netdev - Re: [PATCH v2 03/13] net: Replace all spi->chip_select and spi->cs

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Date:   Fri, 20 Jan 2023 11:30:01 +0100
From:   Lukasz Stelmach <l.stelmach@...sung.com>
To:     Amit Kumar Mahapatra <amit.kumar-mahapatra@....com>
Cc:     <davem@...emloft.net>, <kuba@...nel.org>, <pabeni@...hat.com>,
        <netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 03/13] net: Replace all spi->chip_select and
 spi->cs_gpiod references with function call

It was <2023-01-20 pią 00:23>, when Amit Kumar Mahapatra wrote:
> Supporting multi-cs in spi drivers would require the chip_select & cs_gpiod
> members of struct spi_device to be an array. But changing the type of these
> members to array would break the spi driver functionality. To make the
> transition smoother introduced four new APIs to get/set the
> spi->chip_select & spi->cs_gpiod and replaced all spi->chip_select and
> spi->cs_gpiod references with get or set API calls.
> While adding multi-cs support in further patches the chip_select & cs_gpiod
> members of the spi_device structure would be converted to arrays & the
> "idx" parameter of the APIs would be used as array index i.e.,
> spi->chip_select[idx] & spi->cs_gpiod[idx] respectively.
>
> Signed-off-by: Amit Kumar Mahapatra <amit.kumar-mahapatra@....com>
> ---
>  drivers/net/ethernet/adi/adin1110.c            | 2 +-
>  drivers/net/ethernet/asix/ax88796c_main.c      | 2 +-
>  drivers/net/ethernet/davicom/dm9051.c          | 2 +-
>  drivers/net/ethernet/qualcomm/qca_debug.c      | 2 +-
>  drivers/net/ieee802154/ca8210.c                | 2 +-
>  drivers/net/wan/slic_ds26522.c                 | 2 +-
>  drivers/net/wireless/marvell/libertas/if_spi.c | 2 +-
>  drivers/net/wireless/silabs/wfx/bus_spi.c      | 2 +-
>  drivers/net/wireless/st/cw1200/cw1200_spi.c    | 2 +-
>  9 files changed, 9 insertions(+), 9 deletions(-)
>

Acked-by: Łukasz Stelmach <l.stelmach@...sung.com>

[...]

> diff --git a/drivers/net/ethernet/asix/ax88796c_main.c b/drivers/net/ethernet/asix/ax88796c_main.c
> index 21376c79f671..e551ffaed20d 100644
> --- a/drivers/net/ethernet/asix/ax88796c_main.c
> +++ b/drivers/net/ethernet/asix/ax88796c_main.c
> @@ -1006,7 +1006,7 @@ static int ax88796c_probe(struct spi_device *spi)
>  	ax_local->mdiobus->parent = &spi->dev;
>  
>  	snprintf(ax_local->mdiobus->id, MII_BUS_ID_SIZE,
> -		 "ax88796c-%s.%u", dev_name(&spi->dev), spi->chip_select);
> +		 "ax88796c-%s.%u", dev_name(&spi->dev), spi_get_chipselect(spi, 0));
>  
>  	ret = devm_mdiobus_register(&spi->dev, ax_local->mdiobus);
>  	if (ret < 0) {

[...]


-- 
Łukasz Stelmach
Samsung R&D Institute Poland
Samsung Electronics

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