| /* |
| * lm63.c - driver for the National Semiconductor LM63 temperature sensor |
| * with integrated fan control |
| * Copyright (C) 2004-2006 Jean Delvare <khali@linux-fr.org> |
| * Based on the lm90 driver. |
| * |
| * The LM63 is a sensor chip made by National Semiconductor. It measures |
| * two temperatures (its own and one external one) and the speed of one |
| * fan, those speed it can additionally control. Complete datasheet can be |
| * obtained from National's website at: |
| * http://www.national.com/pf/LM/LM63.html |
| * |
| * The LM63 is basically an LM86 with fan speed monitoring and control |
| * capabilities added. It misses some of the LM86 features though: |
| * - No low limit for local temperature. |
| * - No critical limit for local temperature. |
| * - Critical limit for remote temperature can be changed only once. We |
| * will consider that the critical limit is read-only. |
| * |
| * The datasheet isn't very clear about what the tachometer reading is. |
| * I had a explanation from National Semiconductor though. The two lower |
| * bits of the read value have to be masked out. The value is still 16 bit |
| * in width. |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| */ |
| |
| #include <linux/module.h> |
| #include <linux/init.h> |
| #include <linux/slab.h> |
| #include <linux/jiffies.h> |
| #include <linux/i2c.h> |
| #include <linux/hwmon-sysfs.h> |
| #include <linux/hwmon.h> |
| #include <linux/err.h> |
| #include <linux/mutex.h> |
| |
| /* |
| * Addresses to scan |
| * Address is fully defined internally and cannot be changed. |
| */ |
| |
| static unsigned short normal_i2c[] = { 0x4c, I2C_CLIENT_END }; |
| |
| /* |
| * Insmod parameters |
| */ |
| |
| I2C_CLIENT_INSMOD_1(lm63); |
| |
| /* |
| * The LM63 registers |
| */ |
| |
| #define LM63_REG_CONFIG1 0x03 |
| #define LM63_REG_CONFIG2 0xBF |
| #define LM63_REG_CONFIG_FAN 0x4A |
| |
| #define LM63_REG_TACH_COUNT_MSB 0x47 |
| #define LM63_REG_TACH_COUNT_LSB 0x46 |
| #define LM63_REG_TACH_LIMIT_MSB 0x49 |
| #define LM63_REG_TACH_LIMIT_LSB 0x48 |
| |
| #define LM63_REG_PWM_VALUE 0x4C |
| #define LM63_REG_PWM_FREQ 0x4D |
| |
| #define LM63_REG_LOCAL_TEMP 0x00 |
| #define LM63_REG_LOCAL_HIGH 0x05 |
| |
| #define LM63_REG_REMOTE_TEMP_MSB 0x01 |
| #define LM63_REG_REMOTE_TEMP_LSB 0x10 |
| #define LM63_REG_REMOTE_OFFSET_MSB 0x11 |
| #define LM63_REG_REMOTE_OFFSET_LSB 0x12 |
| #define LM63_REG_REMOTE_HIGH_MSB 0x07 |
| #define LM63_REG_REMOTE_HIGH_LSB 0x13 |
| #define LM63_REG_REMOTE_LOW_MSB 0x08 |
| #define LM63_REG_REMOTE_LOW_LSB 0x14 |
| #define LM63_REG_REMOTE_TCRIT 0x19 |
| #define LM63_REG_REMOTE_TCRIT_HYST 0x21 |
| |
| #define LM63_REG_ALERT_STATUS 0x02 |
| #define LM63_REG_ALERT_MASK 0x16 |
| |
| #define LM63_REG_MAN_ID 0xFE |
| #define LM63_REG_CHIP_ID 0xFF |
| |
| /* |
| * Conversions and various macros |
| * For tachometer counts, the LM63 uses 16-bit values. |
| * For local temperature and high limit, remote critical limit and hysteresis |
| * value, it uses signed 8-bit values with LSB = 1 degree Celsius. |
| * For remote temperature, low and high limits, it uses signed 11-bit values |
| * with LSB = 0.125 degree Celsius, left-justified in 16-bit registers. |
| */ |
| |
| #define FAN_FROM_REG(reg) ((reg) == 0xFFFC || (reg) == 0 ? 0 : \ |
| 5400000 / (reg)) |
| #define FAN_TO_REG(val) ((val) <= 82 ? 0xFFFC : \ |
| (5400000 / (val)) & 0xFFFC) |
| #define TEMP8_FROM_REG(reg) ((reg) * 1000) |
| #define TEMP8_TO_REG(val) ((val) <= -128000 ? -128 : \ |
| (val) >= 127000 ? 127 : \ |
