linux-imx

/*

 * Driver for Cadence QSPI Controller

 *

 * Copyright Altera Corporation (C) 2012-2014. All rights reserved.

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms and conditions of the GNU General Public License,

 * version 2, as published by the Free Software Foundation.

 *

 * This program is distributed in the hope 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.

 *

 * You should have received a copy of the GNU General Public License along with

 * this program.  If not, see <http://www.gnu.org/licenses/>.

 */

#include <linux/clk.h>

#include <linux/completion.h>

#include <linux/delay.h>

#include <linux/dma-mapping.h>

#include <linux/dmaengine.h>

#include <linux/err.h>

#include <linux/errno.h>

#include <linux/interrupt.h>

#include <linux/io.h>

#include <linux/jiffies.h>

#include <linux/kernel.h>

#include <linux/module.h>

#include <linux/mtd/mtd.h>

#include <linux/mtd/partitions.h>

#include <linux/mtd/spi-nor.h>

#include <linux/of_device.h>

#include <linux/of.h>

#include <linux/platform_device.h>

#include <linux/pm_runtime.h>

#include <linux/sched.h>

#include <linux/spi/spi.h>

#include <linux/timer.h>

​

#define CQSPI_NAME          "cadence-qspi"

#define CQSPI_MAX_CHIPSELECT        16

​

/* Quirks */

#define CQSPI_NEEDS_WR_DELAY        BIT(0)

​

/* Capabilities mask */

#define CQSPI_BASE_HWCAPS_MASK                  \

    (SNOR_HWCAPS_READ | SNOR_HWCAPS_READ_FAST |     \

    SNOR_HWCAPS_READ_1_1_2 | SNOR_HWCAPS_READ_1_1_4 |   \

    SNOR_HWCAPS_PP)

​

struct cqspi_st;

​

struct cqspi_flash_pdata {

    struct spi_nor  nor;

    struct cqspi_st *cqspi;

    u32     clk_rate;

    u32     read_delay;

    u32     tshsl_ns;

    u32     tsd2d_ns;

    u32     tchsh_ns;

    u32     tslch_ns;