/* * 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. */ #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 */