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/*
* Definitions for Freescale Coldfire QSPI module
*
* Copyright 2010 Steven King <sfking@fdwdc.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
*/
#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 */