Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67;
MIME-Version: 1.0
References: <20191127052935.1719897-1-anarsoul@gmail.com> <20191127052935.1719897-2-anarsoul@gmail.com>
 <20191127111419.z5hfu5soxceiivg6@core.my.home> <20191127173547.ch3pcv3lxgdcrfnu@gilmour.lan>
 <CAEExFWvG-Af4qtUrxQV4ssNQCVQAmpXfxB+92wX+6ZxUNfX-Jw@mail.gmail.com>
In-Reply-To: <CAEExFWvG-Af4qtUrxQV4ssNQCVQAmpXfxB+92wX+6ZxUNfX-Jw@mail.gmail.com>
From:   Vasily Khoruzhick <anarsoul@gmail.com>
Date:   Wed, 27 Nov 2019 11:48:32 -0800
Message-ID: <CA+E=qVcdwQO3Y8ismmBN-gRVNMs1Thx+TPLqstKM9fYf2_0qFQ@mail.gmail.com>
Subject: Re: [PATCH v6 1/7] thermal: sun8i: add thermal driver for H6/H5/H3/A64/A83T/R40
To:     Frank Lee <tiny.windzz@gmail.com>
Cc:     Maxime Ripard <mripard@kernel.org>,
        Zhang Rui <rui.zhang@intel.com>,
        Eduardo Valentin <edubezval@gmail.com>,
        Daniel Lezcano <daniel.lezcano@linaro.org>,
        Amit Kucheria <amit.kucheria@verdurent.com>,
        Rob Herring <robh+dt@kernel.org>,
        Mark Rutland <mark.rutland@arm.com>,
        Chen-Yu Tsai <wens@csie.org>,
        Mauro Carvalho Chehab <mchehab+samsung@kernel.org>,
        "David S. Miller" <davem@davemloft.net>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Linux PM <linux-pm@vger.kernel.org>,
        devicetree <devicetree@vger.kernel.org>,
        Linux ARM <linux-arm-kernel@lists.infradead.org>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Content-Type: text/plain; charset="UTF-8"
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

On Wed, Nov 27, 2019 at 11:44 AM Frank Lee <tiny.windzz@gmail.com> wrote:
>
> Hello Vasily,
>
> Thank you very much for your work on this.
> This looks good to me.

Thanks!

> By the way, I would like to ask comments about adding the following code.

Can we add it as follow up patch? I don't think that I have a device
with working suspend to test it and I'm hesitant to add any code that
I can't test.

>
> diff --git a/drivers/thermal/sun8i_thermal.c b/drivers/thermal/sun8i_thermal.c
> index c0ed60782b11..579dde5e0701 100644
> --- a/drivers/thermal/sun8i_thermal.c
> +++ b/drivers/thermal/sun8i_thermal.c
> @@ -629,11 +629,63 @@ static const struct of_device_id of_ths_match[] = {
>  };
>  MODULE_DEVICE_TABLE(of, of_ths_match);
>
> +static int __maybe_unused sun8i_thermal_suspend(struct device *dev)
> +{
> + struct ths_device *tmdev; = dev_get_drvdata(dev);
> +
> + clk_disable(tmdev->mod_clk);
> + clk_disable(tmdev->bus_clk);
> +
> + reset_control_assert(tmdev->reset);
> +
> + return 0;
> +}
> +
> +static int __maybe_unused sun8i_thermal_resume(struct device *dev)
> +{
> + struct ths_device *tmdev; = dev_get_drvdata(dev);
> + int error;
> +
> + error = reset_control_deassert(tmdev->reset);
> + if (error)
> + return error;
> +
> + error = clk_enable(tmdev->bus_clk);
> + if (error)
> + goto assert_reset;
> +
> + clk_set_rate(tmdev->mod_clk, 24000000);
> + error = clk_enable(tmdev->mod_clk);
> + if (error)
> + goto bus_disable;
> +
> + sun8i_ths_calibrate(tmdev);
> +
> + ret = tmdev->chip->init(tmdev);
> + if (ret)
> + goto mod_disable;
> +
> + return 0;
> +
> +mod_disable:
> + clk_disable(tmdev->mod_clk);
> +bus_disable:
> + clk_disable(tmdev->bus_clk);
> +assert_reset:
> + reset_control_assert(tmdev->reset);
> +
> + return 0;
> +}
> +
> +static SIMPLE_DEV_PM_OPS(sun8i_thermal_pm_ops,
> + sun8i_thermal_suspend, sun8i_thermal_resume);
> +
>  static struct platform_driver ths_driver = {
>   .probe = sun8i_ths_probe,
>   .remove = sun8i_ths_remove,
>   .driver = {
>   .name = "sun8i-thermal",
> + .pm = &sun8i_thermal_pm_ops,
>   .of_match_table = of_ths_match,
>   },
>  };
>
> Yangtao