1 /* 2 * Copyright (c) 2016, Linaro Limited 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright notice, 9 * this list of conditions and the following disclaimer. 10 * 11 * 2. Redistributions in binary form must reproduce the above copyright notice, 12 * this list of conditions and the following disclaimer in the documentation 13 * and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 16 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE 19 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 20 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 21 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 22 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 23 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 24 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 25 * POSSIBILITY OF SUCH DAMAGE. 26 * 27 */ 28 29 #ifndef __PL022_SPI_H__ 30 #define __PL022_SPI_H__ 31 32 #include <spi.h> 33 #include <types_ext.h> 34 35 #define PL022_REG_SIZE 0x1000 36 37 struct pl022_data { 38 struct spi_chip chip; 39 struct gpio_chip *gpio; 40 vaddr_t base; 41 vaddr_t cs_gpio_base; /* chip select */ 42 unsigned int clk_hz; 43 unsigned int speed_hz; 44 unsigned int cs_gpio_pin; /* chip select */ 45 unsigned int mode; 46 unsigned int data_size_bits; 47 bool loopback; 48 }; 49 50 void pl022_configure(struct pl022_data *pd); 51 void pl022_start(struct pl022_data *pd); 52 void pl022_end(struct pl022_data *pd); 53 54 #endif /* __PL022_SPI_H__ */ 55 56