[PATCH 2.6] I2C: New PC8736x chip driver

Jean Delvare khali at linux-fr.org
Fri Oct 29 22:47:31 CEST 2004


Hi Greg,

This is my port of the pc87360 driver. It supports the hardware
monitoring functions of the National Semiconductor PC8736x Super-I/O
family. The PC87360, PC87363 and PC87364 only do fan monitoring and
control. The PC87365 and PC87366 additionally have voltage and
temperature monitoring.

The driver was ported upon request from Wincor-Nixdorf, and tested by
Rolf Müller there. I wish to thank Rolf for his very efficient
cooperation.

Please apply,
thanks.

Signed-off-by: Jean Delvare <khali at linux-fr.org>

diff -ruN linux-2.6.10-rc1/drivers/i2c/chips.orig/Kconfig linux-2.6.10-rc1/drivers/i2c/chips/Kconfig
--- linux-2.6.10-rc1/drivers/i2c/chips.orig/Kconfig	2004-10-27 19:00:50.000000000 +0200
+++ linux-2.6.10-rc1/drivers/i2c/chips/Kconfig	2004-10-29 22:36:03.000000000 +0200
@@ -215,6 +215,21 @@
 	  This driver can also be built as a module.  If so, the module
 	  will be called max1619.
 
+config SENSORS_PC87360
+	tristate "National Semiconductor PC87360 family"
+	depends on I2C && EXPERIMENTAL
+	select I2C_SENSOR
+	select I2C_ISA
+	help
+	  If you say yes here you get access to the hardware monitoring
+	  functions of the National Semiconductor PC8736x Super-I/O chips.
+	  The PC87360, PC87363 and PC87364 only have fan monitoring and
+	  control.  The PC87365 and PC87366 additionally have voltage and
+	  temperature monitoring.
+
+	  This driver can also be built as a module.  If so, the module
+	  will be called pc87360.
+
 config SENSORS_SMSC47M1
 	tristate "SMSC LPC47M10x and compatibles"
 	depends on I2C && EXPERIMENTAL
diff -ruN linux-2.6.10-rc1/drivers/i2c/chips.orig/Makefile linux-2.6.10-rc1/drivers/i2c/chips/Makefile
--- linux-2.6.10-rc1/drivers/i2c/chips.orig/Makefile	2004-10-27 19:00:50.000000000 +0200
+++ linux-2.6.10-rc1/drivers/i2c/chips/Makefile	2004-10-29 22:34:48.000000000 +0200
@@ -25,6 +25,7 @@
 obj-$(CONFIG_SENSORS_LM87)	+= lm87.o
 obj-$(CONFIG_SENSORS_LM90)	+= lm90.o
 obj-$(CONFIG_SENSORS_MAX1619)	+= max1619.o
+obj-$(CONFIG_SENSORS_PC87360)	+= pc87360.o
 obj-$(CONFIG_SENSORS_PCF8574)	+= pcf8574.o
 obj-$(CONFIG_SENSORS_PCF8591)	+= pcf8591.o
 obj-$(CONFIG_SENSORS_RTC8564)	+= rtc8564.o
diff -ruN linux-2.6.10-rc1/drivers/i2c/chips.orig/pc87360.c linux-2.6.10-rc1/drivers/i2c/chips/pc87360.c
--- linux-2.6.10-rc1/drivers/i2c/chips.orig/pc87360.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-2.6.10-rc1/drivers/i2c/chips/pc87360.c	2004-10-29 22:34:48.000000000 +0200
@@ -0,0 +1,1306 @@
+/*
+ *  pc87360.c - Part of lm_sensors, Linux kernel modules
+ *              for hardware monitoring
+ *  Copyright (C) 2004 Jean Delvare <khali at linux-fr.org>
+ *
+ *  Copied from smsc47m1.c:
+ *  Copyright (C) 2002 Mark D. Studebaker <mdsxyz123 at yahoo.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., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ *  Supports the following chips:
+ *
+ *  Chip        #vin    #fan    #pwm    #temp   devid
+ *  PC87360     -       2       2       -       0xE1
+ *  PC87363     -       2       2       -       0xE8
+ *  PC87364     -       3       3       -       0xE4
+ *  PC87365     11      3       3       2       0xE5
+ *  PC87366     11      3       3       3-4     0xE9
+ *
+ *  This driver assumes that no more than one chip is present, and one of
+ *  the standard Super-I/O addresses is used (0x2E/0x2F or 0x4E/0x4F).
+ */
+
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/i2c.h>
+#include <linux/i2c-sensor.h>
+#include <linux/i2c-vid.h>
+#include <asm/io.h>
+
+static unsigned short normal_i2c[] = { I2C_CLIENT_END };
+static unsigned short normal_i2c_range[] = { I2C_CLIENT_END };
+static unsigned int normal_isa[] = { 0, I2C_CLIENT_ISA_END };
+static unsigned int normal_isa_range[] = { I2C_CLIENT_ISA_END };
+static struct i2c_force_data forces[] = {{ NULL }};
+static u8 devid;
+static unsigned int extra_isa[3];
+static u8 confreg[4];
+
+enum chips { any_chip, pc87360, pc87363, pc87364, pc87365, pc87366 };
+static struct i2c_address_data addr_data = {
+	.normal_i2c		= normal_i2c,
+	.normal_i2c_range	= normal_i2c_range,
+	.normal_isa		= normal_isa,
+	.normal_isa_range	= normal_isa_range,
+	.probe			= normal_i2c,		/* cheat */
+	.probe_range		= normal_i2c_range,	/* cheat */
+	.ignore			= normal_i2c,		/* cheat */
+	.ignore_range		= normal_i2c_range,	/* cheat */
+	.forces			= forces,
+};
+
+static int init = 1;
+MODULE_PARM(init, "i");
+MODULE_PARM_DESC(init,
+ "Chip initialization level:\n"
+ " 0: None\n"
+ "*1: Forcibly enable internal voltage and temperature channels, except in9\n"
+ " 2: Forcibly enable all voltage and temperature channels, except in9\n"
+ " 3: Forcibly enable all voltage and temperature channels, including in9");
+
+/*
+ * Super-I/O registers and operations
+ */
+
+#define DEV	0x07	/* Register: Logical device select */
+#define DEVID	0x20	/* Register: Device ID */
+#define ACT	0x30	/* Register: Device activation */
+#define BASE	0x60	/* Register: Base address */
+
+#define FSCM	0x09	/* Logical device: fans */
+#define VLM	0x0d	/* Logical device: voltages */
+#define TMS	0x0e	/* Logical device: temperatures */
+static const u8 logdev[3] = { FSCM, VLM, TMS };
+
+#define LD_FAN		0
+#define LD_IN		1
+#define LD_TEMP		2
+
+static inline void superio_outb(int sioaddr, int reg, int val)
+{
+	outb(reg, sioaddr);
+	outb(val, sioaddr+1);
+}
+
+static inline int superio_inb(int sioaddr, int reg)
+{
+	outb(reg, sioaddr);
+	return inb(sioaddr+1);
+}
+
+static inline void superio_exit(int sioaddr)
+{
+	outb(0x02, sioaddr);
+	outb(0x02, sioaddr+1);
+}
+
+/*
+ * Logical devices
+ */
+
