Commit a3920a6e authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux

Pull ACPI & Thermal updates from Len Brown:
 "The generic Linux thermal layer is gaining some new capabilities
  (generic cooling via cpufreq) and some new customers (ARM).

  Also, an ACPI EC bug fix plus a regression fix."

* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux: (30 commits)
  tools/power/acpi/acpidump: remove duplicated include from acpidump.c
  ACPI idle, CPU hotplug: Fix NULL pointer dereference during hotplug
  cpuidle / ACPI: fix potential NULL pointer dereference
  ACPI: EC: Add a quirk for CLEVO M720T/M730T laptop
  ACPI: EC: Make the GPE storm threshold a module parameter
  thermal: Exynos: Fix NULL pointer dereference in exynos_unregister_thermal()
  Thermal: Fix bug on cpu_cooling, cooling device's id conflict problem.
  thermal: exynos: Use devm_* functions
  ARM: exynos: add thermal sensor driver platform data support
  thermal: exynos: register the tmu sensor with the kernel thermal layer
  thermal: exynos5: add exynos5250 thermal sensor driver support
  hwmon: exynos4: move thermal sensor driver to driver/thermal directory
  thermal: add generic cpufreq cooling implementation
  Fix a build error.
  thermal: Fix potential NULL pointer accesses
  thermal: add Renesas R-Car thermal sensor support
  thermal: fix potential out-of-bounds memory access
  Thermal: Introduce locking for cdev.thermal_instances list.
  Thermal: Unify the code for both active and passive cooling
  Thermal: Introduce simple arbitrator for setting device cooling state
  ...
parents 18a022de d1d4a81b
CPU cooling APIs How To
===================================
Written by Amit Daniel Kachhap <amit.kachhap@linaro.org>
Updated: 12 May 2012
Copyright (c) 2012 Samsung Electronics Co., Ltd(http://www.samsung.com)
0. Introduction
The generic cpu cooling(freq clipping) provides registration/unregistration APIs
to the caller. The binding of the cooling devices to the trip point is left for
the user. The registration APIs returns the cooling device pointer.
1. cpu cooling APIs
1.1 cpufreq registration/unregistration APIs
1.1.1 struct thermal_cooling_device *cpufreq_cooling_register(
struct cpumask *clip_cpus)
This interface function registers the cpufreq cooling device with the name
"thermal-cpufreq-%x". This api can support multiple instances of cpufreq
cooling devices.
clip_cpus: cpumask of cpus where the frequency constraints will happen.
1.1.2 void cpufreq_cooling_unregister(struct thermal_cooling_device *cdev)
This interface function unregisters the "thermal-cpufreq-%x" cooling device.
cdev: Cooling device pointer which has to be unregistered.
......@@ -46,36 +46,7 @@ The threshold levels are defined as follows:
The threshold and each trigger_level are set
through the corresponding registers.
When an interrupt occurs, this driver notify user space of
one of four threshold levels for the interrupt
through kobject_uevent_env and sysfs_notify functions.
When an interrupt occurs, this driver notify kernel thermal framework
with the function exynos4_report_trigger.
Although an interrupt condition for level_0 can be set,
it is not notified to user space through sysfs_notify function.
Sysfs Interface
---------------
name name of the temperature sensor
RO
temp1_input temperature
RO
temp1_max temperature for level_1 interrupt
RO
temp1_crit temperature for level_2 interrupt
RO
temp1_emergency temperature for level_3 interrupt
RO
temp1_max_alarm alarm for level_1 interrupt
RO
temp1_crit_alarm
alarm for level_2 interrupt
RO
temp1_emergency_alarm
alarm for level_3 interrupt
RO
it can be used to synchronize the cooling action.
......@@ -84,7 +84,8 @@ temperature) and throttle appropriate devices.
1.3 interface for binding a thermal zone device with a thermal cooling device
1.3.1 int thermal_zone_bind_cooling_device(struct thermal_zone_device *tz,
int trip, struct thermal_cooling_device *cdev);
int trip, struct thermal_cooling_device *cdev,
unsigned long upper, unsigned long lower);
This interface function bind a thermal cooling device to the certain trip
point of a thermal zone device.
