>> Okay - I understand. So I should just get rid of all of the labels in
>> the whole driver?
>
> Yes, the foo#_label attributes are only there for the rare exception when
> the driver has knowledge about the pcb layouts used / about which
> motherboard it is operating on and which input is measuring what on that
> motherboard.
Okay, done, and updated the documentation too. It also occurred to me that
I should probably send it through checkpatch.pl, and it was a good thing that
I did, because there were style issues. The result is attached.
Thanks for the comments,
Jordan
--
Jordan Crouse
Systems Software Development Engineer
Advanced Micro Devices, Inc.
-------------- next part --------------
[PATCH] hwmon: Add a driver for the ADT7475 thermal sensor
From: Jordan Crouse <jordan.crouse at amd.com>
HWMON driver for the ADT7475 thermal sensor.
Signed-off-by: Jordan Crouse <jordan.crouse at amd.com>
---
Documentation/hwmon/adt7475 | 104 +++++
drivers/hwmon/Kconfig | 10
drivers/hwmon/Makefile | 2
drivers/hwmon/adt7475.c | 938 +++++++++++++++++++++++++++++++++++++++++++
4 files changed, 1054 insertions(+), 0 deletions(-)
diff --git a/Documentation/hwmon/adt7475 b/Documentation/hwmon/adt7475
new file mode 100644
index 0000000..64eb78c
--- /dev/null
+++ b/Documentation/hwmon/adt7475
@@ -0,0 +1,104 @@
+This describes the interface for the ADT7475 driver:
+
+(there are 4 fans, numbered fan1 to fan4):
+
+fanX_input Read the current speed of the fan (in RPMs)
+fanX_min Read/write the minimum speed of the fan. Dropping
+ below this sets an alarm.
+
+(there are three PWMs, numbered pwm1 to pwm3):
+
+pwmX Read/write the current duty cycle of the PWM. Writes
+ only have effect when auto mode is turned off (see
+ below).
+
+pwmX_enable Read/write the PWM configuration based on the following
+ table:
+
+ 0 - Remote1 temp controls PWMx (auto mode)
+ 1 - local temp controls PWMx (auto mode)
+ 2 - remote2 temp controls PWMx (auto mode)
+ 3 - PWMx runs at full speed
+ 4 - PWMx is disabled
+ 5 - Use fastest speed calculated by local and remote2
+ 6 - Use fastest speed calculated by all three channels
+ 7 - Manual mode
+
+pwmX_freq Read/write the PWM frequency. The value returned is
+ an index into the following table:
+
+ 0x0 - 11.0 Hz
+ 0x1 - 14.7 Hz
+ 0x2 - 22.1 Hz
+ 0x3 - 29.4 Hz
+ 0x4 - 35.3 Hz
+ 0x5 - 44.1 Hz
+ 0x6 - 58.8 Hz
+ 0x7 - 88.2 Hz
+
+pwmX_max Read/write the maximum PWM duty cycle. The PWM
+ duty cycle will never exceed this.
+
+pwmX_min Read/write the minimum PWM duty cycle in automatic mode
+
+(there are three temperature settings numbered temp1 to temp3):
+
+tempX_input Read the current temperature. The value is in milli
+ degrees of Celsius.
+
+tempX_max Read/write the upper temperature limit - exceeding this
+ will cause an alarm.
+
+tempX_min Read/write the lower temperature limit - exceeding this
+ will cause an alarm.
+
+tempX_offset Read/write the temperature adjustment offset
+
+tempX_crit_max Read/write the THERM limit for remote1. Exceeding this
+ causes the chip to force the processor off.
+
+tempX_auto_min Read/write the minimum temperature where the fans will
+ turn on in automatic mode.
+
+tempX_auto_range Read/write the range over which the automatic fan
+ control will be executed. The value returned is a
+ index into the following table:
+
+ 0x0 - 2 C
+ 0x1 - 2.5 C
+ 0x2 - 3.33 C
+ 0x3 - 4 C
+ 0x4 - 5 C
+ 0x5 - 6.67 C
+ 0x6 - 8 C
+ 0x7 - 10 C
+ 0x8 - 13.33 C
+ 0x9 - 16 C
+ 0xA - 20 C
+ 0xB - 26.67 C
+ 0xC - 32 C
+ 0xD - 40 C
+ 0xE - 53.33 C
+ 0xF - 80 C
+
+tempX_crit_hyst set the temperature range below crit_max where the
+ fans will stay on - this helps drive the temperature
+ low enough so it doesn't stay near the edge and
+ cause THERM to keep tripping.
+
+tempX_alarm Read a 1 if the max/min alarm is set
+tempX_crit_alarm Read a 1 if the critical limit is exceeded
+tempX_fault Read a 1 if either temp1 or temp3 diode has a fault
+
+(There are two voltage settings, in1 and in2):
+
+inX_input Read the current voltage on VCC. Value is in
+ millivolts.
+
+inX_min read/write the minimum voltage limit.
+ Dropping below this causes an alarm.
+
+inX_max read/write the maximum voltage limit.
+ Exceeding this causes an alarm.
+
+inX_alarm Read a 1 if the max/min alarm is set.
diff --git a/drivers/hwmon/Kconfig b/drivers/hwmon/Kconfig
index 368879f..131b812 100644
--- a/drivers/hwmon/Kconfig
+++ b/drivers/hwmon/Kconfig
@@ -153,6 +153,16 @@ config SENSORS_ADT7473
This driver can also be built as a module. If so, the module
will be called adt7473.
+config SENSORS_ADT7475
+ tristate "Analog Devices ADT7475"
+ depends on I2C && EXPERIMENTAL
+ help
+ If you say yes here you get support for the Analog Devices
+ ADT7475 temperature monitoring chips.
+
+ This driver can also be build as a module. If so, the module
+ will be called adt7475.