+#define PC87360_EXTENT		0x10
+#define PC87365_REG_BANK	0x09
+#define NO_BANK			0xff
+
+/*
+ * Fan registers and conversions
+ */
+
+/* nr has to be 0 or 1 (PC87360/87363) or 2 (PC87364/87365/87366) */
+#define PC87360_REG_PRESCALE(nr)	(0x00 + 2 * (nr))
+#define PC87360_REG_PWM(nr)		(0x01 + 2 * (nr))
+#define PC87360_REG_FAN_MIN(nr)		(0x06 + 3 * (nr))
+#define PC87360_REG_FAN(nr)		(0x07 + 3 * (nr))
+#define PC87360_REG_FAN_STATUS(nr)	(0x08 + 3 * (nr))
+
+#define FAN_FROM_REG(val,div)		((val) == 0 ? 0: \
+					 480000 / ((val)*(div)))
+#define FAN_TO_REG(val,div)		((val) <= 100 ? 0 : \
+					 480000 / ((val)*(div)))
+#define FAN_DIV_FROM_REG(val)		(1 << ((val >> 5) & 0x03))
+#define FAN_STATUS_FROM_REG(val)	((val) & 0x07)
+
+#define FAN_CONFIG_MONITOR(val,nr)	(((val) >> (2 + nr * 3)) & 1)
+#define FAN_CONFIG_CONTROL(val,nr)	(((val) >> (3 + nr * 3)) & 1)
+#define FAN_CONFIG_INVERT(val,nr)	(((val) >> (4 + nr * 3)) & 1)
+
+#define PWM_FROM_REG(val,inv)		((inv) ? 255 - (val) : (val))
+static inline u8 PWM_TO_REG(int val, int inv)
+{
+	if (inv)
+		val = 255 - val;
+	if (val < 0)
+		return 0;
+	if (val > 255)
+		return 255;
+	return val;
+}
+
+/*
+ * Voltage registers and conversions
+ */
+
+#define PC87365_REG_IN_CONVRATE		0x07
+#define PC87365_REG_IN_CONFIG		0x08
+#define PC87365_REG_IN			0x0B
+#define PC87365_REG_IN_MIN		0x0D
+#define PC87365_REG_IN_MAX		0x0C
+#define PC87365_REG_IN_STATUS		0x0A
+#define PC87365_REG_IN_ALARMS1		0x00
+#define PC87365_REG_IN_ALARMS2		0x01
+#define PC87365_REG_VID			0x06
+
+#define IN_FROM_REG(val,ref)		(((val) * (ref) + 128) / 256)
+#define IN_TO_REG(val,ref)		((val) < 0 ? 0 : \
+					 (val)*256 >= (ref)*255 ? 255: \
+					 ((val) * 256 + (ref)/2) / (ref))
+
+/*
+ * Temperature registers and conversions
+ */
+
+#define PC87365_REG_TEMP_CONFIG		0x08
+#define PC87365_REG_TEMP		0x0B
+#define PC87365_REG_TEMP_MIN		0x0D
+#define PC87365_REG_TEMP_MAX		0x0C
+#define PC87365_REG_TEMP_CRIT		0x0E
+#define PC87365_REG_TEMP_STATUS		0x0A
+#define PC87365_REG_TEMP_ALARMS		0x00
+
+#define TEMP_FROM_REG(val)		((val) * 1000)
+#define TEMP_TO_REG(val)		((val) < -55000 ? -55 : \
+					 (val) > 127000 ? 127 : \
+					 (val) < 0 ? ((val) - 500) / 1000 : \
+					 ((val) + 500) / 1000)
+
+/*
+ * Client data (each client gets its own)
+ */
+
+struct pc87360_data {
+	struct i2c_client client;
+	struct semaphore lock;
+	struct semaphore update_lock;
+	char valid;		/* !=0 if following fields are valid */
+	unsigned long last_updated;	/* In jiffies */
+
+	int address[3];
+
+	u8 fannr, innr, tempnr;
+
+	u8 fan[3];		/* Register value */
+	u8 fan_min[3];		/* Register value */
+	u8 fan_status[3];	/* Register value */
+	u8 pwm[3];		/* Register value */
+	u16 fan_conf;		/* Configuration register values, combined */
+
+	u16 in_vref;		/* 1 mV/bit */
+	u8 in[14];		/* Register value */
+	u8 in_min[14];		/* Register value */
+	u8 in_max[14];		/* Register value */
+	u8 in_crit[3];		/* Register value */
+	u8 in_status[14];	/* Register value */
+	u16 in_alarms;		/* Register values, combined, masked */
+	u8 vid_conf;		/* Configuration register value */
+	u8 vrm;
+	u8 vid;			/* Register value */
+
+	s8 temp[3];		/* Register value */
+	s8 temp_min[3];		/* Register value */
+	s8 temp_max[3];		/* Register value */
+	s8 temp_crit[3];	/* Register value */
+	u8 temp_status[3];	/* Register value */
+	u8 temp_alarms;		/* Register value, masked */
+};
+
+/*
+ * Functions declaration
+ */
+
+static int pc87360_attach_adapter(struct i2c_adapter *adapter);
+static int pc87360_detect(struct i2c_adapter *adapter, int address, int kind);
+static int pc87360_detach_client(struct i2c_client *client);
+
+static int pc87360_read_value(struct pc87360_data *data, u8 ldi, u8 bank,
+			      u8 reg);
+static void pc87360_write_value(struct pc87360_data *data, u8 ldi, u8 bank,
+				u8 reg, u8 value);
+static void pc87360_init_client(struct i2c_client *client, int use_thermistors);
+static struct pc87360_data *pc87360_update_device(struct device *dev);
+
+/*
+ * Driver data (common to all clients)
+ */
+
+static struct i2c_driver pc87360_driver = {
+	.owner		= THIS_MODULE,
+	.name		= "pc87360",
+	.flags		= I2C_DF_NOTIFY,
+	.attach_adapter	= pc87360_attach_adapter,
+	.detach_client	= pc87360_detach_client,
+};
+
+/*
+ * Sysfs stuff
+ */
+
+static ssize_t set_fan_min(struct device *dev, const char *buf,
+	size_t count, int nr)
+{
+	struct i2c_client *client = to_i2c_client(dev);
+	struct pc87360_data *data = i2c_get_clientdata(client);
+	long fan_min = simple_strtol(buf, NULL, 10);
+
+	fan_min = FAN_TO_REG(fan_min, FAN_DIV_FROM_REG(data->fan_status[nr]));
+
+	/* If it wouldn't fit, change clock divisor */
+	while (fan_min > 255
+	    && (data->fan_status[nr] & 0x60) != 0x60) {
+		fan_min >>= 1;
+		data->fan[nr] >>= 1;
+		data->fan_status[nr] += 0x20;
+	}
+	data->fan_min[nr] = fan_min > 255 ? 255 : fan_min;
+	pc87360_write_value(data, LD_FAN, NO_BANK, PC87360_REG_FAN_MIN(nr),
+			    data->fan_min[nr]);
+
+	/* Write new divider, preserve alarm bits */
+	pc87360_write_value(data, LD_FAN, NO_BANK, PC87360_REG_FAN_STATUS(nr),
+			    data->fan_status[nr] & 0xF9);
+
+	return count;
+}
+
+#define show_and_set_fan(offset) \
+static ssize_t show_fan##offset##_input(struct device *dev, char *buf) \
+{ \
+	struct pc87360_data *data = pc87360_update_device(dev); \
+	return sprintf(buf, "%u\n", FAN_FROM_REG(data->fan[offset-1], \
+		       FAN_DIV_FROM_REG(data->fan_status[offset-1]))); \
+} \
+static ssize_t show_fan##offset##_min(struct device *dev, char *buf) \
+{ \
+	struct pc87360_data *data = pc87360_update_device(dev); \
+	return sprintf(buf, "%u\n", FAN_FROM_REG(data->fan_min[offset-1], \
+		       FAN_DIV_FROM_REG(data->fan_status[offset-1]))); \