......@@ -93,6 +94,12 @@ temperature) and throttle appropriate devices.
cdev: thermal cooling device
trip: indicates which trip point the cooling devices is associated with
in this thermal zone.
upper:the Maximum cooling state for this trip point.
THERMAL_NO_LIMIT means no upper limit,
and the cooling device can be in max_state.
lower:the Minimum cooling state can be used for this trip point.
THERMAL_NO_LIMIT means no lower limit,
and the cooling device can be in cooling state 0.
1.3.2 int thermal_zone_unbind_cooling_device(struct thermal_zone_device *tz,
int trip, struct thermal_cooling_device *cdev);
......
......@@ -71,9 +71,6 @@ enum ec_command {
#define ACPI_EC_UDELAY_GLK 1000 /* Wait 1ms max. to get global lock */
#define ACPI_EC_MSI_UDELAY 550 /* Wait 550us for MSI EC */
#define ACPI_EC_STORM_THRESHOLD 8 /* number of false interrupts
per one transaction */
enum {
EC_FLAGS_QUERY_PENDING, /* Query is pending */
EC_FLAGS_GPE_STORM, /* GPE storm detected */
......@@ -87,6 +84,15 @@ static unsigned int ec_delay __read_mostly = ACPI_EC_DELAY;
module_param(ec_delay, uint, 0644);
MODULE_PARM_DESC(ec_delay, "Timeout(ms) waited until an EC command completes");
/*
* If the number of false interrupts per one transaction exceeds
* this threshold, will think there is a GPE storm happened and
* will disable the GPE for normal transaction.
*/
static unsigned int ec_storm_threshold __read_mostly = 8;
module_param(ec_storm_threshold, uint, 0644);
MODULE_PARM_DESC(ec_storm_threshold, "Maxim false GPE numbers not considered as GPE storm");
/* If we find an EC via the ECDT, we need to keep a ptr to its context */
/* External interfaces use first EC only, so remember */
typedef int (*acpi_ec_query_func) (void *data);
......@@ -319,7 +325,7 @@ static int acpi_ec_transaction(struct acpi_ec *ec, struct transaction *t)
msleep(1);
/* It is safe to enable the GPE outside of the transaction. */
acpi_enable_gpe(NULL, ec->gpe);
} else if (t->irq_count > ACPI_EC_STORM_THRESHOLD) {
} else if (t->irq_count > ec_storm_threshold) {
pr_info(PREFIX "GPE storm detected, "
"transactions will use polling mode\n");
set_bit(EC_FLAGS_GPE_STORM, &ec->flags);
......@@ -924,6 +930,17 @@ static int ec_flag_msi(const struct dmi_system_id *id)
return 0;
}
/*
* Clevo M720 notebook actually works ok with IRQ mode, if we lifted
* the GPE storm threshold back to 20
*/
static int ec_enlarge_storm_threshold(const struct dmi_system_id *id)
{
pr_debug("Setting the EC GPE storm threshold to 20\n");
ec_storm_threshold = 20;
return 0;
}
static struct dmi_system_id __initdata ec_dmi_table[] = {
{
ec_skip_dsdt_scan, "Compal JFL92", {
......@@ -955,10 +972,13 @@ static struct dmi_system_id __initdata ec_dmi_table[] = {
{
ec_validate_ecdt, "ASUS hardware", {
DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer Inc.") }, NULL},
{
ec_enlarge_storm_threshold, "CLEVO hardware", {
DMI_MATCH(DMI_SYS_VENDOR, "CLEVO Co."),
DMI_MATCH(DMI_PRODUCT_NAME, "M720T/M730T"),}, NULL},
{},
};
int __init acpi_ec_ecdt_probe(void)
{
acpi_status status;
......
......@@ -1132,7 +1132,7 @@ static int acpi_processor_setup_cpuidle_states(struct acpi_processor *pr)
int acpi_processor_hotplug(struct acpi_processor *pr)
{
int ret = 0;
struct cpuidle_device *dev = per_cpu(acpi_cpuidle_device, pr->id);
struct cpuidle_device *dev;
if (disabled_by_idle_boot_param())
return 0;
......@@ -1147,6 +1147,7 @@ int acpi_processor_hotplug(struct acpi_processor *pr)
if (!pr->flags.power_setup_done)
return -ENODEV;
dev = per_cpu(acpi_cpuidle_device, pr->id);
cpuidle_pause_and_lock();
cpuidle_disable_device(dev);
acpi_processor_get_power_info(pr);
......
