Re: [RESEND PATCH v3 07/20] mtd: spi_nor: Move manufacturer quad_enable() in ->default_init()

Vignesh Raghavendra
2019-08-27T05:54:24Z

On 26/08/19 5:38 PM, Tudor.Ambarus@microchip.com wrote:
> From: Tudor Ambarus <tudor.ambarus@microchip.com>
>
> The goal is to move the quad_enable manufacturer specific init in the
> nor->manufacturer->fixups->default_init()
>
> The legacy quad_enable() implementation is spansion_quad_enable(),
> select this method by default.
>
> Set specific manufacturer fixups->default_init() hooks to overwrite
> the default quad_enable() implementation when needed.
>
> Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
> Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
> ---

Reviewed-by: Vignesh Raghavendra <vigneshr@ti.com>

Regards
Vignesh

> v3: collect R-b
>
> drivers/mtd/spi-nor/spi-nor.c | 48 ++++++++++++++++++++++++++-----------------
> 1 file changed, 29 insertions(+), 19 deletions(-)
>
> diff --git a/drivers/mtd/spi-nor/spi-nor.c b/drivers/mtd/spi-nor/spi-nor.c
> index 3dbbfe34d1d2..2a239531704a 100644
> --- a/drivers/mtd/spi-nor/spi-nor.c
> +++ b/drivers/mtd/spi-nor/spi-nor.c
> @@ -4150,13 +4150,38 @@ static int spi_nor_parse_sfdp(struct spi_nor *nor,
> return err;
> }
>
> +static void macronix_set_default_init(struct spi_nor *nor)
> +{
> + nor->params.quad_enable = macronix_quad_enable;
> +}
> +
> +static void st_micron_set_default_init(struct spi_nor *nor)
> +{
> + nor->params.quad_enable = NULL;
> +}
> +
> /**
> * spi_nor_manufacturer_init_params() - Initialize the flash's parameters and
> - * settings based on ->default_init() hook.
> + * settings based on MFR register and ->default_init() hook.
> * @nor: pointer to a 'struct spi-nor'.
> */
> static void spi_nor_manufacturer_init_params(struct spi_nor *nor)
> {
> + /* Init flash parameters based on MFR */
> + switch (JEDEC_MFR(nor->info)) {
> + case SNOR_MFR_MACRONIX:
> + macronix_set_default_init(nor);
> + break;
> +
> + case SNOR_MFR_ST:
> + case SNOR_MFR_MICRON:
> + st_micron_set_default_init(nor);
> + break;
> +
> + default:
> + break;
> + }
> +
> if (nor->info->fixups && nor->info->fixups->default_init)
> nor->info->fixups->default_init(nor);
> }
> @@ -4168,6 +4193,9 @@ static int spi_nor_init_params(struct spi_nor *nor)
> const struct flash_info *info = nor->info;
> u8 i, erase_mask;
>
> + /* Initialize legacy flash parameters and settings. */
> + params->quad_enable = spansion_quad_enable;
> +
> /* Set SPI NOR sizes. */
> params->size = (u64)info->sector_size * info->n_sectors;
> params->page_size = info->page_size;
> @@ -4233,24 +4261,6 @@ static int spi_nor_init_params(struct spi_nor *nor)
> SPINOR_OP_SE);
> spi_nor_init_uniform_erase_map(map, erase_mask, params->size);
>
> - /* Select the procedure to set the Quad Enable bit. */
> - if (params->hwcaps.mask & (SNOR_HWCAPS_READ_QUAD |
> - SNOR_HWCAPS_PP_QUAD)) {
> - switch (JEDEC_MFR(info)) {
> - case SNOR_MFR_MACRONIX:
> - params->quad_enable = macronix_quad_enable;
> - break;
> -
> - case SNOR_MFR_ST:
> - case SNOR_MFR_MICRON:
> - break;
> -
> - default:
> - /* Kept only for backward compatibility purpose. */
> - params->quad_enable = spansion_quad_enable;
> - break;
> - }
> - }
>
> spi_nor_manufacturer_init_params(nor);
>
>

--
Regards
Vignesh