linux-kernel - Re: [PATCH v2 09/20] alienware-wmi: Add a state container for thermal control methods

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Message-ID: <a4bb4c1f-a41a-48bd-b7aa-9b9428637a27@gmx.de>
Date: Thu, 2 Jan 2025 17:19:45 +0100
From: Armin Wolf <W_Armin@....de>
To: Kurt Borja <kuurtb@...il.com>, platform-driver-x86@...r.kernel.org
Cc: Dell.Client.Kernel@...l.com, hdegoede@...hat.com,
 ilpo.jarvinen@...ux.intel.com, linux-kernel@...r.kernel.org,
 mario.limonciello@....com
Subject: Re: [PATCH v2 09/20] alienware-wmi: Add a state container for thermal
 control methods

Am 29.12.24 um 20:44 schrieb Kurt Borja:

> Refactor all thermal control methods to use the newly defined awcc_priv
> state container instead of global variables.
>
> Reviewed-by: Armin Wolf <W_Armin@....de>
> Signed-off-by: Kurt Borja <kuurtb@...il.com>
> ---
>   drivers/platform/x86/dell/alienware-wmi.c | 66 ++++++++++++++++-------
>   1 file changed, 47 insertions(+), 19 deletions(-)
>
> diff --git a/drivers/platform/x86/dell/alienware-wmi.c b/drivers/platform/x86/dell/alienware-wmi.c
> index 87a7997579c9..512384635c4c 100644
> --- a/drivers/platform/x86/dell/alienware-wmi.c
> +++ b/drivers/platform/x86/dell/alienware-wmi.c
> @@ -403,6 +403,12 @@ struct wmax_u32_args {
>   	u8 arg3;
>   };
>
> +struct awcc_priv {
> +	struct wmi_device *wdev;
> +	struct platform_profile_handler pp_handler;
> +	enum wmax_thermal_mode supported_thermal_profiles[PLATFORM_PROFILE_LAST];
> +};
> +
>   struct alienfx_priv {
>   	struct platform_device *pdev;
>   	struct quirk_entry *quirks;
> @@ -416,9 +422,6 @@ struct alienfx_platdata {
>   	struct wmi_device *wdev;
>   };
>
> -static struct platform_profile_handler pp_handler;
> -static enum wmax_thermal_mode supported_thermal_profiles[PLATFORM_PROFILE_LAST];
> -
>   static u8 interface;
>
>   /*
> @@ -1051,6 +1054,8 @@ static int thermal_profile_get(struct platform_profile_handler *pprof,
>   static int thermal_profile_set(struct platform_profile_handler *pprof,
>   			       enum platform_profile_option profile)
>   {
> +	struct awcc_priv *priv = container_of(pprof, struct awcc_priv, pp_handler);
> +
>   	if (quirks->gmode) {
>   		u32 gmode_status;
>   		int ret;
> @@ -1071,11 +1076,12 @@ static int thermal_profile_set(struct platform_profile_handler *pprof,
>   		}
>   	}
>
> -	return wmax_thermal_control(supported_thermal_profiles[profile]);
> +	return wmax_thermal_control(priv->supported_thermal_profiles[profile]);
>   }
>
>   static int create_thermal_profile(struct wmi_device *wdev)
>   {
> +	struct awcc_priv *priv = dev_get_drvdata(&wdev->dev);
>   	enum platform_profile_option profile;
>   	enum wmax_thermal_mode mode;
>   	u8 sys_desc[4];
> @@ -1105,33 +1111,55 @@ static int create_thermal_profile(struct wmi_device *wdev)
>
>   		mode = out_data & WMAX_THERMAL_MODE_MASK;
>   		profile = wmax_mode_to_platform_profile[mode];
> -		supported_thermal_profiles[profile] = out_data;
> +		priv->supported_thermal_profiles[profile] = out_data;
>
> -		set_bit(profile, pp_handler.choices);
> +		set_bit(profile, priv->pp_handler.choices);
>   	}
>
> -	if (bitmap_empty(pp_handler.choices, PLATFORM_PROFILE_LAST))
> +	if (bitmap_empty(priv->pp_handler.choices, PLATFORM_PROFILE_LAST))
>   		return -ENODEV;
>
>   	if (quirks->gmode) {
> -		supported_thermal_profiles[PLATFORM_PROFILE_PERFORMANCE] =
> +		priv->supported_thermal_profiles[PLATFORM_PROFILE_PERFORMANCE] =
>   			WMAX_THERMAL_MODE_GMODE;
>
> -		set_bit(PLATFORM_PROFILE_PERFORMANCE, pp_handler.choices);
> +		set_bit(PLATFORM_PROFILE_PERFORMANCE, priv->pp_handler.choices);
>   	}
>
> -	pp_handler.profile_get = thermal_profile_get;
> -	pp_handler.profile_set = thermal_profile_set;
> -	pp_handler.name = "alienware-wmi";
> -	pp_handler.dev = &wdev->dev;
> +	priv->pp_handler.profile_get = thermal_profile_get;
> +	priv->pp_handler.profile_set = thermal_profile_set;
> +	priv->pp_handler.name = "alienware-wmi";
> +	priv->pp_handler.dev = &wdev->dev;
>
> -	return platform_profile_register(&pp_handler);
> +	return platform_profile_register(&priv->pp_handler);
>   }
>
> -static void remove_thermal_profile(void)
> +static int alienware_awcc_setup(struct wmi_device *wdev)
>   {
> -	if (quirks->thermal)
> -		platform_profile_remove(&pp_handler);
> +	struct awcc_priv *priv;
> +	int ret;
> +
> +	priv = devm_kzalloc(&wdev->dev, sizeof(*priv), GFP_KERNEL);
> +	if (!priv)
> +		return -ENOMEM;
> +
> +	dev_set_drvdata(&wdev->dev, priv);
> +	priv->wdev = wdev;
> +
> +	ret = create_thermal_profile(wdev);
> +	if (ret < 0)
> +		return ret;
> +
> +	return 0;

Please directly return the result of create_thermal_profile() here.

> +}
> +
> +static void alienware_awcc_exit(struct wmi_device *wdev)
> +{
> +	struct awcc_priv *priv;
> +
> +	priv = dev_get_drvdata(&wdev->dev);

Please assign priv directly.

With those minor issues being fixed:

Reviewed-by: Armin Wolf <W_Armin@....de>

> +
> +	platform_profile_remove(&priv->pp_handler);
>   }
>
>   /*
> @@ -1271,7 +1299,7 @@ static int wmax_wmi_probe(struct wmi_device *wdev, const void *context)
>   	int ret;
>
>   	if (quirks->thermal) {
> -		ret = create_thermal_profile(wdev);
> +		ret = alienware_awcc_setup(wdev);
>   	} else {
>   		ret = alienware_alienfx_setup(&pdata);
>   		if (ret < 0)
> @@ -1287,7 +1315,7 @@ static int wmax_wmi_probe(struct wmi_device *wdev, const void *context)
>   static void wmax_wmi_remove(struct wmi_device *wdev)
>   {
>   	if (quirks->thermal)
> -		remove_thermal_profile();
> +		alienware_awcc_exit(wdev);
>   	else
>   		alienware_alienfx_exit(wdev);
>   }