linux-kernel - Re: [PATCH v3 2/4] i2c: mpc: Interrupt driven transfer

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Message-ID: <20210413122258.GC1553@kunai>
Date:   Tue, 13 Apr 2021 14:22:58 +0200
From:   Wolfram Sang <wsa@...nel.org>
To:     Chris Packham <chris.packham@...iedtelesis.co.nz>
Cc:     Andy Shevchenko <andy.shevchenko@...il.com>,
        linux-i2c@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 2/4] i2c: mpc: Interrupt driven transfer

On Tue, Apr 13, 2021 at 05:09:53PM +1200, Chris Packham wrote:
> The fsl-i2c controller will generate an interrupt after every byte
> transferred. Make use of this interrupt to drive a state machine which
> allows the next part of a transfer to happen as soon as the interrupt is
> received. This is particularly helpful with SMBUS devices like the LM81
> which will timeout if we take too long between bytes in a transfer.
> 
> Signed-off-by: Chris Packham <chris.packham@...iedtelesis.co.nz>

Thanks for the update. I'll wait a little, because IIRC Andy wanted to
review.


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