Supports following chips:
Chip #vin #fanin #pwm #temp wchipid vendid i2c ISA
- w83791d 10 5 3 3 0x71 0x5ca3 yes no
+ w83791d 10 5 5 3 0x71 0x5ca3 yes no
The w83791d chip appears to be part way between the 83781d and the
83792d. Thus, this file is derived from both the w83792d.c and
#define NUMBER_OF_VIN 10
#define NUMBER_OF_FANIN 5
#define NUMBER_OF_TEMPIN 3
+#define NUMBER_OF_PWM 5
/* Addresses to scan */
-static unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, 0x2f, I2C_CLIENT_END };
+static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, 0x2f,
+ I2C_CLIENT_END };
/* Insmod parameters */
-I2C_CLIENT_INSMOD_1(w83791d);
-I2C_CLIENT_MODULE_PARM(force_subclients, "List of subclient addresses: "
+
+static unsigned short force_subclients[4];
+module_param_array(force_subclients, short, NULL, 0);
+MODULE_PARM_DESC(force_subclients, "List of subclient addresses: "
"{bus, clientaddr, subclientaddr1, subclientaddr2}");
static int reset;
0xBD, /* FAN 5 Count Low Limit in DataSheet */
};
+static const u8 W83791D_REG_PWM[NUMBER_OF_PWM] = {
+ 0x81, /* PWM 1 duty cycle register in DataSheet */
+ 0x83, /* PWM 2 duty cycle register in DataSheet */
+ 0x94, /* PWM 3 duty cycle register in DataSheet */
+ 0xA0, /* PWM 4 duty cycle register in DataSheet */
+ 0xA1, /* PWM 5 duty cycle register in DataSheet */
+};
+
+static const u8 W83791D_REG_TEMP_TARGET[3] = {
+ 0x85, /* PWM 1 target temperature for temp 1 */
+ 0x86, /* PWM 2 target temperature for temp 2 */
+ 0x96, /* PWM 3 target temperature for temp 3 */
+};
+
+static const u8 W83791D_REG_TEMP_TOL[2] = {
+ 0x87, /* PWM 1/2 temperature tolerance */
+ 0x97, /* PWM 3 temperature tolerance */
+};
+
static const u8 W83791D_REG_FAN_CFG[2] = {
0x84, /* FAN 1/2 configuration */
0x95, /* FAN 3 configuration */
0xA3, /* BEEP Control Register 3 */
};
+#define W83791D_REG_GPIO 0x15
#define W83791D_REG_CONFIG 0x40
#define W83791D_REG_VID_FANDIV 0x47
#define W83791D_REG_DID_VID4 0x49
(val) < 0 ? ((val) - 250) / 500 * 128 : \
((val) + 250) / 500 * 128)
+/* for thermal cruise target temp, 7-bits, LSB = 1 degree Celsius */
+#define TARGET_TEMP_TO_REG(val) ((val) < 0 ? 0 : \
+ (val) >= 127000 ? 127 : \
+ ((val) + 500) / 1000)
+
+/* for thermal cruise temp tolerance, 4-bits, LSB = 1 degree Celsius */
+#define TOL_TEMP_TO_REG(val) ((val) < 0 ? 0 : \
+ (val) >= 15000 ? 15 : \
+ ((val) + 500) / 1000)
#define BEEP_MASK_TO_REG(val) ((val) & 0xffffff)
#define BEEP_MASK_FROM_REG(val) ((val) & 0xffffff)
static u8 div_to_reg(int nr, long val)
{
int i;
- int max;
- /* first three fan's divisor max out at 8, rest max out at 128 */
- max = (nr < 3) ? 8 : 128;
- val = SENSORS_LIMIT(val, 1, max) >> 1;
+ /* fan divisors max out at 128 */
+ val = SENSORS_LIMIT(val, 1, 128) >> 1;
for (i = 0; i < 7; i++) {
if (val == 0)
break;
}
struct w83791d_data {
- struct i2c_client client;
struct device *hwmon_dev;
struct mutex update_lock;
two sensors with three values
(cur, over, hyst) */
+ /* PWMs */
+ u8 pwm[5]; /* pwm duty cycle */
+ u8 pwm_enable[3]; /* pwm enable status for fan 1-3
+ (fan 4-5 only support manual mode) */
