linux-kernel - Re: [PATCH v2 02/13] spi: Replace all spi->chip_select and spi->cs

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Message-ID: <90084f5f-6e9d-7b17-5487-3b4b01bd5e7d@ti.com>
Date:   Mon, 23 Jan 2023 19:50:50 +0530
From:   Dhruva Gole <d-gole@...com>
To:     Amit Kumar Mahapatra <amit.kumar-mahapatra@....com>,
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Subject: Re: [PATCH v2 02/13] spi: Replace all spi->chip_select and
 spi->cs_gpiod references with function call

Hi Amit,

On 20/01/23 00:23, 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/spi/spi-cadence-quadspi.c |  5 +++--
>  drivers/spi/spi-cadence-xspi.c    |  4 ++--
>  drivers/spi/spi-cadence.c         |  4 ++--
[...]

For SPI Cadence QSPI,
Reviewed-by: Dhruva Gole <d-gole@...com>

-- 
Best regards,
Dhruva Gole
Texas Instruments Incorporated