+} \
+static ssize_t show_fan##offset##_div(struct device *dev, char *buf) \
+{ \
+	struct pc87360_data *data = pc87360_update_device(dev); \
+	return sprintf(buf, "%u\n", \
+		       FAN_DIV_FROM_REG(data->fan_status[offset-1])); \
+} \
+static ssize_t show_fan##offset##_status(struct device *dev, char *buf) \
+{ \
+	struct pc87360_data *data = pc87360_update_device(dev); \
+	return sprintf(buf, "%u\n", \
+		       FAN_STATUS_FROM_REG(data->fan_status[offset-1])); \
+} \
+static ssize_t set_fan##offset##_min(struct device *dev, const char *buf, \
+	size_t count) \
+{ \
+	return set_fan_min(dev, buf, count, offset-1); \
+} \
+static DEVICE_ATTR(fan##offset##_input, S_IRUGO, \
+	show_fan##offset##_input, NULL); \
+static DEVICE_ATTR(fan##offset##_min, S_IWUSR | S_IRUGO, \
+	show_fan##offset##_min, set_fan##offset##_min); \
+static DEVICE_ATTR(fan##offset##_div, S_IRUGO, \
+	show_fan##offset##_div, NULL); \
+static DEVICE_ATTR(fan##offset##_status, S_IRUGO, \
+	show_fan##offset##_status, NULL);
+show_and_set_fan(1)
+show_and_set_fan(2)
+show_and_set_fan(3)
+
+#define show_and_set_pwm(offset) \
+static ssize_t show_pwm##offset(struct device *dev, char *buf) \
+{ \
+	struct pc87360_data *data = pc87360_update_device(dev); \
+	return sprintf(buf, "%u\n", \
+		       PWM_FROM_REG(data->pwm[offset-1], \
+				    FAN_CONFIG_INVERT(data->fan_conf, \
+						      offset-1))); \
+} \
+static ssize_t set_pwm##offset(struct device *dev, const char *buf, \
+	size_t count) \
+{ \
+	struct i2c_client *client = to_i2c_client(dev); \
+	struct pc87360_data *data = i2c_get_clientdata(client); \
+	long val = simple_strtol(buf, NULL, 10); \
+	data->pwm[offset-1] = PWM_TO_REG(val, \
+			      FAN_CONFIG_INVERT(data->fan_conf, offset-1)); \
+	pc87360_write_value(data, LD_FAN, NO_BANK, PC87360_REG_PWM(offset-1), \
+			    data->pwm[offset-1]); \
+	return count; \
+} \
+static DEVICE_ATTR(pwm##offset, S_IWUSR | S_IRUGO, \
+	show_pwm##offset, set_pwm##offset);
+show_and_set_pwm(1)
+show_and_set_pwm(2)
+show_and_set_pwm(3)
+
+#define show_and_set_in(offset) \
+static ssize_t show_in##offset##_input(struct device *dev, char *buf) \
+{ \
+	struct pc87360_data *data = pc87360_update_device(dev); \
+	return sprintf(buf, "%u\n", IN_FROM_REG(data->in[offset], \
+		       data->in_vref)); \
+} \
+static ssize_t show_in##offset##_min(struct device *dev, char *buf) \
+{ \
+	struct pc87360_data *data = pc87360_update_device(dev); \
+	return sprintf(buf, "%u\n", IN_FROM_REG(data->in_min[offset], \
+		       data->in_vref)); \
+} \
+static ssize_t show_in##offset##_max(struct device *dev, char *buf) \
+{ \
+	struct pc87360_data *data = pc87360_update_device(dev); \
+	return sprintf(buf, "%u\n", IN_FROM_REG(data->in_max[offset], \
+		       data->in_vref)); \
+} \
+static ssize_t show_in##offset##_status(struct device *dev, char *buf) \
+{ \
+	struct pc87360_data *data = pc87360_update_device(dev); \
+	return sprintf(buf, "%u\n", data->in_status[offset]); \
+} \
+static ssize_t set_in##offset##_min(struct device *dev, const char *buf, \
+	size_t count) \
+{ \
+	struct i2c_client *client = to_i2c_client(dev); \
+	struct pc87360_data *data = i2c_get_clientdata(client); \
+	long val = simple_strtol(buf, NULL, 10); \
+	data->in_min[offset] = IN_TO_REG(val, data->in_vref); \
+	pc87360_write_value(data, LD_IN, offset, PC87365_REG_IN_MIN, \
+			    data->in_min[offset]); \
+	return count; \
+} \
+static ssize_t set_in##offset##_max(struct device *dev, const char *buf, \
+	size_t count) \
+{ \
+	struct i2c_client *client = to_i2c_client(dev); \
+	struct pc87360_data *data = i2c_get_clientdata(client); \
+	long val = simple_strtol(buf, NULL, 10); \
+	data->in_max[offset] = IN_TO_REG(val, \
+			       data->in_vref); \
+	pc87360_write_value(data, LD_IN, offset, PC87365_REG_IN_MAX, \
+			    data->in_max[offset]); \
+	return count; \
+} \
+static DEVICE_ATTR(in##offset##_input, S_IRUGO, \
+	show_in##offset##_input, NULL); \
+static DEVICE_ATTR(in##offset##_min, S_IWUSR | S_IRUGO, \
+	show_in##offset##_min, set_in##offset##_min); \
+static DEVICE_ATTR(in##offset##_max, S_IWUSR | S_IRUGO, \
+	show_in##offset##_max, set_in##offset##_max); \
+static DEVICE_ATTR(in##offset##_status, S_IRUGO, \
+	show_in##offset##_status, NULL);
+show_and_set_in(0)
+show_and_set_in(1)
+show_and_set_in(2)
+show_and_set_in(3)
+show_and_set_in(4)
+show_and_set_in(5)
+show_and_set_in(6)
+show_and_set_in(7)
+show_and_set_in(8)
+show_and_set_in(9)
+show_and_set_in(10)
+
+#define show_and_set_therm(offset) \
+static ssize_t show_temp##offset##_input(struct device *dev, char *buf) \
+{ \
+	struct pc87360_data *data = pc87360_update_device(dev); \
+	return sprintf(buf, "%u\n", IN_FROM_REG(data->in[offset+7], \
+		       data->in_vref)); \
+} \
+static ssize_t show_temp##offset##_min(struct device *dev, char *buf) \
+{ \
+	struct pc87360_data *data = pc87360_update_device(dev); \
+	return sprintf(buf, "%u\n", IN_FROM_REG(data->in_min[offset+7], \
+		       data->in_vref)); \
+} \
+static ssize_t show_temp##offset##_max(struct device *dev, char *buf) \
+{ \
+	struct pc87360_data *data = pc87360_update_device(dev); \
+	return sprintf(buf, "%u\n", IN_FROM_REG(data->in_max[offset+7], \
+		       data->in_vref)); \
+} \
+static ssize_t show_temp##offset##_crit(struct device *dev, char *buf) \
+{ \
+	struct pc87360_data *data = pc87360_update_device(dev); \
+	return sprintf(buf, "%u\n", IN_FROM_REG(data->in_crit[offset-4], \
+		       data->in_vref)); \
+} \
+static ssize_t show_temp##offset##_status(struct device *dev, char *buf) \
+{ \
+	struct pc87360_data *data = pc87360_update_device(dev); \
+	return sprintf(buf, "%u\n", data->in_status[offset+7]); \
