1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3  * Definitions for Freescale Coldfire QSPI module
4  *
5  * Copyright 2010 Steven King <sfking@fdwdc.com>
6 */
7 
8 #ifndef mcfqspi_h
9 #define mcfqspi_h
10 
11 /**
12  * struct mcfqspi_cs_control - chip select control for the coldfire qspi driver
13  * @setup: setup the control; allocate gpio's, etc. May be NULL.
14  * @teardown: finish with the control; free gpio's, etc. May be NULL.
15  * @select: output the signals to select the device.  Can not be NULL.
16  * @deselect: output the signals to deselect the device. Can not be NULL.
17  *
18  * The QSPI module has 4 hardware chip selects.  We don't use them.  Instead
19  * platforms are required to supply a mcfqspi_cs_control as a part of the
20  * platform data for each QSPI master controller.  Only the select and
21  * deselect functions are required.
22 */
23 struct mcfqspi_cs_control {
24 	int 	(*setup)(struct mcfqspi_cs_control *);
25 	void	(*teardown)(struct mcfqspi_cs_control *);
26 	void	(*select)(struct mcfqspi_cs_control *, u8, bool);
27 	void	(*deselect)(struct mcfqspi_cs_control *, u8, bool);
28 };
29 
30 /**
31  * struct mcfqspi_platform_data - platform data for the coldfire qspi driver
32  * @bus_num: board specific identifier for this qspi driver.
33  * @num_chipselects: number of chip selects supported by this qspi driver.
34  * @cs_control: platform dependent chip select control.
35 */
36 struct mcfqspi_platform_data {
37 	s16	bus_num;
38 	u16	num_chipselect;
39 	struct mcfqspi_cs_control *cs_control;
40 };
41 
42 #endif /* mcfqspi_h */
43