+
+ u8 temp_target[3]; /* pwm 1-3 target temperature */
+ u8 temp_tolerance[3]; /* pwm 1-3 temperature tolerance */
+
/* Misc */
u32 alarms; /* realtime status register encoding,combined */
u8 beep_enable; /* Global beep enable */
u8 vrm; /* hwmon-vid */
};
-static int w83791d_attach_adapter(struct i2c_adapter *adapter);
-static int w83791d_detect(struct i2c_adapter *adapter, int address, int kind);
-static int w83791d_detach_client(struct i2c_client *client);
+static int w83791d_probe(struct i2c_client *client,
+ const struct i2c_device_id *id);
+static int w83791d_detect(struct i2c_client *client,
+ struct i2c_board_info *info);
+static int w83791d_remove(struct i2c_client *client);
static int w83791d_read(struct i2c_client *client, u8 register);
static int w83791d_write(struct i2c_client *client, u8 register, u8 value);
static void w83791d_init_client(struct i2c_client *client);
+static const struct i2c_device_id w83791d_id[] = {
+ { "w83791d", 0 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, w83791d_id);
+
static struct i2c_driver w83791d_driver = {
+ .class = I2C_CLASS_HWMON,
.driver = {
.name = "w83791d",
},
- .attach_adapter = w83791d_attach_adapter,
- .detach_client = w83791d_detach_client,
+ .probe = w83791d_probe,
+ .remove = w83791d_remove,
+ .id_table = w83791d_id,
+ .detect = w83791d_detect,
+ .address_list = normal_i2c,
};
/* following are the sysfs callback functions */
unsigned long min;
u8 tmp_fan_div;
u8 fan_div_reg;
+ u8 vbat_reg;
int indx = 0;
u8 keep_mask = 0;
u8 new_shift = 0;
w83791d_write(client, W83791D_REG_FAN_DIV[indx],
fan_div_reg | tmp_fan_div);
+ /* Bit 2 of fans 0-2 is stored in the vbat register (bits 5-7) */
+ if (nr < 3) {
+ keep_mask = ~(1 << (nr + 5));
+ vbat_reg = w83791d_read(client, W83791D_REG_VBAT)
+ & keep_mask;
+ tmp_fan_div = (data->fan_div[nr] << (3 + nr)) & ~keep_mask;
+ w83791d_write(client, W83791D_REG_VBAT,
+ vbat_reg | tmp_fan_div);
+ }
+
/* Restore fan_min */
data->fan_min[nr] = fan_to_reg(min, DIV_FROM_REG(data->fan_div[nr]));
w83791d_write(client, W83791D_REG_FAN_MIN[nr], data->fan_min[nr]);
SENSOR_ATTR(fan5_alarm, S_IRUGO, show_alarm, NULL, 22),
};
+/* read/write PWMs */
+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 w83791d_data *data = w83791d_update_device(dev);
+ return sprintf(buf, "%u\n", data->pwm[nr]);
+}
+
+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);
+ struct i2c_client *client = to_i2c_client(dev);
+ struct w83791d_data *data = i2c_get_clientdata(client);
+ int nr = sensor_attr->index;
+ unsigned long val;
+
+ if (strict_strtoul(buf, 10, &val))
+ return -EINVAL;
+
+ mutex_lock(&data->update_lock);
+ data->pwm[nr] = SENSORS_LIMIT(val, 0, 255);
+ w83791d_write(client, W83791D_REG_PWM[nr], data->pwm[nr]);
+ mutex_unlock(&data->update_lock);
+ return count;
+}
+
+static struct sensor_device_attribute sda_pwm[] = {
+ SENSOR_ATTR(pwm1, S_IWUSR | S_IRUGO,
+ show_pwm, store_pwm, 0),
+ SENSOR_ATTR(pwm2, S_IWUSR | S_IRUGO,
+ show_pwm, store_pwm, 1),
+ SENSOR_ATTR(pwm3, S_IWUSR | S_IRUGO,
+ show_pwm, store_pwm, 2),
