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| author | Tudor Ambarus <tudor.ambarus@microchip.com> | 2022-04-20 13:34:20 +0300 |
|---|---|---|
| committer | Pratyush Yadav <p.yadav@ti.com> | 2022-04-27 14:57:35 +0530 |
| commit | 86b6b55ffbbc0df2c8e3c1d62fd12388737225f6 (patch) | |
| tree | 6d67fc40993ac0dd65fe507035063e733e1d0b7f /drivers/mtd/spi-nor/core.h | |
| parent | bffabd1c727d663adf67ea762acc0e57164b3281 (diff) | |
| download | linux-86b6b55ffbbc0df2c8e3c1d62fd12388737225f6.tar.bz2 | |
mtd: spi-nor: core: Introduce method for RDID op
RDID is used in the core to auto detect the flash, but also by some
manufacturer drivers that contain flashes that support Octal DTR mode,
so that they can read the flash ID after the switch to Octal DTR was made
to test if the switch was successful. Introduce a core method for RDID op
to avoid code duplication.
Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Signed-off-by: Pratyush Yadav <p.yadav@ti.com>
Reviewed-by: Michael Walle <michael@walle.cc>
Link: https://lore.kernel.org/r/20220420103427.47867-5-tudor.ambarus@microchip.com
Diffstat (limited to 'drivers/mtd/spi-nor/core.h')
| -rw-r--r-- | drivers/mtd/spi-nor/core.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/mtd/spi-nor/core.h b/drivers/mtd/spi-nor/core.h index b7fd760e3b47..f952061d5c24 100644 --- a/drivers/mtd/spi-nor/core.h +++ b/drivers/mtd/spi-nor/core.h @@ -11,6 +11,13 @@ #define SPI_NOR_MAX_ID_LEN 6 +/* Standard SPI NOR flash operations. */ +#define SPI_NOR_READID_OP(naddr, ndummy, buf, len) \ + SPI_MEM_OP(SPI_MEM_OP_CMD(SPINOR_OP_RDID, 0), \ + SPI_MEM_OP_ADDR(naddr, 0, 0), \ + SPI_MEM_OP_DUMMY(ndummy, 0), \ + SPI_MEM_OP_DATA_IN(len, buf, 0)) + enum spi_nor_option_flags { SNOR_F_HAS_SR_TB = BIT(0), SNOR_F_NO_OP_CHIP_ERASE = BIT(1), @@ -534,6 +541,8 @@ void spi_nor_unlock_and_unprep(struct spi_nor *nor); int spi_nor_sr1_bit6_quad_enable(struct spi_nor *nor); int spi_nor_sr2_bit1_quad_enable(struct spi_nor *nor); int spi_nor_sr2_bit7_quad_enable(struct spi_nor *nor); +int spi_nor_read_id(struct spi_nor *nor, u8 naddr, u8 ndummy, u8 *id, + enum spi_nor_protocol reg_proto); int spi_nor_read_sr(struct spi_nor *nor, u8 *sr); int spi_nor_sr_ready(struct spi_nor *nor); int spi_nor_read_cr(struct spi_nor *nor, u8 *cr); |