linux-kernel - Re: [PATCH] i2c-imx.c: Synthesize end of transaction events without idle interrupts

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Message-ID: <20210201221351.GG24315@kunai>
Date:   Mon, 1 Feb 2021 23:13:51 +0100
From:   Wolfram Sang <wsa@...-dreams.de>
To:     Kevin Paul Herbert <kph@...tinasystems.com>
Cc:     biwen.li@....com, leoyang.li@....com, linux@...pel-privat.de,
        kernel@...gutronix.de, shawnguo@...nel.org, s.hauer@...gutronix.de,
        festevam@...il.com, aisheng.dong@....com, xiaoning.wang@....com,
        o.rempel@...gutronix.de, linux-i2c@...r.kernel.org,
        linux-kernel@...r.kernel.org, jiafei.pan@....com,
        xiaobo.xie@....com, linux-arm-kernel@...ts.infradead.org,
        biwen.li@....nxp.com
Subject: Re: [PATCH] i2c-imx.c: Synthesize end of transaction events without
 idle interrupts

On Tue, Dec 22, 2020 at 11:48:50AM -0800, Kevin Paul Herbert wrote:
> Only the Layerscape SoCs have interrupts on bus idle, which facilitate
> sending events which complete slave bus transactions.
> 
> Add support for synthesizing missing events. If we see a master request,
> or a newly addressed slave request, if the last event sent to the backend
> was I2C_SLAVE_READ_REQUESTED, send the backend a I2C_SLAVE_READ_PROCESSED
> followed by I2C_SLAVE_STOP. For all other events, send an I2C_SLAVE_STOP.
> 
> Signed-off-by: Kevin Paul Herbert <kph@...tinasystems.com>

Applied to for-next, thanks!


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