[lm-sensors] [Patch] Add Fintek F75375S driver

[lm-sensors] [Patch] Add Fintek F75375S driver

[Riku Voipio]

Hi,

Compared to the last patch I sent here. Updated to match the new sysfs
error handling, some major cleanups and some odd bugs fixed. I'd really
appreceate if someone could this time review the driver, this is one of
the last remaining bits to have full Thecus N2100 support in mainline
Linux.

-- 
"rm -rf" only sounds scary if you don't have backups
-------------- next part --------------
diff --git a/drivers/hwmon/Kconfig b/drivers/hwmon/Kconfig
index c3d4856..1c4ce08 100644
--- a/drivers/hwmon/Kconfig
+++ b/drivers/hwmon/Kconfig
@@ -188,6 +188,16 @@ config SENSORS_F71805F
 	  This driver can also be built as a module.  If so, the module
 	  will be called f71805f.
 
+config SENSORS_F75375S
+	tristate "Fintek F75375S/SP and F75373";
+	depends on HWMON && I2C && EXPERIMENTAL
+	help
+	  If you say yes here you get support for hardware monitoring
+	  features of the Fintek F75375S/SP and F75373
+
+	  This driver can also be built as a module.  If so, the module
+	  will be called f75375s.
+
 config SENSORS_FSCHER
 	tristate "FSC Hermes"
 	depends on HWMON && I2C
diff --git a/drivers/hwmon/Makefile b/drivers/hwmon/Makefile
index 4165c27..b83f6d1 100644
--- a/drivers/hwmon/Makefile
+++ b/drivers/hwmon/Makefile
@@ -24,6 +24,7 @@ obj-$(CONFIG_SENSORS_AMS)	+= ams/
 obj-$(CONFIG_SENSORS_ATXP1)	+= atxp1.o
 obj-$(CONFIG_SENSORS_DS1621)	+= ds1621.o
 obj-$(CONFIG_SENSORS_F71805F)	+= f71805f.o
+obj-$(CONFIG_SENSORS_F75375S)	+= f75375s.o
 obj-$(CONFIG_SENSORS_FSCHER)	+= fscher.o
 obj-$(CONFIG_SENSORS_FSCPOS)	+= fscpos.o
 obj-$(CONFIG_SENSORS_GL518SM)	+= gl518sm.o
diff --git a/drivers/hwmon/f75375s.c b/drivers/hwmon/f75375s.c
new file mode 100644
index 0000000..1bba2fc
--- /dev/null
+++ b/drivers/hwmon/f75375s.c
@@ -0,0 +1,654 @@
+/*
+ * f75375.c - driver for the Fintek F75375/SP and F75373
+ *             hardware monitoring features
+ *
+ * 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., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/jiffies.h>
+#include <linux/hwmon.h>
+#include <linux/hwmon-sysfs.h>
+#include <linux/i2c.h>
+#include <linux/err.h>
+#include <linux/mutex.h>
+#include <asm/io.h>
+
+/* Addresses to scan */
+static unsigned short normal_i2c[] = { 0x2d, 0x2e, I2C_CLIENT_END };
+
+/* Insmod parameters */
+I2C_CLIENT_INSMOD_1(f75375);
+
+/* Fintek F75375 registers  */
+#define F75375_REG_CONFIG0		0x0	/* |start|x|x|x|x|x|soft_pwdn|init| */
+#define F75375_REG_CONFIG1		0x1	/* |pin2_mode|pin4_mode|t1_mode|t2_mode|fan1_linear_mode|fan2_linear_mode|x|x| */
+#define F75375_REG_CONFIG2		0x2
+#define F75375_REG_CONFIG3		0x3
+#define F75375_REG_ADDR			0x4
+#define F75375_REG_INTR			0x31	/* fault registers upto 38 */
+#define F75375_CHIP_ID			0x5A
+#define F75375_REG_VERSION		0x5C
+#define F75375_REG_VENDOR		0x5D
+#define F75375_REG_FAN_TIMER		0x60	/* 6-7 fan1 speed/temp/man|4-5 fan2 */
+
+#define F75375_REG_VOLT(nr)		(0x10 + (nr))
+#define F75375_REG_VOLT_HIGH(nr)	(0x20 + (nr) * 2 )
+#define F75375_REG_VOLT_LOW(nr)		(0x21 + (nr) * 2 )
+
+#define F75375_REG_TEMP(nr)		(0x14 + (nr))
