linux-imx

/*

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

 *  under the terms of the GNU General Public License version 2 as published

 *  by the Free Software Foundation.

 *

 *  Copyright (C) 2012 Thomas Langer <thomas.langer@lantiq.com>

 */

​

#include <linux/module.h>

#include <linux/device.h>

#include <linux/platform_device.h>

#include <linux/spi/spi.h>

#include <linux/delay.h>

#include <linux/of.h>

#include <linux/of_platform.h>

​

#include <lantiq_soc.h>

​

#define DRV_NAME        "sflash-falcon"

​

#define FALCON_SPI_XFER_BEGIN   (1 << 0)

#define FALCON_SPI_XFER_END (1 << 1)

​

/* Bus Read Configuration Register0 */

#define BUSRCON0        0x00000010

/* Bus Write Configuration Register0 */

#define BUSWCON0        0x00000018

/* Serial Flash Configuration Register */

#define SFCON           0x00000080

/* Serial Flash Time Register */

#define SFTIME          0x00000084

/* Serial Flash Status Register */

#define SFSTAT          0x00000088

/* Serial Flash Command Register */

#define SFCMD           0x0000008C

/* Serial Flash Address Register */

#define SFADDR          0x00000090

/* Serial Flash Data Register */

#define SFDATA          0x00000094

/* Serial Flash I/O Control Register */

#define SFIO            0x00000098

/* EBU Clock Control Register */

#define EBUCC           0x000000C4

​

/* Dummy Phase Length */

#define SFCMD_DUMLEN_OFFSET 16

#define SFCMD_DUMLEN_MASK   0x000F0000

/* Chip Select */

#define SFCMD_CS_OFFSET     24

#define SFCMD_CS_MASK       0x07000000

/* field offset */

#define SFCMD_ALEN_OFFSET   20

#define SFCMD_ALEN_MASK     0x00700000

/* SCK Rise-edge Position */

#define SFTIME_SCKR_POS_OFFSET  8

#define SFTIME_SCKR_POS_MASK    0x00000F00

/* SCK Period */

#define SFTIME_SCK_PER_OFFSET   0

#define SFTIME_SCK_PER_MASK 0x0000000F

/* SCK Fall-edge Position */

#define SFTIME_SCKF_POS_OFFSET  12

#define SFTIME_SCKF_POS_MASK    0x0000F000

/* Device Size */