/* * SPI master driver using generic bitbanged GPIO * * Sebastian Hesselbarth * * Based on Linux driver * Copyright (C) 2006,2008 David Brownell * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * 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 __SPI_GPIO_H #define __SPI_GPIO_H #define MAX_CHIPSELECT 4 #define SPI_GPIO_NO_CS (-1) #define SPI_GPIO_NO_MISO (-1) #define SPI_GPIO_NO_MOSI (-1) struct gpio_spi_pdata { int sck; int mosi; int miso; int cs[MAX_CHIPSELECT]; int num_cs; }; #endif