+#define F75375_REG_TEMP_HIGH(nr)	(0x28 + (nr) * 2 )
+#define F75375_REG_TEMP_HYST(nr)	(0x29 + (nr) * 2 )
+
+#define F75375_REG_FAN(nr)		(0x16 + (nr) * 2 )
+#define F75375_REG_FAN_MIN(nr)		(0x2C + (nr) * 2 )
+#define F75375_REG_FAN_MAX(nr)		(0x70 + (nr) * 0x10 )
+	/*72 - 75 expect count */
+#define F75375_REG_FAN_PWM_DUTY(nr)	(0x76 + (nr) * 0x10 )
+#define F75375_REG_FAN_PWM_CLOCK(nr)	(0x7D + (nr) * 0x10 )
+
+#define F75375_REG_FAN_EXP(nr)		(0x74 + (nr) * 0x10 )
+#define F75375_REG_FAN_B_TEMP(nr,step)	((0xA0 + (nr) * 0x10) + (step))	/* 1..4 */
+#define F75375_REG_FAN_B_SPEED(nr,step)	((0xA5 + (nr) * 0x10) + (step) * 2 )
+
+#define F75375_REG_PWM1_RAISE_DUTY	0x69
+#define F75375_REG_PWM2_RAISE_DUTY	0x6A
+#define F75375_REG_PWM1_DROP_DUTY	0x6B
+#define F75375_REG_PWM2_DROP_DUTY	0x6C
+
+#define FAN_CTRL_MODE_MANUAL		0x1
+#define FAN_CTRL_MODE_TEMPERATURE	0x2
+#define FAN_CTRL_MODE_SPEED		0x3
+#define FAN_CTRL_MODE_LINEAR		0x4
+
+#define FAN_CTRL_LINEAR(nr)		(4+nr)
+#define FAN_CTRL_MODE(nr)		(5+(nr*2))
+
+enum kinds {F75375,F75373};
+
+/*
+ * Data structures and manipulation thereof
+ */
+
+struct f75375_data {
+	unsigned short addr;
+	struct i2c_client client;
+	struct class_device *class_dev;
+
+	const char *name;
+	enum kinds kind;
+	struct mutex update_lock;
+	char valid;
+	unsigned long last_updated;	/* In jiffies */
+	unsigned long last_limits;	/* In jiffies */
+
+	/* Register values */
+	u8 in[4];
+	u8 in_max[4];
+	u8 in_min[4];
+	u16 fan[2];
+	u16 fan_min[2];
+	u16 fan_max[2];
+	u16 fan_exp[2];
+	u8 fan_timer;
+	u8 pwm[2];
+	u8 pwm_mode[2];
+	s8 temp[2];
+	s8 temp_high[2];
+	s8 temp_max_hyst[2];
+	u8 alarms[3];
+	u8 fan_enabled;		/* Read once at init time */
+};
+
+static int f75375_attach_adapter(struct i2c_adapter *adapter);
+static int f75375_detect(struct i2c_adapter *adapter, int address, int kind);
+static int f75375_detach_client(struct i2c_client *client);
+
+static struct i2c_driver f75375_driver = {
+	.driver = {
+		.name = "f75375",
+	},
+	.attach_adapter = f75375_attach_adapter,
+	.detach_client = f75375_detach_client,
+};
+
+static inline int f75375_read8(struct i2c_client *client, u8 reg)
+{
+	return i2c_smbus_read_byte_data(client, reg);
+}
+static inline u16 f75375_read16(struct i2c_client *client, u8 reg)
+{
+	return ((i2c_smbus_read_byte_data(client, reg) << 8)
+		| i2c_smbus_read_byte_data(client, reg + 1));
+}
+
+static inline int f75375_write8(struct i2c_client *client, u8 reg,
+				u8 value)
+{
+	return i2c_smbus_write_byte_data(client, reg, value);
+}
+static inline int f75375_write16(struct i2c_client *client, u8 reg,
+				 u16 value)
+{
+	int err = i2c_smbus_write_byte_data(client, reg, (value << 8));
+	if (err)
+		return err;
+	return i2c_smbus_write_byte_data(client, reg + 1, (value & 0xFF));
+}
+static struct f75375_data *f75375_update_device(struct device *dev)
+{
+	struct i2c_client *client = to_i2c_client(dev);
+	struct f75375_data *data = i2c_get_clientdata(client);
+	int nr;
+
+	mutex_lock(&data->update_lock);
+
+	/* Limit registers cache is refreshed after 60 seconds */
+	if (time_after(jiffies, data->last_updated + 60 * HZ)
+		|| !data->valid) {
