diff options
Diffstat (limited to 'drivers/mtd/spi-nor/core.h')
| -rw-r--r-- | drivers/mtd/spi-nor/core.h | 71 |
1 files changed, 67 insertions, 4 deletions
diff --git a/drivers/mtd/spi-nor/core.h b/drivers/mtd/spi-nor/core.h index 4a3f7f150b5d..28a2e0be97a3 100644 --- a/drivers/mtd/spi-nor/core.h +++ b/drivers/mtd/spi-nor/core.h @@ -188,6 +188,46 @@ struct spi_nor_locking_ops { }; /** + * struct spi_nor_otp_organization - Structure to describe the SPI NOR OTP regions + * @len: size of one OTP region in bytes. + * @base: start address of the OTP area. + * @offset: offset between consecutive OTP regions if there are more + * than one. + * @n_regions: number of individual OTP regions. + */ +struct spi_nor_otp_organization { + size_t len; + loff_t base; + loff_t offset; + unsigned int n_regions; +}; + +/** + * struct spi_nor_otp_ops - SPI NOR OTP methods + * @read: read from the SPI NOR OTP area. + * @write: write to the SPI NOR OTP area. + * @lock: lock an OTP region. + * @is_locked: check if an OTP region of the SPI NOR is locked. + */ +struct spi_nor_otp_ops { + int (*read)(struct spi_nor *nor, loff_t addr, size_t len, u8 *buf); + int (*write)(struct spi_nor *nor, loff_t addr, size_t len, + const u8 *buf); + int (*lock)(struct spi_nor *nor, unsigned int region); + int (*is_locked)(struct spi_nor *nor, unsigned int region); +}; + +/** + * struct spi_nor_otp - SPI NOR OTP grouping structure + * @org: OTP region organization + * @ops: OTP access ops + */ +struct spi_nor_otp { + const struct spi_nor_otp_organization *org; + const struct spi_nor_otp_ops *ops; +}; + +/** * struct spi_nor_flash_parameter - SPI NOR flash parameters and settings. * Includes legacy flash parameters and settings that can be overwritten * by the spi_nor_fixups hooks, or dynamically when parsing the JESD216 @@ -208,6 +248,7 @@ struct spi_nor_locking_ops { * higher index in the array, the higher priority. * @erase_map: the erase map parsed from the SFDP Sector Map Parameter * Table. + * @otp_info: describes the OTP regions. * @octal_dtr_enable: enables SPI NOR octal DTR mode. * @quad_enable: enables SPI NOR quad mode. * @set_4byte_addr_mode: puts the SPI NOR in 4 byte addressing mode. @@ -219,6 +260,7 @@ struct spi_nor_locking_ops { * e.g. different opcodes, specific address calculation, * page size, etc. * @locking_ops: SPI NOR locking methods. + * @otp: SPI NOR OTP methods. */ struct spi_nor_flash_parameter { u64 size; @@ -232,6 +274,7 @@ struct spi_nor_flash_parameter { struct spi_nor_pp_command page_programs[SNOR_CMD_PP_MAX]; struct spi_nor_erase_map erase_map; + struct spi_nor_otp otp; int (*octal_dtr_enable)(struct spi_nor *nor, bool enable); int (*quad_enable)(struct spi_nor *nor); @@ -261,8 +304,7 @@ struct spi_nor_fixups { void (*default_init)(struct spi_nor *nor); int (*post_bfpt)(struct spi_nor *nor, const struct sfdp_parameter_header *bfpt_header, - const struct sfdp_bfpt *bfpt, - struct spi_nor_flash_parameter *params); + const struct sfdp_bfpt *bfpt); void (*post_sfdp)(struct spi_nor *nor); }; @@ -339,6 +381,8 @@ struct flash_info { * power-up in a write-protected state. */ + const struct spi_nor_otp_organization otp_org; + /* Part specific fixup hooks. */ const struct spi_nor_fixups *fixups; }; @@ -393,6 +437,14 @@ struct flash_info { .addr_width = 3, \ .flags = SPI_NOR_NO_FR | SPI_NOR_XSR_RDY, +#define OTP_INFO(_len, _n_regions, _base, _offset) \ + .otp_org = { \ + .len = (_len), \ + .base = (_base), \ + .offset = (_offset), \ + .n_regions = (_n_regions), \ + }, + /** * struct spi_nor_manufacturer - SPI NOR manufacturer object * @name: manufacturer name @@ -444,6 +496,7 @@ int spi_nor_read_sr(struct spi_nor *nor, u8 *sr); int spi_nor_read_cr(struct spi_nor *nor, u8 *cr); int spi_nor_write_sr(struct spi_nor *nor, const u8 *sr, size_t len); int spi_nor_write_sr_and_check(struct spi_nor *nor, u8 sr1); +int spi_nor_write_16bit_cr_and_check(struct spi_nor *nor, u8 cr); int spi_nor_xread_sr(struct spi_nor *nor, u8 *sr); ssize_t spi_nor_read_data(struct spi_nor *nor, loff_t from, size_t len, @@ -451,6 +504,12 @@ ssize_t spi_nor_read_data(struct spi_nor *nor, loff_t from, size_t len, ssize_t spi_nor_write_data(struct spi_nor *nor, loff_t to, size_t len, const u8 *buf); +int spi_nor_otp_read_secr(struct spi_nor *nor, loff_t addr, size_t len, u8 *buf); +int spi_nor_otp_write_secr(struct spi_nor *nor, loff_t addr, size_t len, + const u8 *buf); +int spi_nor_otp_lock_sr2(struct spi_nor *nor, unsigned int region); +int spi_nor_otp_is_locked_sr2(struct spi_nor *nor, unsigned int region); + int spi_nor_hwcaps_read2cmd(u32 hwcaps); u8 spi_nor_convert_3to4_read(u8 opcode); void spi_nor_set_read_settings(struct spi_nor_read_command *read, @@ -470,8 +529,12 @@ void spi_nor_init_uniform_erase_map(struct spi_nor_erase_map *map, int spi_nor_post_bfpt_fixups(struct spi_nor *nor, const struct sfdp_parameter_header *bfpt_header, - const struct sfdp_bfpt *bfpt, - struct spi_nor_flash_parameter *params); + const struct sfdp_bfpt *bfpt); + +void spi_nor_init_default_locking_ops(struct spi_nor *nor); +void spi_nor_try_unlock_all(struct spi_nor *nor); +void spi_nor_register_locking_ops(struct spi_nor *nor); +void spi_nor_otp_init(struct spi_nor *nor); static struct spi_nor __maybe_unused *mtd_to_spi_nor(struct mtd_info *mtd) { |