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/*
* Copyright (c) 2016, Linaro Limited
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
*/
#ifndef __PL022_SPI_H__
#define __PL022_SPI_H__
#include <gpio.h>
#include <spi.h>
#define PL022_REG_SIZE 0x1000
enum pl022_cs_control {
PL022_CS_CTRL_AUTO_GPIO,
PL022_CS_CTRL_CB,
PL022_CS_CTRL_MANUAL
};
struct pl022_cs_gpio_data {
struct gpio_chip *chip;
unsigned int pin_num;
};
union pl022_cs_data {
struct pl022_cs_gpio_data gpio_data;
void (*cs_cb)(enum gpio_level value);
};
struct pl022_data {
union pl022_cs_data cs_data;
struct spi_chip chip;
vaddr_t base;
enum spi_mode mode;
enum pl022_cs_control cs_control;
unsigned int clk_hz;
unsigned int speed_hz;
unsigned int data_size_bits;
bool loopback;
};
void pl022_init(struct pl022_data *pd);
#endif /* __PL022_SPI_H__ */
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