......@@ -708,6 +708,40 @@ static int thermal_get_crit_temp(struct thermal_zone_device *thermal,
return -EINVAL;
}
static int thermal_get_trend(struct thermal_zone_device *thermal,
int trip, enum thermal_trend *trend)
{
struct acpi_thermal *tz = thermal->devdata;
enum thermal_trip_type type;
int i;
if (thermal_get_trip_type(thermal, trip, &type))
return -EINVAL;
if (type == THERMAL_TRIP_ACTIVE) {
/* aggressive active cooling */
*trend = THERMAL_TREND_RAISING;
return 0;
}
/*
* tz->temperature has already been updated by generic thermal layer,
* before this callback being invoked
*/
i = (tz->trips.passive.tc1 * (tz->temperature - tz->last_temperature))
+ (tz->trips.passive.tc2
* (tz->temperature - tz->trips.passive.temperature));
if (i > 0)
*trend = THERMAL_TREND_RAISING;
else if (i < 0)
*trend = THERMAL_TREND_DROPPING;
else
*trend = THERMAL_TREND_STABLE;
return 0;
}
static int thermal_notify(struct thermal_zone_device *thermal, int trip,
enum thermal_trip_type trip_type)
{
......@@ -731,11 +765,9 @@ static int thermal_notify(struct thermal_zone_device *thermal, int trip,
return 0;
}
typedef int (*cb)(struct thermal_zone_device *, int,
struct thermal_cooling_device *);
static int acpi_thermal_cooling_device_cb(struct thermal_zone_device *thermal,
struct thermal_cooling_device *cdev,
cb action)
bool bind)
{
struct acpi_device *device = cdev->devdata;
struct acpi_thermal *tz = thermal->devdata;
......@@ -759,11 +791,19 @@ static int acpi_thermal_cooling_device_cb(struct thermal_zone_device *thermal,
i++) {
handle = tz->trips.passive.devices.handles[i];
status = acpi_bus_get_device(handle, &dev);
if (ACPI_SUCCESS(status) && (dev == device)) {
result = action(thermal, trip, cdev);
if (result)
goto failed;
}
if (ACPI_FAILURE(status) || dev != device)
continue;
if (bind)
result =
thermal_zone_bind_cooling_device
(thermal, trip, cdev,
THERMAL_NO_LIMIT, THERMAL_NO_LIMIT);
else
result =
thermal_zone_unbind_cooling_device
(thermal, trip, cdev);
if (result)
goto failed;
}
}
......@@ -776,11 +816,17 @@ static int acpi_thermal_cooling_device_cb(struct thermal_zone_device *thermal,
j++) {
handle = tz->trips.active[i].devices.handles[j];
status = acpi_bus_get_device(handle, &dev);
if (ACPI_SUCCESS(status) && (dev == device)) {
result = action(thermal, trip, cdev);
if (result)
goto failed;
}
if (ACPI_FAILURE(status) || dev != device)
continue;
if (bind)
result = thermal_zone_bind_cooling_device
(thermal, trip, cdev,
THERMAL_NO_LIMIT, THERMAL_NO_LIMIT);
else
result = thermal_zone_unbind_cooling_device
(thermal, trip, cdev);
if (result)
goto failed;
}
}
......@@ -788,7 +834,14 @@ static int acpi_thermal_cooling_device_cb(struct thermal_zone_device *thermal,
handle = tz->devices.handles[i];
status = acpi_bus_get_device(handle, &dev);
if (ACPI_SUCCESS(status) && (dev == device)) {
result = action(thermal, -1, cdev);