+ SENSOR_ATTR(pwm4, S_IWUSR | S_IRUGO,
+ show_pwm, store_pwm, 3),
+ SENSOR_ATTR(pwm5, S_IWUSR | S_IRUGO,
+ show_pwm, store_pwm, 4),
+};
+
+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;
+ struct w83791d_data *data = w83791d_update_device(dev);
+ return sprintf(buf, "%u\n", data->pwm_enable[nr] + 1);
+}
+
+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);
+ struct i2c_client *client = to_i2c_client(dev);
+ struct w83791d_data *data = i2c_get_clientdata(client);
+ int nr = sensor_attr->index;
+ unsigned long val;
+ u8 reg_cfg_tmp;
+ u8 reg_idx = 0;
+ u8 val_shift = 0;
+ u8 keep_mask = 0;
+
+ int ret = strict_strtoul(buf, 10, &val);
+
+ if (ret || val < 1 || val > 3)
+ return -EINVAL;
+
+ mutex_lock(&data->update_lock);
+ data->pwm_enable[nr] = val - 1;
+ switch (nr) {
+ case 0:
+ reg_idx = 0;
+ val_shift = 2;
+ keep_mask = 0xf3;
+ break;
+ case 1:
+ reg_idx = 0;
+ val_shift = 4;
+ keep_mask = 0xcf;
+ break;
+ case 2:
+ reg_idx = 1;
+ val_shift = 2;
+ keep_mask = 0xf3;
+ break;
+ }
+
+ reg_cfg_tmp = w83791d_read(client, W83791D_REG_FAN_CFG[reg_idx]);
+ reg_cfg_tmp = (reg_cfg_tmp & keep_mask) |
+ data->pwm_enable[nr] << val_shift;
+
+ w83791d_write(client, W83791D_REG_FAN_CFG[reg_idx], reg_cfg_tmp);
+ mutex_unlock(&data->update_lock);
+
+ return count;
+}
+static struct sensor_device_attribute sda_pwmenable[] = {
+ SENSOR_ATTR(pwm1_enable, S_IWUSR | S_IRUGO,
+ show_pwmenable, store_pwmenable, 0),
+ SENSOR_ATTR(pwm2_enable, S_IWUSR | S_IRUGO,
+ show_pwmenable, store_pwmenable, 1),
+ SENSOR_ATTR(pwm3_enable, S_IWUSR | S_IRUGO,
+ show_pwmenable, store_pwmenable, 2),
+};
+
+/* For Smart Fan I / Thermal Cruise */
+static ssize_t show_temp_target(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
+ struct w83791d_data *data = w83791d_update_device(dev);
+ int nr = sensor_attr->index;
+ return sprintf(buf, "%d\n", TEMP1_FROM_REG(data->temp_target[nr]));
+}
+
+static ssize_t store_temp_target(struct device *dev,
+ struct device_attribute *attr, const char *buf, size_t count)
+{
+ struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
+ struct i2c_client *client = to_i2c_client(dev);
+ struct w83791d_data *data = i2c_get_clientdata(client);
+ int nr = sensor_attr->index;
+ unsigned long val;
+ u8 target_mask;
+
+ if (strict_strtoul(buf, 10, &val))
+ return -EINVAL;
+
+ mutex_lock(&data->update_lock);
+ data->temp_target[nr] = TARGET_TEMP_TO_REG(val);
+ target_mask = w83791d_read(client,
+ W83791D_REG_TEMP_TARGET[nr]) & 0x80;
+ w83791d_write(client, W83791D_REG_TEMP_TARGET[nr],
+ data->temp_target[nr] | target_mask);
+ mutex_unlock(&data->update_lock);
+ return count;
+}
+
+static struct sensor_device_attribute sda_temp_target[] = {
+ SENSOR_ATTR(temp1_target, S_IWUSR | S_IRUGO,
+ show_temp_target, store_temp_target, 0),
+ SENSOR_ATTR(temp2_target, S_IWUSR | S_IRUGO,
+ show_temp_target, store_temp_target, 1),
+ SENSOR_ATTR(temp3_target, S_IWUSR | S_IRUGO,
+ show_temp_target, store_temp_target, 2),
+};
+
+static ssize_t show_temp_tolerance(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