| (val) < 0 ? ((val) - 500) / 1000 : \ |
| ((val) + 500) / 1000) |
| #define TEMP11_FROM_REG(reg) ((reg) / 32 * 125) |
| #define TEMP11_TO_REG(val) ((val) <= -128000 ? 0x8000 : \ |
| (val) >= 127875 ? 0x7FE0 : \ |
| (val) < 0 ? ((val) - 62) / 125 * 32 : \ |
| ((val) + 62) / 125 * 32) |
| #define HYST_TO_REG(val) ((val) <= 0 ? 0 : \ |
| (val) >= 127000 ? 127 : \ |
| ((val) + 500) / 1000) |
| |
| /* |
| * Functions declaration |
| */ |
| |
| static int lm63_attach_adapter(struct i2c_adapter *adapter); |
| static int lm63_detach_client(struct i2c_client *client); |
| |
| static struct lm63_data *lm63_update_device(struct device *dev); |
| |
| static int lm63_detect(struct i2c_adapter *adapter, int address, int kind); |
| static void lm63_init_client(struct i2c_client *client); |
| |
| /* |
| * Driver data (common to all clients) |
| */ |
| |
| static struct i2c_driver lm63_driver = { |
| .driver = { |
| .name = "lm63", |
| }, |
| .attach_adapter = lm63_attach_adapter, |
| .detach_client = lm63_detach_client, |
| }; |
| |
| /* |
| * Client data (each client gets its own) |
| */ |
| |
| struct lm63_data { |
| struct i2c_client client; |
| struct class_device *class_dev; |
| struct mutex update_lock; |
| char valid; /* zero until following fields are valid */ |
| unsigned long last_updated; /* in jiffies */ |
| |
| /* registers values */ |
| u8 config, config_fan; |
| u16 fan[2]; /* 0: input |
| 1: low limit */ |
| u8 pwm1_freq; |
| u8 pwm1_value; |
| s8 temp8[3]; /* 0: local input |
| 1: local high limit |
| 2: remote critical limit */ |
| s16 temp11[3]; /* 0: remote input |
| 1: remote low limit |
| 2: remote high limit */ |
| u8 temp2_crit_hyst; |
| u8 alarms; |
| }; |
| |
| /* |
| * Sysfs callback functions and files |
| */ |
| |
| static ssize_t show_fan(struct device *dev, struct device_attribute *devattr, |
| char *buf) |
| { |
| struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); |
| struct lm63_data *data = lm63_update_device(dev); |
| return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[attr->index])); |
| } |
| |
| static ssize_t set_fan(struct device *dev, struct device_attribute *dummy, |
| const char *buf, size_t count) |
| { |
| struct i2c_client *client = to_i2c_client(dev); |
| struct lm63_data *data = i2c_get_clientdata(client); |
| unsigned long val = simple_strtoul(buf, NULL, 10); |
| |
| mutex_lock(&data->update_lock); |
| data->fan[1] = FAN_TO_REG(val); |
| i2c_smbus_write_byte_data(client, LM63_REG_TACH_LIMIT_LSB, |
| data->fan[1] & 0xFF); |
| i2c_smbus_write_byte_data(client, LM63_REG_TACH_LIMIT_MSB, |
| data->fan[1] >> 8); |
| mutex_unlock(&data->update_lock); |
| return count; |
| } |
| |
| static ssize_t show_pwm1(struct device *dev, struct device_attribute *dummy, |
| char *buf) |
| { |
| struct lm63_data *data = lm63_update_device(dev); |
| return sprintf(buf, "%d\n", data->pwm1_value >= 2 * data->pwm1_freq ? |
| 255 : (data->pwm1_value * 255 + data->pwm1_freq) / |
| (2 * data->pwm1_freq)); |
| } |
| |
| static ssize_t set_pwm1(struct device *dev, struct device_attribute *dummy, |
| const char *buf, size_t count) |
| { |
| struct i2c_client *client = to_i2c_client(dev); |
| struct lm63_data *data = i2c_get_clientdata(client); |
| unsigned long val; |
| |
| if (!(data->config_fan & 0x20)) /* register is read-only */ |
| return -EPERM; |
| |
| val = simple_strtoul(buf, NULL, 10); |
| mutex_lock(&data->update_lock); |
| data->pwm1_value = val <= 0 ? 0 : |
| val >= 255 ? 2 * data->pwm1_freq : |
| (val * data->pwm1_freq * 2 + 127) / 255; |
