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mtd: spi-nor: core: Move generic method to core - micron_st_nor_set_4byte_addr_mode

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This method is described in JESD216 BFPT[SFDP_DWORD(16)], BIT(30) and
BIT(22). Move the method to core.

Reviewed-by: Michael Walle <michael@walle.cc>
Link: https://lore.kernel.org/r/20230331074606.3559258-2-tudor.ambarus@linaro.org
Signed-off-by: Tudor Ambarus <tudor.ambarus@linaro.org>
This commit is contained in:
Tudor Ambarus 2023-03-31 07:45:57 +00:00
parent f0a499acb4
commit 076aa4eac8
No known key found for this signature in database
GPG Key ID: 4B554F47A58D14E9
3 changed files with 25 additions and 24 deletions
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24
drivers/mtd/spi-nor/core.c
View File

@ -538,6 +538,30 @@ int spi_nor_set_4byte_addr_mode(struct spi_nor *nor, bool enable)
return ret;
}
/**
* micron_st_nor_set_4byte_addr_mode() - Set 4-byte address mode for ST and
* Micron flashes.
* @nor: pointer to 'struct spi_nor'.
* @enable: true to enter the 4-byte address mode, false to exit the 4-byte
* address mode.
*
* Return: 0 on success, -errno otherwise.
*/
int micron_st_nor_set_4byte_addr_mode(struct spi_nor *nor, bool enable)
{
int ret;
ret = spi_nor_write_enable(nor);
if (ret)
return ret;
ret = spi_nor_set_4byte_addr_mode(nor, enable);
if (ret)
return ret;
return spi_nor_write_disable(nor);
}
/**
* spansion_set_4byte_addr_mode() - Set 4-byte address mode for Spansion
* flashes.

1
drivers/mtd/spi-nor/core.h
View File

@ -648,6 +648,7 @@ void spi_nor_spimem_setup_op(const struct spi_nor *nor,
int spi_nor_write_enable(struct spi_nor *nor);
int spi_nor_write_disable(struct spi_nor *nor);
int spi_nor_set_4byte_addr_mode(struct spi_nor *nor, bool enable);
int micron_st_nor_set_4byte_addr_mode(struct spi_nor *nor, bool enable);
int spi_nor_wait_till_ready(struct spi_nor *nor);
int spi_nor_global_block_unlock(struct spi_nor *nor);
int spi_nor_prep_and_lock(struct spi_nor *nor);

24
drivers/mtd/spi-nor/micron-st.c
View File

@ -301,30 +301,6 @@ static const struct flash_info st_nor_parts[] = {
{ "m25px80", INFO(0x207114, 0, 64 * 1024, 16) },
};
/**
* micron_st_nor_set_4byte_addr_mode() - Set 4-byte address mode for ST and
* Micron flashes.
* @nor: pointer to 'struct spi_nor'.
* @enable: true to enter the 4-byte address mode, false to exit the 4-byte
* address mode.
*
* Return: 0 on success, -errno otherwise.
*/
static int micron_st_nor_set_4byte_addr_mode(struct spi_nor *nor, bool enable)
{
int ret;
ret = spi_nor_write_enable(nor);
if (ret)
return ret;
ret = spi_nor_set_4byte_addr_mode(nor, enable);
if (ret)
return ret;
return spi_nor_write_disable(nor);
}
/**
* micron_st_nor_read_fsr() - Read the Flag Status Register.
* @nor: pointer to 'struct spi_nor'