+ struct w83791d_data *data = w83791d_update_device(dev);
+ int nr = sensor_attr->index;
+ return sprintf(buf, "%d\n", TEMP1_FROM_REG(data->temp_tolerance[nr]));
+}
+
+static ssize_t store_temp_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);
+ struct i2c_client *client = to_i2c_client(dev);
+ struct w83791d_data *data = i2c_get_clientdata(client);
+ int nr = sensor_attr->index;
+ unsigned long val;
+ u8 target_mask;
+ u8 reg_idx = 0;
+ u8 val_shift = 0;
+ u8 keep_mask = 0;
+
+ if (strict_strtoul(buf, 10, &val))
+ return -EINVAL;
+
+ switch (nr) {
+ case 0:
+ reg_idx = 0;
+ val_shift = 0;
+ keep_mask = 0xf0;
+ break;
+ case 1:
+ reg_idx = 0;
+ val_shift = 4;
+ keep_mask = 0x0f;
+ break;
+ case 2:
+ reg_idx = 1;
+ val_shift = 0;
+ keep_mask = 0xf0;
+ break;
+ }
+
+ mutex_lock(&data->update_lock);
+ data->temp_tolerance[nr] = TOL_TEMP_TO_REG(val);
+ target_mask = w83791d_read(client,
+ W83791D_REG_TEMP_TOL[reg_idx]) & keep_mask;
+ w83791d_write(client, W83791D_REG_TEMP_TOL[reg_idx],
+ (data->temp_tolerance[nr] << val_shift) | target_mask);
+ mutex_unlock(&data->update_lock);
+ return count;
+}
+
+static struct sensor_device_attribute sda_temp_tolerance[] = {
+ SENSOR_ATTR(temp1_tolerance, S_IWUSR | S_IRUGO,
+ show_temp_tolerance, store_temp_tolerance, 0),
+ SENSOR_ATTR(temp2_tolerance, S_IWUSR | S_IRUGO,
+ show_temp_tolerance, store_temp_tolerance, 1),
+ SENSOR_ATTR(temp3_tolerance, S_IWUSR | S_IRUGO,
+ show_temp_tolerance, store_temp_tolerance, 2),
+};
+
/* read/write the temperature1, includes measured value and limits */
static ssize_t show_temp1(struct device *dev, struct device_attribute *devattr,
char *buf)
FAN_UNIT_ATTRS(0),
FAN_UNIT_ATTRS(1),
FAN_UNIT_ATTRS(2),
- FAN_UNIT_ATTRS(3),
- FAN_UNIT_ATTRS(4),
TEMP_UNIT_ATTRS(0),
TEMP_UNIT_ATTRS(1),
TEMP_UNIT_ATTRS(2),
&sda_beep_ctrl[1].dev_attr.attr,
&dev_attr_cpu0_vid.attr,
&dev_attr_vrm.attr,
+ &sda_pwm[0].dev_attr.attr,
+ &sda_pwm[1].dev_attr.attr,
+ &sda_pwm[2].dev_attr.attr,
+ &sda_pwmenable[0].dev_attr.attr,
+ &sda_pwmenable[1].dev_attr.attr,
+ &sda_pwmenable[2].dev_attr.attr,
+ &sda_temp_target[0].dev_attr.attr,
+ &sda_temp_target[1].dev_attr.attr,
+ &sda_temp_target[2].dev_attr.attr,
+ &sda_temp_tolerance[0].dev_attr.attr,
+ &sda_temp_tolerance[1].dev_attr.attr,
+ &sda_temp_tolerance[2].dev_attr.attr,
NULL
};
.attrs = w83791d_attributes,
};
-/* This function is called when:
- * w83791d_driver is inserted (when this module is loaded), for each
- available adapter
- * when a new adapter is inserted (and w83791d_driver is still present) */
-static int w83791d_attach_adapter(struct i2c_adapter *adapter)
-{
- if (!(adapter->class & I2C_CLASS_HWMON))
- return 0;
- return i2c_probe(adapter, &addr_data, w83791d_detect);
-}
-
-
-static int w83791d_create_subclient(struct i2c_adapter *adapter,
- struct i2c_client *client, int addr,
- struct i2c_client **sub_cli)
-{
- int err;
- struct i2c_client *sub_client;
-
- (*sub_cli) = sub_client =
- kzalloc(sizeof(struct i2c_client), GFP_KERNEL);
- if (!(sub_client)) {
- return -ENOMEM;
- }
- sub_client->addr = 0x48 + addr;
