Re: [PATCH v9 0/6] mtd: Add a SPI NAND driver

[Miquel Raynal <miquel.raynal@bootlin.com>]

Hi Boris,

Boris Brezillon <boris.brezillon@bootlin.com> wrote on Fri, 22 Jun 2018
14:28:22 +0200:

> Hello,
> 
> Not much has changed in this v9 except for the addition of the macronix
> driver. I mainly fixed bugs/issues reported by Miquel.
> 
> Mark, Rob, Geert, I dropped the controversial changes in the DT
> bindings patch, since it's not something specific to SPI NAND, this
> applies to SPI memory devices in general.
> 
> Thanks,
> 
> Boris
> 
> v9 changes:
> - add support for 2 SPI NANDs from Macronix
> - a few fixes and improvements (see the changelog in each patch)
> - drop the doc describing generic SPI device props in the DT binding
> 
> v8 changes:
> - dropped patch 1 which has been applied
> - fix various bugs in the core (see changelog in patch 1)
> - add a commit message to patch 4
> 
> v7 changes:
> - Use the spi-mem interface
> - Add support for on-die ECC
> - Add support for Winbond W25M02GV chip
> 
> v6 changes:
> - includes generic NAND framework patches in series
> - rebase on nand/next (commit 6076fd1e9d879521f7082a5e22185b71e480b777)
> - remove on-die ECC support
> - remove devm_free() since everything allocated by devm_kmalloc() will be
>   automatically freed when device is released
> - add comment header for structs in spinand.h
> - remove spinand_register()/unregister(), call spinand_detect() in
>   spinand_init() and only expose spinand_init()/cleanup()
> - add nand_release_bbt() in bbt.c and use it in nand_cleanup() and
>   spinand_cleanup()
> - use BIT(n) instead (1 << n) in macro of spinand.h
> - rename spinand_alloc() to devm_spinand_alloc()
> - name lables in better way
> - fix some typos
> - add empty lines between code blocks
> 
> v5 changes:
> - rebase patch on nand/next with Boris's generic NAND framework patches[3]
> - replace pr_xxx() with dev_xxx()
> - replace kzalloc()i/kfree() with devm_kzalloc()/devm_kfree()
> - rename spinand_op_init() to spinand_init_op() for consistency
> - remove command opcode in function comments
> - use BIT(n) instead (1 << n) in macro
> - remove manufactures.c and put spinand_manufacturers table in core.c
> - change spinand_write_reg() u8 *buf argument to u8 value,
>   since the length is always 1
> - remove spinand_manufacture->detect() check, since it is always != NULL
> - alloc spinand_ecc_engine struct in vendor.c when using on-die ECC
>   (for hardware ECC, it should be in controllers/*.c)
> - add comment header for struct spinand_op
> - fix timeout bug in spinand_wait(), thanks for Arnaud's debug
> - make spinand_manufacturers const
> - add ecc_engine_ops pointer in struct micron_spinand_info
> - make controller->cap assignment right with SPI_TX/RX_QUAD/DUAL flag
> 
> v4 changes:
> - initialize struct mtd_oob_ops to 0 in bbt.c
> - rename new added helper in nand.h to nand_check_xxxx()
> - add struct mtd_oob_ops consistency check in nand_check_oob_ops()
> - add dataleft in struct nand_page_iter instead of offs
> - remove spinand_manufacturers->ops->detect() check since it is mandatory
> - remove spinand_set_manufacturer_ops() and do the job in
>   spinand_manufacturer_detect()
> - move .priv out of struct spinand_controller
> - add spinand_alloc/free/register/unregister() and make
>   spinand_detect/init() static
> - make BBT be configured by device tree
> - chip->id.data stores raw ID directly
> - refine device info print message after detect success
> - add struct mtd_layout_ops pointer in struct micron_spinand_info
> - remove micron_spinand_init() and do its job in micron_spinand_detect()
> - fix BBT block cannot be erased bug
> 
> v3 changes:
> - rebase patch on 4.11-rc1[2]
> - change read ID method. read 4 bytes ID out then let ->detect() of each
>   manufacutre driver to decode ID and detect the device.
> - make SPI NAND id table private to each manufacutre driver
> - fix coding style to make checkpatch.pl happy
> - update the MAINTAINERS file for spi nand code
> - add nand_size() helper in nand.h
> - use nand_for_each_page() helper in spinand_do_read/write_ops()
> - create helper to check boundaries in generic NAND code and use it
>   in SPI NAND core
> - rename spinand_base.c to core.c
> - manufactures' drivers expose spinand_manufacturer struct instead of
>   spinand_manufacturer_ops struct to keep Manufacture ID macro in
>   manufactures' drivers and rename spinand_ids.c to manufacture.c
> - rename spinand_micron.c to micron.c
> - rename chips/ directory to controllers/
> - rename generic_spi.c to generic-spi.c
> - replace ->build_column_addr() and ->get_dummy() hooks with ->prepare_op() in
>   spinand_manufacturer_ops struct
> - rename __spinand_erase() to spinand_erase()
> - rename spinand_erase() to spinand_erase_skip_bbt()
> - rename spinand_scan_ident() to spinand_detect()
> - rename spinand_scan_tail() to spinand_init()
> - move non detect related code from spinand_detect() to spinand_init()
> - remove spinand_fill_nandd, assign nand->ops in spinand_detect()
> - merge v2 patch 3(bad block support) and patch 4(BBT support)
> - drop getchip parameter, remove spinand_get/remove_device(), take the lock
>   by caller directly
> - fix function comment headers
> - use nand_bbt_is_initialized() helper
> - replace spinand_ecc_engine and spinand_controller object in spinand_device
>   struct with pointer
> - replace struct spinand_manufacturer_ops pointer in spinand_device struct
>   with spinand_manufacturer struct
> 
> v2 changes:
> - replace "spi_nand" with "spinand".
> - rename spi nand related structs for better understanding.
> - introduce spi nand controller, manufacturer and ecc_engine struct.
> - add spi nand manufacturer initialization function refer to Boris's
>   manuf-init branch.
> - remove NAND_SKIP_BBTSCAN from series. Add it later when enabling HW ECC.
> - reorganize series according to Boris's suggestion.
> 
> Boris Brezillon (2):
>   dt-bindings: Add bindings for SPI NAND devices
>   mtd: spinand: Add initial support for the MX35LF1GE4AB chip
> 
> Frieder Schrempf (1):
>   mtd: spinand: Add initial support for Winbond W25M02GV
> 
> Miquel Raynal (1):
>   mtd: spinand: macronix: Add support for MX35LF2GE4AB
> 
> Peter Pan (2):
>   mtd: nand: Add core infrastructure to support SPI NANDs
>   mtd: spinand: Add initial support for Micron MT29F2G01ABAGD
> 
>  Documentation/devicetree/bindings/mtd/spi-nand.txt |    5 +
>  drivers/mtd/nand/Kconfig                           |    1 +
>  drivers/mtd/nand/Makefile                          |    1 +
>  drivers/mtd/nand/spi/Kconfig                       |    7 +
>  drivers/mtd/nand/spi/Makefile                      |    3 +
>  drivers/mtd/nand/spi/core.c                        | 1168 ++++++++++++++++++++
>  drivers/mtd/nand/spi/macronix.c                    |  144 +++
>  drivers/mtd/nand/spi/micron.c                      |  133 +++
>  drivers/mtd/nand/spi/winbond.c                     |  141 +++
>  include/linux/mtd/spinand.h                        |  421 +++++++
>  include/linux/spi/spi-mem.h                        |    4 +-
>  11 files changed, 2027 insertions(+), 1 deletion(-)
>  create mode 100644 Documentation/devicetree/bindings/mtd/spi-nand.txt
>  create mode 100644 drivers/mtd/nand/spi/Kconfig
>  create mode 100644 drivers/mtd/nand/spi/Makefile
>  create mode 100644 drivers/mtd/nand/spi/core.c
>  create mode 100644 drivers/mtd/nand/spi/macronix.c
>  create mode 100644 drivers/mtd/nand/spi/micron.c
>  create mode 100644 drivers/mtd/nand/spi/winbond.c
>  create mode 100644 include/linux/mtd/spinand.h
> 

Series applied.

Thank you very much!
Miquèl

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