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
16#ifndef mcfqspi_h
17#define mcfqspi_h
18
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*/
31struct 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*/
44struct mcfqspi_platform_data {
45	s16	bus_num;
46	u16	num_chipselect;
47	struct mcfqspi_cs_control *cs_control;
48};
49
50#endif /* mcfqspi_h */
51