diff options
Diffstat (limited to 'drivers/mtd/spi/spi_flash_internal.h')
| -rw-r--r-- | drivers/mtd/spi/spi_flash_internal.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/mtd/spi/spi_flash_internal.h b/drivers/mtd/spi/spi_flash_internal.h index 68dcffb97..440c044f7 100644 --- a/drivers/mtd/spi/spi_flash_internal.h +++ b/drivers/mtd/spi/spi_flash_internal.h @@ -19,6 +19,11 @@ #define CMD_READ_ARRAY_FAST 0x0b #define CMD_READ_ARRAY_LEGACY 0xe8 +#define CMD_READ_STATUS 0x05 + +/* Common status */ +#define STATUS_WIP 0x01 + /* 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); @@ -43,6 +48,16 @@ int spi_flash_cmd_write(struct spi_slave *spi, const u8 *cmd, size_t cmd_len, int spi_flash_read_common(struct spi_flash *flash, const u8 *cmd, size_t cmd_len, void *data, size_t data_len); +/* Send a command to the device and wait for some bit to clear itself. */ +int spi_flash_cmd_poll_bit(struct spi_flash *flash, unsigned long timeout, + u8 cmd, u8 poll_bit); + +/* + * Send the read status command to the device and wait for the wip + * (write-in-progress) bit to clear itself. + */ +int spi_flash_cmd_wait_ready(struct spi_flash *flash, unsigned long timeout); + /* 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); |