[PATCH] I2C: W83792D driver 1/3
I would like to announce support for W83792D chip. This driver was developed
by Winbond Electronics Corp. I added sysfs attributes callbacks infrastructure
plus various code fixes and codingstyle cleanups. I would like to thank Winbond
for supporting free software.
This patch is against 2.6.13rc3 plus hwmon-class and hwmon-split.
Separate patch for documantation and hwmon class register will follow.
Signed-off-by: Rudolf Marek <r.marek@sh.cvut.cz>
Signed-off-by: Chunhao Huang <DZShen@Winbond.com.tw>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/hwmon/w83792d.c b/drivers/hwmon/w83792d.c
new file mode 100644
index 0000000..fa43b6f
--- /dev/null
+++ b/drivers/hwmon/w83792d.c
@@ -0,0 +1,1633 @@
+/*
+ w83792d.c - Part of lm_sensors, Linux kernel modules for hardware
+ monitoring
+ Copyright (C) 2004, 2005 Winbond Electronics Corp.
+ Chunhao Huang <DZShen@Winbond.com.tw>,
+ Rudolf Marek <r.marek@sh.cvut.cz>
+
+ 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.
+
+ Note:
+ 1. This driver is only for 2.6 kernel, 2.4 kernel need a different driver.
+ 2. This driver is only for Winbond W83792D C version device, there
+ are also some motherboards with B version W83792D device. The
+ calculation method to in6-in7(measured value, limits) is a little
+ different between C and B version. C or B version can be identified
+ by CR[0x49h].
+*/
+
+/*
+ Supports following chips:
+
+ Chip #vin #fanin #pwm #temp wchipid vendid i2c ISA
+ w83792d 9 7 7 3 0x7a 0x5ca3 yes no
+*/
+
+#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 <linux/hwmon-sysfs.h>
+
+/* Addresses to scan */
+static unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, 0x2f, I2C_CLIENT_END };
+
+/* Insmod parameters */
+SENSORS_INSMOD_1(w83792d);
+I2C_CLIENT_MODULE_PARM(force_subclients, "List of subclient addresses: "
+ "{bus, clientaddr, subclientaddr1, subclientaddr2}");
+
+static int init;
+module_param(init, bool, 0);
+MODULE_PARM_DESC(init, "Set to one to force chip initialization");
+
+/* The W83792D registers */
+static const u8 W83792D_REG_IN[9] = {
+ 0x20, /* Vcore A in DataSheet */
+ 0x21, /* Vcore B in DataSheet */
+ 0x22, /* VIN0 in DataSheet */
+ 0x23, /* VIN1 in DataSheet */
+ 0x24, /* VIN2 in DataSheet */
+ 0x25, /* VIN3 in DataSheet */
+ 0x26, /* 5VCC in DataSheet */
+ 0xB0, /* 5VSB in DataSheet */
+ 0xB1 /* VBAT in DataSheet */
+};
+#define W83792D_REG_LOW_BITS1 0x3E /* Low Bits I in DataSheet */
+#define W83792D_REG_LOW_BITS2 0x3F /* Low Bits II in DataSheet */
+static const u8 W83792D_REG_IN_MAX[9] = {
+ 0x2B, /* Vcore A High Limit in DataSheet */
+ 0x2D, /* Vcore B High Limit in DataSheet */
+ 0x2F, /* VIN0 High Limit in DataSheet */
+ 0x31, /* VIN1 High Limit in DataSheet */
+ 0x33, /* VIN2 High Limit in DataSheet */
+ 0x35, /* VIN3 High Limit in DataSheet */
+ 0x37, /* 5VCC High Limit in DataSheet */
+ 0xB4, /* 5VSB High Limit in DataSheet */
+ 0xB6 /* VBAT High Limit in DataSheet */
+};
+static const u8 W83792D_REG_IN_MIN[9] = {
+ 0x2C, /* Vcore A Low Limit in DataSheet */
+ 0x2E, /* Vcore B Low Limit in DataSheet */
+ 0x30, /* VIN0 Low Limit in DataSheet */
+ 0x32, /* VIN1 Low Limit in DataSheet */
+ 0x34, /* VIN2 Low Limit in DataSheet */
+ 0x36, /* VIN3 Low Limit in DataSheet */
+ 0x38, /* 5VCC Low Limit in DataSheet */
+ 0xB5, /* 5VSB Low Limit in DataSheet */
+ 0xB7 /* VBAT Low Limit in DataSheet */
+};
+static const u8 W83792D_REG_FAN[7] = {
+ 0x28, /* FAN 1 Count in DataSheet */
+ 0x29, /* FAN 2 Count in DataSheet */
+ 0x2A, /* FAN 3 Count in DataSheet */
+ 0xB8, /* FAN 4 Count in DataSheet */
+ 0xB9, /* FAN 5 Count in DataSheet */
+ 0xBA, /* FAN 6 Count in DataSheet */
+ 0xBE /* FAN 7 Count in DataSheet */
+};
+static const u8 W83792D_REG_FAN_MIN[7] = {
+ 0x3B, /* FAN 1 Count Low Limit in DataSheet */
+ 0x3C, /* FAN 2 Count Low Limit in DataSheet */
+ 0x3D, /* FAN 3 Count Low Limit in DataSheet */
+ 0xBB, /* FAN 4 Count Low Limit in DataSheet */
+ 0xBC, /* FAN 5 Count Low Limit in DataSheet */
+ 0xBD, /* FAN 6 Count Low Limit in DataSheet */
+ 0xBF /* FAN 7 Count Low Limit in DataSheet */
+};
+#define W83792D_REG_FAN_CFG 0x84 /* FAN Configuration in DataSheet */
+static const u8 W83792D_REG_FAN_DIV[4] = {
+ 0x47, /* contains FAN2 and FAN1 Divisor */
+ 0x5B, /* contains FAN4 and FAN3 Divisor */
+ 0x5C, /* contains FAN6 and FAN5 Divisor */
+ 0x9E /* contains FAN7 Divisor. */
+};
+static const u8 W83792D_REG_PWM[7] = {
+ 0x81, /* FAN 1 Duty Cycle, be used to control */
+ 0x83, /* FAN 2 Duty Cycle, be used to control */
+ 0x94, /* FAN 3 Duty Cycle, be used to control */
+ 0xA3, /* FAN 4 Duty Cycle, be used to control */
+ 0xA4, /* FAN 5 Duty Cycle, be used to control */
+ 0xA5, /* FAN 6 Duty Cycle, be used to control */
+ 0xA6 /* FAN 7 Duty Cycle, be used to control */
+};
+#define W83792D_REG_BANK 0x4E
+#define W83792D_REG_TEMP2_CONFIG 0xC2
+#define W83792D_REG_TEMP3_CONFIG 0xCA
+
+static const u8 W83792D_REG_TEMP1[3] = {
+ 0x27, /* TEMP 1 in DataSheet */
+ 0x39, /* TEMP 1 Over in DataSheet */
+ 0x3A, /* TEMP 1 Hyst in DataSheet */
+};
+
+static const u8 W83792D_REG_TEMP_ADD[2][6] = {
+ { 0xC0, /* TEMP 2 in DataSheet */
+ 0xC1, /* TEMP 2(0.5 deg) in DataSheet */
+ 0xC5, /* TEMP 2 Over High part in DataSheet */
+ 0xC6, /* TEMP 2 Over Low part in DataSheet */
+ 0xC3, /* TEMP 2 Thyst High part in DataSheet */
+ 0xC4 }, /* TEMP 2 Thyst Low part in DataSheet */
+ { 0xC8, /* TEMP 3 in DataSheet */
+ 0xC9, /* TEMP 3(0.5 deg) in DataSheet */
+ 0xCD, /* TEMP 3 Over High part in DataSheet */
+ 0xCE, /* TEMP 3 Over Low part in DataSheet */
+ 0xCB, /* TEMP 3 Thyst High part in DataSheet */
+ 0xCC } /* TEMP 3 Thyst Low part in DataSheet */
+};
+
+static const u8 W83792D_REG_THERMAL[3] = {
+ 0x85, /* SmartFanI: Fan1 target value */
+ 0x86, /* SmartFanI: Fan2 target value */
+ 0x96 /* SmartFanI: Fan3 target value */
+};
+
+static const u8 W83792D_REG_TOLERANCE[3] = {
+ 0x87, /* (bit3-0)SmartFan Fan1 tolerance */
+ 0x87, /* (bit7-4)SmartFan Fan2 tolerance */
