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#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
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