linux-kernel - Re: [PATCH v1 00/14] mtd: spi-nor: move vendor specific code into vendor modules

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Message-ID: <f7b01151-5d25-661b-6eca-5f18aa81ce73@microchip.com>
Date:   Thu, 17 Feb 2022 07:31:16 +0000
From:   <Tudor.Ambarus@...rochip.com>
To:     <michael@...le.cc>, <linux-mtd@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, <yaliang.wang@...driver.com>
CC:     <p.yadav@...com>, <miquel.raynal@...tlin.com>, <richard@....at>,
        <vigneshr@...com>
Subject: Re: [PATCH v1 00/14] mtd: spi-nor: move vendor specific code into
 vendor modules

+ Yaliang,

might be interested in reviewing/testing this, as there were some similar
patches submitted a while ago:

https://patchwork.ozlabs.org/project/linux-mtd/list/?series=237043

Cheers,
ta

On 2/2/22 16:58, Michael Walle wrote:
> EXTERNAL EMAIL: Do not click links or open attachments unless you know the content is safe
> 
> It turns out that most of the special status register handling is
> specific for a particular vendor. I.e. Xilinx has some different
> opcodes for the status register read, Micron has an additional FSR
> register and Spansion has these flags integrated into the SR.
> 
> Create a callback to ready() where a flash chip can register its
> own function. This will let us move all the vendor specific stuff
> out of the core into the vendor modules.
> 
> Please note that this is only compile-time tested.
> 
> For sake of consistency and better readability of the code flow,
> I also converted the setup() callback to be optional.
> 
> Michael Walle (14):
>   mtd: spi-nor: export more function to be used in vendor modules
>   mtd: spi-nor: slightly refactor the spi_nor_setup()
>   mtd: spi-nor: allow a flash to define its own ready() function
>   mtd: spi-nor: move all xilinx specifics into xilinx.c
>   mtd: spi-nor: xilinx: rename vendor specific functions and defines
>   mtd: spi-nor: xilinx: correct the debug message
>   mtd: spi-nor: move all micron-st specifics into micron-st.c
>   mtd: spi-nor: micron-st: convert USE_FSR to a manufacturer flag
>   mtd: spi-nor: micron-st: fix micron_st prefix
>   mtd: spi-nor: micron-st: rename vendor specific functions and defines
>   mtd: spi-nor: spansion: slightly rework control flow in late_init()
>   mtd: spi-nor: move all spansion specifics into spansion.c
>   mtd: spi-nor: spansion: convert USE_CLSR to a manufacturer flag
>   mtd: spi-nor: renumber flags
> 
>  drivers/mtd/spi-nor/core.c      | 265 ++------------------------------
>  drivers/mtd/spi-nor/core.h      |  70 ++++-----
>  drivers/mtd/spi-nor/micron-st.c | 225 ++++++++++++++++++++++-----
>  drivers/mtd/spi-nor/spansion.c  | 133 ++++++++++++----
>  drivers/mtd/spi-nor/xilinx.c    |  79 +++++++++-
>  include/linux/mtd/spi-nor.h     |  18 ---
>  6 files changed, 417 insertions(+), 373 deletions(-)
> 
> --
> 2.30.2
>