+ 0x97 /* (bit3-0)SmartFan Fan3 tolerance */
+};
+
+static const u8 W83792D_REG_POINTS[3][4] = {
+ { 0x85, /* SmartFanII: Fan1 temp point 1 */
+ 0xE3, /* SmartFanII: Fan1 temp point 2 */
+ 0xE4, /* SmartFanII: Fan1 temp point 3 */
+ 0xE5 }, /* SmartFanII: Fan1 temp point 4 */
+ { 0x86, /* SmartFanII: Fan2 temp point 1 */
+ 0xE6, /* SmartFanII: Fan2 temp point 2 */
+ 0xE7, /* SmartFanII: Fan2 temp point 3 */
+ 0xE8 }, /* SmartFanII: Fan2 temp point 4 */
+ { 0x96, /* SmartFanII: Fan3 temp point 1 */
+ 0xE9, /* SmartFanII: Fan3 temp point 2 */
+ 0xEA, /* SmartFanII: Fan3 temp point 3 */
+ 0xEB } /* SmartFanII: Fan3 temp point 4 */
+};
+
+static const u8 W83792D_REG_LEVELS[3][4] = {
+ { 0x88, /* (bit3-0) SmartFanII: Fan1 Non-Stop */
+ 0x88, /* (bit7-4) SmartFanII: Fan1 Level 1 */
+ 0xE0, /* (bit7-4) SmartFanII: Fan1 Level 2 */
+ 0xE0 }, /* (bit3-0) SmartFanII: Fan1 Level 3 */
+ { 0x89, /* (bit3-0) SmartFanII: Fan2 Non-Stop */
+ 0x89, /* (bit7-4) SmartFanII: Fan2 Level 1 */
+ 0xE1, /* (bit7-4) SmartFanII: Fan2 Level 2 */
+ 0xE1 }, /* (bit3-0) SmartFanII: Fan2 Level 3 */
+ { 0x98, /* (bit3-0) SmartFanII: Fan3 Non-Stop */
+ 0x98, /* (bit7-4) SmartFanII: Fan3 Level 1 */
+ 0xE2, /* (bit7-4) SmartFanII: Fan3 Level 2 */
+ 0xE2 } /* (bit3-0) SmartFanII: Fan3 Level 3 */
+};
+
+#define W83792D_REG_CONFIG 0x40
+#define W83792D_REG_VID_FANDIV 0x47
+#define W83792D_REG_CHIPID 0x49
+#define W83792D_REG_WCHIPID 0x58
+#define W83792D_REG_CHIPMAN 0x4F
+#define W83792D_REG_PIN 0x4B
+#define W83792D_REG_I2C_SUBADDR 0x4A
+
+#define W83792D_REG_ALARM1 0xA9 /* realtime status register1 */
+#define W83792D_REG_ALARM2 0xAA /* realtime status register2 */
+#define W83792D_REG_ALARM3 0xAB /* realtime status register3 */
+#define W83792D_REG_CHASSIS 0x42 /* Bit 5: Case Open status bit */
+#define W83792D_REG_CHASSIS_CLR 0x44 /* Bit 7: Case Open CLR_CHS/Reset bit */
+
+/* control in0/in1 's limit modifiability */
+#define W83792D_REG_VID_IN_B 0x17
+
+#define W83792D_REG_VBAT 0x5D
+#define W83792D_REG_I2C_ADDR 0x48
+
+/* Conversions. Rounding and limit checking is only done on the TO_REG
+ variants. Note that you should be a bit careful with which arguments
+ these macros are called: arguments may be evaluated more than once.
+ Fixing this is just not worth it. */
+#define IN_FROM_REG(nr,val) (((nr)<=1)?(val*2): \
+ ((((nr)==6)||((nr)==7))?(val*6):(val*4)))
+#define IN_TO_REG(nr,val) (((nr)<=1)?(val/2): \
+ ((((nr)==6)||((nr)==7))?(val/6):(val/4)))
+
+static inline u8
+FAN_TO_REG(long rpm, int div)
+{
+ if (rpm == 0)
+ return 255;
+ rpm = SENSORS_LIMIT(rpm, 1, 1000000);
+ return SENSORS_LIMIT((1350000 + rpm * div / 2) / (rpm * div), 1, 254);
+}
+
+#define FAN_FROM_REG(val,div) ((val) == 0 ? -1 : \
+ ((val) == 255 ? 0 : \
+ 1350000 / ((val) * (div))))
+
+/* for temp1 */
+#define TEMP1_TO_REG(val) (SENSORS_LIMIT(((val) < 0 ? (val)+0x100*1000 \
+ : (val)) / 1000, 0, 0xff))
+#define TEMP1_FROM_REG(val) (((val) & 0x80 ? (val)-0x100 : (val)) * 1000)
+/* for temp2 and temp3, because they need addtional resolution */
+#define TEMP_ADD_FROM_REG(val1, val2) \
+ ((((val1) & 0x80 ? (val1)-0x100 \
+ : (val1)) * 1000) + ((val2 & 0x80) ? 500 : 0))
+#define TEMP_ADD_TO_REG_HIGH(val) \
+ (SENSORS_LIMIT(((val) < 0 ? (val)+0x100*1000 \
+ : (val)) / 1000, 0, 0xff))
+#define TEMP_ADD_TO_REG_LOW(val) ((val%1000) ? 0x80 : 0x00)
+
+#define PWM_FROM_REG(val) (val)
+#define PWM_TO_REG(val) (SENSORS_LIMIT((val),0,255))
+#define DIV_FROM_REG(val) (1 << (val))
+
+static inline u8
+DIV_TO_REG(long val)
+{
+ int i;
+ val = SENSORS_LIMIT(val, 1, 128) >> 1;
+ for (i = 0; i < 6; i++) {
+ if (val == 0)
+ break;
+ val >>= 1;
+ }
+ return ((u8) i);
+}
+
+struct w83792d_data {
+ struct i2c_client client;
+ struct semaphore lock;
+ enum chips type;
+
+ struct semaphore update_lock;
+ char valid; /* !=0 if following fields are valid */
+ unsigned long last_updated; /* In jiffies */
+
+ /* array of 2 pointers to subclients */
+ struct i2c_client *lm75[2];
+
+ u8 in[9]; /* Register value */
+ u8 in_max[9]; /* Register value */
+ u8 in_min[9]; /* Register value */
+ u8 low_bits[2]; /* Additional resolution to voltage in0-6 */
+ u8 fan[7]; /* Register value */
+ u8 fan_min[7]; /* Register value */
+ u8 temp1[3]; /* current, over, thyst */
+ u8 temp_add[2][6]; /* Register value */
+ u8 fan_div[7]; /* Register encoding, shifted right */
+ u8 pwm[7]; /* We only consider the first 3 set of pwm,
+ although 792 chip has 7 set of pwm. */
+ u8 pwmenable[3];
+ u8 pwm_mode[7]; /* indicates PWM or DC mode: 1->PWM; 0->DC */
+ u32 alarms; /* realtime status register encoding,combined */
+ u8 chassis; /* Chassis status */
+ u8 chassis_clear; /* CLR_CHS, clear chassis intrusion detection */
+ u8 thermal_cruise[3]; /* Smart FanI: Fan1,2,3 target value */
+ u8 tolerance[3]; /* Fan1,2,3 tolerance(Smart Fan I/II) */
+ u8 sf2_points[3][4]; /* Smart FanII: Fan1,2,3 temperature points */
+ u8 sf2_levels[3][4]; /* Smart FanII: Fan1,2,3 duty cycle levels */
+};
+
+static int w83792d_attach_adapter(struct i2c_adapter *adapter);
+static int w83792d_detect(struct i2c_adapter *adapter, int address, int kind);
+static int w83792d_detach_client(struct i2c_client *client);
+
+static int w83792d_read_value(struct i2c_client *client, u8 register);
+static int w83792d_write_value(struct i2c_client *client, u8 register,
+ u8 value);
+static struct w83792d_data *w83792d_update_device(struct device *dev);
+
+#ifdef DEBUG
+static void w83792d_print_debug(struct w83792d_data *data, struct device *dev);
+#endif
+
+static void w83792d_init_client(struct i2c_client *client);
+
+static struct i2c_driver w83792d_driver = {
+ .owner = THIS_MODULE,
+ .name = "w83792d",
+ .flags = I2C_DF_NOTIFY,
+ .attach_adapter = w83792d_attach_adapter,
+ .detach_client = w83792d_detach_client,
+};
+
+static long in_count_from_reg(int nr, struct w83792d_data *data)
+{
+ u16 vol_count = data->in[nr];
+ u16 low_bits = 0;
+ vol_count = (vol_count << 2);
+ switch (nr)
