Re: [PATCH v3 1/6] platform/x86: lenovo-wmi-other: Add LWMI_ATTR_ID Macro

[Ilpo Järvinen]

On Tue, 24 Feb 2026, Derek J. Clark wrote:

> Adds LWMI_ATTR_ID macro. In the same vein as LWMI_ATTR_ID_FAN_RPM,
> but as a generic, to de-duplicate attribute_id assignment biolerplate.
> 
> Reviewed-by: Mark Pearson <mpearson-lenovo@xxxxxxxxx>
> Signed-off-by: Derek J. Clark <derekjohn.clark@xxxxxxxxx>
> ---
>  drivers/platform/x86/lenovo/wmi-capdata.h  |  6 ++++
>  drivers/platform/x86/lenovo/wmi-gamezone.h |  1 +
>  drivers/platform/x86/lenovo/wmi-other.c    | 36 ++++++----------------
>  3 files changed, 17 insertions(+), 26 deletions(-)
> 
> diff --git a/drivers/platform/x86/lenovo/wmi-capdata.h b/drivers/platform/x86/lenovo/wmi-capdata.h
> index 8c1df3efcc55..27202e2dc8a5 100644
> --- a/drivers/platform/x86/lenovo/wmi-capdata.h
> +++ b/drivers/platform/x86/lenovo/wmi-capdata.h
> @@ -17,6 +17,12 @@
>  #define LWMI_ATTR_MODE_ID_MASK	GENMASK(15, 8)
>  #define LWMI_ATTR_TYPE_ID_MASK	GENMASK(7, 0)
>  
> +#define LWMI_ATTR_ID(dev, feat, mode, type) \
> +	(FIELD_PREP(LWMI_ATTR_DEV_ID_MASK, dev) | \
> +	 FIELD_PREP(LWMI_ATTR_FEAT_ID_MASK, feat) | \
> +	 FIELD_PREP(LWMI_ATTR_MODE_ID_MASK, mode) | \
> +	 FIELD_PREP(LWMI_ATTR_TYPE_ID_MASK, type))

Why does this need to be macro? Static inline would have proper types.

