| /* SPDX-License-Identifier: GPL-2.0-only */ |
| /* |
| * Definitions for Freescale Coldfire QSPI module |
| * |
| * Copyright 2010 Steven King <sfking@fdwdc.com> |
| */ |
| |
| #ifndef mcfqspi_h |
| #define mcfqspi_h |
| |
| /** |
| * struct mcfqspi_cs_control - chip select control for the coldfire qspi driver |
| * @setup: setup the control; allocate gpio's, etc. May be NULL. |
| * @teardown: finish with the control; free gpio's, etc. May be NULL. |
| * @select: output the signals to select the device. Can not be NULL. |
| * @deselect: output the signals to deselect the device. Can not be NULL. |
| * |
| * The QSPI module has 4 hardware chip selects. We don't use them. Instead |
| * platforms are required to supply a mcfqspi_cs_control as a part of the |
| * platform data for each QSPI master controller. Only the select and |
| * deselect functions are required. |
| */ |
| struct mcfqspi_cs_control { |
| int (*setup)(struct mcfqspi_cs_control *); |
| void (*teardown)(struct mcfqspi_cs_control *); |
| void (*select)(struct mcfqspi_cs_control *, u8, bool); |
| void (*deselect)(struct mcfqspi_cs_control *, u8, bool); |
| }; |
| |
| /** |
| * struct mcfqspi_platform_data - platform data for the coldfire qspi driver |
| * @bus_num: board specific identifier for this qspi driver. |
| * @num_chipselects: number of chip selects supported by this qspi driver. |
| * @cs_control: platform dependent chip select control. |
| */ |
| struct mcfqspi_platform_data { |
| s16 bus_num; |
| u16 num_chipselect; |
| struct mcfqspi_cs_control *cs_control; |
| }; |
| |
| #endif /* mcfqspi_h */ |
