diff options
| -rw-r--r-- | drivers/mtd/spi/spi-nor-core.c | 31 |
1 files changed, 30 insertions, 1 deletions
diff --git a/drivers/mtd/spi/spi-nor-core.c b/drivers/mtd/spi/spi-nor-core.c index 2c3116ee530..83d7fe44ee1 100644 --- a/drivers/mtd/spi/spi-nor-core.c +++ b/drivers/mtd/spi/spi-nor-core.c @@ -903,6 +903,30 @@ static int read_bar(struct spi_nor *nor, const struct flash_info *info) } #endif +/** + * spi_nor_erase_chip() - Erase the entire flash memory. + * @nor: pointer to 'struct spi_nor'. + * + * Return: 0 on success, -errno otherwise. + */ +static int spi_nor_erase_chip(struct spi_nor *nor) +{ + struct spi_mem_op op = + SPI_MEM_OP(SPI_MEM_OP_CMD(SPINOR_OP_CHIP_ERASE, 0), + SPI_MEM_OP_NO_ADDR, + SPI_MEM_OP_NO_DUMMY, + SPI_MEM_OP_NO_DATA); + int ret; + + spi_nor_setup_op(nor, &op, nor->write_proto); + + ret = spi_mem_exec_op(nor->spi, &op); + if (ret) + return ret; + + return nor->mtd.size; +} + /* * Initiate the erasure of a single sector. Returns the number of bytes erased * on success, a negative error code on error. @@ -974,7 +998,12 @@ static int spi_nor_erase(struct mtd_info *mtd, struct erase_info *instr) if (ret < 0) goto erase_err; - ret = spi_nor_erase_sector(nor, addr); + if (len == mtd->size && + !(nor->flags & SNOR_F_NO_OP_CHIP_ERASE)) { + ret = spi_nor_erase_chip(nor); + } else { + ret = spi_nor_erase_sector(nor, addr); + } if (ret < 0) goto erase_err; |