+		for (nr = 0; nr < 2; nr++) {
+			data->temp_high[nr] +				f75375_read8(client,F75375_REG_TEMP_HIGH(nr));
+			data->temp_max_hyst[nr] +				f75375_read8(client,F75375_REG_TEMP_HYST(nr));
+			data->fan_max[nr] +				f75375_read16(client,
+					      F75375_REG_FAN_MAX(nr));
+			data->fan_exp[nr] +				f75375_read16(client,
+					      F75375_REG_FAN_EXP(nr));
+			data->pwm[nr]+				f75375_read8(client,
+					     F75375_REG_FAN_PWM_DUTY(nr));
+
+		}
+		for (nr = 0; nr < 4; nr++) {
+			data->in_max[nr] +				f75375_read8(client,F75375_REG_VOLT_HIGH(nr));
+			data->in_min[nr] +				f75375_read8(client, F75375_REG_VOLT_LOW(nr));
+		}
+		data->fan_timer = f75375_read8(client,F75375_REG_FAN_TIMER);
+		data->last_limits = jiffies;
+	}
+
+	/* Measurement registers cache is refreshed after 2 second */
+	if (time_after(jiffies, data->last_updated + 2 * HZ)
+		|| !data->valid) {
+		for (nr = 0; nr < 2; nr++) {
+			data->temp[nr] +				f75375_read8(client,F75375_REG_TEMP(nr));
+			data->fan[nr] +				f75375_read16(client,F75375_REG_FAN(nr));
+		}
+		for (nr = 0; nr < 4; nr++) {
+			data->in[nr] +				f75375_read8(client,F75375_REG_VOLT(nr));
+		}
+		data->last_updated = jiffies;
+		data->valid = 1;
+	}
+
+	mutex_unlock(&data->update_lock);
+	return data;
+}
+
+
+static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr,
+			   const char *buf, size_t count)
+{
+	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
+	int nr = sensor_attr->index;
+
+	struct i2c_client *client = to_i2c_client(dev);
+	struct f75375_data *data = i2c_get_clientdata(client);
+	int val = simple_strtol(buf, NULL, 10);
+
+	mutex_lock(&data->update_lock);
+	data->fan_min[nr] = val;
+	f75375_write16(client, F75375_REG_FAN_MIN(nr), data->fan_min[nr]);
+	mutex_unlock(&data->update_lock);
+	return count;
+}
+
+static ssize_t set_fan_exp(struct device *dev, struct device_attribute *attr,
+			   const char *buf, size_t count)
+{
+	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
+	int nr = sensor_attr->index;
+
+	struct i2c_client *client = to_i2c_client(dev);
+	struct f75375_data *data = i2c_get_clientdata(client);
+	int val = simple_strtol(buf, NULL, 10);
+
+	mutex_lock(&data->update_lock);
+	data->fan_exp[nr] = val;
+	f75375_write16(client, F75375_REG_FAN_MIN(nr),data->fan_exp[nr]);
+	mutex_unlock(&data->update_lock);
+	return count;
+}
+
+static ssize_t set_pwm(struct device *dev, struct device_attribute *attr,
+		       const char *buf, size_t count)
+{
+	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
+	int nr = sensor_attr->index;
+
+	struct i2c_client *client = to_i2c_client(dev);
+	struct f75375_data *data = i2c_get_clientdata(client);
+	int val = simple_strtol(buf, NULL, 10);
+
+	mutex_lock(&data->update_lock);
+	data->pwm[nr] = val;
+	f75375_write8(client, F75375_REG_FAN_PWM_DUTY(nr), data->pwm[nr]);
+	mutex_unlock(&data->update_lock);
+	return count;
+}
+
+static ssize_t show_pwm_enable(struct device *dev, struct device_attribute
+			       *attr, char *buf)
+{
+	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
+	int nr = sensor_attr->index;
+	struct f75375_data *data = f75375_update_device(dev);
