From: Hsin-Yi Wang <hsinyi@chromium.org>
To: Qii Wang <qii.wang@mediatek.com>
Cc: Nicolas Boichat <drinkcat@chromium.org>,
Alexandru M Stan <amstan@chromium.org>,
Wolfram Sang <wsa@the-dreams.de>, Jun Gao <jun.gao@mediatek.com>,
lkml <linux-kernel@vger.kernel.org>,
linux-mediatek@lists.infradead.org, linux-i2c@vger.kernel.org,
Matthias Brugger <matthias.bgg@gmail.com>,
Yingjoe Chen <yingjoe.chen@mediatek.com>,
Thomas Gleixner <tglx@linutronix.de>,
"moderated list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE"
<linux-arm-kernel@lists.infradead.org>
Subject: Re: [PATCH v2] i2c: mediatek: disable zero-length transfers for mt8183
Date: Fri, 23 Aug 2019 16:13:29 +0800 [thread overview]
Message-ID: <CAJMQK-gb+A9dwyMqMcA5yaaXak9no8_=urwK0XbLnNAEGyZ_hg@mail.gmail.com> (raw)
In-Reply-To: <1566547772.19935.2.camel@mhfsdcap03>
On Fri, Aug 23, 2019 at 4:09 PM Qii Wang <qii.wang@mediatek.com> wrote:
> >
> > static u32 mtk_i2c_functionality(struct i2c_adapter *adap)
> > {
> > - return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL;
> > + if (adap->quirks->flags & I2C_AQ_NO_ZERO_LEN)
> > + return I2C_FUNC_I2C |
> > + (I2C_FUNC_SMBUS_EMUL & ~I2C_FUNC_SMBUS_QUICK);
> > + else
> > + return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL;
>
> It can be removed?
See previous discussion: https://patchwork.kernel.org/patch/10814391/#22484435
but not all SoC's quirks has I2C_AQ_NO_ZERO_LEN.
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next prev parent reply other threads:[~2019-08-23 8:14 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-22 9:45 [PATCH v2] i2c: mediatek: disable zero-length transfers for mt8183 Hsin-Yi Wang
2019-08-23 8:09 ` Qii Wang
2019-08-23 8:13 ` Hsin-Yi Wang [this message]
2019-08-24 3:23 ` Qii Wang
2019-08-30 13:08 ` Wolfram Sang
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