+ {
+ case 0: /* vin0 */
+ low_bits = (data->low_bits[0]) & 0x03;
+ break;
+ case 1: /* vin1 */
+ low_bits = ((data->low_bits[0]) & 0x0c) >> 2;
+ break;
+ case 2: /* vin2 */
+ low_bits = ((data->low_bits[0]) & 0x30) >> 4;
+ break;
+ case 3: /* vin3 */
+ low_bits = ((data->low_bits[0]) & 0xc0) >> 6;
+ break;
+ case 4: /* vin4 */
+ low_bits = (data->low_bits[1]) & 0x03;
+ break;
+ case 5: /* vin5 */
+ low_bits = ((data->low_bits[1]) & 0x0c) >> 2;
+ break;
+ case 6: /* vin6 */
+ low_bits = ((data->low_bits[1]) & 0x30) >> 4;
+ default:
+ break;
+ }
+ vol_count = vol_count | low_bits;
+ return vol_count;
+}
+
+/* following are the sysfs callback functions */
+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 w83792d_data *data = w83792d_update_device(dev);
+ return sprintf(buf,"%ld\n", IN_FROM_REG(nr,(in_count_from_reg(nr, data))));
+}
+
+#define show_in_reg(reg) \
+static ssize_t show_##reg(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 w83792d_data *data = w83792d_update_device(dev); \
+ return sprintf(buf,"%ld\n", (long)(IN_FROM_REG(nr, (data->reg[nr])*4))); \
+}
+
+show_in_reg(in_min);
+show_in_reg(in_max);
+
+#define store_in_reg(REG, reg) \
+static ssize_t store_in_##reg (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 w83792d_data *data = i2c_get_clientdata(client); \
+ u32 val; \
+ \
+ val = simple_strtoul(buf, NULL, 10); \
+ data->in_##reg[nr] = SENSORS_LIMIT(IN_TO_REG(nr, val)/4, 0, 255); \
+ w83792d_write_value(client, W83792D_REG_IN_##REG[nr], data->in_##reg[nr]); \
+ \
+ return count; \
+}
+store_in_reg(MIN, min);
+store_in_reg(MAX, max);
+
+#define sysfs_in_reg(offset) \
+static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO, show_in, \
+ NULL, offset); \
+static SENSOR_DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \
+ show_in_min, store_in_min, offset); \
+static SENSOR_DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \
+ show_in_max, store_in_max, offset);
+
+sysfs_in_reg(0);
+sysfs_in_reg(1);
+sysfs_in_reg(2);
+sysfs_in_reg(3);
+sysfs_in_reg(4);
+sysfs_in_reg(5);
+sysfs_in_reg(6);
+sysfs_in_reg(7);
+sysfs_in_reg(8);
+
+#define device_create_file_in(client, offset) \
+do { \
+device_create_file(&client->dev, &sensor_dev_attr_in##offset##_input.dev_attr); \
+device_create_file(&client->dev, &sensor_dev_attr_in##offset##_max.dev_attr); \
+device_create_file(&client->dev, &sensor_dev_attr_in##offset##_min.dev_attr); \
+} while (0)
+
+#define show_fan_reg(reg) \
+static ssize_t show_##reg (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 - 1; \
+ struct w83792d_data *data = w83792d_update_device(dev); \
+ return sprintf(buf,"%d\n", \
+ FAN_FROM_REG(data->reg[nr], DIV_FROM_REG(data->fan_div[nr]))); \
+}
+
+show_fan_reg(fan);
+show_fan_reg(fan_min);
+
+static ssize_t
+store_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 - 1;
+ struct i2c_client *client = to_i2c_client(dev);
+ struct w83792d_data *data = i2c_get_clientdata(client);
+ u32 val;
+
+ val = simple_strtoul(buf, NULL, 10);
+ data->fan_min[nr] = FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr]));
+ w83792d_write_value(client, W83792D_REG_FAN_MIN[nr],
+ data->fan_min[nr]);
+
+ return count;
+}
+
+static ssize_t
+show_fan_div(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 w83792d_data *data = w83792d_update_device(dev);
+ return sprintf(buf, "%u\n", DIV_FROM_REG(data->fan_div[nr - 1]));
+}
+
+/* Note: we save and restore the fan minimum here, because its value is
+ determined in part by the fan divisor. This follows the principle of
+ least suprise; the user doesn't expect the fan minimum to change just
+ because the divisor changed. */
+static ssize_t
+store_fan_div(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 - 1;
+ struct i2c_client *client = to_i2c_client(dev);
+ struct w83792d_data *data = i2c_get_clientdata(client);
+ unsigned long min;
+ /*u8 reg;*/
+ u8 fan_div_reg = 0;
+ u8 tmp_fan_div;
+
+ /* Save fan_min */
+ min = FAN_FROM_REG(data->fan_min[nr],
+ DIV_FROM_REG(data->fan_div[nr]));
+
+ data->fan_div[nr] = DIV_TO_REG(simple_strtoul(buf, NULL, 10));
+
+ fan_div_reg = w83792d_read_value(client, W83792D_REG_FAN_DIV[nr >> 1]);
+ fan_div_reg &= (nr & 0x01) ? 0x8f : 0xf8;
+ tmp_fan_div = (nr & 0x01) ? (((data->fan_div[nr]) << 4) & 0x70)
+ : ((data->fan_div[nr]) & 0x07);
+ w83792d_write_value(client, W83792D_REG_FAN_DIV[nr >> 1],
+ fan_div_reg | tmp_fan_div);
+
+ /* Restore fan_min */
+ data->fan_min[nr] = FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr]));
+ w83792d_write_value(client, W83792D_REG_FAN_MIN[nr], data->fan_min[nr]);
+
+ return count;
+}
+
+#define sysfs_fan(offset) \
+static SENSOR_DEVICE_ATTR(fan##offset##_input, S_IRUGO, show_fan, NULL, \
+ offset); \
+static SENSOR_DEVICE_ATTR(fan##offset##_div, S_IRUGO | S_IWUSR, \
+ show_fan_div, store_fan_div, offset); \
+static SENSOR_DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \
+ show_fan_min, store_fan_min, offset);
+
+sysfs_fan(1);
+sysfs_fan(2);
+sysfs_fan(3);
+sysfs_fan(4);
+sysfs_fan(5);
+sysfs_fan(6);
+sysfs_fan(7);
+
+#define device_create_file_fan(client, offset) \
+do { \
+device_create_file(&client->dev, &sensor_dev_attr_fan##offset##_input.dev_attr); \
+device_create_file(&client->dev, &sensor_dev_attr_fan##offset##_div.dev_attr); \
+device_create_file(&client->dev, &sensor_dev_attr_fan##offset##_min.dev_attr); \
+} while (0)
+
+
+/* read/write the temperature1, includes measured value and limits */
+
+static ssize_t show_temp1(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 w83792d_data *data = w83792d_update_device(dev);
+ return sprintf(buf, "%d\n", TEMP1_FROM_REG(data->temp1[nr]));
+}
+
+static ssize_t store_temp1(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 w83792d_data *data = i2c_get_clientdata(client);
+ s32 val;
+
+ val = simple_strtol(buf, NULL, 10);
+
+ data->temp1[nr] = TEMP1_TO_REG(val);
+ w83792d_write_value(client, W83792D_REG_TEMP1[nr],
+ data->temp1[nr]);
+
+ return count;
+}
+
+