+	return sprintf(buf, "%d\n", data->pwm_mode[nr]);
+}
+
+static ssize_t set_pwm_enable(struct device *dev, struct device_attribute *attr,
+		       const char *buf, size_t count)
+{
+	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
+	int nr = sensor_attr->index;
+
+	struct i2c_client *client = to_i2c_client(dev);
+	struct f75375_data *data = i2c_get_clientdata(client);
+	int kindÚta->kind;
+	int val = simple_strtol(buf, NULL, 10);
+	u8 fanmode,conf=0;
+
+	if(val < 1 || val > 4 || (kind = F75373 && val = 4 ) )
+		return -EINVAL;
+
+	mutex_lock(&data->update_lock);
+	if (kind=F75375) {
+		conf÷5375_read8(client, F75375_REG_CONFIG1);
+		conf=~(1 << FAN_CTRL_LINEAR(nr) );
+	}
+	fanmode÷5375_read8(client, F75375_REG_FAN_TIMER);
+	fanmode=~(3 << FAN_CTRL_MODE(nr) );
+
+
+	switch(val)
+	{
+	case FAN_CTRL_MODE_MANUAL:
+		fanmode  |= (3 << FAN_CTRL_MODE(nr) );
+		break;
+	case FAN_CTRL_MODE_LINEAR:
+		conf     |= (1 << FAN_CTRL_LINEAR(nr) );
+		fanmode  |= (3 << FAN_CTRL_MODE(nr) );
+		break;
+	case FAN_CTRL_MODE_TEMPERATURE:
+		fanmode  |= (2 << FAN_CTRL_MODE(nr) );
+		break;
+	case FAN_CTRL_MODE_SPEED:
+		break;
+	}
+	if (kind=F75375) {
+		f75375_write8(client, F75375_REG_CONFIG1, conf);
+	}
+	f75375_write8(client, F75375_REG_FAN_TIMER, fanmode);
+	data->pwm_mode[nr] = val;
+	mutex_unlock(&data->update_lock);
+	return count;
+}
+
+#define VOLT_FROM_REG(val) ((val)*8000)
+#define VOLT_TO_REG(val) ((val)/8000)
+
+static ssize_t show_in(struct device *dev, struct device_attribute *attr,
+		       char *buf)
+{
+	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
+	int nr = sensor_attr->index;
+	struct f75375_data *data = f75375_update_device(dev);
+	return sprintf(buf, "%d\n", VOLT_FROM_REG(data->in[nr]));
+}
+
+static ssize_t show_in_max(struct device *dev, struct device_attribute *attr,
+			   char *buf)
+{
+	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
+	int nr = sensor_attr->index;
+	struct f75375_data *data = f75375_update_device(dev);
+	return sprintf(buf, "%d\n", VOLT_FROM_REG(data->in_max[nr]));
+}
+
+static ssize_t show_in_min(struct device *dev, struct device_attribute *attr,
+			   char *buf)
+{
+	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
+	int nr = sensor_attr->index;
+	struct f75375_data *data = f75375_update_device(dev);
+	return sprintf(buf, "%d\n", VOLT_FROM_REG(data->in_max[nr]));
+}
+
+static ssize_t set_in_max(struct device *dev, struct device_attribute *attr,
+			  const char *buf, size_t count)
+{
+	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
+	int nr = sensor_attr->index;
+	struct i2c_client *client = to_i2c_client(dev);
+	struct f75375_data *data = i2c_get_clientdata(client);
+	int val = simple_strtol(buf, NULL, 10);
+	mutex_lock(&data->update_lock);
+	data->in_max[nr] = VOLT_TO_REG(val);
+	f75375_write8(client, F75375_REG_VOLT_HIGH(nr), data->in_max[nr]);
+	mutex_unlock(&data->update_lock);
+	return count;
+}
+
+static ssize_t set_in_min(struct device *dev, struct device_attribute *attr,
+			  const char *buf, size_t count)
+{
+	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
+	int nr = sensor_attr->index;