+} \
+static ssize_t set_temp##offset##_min(struct device *dev, const char *buf, \
+	size_t count) \
+{ \
+	struct i2c_client *client = to_i2c_client(dev); \
+	struct pc87360_data *data = i2c_get_clientdata(client); \
+	long val = simple_strtol(buf, NULL, 10); \
+	data->in_min[offset+7] = IN_TO_REG(val, data->in_vref); \
+	pc87360_write_value(data, LD_IN, offset+7, PC87365_REG_TEMP_MIN, \
+			    data->in_min[offset+7]); \
+	return count; \
+} \
+static ssize_t set_temp##offset##_max(struct device *dev, const char *buf, \
+	size_t count) \
+{ \
+	struct i2c_client *client = to_i2c_client(dev); \
+	struct pc87360_data *data = i2c_get_clientdata(client); \
+	long val = simple_strtol(buf, NULL, 10); \
+	data->in_max[offset+7] = IN_TO_REG(val, data->in_vref); \
+	pc87360_write_value(data, LD_IN, offset+7, PC87365_REG_TEMP_MAX, \
+			    data->in_max[offset+7]); \
+	return count; \
+} \
+static ssize_t set_temp##offset##_crit(struct device *dev, const char *buf, \
+	size_t count) \
+{ \
+	struct i2c_client *client = to_i2c_client(dev); \
+	struct pc87360_data *data = i2c_get_clientdata(client); \
+	long val = simple_strtol(buf, NULL, 10); \
+	data->in_crit[offset-4] = IN_TO_REG(val, data->in_vref); \
+	pc87360_write_value(data, LD_IN, offset+7, PC87365_REG_TEMP_CRIT, \
+			    data->in_crit[offset-4]); \
+	return count; \
+} \
+static DEVICE_ATTR(temp##offset##_input, S_IRUGO, \
+	show_temp##offset##_input, NULL); \
+static DEVICE_ATTR(temp##offset##_min, S_IWUSR | S_IRUGO, \
+	show_temp##offset##_min, set_temp##offset##_min); \
+static DEVICE_ATTR(temp##offset##_max, S_IWUSR | S_IRUGO, \
+	show_temp##offset##_max, set_temp##offset##_max); \
+static DEVICE_ATTR(temp##offset##_crit, S_IWUSR | S_IRUGO, \
+	show_temp##offset##_crit, set_temp##offset##_crit); \
+static DEVICE_ATTR(temp##offset##_status, S_IRUGO, \
+	show_temp##offset##_status, NULL);
+show_and_set_therm(4)
+show_and_set_therm(5)
+show_and_set_therm(6)
+
+static ssize_t show_vid(struct device *dev, char *buf)
+{
+	struct pc87360_data *data = pc87360_update_device(dev);
+	return sprintf(buf, "%u\n", vid_from_reg(data->vid, data->vrm));
+}
+static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid, NULL);
+
+static ssize_t show_vrm(struct device *dev, char *buf)
+{
+	struct pc87360_data *data = pc87360_update_device(dev);
+	return sprintf(buf, "%u\n", data->vrm);
+}
+static ssize_t set_vrm(struct device *dev, const char *buf, size_t count)
+{
+	struct i2c_client *client = to_i2c_client(dev);
+	struct pc87360_data *data = i2c_get_clientdata(client);
+	data->vrm = simple_strtoul(buf, NULL, 10);
+	return count;
+}
+static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm, set_vrm);
+
+static ssize_t show_in_alarms(struct device *dev, char *buf)
+{
+	struct pc87360_data *data = pc87360_update_device(dev);
+	return sprintf(buf, "%u\n", data->in_alarms);
+}
+static DEVICE_ATTR(alarms_in, S_IRUGO, show_in_alarms, NULL);
+
+#define show_and_set_temp(offset) \
+static ssize_t show_temp##offset##_input(struct device *dev, char *buf) \
+{ \
+	struct pc87360_data *data = pc87360_update_device(dev); \
+	return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[offset-1])); \
+} \
+static ssize_t show_temp##offset##_min(struct device *dev, char *buf) \
+{ \
+	struct pc87360_data *data = pc87360_update_device(dev); \
+	return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_min[offset-1])); \
+} \
+static ssize_t show_temp##offset##_max(struct device *dev, char *buf) \
+{ \
+	struct pc87360_data *data = pc87360_update_device(dev); \
+	return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max[offset-1])); \
+}\
+static ssize_t show_temp##offset##_crit(struct device *dev, char *buf) \
+{ \
+	struct pc87360_data *data = pc87360_update_device(dev); \
+	return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_crit[offset-1])); \
+}\
+static ssize_t show_temp##offset##_status(struct device *dev, char *buf) \
+{ \
+	struct pc87360_data *data = pc87360_update_device(dev); \
+	return sprintf(buf, "%d\n", data->temp_status[offset-1]); \
+}\
+static ssize_t set_temp##offset##_min(struct device *dev, const char *buf, \
+	size_t count) \
+{ \
+	struct i2c_client *client = to_i2c_client(dev); \
+	struct pc87360_data *data = i2c_get_clientdata(client); \
+	long val = simple_strtol(buf, NULL, 10); \
+	data->temp_min[offset-1] = TEMP_TO_REG(val); \
+	pc87360_write_value(data, LD_TEMP, offset-1, PC87365_REG_TEMP_MIN, \
+			    data->temp_min[offset-1]); \
+	return count; \
+} \
+static ssize_t set_temp##offset##_max(struct device *dev, const char *buf, \
+	size_t count) \
+{ \
+	struct i2c_client *client = to_i2c_client(dev); \
+	struct pc87360_data *data = i2c_get_clientdata(client); \
+	long val = simple_strtol(buf, NULL, 10); \
+	data->temp_max[offset-1] = TEMP_TO_REG(val); \
+	pc87360_write_value(data, LD_TEMP, offset-1, PC87365_REG_TEMP_MAX, \
+			    data->temp_max[offset-1]); \
+	return count; \
+} \
+static ssize_t set_temp##offset##_crit(struct device *dev, const char *buf, \
+	size_t count) \
+{ \
+	struct i2c_client *client = to_i2c_client(dev); \
+	struct pc87360_data *data = i2c_get_clientdata(client); \
+	long val = simple_strtol(buf, NULL, 10); \
+	data->temp_crit[offset-1] = TEMP_TO_REG(val); \
+	pc87360_write_value(data, LD_TEMP, offset-1, PC87365_REG_TEMP_CRIT, \
+			    data->temp_crit[offset-1]); \
+	return count; \
+} \
+static DEVICE_ATTR(temp##offset##_input, S_IRUGO, \
+	show_temp##offset##_input, NULL); \
+static DEVICE_ATTR(temp##offset##_min, S_IWUSR | S_IRUGO, \
+	show_temp##offset##_min, set_temp##offset##_min); \
+static DEVICE_ATTR(temp##offset##_max, S_IWUSR | S_IRUGO, \
