| 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. |
| Steven King | 91d6041 | 2010-01-22 12:43:03 -0800 | [diff] [blame] | 14 | */ |
| 15 | |
| 16 | #ifndef mcfqspi_h |
| 17 | #define mcfqspi_h |
| 18 | |
| Steven King | 91d6041 | 2010-01-22 12:43:03 -0800 | [diff] [blame] | 19 | /** |
| 20 | * struct mcfqspi_cs_control - chip select control for the coldfire qspi driver |
| 21 | * @setup: setup the control; allocate gpio's, etc. May be NULL. |
| 22 | * @teardown: finish with the control; free gpio's, etc. May be NULL. |
| 23 | * @select: output the signals to select the device. Can not be NULL. |
| 24 | * @deselect: output the signals to deselect the device. Can not be NULL. |
| 25 | * |
| 26 | * The QSPI module has 4 hardware chip selects. We don't use them. Instead |
| 27 | * platforms are required to supply a mcfqspi_cs_control as a part of the |
| 28 | * platform data for each QSPI master controller. Only the select and |
| 29 | * deselect functions are required. |
| 30 | */ |
| 31 | struct mcfqspi_cs_control { |
| 32 | int (*setup)(struct mcfqspi_cs_control *); |
| 33 | void (*teardown)(struct mcfqspi_cs_control *); |
| 34 | void (*select)(struct mcfqspi_cs_control *, u8, bool); |
| 35 | void (*deselect)(struct mcfqspi_cs_control *, u8, bool); |
| 36 | }; |
| 37 | |
| 38 | /** |
| 39 | * struct mcfqspi_platform_data - platform data for the coldfire qspi driver |
| 40 | * @bus_num: board specific identifier for this qspi driver. |
| 41 | * @num_chipselects: number of chip selects supported by this qspi driver. |
| 42 | * @cs_control: platform dependent chip select control. |
| 43 | */ |
| 44 | struct mcfqspi_platform_data { |
| 45 | s16 bus_num; |
| 46 | u16 num_chipselect; |
| 47 | struct mcfqspi_cs_control *cs_control; |
| 48 | }; |
| 49 | |
| 50 | #endif /* mcfqspi_h */ |