linux-kernel - Re: [PATCH v2 15/41] mtd: spi-nor: add SNOR_ID() and SNOR

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Message-ID: <863ba1a1-ebd0-b544-705c-72295316140c@linaro.org>
Date:   Wed, 6 Sep 2023 10:28:02 +0300
From:   Tudor Ambarus <tudor.ambarus@...aro.org>
To:     Michael Walle <mwalle@...nel.org>,
        Pratyush Yadav <pratyush@...nel.org>,
        Miquel Raynal <miquel.raynal@...tlin.com>,
        Richard Weinberger <richard@....at>,
        Vignesh Raghavendra <vigneshr@...com>
Cc:     linux-kernel@...r.kernel.org, linux-mtd@...ts.infradead.org
Subject: Re: [PATCH v2 15/41] mtd: spi-nor: add SNOR_ID() and SNOR_OTP()



On 22.08.2023 10:09, Michael Walle wrote:
> After all the preparation, it is now time to introduce the new macros to
> specify flashes in our database: SNOR_ID() and SNOR_OTP(). An flash_info
> entry might now look like:
>     {
>         .id = SNOR_ID(0xef, 0x60, 0x16),
>         .otp = SNOR_OTP(256, 3, 0x1000, 0x1000),
>         .flags = SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB,
>     }
> 
> Signed-off-by: Michael Walle <mwalle@...nel.org>


Reviewed-by: Tudor Ambarus <tudor.ambarus@...aro.org>


> ---
>  drivers/mtd/spi-nor/core.h | 14 ++++++++++++++
>  1 file changed, 14 insertions(+)
> 
> diff --git a/drivers/mtd/spi-nor/core.h b/drivers/mtd/spi-nor/core.h
> index c22f5cf65a58..420e5ca2cfe1 100644
> --- a/drivers/mtd/spi-nor/core.h
> +++ b/drivers/mtd/spi-nor/core.h
> @@ -559,6 +559,20 @@ struct flash_info {
>  	const struct spi_nor_fixups *fixups;
>  };
>  
> +#define SNOR_ID(...)							\
> +	(&(const struct spi_nor_id){					\
> +		.bytes = (const u8[]){ __VA_ARGS__ },			\
> +		.len = sizeof((u8[]){ __VA_ARGS__ }),			\
> +	})
> +
> +#define SNOR_OTP(_len, _n_regions, _base, _offset)			\
> +	(&(const struct spi_nor_otp_organization){			\
> +		.len = (_len),						\
> +		.base = (_base),					\
> +		.offset = (_offset),					\
> +		.n_regions = (_n_regions),				\
> +	})
> +
>  #define SPI_NOR_ID_2ITEMS(_id) ((_id) >> 8) & 0xff, (_id) & 0xff
>  #define SPI_NOR_ID_3ITEMS(_id) ((_id) >> 16) & 0xff, SPI_NOR_ID_2ITEMS(_id)
>  
>