+
config SENSORS_K8TEMP
tristate "AMD Athlon64/FX or Opteron temperature sensor"
depends on X86 && PCI && EXPERIMENTAL
diff --git a/drivers/hwmon/Makefile b/drivers/hwmon/Makefile
index 3bdb05a..41567be 100644
--- a/drivers/hwmon/Makefile
+++ b/drivers/hwmon/Makefile
@@ -25,6 +25,8 @@ obj-$(CONFIG_SENSORS_ADM9240) += adm9240.o
obj-$(CONFIG_SENSORS_ADS7828) += ads7828.o
obj-$(CONFIG_SENSORS_ADT7470) += adt7470.o
obj-$(CONFIG_SENSORS_ADT7473) += adt7473.o
+obj-$(CONFIG_SENSORS_ADT7475) += adt7475.o
+
obj-$(CONFIG_SENSORS_APPLESMC) += applesmc.o
obj-$(CONFIG_SENSORS_AMS) += ams/
obj-$(CONFIG_SENSORS_ATXP1) += atxp1.o
diff --git a/drivers/hwmon/adt7475.c b/drivers/hwmon/adt7475.c
new file mode 100644
index 0000000..891687d
--- /dev/null
+++ b/drivers/hwmon/adt7475.c
@@ -0,0 +1,938 @@
+/*
+ * adt7475 - Thermal sensor driver for the ADT7475 chip and derivatives
+ * Copyright (C) 2007-2008, Advanced Micro Devices, Inc.
+ *
+ * Derived from the lm83 driver by Jean Delvare
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/i2c.h>
+#include <linux/hwmon.h>
+#include <linux/hwmon-sysfs.h>
+#include <linux/err.h>
+
+/* Indexes for the sysfs hooks */
+
+#define INPUT 0
+#define MIN 1
+#define MAX 2
+#define CONTROL 3
+#define OFFSET 3
+#define AUTOMIN 4
+#define FREQ 4
+#define THERM 5
+#define HYSTERSIS 6
+#define RANGE 7
+#define ALARM 9
+#define CRIT_ALARM 10
+#define FAULT 11
+
+
+/* 7475 Common Registers */
+
+#define REG_VOLTAGE_BASE 0x21
+#define REG_TEMP_BASE 0x25
+#define REG_TACH_BASE 0x28
+#define REG_PWM_BASE 0x30
+#define REG_PWM_MAX_BASE 0x38
+
+#define REG_DEVID 0x3D
+#define REG_VENDID 0x3E
+
+#define REG_CONFIG1 0x40
+#define REG_STATUS1 0x41
+#define REG_STATUS2 0x42
+
+/* Not all the alarm bits are enabled - mask the ones we don't use */
+#define ALARM_MASK 0xFE76
+
+#define REG_VOLTAGE_MIN_BASE 0x46
+#define REG_VOLTAGE_MAX_BASE 0x47
+
+#define REG_TEMP_MIN_BASE 0x4E
+#define REG_TEMP_MAX_BASE 0x4F
+
+#define REG_TACH_MIN_BASE 0x54
+
+#define REG_PWM_CONFIG_BASE 0x5C
+
+#define REG_TEMP_TRANGE_BASE 0x5F
+
+#define REG_ACOUSTICS1 0x62
+#define REG_ACOUSTICS2 0x63
+
+#define REG_PWM_MIN_BASE 0x64
+
+#define REG_TEMP_TMIN_BASE 0x67
+#define REG_TEMP_THERM_BASE 0x6A
+
+#define REG_REMOTE1_HYSTERSIS 0x6D
+#define REG_REMOTE2_HYSTERSIS 0x6E
+
+#define REG_TEMP_OFFSET_BASE 0x70
+
+#define REG_CONFIG2 0x73
+#define REG_INTERRUPT_MASK1 0x74
+#define REG_INTERRUPT_MASK2 0x75
+#define REG_EXTEND1 0x76
+#define REG_EXTEND2 0x77
+#define REG_CONFIG3 0x78
+#define REG_THERM_TIMER_STATUS 0x79
+#define REG_THERM_TIMER_LIMIT 0x7A
+#define REG_TACH_PULSES 0x7B
+#define REG_CONFIG5 0x7C
+
+#define CONFIG5_TWOSCOMP 0x01
+#define CONFIG5_TEMPOFFSET 0x02
+
+#define REG_CONFIG4 0x7D
+
+/* ADT7475 Settings */
+
+#define ADT7475_VOLTAGE_COUNT 2
+#define ADT7475_TEMP_COUNT 3
+#define ADT7475_TACH_COUNT 4
+#define ADT7475_PWM_COUNT 3
+
+/* 7475 specific registers */
+
+#define REG_CONFIG6 0x10
+#define REG_CONFIG7 0x11
+
+
+/* Macro to read the registers */
+
+#define adt7475_read(reg) i2c_smbus_read_byte_data(client, (reg))
+
+/* Macros to easily index the registers */
+
+#define TACH_REG(idx) (REG_TACH_BASE + ((idx) * 2))
+#define TACH_MIN_REG(idx) (REG_TACH_MIN_BASE + ((idx) * 2))
+
+#define PWM_REG(idx) (REG_PWM_BASE + (idx))
+#define PWM_MAX_REG(idx) (REG_PWM_MAX_BASE + (idx))
+#define PWM_MIN_REG(idx) (REG_PWM_MIN_BASE + (idx))
+#define PWM_CONFIG_REG(idx) (REG_PWM_CONFIG_BASE + (idx))
+
+#define VOLTAGE_REG(idx) (REG_VOLTAGE_BASE + (idx))
+#define VOLTAGE_MIN_REG(idx) (REG_VOLTAGE_MIN_BASE + ((idx) * 2))
+#define VOLTAGE_MAX_REG(idx) (REG_VOLTAGE_MAX_BASE + ((idx) * 2))
+
+#define TEMP_REG(idx) (REG_TEMP_BASE + (idx))
+#define TEMP_MIN_REG(idx) (REG_TEMP_MIN_BASE + ((idx) * 2))
+#define TEMP_MAX_REG(idx) (REG_TEMP_MAX_BASE + ((idx) * 2))
+#define TEMP_TMIN_REG(idx) (REG_TEMP_TMIN_BASE + (idx))
+#define TEMP_THERM_REG(idx) (REG_TEMP_THERM_BASE + (idx))
+#define TEMP_OFFSET_REG(idx) (REG_TEMP_OFFSET_BASE + (idx))
+#define TEMP_TRANGE_REG(idx) (REG_TEMP_TRANGE_BASE + (idx))
+
+/* Convert the tach reading into RPMs */
+