+static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_temp1, NULL, 0);
+static SENSOR_DEVICE_ATTR(temp1_max, S_IRUGO | S_IWUSR, show_temp1,
+ store_temp1, 1);
+static SENSOR_DEVICE_ATTR(temp1_max_hyst, S_IRUGO | S_IWUSR, show_temp1,
+ store_temp1, 2);
+
+#define device_create_file_temp1(client) \
+do { \
+device_create_file(&client->dev, &sensor_dev_attr_temp1_input.dev_attr); \
+device_create_file(&client->dev, &sensor_dev_attr_temp1_max.dev_attr); \
+device_create_file(&client->dev, &sensor_dev_attr_temp1_max_hyst.dev_attr); \
+} while (0)
+
+
+/* read/write the temperature2-3, includes measured value and limits */
+
+static ssize_t show_temp23(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct sensor_device_attribute_2 *sensor_attr = to_sensor_dev_attr_2(attr);
+ int nr = sensor_attr->nr;
+ int index = sensor_attr->index;
+ struct w83792d_data *data = w83792d_update_device(dev);
+ return sprintf(buf,"%ld\n",
+ (long)TEMP_ADD_FROM_REG(data->temp_add[nr][index],
+ data->temp_add[nr][index+1]));
+}
+
+static ssize_t store_temp23(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct sensor_device_attribute_2 *sensor_attr = to_sensor_dev_attr_2(attr);
+ int nr = sensor_attr->nr;
+ int index = sensor_attr->index;
+ struct i2c_client *client = to_i2c_client(dev);
+ struct w83792d_data *data = i2c_get_clientdata(client);
+ s32 val;
+
+ val = simple_strtol(buf, NULL, 10);
+
+ data->temp_add[nr][index] = TEMP_ADD_TO_REG_HIGH(val);
+ data->temp_add[nr][index+1] = TEMP_ADD_TO_REG_LOW(val);
+ w83792d_write_value(client, W83792D_REG_TEMP_ADD[nr][index],
+ data->temp_add[nr][index]);
+ w83792d_write_value(client, W83792D_REG_TEMP_ADD[nr][index+1],
+ data->temp_add[nr][index+1]);
+
+ return count;
+}
+
+#define sysfs_temp23(name,idx) \
+static SENSOR_DEVICE_ATTR_2(name##_input, S_IRUGO, show_temp23, NULL, \
+ idx, 0); \
+static SENSOR_DEVICE_ATTR_2(name##_max, S_IRUGO | S_IWUSR, \
+ show_temp23, store_temp23, idx, 2); \
+static SENSOR_DEVICE_ATTR_2(name##_max_hyst, S_IRUGO | S_IWUSR, \
+ show_temp23, store_temp23, idx, 4);
+
+sysfs_temp23(temp2,0)
+sysfs_temp23(temp3,1)
+
+#define device_create_file_temp_add(client, offset) \
+do { \
+device_create_file(&client->dev, &sensor_dev_attr_temp##offset##_input.dev_attr); \
+device_create_file(&client->dev, &sensor_dev_attr_temp##offset##_max.dev_attr); \
+device_create_file(&client->dev, \
+&sensor_dev_attr_temp##offset##_max_hyst.dev_attr); \
+} while (0)
+
+
+/* get reatime status of all sensors items: voltage, temp, fan */
+static ssize_t
+show_alarms_reg(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ struct w83792d_data *data = w83792d_update_device(dev);
+ return sprintf(buf, "%d\n", data->alarms);
+}
+
+static
+DEVICE_ATTR(alarms, S_IRUGO, show_alarms_reg, NULL);
+#define device_create_file_alarms(client) \
+device_create_file(&client->dev, &dev_attr_alarms);
+
+
+
+static ssize_t
+show_pwm(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 w83792d_data *data = w83792d_update_device(dev);
+ return sprintf(buf, "%ld\n", (long) PWM_FROM_REG(data->pwm[nr-1]));
+}
+
+static ssize_t
+show_pwmenable(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 - 1;
+ struct w83792d_data *data = w83792d_update_device(dev);
+ long pwm_enable_tmp = 1;
+
+ switch (data->pwmenable[nr]) {
+ case 0:
+ pwm_enable_tmp = 1; /* manual mode */
+ break;
+ case 1:
+ pwm_enable_tmp = 3; /*thermal cruise/Smart Fan I */
+ break;
+ case 2:
+ pwm_enable_tmp = 2; /* Smart Fan II */
+ break;
+ }
+
+ return sprintf(buf, "%ld\n", pwm_enable_tmp);
+}
+
+static ssize_t
+store_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 - 1;
+ struct i2c_client *client = to_i2c_client(dev);
+ struct w83792d_data *data = i2c_get_clientdata(client);
+ u32 val;
+
+ val = simple_strtoul(buf, NULL, 10);
+ data->pwm[nr] = PWM_TO_REG(val);
+ w83792d_write_value(client, W83792D_REG_PWM[nr], data->pwm[nr]);
+
+ return count;
+}
+
+static ssize_t
+store_pwmenable(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 - 1;
+ struct i2c_client *client = to_i2c_client(dev);
+ struct w83792d_data *data = i2c_get_clientdata(client);
+ u32 val;
+ u8 fan_cfg_tmp, cfg1_tmp, cfg2_tmp, cfg3_tmp, cfg4_tmp;
+
+ val = simple_strtoul(buf, NULL, 10);
+ switch (val) {
+ case 1:
+ data->pwmenable[nr] = 0; /* manual mode */
+ break;
+ case 2:
+ data->pwmenable[nr] = 2; /* Smart Fan II */
+ break;
+ case 3:
+ data->pwmenable[nr] = 1; /* thermal cruise/Smart Fan I */
+ break;
+ default:
+ return -EINVAL;
+ }
+ cfg1_tmp = data->pwmenable[0];
+ cfg2_tmp = (data->pwmenable[1]) << 2;
+ cfg3_tmp = (data->pwmenable[2]) << 4;
+ cfg4_tmp = w83792d_read_value(client,W83792D_REG_FAN_CFG) & 0xc0;
+ fan_cfg_tmp = ((cfg4_tmp | cfg3_tmp) | cfg2_tmp) | cfg1_tmp;
+ w83792d_write_value(client, W83792D_REG_FAN_CFG, fan_cfg_tmp);
+
+ return count;
+}
+
+#define sysfs_pwm(offset) \
+static SENSOR_DEVICE_ATTR(pwm##offset, S_IRUGO | S_IWUSR, \
+ show_pwm, store_pwm, offset); \
+static SENSOR_DEVICE_ATTR(pwm##offset##_enable, S_IRUGO | S_IWUSR, \
+ show_pwmenable, store_pwmenable, offset); \
+
+sysfs_pwm(1);
+sysfs_pwm(2);
+sysfs_pwm(3);
+
+
+#define device_create_file_pwm(client, offset) \
+do { \
+device_create_file(&client->dev, &sensor_dev_attr_pwm##offset.dev_attr); \
+} while (0)
+
+#define device_create_file_pwmenable(client, offset) \
+do { \
+device_create_file(&client->dev, &sensor_dev_attr_pwm##offset##_enable.dev_attr); \
+} while (0)
+
+
+static ssize_t
+show_pwm_mode(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 w83792d_data *data = w83792d_update_device(dev);
+ return sprintf(buf, "%d\n", data->pwm_mode[nr-1]);
+}
+
+static ssize_t
+store_pwm_mode(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 - 1;
+ struct i2c_client *client = to_i2c_client(dev);
+ struct w83792d_data *data = i2c_get_clientdata(client);
+ u32 val;
+ u8 pwm_mode_mask = 0;
+
+ val = simple_strtoul(buf, NULL, 10);
+ data->pwm_mode[nr] = SENSORS_LIMIT(val, 0, 1);
+ pwm_mode_mask = w83792d_read_value(client,
