1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0-only */ 2*4882a593Smuzhiyun /* 3*4882a593Smuzhiyun * Definitions for Freescale Coldfire QSPI module 4*4882a593Smuzhiyun * 5*4882a593Smuzhiyun * Copyright 2010 Steven King <sfking@fdwdc.com> 6*4882a593Smuzhiyun */ 7*4882a593Smuzhiyun 8*4882a593Smuzhiyun #ifndef mcfqspi_h 9*4882a593Smuzhiyun #define mcfqspi_h 10*4882a593Smuzhiyun 11*4882a593Smuzhiyun /** 12*4882a593Smuzhiyun * struct mcfqspi_cs_control - chip select control for the coldfire qspi driver 13*4882a593Smuzhiyun * @setup: setup the control; allocate gpio's, etc. May be NULL. 14*4882a593Smuzhiyun * @teardown: finish with the control; free gpio's, etc. May be NULL. 15*4882a593Smuzhiyun * @select: output the signals to select the device. Can not be NULL. 16*4882a593Smuzhiyun * @deselect: output the signals to deselect the device. Can not be NULL. 17*4882a593Smuzhiyun * 18*4882a593Smuzhiyun * The QSPI module has 4 hardware chip selects. We don't use them. Instead 19*4882a593Smuzhiyun * platforms are required to supply a mcfqspi_cs_control as a part of the 20*4882a593Smuzhiyun * platform data for each QSPI master controller. Only the select and 21*4882a593Smuzhiyun * deselect functions are required. 22*4882a593Smuzhiyun */ 23*4882a593Smuzhiyun struct mcfqspi_cs_control { 24*4882a593Smuzhiyun int (*setup)(struct mcfqspi_cs_control *); 25*4882a593Smuzhiyun void (*teardown)(struct mcfqspi_cs_control *); 26*4882a593Smuzhiyun void (*select)(struct mcfqspi_cs_control *, u8, bool); 27*4882a593Smuzhiyun void (*deselect)(struct mcfqspi_cs_control *, u8, bool); 28*4882a593Smuzhiyun }; 29*4882a593Smuzhiyun 30*4882a593Smuzhiyun /** 31*4882a593Smuzhiyun * struct mcfqspi_platform_data - platform data for the coldfire qspi driver 32*4882a593Smuzhiyun * @bus_num: board specific identifier for this qspi driver. 33*4882a593Smuzhiyun * @num_chipselects: number of chip selects supported by this qspi driver. 34*4882a593Smuzhiyun * @cs_control: platform dependent chip select control. 35*4882a593Smuzhiyun */ 36*4882a593Smuzhiyun struct mcfqspi_platform_data { 37*4882a593Smuzhiyun s16 bus_num; 38*4882a593Smuzhiyun u16 num_chipselect; 39*4882a593Smuzhiyun struct mcfqspi_cs_control *cs_control; 40*4882a593Smuzhiyun }; 41*4882a593Smuzhiyun 42*4882a593Smuzhiyun #endif /* mcfqspi_h */ 43