+#define TACH2RPM(val) ((90000 * 60) / (val))
+#define RPM2TACH(val) ((90000 * 60) / (val))
+
+/* Convert the voltage registers into mW */
+
+#define REG2VCC(val) ((42 * (int)(val)) / 10)
+#define REG2VCCP(val) ((293 * (int)(val)) / 100)
+
+#define VCC2REG(val) (((val) * 10) / 42)
+#define VCCP2REG(val) (((val) * 100) / 293)
+
+/* 2's complement temp conversion - this is used when CONFIG5 bit 0 is set */
+
+#define REG2TEMP(val) ((((val) >> 2) * 1000) + (((val) & 3) * 250))
+
+#define TEMP2REG(val) ((val) <= -128000 ? -128 : \
+ (val) >= 127000 ? 127 : \
+ (val) < 0 ? ((val) - 500) / 1000 : \
+ ((val) + 500) / 1000)
+
+
+/* Offset 64 temp conversion - this is used when CONFIG5 bit 0 is clear */
+
+#define OFF64_REG2TEMP(val) (((((val) >> 2) - 64) * 1000) + (((val) & 3) * 250))
+#define OFF64_TEMP2REG(val) ((((val) + 64500) / 1000) << 2)
+
+static unsigned short normal_i2c[] = { 0x2e, I2C_CLIENT_END };
+
+I2C_CLIENT_INSMOD_1(adt7475);
+
+struct adt7475_data {
+ struct i2c_client client;
+ struct device *hwmon_dev;
+ struct mutex lock;
+
+ int type;
+ char temptype;
+
+ char valid;
+ unsigned long updated;
+
+ u16 alarms;
+ u16 voltage[3][3];
+ s16 temp[6][3];
+ u16 tach[2][4];
+ u8 pwm[4][3];
+ u8 range[3];
+};
+
+static struct i2c_driver adt7475_driver;
+static struct adt7475_data *adt7475_update_device(struct device *dev);
+
+static u16 adt7475_read_word(struct i2c_client *client, int reg)
+{
+ u16 val;
+
+ val = i2c_smbus_read_byte_data(client, reg);
+ val |= (i2c_smbus_read_byte_data(client, reg + 1) << 8);
+
+ return val;
+}
+
+static void adt7475_write_word(struct i2c_client *client, int reg, u16 val)
+{
+ i2c_smbus_write_byte_data(client, reg + 1, val >> 8);
+ i2c_smbus_write_byte_data(client, reg, val & 0xFF);
+}
+
+static ssize_t show_voltage(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct adt7475_data *data = adt7475_update_device(dev);
+ struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
+ unsigned short val = data->voltage[sattr->nr][sattr->index];
+
+ switch (sattr->nr) {
+ case ALARM:
+ return sprintf(buf, "%d\n",
+ (data->alarms >> (sattr->index + 1)) & 1);
+ default:
+ return sprintf(buf, "%d\n",
+ sattr->index == 0 ? REG2VCCP(val) : REG2VCC(val));
+ }
+}
+
+static ssize_t set_voltage(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count) {
+
+ struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
+ struct i2c_client *client = to_i2c_client(dev);
+ struct adt7475_data *data = i2c_get_clientdata(client);
+ long val = simple_strtol(buf, NULL, 10);
+ unsigned char reg;
+
+ mutex_lock(&data->lock);
+
+ data->voltage[sattr->nr][sattr->index] =
+ sattr->index ? VCC2REG(val) : VCCP2REG(val);
+
+ if (sattr->nr == MIN)
+ reg = VOLTAGE_MIN_REG(sattr->index);
+ else
+ reg = VOLTAGE_MAX_REG(sattr->index);
+
+ i2c_smbus_write_byte_data(client, reg,
+ (u8) (data->voltage[sattr->nr][sattr->index] >> 2));
+ mutex_unlock(&data->lock);
+
+ return count;
+}
+
+static ssize_t show_temp(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct adt7475_data *data = adt7475_update_device(dev);
+ struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
+ unsigned short val = data->temp[sattr->nr][sattr->index];
+ int ret = 0;
+ u8 out;
+
+ switch (sattr->nr) {
+ case HYSTERSIS:
+ if (sattr->index != 1)
+ out = (val >> 4) & 0xF;
+ else
+ out = (val & 0xF);
+
+ ret = sprintf(buf, "%d\n", out);
+ break;
+
+ case OFFSET:
+ /* Offset is always 2's complement, regardless of the
+ * setting in CONFIG5 */
+
+ if (data->temptype & CONFIG5_TEMPOFFSET)
+ ret = sprintf(buf, "%d\n", (s8) val);
+ else
+ ret = sprintf(buf, "%d\n", ((s8)val) >> 1);
+ break;
+
+ case ALARM:
+ ret = sprintf(buf, "%d\n",
+ (data->alarms >> (sattr->index + 4)) & 1);
+ break;
+
+ case CRIT_ALARM:
+ ret = sprintf(buf, "%d\n",
+ ((data->alarms & 0x200) ? 1 : 0));
+ break;
+
+ case FAULT:
+ /* Note - only for remote1 and remote2 */
+
+ ret = sprintf(buf, "%d\n",
+ (data->alarms & (sattr->index ? 0x4000 : 0x8000)));
+ break;
+
+ default:
+ /* All other temp values are in the configured format */
+
+ ret = sprintf(buf, "%d\n",
+ (data->temptype & CONFIG5_TWOSCOMP) ?
