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mtd: spi-nor: Add s3an_post_sfdp_fixups() 

s3an_nor_scan() was overriding the opcode selection done in
spi_nor_default_setup(). Set nor->setup() method in order to
avoid the unnecessary call to spi_nor_default_setup().

Now that the call to spi_nor_default_setup() is skipped, set
mtd.erasesize to nor->info->sector_size, as it was when
spi_nor_select_erase() was called.

No dummy byte is required for the S3AN's Random Read command (0x03),
so no need to set nor->read_dummy.

Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Reviewed-by: Vignesh Raghavendra <vigneshr@ti.com>
This commit is contained in:
Tudor Ambarus 2019-08-24 12:07:16 +00:00
parent 2d7ff858e5
commit 641edddb4f
No known key found for this signature in database
GPG Key ID: 4B554F47A58D14E9
1 changed files with 11 additions and 7 deletions
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18
drivers/mtd/spi-nor/spi-nor.c
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@ -2718,7 +2718,8 @@ static int spi_nor_check(struct spi_nor *nor)
return 0;
}
static int s3an_nor_scan(struct spi_nor *nor)
static int s3an_nor_setup(struct spi_nor *nor,
const struct spi_nor_hwcaps *hwcaps)
{
int ret;
@ -2753,6 +2754,7 @@ static int s3an_nor_scan(struct spi_nor *nor)
} else {
/* Flash in Default addressing mode */
nor->params.convert_addr = s3an_convert_addr;
nor->mtd.erasesize = nor->info->sector_size;
}
return 0;
@ -4530,6 +4532,11 @@ static void spansion_post_sfdp_fixups(struct spi_nor *nor)
nor->mtd.erasesize = nor->info->sector_size;
}
static void s3an_post_sfdp_fixups(struct spi_nor *nor)
{
nor->params.setup = s3an_nor_setup;
}
/**
* spi_nor_post_sfdp_fixups() - Updates the flash's parameters and settings
* after SFDP has been parsed (is also called for SPI NORs that do not
@ -4551,6 +4558,9 @@ static void spi_nor_post_sfdp_fixups(struct spi_nor *nor)
break;
}
if (nor->info->flags & SPI_S3AN)
s3an_post_sfdp_fixups(nor);
if (nor->info->fixups && nor->info->fixups->post_sfdp)
nor->info->fixups->post_sfdp(nor);
}
@ -4899,12 +4909,6 @@ int spi_nor_scan(struct spi_nor *nor, const char *name,
return -EINVAL;
}
if (info->flags & SPI_S3AN) {
ret = s3an_nor_scan(nor);
if (ret)
return ret;
}
/* Send all the required SPI flash commands to initialize device */
ret = spi_nor_init(nor);
if (ret)