- i2c_set_clientdata(sub_client, NULL);
- sub_client->adapter = adapter;
- sub_client->driver = &w83791d_driver;
- strlcpy(sub_client->name, "w83791d subclient", I2C_NAME_SIZE);
- if ((err = i2c_attach_client(sub_client))) {
- dev_err(&client->dev, "subclient registration "
- "at address 0x%x failed\n", sub_client->addr);
- kfree(sub_client);
- return err;
- }
- return 0;
-}
+/* Separate group of attributes for fan/pwm 4-5. Their pins can also be
+ in use for GPIO in which case their sysfs-interface should not be made
+ available */
+static struct attribute *w83791d_attributes_fanpwm45[] = {
+ FAN_UNIT_ATTRS(3),
+ FAN_UNIT_ATTRS(4),
+ &sda_pwm[3].dev_attr.attr,
+ &sda_pwm[4].dev_attr.attr,
+ NULL
+};
+static const struct attribute_group w83791d_group_fanpwm45 = {
+ .attrs = w83791d_attributes_fanpwm45,
+};
-static int w83791d_detect_subclients(struct i2c_adapter *adapter, int address,
- int kind, struct i2c_client *client)
+static int w83791d_detect_subclients(struct i2c_client *client)
{
+ struct i2c_adapter *adapter = client->adapter;
struct w83791d_data *data = i2c_get_clientdata(client);
+ int address = client->addr;
int i, id, err;
u8 val;
val = w83791d_read(client, W83791D_REG_I2C_SUBADDR);
if (!(val & 0x08)) {
- err = w83791d_create_subclient(adapter, client,
- val & 0x7, &data->lm75[0]);
- if (err < 0)
- goto error_sc_0;
+ data->lm75[0] = i2c_new_dummy(adapter, 0x48 + (val & 0x7));
}
if (!(val & 0x80)) {
if ((data->lm75[0] != NULL) &&
err = -ENODEV;
goto error_sc_1;
}
- err = w83791d_create_subclient(adapter, client,
- (val >> 4) & 0x7, &data->lm75[1]);
- if (err < 0)
- goto error_sc_1;
+ data->lm75[1] = i2c_new_dummy(adapter,
+ 0x48 + ((val >> 4) & 0x7));
}
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]);
- }
+ if (data->lm75[0] != NULL)
+ i2c_unregister_device(data->lm75[0]);
error_sc_0:
return err;
}
-static int w83791d_detect(struct i2c_adapter *adapter, int address, int kind)
+/* Return 0 if detection is successful, -ENODEV otherwise */
+static int w83791d_detect(struct i2c_client *client,
+ struct i2c_board_info *info)
{
- struct i2c_client *client;
- struct device *dev;
- struct w83791d_data *data;
- int i, val1, val2;
- int err = 0;
- const char *client_name = "";
+ struct i2c_adapter *adapter = client->adapter;
+ int val1, val2;
+ unsigned short address = client->addr;
if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) {
- goto error0;
+ return -ENODEV;
}
- /* 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 w83791d_{read,write}_value. */
- if (!(data = kzalloc(sizeof(struct w83791d_data), GFP_KERNEL))) {
- err = -ENOMEM;
- goto error0;
- }
+ if (w83791d_read(client, W83791D_REG_CONFIG) & 0x80)
+ return -ENODEV;
- client = &data->client;
- dev = &client->dev;
- i2c_set_clientdata(client, data);
- client->addr = address;
- client->adapter = adapter;
- client->driver = &w83791d_driver;
- mutex_init(&data->update_lock);
-
- /* Now, we do the remaining detection. */
-
- /* The w83791d may be stuck in some other bank than bank 0. This may
- make reading other information impossible. Specify a force=...