+	show_temp##offset##_max, set_temp##offset##_max); \
+static DEVICE_ATTR(temp##offset##_crit, S_IWUSR | S_IRUGO, \
+	show_temp##offset##_crit, set_temp##offset##_crit); \
+static DEVICE_ATTR(temp##offset##_status, S_IRUGO, \
+	show_temp##offset##_status, NULL);
+show_and_set_temp(1)
+show_and_set_temp(2)
+show_and_set_temp(3)
+
+static ssize_t show_temp_alarms(struct device *dev, char *buf)
+{
+	struct pc87360_data *data = pc87360_update_device(dev);
+	return sprintf(buf, "%u\n", data->temp_alarms);
+}
+static DEVICE_ATTR(alarms_temp, S_IRUGO, show_temp_alarms, NULL);
+
+/*
+ * Device detection, registration and update
+ */
+
+static int pc87360_attach_adapter(struct i2c_adapter *adapter)
+{
+	return i2c_detect(adapter, &addr_data, pc87360_detect);
+}
+
+static int pc87360_find(int sioaddr, u8 *devid, int *address)
+{
+	u16 val;
+	int i;
+	int nrdev; /* logical device count */
+
+	/* No superio_enter */
+
+	/* Identify device */
+	val = superio_inb(sioaddr, DEVID);
+	switch (val) {
+	case 0xE1: /* PC87360 */
+	case 0xE8: /* PC87363 */
+	case 0xE4: /* PC87364 */
+		nrdev = 1;
+		break;
+	case 0xE5: /* PC87365 */
+	case 0xE9: /* PC87366 */
+		nrdev = 3;
+		break;
+	default:
+		superio_exit(sioaddr);
+		return -ENODEV;
+	}
+	/* Remember the device id */
+	*devid = val;
+
+	for (i = 0; i < nrdev; i++) {
+		/* select logical device */
+		superio_outb(sioaddr, DEV, logdev[i]);
+
+		val = superio_inb(sioaddr, ACT);
+		if (!(val & 0x01)) {
+			printk(KERN_INFO "pc87360: Device 0x%02x not "
+			       "activated\n", logdev[i]);
+			continue;
+		}
+
+		val = (superio_inb(sioaddr, BASE) << 8)
+		    | superio_inb(sioaddr, BASE + 1);
+		if (!val) {
+			printk(KERN_INFO "pc87360: Base address not set for "
+			       "device 0x%02x\n", logdev[i]);
+			continue;
+		}
+
+		address[i] = val;
+
+		if (i==0) { /* Fans */
+			confreg[0] = superio_inb(sioaddr, 0xF0);
+			confreg[1] = superio_inb(sioaddr, 0xF1);
+
+#ifdef DEBUG
+			printk(KERN_DEBUG "pc87360: Fan 1: mon=%d "
+			       "ctrl=%d inv=%d\n", (confreg[0]>>2)&1,
+			       (confreg[0]>>3)&1, (confreg[0]>>4)&1);
+			printk(KERN_DEBUG "pc87360: Fan 2: mon=%d "
+			       "ctrl=%d inv=%d\n", (confreg[0]>>5)&1,
+			       (confreg[0]>>6)&1, (confreg[0]>>7)&1);
+			printk(KERN_DEBUG "pc87360: Fan 3: mon=%d "
+			       "ctrl=%d inv=%d\n", confreg[1]&1,
+			       (confreg[1]>>1)&1, (confreg[1]>>2)&1);
+#endif
+		} else if (i==1) { /* Voltages */
+			/* Are we using thermistors? */
+			if (*devid == 0xE9) { /* PC87366 */
+				/* These registers are not logical-device
+				   specific, just that we won't need them if
+				   we don't use the VLM device */
+				confreg[2] = superio_inb(sioaddr, 0x2B);
+				confreg[3] = superio_inb(sioaddr, 0x25);
+
+				if (confreg[2] & 0x40) {
+					printk(KERN_INFO "pc87360: Using "
+					       "thermistors for temperature "
+					       "monitoring\n");
+				}
+				if (confreg[3] & 0xE0) {
+					printk(KERN_INFO "pc87360: VID "
+					       "inputs routed (mode %u)\n",
+					       confreg[3] >> 5);
+				}
+			}
+		}
+	}
+
+	superio_exit(sioaddr);
+	return 0;
+}
+
+/* We don't really care about the address.
+   Read from extra_isa instead. */
+int pc87360_detect(struct i2c_adapter *adapter, int address, int kind)
+{
+	int i;
+	struct i2c_client *new_client;
+	struct pc87360_data *data;
+	int err = 0;
+	const char *name = "pc87360";
+	int use_thermistors = 0;
+
+	if (!i2c_is_isa_adapter(adapter))
+		return -ENODEV;
+
+	if (!(data = kmalloc(sizeof(struct pc87360_data), GFP_KERNEL)))
+		return -ENOMEM;
+	memset(data, 0x00, sizeof(struct pc87360_data));
+
+	new_client = &data->client;
+	i2c_set_clientdata(new_client, data);
+	new_client->addr = address;
+	init_MUTEX(&data->lock);
+	new_client->adapter = adapter;
+	new_client->driver = &pc87360_driver;
+	new_client->flags = 0;
+
+	data->fannr = 2;
+	data->innr = 0;
+	data->tempnr = 0;
+
+	switch (devid) {
+	case 0xe8:
+		name = "pc87363";
+		break;
+	case 0xe4:
+		name = "pc87364";
+		data->fannr = 3;
+		break;
+	case 0xe5:
+		name = "pc87365";
+		data->fannr = extra_isa[0] ? 3 : 0;
+		data->innr = extra_isa[1] ? 11 : 0;
+		data->tempnr = extra_isa[2] ? 2 : 0;
+		break;
+	case 0xe9:
+		name = "pc87366";
+		data->fannr = extra_isa[0] ? 3 : 0;
+		data->innr = extra_isa[1] ? 14 : 0;
+		data->tempnr = extra_isa[2] ? 3 : 0;
+		break;
+	}
+
+	strcpy(new_client->name, name);
+	data->valid = 0;
+	init_MUTEX(&data->update_lock);
+
+	for (i = 0; i < 3; i++) {
+		if (((data->address[i] = extra_isa[i]))
+		 && !request_region(extra_isa[i], PC87360_EXTENT, "pc87360")) {
+			dev_err(&new_client->dev, "Region 0x%x-0x%x already "
+				"in use!\n", extra_isa[i],
+				extra_isa[i]+PC87360_EXTENT-1);
+			for (i--; i >= 0; i--)
+				release_region(extra_isa[i], PC87360_EXTENT);
+			err = -EBUSY;
+			goto ERROR1;
+		}
+	}
+
+	/* Retrieve the fans configuration from Super-I/O space */
+	if (data->fannr)
+		data->fan_conf = confreg[0] | (confreg[1] << 8);
+
+	if ((err = i2c_attach_client(new_client)))
+		goto ERROR2;
+
+	/* Use the correct reference voltage
+	   Unless both the VLM and the TMS logical devices agree to
+	   use an external Vref, the internal one is used. */
+	if (data->innr) {
+		i = pc87360_read_value(data, LD_IN, NO_BANK,
+				       PC87365_REG_IN_CONFIG);
+		if (data->tempnr) {
+			i &= pc87360_read_value(data, LD_TEMP, NO_BANK,
+						PC87365_REG_TEMP_CONFIG);
+		}
+		data->in_vref = (i&0x02) ? 3025 : 2966;
+		dev_dbg(&new_client->dev, "Using %s reference voltage\n",
+			(i&0x02) ? "external" : "internal");
+
+		data->vid_conf = confreg[3];
+		data->vrm = 90;
+	}
+
+	/* Fan clock dividers may be needed before any data is read */
+	for (i = 0; i < data->fannr; i++) {
