Hello!
This series adds support for the mtdblock device, which allows to read/write data block by block. For example, it can now be used for BCB or Android AB command:
$ bcb load mtd 0 part_name
Tested only on SPI NAND, so bind is made only for SPI NAND drivers.
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Changes V1 -> V2 [1]:
- Drop patch [2]. - Add warning if bind NAND mtdblock device. - Move documentation of mtdblock implementation from commit message to the source code. - Remove __maybe_unused from mtd partition functions description. - Use blk_enabled() instead of #ifdefs.
Changes V2 -> V3 [2]:
- Rebased over [3]. - Rename mtd_bread/bwrite -> mtd_blk_read/write. - Fix GPL-2.0 license short name definiton in headers. - Add empty line after MTD_ENTRY_NUMBERS define.
Changes V3 -> V4 [4]:
- Fix build warnings: use LBAF printf format string for lbaint_t types.
Changes V4 -> V5 [5]:
- Rebased over u-boot/master. - Fix build errors and warnings if CONFIG_BLK isn't enabled. - Fix failed tests in cases is mtdblock device isn't binded.
Changes V5 -> V6 [6]:
- Rebased over u-boot/master. - Fix build errors when CONFIG_MTD isn't enabled. - Use auto blk device devnum generation when call blk_create_devicef (pass -1 parameter instead of dev_seq(dev)).
Changes V6 -> V7 [7]:
- Rebased over u-boot/master. - Introduce CONFIG_MTD_BLOCK which is disabled by default.
Links:
- [1] https://lore.kernel.org/all/20240227100441.1811047-1-avromanov@salutedevices... - [2] https://lore.kernel.org/all/20240227100441.1811047-5-avromanov@salutedevices... - [3] https://lore.kernel.org/u-boot/20240403114047.84030-1-heinrich.schuchardt@ca... - [4] https://lore.kernel.org/all/20240404105813.1520732-1-avromanov@salutedevices... - [5] https://lore.kernel.org/all/20240524102920.2631731-1-avromanov@salutedevices... - [6] https://lore.kernel.org/all/20240603155702.1840464-1-avromanov@salutedevices... - [7] https://lore.kernel.org/all/20240626104440.2811686-1-avromanov@salutedevices...
Alexey Romanov (3): disk: support MTD partitions drivers: introduce mtdblock abstraction spinand: bind mtdblock
disk/part.c | 3 +- drivers/block/blk-uclass.c | 1 + drivers/mtd/Kconfig | 9 ++ drivers/mtd/Makefile | 1 + drivers/mtd/mtdblock.c | 227 ++++++++++++++++++++++++++++++++++++ drivers/mtd/mtdpart.c | 76 ++++++++++++ drivers/mtd/nand/spi/core.c | 21 ++++ include/linux/mtd/mtd.h | 25 ++++ include/part.h | 3 + 9 files changed, 365 insertions(+), 1 deletion(-) create mode 100644 drivers/mtd/mtdblock.c