+ W83792D_REG_PWM[nr]) & 0x7f;
+ w83792d_write_value(client, W83792D_REG_PWM[nr],
+ ((data->pwm_mode[nr]) << 7) | pwm_mode_mask);
+
+ return count;
+}
+
+#define sysfs_pwm_mode(offset) \
+static SENSOR_DEVICE_ATTR(pwm##offset##_mode, S_IRUGO | S_IWUSR, \
+ show_pwm_mode, store_pwm_mode, offset);
+
+sysfs_pwm_mode(1);
+sysfs_pwm_mode(2);
+sysfs_pwm_mode(3);
+
+#define device_create_file_pwm_mode(client, offset) \
+do { \
+device_create_file(&client->dev, &sensor_dev_attr_pwm##offset##_mode.dev_attr); \
+} while (0)
+
+
+static ssize_t
+show_regs_chassis(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct w83792d_data *data = w83792d_update_device(dev);
+ return sprintf(buf, "%d\n", data->chassis);
+}
+
+static DEVICE_ATTR(chassis, S_IRUGO, show_regs_chassis, NULL);
+
+#define device_create_file_chassis(client) \
+do { \
+device_create_file(&client->dev, &dev_attr_chassis); \
+} while (0)
+
+
+static ssize_t
+show_chassis_clear(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ struct w83792d_data *data = w83792d_update_device(dev);
+ return sprintf(buf, "%d\n", data->chassis_clear);
+}
+
+static ssize_t
+store_chassis_clear(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct w83792d_data *data = i2c_get_clientdata(client);
+ u32 val;
+ u8 temp1 = 0, temp2 = 0;
+
+ val = simple_strtoul(buf, NULL, 10);
+
+ data->chassis_clear = SENSORS_LIMIT(val, 0 ,1);
+ temp1 = ((data->chassis_clear) << 7) & 0x80;
+ temp2 = w83792d_read_value(client,
+ W83792D_REG_CHASSIS_CLR) & 0x7f;
+ w83792d_write_value(client, W83792D_REG_CHASSIS_CLR, temp1 | temp2);
+
+ return count;
+}
+
+static DEVICE_ATTR(chassis_clear, S_IRUGO | S_IWUSR,
+ show_chassis_clear, store_chassis_clear);
+
+#define device_create_file_chassis_clear(client) \
+do { \
+device_create_file(&client->dev, &dev_attr_chassis_clear); \
+} while (0)
+
+
+
+/* For Smart Fan I / Thermal Cruise */
+static ssize_t
+show_thermal_cruise(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 w83792d_data *data = w83792d_update_device(dev);
+ return sprintf(buf, "%ld\n", (long)data->thermal_cruise[nr-1]);
+}
+
+static ssize_t
+store_thermal_cruise(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 - 1;
+ struct i2c_client *client = to_i2c_client(dev);
+ struct w83792d_data *data = i2c_get_clientdata(client);
+ u32 val;
+ u8 target_tmp=0, target_mask=0;
+
+ val = simple_strtoul(buf, NULL, 10);
+ target_tmp = val;
+ target_tmp = target_tmp & 0x7f;
+ target_mask = w83792d_read_value(client, W83792D_REG_THERMAL[nr]) & 0x80;
+ data->thermal_cruise[nr] = SENSORS_LIMIT(target_tmp, 0, 255);
+ w83792d_write_value(client, W83792D_REG_THERMAL[nr],
+ (data->thermal_cruise[nr]) | target_mask);
+
+ return count;
+}
+
+#define sysfs_thermal_cruise(offset) \
+static SENSOR_DEVICE_ATTR(thermal_cruise##offset, S_IRUGO | S_IWUSR, \
+ show_thermal_cruise, store_thermal_cruise, offset);
+
+sysfs_thermal_cruise(1);
+sysfs_thermal_cruise(2);
+sysfs_thermal_cruise(3);
+
+#define device_create_file_thermal_cruise(client, offset) \
+do { \
+device_create_file(&client->dev, \
+&sensor_dev_attr_thermal_cruise##offset.dev_attr); \
+} while (0)
+
+
+/* For Smart Fan I/Thermal Cruise and Smart Fan II */
+static ssize_t
+show_tolerance(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 w83792d_data *data = w83792d_update_device(dev);
+ return sprintf(buf, "%ld\n", (long)data->tolerance[nr-1]);
+}
+
+static ssize_t
+store_tolerance(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 - 1;
+ struct i2c_client *client = to_i2c_client(dev);
+ struct w83792d_data *data = i2c_get_clientdata(client);
+ u32 val;
+ u8 tol_tmp, tol_mask;
+
+ val = simple_strtoul(buf, NULL, 10);
+ tol_mask = w83792d_read_value(client,
+ W83792D_REG_TOLERANCE[nr]) & ((nr == 1) ? 0x0f : 0xf0);
+ tol_tmp = SENSORS_LIMIT(val, 0, 15);
+ tol_tmp &= 0x0f;
+ data->tolerance[nr] = tol_tmp;
+ if (nr == 1) {
+ tol_tmp <<= 4;
+ }
+ w83792d_write_value(client, W83792D_REG_TOLERANCE[nr],
+ tol_mask | tol_tmp);
+
+ return count;
+}
+
+#define sysfs_tolerance(offset) \
+static SENSOR_DEVICE_ATTR(tolerance##offset, S_IRUGO | S_IWUSR, \
+ show_tolerance, store_tolerance, offset);
+
+sysfs_tolerance(1);
+sysfs_tolerance(2);
+sysfs_tolerance(3);
+
+#define device_create_file_tolerance(client, offset) \
+do { \
+device_create_file(&client->dev, &sensor_dev_attr_tolerance##offset.dev_attr); \
+} while (0)
+
+
+/* For Smart Fan II */
+static ssize_t
+show_sf2_point(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct sensor_device_attribute_2 *sensor_attr = to_sensor_dev_attr_2(attr);
+ int nr = sensor_attr->nr;
+ int index = sensor_attr->index;
+ struct w83792d_data *data = w83792d_update_device(dev);
+ return sprintf(buf, "%ld\n", (long)data->sf2_points[index-1][nr-1]);
+}
+
+static ssize_t
+store_sf2_point(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct sensor_device_attribute_2 *sensor_attr = to_sensor_dev_attr_2(attr);
+ int nr = sensor_attr->nr - 1;
+ int index = sensor_attr->index - 1;
+ struct i2c_client *client = to_i2c_client(dev);
+ struct w83792d_data *data = i2c_get_clientdata(client);
+ u32 val;
+ u8 mask_tmp = 0;
+
+ val = simple_strtoul(buf, NULL, 10);
+ data->sf2_points[index][nr] = SENSORS_LIMIT(val, 0, 127);
+ mask_tmp = w83792d_read_value(client,
+ W83792D_REG_POINTS[index][nr]) & 0x80;
+ w83792d_write_value(client, W83792D_REG_POINTS[index][nr],
+ mask_tmp|data->sf2_points[index][nr]);
+
+ return count;
+}
+
+#define sysfs_sf2_point(offset, index) \
+static SENSOR_DEVICE_ATTR_2(sf2_point##offset##_fan##index, S_IRUGO | S_IWUSR, \
+ show_sf2_point, store_sf2_point, offset, index);
+
+sysfs_sf2_point(1, 1); /* Fan1 */
+sysfs_sf2_point(2, 1); /* Fan1 */
+sysfs_sf2_point(3, 1); /* Fan1 */
+sysfs_sf2_point(4, 1); /* Fan1 */
+sysfs_sf2_point(1, 2); /* Fan2 */
+sysfs_sf2_point(2, 2); /* Fan2 */
+sysfs_sf2_point(3, 2); /* Fan2 */
+sysfs_sf2_point(4, 2); /* Fan2 */
+sysfs_sf2_point(1, 3); /* Fan3 */
+sysfs_sf2_point(2, 3); /* Fan3 */
+sysfs_sf2_point(3, 3); /* Fan3 */