if (bind)
result = thermal_zone_bind_cooling_device
(thermal, -1, cdev,
THERMAL_NO_LIMIT,
THERMAL_NO_LIMIT);
else
result = thermal_zone_unbind_cooling_device
(thermal, -1, cdev);
if (result)
goto failed;
}
......@@ -802,16 +855,14 @@ static int
acpi_thermal_bind_cooling_device(struct thermal_zone_device *thermal,
struct thermal_cooling_device *cdev)
{
return acpi_thermal_cooling_device_cb(thermal, cdev,
thermal_zone_bind_cooling_device);
return acpi_thermal_cooling_device_cb(thermal, cdev, true);
}
static int
acpi_thermal_unbind_cooling_device(struct thermal_zone_device *thermal,
struct thermal_cooling_device *cdev)
{
return acpi_thermal_cooling_device_cb(thermal, cdev,
thermal_zone_unbind_cooling_device);
return acpi_thermal_cooling_device_cb(thermal, cdev, false);
}
static const struct thermal_zone_device_ops acpi_thermal_zone_ops = {
......@@ -823,6 +874,7 @@ static const struct thermal_zone_device_ops acpi_thermal_zone_ops = {
.get_trip_type = thermal_get_trip_type,
.get_trip_temp = thermal_get_trip_temp,
.get_crit_temp = thermal_get_crit_temp,
.get_trend = thermal_get_trend,
.notify = thermal_notify,
};
......@@ -849,15 +901,12 @@ static int acpi_thermal_register_thermal_zone(struct acpi_thermal *tz)
tz->thermal_zone =
thermal_zone_device_register("acpitz", trips, 0, tz,
&acpi_thermal_zone_ops,
tz->trips.passive.tc1,
tz->trips.passive.tc2,
tz->trips.passive.tsp*100,
tz->polling_frequency*100);
else
tz->thermal_zone =
thermal_zone_device_register("acpitz", trips, 0, tz,
&acpi_thermal_zone_ops,
0, 0, 0,
&acpi_thermal_zone_ops, 0,
tz->polling_frequency*100);
if (IS_ERR(tz->thermal_zone))
return -ENODEV;
......
......@@ -368,7 +368,7 @@ EXPORT_SYMBOL_GPL(cpuidle_enable_device);
*/
void cpuidle_disable_device(struct cpuidle_device *dev)
{
if (!dev->enabled)
if (!dev || !dev->enabled)
return;
if (!cpuidle_get_driver() || !cpuidle_curr_governor)
return;
......
......@@ -334,16 +334,6 @@ config SENSORS_DA9052_ADC
This driver can also be built as module. If so, the module
will be called da9052-hwmon.
config SENSORS_EXYNOS4_TMU
tristate "Temperature sensor on Samsung EXYNOS4"
depends on ARCH_EXYNOS4
help
If you say yes here you get support for TMU (Thermal Management
Unit) on SAMSUNG EXYNOS4 series of SoC.
This driver can also be built as a module. If so, the module
will be called exynos4-tmu.
config SENSORS_I5K_AMB
tristate "FB-DIMM AMB temperature sensor on Intel 5000 series chipsets"
depends on PCI
......
......@@ -50,7 +50,6 @@ obj-$(CONFIG_SENSORS_DS1621) += ds1621.o
obj-$(CONFIG_SENSORS_EMC1403) += emc1403.o
obj-$(CONFIG_SENSORS_EMC2103) += emc2103.o
obj-$(CONFIG_SENSORS_EMC6W201) += emc6w201.o
obj-$(CONFIG_SENSORS_EXYNOS4_TMU) += exynos4_tmu.o
obj-$(CONFIG_SENSORS_F71805F) += f71805f.o
obj-$(CONFIG_SENSORS_F71882FG) += f71882fg.o
obj-$(CONFIG_SENSORS_F75375S) += f75375s.o
......
