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_M527x) || defined(CONFIG_M528x) 25 #define MCFQSPI_IOBASE (MCF_IPSBAR + 0x340) 26 #elif defined(CONFIG_M532x) 27 #define MCFQSPI_IOBASE 0xFC058000 28 #endif 29 #define MCFQSPI_IOSIZE 0x40 30 31 /** 32 * struct mcfqspi_cs_control - chip select control for the coldfire qspi driver 33 * @setup: setup the control; allocate gpio's, etc. May be NULL. 34 * @teardown: finish with the control; free gpio's, etc. May be NULL. 35 * @select: output the signals to select the device. Can not be NULL. 36 * @deselect: output the signals to deselect the device. Can not be NULL. 37 * 38 * The QSPI module has 4 hardware chip selects. We don't use them. Instead 39 * platforms are required to supply a mcfqspi_cs_control as a part of the 40 * platform data for each QSPI master controller. Only the select and 41 * deselect functions are required. 42 */ 43 struct mcfqspi_cs_control { 44 int (*setup)(struct mcfqspi_cs_control *); 45 void (*teardown)(struct mcfqspi_cs_control *); 46 void (*select)(struct mcfqspi_cs_control *, u8, bool); 47 void (*deselect)(struct mcfqspi_cs_control *, u8, bool); 48 }; 49 50 /** 51 * struct mcfqspi_platform_data - platform data for the coldfire qspi driver 52 * @bus_num: board specific identifier for this qspi driver. 53 * @num_chipselects: number of chip selects supported by this qspi driver. 54 * @cs_control: platform dependent chip select control. 55 */ 56 struct mcfqspi_platform_data { 57 s16 bus_num; 58 u16 num_chipselect; 59 struct mcfqspi_cs_control *cs_control; 60 }; 61 62 #endif /* mcfqspi_h */ 63