- parameter, and the Winbond will be reset to the right bank. */
- if (kind < 0) {
- if (w83791d_read(client, W83791D_REG_CONFIG) & 0x80) {
- dev_dbg(dev, "Detection failed at step 1\n");
- goto error1;
- }
- val1 = w83791d_read(client, W83791D_REG_BANK);
- val2 = w83791d_read(client, W83791D_REG_CHIPMAN);
- /* Check for Winbond ID if in bank 0 */
- if (!(val1 & 0x07)) {
- /* yes it is Bank0 */
- if (((!(val1 & 0x80)) && (val2 != 0xa3)) ||
- ((val1 & 0x80) && (val2 != 0x5c))) {
- dev_dbg(dev, "Detection failed at step 2\n");
- goto error1;
- }
- }
- /* If Winbond chip, address of chip and W83791D_REG_I2C_ADDR
- should match */
- if (w83791d_read(client, W83791D_REG_I2C_ADDR) != address) {
- dev_dbg(dev, "Detection failed at step 3\n");
- goto error1;
+ val1 = w83791d_read(client, W83791D_REG_BANK);
+ val2 = w83791d_read(client, W83791D_REG_CHIPMAN);
+ /* Check for Winbond ID if in bank 0 */
+ if (!(val1 & 0x07)) {
+ if ((!(val1 & 0x80) && val2 != 0xa3) ||
+ ( (val1 & 0x80) && val2 != 0x5c)) {
+ return -ENODEV;
}
}
+ /* If Winbond chip, address of chip and W83791D_REG_I2C_ADDR
+ should match */
+ if (w83791d_read(client, W83791D_REG_I2C_ADDR) != address)
+ return -ENODEV;
- /* We either have a force parameter or we have reason to
- believe it is a Winbond chip. Either way, we want bank 0 and
- Vendor ID high byte */
+ /* We want bank 0 and Vendor ID high byte */
val1 = w83791d_read(client, W83791D_REG_BANK) & 0x78;
w83791d_write(client, W83791D_REG_BANK, val1 | 0x80);
/* Verify it is a Winbond w83791d */
- if (kind <= 0) {
- /* get vendor ID */
- val2 = w83791d_read(client, W83791D_REG_CHIPMAN);
- if (val2 != 0x5c) { /* the vendor is NOT Winbond */
- dev_dbg(dev, "Detection failed at step 4\n");
- goto error1;
- }
- val1 = w83791d_read(client, W83791D_REG_WCHIPID);
- if (val1 == 0x71) {
- kind = w83791d;
- } else {
- if (kind == 0)
- dev_warn(dev,
- "w83791d: Ignoring 'force' parameter "
- "for unknown chip at adapter %d, "
- "address 0x%02x\n",
- i2c_adapter_id(adapter), address);
- goto error1;
- }
- }
+ val1 = w83791d_read(client, W83791D_REG_WCHIPID);
+ val2 = w83791d_read(client, W83791D_REG_CHIPMAN);
+ if (val1 != 0x71 || val2 != 0x5c)
+ return -ENODEV;
- if (kind == w83791d) {
- client_name = "w83791d";
- } else {
- dev_err(dev, "w83791d: Internal error: unknown kind (%d)?!?\n",
- kind);
- goto error1;
- }
+ strlcpy(info->type, "w83791d", I2C_NAME_SIZE);
+
+ return 0;
+}
+
+static int w83791d_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct w83791d_data *data;
+ struct device *dev = &client->dev;
+ int i, err;
+ u8 has_fanpwm45;
#ifdef DEBUG
+ int val1;
val1 = w83791d_read(client, W83791D_REG_DID_VID4);
dev_dbg(dev, "Device ID version: %d.%d (0x%02x)\n",
(val1 >> 5) & 0x07, (val1 >> 1) & 0x0f, val1);
#endif
- /* Fill in the remaining client fields and put into the global list */
- strlcpy(client->name, client_name, I2C_NAME_SIZE);
+ data = kzalloc(sizeof(struct w83791d_data), GFP_KERNEL);
+ if (!data) {
+ err = -ENOMEM;
+ goto error0;
+ }
- /* Tell the I2C layer a new client has arrived */
- if ((err = i2c_attach_client(client)))
- goto error1;
+ i2c_set_clientdata(client, data);
+ mutex_init(&data->update_lock);
- if ((err = w83791d_detect_subclients(adapter, address, kind, client)))
- goto error2;
+ err = w83791d_detect_subclients(client);
+ if (err)
+ goto error1;
/* Initialize the chip */
w83791d_init_client(client);
