drivers: thermal: make usage of CONFIG_THERMAL_HWMON optional
When registering a new thermal_device, the thermal framework will always add a hwmon sysfs interface. This patch adds a flag to make this behavior optional. Now when registering a new thermal device, the caller can optionally inform if hwmon interface is desirable. This can be done by means of passing a thermal_zone_params.no_hwmon == true. In order to keep same behavior as of today, all current calls will by default create the hwmon interface. Cc: David Woodhouse <dwmw2@infradead.org> Cc: linux-acpi@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org Cc: linux-kernel@vger.kernel.org Cc: linux-pm@vger.kernel.org Cc: Zhang Rui <rui.zhang@intel.com> Suggested-by: Wei Ni <wni@nvidia.com> Signed-off-by: Eduardo Valentin <eduardo.valentin@ti.com>
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@ -142,6 +142,11 @@ temperature) and throttle appropriate devices.
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This is an optional feature where some platforms can choose not to
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provide this data.
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.governor_name: Name of the thermal governor used for this zone
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.no_hwmon: a boolean to indicate if the thermal to hwmon sysfs interface
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is required. when no_hwmon == false, a hwmon sysfs interface
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will be created. when no_hwmon == true, nothing will be done.
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In case the thermal_zone_params is NULL, the hwmon interface
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will be created (for backward compatibility).
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.num_tbps: Number of thermal_bind_params entries for this zone
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.tbp: thermal_bind_params entries
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@ -1462,9 +1462,11 @@ struct thermal_zone_device *thermal_zone_device_register(const char *type,
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mutex_unlock(&thermal_governor_lock);
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if (!tz->tzp || !tz->tzp->no_hwmon) {
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result = thermal_add_hwmon_sysfs(tz);
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if (result)
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goto unregister;
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}
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mutex_lock(&thermal_list_lock);
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list_add_tail(&tz->node, &thermal_tz_list);
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@ -214,6 +214,14 @@ struct thermal_bind_params {
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/* Structure to define Thermal Zone parameters */
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struct thermal_zone_params {
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char governor_name[THERMAL_NAME_LENGTH];
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/*
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* a boolean to indicate if the thermal to hwmon sysfs interface
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* is required. when no_hwmon == false, a hwmon sysfs interface
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* will be created. when no_hwmon == true, nothing will be done
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*/
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bool no_hwmon;
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int num_tbps; /* Number of tbp entries */
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struct thermal_bind_params *tbp;
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};
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