linux/drivers/hwmon/occ/common.c

// SPDX-License-Identifier: GPL-2.0+
// Copyright IBM Corp 2019

#include <linux/device.h>
#include <linux/export.h>
#include <linux/hwmon.h>
#include <linux/hwmon-sysfs.h>
#include <linux/jiffies.h>
#include <linux/kernel.h>
#include <linux/math64.h>
#include <linux/module.h>
#include <linux/mutex.h>
#include <linux/property.h>
#include <linux/sysfs.h>
#include <linux/unaligned.h>

#include "common.h"

#define EXTN_FLAG_SENSOR_ID …

#define OCC_ERROR_COUNT_THRESHOLD …

#define OCC_STATE_SAFE …
#define OCC_SAFE_TIMEOUT …

#define OCC_UPDATE_FREQUENCY …

#define OCC_TEMP_SENSOR_FAULT …

#define OCC_FRU_TYPE_VRM …

/* OCC sensor type and version definitions */

struct temp_sensor_1 { … } __packed;

struct temp_sensor_2 { … } __packed;

struct temp_sensor_10 { … } __packed;

struct freq_sensor_1 { … } __packed;

struct freq_sensor_2 { … } __packed;

struct power_sensor_1 { … } __packed;

struct power_sensor_2 { … } __packed;

struct power_sensor_data { … } __packed;

struct power_sensor_data_and_time { … } __packed;

struct power_sensor_a0 { … } __packed;

struct caps_sensor_2 { … } __packed;

struct caps_sensor_3 { … } __packed;

struct extended_sensor { … } __packed;

static int occ_poll(struct occ *occ)
{ … }

static int occ_set_user_power_cap(struct occ *occ, u16 user_power_cap)
{ … }

int occ_update_response(struct occ *occ)
{ … }

static ssize_t occ_show_temp_1(struct device *dev,
			       struct device_attribute *attr, char *buf)
{ … }

static ssize_t occ_show_temp_2(struct device *dev,
			       struct device_attribute *attr, char *buf)
{ … }

static ssize_t occ_show_temp_10(struct device *dev,
				struct device_attribute *attr, char *buf)
{ … }

static ssize_t occ_show_freq_1(struct device *dev,
			       struct device_attribute *attr, char *buf)
{ … }

static ssize_t occ_show_freq_2(struct device *dev,
			       struct device_attribute *attr, char *buf)
{ … }

static ssize_t occ_show_power_1(struct device *dev,
				struct device_attribute *attr, char *buf)
{ … }

static u64 occ_get_powr_avg(u64 *accum, u32 *samples)
{ … }

static ssize_t occ_show_power_2(struct device *dev,
				struct device_attribute *attr, char *buf)
{ … }

static ssize_t occ_show_power_a0(struct device *dev,
				 struct device_attribute *attr, char *buf)
{ … }

static ssize_t occ_show_caps_1_2(struct device *dev,
				 struct device_attribute *attr, char *buf)
{ … }

static ssize_t occ_show_caps_3(struct device *dev,
			       struct device_attribute *attr, char *buf)
{ … }

static ssize_t occ_store_caps_user(struct device *dev,
				   struct device_attribute *attr,
				   const char *buf, size_t count)
{ … }

static ssize_t occ_show_extended(struct device *dev,
				 struct device_attribute *attr, char *buf)
{ … }

/*
 * Some helper macros to make it easier to define an occ_attribute. Since these
 * are dynamically allocated, we shouldn't use the existing kernel macros which
 * stringify the name argument.
 */
#define ATTR_OCC(_name, _mode, _show, _store) …

#define SENSOR_ATTR_OCC(_name, _mode, _show, _store, _nr, _index) …

#define OCC_INIT_ATTR(_name, _mode, _show, _store, _nr, _index) …

/*
 * Allocate and instatiate sensor_device_attribute_2s. It's most efficient to
 * use our own instead of the built-in hwmon attribute types.
 */
static int occ_setup_sensor_attrs(struct occ *occ)
{ … }

/* only need to do this once at startup, as OCC won't change sensors on us */
static void occ_parse_poll_response(struct occ *occ)
{ … }

int occ_active(struct occ *occ, bool active)
{ … }

int occ_setup(struct occ *occ)
{ … }
EXPORT_SYMBOL_GPL(…);

void occ_shutdown(struct occ *occ)
{ … }
EXPORT_SYMBOL_GPL(…);

MODULE_AUTHOR(…) …;
MODULE_DESCRIPTION(…) …;
MODULE_LICENSE(…) …;