sf: unify erase functions

[people/ms/u-boot.git] / drivers / mtd / spi / stmicro.c

diff --git a/drivers/mtd/spi/stmicro.c b/drivers/mtd/spi/stmicro.c
index 02da8b2fdc5c09a116b680a0d3a12c2fb5d1fbda..494005c4a4718b0e8e4932d19eee9b300fb080c1 100644 (file)
--- 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)