Re: [PATCH v6 1/7] thermal: sun8i: add thermal driver for H6/H5/H3/A64/A83T/R40

[Vasily Khoruzhick <anarsoul@gmail.com>]

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