+ REG2TEMP(val) : OFF64_REG2TEMP(val));
+ }
+
+ return ret;
+}
+
+static ssize_t set_temp(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
+ struct i2c_client *client = to_i2c_client(dev);
+ struct adt7475_data *data = i2c_get_clientdata(client);
+ long val = simple_strtol(buf, NULL, 10);
+ unsigned char reg = 0;
+ u8 out;
+ int l;
+
+ mutex_lock(&data->lock);
+
+ switch (sattr->nr) {
+ case OFFSET:
+ l = val;
+
+ if (data->temptype & CONFIG5_TEMPOFFSET) {
+ if (l > 127)
+ l = 127;
+ else if (l < -127)
+ l = -126;
+ } else {
+ if (l > 64)
+ l = 64;
+ else if (l < -63)
+ l = -63;
+
+ l <<= 1;
+ }
+
+ out = data->temp[OFFSET][sattr->index] = (u8) l;
+ break;
+
+ case HYSTERSIS:
+ if (sattr->index != 1) {
+ data->temp[HYSTERSIS][sattr->index] &= 0xF0;
+ data->temp[HYSTERSIS][sattr->index] |= (val & 0xF) << 4;
+ } else {
+ data->temp[HYSTERSIS][sattr->index] &= 0x0F;
+ data->temp[HYSTERSIS][sattr->index] |= (val & 0xF);
+ }
+
+ out = data->temp[HYSTERSIS][sattr->index];
+ break;
+
+ default:
+ data->temp[sattr->nr][sattr->index] =
+ (data->temptype & CONFIG5_TWOSCOMP) ?
+ TEMP2REG(val) : OFF64_TEMP2REG(val);
+
+ /* We maintain an extra 2 digits of precision for simplicity
+ * - shift those back off before writing the value */
+
+ out = (u8) (data->temp[sattr->nr][sattr->index] >> 2);
+ }
+
+ switch (sattr->nr) {
+ case MIN:
+ reg = TEMP_MIN_REG(sattr->index);
+ break;
+ case MAX:
+ reg = TEMP_MAX_REG(sattr->index);
+ break;
+ case OFFSET:
+ reg = TEMP_OFFSET_REG(sattr->index);
+ break;
+ case AUTOMIN:
+ reg = TEMP_TMIN_REG(sattr->index);
+ break;
+ case THERM:
+ reg = TEMP_THERM_REG(sattr->index);
+ break;
+ case HYSTERSIS:
+ if (sattr->index != 2)
+ reg = REG_REMOTE1_HYSTERSIS;
+ else
+ reg = REG_REMOTE2_HYSTERSIS;
+
+ break;
+ }
+
+ i2c_smbus_write_byte_data(client, reg, out);
+
+ mutex_unlock(&data->lock);
+ return count;
+}
+
+static ssize_t show_range(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct adt7475_data *data = adt7475_update_device(dev);
+ struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
+
+ unsigned short val = data->range[sattr->index];
+ return sprintf(buf, "%d\n", (val >> 4) & 0xF);
+}
+
+static ssize_t set_range(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct adt7475_data *data = adt7475_update_device(dev);
+ struct i2c_client *client = to_i2c_client(dev);
+ struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
+ long val = simple_strtol(buf, NULL, 10);
+
+ mutex_lock(&data->lock);
+
+ data->range[sattr->index] &= ~0xF0;
+ data->range[sattr->index] |= (val & 0xF) << 4;
+
+ i2c_smbus_write_byte_data(client, TEMP_TRANGE_REG(sattr->index),
+ data->range[sattr->index]);
+
+ mutex_unlock(&data->lock);
+ return count;
+}
+
+static ssize_t show_tach(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct adt7475_data *data = adt7475_update_device(dev);
+ struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
+
+
+ /* 0xFFFF means the period was invalid */
+
+ switch (sattr->nr) {
+ case ALARM:
+ return sprintf(buf, "%d\n",
+ (data->alarms >> (sattr->index + 10) & 1));
+ default:
+ if (data->tach[sattr->nr][sattr->index] == 0xFFFF)
+ return sprintf(buf, "0\n");
+ else
+ return sprintf(buf, "%d\n",
+ TACH2RPM(data->tach[sattr->nr][sattr->index]));
+ }
+}
+
+
+
+
+static ssize_t set_tach(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+
+ struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
+ struct i2c_client *client = to_i2c_client(dev);
+ struct adt7475_data *data = i2c_get_clientdata(client);
+
+ long val = simple_strtol(buf, NULL, 10);
+
+ mutex_lock(&data->lock);
+
+ data->tach[MIN][sattr->index] = (u16) RPM2TACH(val);
+
+ adt7475_write_word(client, TACH_MIN_REG(sattr->index),
+ data->tach[MIN][sattr->index]);
+
+ mutex_unlock(&data->lock);
+ return count;
+}
+
+static ssize_t show_pwm(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct adt7475_data *data = adt7475_update_device(dev);
+ struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
+
+ return sprintf(buf, "%d\n", data->pwm[sattr->nr][sattr->index]);
+}
+
+static ssize_t show_pwmctrl(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct adt7475_data *data = adt7475_update_device(dev);
+ struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
