51 lines
1.8 KiB
C
51 lines
1.8 KiB
C
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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 <sfking@fdwdc.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2
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* as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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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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