> +
>  #define LWMI_DEVICE_ID_FAN	0x04
>  
>  struct component_match;
> diff --git a/drivers/platform/x86/lenovo/wmi-gamezone.h b/drivers/platform/x86/lenovo/wmi-gamezone.h
> index 6b163a5eeb95..ddb919cf6c36 100644
> --- a/drivers/platform/x86/lenovo/wmi-gamezone.h
> +++ b/drivers/platform/x86/lenovo/wmi-gamezone.h
> @@ -10,6 +10,7 @@ enum gamezone_events_type {
>  };
>  
>  enum thermal_mode {
> +	LWMI_GZ_THERMAL_MODE_NONE =	   0x00,
>  	LWMI_GZ_THERMAL_MODE_QUIET =	   0x01,
>  	LWMI_GZ_THERMAL_MODE_BALANCED =	   0x02,
>  	LWMI_GZ_THERMAL_MODE_PERFORMANCE = 0x03,
> diff --git a/drivers/platform/x86/lenovo/wmi-other.c b/drivers/platform/x86/lenovo/wmi-other.c
> index 6040f45aa2b0..95886df39c8d 100644
> --- a/drivers/platform/x86/lenovo/wmi-other.c
> +++ b/drivers/platform/x86/lenovo/wmi-other.c
> @@ -71,10 +71,9 @@
>  #define LWMI_FAN_NR 4
>  #define LWMI_FAN_ID(x) ((x) + LWMI_FAN_ID_BASE)
>  
> -#define LWMI_ATTR_ID_FAN_RPM(x)						\
> -	(FIELD_PREP(LWMI_ATTR_DEV_ID_MASK, LWMI_DEVICE_ID_FAN) |	\
> -	 FIELD_PREP(LWMI_ATTR_FEAT_ID_MASK, LWMI_FEATURE_ID_FAN_RPM) |	\
> -	 FIELD_PREP(LWMI_ATTR_TYPE_ID_MASK, LWMI_FAN_ID(x)))
> +#define LWMI_ATTR_ID_FAN_RPM(x)                                   \
> +	LWMI_ATTR_ID(LWMI_DEVICE_ID_FAN, LWMI_FEATURE_ID_FAN_RPM, \
> +		     LWMI_GZ_THERMAL_MODE_NONE, LWMI_FAN_ID(x))
>  
>  #define LWMI_FAN_DIV 100
>  
> @@ -716,12 +715,8 @@ static ssize_t attr_capdata01_show(struct kobject *kobj,
>  	u32 attribute_id;
>  	int value, ret;
>  
> -	attribute_id =
> -		FIELD_PREP(LWMI_ATTR_DEV_ID_MASK, tunable_attr->device_id) |
> -		FIELD_PREP(LWMI_ATTR_FEAT_ID_MASK, tunable_attr->feature_id) |
> -		FIELD_PREP(LWMI_ATTR_MODE_ID_MASK,
> -			   LWMI_GZ_THERMAL_MODE_CUSTOM) |
> -		FIELD_PREP(LWMI_ATTR_TYPE_ID_MASK, tunable_attr->type_id);
> +	attribute_id = LWMI_ATTR_ID(tunable_attr->device_id, tunable_attr->feature_id,
> +				    LWMI_GZ_THERMAL_MODE_CUSTOM, tunable_attr->type_id);
>  
>  	ret = lwmi_cd01_get_data(priv->cd01_list, attribute_id, &capdata);
>  	if (ret)
> @@ -776,7 +771,6 @@ static ssize_t attr_current_value_store(struct kobject *kobj,
>  	struct wmi_method_args_32 args;
>  	struct capdata01 capdata;
>  	enum thermal_mode mode;
> -	u32 attribute_id;
>  	u32 value;
>  	int ret;
>  
> @@ -787,13 +781,10 @@ static ssize_t attr_current_value_store(struct kobject *kobj,
>  	if (mode != LWMI_GZ_THERMAL_MODE_CUSTOM)
>  		return -EBUSY;
>  
> -	attribute_id =
> -		FIELD_PREP(LWMI_ATTR_DEV_ID_MASK, tunable_attr->device_id) |
> -		FIELD_PREP(LWMI_ATTR_FEAT_ID_MASK, tunable_attr->feature_id) |
> -		FIELD_PREP(LWMI_ATTR_MODE_ID_MASK, mode) |
> -		FIELD_PREP(LWMI_ATTR_TYPE_ID_MASK, tunable_attr->type_id);
> +	args.arg0 = LWMI_ATTR_ID(tunable_attr->device_id, tunable_attr->feature_id,
> +				 mode, tunable_attr->type_id);
>  
> -	ret = lwmi_cd01_get_data(priv->cd01_list, attribute_id, &capdata);
> +	ret = lwmi_cd01_get_data(priv->cd01_list, args.arg0, &capdata);
>  	if (ret)
>  		return ret;
>  
> @@ -804,7 +795,6 @@ static ssize_t attr_current_value_store(struct kobject *kobj,
>  	if (value < capdata.min_value || value > capdata.max_value)
>  		return -EINVAL;
>  
> -	args.arg0 = attribute_id;
>  	args.arg1 = value;
>  
>  	ret = lwmi_dev_evaluate_int(priv->wdev, 0x0, LWMI_FEATURE_VALUE_SET,
> @@ -838,7 +828,6 @@ static ssize_t attr_current_value_show(struct kobject *kobj,
>  	struct lwmi_om_priv *priv = dev_get_drvdata(tunable_attr->dev);
>  	struct wmi_method_args_32 args;
>  	enum thermal_mode mode;
> -	u32 attribute_id;
>  	int retval;
>  	int ret;
>  
> @@ -846,13 +835,8 @@ static ssize_t attr_current_value_show(struct kobject *kobj,
>  	if (ret)
>  		return ret;
>  
> -	attribute_id =
> -		FIELD_PREP(LWMI_ATTR_DEV_ID_MASK, tunable_attr->device_id) |
> -		FIELD_PREP(LWMI_ATTR_FEAT_ID_MASK, tunable_attr->feature_id) |
> -		FIELD_PREP(LWMI_ATTR_MODE_ID_MASK, mode) |
> -		FIELD_PREP(LWMI_ATTR_TYPE_ID_MASK, tunable_attr->type_id);
> -
> -	args.arg0 = attribute_id;
> +	args.arg0 = LWMI_ATTR_ID(tunable_attr->device_id, tunable_attr->feature_id,
> +				 mode, tunable_attr->type_id);
>  
>  	ret = lwmi_dev_evaluate_int(priv->wdev, 0x0, LWMI_FEATURE_VALUE_GET,
>  				    (unsigned char *)&args, sizeof(args),
> 

-- 
 i.