linux-imx

/*

 * Copyright (C) 2005 Stephen Street / StreetFire Sound Labs

 * Copyright (C) 2013, Intel Corporation

 *

 * 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.

 */

​

#include <linux/bitops.h>

#include <linux/init.h>

#include <linux/module.h>

#include <linux/device.h>

#include <linux/ioport.h>

#include <linux/errno.h>

#include <linux/err.h>

#include <linux/interrupt.h>

#include <linux/kernel.h>

#include <linux/pci.h>

#include <linux/platform_device.h>

#include <linux/spi/pxa2xx_spi.h>

#include <linux/spi/spi.h>

#include <linux/delay.h>

#include <linux/gpio.h>

#include <linux/gpio/consumer.h>

#include <linux/slab.h>

#include <linux/clk.h>

#include <linux/pm_runtime.h>

#include <linux/acpi.h>

#include <linux/of_device.h>

​

#include "spi-pxa2xx.h"

​

MODULE_AUTHOR("Stephen Street");

MODULE_DESCRIPTION("PXA2xx SSP SPI Controller");

MODULE_LICENSE("GPL");

MODULE_ALIAS("platform:pxa2xx-spi");

​

#define TIMOUT_DFLT     1000

​

/*

 * for testing SSCR1 changes that require SSP restart, basically

 * everything except the service and interrupt enables, the pxa270 developer

 * manual says only SSCR1_SCFR, SSCR1_SPH, SSCR1_SPO need to be in this

 * list, but the PXA255 dev man says all bits without really meaning the

 * service and interrupt enables

 */

#define SSCR1_CHANGE_MASK (SSCR1_TTELP | SSCR1_TTE | SSCR1_SCFR \

                | SSCR1_ECRA | SSCR1_ECRB | SSCR1_SCLKDIR \

                | SSCR1_SFRMDIR | SSCR1_RWOT | SSCR1_TRAIL \

                | SSCR1_IFS | SSCR1_STRF | SSCR1_EFWR \

                | SSCR1_RFT | SSCR1_TFT | SSCR1_MWDS \

                | SSCR1_SPH | SSCR1_SPO | SSCR1_LBM)

​

#define QUARK_X1000_SSCR1_CHANGE_MASK (QUARK_X1000_SSCR1_STRF   \

                | QUARK_X1000_SSCR1_EFWR    \

                | QUARK_X1000_SSCR1_RFT     \