linux-kernel - Re: [PATCH v15] i2c: virtio: add a virtio i2c frontend driver

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Date:   Tue, 27 Jul 2021 10:15:16 +0800
From:   Jie Deng <jie.deng@...el.com>
To:     Arnd Bergmann <arnd@...db.de>
Cc:     Linux I2C <linux-i2c@...r.kernel.org>,
        "open list:DRM DRIVER FOR QEMU'S CIRRUS DEVICE" 
        <virtualization@...ts.linux-foundation.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Wolfram Sang <wsa@...nel.org>,
        Wolfram Sang <wsa+renesas@...g-engineering.com>,
        "Michael S. Tsirkin" <mst@...hat.com>,
        Jason Wang <jasowang@...hat.com>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        yu1.wang@...el.com, conghui.chen@...el.com,
        Viresh Kumar <viresh.kumar@...aro.org>,
        Stefan Hajnoczi <stefanha@...hat.com>,
        gregkh <gregkh@...uxfoundation.org>,
        Vincent Guittot <vincent.guittot@...aro.org>,
        Alex Bennée <alex.bennee@...aro.org>,
        jiedeng@...mni.sjtu.edu.cn
Subject: Re: [PATCH v15] i2c: virtio: add a virtio i2c frontend driver


On 2021/7/23 17:03, Arnd Bergmann wrote:
> On Fri, Jul 23, 2021 at 7:44 AM Jie Deng <jie.deng@...el.com> wrote:
>
>> +
>> +       ret = virtio_i2c_setup_vqs(vi);
>> +       if (ret)
>> +               return ret;
>> +
>> +       vi->adap.owner = THIS_MODULE;
>> +       snprintf(vi->adap.name, sizeof(vi->adap.name),
>> +                "i2c_virtio at virtio bus %d", vdev->index);
>> +       vi->adap.algo = &virtio_algorithm;
>> +       vi->adap.quirks = &virtio_i2c_quirks;
>> +       vi->adap.dev.parent = &vdev->dev;
>> +       i2c_set_adapdata(&vi->adap, vi);
>> +
>> +       /*
>> +        * Setup ACPI node for controlled devices which will be probed through
>> +        * ACPI.
>> +        */
>> +       ACPI_COMPANION_SET(&vi->adap.dev, ACPI_COMPANION(pdev));
> Since there is now a generic way for virtio drivers to link up with OF
> device nodes, maybe this should be handled the same way in the
> virtio core rather than the driver?


I'm currently based on the I2C tree. Has that patch been already merged ？

Anyway, I think we can send an additional patch to remove this line once 
that

"generic way" patch is merged.

Regards,

Jie