linux-kernel - Re: [PATCH v2 1/2] spi: cadence-quadspi: drop cqspi_set

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Message-ID: <20220427061042.6xmzg7i6ozhlbhzi@ti.com>
Date:   Wed, 27 Apr 2022 11:40:42 +0530
From:   Pratyush Yadav <p.yadav@...com>
To:     Matthias Schiffer <matthias.schiffer@...tq-group.com>
CC:     Mark Brown <broonie@...nel.org>,
        Tudor Ambarus <tudor.ambarus@...rochip.com>,
        Vignesh Raghavendra <vigneshr@...com>,
        Ramuthevar Vadivel Murugan 
        <vadivel.muruganx.ramuthevar@...ux.intel.com>,
        <linux-spi@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 1/2] spi: cadence-quadspi: drop cqspi_set_protocol()

On 20/04/22 05:56PM, Matthias Schiffer wrote:
> As suggested, this removes the whole cqspi_set_protocol() function, as it
> is not actually needed:
> 
> - Checks for unsupported operations are already handled by supports_op(),
>   removing the need to distinguish DTR and non-DTR modes in the buswidth
>   setup
> - supports_op() ensures that the DTR flags match for all relevant parts of
>   an operation, so op->cmd.dtr can be used instead of copying the flag to
>   the cqspi_flash_pdata
> - The logic in cqspi_set_protocol() is moved to cqspi_calc_rdreg() and
>   cqspi_write_setup() (with a helper macro CQSPI_OP_WIDTH())
> 
> The helper macro checks nbytes instead of buswidth for 0, for consistency
> with supports_op() etc.
> 
> Suggested-by: Pratyush Yadav <p.yadav@...com>
> Signed-off-by: Matthias Schiffer <matthias.schiffer@...tq-group.com>

I know the patch has already been applied, but FWIW,

Reviewed-by: Pratyush Yadav <p.yadav@...com>

Also did some basic testing on the latest linux-next, which has your 
patches. Things seem to work fine.

-- 
Regards,
Pratyush Yadav
Texas Instruments Inc.