diff options
Diffstat (limited to 'drivers/mtd/spi/spi_flash.c')
| -rw-r--r-- | drivers/mtd/spi/spi_flash.c | 36 |
1 files changed, 14 insertions, 22 deletions
diff --git a/drivers/mtd/spi/spi_flash.c b/drivers/mtd/spi/spi_flash.c index 64d4e0f..7f6e9ae 100644 --- a/drivers/mtd/spi/spi_flash.c +++ b/drivers/mtd/spi/spi_flash.c @@ -1013,15 +1013,8 @@ int spi_flash_scan(struct spi_flash *flash) struct spi_slave *spi = flash->spi; const struct spi_flash_params *params; u16 jedec, ext_jedec; - u8 cmd, idcode[5]; + u8 idcode[5]; int ret; - static u8 spi_read_cmds_array[] = { - CMD_READ_ARRAY_SLOW, - CMD_READ_ARRAY_FAST, - CMD_READ_DUAL_OUTPUT_FAST, - CMD_READ_QUAD_OUTPUT_FAST, - CMD_READ_DUAL_IO_FAST, - CMD_READ_QUAD_IO_FAST }; /* Read the ID codes */ ret = spi_flash_cmd(spi, CMD_READ_ID, idcode, sizeof(idcode)); @@ -1162,14 +1155,14 @@ int spi_flash_scan(struct spi_flash *flash) flash->size <<= 1; #endif +#ifdef CONFIG_SPI_FLASH_USE_4K_SECTORS /* Compute erase sector and command */ if (params->flags & SECT_4K) { flash->erase_cmd = CMD_ERASE_4K; flash->erase_size = 4096 << flash->shift; - } else if (params->flags & SECT_32K) { - flash->erase_cmd = CMD_ERASE_32K; - flash->erase_size = 32768 << flash->shift; - } else { + } else +#endif + { flash->erase_cmd = CMD_ERASE_64K; flash->erase_size = flash->sector_size; } @@ -1177,17 +1170,16 @@ int spi_flash_scan(struct spi_flash *flash) /* Now erase size becomes valid sector size */ flash->sector_size = flash->erase_size; - /* Look for the fastest read cmd */ - cmd = fls(params->e_rd_cmd & spi->mode_rx); - if (cmd) { - cmd = spi_read_cmds_array[cmd - 1]; - flash->read_cmd = cmd; - } else { - /* Go for default supported read cmd */ - flash->read_cmd = CMD_READ_ARRAY_FAST; - } + /* Look for read commands */ + flash->read_cmd = CMD_READ_ARRAY_FAST; + if (spi->mode & SPI_RX_SLOW) + flash->read_cmd = CMD_READ_ARRAY_SLOW; + else if (spi->mode & SPI_RX_QUAD && params->flags & RD_QUAD) + flash->read_cmd = CMD_READ_QUAD_OUTPUT_FAST; + else if (spi->mode & SPI_RX_DUAL && params->flags & RD_DUAL) + flash->read_cmd = CMD_READ_DUAL_OUTPUT_FAST; - /* Not require to look for fastest only two write cmds yet */ + /* Look for write commands */ if (params->flags & WR_QPP && spi->mode & SPI_TX_QUAD) flash->write_cmd = CMD_QUAD_PAGE_PROGRAM; else |