56 lines
2 KiB
C
56 lines
2 KiB
C
|
/*
|
||
|
|
* 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 */
|