/*
* exynos4_tmu.c - Samsung EXYNOS4 TMU (Thermal Management Unit)
*
* Copyright (C) 2011 Samsung Electronics
* Donggeun Kim <dg77.kim@samsung.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#include <linux/module.h>
#include <linux/err.h>
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/platform_device.h>
#include <linux/interrupt.h>
#include <linux/clk.h>
#include <linux/workqueue.h>
#include <linux/sysfs.h>
#include <linux/kobject.h>
#include <linux/io.h>
#include <linux/mutex.h>
#include <linux/hwmon.h>
#include <linux/hwmon-sysfs.h>
#include <linux/platform_data/exynos4_tmu.h>
#define EXYNOS4_TMU_REG_TRIMINFO 0x0
#define EXYNOS4_TMU_REG_CONTROL 0x20
#define EXYNOS4_TMU_REG_STATUS 0x28
#define EXYNOS4_TMU_REG_CURRENT_TEMP 0x40
#define EXYNOS4_TMU_REG_THRESHOLD_TEMP 0x44
#define EXYNOS4_TMU_REG_TRIG_LEVEL0 0x50
#define EXYNOS4_TMU_REG_TRIG_LEVEL1 0x54
#define EXYNOS4_TMU_REG_TRIG_LEVEL2 0x58
#define EXYNOS4_TMU_REG_TRIG_LEVEL3 0x5C
#define EXYNOS4_TMU_REG_PAST_TEMP0 0x60
#define EXYNOS4_TMU_REG_PAST_TEMP1 0x64
#define EXYNOS4_TMU_REG_PAST_TEMP2 0x68
#define EXYNOS4_TMU_REG_PAST_TEMP3 0x6C
#define EXYNOS4_TMU_REG_INTEN 0x70
#define EXYNOS4_TMU_REG_INTSTAT 0x74
#define EXYNOS4_TMU_REG_INTCLEAR 0x78
#define EXYNOS4_TMU_GAIN_SHIFT 8
#define EXYNOS4_TMU_REF_VOLTAGE_SHIFT 24
#define EXYNOS4_TMU_TRIM_TEMP_MASK 0xff
#define EXYNOS4_TMU_CORE_ON 3
#define EXYNOS4_TMU_CORE_OFF 2
#define EXYNOS4_TMU_DEF_CODE_TO_TEMP_OFFSET 50
#define EXYNOS4_TMU_TRIG_LEVEL0_MASK 0x1
#define EXYNOS4_TMU_TRIG_LEVEL1_MASK 0x10
#define EXYNOS4_TMU_TRIG_LEVEL2_MASK 0x100
#define EXYNOS4_TMU_TRIG_LEVEL3_MASK 0x1000
#define EXYNOS4_TMU_INTCLEAR_VAL 0x1111
struct exynos4_tmu_data {
struct exynos4_tmu_platform_data *pdata;
struct device *hwmon_dev;
struct resource *mem;
void __iomem *base;
int irq;
struct work_struct irq_work;
struct mutex lock;
struct clk *clk;
u8 temp_error1, temp_error2;
};
/*
* TMU treats temperature as a mapped temperature code.
* The temperature is converted differently depending on the calibration type.
*/
static int temp_to_code(struct exynos4_tmu_data *data, u8 temp)
{
struct exynos4_tmu_platform_data *pdata = data->pdata;
int temp_code;
/* temp should range between 25 and 125 */
if (temp < 25 || temp > 125) {
temp_code = -EINVAL;
goto out;
}
switch (pdata->cal_type) {
case TYPE_TWO_POINT_TRIMMING:
temp_code = (temp - 25) *
(data->temp_error2 - data->temp_error1) /
(85 - 25) + data->temp_error1;
break;
case TYPE_ONE_POINT_TRIMMING:
temp_code = temp + data->temp_error1 - 25;
break;
default:
temp_code = temp + EXYNOS4_TMU_DEF_CODE_TO_TEMP_OFFSET;
break;
}
out:
return temp_code;
}
/*
* Calculate a temperature value from a temperature code.
* The unit of the temperature is degree Celsius.
