drivers/mtd/spi/spi_flash_internal.h

   1 /*
   2  * SPI flash internal definitions
   3  *
   4  * Copyright (C) 2008 Atmel Corporation
   5  */
   6
   7 /* Common parameters */
   8 #define SPI_FLASH_PROG_TIMEOUT          ((10 * CONFIG_SYS_HZ) / 1000)
   9 #define SPI_FLASH_PAGE_ERASE_TIMEOUT    ((50 * CONFIG_SYS_HZ) / 1000)
  10 #define SPI_FLASH_SECTOR_ERASE_TIMEOUT  (10 * CONFIG_SYS_HZ)
  11
  12 /* Common commands */
  13 #define CMD_READ_ID                     0x9f
  14
  15 #define CMD_READ_ARRAY_SLOW             0x03
  16 #define CMD_READ_ARRAY_FAST             0x0b
  17 #define CMD_READ_ARRAY_LEGACY           0xe8
  18
  19 /* Send a single-byte command to the device and read the response */
  20 int spi_flash_cmd(struct spi_slave *spi, u8 cmd, void *response, size_t len);
  21
  22 /*
  23  * Send a multi-byte command to the device and read the response. Used
  24  * for flash array reads, etc.
  25  */
  26 int spi_flash_cmd_read(struct spi_slave *spi, const u8 *cmd,
  27                 size_t cmd_len, void *data, size_t data_len);
  28
  29 /*
  30  * Send a multi-byte command to the device followed by (optional)
  31  * data. Used for programming the flash array, etc.
  32  */
  33 int spi_flash_cmd_write(struct spi_slave *spi, const u8 *cmd, size_t cmd_len,
  34                 const void *data, size_t data_len);
  35
  36 /*
  37  * Same as spi_flash_cmd_read() except it also claims/releases the SPI
  38  * bus. Used as common part of the ->read() operation.
  39  */
  40 int spi_flash_read_common(struct spi_flash *flash, const u8 *cmd,
  41                 size_t cmd_len, void *data, size_t data_len);
  42
  43 /* Manufacturer-specific probe functions */
  44 struct spi_flash *spi_flash_probe_spansion(struct spi_slave *spi, u8 *idcode);
  45 struct spi_flash *spi_flash_probe_atmel(struct spi_slave *spi, u8 *idcode);
  46 struct spi_flash *spi_flash_probe_stmicro(struct spi_slave *spi, u8 *idcode);