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 */