*/
static int code_to_temp(struct exynos4_tmu_data *data, u8 temp_code)
{
struct exynos4_tmu_platform_data *pdata = data->pdata;
int temp;
/* temp_code should range between 75 and 175 */
if (temp_code < 75 || temp_code > 175) {
temp = -ENODATA;
goto out;
}
switch (pdata->cal_type) {
case TYPE_TWO_POINT_TRIMMING:
temp = (temp_code - data->temp_error1) * (85 - 25) /
(data->temp_error2 - data->temp_error1) + 25;
break;
case TYPE_ONE_POINT_TRIMMING:
temp = temp_code - data->temp_error1 + 25;
break;
default:
temp = temp_code - EXYNOS4_TMU_DEF_CODE_TO_TEMP_OFFSET;
break;
}
out:
return temp;
}
static int exynos4_tmu_initialize(struct platform_device *pdev)
{
struct exynos4_tmu_data *data = platform_get_drvdata(pdev);
struct exynos4_tmu_platform_data *pdata = data->pdata;
unsigned int status, trim_info;
int ret = 0, threshold_code;
mutex_lock(&data->lock);
clk_enable(data->clk);
status = readb(data->base + EXYNOS4_TMU_REG_STATUS);
if (!status) {
ret = -EBUSY;
goto out;
}
/* Save trimming info in order to perform calibration */
trim_info = readl(data->base + EXYNOS4_TMU_REG_TRIMINFO);
data->temp_error1 = trim_info & EXYNOS4_TMU_TRIM_TEMP_MASK;
data->temp_error2 = ((trim_info >> 8) & EXYNOS4_TMU_TRIM_TEMP_MASK);
/* Write temperature code for threshold */
threshold_code = temp_to_code(data, pdata->threshold);
if (threshold_code < 0) {
ret = threshold_code;
goto out;
}
writeb(threshold_code,
data->base + EXYNOS4_TMU_REG_THRESHOLD_TEMP);
writeb(pdata->trigger_levels[0],
data->base + EXYNOS4_TMU_REG_TRIG_LEVEL0);
writeb(pdata->trigger_levels[1],
data->base + EXYNOS4_TMU_REG_TRIG_LEVEL1);
writeb(pdata->trigger_levels[2],
data->base + EXYNOS4_TMU_REG_TRIG_LEVEL2);
writeb(pdata->trigger_levels[3],
data->base + EXYNOS4_TMU_REG_TRIG_LEVEL3);
writel(EXYNOS4_TMU_INTCLEAR_VAL,
data->base + EXYNOS4_TMU_REG_INTCLEAR);
out:
clk_disable(data->clk);
mutex_unlock(&data->lock);
return ret;
}
static void exynos4_tmu_control(struct platform_device *pdev, bool on)
{
struct exynos4_tmu_data *data = platform_get_drvdata(pdev);
struct exynos4_tmu_platform_data *pdata = data->pdata;
unsigned int con, interrupt_en;
mutex_lock(&data->lock);
clk_enable(data->clk);
con = pdata->reference_voltage << EXYNOS4_TMU_REF_VOLTAGE_SHIFT |
pdata->gain << EXYNOS4_TMU_GAIN_SHIFT;
if (on) {
con |= EXYNOS4_TMU_CORE_ON;
interrupt_en = pdata->trigger_level3_en << 12 |
pdata->trigger_level2_en << 8 |
pdata->trigger_level1_en << 4 |
pdata->trigger_level0_en;
} else {
con |= EXYNOS4_TMU_CORE_OFF;
interrupt_en = 0; /* Disable all interrupts */
}
writel(interrupt_en, data->base + EXYNOS4_TMU_REG_INTEN);
writel(con, data->base + EXYNOS4_TMU_REG_CONTROL);
clk_disable(data->clk);
mutex_unlock(&data->lock);
}
static int exynos4_tmu_read(struct exynos4_tmu_data *data)
{
u8 temp_code;
int temp;
mutex_lock(&data->lock);
clk_enable(data->clk);
temp_code = readb(data->base + EXYNOS4_TMU_REG_CURRENT_TEMP);
temp = code_to_temp(data, temp_code);
clk_disable(data->clk);
mutex_unlock(&data->lock);
return temp;
}
static void exynos4_tmu_work(struct work_struct *work)
{
struct exynos4_tmu_data *data = container_of(work,
struct exynos4_tmu_data, irq_work);
mutex_lock(&data->lock);
clk_enable(data->clk);
writel(EXYNOS4_TMU_INTCLEAR_VAL, data->base + EXYNOS4_TMU_REG_INTCLEAR);
kobject_uevent(&data->hwmon_dev->kobj, KOBJ_CHANGE);
enable_irq(data->irq);