diff options
Diffstat (limited to 'drivers/mtd/spi/spi_flash_internal.h')
| -rw-r--r-- | drivers/mtd/spi/spi_flash_internal.h | 45 | 
1 files changed, 45 insertions, 0 deletions
| diff --git a/drivers/mtd/spi/spi_flash_internal.h b/drivers/mtd/spi/spi_flash_internal.h new file mode 100644 index 000000000..14380500a --- /dev/null +++ b/drivers/mtd/spi/spi_flash_internal.h @@ -0,0 +1,45 @@ +/* + * SPI flash internal definitions + * + * Copyright (C) 2008 Atmel Corporation + */ + +/* Common parameters */ +#define SPI_FLASH_PROG_TIMEOUT		((10 * CFG_HZ) / 1000) +#define SPI_FLASH_PAGE_ERASE_TIMEOUT	((50 * CFG_HZ) / 1000) +#define SPI_FLASH_SECTOR_ERASE_TIMEOUT	(10 * CFG_HZ) + +/* Common commands */ +#define CMD_READ_ID			0x9f + +#define CMD_READ_ARRAY_SLOW		0x03 +#define CMD_READ_ARRAY_FAST		0x0b +#define CMD_READ_ARRAY_LEGACY		0xe8 + +/* Send a single-byte command to the device and read the response */ +int spi_flash_cmd(struct spi_slave *spi, u8 cmd, void *response, size_t len); + +/* + * Send a multi-byte command to the device and read the response. Used + * for flash array reads, etc. + */ +int spi_flash_cmd_read(struct spi_slave *spi, const u8 *cmd, +		size_t cmd_len, void *data, size_t data_len); + +/* + * Send a multi-byte command to the device followed by (optional) + * data. Used for programming the flash array, etc. + */ +int spi_flash_cmd_write(struct spi_slave *spi, const u8 *cmd, size_t cmd_len, +		const void *data, size_t data_len); + +/* + * Same as spi_flash_cmd_read() except it also claims/releases the SPI + * bus. Used as common part of the ->read() operation. + */ +int spi_flash_read_common(struct spi_flash *flash, const u8 *cmd, +		size_t cmd_len, void *data, size_t data_len); + +/* Manufacturer-specific probe functions */ +struct spi_flash *spi_flash_probe_spansion(struct spi_slave *spi, u8 *idcode); +struct spi_flash *spi_flash_probe_atmel(struct spi_slave *spi, u8 *idcode); |