linux-kernel - Re: [PATCH 2/4] drm/bridge: anx7625: Use pm_runtime_force

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Message-ID: <20220706023040.GB2357796@anxtwsw-Precision-3640-Tower>
Date:   Wed, 6 Jul 2022 10:30:40 +0800
From:   Xin Ji <xji@...logixsemi.com>
To:     Hsin-Yi Wang <hsinyi@...omium.org>
Cc:     Robert Foss <robert.foss@...aro.org>,
        Andrzej Hajda <andrzej.hajda@...el.com>,
        Neil Armstrong <narmstrong@...libre.com>,
        Laurent Pinchart <Laurent.pinchart@...asonboard.com>,
        Jonas Karlman <jonas@...boo.se>,
        Jernej Skrabec <jernej.skrabec@...il.com>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Sam Ravnborg <sam@...nborg.org>,
        Thomas Zimmermann <tzimmermann@...e.de>,
        Maxime Ripard <maxime@...no.tech>,
        dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/4] drm/bridge: anx7625: Use
 pm_runtime_force_suspend(resume)

Hi Hsin-Yi, thanks for your patch, looks good to me.

Reviewed-by: Xin Ji <xji@...logixsemi.com>

Thanks,
Xin
On Thu, Jun 30, 2022 at 12:05:48AM +0800, Hsin-Yi Wang wrote:
> There's no need to check for IRQ or disable it in suspend.
> 
> Use pm_runtime_force_suspend(resume) to make sure anx7625 is powered off
> correctly. Make the system suspend/resume and pm runtime suspend/resume
> more consistant.
> 
> Signed-off-by: Hsin-Yi Wang <hsinyi@...omium.org>
> ---
>  drivers/gpu/drm/bridge/analogix/anx7625.c | 33 ++---------------------
>  1 file changed, 2 insertions(+), 31 deletions(-)
> 
> diff --git a/drivers/gpu/drm/bridge/analogix/anx7625.c b/drivers/gpu/drm/bridge/analogix/anx7625.c
> index f89e8151475f7..478f5af381c7d 100644
> --- a/drivers/gpu/drm/bridge/analogix/anx7625.c
> +++ b/drivers/gpu/drm/bridge/analogix/anx7625.c
> @@ -2504,38 +2504,9 @@ static int __maybe_unused anx7625_runtime_pm_resume(struct device *dev)
>  	return 0;
>  }
>  
> -static int __maybe_unused anx7625_resume(struct device *dev)
> -{
> -	struct anx7625_data *ctx = dev_get_drvdata(dev);
> -
> -	if (!ctx->pdata.intp_irq)
> -		return 0;
> -
> -	if (!pm_runtime_enabled(dev) || !pm_runtime_suspended(dev)) {
> -		enable_irq(ctx->pdata.intp_irq);
> -		anx7625_runtime_pm_resume(dev);
> -	}
> -
> -	return 0;
> -}
> -
> -static int __maybe_unused anx7625_suspend(struct device *dev)
> -{
> -	struct anx7625_data *ctx = dev_get_drvdata(dev);
> -
> -	if (!ctx->pdata.intp_irq)
> -		return 0;
> -
> -	if (!pm_runtime_enabled(dev) || !pm_runtime_suspended(dev)) {
> -		anx7625_runtime_pm_suspend(dev);
> -		disable_irq(ctx->pdata.intp_irq);
> -	}
> -
> -	return 0;
> -}
> -
>  static const struct dev_pm_ops anx7625_pm_ops = {
> -	SET_SYSTEM_SLEEP_PM_OPS(anx7625_suspend, anx7625_resume)
> +	SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
> +				pm_runtime_force_resume)
>  	SET_RUNTIME_PM_OPS(anx7625_runtime_pm_suspend,
>  			   anx7625_runtime_pm_resume, NULL)
>  };
> -- 
> 2.37.0.rc0.161.g10f37bed90-goog