+	struct i2c_client *client = to_i2c_client(dev);
+	struct f75375_data *data = i2c_get_clientdata(client);
+	int val = simple_strtol(buf, NULL, 10);
+	mutex_lock(&data->update_lock);
+	data->in_min[nr] = VOLT_TO_REG(val);
+	f75375_write8(client, F75375_REG_VOLT_LOW(nr), data->in_min[nr]);
+	mutex_unlock(&data->update_lock);
+	return count;
+}
+#define TEMP_FROM_REG(val) ((val)*1000)
+#define TEMP_TO_REG(val) ((val)/1000)
+
+static ssize_t show_temp(struct device *dev, struct device_attribute *attr,
+			 char *buf)
+{
+	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
+	int nr = sensor_attr->index;
+	struct f75375_data *data = f75375_update_device(dev);
+	return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[nr]));
+}
+
+static ssize_t show_temp_max(struct device *dev, struct device_attribute *attr,
+			     char *buf)
+{
+	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
+	int nr = sensor_attr->index;
+	struct f75375_data *data = f75375_update_device(dev);
+	return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_high[nr]));
+}
+
+static ssize_t show_temp_max_hyst(struct device *dev,
+				  struct device_attribute *attr, char *buf)
+{
+	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
+	int nr = sensor_attr->index;
+	struct f75375_data *data = f75375_update_device(dev);
+	return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max_hyst[nr]));
+}
+
+static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr,
+			    const char *buf, size_t count)
+{
+	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
+	int nr = sensor_attr->index;
+
+	struct i2c_client *client = to_i2c_client(dev);
+	struct f75375_data *data = i2c_get_clientdata(client);
+	int val = simple_strtol(buf, NULL, 10);
+
+	mutex_lock(&data->update_lock);
+	data->temp_high[nr] = TEMP_TO_REG(val);
+	f75375_write8(client, F75375_REG_TEMP_HIGH(nr),data->temp_high[nr]);
+	mutex_unlock(&data->update_lock);
+	return count;
+}
+
+static ssize_t set_temp_max_hyst(struct device *dev,
+				 struct device_attribute *attr,
+				 const char *buf,
+				 size_t count)
+{
+	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
+	int nr = sensor_attr->index;
+
+	struct i2c_client *client = to_i2c_client(dev);
+	struct f75375_data *data = i2c_get_clientdata(client);
+	int val = simple_strtol(buf, NULL, 10);
+
+	mutex_lock(&data->update_lock);
+	data->temp_max_hyst[nr] = TEMP_TO_REG(val);
+	f75375_write8(client, F75375_REG_TEMP_HYST(nr),
+		data->temp_max_hyst[nr]);
+	mutex_unlock(&data->update_lock);
+	return count;
+}
+#define show(thing) \
+static ssize_t show_##thing(struct device *dev, struct device_attribute *attr, \
+			char *buf)\
+{\
+	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);\
+	int nr = sensor_attr->index;\
+	struct f75375_data *data = f75375_update_device(dev); \
+	return sprintf(buf, "%d\n", data->thing[nr]); \
+}
+
+show(fan);
+show(fan_min);
+show(fan_max);
+show(fan_exp);
+show(pwm);
+
+static SENSOR_DEVICE_ATTR(in0_input, S_IRUGO, show_in, NULL, 0);
+static SENSOR_DEVICE_ATTR(in0_max, S_IRUGO|S_IWUSR,
+	show_in_max, set_in_max, 0);
+static SENSOR_DEVICE_ATTR(in0_min, S_IRUGO|S_IWUSR,
+	show_in_min, set_in_min, 0);
