diff options
Diffstat (limited to 'drivers/mtd')
| -rw-r--r-- | drivers/mtd/spi-nor/core.c | 35 | ||||
| -rw-r--r-- | drivers/mtd/spi-nor/core.h | 1 |
2 files changed, 31 insertions, 5 deletions
diff --git a/drivers/mtd/spi-nor/core.c b/drivers/mtd/spi-nor/core.c index b20c690a24d7..1e30737b607b 100644 --- a/drivers/mtd/spi-nor/core.c +++ b/drivers/mtd/spi-nor/core.c @@ -3134,9 +3134,35 @@ static int spi_nor_quad_enable(struct spi_nor *nor) return nor->params->quad_enable(nor); } -static int spi_nor_init(struct spi_nor *nor) +/** + * spi_nor_set_4byte_addr_mode() - Set address mode. + * @nor: pointer to a 'struct spi_nor'. + * @enable: enable/disable 4 byte address mode. + * + * Return: 0 on success, -errno otherwise. + */ +int spi_nor_set_4byte_addr_mode(struct spi_nor *nor, bool enable) { struct spi_nor_flash_parameter *params = nor->params; + int ret; + + ret = params->set_4byte_addr_mode(nor, enable); + if (ret && ret != -ENOTSUPP) + return ret; + + if (enable) { + params->addr_nbytes = 4; + params->addr_mode_nbytes = 4; + } else { + params->addr_nbytes = 3; + params->addr_mode_nbytes = 3; + } + + return 0; +} + +static int spi_nor_init(struct spi_nor *nor) +{ int err; err = spi_nor_octal_dtr_enable(nor, true); @@ -3178,10 +3204,9 @@ static int spi_nor_init(struct spi_nor *nor) */ WARN_ONCE(nor->flags & SNOR_F_BROKEN_RESET, "enabling reset hack; may not recover from unexpected reboots\n"); - err = params->set_4byte_addr_mode(nor, true); - if (err && err != -ENOTSUPP) + err = spi_nor_set_4byte_addr_mode(nor, true); + if (err) return err; - params->addr_mode_nbytes = 4; } return 0; @@ -3300,7 +3325,7 @@ static void spi_nor_restore(struct spi_nor *nor) /* restore the addressing mode */ if (nor->addr_nbytes == 4 && !(nor->flags & SNOR_F_4B_OPCODES) && nor->flags & SNOR_F_BROKEN_RESET) { - ret = nor->params->set_4byte_addr_mode(nor, false); + ret = spi_nor_set_4byte_addr_mode(nor, false); if (ret) /* * Do not stop the execution in the hope that the flash diff --git a/drivers/mtd/spi-nor/core.h b/drivers/mtd/spi-nor/core.h index 8953ddeb8625..ea9033cb0a01 100644 --- a/drivers/mtd/spi-nor/core.h +++ b/drivers/mtd/spi-nor/core.h @@ -651,6 +651,7 @@ int spi_nor_set_4byte_addr_mode_en4b_ex4b(struct spi_nor *nor, bool enable); int spi_nor_set_4byte_addr_mode_wren_en4b_ex4b(struct spi_nor *nor, bool enable); int spi_nor_set_4byte_addr_mode_brwr(struct spi_nor *nor, bool enable); +int spi_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); |