#ifndef _HWMON_H_
#define _HWMON_H_
+#include <linux/bitops.h>
+
struct device;
struct attribute_group;
+enum hwmon_sensor_types {
+ hwmon_chip,
+ hwmon_temp,
+ hwmon_in,
+ hwmon_curr,
+ hwmon_power,
+ hwmon_energy,
+};
+
+enum hwmon_chip_attributes {
+ hwmon_chip_temp_reset_history,
+ hwmon_chip_register_tz,
+ hwmon_chip_update_interval,
+ hwmon_chip_alarms,
+};
+
+#define HWMON_C_TEMP_RESET_HISTORY BIT(hwmon_chip_temp_reset_history)
+#define HWMON_C_IN_RESET_HISTORY BIT(hwmon_chip_in_reset_history)
+#define HWMON_C_REGISTER_TZ BIT(hwmon_chip_register_tz)
+#define HWMON_C_UPDATE_INTERVAL BIT(hwmon_chip_update_interval)
+#define HWMON_C_ALARMS BIT(hwmon_chip_alarms)
+
+enum hwmon_temp_attributes {
+ hwmon_temp_input = 0,
+ hwmon_temp_type,
+ hwmon_temp_lcrit,
+ hwmon_temp_lcrit_hyst,
+ hwmon_temp_min,
+ hwmon_temp_min_hyst,
+ hwmon_temp_max,
+ hwmon_temp_max_hyst,
+ hwmon_temp_crit,
+ hwmon_temp_crit_hyst,
+ hwmon_temp_emergency,
+ hwmon_temp_emergency_hyst,
+ hwmon_temp_alarm,
+ hwmon_temp_lcrit_alarm,
+ hwmon_temp_min_alarm,
+ hwmon_temp_max_alarm,
+ hwmon_temp_crit_alarm,
+ hwmon_temp_emergency_alarm,
+ hwmon_temp_fault,
+ hwmon_temp_offset,
+ hwmon_temp_label,
+ hwmon_temp_lowest,
+ hwmon_temp_highest,
+ hwmon_temp_reset_history,
+};
+
+#define HWMON_T_INPUT BIT(hwmon_temp_input)
+#define HWMON_T_TYPE BIT(hwmon_temp_type)
+#define HWMON_T_LCRIT BIT(hwmon_temp_lcrit)
+#define HWMON_T_LCRIT_HYST BIT(hwmon_temp_lcrit_hyst)
+#define HWMON_T_MIN BIT(hwmon_temp_min)
+#define HWMON_T_MIN_HYST BIT(hwmon_temp_min_hyst)
+#define HWMON_T_MAX BIT(hwmon_temp_max)
+#define HWMON_T_MAX_HYST BIT(hwmon_temp_max_hyst)
+#define HWMON_T_CRIT BIT(hwmon_temp_crit)
+#define HWMON_T_CRIT_HYST BIT(hwmon_temp_crit_hyst)
+#define HWMON_T_EMERGENCY BIT(hwmon_temp_emergency)
+#define HWMON_T_EMERGENCY_HYST BIT(hwmon_temp_emergency_hyst)
+#define HWMON_T_MIN_ALARM BIT(hwmon_temp_min_alarm)
+#define HWMON_T_MAX_ALARM BIT(hwmon_temp_max_alarm)
+#define HWMON_T_CRIT_ALARM BIT(hwmon_temp_crit_alarm)
+#define HWMON_T_EMERGENCY_ALARM BIT(hwmon_temp_emergency_alarm)
+#define HWMON_T_FAULT BIT(hwmon_temp_fault)
+#define HWMON_T_OFFSET BIT(hwmon_temp_offset)
+#define HWMON_T_LABEL BIT(hwmon_temp_label)
+#define HWMON_T_LOWEST BIT(hwmon_temp_lowest)
+#define HWMON_T_HIGHEST BIT(hwmon_temp_highest)
+#define HWMON_T_RESET_HISTORY BIT(hwmon_temp_reset_history)
+
+/**
+ * struct hwmon_ops - hwmon device operations
+ * @is_visible: Callback to return attribute visibility. Mandatory.
+ * Parameters are:
+ * @const void *drvdata:
+ * Pointer to driver-private data structure passed
+ * as argument to hwmon_device_register_with_info().
+ * @type: Sensor type
+ * @attr: Sensor attribute
+ * @channel:
+ * Channel number
+ * The function returns the file permissions.
+ * If the return value is 0, no attribute will be created.
+ * @read: Read callback. Optional. If not provided, attributes
+ * will not be readable.
+ * Parameters are:
+ * @dev: Pointer to hardware monitoring device
+ * @type: Sensor type
+ * @attr: Sensor attribute
+ * @channel:
+ * Channel number
+ * @val: Pointer to returned value
+ * The function returns 0 on success or a negative error number.
+ * @write: Write callback. Optional. If not provided, attributes
+ * will not be writable.
+ * Parameters are:
+ * @dev: Pointer to hardware monitoring device
+ * @type: Sensor type
+ * @attr: Sensor attribute
+ * @channel:
+ * Channel number
+ * @val: Value to write
+ * The function returns 0 on success or a negative error number.
+ */
+struct hwmon_ops {
+ umode_t (*is_visible)(const void *drvdata, enum hwmon_sensor_types type,
+ u32 attr, int channel);
+ int (*read)(struct device *dev, enum hwmon_sensor_types type,
+ u32 attr, int channel, long *val);
+ int (*write)(struct device *dev, enum hwmon_sensor_types type,
+ u32 attr, int channel, long val);
+};
+
+/**
+ * Channel information
+ * @type: Channel type.
+ * @config: Pointer to NULL-terminated list of channel parameters.
+ * Use for per-channel attributes.
+ */
+struct hwmon_channel_info {
+ enum hwmon_sensor_types type;
+ const u32 *config;
+};
+
+/**
+ * Chip configuration
+ * @ops: Pointer to hwmon operations.
+ * @info: Null-terminated list of channel information.
+ */
+struct hwmon_chip_info {
+ const struct hwmon_ops *ops;
+ const struct hwmon_channel_info **info;
+};
+
struct device *hwmon_device_register(struct device *dev);
struct device *
hwmon_device_register_with_groups(struct device *dev, const char *name,
devm_hwmon_device_register_with_groups(struct device *dev, const char *name,
void *drvdata,
const struct attribute_group **groups);
+struct device *
+hwmon_device_register_with_info(struct device *dev,
+ const char *name, void *drvdata,
+ const struct hwmon_chip_info *info,
+ const struct attribute_group **groups);
+struct device *
+devm_hwmon_device_register_with_info(struct device *dev,
+ const char *name, void *drvdata,
+ const struct hwmon_chip_info *info,
+ const struct attribute_group **groups);
void hwmon_device_unregister(struct device *dev);
void devm_hwmon_device_unregister(struct device *dev);
projects / cascardo / linux.git / blobdiff