+
+ return sprintf(buf, "%d\n",
+ (data->pwm[CONTROL][sattr->index] >> 5) & 7);
+}
+
+static ssize_t show_pwmfreq(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct adt7475_data *data = adt7475_update_device(dev);
+ struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
+
+ return sprintf(buf, "%d\n", data->range[sattr->index] & 3);
+}
+
+static ssize_t set_pwm(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+
+ struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
+ struct i2c_client *client = to_i2c_client(dev);
+ struct adt7475_data *data = i2c_get_clientdata(client);
+
+ long val = simple_strtol(buf, NULL, 10);
+ unsigned char reg = 0;
+
+ mutex_lock(&data->lock);
+
+ data->pwm[sattr->nr][sattr->index] = (u8) val;
+
+ switch (sattr->nr) {
+ case INPUT:
+ /* If we are not in manual mode, then we shouldn't allow
+ * the user to set the pwm speed */
+
+ if (((data->pwm[CONTROL][sattr->index] >> 5) & 7) != 7)
+ return 0;
+
+ reg = PWM_REG(sattr->index);
+ break;
+
+ case MIN:
+ reg = PWM_MIN_REG(sattr->index);
+ break;
+
+ case MAX:
+ reg = PWM_MAX_REG(sattr->index);
+ break;
+ }
+
+ i2c_smbus_write_byte_data(client, reg,
+ data->pwm[sattr->nr][sattr->index]);
+ mutex_unlock(&data->lock);
+
+ return count;
+}
+
+static ssize_t set_pwmctrl(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
+ struct i2c_client *client = to_i2c_client(dev);
+ struct adt7475_data *data = i2c_get_clientdata(client);
+
+ long val = simple_strtol(buf, NULL, 10);
+
+ mutex_lock(&data->lock);
+
+ data->pwm[CONTROL][sattr->index] &= ~0xE0;
+ data->pwm[CONTROL][sattr->index] |= (val & 7) << 5;
+
+ i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(sattr->index),
+ data->pwm[CONTROL][sattr->index]);
+
+ mutex_unlock(&data->lock);
+ return count;
+}
+
+static ssize_t set_pwmfreq(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
+ struct i2c_client *client = to_i2c_client(dev);
+ struct adt7475_data *data = i2c_get_clientdata(client);
+
+ long val = simple_strtol(buf, NULL, 10);
+
+ mutex_lock(&data->lock);
+
+ data->range[sattr->index] &= ~3;
+ data->range[sattr->index] |= val & 0x03;
+
+ i2c_smbus_write_byte_data(client, TEMP_TRANGE_REG(sattr->index),
+ data->range[sattr->index]);
+
+ mutex_unlock(&data->lock);
+ return count;
+}
+
+static SENSOR_DEVICE_ATTR_2(in1_input, S_IRUGO, show_voltage, NULL, INPUT, 0);
+static SENSOR_DEVICE_ATTR_2(in1_max, S_IRUGO | S_IWUSR, show_voltage, set_voltage, MAX, 0);
+static SENSOR_DEVICE_ATTR_2(in1_min, S_IRUGO | S_IWUSR, show_voltage, set_voltage, MIN, 0);
+static SENSOR_DEVICE_ATTR_2(in1_alarm, S_IRUGO, show_voltage, NULL, ALARM, 0);
+static SENSOR_DEVICE_ATTR_2(in2_input, S_IRUGO, show_voltage, NULL, INPUT, 1);
+static SENSOR_DEVICE_ATTR_2(in2_max, S_IRUGO | S_IWUSR, show_voltage, set_voltage, MAX, 1);
+static SENSOR_DEVICE_ATTR_2(in2_min, S_IRUGO | S_IWUSR, show_voltage, set_voltage, MIN, 1);
+static SENSOR_DEVICE_ATTR_2(in2_alarm, S_IRUGO, show_voltage, NULL, ALARM, 1);
+static SENSOR_DEVICE_ATTR_2(temp1_input, S_IRUGO, show_temp, NULL, INPUT, 0);
+static SENSOR_DEVICE_ATTR_2(temp1_alarm, S_IRUGO, show_temp, NULL, ALARM, 0);
+static SENSOR_DEVICE_ATTR_2(temp1_crit_alarm, S_IRUGO, show_temp, NULL, CRIT_ALARM, 0);
+static SENSOR_DEVICE_ATTR_2(temp1_fault, S_IRUGO, show_temp, NULL, FAULT, 0);
+static SENSOR_DEVICE_ATTR_2(temp1_max, S_IRUGO | S_IWUSR, show_temp, set_temp, MAX, 0);
+static SENSOR_DEVICE_ATTR_2(temp1_min, S_IRUGO | S_IWUSR, show_temp, set_temp, MIN, 0);
+static SENSOR_DEVICE_ATTR_2(temp1_offset, S_IRUGO | S_IWUSR, show_temp, set_temp, OFFSET, 0);
+static SENSOR_DEVICE_ATTR_2(temp1_auto_min, S_IRUGO | S_IWUSR, show_temp, set_temp, AUTOMIN, 0);
+static SENSOR_DEVICE_ATTR_2(temp1_auto_range, S_IRUGO | S_IWUSR, show_range, set_range, 0, 0);
+static SENSOR_DEVICE_ATTR_2(temp1_crit_max, S_IRUGO | S_IWUSR, show_temp, set_temp, THERM, 0);
+static SENSOR_DEVICE_ATTR_2(temp1_crit_hyst, S_IRUGO | S_IWUSR, show_temp, set_temp, HYSTERSIS, 0);
+static SENSOR_DEVICE_ATTR_2(temp2_input, S_IRUGO, show_temp, NULL, INPUT, 1);
+static SENSOR_DEVICE_ATTR_2(temp2_alarm, S_IRUGO, show_temp, NULL, ALARM, 1);
+static SENSOR_DEVICE_ATTR_2(temp2_crit_alarm, S_IRUGO, show_temp, NULL, CRIT_ALARM, 1);