+		data->fan_status[i] = pc87360_read_value(data, LD_FAN,
+				      NO_BANK, PC87360_REG_FAN_STATUS(i));
+	}
+
+	if (init > 0) {
+		if (devid == 0xe9 && data->address[1]) /* PC87366 */
+			use_thermistors = confreg[2] & 0x40;
+
+		pc87360_init_client(new_client, use_thermistors);
+	}
+
+	/* Register sysfs hooks */
+	if (data->innr) {
+		device_create_file(&new_client->dev, &dev_attr_in0_input);
+		device_create_file(&new_client->dev, &dev_attr_in1_input);
+		device_create_file(&new_client->dev, &dev_attr_in2_input);
+		device_create_file(&new_client->dev, &dev_attr_in3_input);
+		device_create_file(&new_client->dev, &dev_attr_in4_input);
+		device_create_file(&new_client->dev, &dev_attr_in5_input);
+		device_create_file(&new_client->dev, &dev_attr_in6_input);
+		device_create_file(&new_client->dev, &dev_attr_in7_input);
+		device_create_file(&new_client->dev, &dev_attr_in8_input);
+		device_create_file(&new_client->dev, &dev_attr_in9_input);
+		device_create_file(&new_client->dev, &dev_attr_in10_input);
+		device_create_file(&new_client->dev, &dev_attr_in0_min);
+		device_create_file(&new_client->dev, &dev_attr_in1_min);
+		device_create_file(&new_client->dev, &dev_attr_in2_min);
+		device_create_file(&new_client->dev, &dev_attr_in3_min);
+		device_create_file(&new_client->dev, &dev_attr_in4_min);
+		device_create_file(&new_client->dev, &dev_attr_in5_min);
+		device_create_file(&new_client->dev, &dev_attr_in6_min);
+		device_create_file(&new_client->dev, &dev_attr_in7_min);
+		device_create_file(&new_client->dev, &dev_attr_in8_min);
+		device_create_file(&new_client->dev, &dev_attr_in9_min);
+		device_create_file(&new_client->dev, &dev_attr_in10_min);
+		device_create_file(&new_client->dev, &dev_attr_in0_max);
+		device_create_file(&new_client->dev, &dev_attr_in1_max);
+		device_create_file(&new_client->dev, &dev_attr_in2_max);
+		device_create_file(&new_client->dev, &dev_attr_in3_max);
+		device_create_file(&new_client->dev, &dev_attr_in4_max);
+		device_create_file(&new_client->dev, &dev_attr_in5_max);
+		device_create_file(&new_client->dev, &dev_attr_in6_max);
+		device_create_file(&new_client->dev, &dev_attr_in7_max);
+		device_create_file(&new_client->dev, &dev_attr_in8_max);
+		device_create_file(&new_client->dev, &dev_attr_in9_max);
+		device_create_file(&new_client->dev, &dev_attr_in10_max);
+		device_create_file(&new_client->dev, &dev_attr_in0_status);
+		device_create_file(&new_client->dev, &dev_attr_in1_status);
+		device_create_file(&new_client->dev, &dev_attr_in2_status);
+		device_create_file(&new_client->dev, &dev_attr_in3_status);
+		device_create_file(&new_client->dev, &dev_attr_in4_status);
+		device_create_file(&new_client->dev, &dev_attr_in5_status);
+		device_create_file(&new_client->dev, &dev_attr_in6_status);
+		device_create_file(&new_client->dev, &dev_attr_in7_status);
+		device_create_file(&new_client->dev, &dev_attr_in8_status);
+		device_create_file(&new_client->dev, &dev_attr_in9_status);
+		device_create_file(&new_client->dev, &dev_attr_in10_status);
+
+		device_create_file(&new_client->dev, &dev_attr_cpu0_vid);
+		device_create_file(&new_client->dev, &dev_attr_vrm);
+		device_create_file(&new_client->dev, &dev_attr_alarms_in);
+	}
+
+	if (data->tempnr) {
+		device_create_file(&new_client->dev, &dev_attr_temp1_input);
+		device_create_file(&new_client->dev, &dev_attr_temp2_input);
+		device_create_file(&new_client->dev, &dev_attr_temp1_min);
+		device_create_file(&new_client->dev, &dev_attr_temp2_min);
+		device_create_file(&new_client->dev, &dev_attr_temp1_max);
+		device_create_file(&new_client->dev, &dev_attr_temp2_max);
+		device_create_file(&new_client->dev, &dev_attr_temp1_crit);
+		device_create_file(&new_client->dev, &dev_attr_temp2_crit);
+		device_create_file(&new_client->dev, &dev_attr_temp1_status);
+		device_create_file(&new_client->dev, &dev_attr_temp2_status);
+
+		device_create_file(&new_client->dev, &dev_attr_alarms_temp);
+	}
+	if (data->tempnr == 3) {
+		device_create_file(&new_client->dev, &dev_attr_temp3_input);
+		device_create_file(&new_client->dev, &dev_attr_temp3_min);
+		device_create_file(&new_client->dev, &dev_attr_temp3_max);
+		device_create_file(&new_client->dev, &dev_attr_temp3_crit);
+		device_create_file(&new_client->dev, &dev_attr_temp3_status);
+	}
+	if (data->innr == 14) {
+		device_create_file(&new_client->dev, &dev_attr_temp4_input);
+		device_create_file(&new_client->dev, &dev_attr_temp5_input);
+		device_create_file(&new_client->dev, &dev_attr_temp6_input);
+		device_create_file(&new_client->dev, &dev_attr_temp4_min);
+		device_create_file(&new_client->dev, &dev_attr_temp5_min);
+		device_create_file(&new_client->dev, &dev_attr_temp6_min);
+		device_create_file(&new_client->dev, &dev_attr_temp4_max);
+		device_create_file(&new_client->dev, &dev_attr_temp5_max);
+		device_create_file(&new_client->dev, &dev_attr_temp6_max);
+		device_create_file(&new_client->dev, &dev_attr_temp4_crit);
+		device_create_file(&new_client->dev, &dev_attr_temp5_crit);
+		device_create_file(&new_client->dev, &dev_attr_temp6_crit);
+		device_create_file(&new_client->dev, &dev_attr_temp4_status);
+		device_create_file(&new_client->dev, &dev_attr_temp5_status);
+		device_create_file(&new_client->dev, &dev_attr_temp6_status);
+	}
+
+	if (data->fannr) {
+		device_create_file(&new_client->dev, &dev_attr_fan1_input);
+		device_create_file(&new_client->dev, &dev_attr_fan2_input);
+		device_create_file(&new_client->dev, &dev_attr_fan1_min);
+		device_create_file(&new_client->dev, &dev_attr_fan2_min);
+		device_create_file(&new_client->dev, &dev_attr_fan1_div);
+		device_create_file(&new_client->dev, &dev_attr_fan2_div);
