Re: [RESEND v5 09/21] mtd: rawnand: Create a new enumeration to describe properly ECC types

[Boris Brezillon <boris.brezillon@xxxxxxxxxxxxx>]

On Tue, 26 May 2020 21:56:21 +0200
Miquel Raynal <miquel.raynal@xxxxxxxxxxx> wrote:

> Now that the misleading mix between ECC engine type and OOB placement
> has been addressed, add a new enumeration to properly define ECC types
> (also called provider or mode).
> 
> Signed-off-by: Miquel Raynal <miquel.raynal@xxxxxxxxxxx>
> Reviewed-by: Boris Brezillon <boris.brezillon@xxxxxxxxxxxxx>
> ---
>  drivers/mtd/nand/raw/nand_base.c |  7 +++++++
>  include/linux/mtd/rawnand.h      | 16 ++++++++++++++++
>  2 files changed, 23 insertions(+)
> 
> diff --git a/drivers/mtd/nand/raw/nand_base.c b/drivers/mtd/nand/raw/nand_base.c
> index 515cd4681660..5c6ab5b93270 100644
> --- a/drivers/mtd/nand/raw/nand_base.c
> +++ b/drivers/mtd/nand/raw/nand_base.c
> @@ -5018,6 +5018,13 @@ static const char * const nand_ecc_modes[] = {
>  	[NAND_ECC_ON_DIE]	= "on-die",
>  };
>  
> +static const char * const nand_ecc_engine_providers[] = {

This table is not used here, are you sure it should be introduced now?

> +	[NAND_ECC_ENGINE_NONE] = "none",
> +	[NAND_ECC_ENGINE_SOFT] = "soft",
> +	[NAND_ECC_ENGINE_CONTROLLER] = "hw",

					^ "on-controller" ?

> +	[NAND_ECC_ENGINE_ON_DIE] = "on-die",
> +};
> +
>  static const char * const nand_ecc_placement[] = {
>  	[NAND_ECC_PLACEMENT_INTERLEAVED] = "interleaved",
>  };
> diff --git a/include/linux/mtd/rawnand.h b/include/linux/mtd/rawnand.h
> index dc909fb977c7..a2078c5f3d21 100644
> --- a/include/linux/mtd/rawnand.h
> +++ b/include/linux/mtd/rawnand.h
> @@ -92,6 +92,22 @@ enum nand_ecc_mode {
>  	NAND_ECC_ON_DIE,
>  };
>  
> +/**
> + * enum nand_ecc_engine_type - NAND ECC engine type/provider
> + * @NAND_ECC_ENGINE_INVALID: Invalid value
> + * @NAND_ECC_ENGINE_NONE: No ECC correction
> + * @NAND_ECC_ENGINE_SOFT: Software ECC correction
> + * @NAND_ECC_ENGINE_CONTROLLER: Hardware controller ECC correction
> + * @NAND_ECC_ENGINE_ON_DIE: On chip hardware ECC correction
> + */
> +enum nand_ecc_engine_type {
> +	NAND_ECC_ENGINE_INVALID,
> +	NAND_ECC_ENGINE_NONE,
> +	NAND_ECC_ENGINE_SOFT,
> +	NAND_ECC_ENGINE_CONTROLLER,
> +	NAND_ECC_ENGINE_ON_DIE,
> +};
> +
>  /**
>   * enum nand_ecc_placement - NAND ECC placement
>   * @NAND_ECC_PLACEMENT_FREE: The driver can decide where to put ECC bytes.


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