2 * Definitions for Freescale Coldfire QSPI module
4 * Copyright 2010 Steven King <sfking@fdwdc.com>
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.
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.
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.
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.
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);
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.
44 struct mcfqspi_platform_data {
47 struct mcfqspi_cs_control *cs_control;
50 #endif /* mcfqspi_h */