+		device_create_file(&new_client->dev, &dev_attr_fan1_status);
+		device_create_file(&new_client->dev, &dev_attr_fan2_status);
+
+		if (FAN_CONFIG_CONTROL(data->fan_conf, 0))
+			device_create_file(&new_client->dev, &dev_attr_pwm1);
+		if (FAN_CONFIG_CONTROL(data->fan_conf, 1))
+			device_create_file(&new_client->dev, &dev_attr_pwm2);
+	}
+	if (data->fannr == 3) {
+		device_create_file(&new_client->dev, &dev_attr_fan3_input);
+		device_create_file(&new_client->dev, &dev_attr_fan3_min);
+		device_create_file(&new_client->dev, &dev_attr_fan3_div);
+		device_create_file(&new_client->dev, &dev_attr_fan3_status);
+
+		if (FAN_CONFIG_CONTROL(data->fan_conf, 2))
+			device_create_file(&new_client->dev, &dev_attr_pwm3);
+	}
+
+	return 0;
+
+ERROR2:
+	for (i = 0; i < 3; i++) {
+		if (data->address[i]) {
+			release_region(data->address[i], PC87360_EXTENT);
+		}
+	}
+ERROR1:
+	kfree(data);
+	return err;
+}
+
+static int pc87360_detach_client(struct i2c_client *client)
+{
+	struct pc87360_data *data = i2c_get_clientdata(client);
+	int i;
+
+	if ((i = i2c_detach_client(client))) {
+		dev_err(&client->dev, "Client deregistration failed, "
+			"client not detached.\n");
+		return i;
+	}
+
+	for (i = 0; i < 3; i++) {
+		if (data->address[i]) {
+			release_region(data->address[i], PC87360_EXTENT);
+		}
+	}
+	kfree(data);
+
+	return 0;
+}
+
+/* ldi is the logical device index
+   bank is for voltages and temperatures only */
+static int pc87360_read_value(struct pc87360_data *data, u8 ldi, u8 bank,
+			      u8 reg)
+{
+	int res;
+
+	down(&(data->lock));
+	if (bank != NO_BANK)
+		outb_p(bank, data->address[ldi] + PC87365_REG_BANK);
+	res = inb_p(data->address[ldi] + reg);
+	up(&(data->lock));
+
+	return res;
+}
+
+static void pc87360_write_value(struct pc87360_data *data, u8 ldi, u8 bank,
+				u8 reg, u8 value)
+{
+	down(&(data->lock));
+	if (bank != NO_BANK)
+		outb_p(bank, data->address[ldi] + PC87365_REG_BANK);
+	outb_p(value, data->address[ldi] + reg);
+	up(&(data->lock));
+}
+
+static void pc87360_init_client(struct i2c_client *client, int use_thermistors)
+{
+	struct pc87360_data *data = i2c_get_clientdata(client);
+	int i, nr;
+	const u8 init_in[14] = { 2, 2, 2, 2, 2, 2, 2, 1, 1, 3, 1, 2, 2, 2 };
+	const u8 init_temp[3] = { 2, 2, 1 };
+	u8 reg;
+
+	if (init >= 2 && data->innr) {
+		reg = pc87360_read_value(data, LD_IN, NO_BANK,
+					 PC87365_REG_IN_CONVRATE);
+		dev_info(&client->dev, "VLM conversion set to"
+			 "1s period, 160us delay\n");
+		pc87360_write_value(data, LD_IN, NO_BANK,
+				    PC87365_REG_IN_CONVRATE,
+				    (reg & 0xC0) | 0x11);
+	}
+
+	nr = data->innr < 11 ? data->innr : 11;
+	for (i=0; i<nr; i++) {
+		if (init >= init_in[i]) {
+			/* Forcibly enable voltage channel */
+			reg = pc87360_read_value(data, LD_IN, i,
+						 PC87365_REG_IN_STATUS);
+			if (!(reg & 0x01)) {
+				dev_dbg(&client->dev, "Forcibly "
+					"enabling in%d\n", i);
+				pc87360_write_value(data, LD_IN, i,
+						    PC87365_REG_IN_STATUS,
+						    (reg & 0x68) | 0x87);
+			}
+		}
+	}
+
+	/* We can't blindly trust the Super-I/O space configuration bit,
+	   most BIOS won't set it properly */
+	for (i=11; i<data->innr; i++) {
+		reg = pc87360_read_value(data, LD_IN, i,
+					 PC87365_REG_TEMP_STATUS);
+		use_thermistors = use_thermistors || (reg & 0x01);
+	}
+
+	i = use_thermistors ? 2 : 0;
+	for (; i<data->tempnr; i++) {
+		if (init >= init_temp[i]) {
+			/* Forcibly enable temperature channel */
+			reg = pc87360_read_value(data, LD_TEMP, i,
+						 PC87365_REG_TEMP_STATUS);
+			if (!(reg & 0x01)) {
+				dev_dbg(&client->dev, "Forcibly "
+					"enabling temp%d\n", i+1);
+				pc87360_write_value(data, LD_TEMP, i,
+						    PC87365_REG_TEMP_STATUS,
+						    0xCF);
+			}
+		}
+	}
+
+	if (use_thermistors) {
+		for (i=11; i<data->innr; i++) {
+			if (init >= init_in[i]) {
+				/* The pin may already be used by thermal
+				   diodes */
+				reg = pc87360_read_value(data, LD_TEMP,
+				      (i-11)/2, PC87365_REG_TEMP_STATUS);
+				if (reg & 0x01) {
+					dev_dbg(&client->dev, "Skipping "
+						"temp%d, pin already in use "
+						"by temp%d\n", i-7, (i-11)/2);
+					continue;
+				}
+
+				/* Forcibly enable thermistor channel */
+				reg = pc87360_read_value(data, LD_IN, i,
+							 PC87365_REG_IN_STATUS);
+				if (!(reg & 0x01)) {
+					dev_dbg(&client->dev, "Forcibly "
+						"enabling temp%d\n", i-7);
+					pc87360_write_value(data, LD_IN, i,
+						PC87365_REG_TEMP_STATUS,
+						(reg & 0x60) | 0x8F);
+				}
+			}
+		}
+	}
+
+	if (data->innr) {
+		reg = pc87360_read_value(data, LD_IN, NO_BANK,
+					 PC87365_REG_IN_CONFIG);
+		if (reg & 0x01) {
+			dev_dbg(&client->dev, "Forcibly "
+				"enabling monitoring (VLM)\n");
+			pc87360_write_value(data, LD_IN, NO_BANK,
+					    PC87365_REG_IN_CONFIG,
+					    reg & 0xFE);
+		}
+	}
+
+	if (data->tempnr) {
+		reg = pc87360_read_value(data, LD_TEMP, NO_BANK,
+					 PC87365_REG_TEMP_CONFIG);
+		if (reg & 0x01) {
+			dev_dbg(&client->dev, "Forcibly enabling "
+				"monitoring (TMS)\n");
+			pc87360_write_value(data, LD_TEMP, NO_BANK,
+					    PC87365_REG_TEMP_CONFIG,
+					    reg & 0xFE);
+		}
+
+		if (init >= 2) {
+			/* Chip config as documented by National Semi. */
+			pc87360_write_value(data, LD_TEMP, 0xF, 0xA, 0x08);
+			/* We voluntarily omit the bank here, in case the
+			   sequence itself matters. It shouldn't be a problem,
+			   since nobody else is supposed to access the
+			   device at that point. */
+			pc87360_write_value(data, LD_TEMP, NO_BANK, 0xB, 0x04);
+			pc87360_write_value(data, LD_TEMP, NO_BANK, 0xC, 0x35);
+			pc87360_write_value(data, LD_TEMP, NO_BANK, 0xD, 0x05);
+			pc87360_write_value(data, LD_TEMP, NO_BANK, 0xE, 0x05);