+static SENSOR_DEVICE_ATTR_2(temp2_max, S_IRUGO | S_IWUSR, show_temp, set_temp, MAX, 1);
+static SENSOR_DEVICE_ATTR_2(temp2_min, S_IRUGO | S_IWUSR, show_temp, set_temp, MIN, 1);
+static SENSOR_DEVICE_ATTR_2(temp2_offset, S_IRUGO | S_IWUSR, show_temp, set_temp, OFFSET, 1);
+static SENSOR_DEVICE_ATTR_2(temp2_auto_min, S_IRUGO | S_IWUSR, show_temp, set_temp, AUTOMIN, 1);
+static SENSOR_DEVICE_ATTR_2(temp2_auto_range, S_IRUGO | S_IWUSR, show_range, set_range, 0, 1);
+static SENSOR_DEVICE_ATTR_2(temp2_crit_max, S_IRUGO | S_IWUSR, show_temp, set_temp, THERM, 1);
+static SENSOR_DEVICE_ATTR_2(temp2_crit_hyst, S_IRUGO | S_IWUSR, show_temp, set_temp, HYSTERSIS, 1);
+static SENSOR_DEVICE_ATTR_2(temp3_input, S_IRUGO, show_temp, NULL, INPUT, 2);
+static SENSOR_DEVICE_ATTR_2(temp3_alarm, S_IRUGO, show_temp, NULL, ALARM, 2);
+static SENSOR_DEVICE_ATTR_2(temp3_crit_alarm, S_IRUGO, show_temp, NULL, CRIT_ALARM, 2);
+static SENSOR_DEVICE_ATTR_2(temp3_fault, S_IRUGO, show_temp, NULL, FAULT, 2);
+static SENSOR_DEVICE_ATTR_2(temp3_max, S_IRUGO | S_IWUSR, show_temp, set_temp, MAX, 2);
+static SENSOR_DEVICE_ATTR_2(temp3_min, S_IRUGO | S_IWUSR, show_temp, set_temp, MIN, 2);
+static SENSOR_DEVICE_ATTR_2(temp3_offset, S_IRUGO | S_IWUSR, show_temp, set_temp, OFFSET, 2);
+static SENSOR_DEVICE_ATTR_2(temp3_auto_min, S_IRUGO | S_IWUSR, show_temp, set_temp, AUTOMIN, 2);
+static SENSOR_DEVICE_ATTR_2(temp3_auto_range, S_IRUGO | S_IWUSR, show_range, set_range, 0, 2);
+static SENSOR_DEVICE_ATTR_2(temp3_crit_max, S_IRUGO | S_IWUSR, show_temp, set_temp, THERM, 2);
+static SENSOR_DEVICE_ATTR_2(temp3_crit_hyst, S_IRUGO | S_IWUSR, show_temp, set_temp, HYSTERSIS, 2);
+static SENSOR_DEVICE_ATTR_2(fan1_input, S_IRUGO, show_tach, NULL, INPUT, 0);
+static SENSOR_DEVICE_ATTR_2(fan1_min, S_IRUGO | S_IWUSR, show_tach, set_tach, MIN, 0);
+static SENSOR_DEVICE_ATTR_2(fan1_alarm, S_IRUGO, show_tach, NULL, ALARM, 0);
+static SENSOR_DEVICE_ATTR_2(fan2_input, S_IRUGO, show_tach, NULL, INPUT, 1);
+static SENSOR_DEVICE_ATTR_2(fan2_min, S_IRUGO | S_IWUSR, show_tach, set_tach, MIN, 1);
+static SENSOR_DEVICE_ATTR_2(fan2_alarm, S_IRUGO, show_tach, NULL, ALARM, 1);
+static SENSOR_DEVICE_ATTR_2(fan3_input, S_IRUGO, show_tach, NULL, INPUT, 2);
+static SENSOR_DEVICE_ATTR_2(fan3_min, S_IRUGO | S_IWUSR, show_tach, set_tach, MIN, 2);
+static SENSOR_DEVICE_ATTR_2(fan3_alarm, S_IRUGO, show_tach, NULL, ALARM, 2);
+static SENSOR_DEVICE_ATTR_2(fan4_input, S_IRUGO, show_tach, NULL, INPUT, 3);
+static SENSOR_DEVICE_ATTR_2(fan4_min, S_IRUGO | S_IWUSR, show_tach, set_tach, MIN, 3);
+static SENSOR_DEVICE_ATTR_2(fan4_alarm, S_IRUGO, show_tach, NULL, ALARM, 3);
+static SENSOR_DEVICE_ATTR_2(pwm1, S_IRUGO | S_IWUSR, show_pwm, set_pwm, INPUT, 0);
+static SENSOR_DEVICE_ATTR_2(pwm1_freq, S_IRUGO | S_IWUSR, show_pwmfreq, set_pwmfreq, INPUT, 0);
+static SENSOR_DEVICE_ATTR_2(pwm1_enable, S_IRUGO | S_IWUSR, show_pwmctrl, set_pwmctrl, INPUT, 0);
+static SENSOR_DEVICE_ATTR_2(pwm1_max, S_IRUGO | S_IWUSR, show_pwm, set_pwm, MAX, 0);
+static SENSOR_DEVICE_ATTR_2(pwm1_min, S_IRUGO | S_IWUSR, show_pwm, set_pwm, MIN, 0);
+static SENSOR_DEVICE_ATTR_2(pwm2, S_IRUGO | S_IWUSR, show_pwm, set_pwm, INPUT, 1);
+static SENSOR_DEVICE_ATTR_2(pwm2_freq, S_IRUGO | S_IWUSR, show_pwmfreq, set_pwmfreq, INPUT, 1);
+static SENSOR_DEVICE_ATTR_2(pwm2_enable, S_IRUGO | S_IWUSR, show_pwmctrl, set_pwmctrl, INPUT, 1);
+static SENSOR_DEVICE_ATTR_2(pwm2_max, S_IRUGO | S_IWUSR, show_pwm, set_pwm, MAX, 1);
+static SENSOR_DEVICE_ATTR_2(pwm2_min, S_IRUGO | S_IWUSR, show_pwm, set_pwm, MIN, 1);
+static SENSOR_DEVICE_ATTR_2(pwm3, S_IRUGO | S_IWUSR, show_pwm, set_pwm, INPUT, 2);
+static SENSOR_DEVICE_ATTR_2(pwm3_freq, S_IRUGO | S_IWUSR, show_pwmfreq, set_pwmfreq, INPUT, 2);
+static SENSOR_DEVICE_ATTR_2(pwm3_enable, S_IRUGO | S_IWUSR, show_pwmctrl, set_pwmctrl, INPUT, 2);
+static SENSOR_DEVICE_ATTR_2(pwm3_max, S_IRUGO | S_IWUSR, show_pwm, set_pwm, MAX, 2);
+static SENSOR_DEVICE_ATTR_2(pwm3_min, S_IRUGO | S_IWUSR, show_pwm, set_pwm, MIN, 2);
+
+static struct attribute *adt7475_attrs[] = {
+ &sensor_dev_attr_in1_input.dev_attr.attr,
+ &sensor_dev_attr_in1_max.dev_attr.attr,
+ &sensor_dev_attr_in1_min.dev_attr.attr,
+ &sensor_dev_attr_in1_alarm.dev_attr.attr,
+ &sensor_dev_attr_in2_input.dev_attr.attr,
