#ifndef _M25P80_H_
#define _M25P80_H_

/* Flash opcodes. */
#define	OPCODE_WREN		0x06	/* Write enable */
#define	OPCODE_RDSR		0x05	/* Read status register */
#define	OPCODE_WRSR		0x01	/* Write status register 1 byte */
#define	OPCODE_NORM_READ	0x03	/* Read data bytes (low frequency) */
#define	OPCODE_FAST_READ	0x0b	/* Read data bytes (high frequency) */
#define	OPCODE_PP		0x02	/* Page program (up to 256 bytes) */
#define	OPCODE_BE_4K		0x20	/* Erase 4KiB block */
#define	OPCODE_BE_32K		0x52	/* Erase 32KiB block */
#define	OPCODE_CHIP_ERASE	0xc7	/* Erase whole flash chip */
#define	OPCODE_SE		0xd8	/* Sector erase (usually 64KiB) */
#define	OPCODE_RDID		0x9f	/* Read JEDEC ID */

/* Used for SST flashes only. */
#define	OPCODE_BP		0x02	/* Byte program */
#define	OPCODE_WRDI		0x04	/* Write disable */
#define	OPCODE_AAI_WP		0xad	/* Auto address increment word program */

/* Used for Macronix flashes only. */
#define	OPCODE_EN4B		0xb7	/* Enter 4-byte mode */
#define	OPCODE_EX4B		0xe9	/* Exit 4-byte mode */

/* Status Register bits. */
#define	SR_WIP			1	/* Write in progress */
#define	SR_WEL			2	/* Write enable latch */
/* meaning of other SR_* bits may differ between vendors */
#define	SR_BP0			4	/* Block protect 0 */
#define	SR_BP1			8	/* Block protect 1 */
#define	SR_BP2			0x10	/* Block protect 2 */
#define	SR_SRWD			0x80	/* SR write protect */

/* Define max times to check status register before we give up. */
#define	MAX_READY_WAIT		40	/* M25P16 specs 40s max chip erase */
#define MAX_CMD_SIZE		6

#define SPI_NAME_SIZE   32

struct spi_device_id {
	char name[SPI_NAME_SIZE];
	unsigned long driver_data;
};

struct m25p {
	struct spi_device	*spi;
	struct flash_info	*info;
	struct mtd_info		mtd;
	struct cdev		cdev;
	char			*name;
	u32			erasesize;
	u32			sector_size;
	u16			page_size;
	u16			addr_width;
	u8			erase_opcode;
	u8			erase_opcode_4k;
	u8			*command;
	u32			size;
};

struct flash_info {
	/* JEDEC id zero means "no ID" (most older chips); otherwise it has
	 * a high byte of zero plus three data bytes: the manufacturer id,
	 * then a two byte device id.
	 */
	u32		jedec_id;
	u16		ext_id;

	/* The size listed here is what works with OPCODE_SE, which isn't
	 * necessarily called a "sector" by the vendor.
	 */
	unsigned	sector_size;
	u16		n_sectors;

	u16		page_size;
	u16		addr_width;

	u16		flags;
#define	SECT_4K		0x01		/* OPCODE_BE_4K works uniformly */
#define	M25P_NO_ERASE	0x02		/* No erase command needed */
};

#endif