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