+sysfs_sf2_point(4, 3); /* Fan3 */
+
+#define device_create_file_sf2_point(client, offset, index) \
+do { \
+device_create_file(&client->dev, \
+&sensor_dev_attr_sf2_point##offset##_fan##index.dev_attr); \
+} while (0)
+
+
+static ssize_t
+show_sf2_level(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct sensor_device_attribute_2 *sensor_attr = to_sensor_dev_attr_2(attr);
+ int nr = sensor_attr->nr;
+ int index = sensor_attr->index;
+ struct w83792d_data *data = w83792d_update_device(dev);
+ return sprintf(buf, "%d\n",
+ (((data->sf2_levels[index-1][nr]) * 100) / 15));
+}
+
+static ssize_t
+store_sf2_level(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct sensor_device_attribute_2 *sensor_attr = to_sensor_dev_attr_2(attr);
+ int nr = sensor_attr->nr;
+ int index = sensor_attr->index - 1;
+ struct i2c_client *client = to_i2c_client(dev);
+ struct w83792d_data *data = i2c_get_clientdata(client);
+ u32 val;
+ u8 mask_tmp=0, level_tmp=0;
+
+ val = simple_strtoul(buf, NULL, 10);
+ data->sf2_levels[index][nr] = SENSORS_LIMIT((val * 15) / 100, 0, 15);
+ mask_tmp = w83792d_read_value(client, W83792D_REG_LEVELS[index][nr])
+ & ((nr==3) ? 0xf0 : 0x0f);
+ if (nr==3) {
+ level_tmp = data->sf2_levels[index][nr];
+ } else {
+ level_tmp = data->sf2_levels[index][nr] << 4;
+ }
+ w83792d_write_value(client, W83792D_REG_LEVELS[index][nr], level_tmp | mask_tmp);
+
+ return count;
+}
+
+#define sysfs_sf2_level(offset, index) \
+static SENSOR_DEVICE_ATTR_2(sf2_level##offset##_fan##index, S_IRUGO | S_IWUSR, \
+ show_sf2_level, store_sf2_level, offset, index);
+
+sysfs_sf2_level(1, 1); /* Fan1 */
+sysfs_sf2_level(2, 1); /* Fan1 */
+sysfs_sf2_level(3, 1); /* Fan1 */
+sysfs_sf2_level(1, 2); /* Fan2 */
+sysfs_sf2_level(2, 2); /* Fan2 */
+sysfs_sf2_level(3, 2); /* Fan2 */
+sysfs_sf2_level(1, 3); /* Fan3 */
+sysfs_sf2_level(2, 3); /* Fan3 */
+sysfs_sf2_level(3, 3); /* Fan3 */
+
+#define device_create_file_sf2_level(client, offset, index) \
+do { \
+device_create_file(&client->dev, \
+&sensor_dev_attr_sf2_level##offset##_fan##index.dev_attr); \
+} while (0)
+
+
+/* This function is called when:
+ * w83792d_driver is inserted (when this module is loaded), for each
+ available adapter
+ * when a new adapter is inserted (and w83792d_driver is still present) */
+static int
+w83792d_attach_adapter(struct i2c_adapter *adapter)
+{
+ if (!(adapter->class & I2C_CLASS_HWMON))
+ return 0;
+ return i2c_detect(adapter, &addr_data, w83792d_detect);
+}
+
+
+static int
+w83792d_create_subclient(struct i2c_adapter *adapter,
+ struct i2c_client *new_client, int addr,
+ struct i2c_client **sub_cli)
+{
+ int err;
+ struct i2c_client *sub_client;
+
+ (*sub_cli) = sub_client = kmalloc(sizeof(struct i2c_client), GFP_KERNEL);
+ if (!(sub_client)) {
+ return -ENOMEM;
+ }
+ memset(sub_client, 0x00, sizeof(struct i2c_client));
+ sub_client->addr = 0x48 + addr;
+ i2c_set_clientdata(sub_client, NULL);
+ sub_client->adapter = adapter;
+ sub_client->driver = &w83792d_driver;
+ sub_client->flags = 0;
+ strlcpy(sub_client->name, "w83792d subclient", I2C_NAME_SIZE);
+ if ((err = i2c_attach_client(sub_client))) {
+ dev_err(&new_client->dev, "subclient registration "
+ "at address 0x%x failed\n", sub_client->addr);
+ kfree(sub_client);
+ return err;
+ }
+ return 0;
+}
+
+
+static int
+w83792d_detect_subclients(struct i2c_adapter *adapter, int address, int kind,
+ struct i2c_client *new_client)
+{
+ int i, id, err;
+ u8 val;
+ struct w83792d_data *data = i2c_get_clientdata(new_client);
+
+ id = i2c_adapter_id(adapter);
+ if (force_subclients[0] == id && force_subclients[1] == address) {
+ for (i = 2; i <= 3; i++) {
+ if (force_subclients[i] < 0x48 ||
+ force_subclients[i] > 0x4f) {
+ dev_err(&new_client->dev, "invalid subclient "
+ "address %d; must be 0x48-0x4f\n",
+ force_subclients[i]);
+ err = -ENODEV;
+ goto ERROR_SC_0;
+ }
+ }
+ w83792d_write_value(new_client, W83792D_REG_I2C_SUBADDR,
+ (force_subclients[2] & 0x07) |
+ ((force_subclients[3] & 0x07) << 4));
+ }
+
+ val = w83792d_read_value(new_client, W83792D_REG_I2C_SUBADDR);
+ if (!(val & 0x08)) {
+ err = w83792d_create_subclient(adapter, new_client, val & 0x7,
+ &data->lm75[0]);
+ if (err < 0)
+ goto ERROR_SC_0;
+ }
+ if (!(val & 0x80)) {
+ if ((data->lm75[0] != NULL) &&
+ ((val & 0x7) == ((val >> 4) & 0x7))) {
+ dev_err(&new_client->dev, "duplicate addresses 0x%x, "
+ "use force_subclient\n", data->lm75[0]->addr);
+ err = -ENODEV;
+ goto ERROR_SC_1;
+ }
+ err = w83792d_create_subclient(adapter, new_client,
+ (val >> 4) & 0x7, &data->lm75[1]);
+ if (err < 0)
+ goto ERROR_SC_1;
+ }
+
+ return 0;
+
+/* Undo inits in case of errors */
+
+ERROR_SC_1:
+ if (data->lm75[0] != NULL) {
+ i2c_detach_client(data->lm75[0]);
+ kfree(data->lm75[0]);
+ }
+ERROR_SC_0:
+ return err;
+}
+
+
+static int
+w83792d_detect(struct i2c_adapter *adapter, int address, int kind)
+{
+ int i = 0, val1 = 0, val2;
+ struct i2c_client *new_client;
+ struct w83792d_data *data;
+ int err = 0;
+ const char *client_name = "";
+
+ if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) {
+ goto ERROR0;
+ }
+
+ /* OK. For now, we presume we have a valid client. We now create the
+ client structure, even though we cannot fill it completely yet.
+ But it allows us to access w83792d_{read,write}_value. */
+
+ if (!(data = kmalloc(sizeof(struct w83792d_data), GFP_KERNEL))) {
+ err = -ENOMEM;
+ goto ERROR0;
+ }
+ memset(data, 0, sizeof(struct w83792d_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 = &w83792d_driver;
+ new_client->flags = 0;
+
+ /* Now, we do the remaining detection. */
+
+ /* The w83792d may be stuck in some other bank than bank 0. This may
+ make reading other information impossible. Specify a force=... or
+ force_*=... parameter, and the Winbond will be reset to the right
+ bank. */
+ if (kind < 0) {
+ if (w83792d_read_value(new_client, W83792D_REG_CONFIG) & 0x80) {
+ dev_warn(&new_client->dev, "Detection failed at step "
+ "3\n");
+ goto ERROR1;
+ }
