diff options
Diffstat (limited to 'drivers/mtd/spi/spi-nor-core.c')
| -rw-r--r-- | drivers/mtd/spi/spi-nor-core.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/drivers/mtd/spi/spi-nor-core.c b/drivers/mtd/spi/spi-nor-core.c index 8dd44c0f1e1..9e85f7d73e0 100644 --- a/drivers/mtd/spi/spi-nor-core.c +++ b/drivers/mtd/spi/spi-nor-core.c @@ -315,6 +315,31 @@ static int spi_nor_write_reg(struct spi_nor *nor, u8 opcode, u8 *buf, int len) return spi_nor_read_write_reg(nor, &op, buf); } +#ifdef CONFIG_SPI_FLASH_SPANSION +static int spansion_read_any_reg(struct spi_nor *nor, u32 addr, u8 dummy, + u8 *val) +{ + struct spi_mem_op op = + SPI_MEM_OP(SPI_MEM_OP_CMD(SPINOR_OP_RDAR, 1), + SPI_MEM_OP_ADDR(nor->addr_width, addr, 1), + SPI_MEM_OP_DUMMY(dummy / 8, 1), + SPI_MEM_OP_DATA_IN(1, NULL, 1)); + + return spi_nor_read_write_reg(nor, &op, val); +} + +static int spansion_write_any_reg(struct spi_nor *nor, u32 addr, u8 val) +{ + struct spi_mem_op op = + SPI_MEM_OP(SPI_MEM_OP_CMD(SPINOR_OP_WRAR, 1), + SPI_MEM_OP_ADDR(nor->addr_width, addr, 1), + SPI_MEM_OP_NO_DUMMY, + SPI_MEM_OP_DATA_OUT(1, NULL, 1)); + + return spi_nor_read_write_reg(nor, &op, &val); +} +#endif + static ssize_t spi_nor_read_data(struct spi_nor *nor, loff_t from, size_t len, u_char *buf) { |