_control *, u8, bool); 52 }; 53 54 /** 55 * struct mcfqspi_platform_data - platform data for the coldfire qspi driver 56 * @bus_num: board specific identifier for this qspi driver. 57 * @num_chipselects: number of chip selects supported by this qspi driver. 58 * @cs_control: platform dependent chip select control. 59 */ 60 struct mcfqspi_platform_data { 61 s16 bus_num; 62 u16 num_chipselect; 63 struct mcfqspi_cs_control *cs_control; 64 }; 65 66 #endif /* mcfqspi_h */ 67