+ val1 = w83792d_read_value(new_client, W83792D_REG_BANK);
+ val2 = w83792d_read_value(new_client, W83792D_REG_CHIPMAN);
+ /* Check for Winbond ID if in bank 0 */
+ if (!(val1 & 0x07)) { /* is Bank0 */
+ if (((!(val1 & 0x80)) && (val2 != 0xa3)) ||
+ ((val1 & 0x80) && (val2 != 0x5c))) {
+ goto ERROR1;
+ }
+ }
+ /* If Winbond chip, address of chip and W83792D_REG_I2C_ADDR
+ should match */
+ if (w83792d_read_value(new_client,
+ W83792D_REG_I2C_ADDR) != address) {
+ dev_warn(&new_client->dev, "Detection failed "
+ "at step 5\n");
+ goto ERROR1;
+ }
+ }
+
+ /* We have either had a force parameter, or we have already detected the
+ Winbond. Put it now into bank 0 and Vendor ID High Byte */
+ w83792d_write_value(new_client,
+ W83792D_REG_BANK,
+ (w83792d_read_value(new_client,
+ W83792D_REG_BANK) & 0x78) | 0x80);
+
+ /* Determine the chip type. */
+ if (kind <= 0) {
+ /* get vendor ID */
+ val2 = w83792d_read_value(new_client, W83792D_REG_CHIPMAN);
+ if (val2 != 0x5c) { /* the vendor is NOT Winbond */
+ goto ERROR1;
+ }
+ val1 = w83792d_read_value(new_client, W83792D_REG_WCHIPID);
+ if (val1 == 0x7a && address >= 0x2c) {
+ kind = w83792d;
+ } else {
+ if (kind == 0)
+ dev_warn(&new_client->dev,
+ "w83792d: Ignoring 'force' parameter for"
+ " unknown chip at adapter %d, address"
+ " 0x%02x\n", i2c_adapter_id(adapter),
+ address);
+ goto ERROR1;
+ }
+ }
+
+ if (kind == w83792d) {
+ client_name = "w83792d";
+ } else {
+ dev_err(&new_client->dev, "w83792d: Internal error: unknown"
+ " kind (%d)?!?", kind);
+ goto ERROR1;
+ }
+
+ /* Fill in the remaining client fields and put into the global list */
+ strlcpy(new_client->name, client_name, I2C_NAME_SIZE);
+ data->type = kind;
+
+ data->valid = 0;
+ init_MUTEX(&data->update_lock);
+
+ /* Tell the I2C layer a new client has arrived */
+ if ((err = i2c_attach_client(new_client)))
+ goto ERROR1;
+
+ if ((err = w83792d_detect_subclients(adapter, address,
+ kind, new_client)))
+ goto ERROR2;
+
+ /* Initialize the chip */
+ w83792d_init_client(new_client);
+
+ /* A few vars need to be filled upon startup */
+ for (i = 1; i <= 7; i++) {
+ data->fan_min[i - 1] = w83792d_read_value(new_client,
+ W83792D_REG_FAN_MIN[i]);
+ }
+
+ /* Register sysfs hooks */
+ device_create_file_in(new_client, 0);
+ device_create_file_in(new_client, 1);
+ device_create_file_in(new_client, 2);
+ device_create_file_in(new_client, 3);
+ device_create_file_in(new_client, 4);
+ device_create_file_in(new_client, 5);
+ device_create_file_in(new_client, 6);
+ device_create_file_in(new_client, 7);
+ device_create_file_in(new_client, 8);
+
+ device_create_file_fan(new_client, 1);
+ device_create_file_fan(new_client, 2);
+ device_create_file_fan(new_client, 3);
+ device_create_file_fan(new_client, 4);
+ device_create_file_fan(new_client, 5);
+ device_create_file_fan(new_client, 6);
+ device_create_file_fan(new_client, 7);
+
+ device_create_file_temp1(new_client); /* Temp1 */
+ device_create_file_temp_add(new_client, 2); /* Temp2 */
+ device_create_file_temp_add(new_client, 3); /* Temp3 */
+
+ device_create_file_alarms(new_client);
+
+ device_create_file_pwm(new_client, 1);
+ device_create_file_pwm(new_client, 2);
+ device_create_file_pwm(new_client, 3);
+
+ device_create_file_pwmenable(new_client, 1);
+ device_create_file_pwmenable(new_client, 2);
+ device_create_file_pwmenable(new_client, 3);
+
+ device_create_file_pwm_mode(new_client, 1);
+ device_create_file_pwm_mode(new_client, 2);
+ device_create_file_pwm_mode(new_client, 3);
+
+ device_create_file_chassis(new_client);
+ device_create_file_chassis_clear(new_client);
+
+ device_create_file_thermal_cruise(new_client, 1);
+ device_create_file_thermal_cruise(new_client, 2);
+ device_create_file_thermal_cruise(new_client, 3);
+
+ device_create_file_tolerance(new_client, 1);
+ device_create_file_tolerance(new_client, 2);
+ device_create_file_tolerance(new_client, 3);
+
+ device_create_file_sf2_point(new_client, 1, 1); /* Fan1 */
+ device_create_file_sf2_point(new_client, 2, 1); /* Fan1 */
+ device_create_file_sf2_point(new_client, 3, 1); /* Fan1 */
+ device_create_file_sf2_point(new_client, 4, 1); /* Fan1 */
+ device_create_file_sf2_point(new_client, 1, 2); /* Fan2 */
+ device_create_file_sf2_point(new_client, 2, 2); /* Fan2 */
+ device_create_file_sf2_point(new_client, 3, 2); /* Fan2 */
+ device_create_file_sf2_point(new_client, 4, 2); /* Fan2 */
+ device_create_file_sf2_point(new_client, 1, 3); /* Fan3 */
+ device_create_file_sf2_point(new_client, 2, 3); /* Fan3 */
+ device_create_file_sf2_point(new_client, 3, 3); /* Fan3 */
+ device_create_file_sf2_point(new_client, 4, 3); /* Fan3 */
+
+ device_create_file_sf2_level(new_client, 1, 1); /* Fan1 */
+ device_create_file_sf2_level(new_client, 2, 1); /* Fan1 */
+ device_create_file_sf2_level(new_client, 3, 1); /* Fan1 */
+ device_create_file_sf2_level(new_client, 1, 2); /* Fan2 */
+ device_create_file_sf2_level(new_client, 2, 2); /* Fan2 */
+ device_create_file_sf2_level(new_client, 3, 2); /* Fan2 */
+ device_create_file_sf2_level(new_client, 1, 3); /* Fan3 */
+ device_create_file_sf2_level(new_client, 2, 3); /* Fan3 */
+ device_create_file_sf2_level(new_client, 3, 3); /* Fan3 */
+
+ return 0;
+
+ERROR2:
+ i2c_detach_client(new_client);
+ERROR1:
+ kfree(data);
+ERROR0:
+ return err;
+}
+
+static int
+w83792d_detach_client(struct i2c_client *client)
+{
+ int err;
+
+ if ((err = i2c_detach_client(client))) {
+ dev_err(&client->dev,
+ "Client deregistration failed, client not detached.\n");
+ return err;
+ }
+
+ if (i2c_get_clientdata(client)==NULL) {
+ /* subclients */
+ kfree(client);
+ } else {
+ /* main client */
+ kfree(i2c_get_clientdata(client));
+ }
+
+ return 0;
+}
+
+/* The SMBus locks itself, usually, but nothing may access the Winbond between
+ bank switches. ISA access must always be locked explicitly!
+ We ignore the W83792D BUSY flag at this moment - it could lead to deadlocks,
+ would slow down the W83792D access and should not be necessary.
