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From:   Andy Shevchenko <andy.shevchenko@gmail.com>
Date:   Tue, 5 Jul 2022 21:12:03 +0200
Message-ID: <CAHp75VdnvxhR7yB2sroH4y8VgU3ORnCC3wH4CEKYCX1XSPvMxg@mail.gmail.com>
Subject: Re: [PATCH] iio: light: cm32181: Add PM support
To:     Kai-Heng Feng <kai.heng.feng@canonical.com>
Cc:     Kevin Tsai <ktsai@capellamicro.com>,
        Jonathan Cameron <jic23@kernel.org>,
        Lars-Peter Clausen <lars@metafoo.de>,
        Hans de Goede <hdegoede@redhat.com>,
        linux-iio <linux-iio@vger.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
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On Tue, Jul 5, 2022 at 2:31 PM Kai-Heng Feng
<kai.heng.feng@canonical.com> wrote:
>
> The read on in_illuminance_input keeps at 0 after system sleep.
>
> So add proper suspend and resume callback to make the sensor keep
> working after system sleep.

...

> +static int cm32181_resume(struct device *dev)
> +{
> +       struct i2c_client *client = to_i2c_client(dev);
> +       struct cm32181_chip *cm32181 = iio_priv(i2c_get_clientdata(client));

Simply device_get_drvdata(dev) ?

> +       return i2c_smbus_write_word_data(client, CM32181_REG_ADDR_CMD,
> +                                        cm32181->conf_regs[CM32181_REG_ADDR_CMD]);
> +}

-- 
With Best Regards,
Andy Shevchenko