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mtd: spi-nor: move SECT_4K_PMC special handling

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The SECT_4K_PMC flag will set a device specific opcode for the 4k sector
erase. Instead of handling it in the core, we can move it to a
late_init(). In that late init, loop over all erase types, look for the
4k size and replace the opcode.

Signed-off-by: Michael Walle <michael@walle.cc>
Signed-off-by: Pratyush Yadav <p.yadav@ti.com>
Link: https://lore.kernel.org/r/20220418112650.2791459-1-michael@walle.cc
This commit is contained in:
Michael Walle 2022-04-18 13:26:50 +02:00 committed by Pratyush Yadav
parent 03c765b0e3
commit 77d4ac6d38
3 changed files with 22 additions and 10 deletions
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7
drivers/mtd/spi-nor/core.c
View File

@ -2382,12 +2382,7 @@ static void spi_nor_no_sfdp_init_params(struct spi_nor *nor)
*/
erase_mask = 0;
i = 0;
if (no_sfdp_flags & SECT_4K_PMC) {
erase_mask |= BIT(i);
spi_nor_set_erase_type(&map->erase_type[i], 4096u,
SPINOR_OP_BE_4K_PMC);
i++;
} else if (no_sfdp_flags & SECT_4K) {
if (no_sfdp_flags & SECT_4K) {
erase_mask |= BIT(i);
spi_nor_set_erase_type(&map->erase_type[i], 4096u,
SPINOR_OP_BE_4K);

2
drivers/mtd/spi-nor/core.h
View File

@ -457,7 +457,6 @@ struct spi_nor_fixups {
* flags are used together with the SPI_NOR_SKIP_SFDP flag.
* SPI_NOR_SKIP_SFDP: skip parsing of SFDP tables.
* SECT_4K: SPINOR_OP_BE_4K works uniformly.
* SECT_4K_PMC: SPINOR_OP_BE_4K_PMC works uniformly.
* SPI_NOR_DUAL_READ: flash supports Dual Read.
* SPI_NOR_QUAD_READ: flash supports Quad Read.
* SPI_NOR_OCTAL_READ: flash supports Octal Read.
@ -505,7 +504,6 @@ struct flash_info {
u8 no_sfdp_flags;
#define SPI_NOR_SKIP_SFDP BIT(0)
#define SECT_4K BIT(1)
#define SECT_4K_PMC BIT(2)
#define SPI_NOR_DUAL_READ BIT(3)
#define SPI_NOR_QUAD_READ BIT(4)
#define SPI_NOR_OCTAL_READ BIT(5)

23
drivers/mtd/spi-nor/issi.c
View File

@ -29,6 +29,21 @@ static const struct spi_nor_fixups is25lp256_fixups = {
.post_bfpt = is25lp256_post_bfpt_fixups,
};
static void pm25lv_nor_late_init(struct spi_nor *nor)
{
struct spi_nor_erase_map *map = &nor->params->erase_map;
int i;
/* The PM25LV series has a different 4k sector erase opcode */
for (i = 0; i < SNOR_ERASE_TYPE_MAX; i++)
if (map->erase_type[i].size == 4096)
map->erase_type[i].opcode = SPINOR_OP_BE_4K_PMC;
}
static const struct spi_nor_fixups pm25lv_nor_fixups = {
.late_init = pm25lv_nor_late_init,
};
static const struct flash_info issi_nor_parts[] = {
/* ISSI */
{ "is25cd512", INFO(0x7f9d20, 0, 32 * 1024, 2)
@ -62,9 +77,13 @@ static const struct flash_info issi_nor_parts[] = {
/* PMC */
{ "pm25lv512", INFO(0, 0, 32 * 1024, 2)
NO_SFDP_FLAGS(SECT_4K_PMC) },
NO_SFDP_FLAGS(SECT_4K)
.fixups = &pm25lv_nor_fixups
},
{ "pm25lv010", INFO(0, 0, 32 * 1024, 4)
NO_SFDP_FLAGS(SECT_4K_PMC) },
NO_SFDP_FLAGS(SECT_4K)
.fixups = &pm25lv_nor_fixups
},
{ "pm25lq032", INFO(0x7f9d46, 0, 64 * 1024, 64)
NO_SFDP_FLAGS(SECT_4K) },
};