diff options
| author | Boris Brezillon <boris.brezillon@bootlin.com> | 2019-08-24 10:17:20 +0300 |
|---|---|---|
| committer | Tudor Ambarus <tudor.ambarus@microchip.com> | 2019-08-28 12:40:29 +0300 |
| commit | 36499596280359d34a0663afe0abbf34d80862e8 (patch) | |
| tree | 53eb5f588a93d341d4589e1dc570104a17409d70 /include | |
| parent | 92094ebc385ef52d45e27d23e9a7c32abf8df44e (diff) | |
| download | linux-36499596280359d34a0663afe0abbf34d80862e8.tar.gz linux-36499596280359d34a0663afe0abbf34d80862e8.tar.bz2 linux-36499596280359d34a0663afe0abbf34d80862e8.zip | |
mtd: spi-nor: Add a ->convert_addr() method
In order to separate manufacturer quirks from the core we need to get
rid of all the manufacturer specific flags, like the
SNOR_F_S3AN_ADDR_DEFAULT one.
This can easily be replaced by a ->convert_addr() hook, which when
implemented will provide the core with an easy way to convert an
absolute address into something the flash understands.
Right now the only user are the S3AN chips, but other manufacturers
can implement it if needed.
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Reviewed-by: Vignesh Raghavendra <vigneshr@ti.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/mtd/spi-nor.h | 17 |
1 files changed, 10 insertions, 7 deletions
diff --git a/include/linux/mtd/spi-nor.h b/include/linux/mtd/spi-nor.h index ea3bcac54dc2..35aad92a4ff8 100644 --- a/include/linux/mtd/spi-nor.h +++ b/include/linux/mtd/spi-nor.h @@ -237,13 +237,12 @@ enum spi_nor_option_flags { SNOR_F_USE_FSR = BIT(0), SNOR_F_HAS_SR_TB = BIT(1), SNOR_F_NO_OP_CHIP_ERASE = BIT(2), - SNOR_F_S3AN_ADDR_DEFAULT = BIT(3), - SNOR_F_READY_XSR_RDY = BIT(4), - SNOR_F_USE_CLSR = BIT(5), - SNOR_F_BROKEN_RESET = BIT(6), - SNOR_F_4B_OPCODES = BIT(7), - SNOR_F_HAS_4BAIT = BIT(8), - SNOR_F_HAS_LOCK = BIT(9), + SNOR_F_READY_XSR_RDY = BIT(3), + SNOR_F_USE_CLSR = BIT(4), + SNOR_F_BROKEN_RESET = BIT(5), + SNOR_F_4B_OPCODES = BIT(6), + SNOR_F_HAS_4BAIT = BIT(7), + SNOR_F_HAS_LOCK = BIT(8), }; /** @@ -496,6 +495,9 @@ struct spi_nor_locking_ops { * Table. * @quad_enable: enables SPI NOR quad mode. * @set_4byte: puts the SPI NOR in 4 byte addressing mode. + * @convert_addr: converts an absolute address into something the flash + * will understand. Particularly useful when pagesize is + * not a power-of-2. * @locking_ops: SPI NOR locking methods. */ struct spi_nor_flash_parameter { @@ -510,6 +512,7 @@ struct spi_nor_flash_parameter { int (*quad_enable)(struct spi_nor *nor); int (*set_4byte)(struct spi_nor *nor, bool enable); + u32 (*convert_addr)(struct spi_nor *nor, u32 addr); const struct spi_nor_locking_ops *locking_ops; }; |