if ((err = sysfs_create_group(&client->dev.kobj, &w83791d_group)))
goto error3;
+ /* Check if pins of fan/pwm 4-5 are in use as GPIO */
+ has_fanpwm45 = w83791d_read(client, W83791D_REG_GPIO) & 0x10;
+ if (has_fanpwm45) {
+ err = sysfs_create_group(&client->dev.kobj,
+ &w83791d_group_fanpwm45);
+ if (err)
+ goto error4;
+ }
+
/* Everything is ready, now register the working device */
data->hwmon_dev = hwmon_device_register(dev);
if (IS_ERR(data->hwmon_dev)) {
err = PTR_ERR(data->hwmon_dev);
- goto error4;
+ goto error5;
}
return 0;
+error5:
+ if (has_fanpwm45)
+ sysfs_remove_group(&client->dev.kobj, &w83791d_group_fanpwm45);
error4:
sysfs_remove_group(&client->dev.kobj, &w83791d_group);
error3:
- if (data->lm75[0] != NULL) {
- i2c_detach_client(data->lm75[0]);
- kfree(data->lm75[0]);
- }
- if (data->lm75[1] != NULL) {
- i2c_detach_client(data->lm75[1]);
- kfree(data->lm75[1]);
- }
-error2:
- i2c_detach_client(client);
+ if (data->lm75[0] != NULL)
+ i2c_unregister_device(data->lm75[0]);
+ if (data->lm75[1] != NULL)
+ i2c_unregister_device(data->lm75[1]);
error1:
kfree(data);
error0:
return err;
}
-static int w83791d_detach_client(struct i2c_client *client)
+static int w83791d_remove(struct i2c_client *client)
{
struct w83791d_data *data = i2c_get_clientdata(client);
- int err;
-
- /* main client */
- if (data) {
- hwmon_device_unregister(data->hwmon_dev);
- sysfs_remove_group(&client->dev.kobj, &w83791d_group);
- }
- if ((err = i2c_detach_client(client)))
- return err;
+ hwmon_device_unregister(data->hwmon_dev);
+ sysfs_remove_group(&client->dev.kobj, &w83791d_group);
- /* main client */
- if (data)
- kfree(data);
- /* subclient */
- else
- kfree(client);
+ if (data->lm75[0] != NULL)
+ i2c_unregister_device(data->lm75[0]);
+ if (data->lm75[1] != NULL)
+ i2c_unregister_device(data->lm75[1]);
+ kfree(data);
return 0;
}
struct w83791d_data *data = i2c_get_clientdata(client);
int i, j;
u8 reg_array_tmp[3];
+ u8 vbat_reg;
mutex_lock(&data->update_lock);
data->fan_div[3] = reg_array_tmp[2] & 0x07;
data->fan_div[4] = (reg_array_tmp[2] >> 4) & 0x07;
+ /* The fan divisor for fans 0-2 get bit 2 from
+ bits 5-7 respectively of vbat register */
+ vbat_reg = w83791d_read(client, W83791D_REG_VBAT);
+ for (i = 0; i < 3; i++)
+ data->fan_div[i] |= (vbat_reg >> (3 + i)) & 0x04;
+
+ /* Update PWM duty cycle */
+ for (i = 0; i < NUMBER_OF_PWM; i++) {
+ data->pwm[i] = w83791d_read(client,
+ W83791D_REG_PWM[i]);
+ }
+
+ /* Update PWM enable status */
+ for (i = 0; i < 2; i++) {
+ reg_array_tmp[i] = w83791d_read(client,
+ W83791D_REG_FAN_CFG[i]);
+ }
+ data->pwm_enable[0] = (reg_array_tmp[0] >> 2) & 0x03;
+ data->pwm_enable[1] = (reg_array_tmp[0] >> 4) & 0x03;
+ data->pwm_enable[2] = (reg_array_tmp[1] >> 2) & 0x03;
+
+ /* Update PWM target temperature */
+ for (i = 0; i < 3; i++) {
+ data->temp_target[i] = w83791d_read(client,
+ W83791D_REG_TEMP_TARGET[i]) & 0x7f;
+ }
+
+ /* Update PWM temperature tolerance */
+ for (i = 0; i < 2; i++) {
+ reg_array_tmp[i] = w83791d_read(client,
+ W83791D_REG_TEMP_TOL[i]);
+ }
+ data->temp_tolerance[0] = reg_array_tmp[0] & 0x0f;
+ data->temp_tolerance[1] = (reg_array_tmp[0] >> 4) & 0x0f;
+ data->temp_tolerance[2] = reg_array_tmp[1] & 0x0f;
+
/* Update the first temperature sensor */
for (i = 0; i < 3; i++) {
data->temp1[i] = w83791d_read(client,
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff