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Subject[PATCH 0/7] mtd: spi-nor: move manuf out of the core - batch 1
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From: Tudor Ambarus <tudor.ambarus@microchip.com>

The scope of the "mtd: spi-nor: move manuf out of the core" batches,
is to move all manufacturer specific code out of the spi-nor core.

In the quest of removing the manufacturer specific code from the spi-nor
core, we want to impose a timeline/priority on how the flash parameters
are updated. As of now. the flash parameters initialization logic is as
following:

a/ default flash parameters init in spi_nor_init_params()
b/ manufacturer specific flash parameters updates, split across entire
spi-nor core code
c/ flash parameters updates based on SFDP tables
d/ post BFPT flash parameter updates

With the "mtd: spi-nor: move manuf out of the core" batches, we want to
impose the following sequence of calls:

1/ spi-nor core legacy flash parameters init:
spi_nor_default_init_params()

2/ MFR-based manufacturer flash parameters init:
nor->manufacturer->fixups->default_init()

3/ specific flash_info tweeks done when decisions can not be done just on
MFR:
nor->info->fixups->default_init()

4/ SFDP tables flash parameters init - SFDP knows better:
spi_nor_sfdp_init_params()

5/ post SFDP tables flash parameters updates - in case manufacturers get
the serial flash tables wrong or incomplete.
nor->info->fixups->post_sfdp()
The later can be extended to nor->manufacturer->fixups->post_sfdp() if
needed.

Setting of flash paramters will no longer be spread interleaved accross
the spi-nor core, there will be a clear separation on who and when will update
the flash parameters.

Tested on sst26vf064b with atmel-quadspi SPIMEM driver.

These batches are based of Boris Brezillon's work at:
https://patchwork.ozlabs.org/project/linux-mtd/list/?series=80353

These batches depend on m25p80 code move and a recent fix:
https://patchwork.ozlabs.org/project/linux-mtd/list/?series=120475
https://patchwork.ozlabs.org/project/linux-mtd/list/?series=122416

You can find my developing branch (not stable) at:
https://github.com/ambarus/linux-0day/tree/spi-nor/manuf-drv

Boris Brezillon (3):
mtd: spi-nor: Add a default_init() fixup hook for gd25q256
mtd: spi-nor: Create a ->set_4byte() method
mtd: spi-nor: Rework the SPI NOR lock/unlock logic

Tudor Ambarus (4):
mtd: spi-nor: Add default_init() hook to tweak flash parameters
mtd: spi_nor: Rework quad_enable()
mtd: spi-nor: Split spi_nor_init_params()
mtd: spi-nor: Rework the disabling of write protection at init

drivers/mtd/spi-nor/spi-nor.c | 417 ++++++++++++++++++++++++------------------
include/linux/mtd/spi-nor.h | 23 ++-
2 files changed, 260 insertions(+), 180 deletions(-)

--
2.9.5

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