diff options
author | Mike Frysinger <vapier@gentoo.org> | 2011-01-10 02:20:13 -0500 |
---|---|---|
committer | Wolfgang Denk <wd@denx.de> | 2011-04-11 21:00:54 +0200 |
commit | e7b44eddbef88b1a922f8d82088ba236aad01caf (patch) | |
tree | 4ba07d5e3ed3d4b9992afb6f2a47f556aa3d6741 /drivers/mtd/spi/stmicro.c | |
parent | 6163045bcd276818d9ad6bdd1bf36ddcd60d014b (diff) |
sf: unify erase functions
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Diffstat (limited to 'drivers/mtd/spi/stmicro.c')
-rw-r--r-- | drivers/mtd/spi/stmicro.c | 59 |
1 files changed, 3 insertions, 56 deletions
diff --git a/drivers/mtd/spi/stmicro.c b/drivers/mtd/spi/stmicro.c index 02da8b2fdc5..494005c4a47 100644 --- a/drivers/mtd/spi/stmicro.c +++ b/drivers/mtd/spi/stmicro.c @@ -220,62 +220,9 @@ static int stmicro_write(struct spi_flash *flash, int stmicro_erase(struct spi_flash *flash, u32 offset, size_t len) { struct stmicro_spi_flash *stm = to_stmicro_spi_flash(flash); - unsigned long sector_size; - size_t actual; - int ret; - u8 cmd[4]; - - /* - * This function currently uses sector erase only. - * probably speed things up by using bulk erase - * when possible. - */ - - sector_size = stm->params->page_size * stm->params->pages_per_sector; - - if (offset % sector_size || len % sector_size) { - debug("SF: Erase offset/length not multiple of sector size\n"); - return -1; - } - - len /= sector_size; - cmd[0] = CMD_M25PXX_SE; - cmd[2] = 0x00; - cmd[3] = 0x00; - - ret = spi_claim_bus(flash->spi); - if (ret) { - debug("SF: Unable to claim SPI bus\n"); - return ret; - } - - ret = 0; - for (actual = 0; actual < len; actual++) { - cmd[1] = offset >> 16; - offset += sector_size; - - ret = spi_flash_cmd(flash->spi, CMD_M25PXX_WREN, NULL, 0); - if (ret < 0) { - debug("SF: Enabling Write failed\n"); - break; - } - - ret = spi_flash_cmd_write(flash->spi, cmd, 4, NULL, 0); - if (ret < 0) { - debug("SF: STMicro page erase failed\n"); - break; - } - - ret = spi_flash_cmd_wait_ready(flash, SPI_FLASH_PAGE_ERASE_TIMEOUT); - if (ret) - break; - } - - debug("SF: STMicro: Successfully erased %u bytes @ 0x%x\n", - len * sector_size, offset); - - spi_release_bus(flash->spi); - return ret; + return spi_flash_cmd_erase(flash, CMD_M25PXX_SE, + stm->params->page_size * stm->params->pages_per_sector, + offset, len); } struct spi_flash *spi_flash_probe_stmicro(struct spi_slave *spi, u8 * idcode) |