+ &sensor_dev_attr_in2_max.dev_attr.attr,
+ &sensor_dev_attr_in2_min.dev_attr.attr,
+ &sensor_dev_attr_in2_alarm.dev_attr.attr,
+ &sensor_dev_attr_temp1_input.dev_attr.attr,
+ &sensor_dev_attr_temp1_alarm.dev_attr.attr,
+ &sensor_dev_attr_temp1_crit_alarm.dev_attr.attr,
+ &sensor_dev_attr_temp1_fault.dev_attr.attr,
+ &sensor_dev_attr_temp1_max.dev_attr.attr,
+ &sensor_dev_attr_temp1_min.dev_attr.attr,
+ &sensor_dev_attr_temp1_offset.dev_attr.attr,
+ &sensor_dev_attr_temp1_auto_min.dev_attr.attr,
+ &sensor_dev_attr_temp1_auto_range.dev_attr.attr,
+ &sensor_dev_attr_temp1_crit_max.dev_attr.attr,
+ &sensor_dev_attr_temp1_crit_hyst.dev_attr.attr,
+ &sensor_dev_attr_temp2_input.dev_attr.attr,
+ &sensor_dev_attr_temp2_alarm.dev_attr.attr,
+ &sensor_dev_attr_temp2_crit_alarm.dev_attr.attr,
+ &sensor_dev_attr_temp2_max.dev_attr.attr,
+ &sensor_dev_attr_temp2_min.dev_attr.attr,
+ &sensor_dev_attr_temp2_offset.dev_attr.attr,
+ &sensor_dev_attr_temp2_auto_min.dev_attr.attr,
+ &sensor_dev_attr_temp2_auto_range.dev_attr.attr,
+ &sensor_dev_attr_temp2_crit_max.dev_attr.attr,
+ &sensor_dev_attr_temp2_crit_hyst.dev_attr.attr,
+ &sensor_dev_attr_temp3_input.dev_attr.attr,
+ &sensor_dev_attr_temp3_fault.dev_attr.attr,
+ &sensor_dev_attr_temp3_alarm.dev_attr.attr,
+ &sensor_dev_attr_temp3_crit_alarm.dev_attr.attr,
+ &sensor_dev_attr_temp3_max.dev_attr.attr,
+ &sensor_dev_attr_temp3_min.dev_attr.attr,
+ &sensor_dev_attr_temp3_offset.dev_attr.attr,
+ &sensor_dev_attr_temp3_auto_min.dev_attr.attr,
+ &sensor_dev_attr_temp3_auto_range.dev_attr.attr,
+ &sensor_dev_attr_temp3_crit_max.dev_attr.attr,
+ &sensor_dev_attr_temp3_crit_hyst.dev_attr.attr,
+ &sensor_dev_attr_fan1_input.dev_attr.attr,
+ &sensor_dev_attr_fan1_min.dev_attr.attr,
+ &sensor_dev_attr_fan1_alarm.dev_attr.attr,
+ &sensor_dev_attr_fan2_input.dev_attr.attr,
+ &sensor_dev_attr_fan2_min.dev_attr.attr,
+ &sensor_dev_attr_fan2_alarm.dev_attr.attr,
+ &sensor_dev_attr_fan3_input.dev_attr.attr,
+ &sensor_dev_attr_fan3_min.dev_attr.attr,
+ &sensor_dev_attr_fan3_alarm.dev_attr.attr,
+ &sensor_dev_attr_fan4_input.dev_attr.attr,
+ &sensor_dev_attr_fan4_min.dev_attr.attr,
+ &sensor_dev_attr_fan4_alarm.dev_attr.attr,
+ &sensor_dev_attr_pwm1.dev_attr.attr,
+ &sensor_dev_attr_pwm1_freq.dev_attr.attr,
+ &sensor_dev_attr_pwm1_enable.dev_attr.attr,
+ &sensor_dev_attr_pwm1_max.dev_attr.attr,
+ &sensor_dev_attr_pwm1_min.dev_attr.attr,
+ &sensor_dev_attr_pwm2.dev_attr.attr,
+ &sensor_dev_attr_pwm2_freq.dev_attr.attr,
+ &sensor_dev_attr_pwm2_enable.dev_attr.attr,
+ &sensor_dev_attr_pwm2_max.dev_attr.attr,
+ &sensor_dev_attr_pwm2_min.dev_attr.attr,
+ &sensor_dev_attr_pwm3.dev_attr.attr,
+ &sensor_dev_attr_pwm3_freq.dev_attr.attr,
+ &sensor_dev_attr_pwm3_enable.dev_attr.attr,
+ &sensor_dev_attr_pwm3_max.dev_attr.attr,
+ &sensor_dev_attr_pwm3_min.dev_attr.attr,
+ NULL,
+};
+
+/* The list of chips we support - these index into the following structure */
+
+#define ADT7475 0
+#define ADT7475_MAX_ID 1
+
+static struct adt7475_chip {
+ const char *name;
+ struct attribute_group group;
+} adt7475_chips[ADT7475_MAX_ID] = {
+ { .name = "adt7475",
+ .group = {
+ .attrs = adt7475_attrs,
+ }
+ },
+};
+
+static int adt7475_detect(struct i2c_adapter *adapter, int address, int kind)
+{
+ struct i2c_client *client;
+ struct adt7475_data *data;
+ unsigned char val;
+ int ret = 0;
+
+ if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
+ return 0;
+
+ /* Figure out what type of sensor is attached */
+ data = kzalloc(sizeof(*data), GFP_KERNEL);
+
+ if (data == NULL)
+ return -ENOMEM;
+
+ client = &data->client;
+ i2c_set_clientdata(client, data);
+ client->addr = address;
+ client->adapter = adapter;
+ client->driver = &adt7475_driver;
+ client->flags = 0;
+
+ /* Check the company version first */
+
+ if (i2c_smbus_read_byte_data(client, REG_VENDID) != 0x41) {
+ dev_err(&adapter->dev, "This is not an adt7475 part\n");
+ goto efree;
+ }
+
+ /* Then check the part number */
+ val = i2c_smbus_read_byte_data(client, REG_DEVID);
+
+ if (val == 0x75)
+ data->type = ADT7475;
+ else {
+ dev_err(&adapter->dev,
+ "Couldn't detect a adt7475 part at 0x%02x\n", address);
+
+ goto efree;
+ }
+
+ /* Record how the temp registers are presented, either 2's complement
