| Steven King | 91d6041 | 2010-01-22 12:43:03 -0800 | [diff] [blame] | 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 | */ |
| 45 | struct 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 | */ |
| 58 | struct mcfqspi_platform_data { |
| 59 | s16 bus_num; |
| 60 | u16 num_chipselect; |
| 61 | struct mcfqspi_cs_control *cs_control; |
| 62 | }; |
| 63 | |
| 64 | #endif /* mcfqspi_h */ |