+		}
+	}
+}
+
+static void pc87360_autodiv(struct i2c_client *client, int nr)
+{
+	struct pc87360_data *data = i2c_get_clientdata(client);
+	u8 old_min = data->fan_min[nr];
+
+	/* Increase clock divider if needed and possible */
+	if ((data->fan_status[nr] & 0x04) /* overflow flag */
+	 || (data->fan[nr] >= 224)) { /* next to overflow */
+		if ((data->fan_status[nr] & 0x60) != 0x60) {
+			data->fan_status[nr] += 0x20;
+			data->fan_min[nr] >>= 1;
+			data->fan[nr] >>= 1;
+			dev_dbg(&client->dev, "Increasing "
+				"clock divider to %d for fan %d\n",
+				FAN_DIV_FROM_REG(data->fan_status[nr]), nr+1);
+		}
+	} else {
+		/* Decrease clock divider if possible */
+		while (!(data->fan_min[nr] & 0x80) /* min "nails" divider */
+		 && data->fan[nr] < 85 /* bad accuracy */
+		 && (data->fan_status[nr] & 0x60) != 0x00) {
+			data->fan_status[nr] -= 0x20;
+			data->fan_min[nr] <<= 1;
+			data->fan[nr] <<= 1;
+			dev_dbg(&client->dev, "Decreasing "
+				"clock divider to %d for fan %d\n",
+				FAN_DIV_FROM_REG(data->fan_status[nr]),
+				nr+1);
+		}
+	}
+
+	/* Write new fan min if it changed */
+	if (old_min != data->fan_min[nr]) {
+		pc87360_write_value(data, LD_FAN, NO_BANK,
+				    PC87360_REG_FAN_MIN(nr),
+				    data->fan_min[nr]);
+	}
+}
+
+static struct pc87360_data *pc87360_update_device(struct device *dev)
+{
+	struct i2c_client *client = to_i2c_client(dev);
+	struct pc87360_data *data = i2c_get_clientdata(client);
+	u8 i;
+
+	down(&data->update_lock);
+
+	if ((jiffies - data->last_updated > HZ * 2)
+	 || (jiffies < data->last_updated) || !data->valid) {
+		dev_dbg(&client->dev, "Data update\n");
+
+		/* Fans */
+		for (i = 0; i < data->fannr; i++) {
+			if (FAN_CONFIG_MONITOR(data->fan_conf, i)) {
+				data->fan_status[i] =
+					pc87360_read_value(data, LD_FAN,
+					NO_BANK, PC87360_REG_FAN_STATUS(i));
+				data->fan[i] = pc87360_read_value(data, LD_FAN,
+					       NO_BANK, PC87360_REG_FAN(i));
+				data->fan_min[i] = pc87360_read_value(data,
+						   LD_FAN, NO_BANK,
+						   PC87360_REG_FAN_MIN(i));
+				/* Change clock divider if needed */
+				pc87360_autodiv(client, i);
+				/* Clear bits and write new divider */
+				pc87360_write_value(data, LD_FAN, NO_BANK,
+						    PC87360_REG_FAN_STATUS(i),
+						    data->fan_status[i]);
+			}
+			if (FAN_CONFIG_CONTROL(data->fan_conf, i))
+				data->pwm[i] = pc87360_read_value(data, LD_FAN,
+					       NO_BANK, PC87360_REG_PWM(i));
+		}
+
+		/* Voltages */
+		for (i = 0; i < data->innr; i++) {
+			data->in_status[i] = pc87360_read_value(data, LD_IN, i,
+					     PC87365_REG_IN_STATUS);
+			/* Clear bits */
+			pc87360_write_value(data, LD_IN, i,
+					    PC87365_REG_IN_STATUS,
+					    data->in_status[i]);
+			if ((data->in_status[i] & 0x81) == 0x81) {
+				data->in[i] = pc87360_read_value(data, LD_IN,
+					      i, PC87365_REG_IN);
+			}
+			if (data->in_status[i] & 0x01) {
+				data->in_min[i] = pc87360_read_value(data,
+						  LD_IN, i,
+						  PC87365_REG_IN_MIN);
+				data->in_max[i] = pc87360_read_value(data,
+						  LD_IN, i,
+						  PC87365_REG_IN_MAX);
+				if (i >= 11)
+					data->in_crit[i-11] =
+						pc87360_read_value(data, LD_IN,
+						i, PC87365_REG_TEMP_CRIT);
+			}
+		}
+		if (data->innr) {
+			data->in_alarms = pc87360_read_value(data, LD_IN,
+					  NO_BANK, PC87365_REG_IN_ALARMS1)
+					| ((pc87360_read_value(data, LD_IN,
+					    NO_BANK, PC87365_REG_IN_ALARMS2)
+					    & 0x07) << 8);
+			data->vid = (data->vid_conf & 0xE0) ?
+				    pc87360_read_value(data, LD_IN,
+				    NO_BANK, PC87365_REG_VID) : 0x1F;
+		}
+
+		/* Temperatures */
+		for (i = 0; i < data->tempnr; i++) {
+			data->temp_status[i] = pc87360_read_value(data,
+					       LD_TEMP, i,
+					       PC87365_REG_TEMP_STATUS);
+			/* Clear bits */
+			pc87360_write_value(data, LD_TEMP, i,
+					    PC87365_REG_TEMP_STATUS,
+					    data->temp_status[i]);
+			if ((data->temp_status[i] & 0x81) == 0x81) {
+				data->temp[i] = pc87360_read_value(data,
+						LD_TEMP, i,
+						PC87365_REG_TEMP);
+			}
+			if (data->temp_status[i] & 0x01) {
+				data->temp_min[i] = pc87360_read_value(data,
+						    LD_TEMP, i,
+						    PC87365_REG_TEMP_MIN);
+				data->temp_max[i] = pc87360_read_value(data,
+						    LD_TEMP, i,
+						    PC87365_REG_TEMP_MAX);
+				data->temp_crit[i] = pc87360_read_value(data,
+						     LD_TEMP, i,
+						     PC87365_REG_TEMP_CRIT);
+			}
+		}
+		if (data->tempnr) {
+			data->temp_alarms = pc87360_read_value(data, LD_TEMP,
+					    NO_BANK, PC87365_REG_TEMP_ALARMS)
+					    & 0x3F;
+		}
+
+		data->last_updated = jiffies;
+		data->valid = 1;
+	}
+
+	up(&data->update_lock);
+
+	return data;
+}
+
+static int __init pc87360_init(void)
+{
+	int i;
+
+	if (pc87360_find(0x2e, &devid, extra_isa)
+	 && pc87360_find(0x4e, &devid, extra_isa)) {
+		printk(KERN_WARNING "pc87360: PC8736x not detected, "
+		       "module not inserted.\n");
+		return -ENODEV;
+	}
+
+	/* Arbitrarily pick one of the addresses */
+	for (i = 0; i < 3; i++) {
+		if (extra_isa[i] != 0x0000) {
+			normal_isa[0] = extra_isa[i];
+			break;
+		}
+	}
+
+	if (normal_isa[0] == 0x0000) {
+		printk(KERN_WARNING "pc87360: No active logical device, "
+		       "module not inserted.\n");
+		return -ENODEV;
+	}
+
+	return i2c_add_driver(&pc87360_driver);
+}
+
+static void __exit pc87360_exit(void)
+{
+	i2c_del_driver(&pc87360_driver);
+}
+
+
+MODULE_AUTHOR("Jean Delvare <khali at linux-fr.org>");
+MODULE_DESCRIPTION("PC8736x hardware monitor");
+MODULE_LICENSE("GPL");
+
+module_init(pc87360_init);
+module_exit(pc87360_exit);


-- 
Jean Delvare
http://khali.linux-fr.org/



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