+static SENSOR_DEVICE_ATTR(in1_input, S_IRUGO, show_in, NULL, 1);
+static SENSOR_DEVICE_ATTR(in1_max, S_IRUGO|S_IWUSR,
+	show_in_max, set_in_max, 1);
+static SENSOR_DEVICE_ATTR(in1_min, S_IRUGO|S_IWUSR,
+	show_in_min, set_in_min, 1);
+static SENSOR_DEVICE_ATTR(in2_input, S_IRUGO, show_in, NULL, 2);
+static SENSOR_DEVICE_ATTR(in2_max, S_IRUGO|S_IWUSR,
+	show_in_max, set_in_max, 2);
+static SENSOR_DEVICE_ATTR(in2_min, S_IRUGO|S_IWUSR,
+	show_in_min, set_in_min, 2);
+static SENSOR_DEVICE_ATTR(in3_input, S_IRUGO, show_in, NULL, 3);
+static SENSOR_DEVICE_ATTR(in3_max, S_IRUGO|S_IWUSR,
+	show_in_max, set_in_max, 3);
+static SENSOR_DEVICE_ATTR(in3_min, S_IRUGO|S_IWUSR,
+	show_in_min, set_in_min, 3);
+static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_temp, NULL, 0);
+static SENSOR_DEVICE_ATTR(temp1_max_hyst, S_IRUGO | S_IWUSR,
+	show_temp_max_hyst,set_temp_max_hyst, 0);
+static SENSOR_DEVICE_ATTR(temp1_max, S_IRUGO|S_IWUSR,
+	show_temp_max, set_temp_max, 0);
+static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, show_temp, NULL, 1);
+static SENSOR_DEVICE_ATTR(temp2_max_hyst, S_IRUGO | S_IWUSR,
+	show_temp_max_hyst, set_temp_max_hyst, 1);
+static SENSOR_DEVICE_ATTR(temp2_max, S_IRUGO|S_IWUSR,
+	show_temp_max, set_temp_max, 1);
+static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 0);
+static SENSOR_DEVICE_ATTR(fan1_max, S_IRUGO, show_fan_max, NULL, 0);
+static SENSOR_DEVICE_ATTR(fan1_min, S_IRUGO|S_IWUSR,
+	show_fan_min, set_fan_min, 0);
+static SENSOR_DEVICE_ATTR(fan1_exp, S_IRUGO|S_IWUSR,
+	show_fan_exp, set_fan_exp, 0);
+static SENSOR_DEVICE_ATTR(fan2_input, S_IRUGO, show_fan, NULL, 1);
+static SENSOR_DEVICE_ATTR(fan2_max, S_IRUGO, show_fan_max, NULL, 1);
+static SENSOR_DEVICE_ATTR(fan2_min, S_IRUGO|S_IWUSR,
+	show_fan_min, set_fan_min, 1);
+static SENSOR_DEVICE_ATTR(fan2_exp, S_IRUGO|S_IWUSR,
+	show_fan_exp, set_fan_exp, 1);
+static SENSOR_DEVICE_ATTR(pwm1, S_IRUGO|S_IWUSR,
+	show_pwm, set_pwm, 0);
+static SENSOR_DEVICE_ATTR(pwm1_enable, S_IRUGO|S_IWUSR,
+	show_pwm_enable, set_pwm_enable, 0);
+static SENSOR_DEVICE_ATTR(pwm2, S_IRUGO | S_IWUSR,
+	show_pwm, set_pwm, 1);
+static SENSOR_DEVICE_ATTR(pwm2_enable, S_IRUGO|S_IWUSR,
+	show_pwm_enable, set_pwm_enable, 1);
+
+static struct attribute *f75375_attributes[] = {
+	&sensor_dev_attr_temp1_input.dev_attr.attr,
+	&sensor_dev_attr_temp1_max.dev_attr.attr,
+	&sensor_dev_attr_temp1_max_hyst.dev_attr.attr,
+	&sensor_dev_attr_temp2_input.dev_attr.attr,
+	&sensor_dev_attr_temp2_max.dev_attr.attr,
+	&sensor_dev_attr_temp2_max_hyst.dev_attr.attr,
+	&sensor_dev_attr_fan1_input.dev_attr.attr,
+	&sensor_dev_attr_fan1_max.dev_attr.attr,
+	&sensor_dev_attr_fan1_min.dev_attr.attr,
+	&sensor_dev_attr_fan1_exp.dev_attr.attr,
+	&sensor_dev_attr_fan2_input.dev_attr.attr,
+	&sensor_dev_attr_fan2_max.dev_attr.attr,
+	&sensor_dev_attr_fan2_min.dev_attr.attr,
+	&sensor_dev_attr_fan2_exp.dev_attr.attr,
+	&sensor_dev_attr_pwm1.dev_attr.attr,
+	&sensor_dev_attr_pwm1_enable.dev_attr.attr,
+	&sensor_dev_attr_pwm2.dev_attr.attr,
+	&sensor_dev_attr_pwm2_enable.dev_attr.attr,
+	&sensor_dev_attr_in0_input.dev_attr.attr,
+	&sensor_dev_attr_in0_max.dev_attr.attr,