+ or offset 64
+ */
+
+ data->temptype = i2c_smbus_read_byte_data(client, REG_CONFIG5) & 3;
+
+ /* FIXME: Get the reading type */
+ /* FIXME: Get the scale of the temprature readings */
+
+ strlcpy(client->name, adt7475_chips[data->type].name, I2C_NAME_SIZE);
+
+ data->valid = 0;
+ mutex_init(&data->lock);
+
+ ret = i2c_attach_client(client);
+
+ if (ret)
+ goto efree;
+
+ ret = sysfs_create_group(&client->dev.kobj,
+ &adt7475_chips[data->type].group);
+
+ if (ret)
+ goto edetach;
+
+ data->hwmon_dev = hwmon_device_register(&client->dev);
+
+ if (!IS_ERR(data->hwmon_dev))
+ return 0;
+
+ ret = PTR_ERR(data->hwmon_dev);
+
+ sysfs_remove_group(&client->dev.kobj, &adt7475_chips[data->type].group);
+ edetach:
+ i2c_detach_client(client);
+ efree:
+ kfree(data);
+ return ret;
+}
+
+static int adt7475_attach_adapter(struct i2c_adapter *adapter)
+{
+ if (!(adapter->class & I2C_CLASS_HWMON))
+ return 0;
+
+ return i2c_probe(adapter, &addr_data, adt7475_detect);
+}
+
+static int adt7475_detach_client(struct i2c_client *client)
+{
+ struct adt7475_data *data = i2c_get_clientdata(client);
+ int ret = 0;
+
+ hwmon_device_unregister(data->hwmon_dev);
+ sysfs_remove_group(&client->dev.kobj, &adt7475_chips[data->type].group);
+
+ ret = i2c_detach_client(client);
+ if (!ret)
+ kfree(data);
+ return ret;
+}
+
+static struct i2c_driver adt7475_driver = {
+ .driver = {
+ .name = "adt7475",
+ },
+ .attach_adapter = adt7475_attach_adapter,
+ .detach_client = adt7475_detach_client,
+};
+
+static struct adt7475_data *adt7475_update_device(struct device *dev)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct adt7475_data *data = i2c_get_clientdata(client);
+ u8 ext;
+ int i;
+
+ mutex_lock(&data->lock);
+
+ if (!time_after(jiffies, data->updated + HZ * 2) && data->valid) {
+ mutex_unlock(&data->lock);
+ return data;
+ }
+
+ data->alarms = adt7475_read(REG_STATUS2) << 8;
+ data->alarms |= adt7475_read(REG_STATUS1);
+
+ ext = adt7475_read(REG_EXTEND1);
+
+ /* Get the voltage readings */
+
+ for (i = 0; i < ADT7475_VOLTAGE_COUNT; i++) {
+ data->voltage[INPUT][i] = (adt7475_read(VOLTAGE_REG(i)) << 2) |
+ ((ext >> ((i + 1) * 2)) & 3);
+
+ /* Adjust these values so they match the input precision */
+
+ data->voltage[MIN][i] = adt7475_read(VOLTAGE_MIN_REG(i)) << 2;
+ data->voltage[MAX][i] = adt7475_read(VOLTAGE_MAX_REG(i)) << 2;
+ }
+
+ ext = adt7475_read(REG_EXTEND2);
+
+ for (i = 0; i < ADT7475_TEMP_COUNT; i++) {
+ data->temp[INPUT][i] = (adt7475_read(TEMP_REG(i)) << 2) |
+ ((ext >> ((i + 1) * 2)) & 3);
+
+ /* Adjust these values so they match the input precision */
+
+ data->temp[MIN][i] = adt7475_read(TEMP_MIN_REG(i)) << 2;
+ data->temp[MAX][i] = adt7475_read(TEMP_MAX_REG(i)) << 2;
+ data->temp[AUTOMIN][i] = adt7475_read(TEMP_TMIN_REG(i)) << 2;
+ data->temp[THERM][i] = adt7475_read(TEMP_THERM_REG(i)) << 2;
+
+ data->temp[OFFSET][i] = adt7475_read(TEMP_OFFSET_REG(i));
+ }
+
+ data->temp[HYSTERSIS][0] = (u16) adt7475_read(REG_REMOTE1_HYSTERSIS);
+ data->temp[HYSTERSIS][1] = (u16) adt7475_read(REG_REMOTE1_HYSTERSIS);
+ data->temp[HYSTERSIS][2] = (u16) adt7475_read(REG_REMOTE2_HYSTERSIS);
+
+ for (i = 0; i < ADT7475_TACH_COUNT; i++) {
+ data->tach[INPUT][i] = adt7475_read_word(client, TACH_REG(i));
+ data->tach[MIN][i] = adt7475_read_word(client, TACH_MIN_REG(i));
+ }
+
+ for (i = 0; i < ADT7475_PWM_COUNT; i++) {
+ data->pwm[INPUT][i] = adt7475_read(PWM_REG(i));
+ data->pwm[MAX][i] = adt7475_read(PWM_MAX_REG(i));
+ data->pwm[MIN][i] = adt7475_read(PWM_MIN_REG(i));
+ data->pwm[CONTROL][i] = adt7475_read(PWM_CONFIG_REG(i));
+ }
+
+ data->range[0] = adt7475_read(TEMP_TRANGE_REG(0));
+ data->range[1] = adt7475_read(TEMP_TRANGE_REG(1));
+ data->range[2] = adt7475_read(TEMP_TRANGE_REG(2));
+
+ data->updated = jiffies;
+ data->valid = 1;
+
+ mutex_unlock(&data->lock);
+
+ return data;
+}
+
+static int __init sensors_adt7475_init(void)
+{
+ return i2c_add_driver(&adt7475_driver);
+}
+
+static void __exit sensors_adt7475_exit(void)
+{
+ i2c_del_driver(&adt7475_driver);
+}
+
+MODULE_AUTHOR("Advanced Micro Devices, Inc");
+MODULE_DESCRIPTION("adt7475 driver");
+MODULE_LICENSE("GPL");
+
+module_init(sensors_adt7475_init);
+module_exit(sensors_adt7475_exit);
