linux-kernel - Re: [PATCH 4/6] mtd: spi_nor: Add nor->setup() method

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Date:   Thu, 1 Aug 2019 08:36:52 +0200
From:   Boris Brezillon <boris.brezillon@...labora.com>
To:     <Tudor.Ambarus@...rochip.com>
Cc:     <marek.vasut@...il.com>, <vigneshr@...com>, <dwmw2@...radead.org>,
        <computersforpeace@...il.com>, <miquel.raynal@...tlin.com>,
        <richard@....at>, <linux-mtd@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 4/6] mtd: spi_nor: Add nor->setup() method

On Wed, 31 Jul 2019 09:12:14 +0000
<Tudor.Ambarus@...rochip.com> wrote:


>  static inline bool spi_nor_protocol_is_dtr(enum spi_nor_protocol proto)
>  {
>  	return !!(proto & SNOR_PROTO_IS_DTR);
> @@ -384,6 +522,7 @@ struct flash_info;
>   *                      useful when pagesize is not a power-of-2
>   * @disable_write_protection: [FLASH-SPECIFIC] disable write protection during
>   *                            power-up
> + * @setup:		[FLASH-SPECIFIC] configure the spi-nor memory

Might be worth giving a example of the type of configuration that can
be done here.

The patch looks good otherwise.

Reviewed-by: Boris Brezillon <boris.brezillon@...labora.com>

>   *			completely locked

Looks like this 'completely locked' is a leftover from a previous move
(lock functions were move to a separate _ops struct IIRC). Can you fix
that?

>   * @priv:		the private data
>   */
> @@ -427,6 +566,9 @@ struct spi_nor {
>  	int (*set_4byte)(struct spi_nor *nor, bool enable);
>  	u32 (*convert_addr)(struct spi_nor *nor, u32 addr);
>  	int (*disable_write_protection)(struct spi_nor *nor);
> +	int (*setup)(struct spi_nor *nor,
> +		     const struct spi_nor_flash_parameter *params,
> +		     const struct spi_nor_hwcaps *hwcaps);
>  
>  	const struct spi_nor_locking_ops *locking_ops;
>  
> @@ -486,81 +628,6 @@ static inline struct device_node *spi_nor_get_flash_node(struct spi_nor *nor)
>  }
>