+ There are some ugly typecasts here, but the good news is - they should
+ nowhere else be necessary! */
+static int
+w83792d_read_value(struct i2c_client *client, u8 reg)
+{
+ int res=0;
+ res = i2c_smbus_read_byte_data(client, reg);
+
+ return res;
+}
+
+static int
+w83792d_write_value(struct i2c_client *client, u8 reg, u8 value)
+{
+ i2c_smbus_write_byte_data(client, reg, value);
+ return 0;
+}
+
+/* Called when we have found a new W83792D. It should set limits, etc. */
+static void
+w83792d_init_client(struct i2c_client *client)
+{
+ u8 temp2_cfg, temp3_cfg, vid_in_b;
+
+ if (init) {
+ w83792d_write_value(client, W83792D_REG_CONFIG, 0x80);
+ }
+ /* Clear the bit6 of W83792D_REG_VID_IN_B(set it into 0):
+ W83792D_REG_VID_IN_B bit6 = 0: the high/low limit of
+ vin0/vin1 can be modified by user;
+ W83792D_REG_VID_IN_B bit6 = 1: the high/low limit of
+ vin0/vin1 auto-updated, can NOT be modified by user. */
+ vid_in_b = w83792d_read_value(client, W83792D_REG_VID_IN_B);
+ w83792d_write_value(client, W83792D_REG_VID_IN_B,
+ vid_in_b & 0xbf);
+
+ temp2_cfg = w83792d_read_value(client, W83792D_REG_TEMP2_CONFIG);
+ temp3_cfg = w83792d_read_value(client, W83792D_REG_TEMP3_CONFIG);
+ w83792d_write_value(client, W83792D_REG_TEMP2_CONFIG,
+ temp2_cfg & 0xe6);
+ w83792d_write_value(client, W83792D_REG_TEMP3_CONFIG,
+ temp3_cfg & 0xe6);
+
+ /* Start monitoring */
+ w83792d_write_value(client, W83792D_REG_CONFIG,
+ (w83792d_read_value(client,
+ W83792D_REG_CONFIG) & 0xf7)
+ | 0x01);
+}
+
+static struct w83792d_data *w83792d_update_device(struct device *dev)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct w83792d_data *data = i2c_get_clientdata(client);
+ int i, j;
+ u8 reg_array_tmp[4], pwm_array_tmp[7], reg_tmp;
+
+ down(&data->update_lock);
+
+ if (time_after
+ (jiffies - data->last_updated, (unsigned long) (HZ * 3))
+ || time_before(jiffies, data->last_updated) || !data->valid) {
+ dev_dbg(dev, "Starting device update\n");
+
+ /* Update the voltages measured value and limits */
+ for (i = 0; i < 9; i++) {
+ data->in[i] = w83792d_read_value(client,
+ W83792D_REG_IN[i]);
+ data->in_max[i] = w83792d_read_value(client,
+ W83792D_REG_IN_MAX[i]);
+ data->in_min[i] = w83792d_read_value(client,
+ W83792D_REG_IN_MIN[i]);
+ }
+ data->low_bits[0] = w83792d_read_value(client,
+ W83792D_REG_LOW_BITS1);
+ data->low_bits[1] = w83792d_read_value(client,
+ W83792D_REG_LOW_BITS2);
+ for (i = 0; i < 7; i++) {
+ /* Update the Fan measured value and limits */
+ data->fan[i] = w83792d_read_value(client,
+ W83792D_REG_FAN[i]);
+ data->fan_min[i] = w83792d_read_value(client,
+ W83792D_REG_FAN_MIN[i]);
+ /* Update the PWM/DC Value and PWM/DC flag */
+ pwm_array_tmp[i] = w83792d_read_value(client,
+ W83792D_REG_PWM[i]);
+ data->pwm[i] = pwm_array_tmp[i] & 0x0f;
+ data->pwm_mode[i] = (pwm_array_tmp[i] >> 7) & 0x01;
+ }
+
+ reg_tmp = w83792d_read_value(client, W83792D_REG_FAN_CFG);
+ data->pwmenable[0] = reg_tmp & 0x03;
+ data->pwmenable[1] = (reg_tmp>>2) & 0x03;
+ data->pwmenable[2] = (reg_tmp>>4) & 0x03;
+
+ for (i = 0; i < 3; i++) {
+ data->temp1[i] = w83792d_read_value(client,
+ W83792D_REG_TEMP1[i]);
+ }
+ for (i = 0; i < 2; i++) {
+ for (j = 0; j < 6; j++) {
+ data->temp_add[i][j] = w83792d_read_value(
+ client,W83792D_REG_TEMP_ADD[i][j]);
+ }
+ }
+
+ /* Update the Fan Divisor */
+ for (i = 0; i < 4; i++) {
+ reg_array_tmp[i] = w83792d_read_value(client,
+ W83792D_REG_FAN_DIV[i]);
+ }
+ data->fan_div[0] = reg_array_tmp[0] & 0x07;
+ data->fan_div[1] = (reg_array_tmp[0] >> 4) & 0x07;
+ data->fan_div[2] = reg_array_tmp[1] & 0x07;
+ data->fan_div[3] = (reg_array_tmp[1] >> 4) & 0x07;
+ data->fan_div[4] = reg_array_tmp[2] & 0x07;
+ data->fan_div[5] = (reg_array_tmp[2] >> 4) & 0x07;
+ data->fan_div[6] = reg_array_tmp[3] & 0x07;
+
+ /* Update the realtime status */
+ data->alarms = w83792d_read_value(client, W83792D_REG_ALARM1) +
+ (w83792d_read_value(client, W83792D_REG_ALARM2) << 8) +
+ (w83792d_read_value(client, W83792D_REG_ALARM3) << 16);
+
+ /* Update CaseOpen status and it's CLR_CHS. */
+ data->chassis = (w83792d_read_value(client,
+ W83792D_REG_CHASSIS) >> 5) & 0x01;
+ data->chassis_clear = (w83792d_read_value(client,
+ W83792D_REG_CHASSIS_CLR) >> 7) & 0x01;
+
+ /* Update Thermal Cruise/Smart Fan I target value */
+ for (i = 0; i < 3; i++) {
+ data->thermal_cruise[i] =
+ w83792d_read_value(client,
+ W83792D_REG_THERMAL[i]) & 0x7f;
+ }
+
+ /* Update Smart Fan I/II tolerance */
+ reg_tmp = w83792d_read_value(client, W83792D_REG_TOLERANCE[0]);
+ data->tolerance[0] = reg_tmp & 0x0f;
+ data->tolerance[1] = (reg_tmp >> 4) & 0x0f;
+ data->tolerance[2] = w83792d_read_value(client,
+ W83792D_REG_TOLERANCE[2]) & 0x0f;
+
+ /* Update Smart Fan II temperature points */
+ for (i = 0; i < 3; i++) {
+ for (j = 0; j < 4; j++) {
+ data->sf2_points[i][j] = w83792d_read_value(
+ client,W83792D_REG_POINTS[i][j]) & 0x7f;
+ }
+ }
+
+ /* Update Smart Fan II duty cycle levels */
+ for (i = 0; i < 3; i++) {
+ reg_tmp = w83792d_read_value(client,
+ W83792D_REG_LEVELS[i][0]);
+ data->sf2_levels[i][0] = reg_tmp & 0x0f;
+ data->sf2_levels[i][1] = (reg_tmp >> 4) & 0x0f;
+ reg_tmp = w83792d_read_value(client,
+ W83792D_REG_LEVELS[i][2]);
+ data->sf2_levels[i][2] = (reg_tmp >> 4) & 0x0f;
+ data->sf2_levels[i][3] = reg_tmp & 0x0f;
+ }
+
+ data->last_updated = jiffies;
+ data->valid = 1;
+ }
+
+ up(&data->update_lock);
+
+#ifdef DEBUG
+ w83792d_print_debug(data, dev);
+#endif
+
+ return data;
+}
+
+#ifdef DEBUG
+static void w83792d_print_debug(struct w83792d_data *data, struct device *dev)
+{
+ int i=0, j=0;
+ dev_dbg(dev, "==========The following is the debug message...========\n");
+ dev_dbg(dev, "9 set of Voltages: =====>\n");
+ for (i=0; i<9; i++) {
+ dev_dbg(dev, "vin[%d] is: 0x%x\n", i, data->in[i]);
+ dev_dbg(dev, "vin[%d] max is: 0x%x\n", i, data->in_max[i]);
+ dev_dbg(dev, "vin[%d] min is: 0x%x\n", i, data->in_min[i]);
+ }
+ dev_dbg(dev, "Low Bit1 is: 0x%x\n", data->low_bits[0]);
+ dev_dbg(dev, "Low Bit2 is: 0x%x\n", data->low_bits[1]);
+ dev_dbg(dev, "7 set of Fan Counts and Duty Cycles: =====>\n");
+ for (i=0; i<7; i++) {
+ dev_dbg(dev, "fan[%d] is: 0x%x\n", i, data->fan[i]);
+ dev_dbg(dev, "fan[%d] min is: 0x%x\n", i, data->fan_min[i]);
+ dev_dbg(dev, "pwm[%d] is: 0x%x\n", i, data->pwm[i]);
+ dev_dbg(dev, "pwm_mode[%d] is: 0x%x\n", i, data->pwm_mode[i]);
+ }
+ dev_dbg(dev, "3 set of Temperatures: =====>\n");
+ for (i=0; i<3; i++) {
+ dev_dbg(dev, "temp1[%d] is: 0x%x\n", i, data->temp1[i]);
+ }
+
+ for (i=0; i<2; i++) {
+ for (j=0; j<6; j++) {
+ dev_dbg(dev, "temp_add[%d][%d] is: 0x%x\n", i, j,
+ data->temp_add[i][j]);
+ }
+ }
+
+ for (i=0; i<7; i++) {
+ dev_dbg(dev, "fan_div[%d] is: 0x%x\n", i, data->fan_div[i]);
+ }
+ dev_dbg(dev, "==========End of the debug message...==================\n");
+ dev_dbg(dev, "\n");
+}
+#endif
+
+static int __init
+sensors_w83792d_init(void)
+{
+ return i2c_add_driver(&w83792d_driver);
+}
+
+static void __exit
+sensors_w83792d_exit(void)
+{
+ i2c_del_driver(&w83792d_driver);
+}
+
+MODULE_AUTHOR("Chunhao Huang @ Winbond <DZShen@Winbond.com.tw>");
+MODULE_DESCRIPTION("W83792AD/D driver for linux-2.6");
+MODULE_LICENSE("GPL");
+
+module_init(sensors_w83792d_init);
+module_exit(sensors_w83792d_exit);
+