+	&sensor_dev_attr_in0_min.dev_attr.attr,
+	&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_in2_input.dev_attr.attr,
+	&sensor_dev_attr_in2_max.dev_attr.attr,
+	&sensor_dev_attr_in2_min.dev_attr.attr,
+	&sensor_dev_attr_in3_input.dev_attr.attr,
+	&sensor_dev_attr_in3_max.dev_attr.attr,
+	&sensor_dev_attr_in3_min.dev_attr.attr,
+	NULL
+};
+
+static const struct attribute_group f75375_group +{
+	.attrs = f75375_attributes,
+};
+
+static int f75375_detach_client(struct i2c_client *client)
+{
+	struct f75375_data *data = i2c_get_clientdata(client);
+	int err;
+
+	hwmon_device_unregister(data->class_dev);
+
+	err = i2c_detach_client(client);
+	if (err) {
+		dev_err(&client->dev,
+			"Client deregistration failed, "
+			"client not detached.\n");
+		return err;
+	}
+	kfree(data);
+	return 0;
+}
+
+static int f75375_attach_adapter(struct i2c_adapter *adapter)
+{
+	return i2c_probe(adapter, &addr_data, f75375_detect);
+}
+
+
+/* This function is called by i2c_probe */
+static int f75375_detect(struct i2c_adapter *adapter, int address, int kind)
+{
+	struct i2c_client *new_client;
+	struct f75375_data *data;
+	u8 version=0;
+	int err = 0;
+	char *name = "";
+
+	if (!(data = kzalloc(sizeof(struct f75375_data), GFP_KERNEL))) {
+		err = -ENOMEM;
+		goto exit;
+	}
+	new_client = &data->client;
+	i2c_set_clientdata(new_client, data);
+	new_client->addr = address;
+	new_client->adapter = adapter;
+	new_client->driver = &f75375_driver;
+	new_client->flags = 0;
+
+	if (kind < 0) {
+		u16 vendid = f75375_read16(new_client, F75375_REG_VENDOR);
+		u16 chipid = f75375_read16(new_client, F75375_CHIP_ID);
+		version = f75375_read8(new_client, F75375_REG_VERSION);
+		if (chipid = 0x0306 && vendid = 0x1934) {
+			name = "F75375";
+			data->kind÷5375;
+		} else if (chipid = 0x0204 && vendid = 0x1934) {
+			name = "F75373";
+			data->kind÷5373;
+		} else {
+			dev_err(&adapter->dev,
+				"failed,%02X,%02X,%02X\n",
+				chipid, version, vendid);
+			goto exit_free;
+		}
+	}
+	dev_info(&adapter->dev,"found %s version: %02X\n",name,version);
+	strlcpy(new_client->name, name, I2C_NAME_SIZE);
+	data->valid = 0;
+	mutex_init(&data->update_lock);
+	if ((err = i2c_attach_client(new_client)))
+		goto exit_free;
+
+	if ((err = sysfs_create_group(&new_client->dev.kobj, &f75375_group)))
+		goto exit_detach;
+
+	data->class_dev = hwmon_device_register(&new_client->dev);
+	if (IS_ERR(data->class_dev)) {
+		err = PTR_ERR(data->class_dev);
+		goto exit_remove;
+	}
+
+	return 0;
+
+exit_remove:
+	sysfs_remove_group(&new_client->dev.kobj, &f75375_group);
+exit_detach:
+	i2c_detach_client(new_client);
+exit_free:
+	kfree(data);
+exit:
+	return err;
+}
+
+static int __init sensors_f75375_init(void)
+{
+	return i2c_add_driver(&f75375_driver);
+}
+
+static void __exit sensors_f75375_exit(void)
+{
+	i2c_del_driver(&f75375_driver);
+}
+
+MODULE_AUTHOR("Riku Voipio <riku.voipio at iki.fi> ");
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("F75373/F75375 hardware monitoring driver");
+
+module_init(sensors_f75375_init);
+module_exit(sensors_f75375_exit);
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