| i2c_smbus_write_byte_data(client, LM63_REG_PWM_VALUE, data->pwm1_value); |
| mutex_unlock(&data->update_lock); |
| return count; |
| } |
| |
| static ssize_t show_pwm1_enable(struct device *dev, struct device_attribute *dummy, |
| char *buf) |
| { |
| struct lm63_data *data = lm63_update_device(dev); |
| return sprintf(buf, "%d\n", data->config_fan & 0x20 ? 1 : 2); |
| } |
| |
| static ssize_t show_temp8(struct device *dev, struct device_attribute *devattr, |
| char *buf) |
| { |
| struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); |
| struct lm63_data *data = lm63_update_device(dev); |
| return sprintf(buf, "%d\n", TEMP8_FROM_REG(data->temp8[attr->index])); |
| } |
| |
| static ssize_t set_temp8(struct device *dev, struct device_attribute *dummy, |
| const char *buf, size_t count) |
| { |
| struct i2c_client *client = to_i2c_client(dev); |
| struct lm63_data *data = i2c_get_clientdata(client); |
| long val = simple_strtol(buf, NULL, 10); |
| |
| mutex_lock(&data->update_lock); |
| data->temp8[1] = TEMP8_TO_REG(val); |
| i2c_smbus_write_byte_data(client, LM63_REG_LOCAL_HIGH, data->temp8[1]); |
| mutex_unlock(&data->update_lock); |
| return count; |
| } |
| |
| static ssize_t show_temp11(struct device *dev, struct device_attribute *devattr, |
| char *buf) |
| { |
| struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); |
| struct lm63_data *data = lm63_update_device(dev); |
| return sprintf(buf, "%d\n", TEMP11_FROM_REG(data->temp11[attr->index])); |
| } |
| |
| static ssize_t set_temp11(struct device *dev, struct device_attribute *devattr, |
| const char *buf, size_t count) |
| { |
| static const u8 reg[4] = { |
| LM63_REG_REMOTE_LOW_MSB, |
| LM63_REG_REMOTE_LOW_LSB, |
| LM63_REG_REMOTE_HIGH_MSB, |
| LM63_REG_REMOTE_HIGH_LSB, |
| }; |
| |
| struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); |
| struct i2c_client *client = to_i2c_client(dev); |
| struct lm63_data *data = i2c_get_clientdata(client); |
| long val = simple_strtol(buf, NULL, 10); |
| int nr = attr->index; |
| |
| mutex_lock(&data->update_lock); |
| data->temp11[nr] = TEMP11_TO_REG(val); |
| i2c_smbus_write_byte_data(client, reg[(nr - 1) * 2], |
| data->temp11[nr] >> 8); |
| i2c_smbus_write_byte_data(client, reg[(nr - 1) * 2 + 1], |
| data->temp11[nr] & 0xff); |
| mutex_unlock(&data->update_lock); |
| return count; |
| } |
| |
| /* Hysteresis register holds a relative value, while we want to present |
| an absolute to user-space */ |
| static ssize_t show_temp2_crit_hyst(struct device *dev, struct device_attribute *dummy, |
| char *buf) |
| { |
| struct lm63_data *data = lm63_update_device(dev); |
| return sprintf(buf, "%d\n", TEMP8_FROM_REG(data->temp8[2]) |
| - TEMP8_FROM_REG(data->temp2_crit_hyst)); |
| } |
| |
| /* And now the other way around, user-space provides an absolute |
| hysteresis value and we have to store a relative one */ |
| static ssize_t set_temp2_crit_hyst(struct device *dev, struct device_attribute *dummy, |
| const char *buf, size_t count) |
| { |
| struct i2c_client *client = to_i2c_client(dev); |
| struct lm63_data *data = i2c_get_clientdata(client); |
| long val = simple_strtol(buf, NULL, 10); |
| long hyst; |
| |
| mutex_lock(&data->update_lock); |
| hyst = TEMP8_FROM_REG(data->temp8[2]) - val; |
| i2c_smbus_write_byte_data(client, LM63_REG_REMOTE_TCRIT_HYST, |
| HYST_TO_REG(hyst)); |
| mutex_unlock(&data->update_lock); |
| return count; |
| } |
| |
| static ssize_t show_alarms(struct device *dev, struct device_attribute *dummy, |
| char *buf) |
| { |
| struct lm63_data *data = lm63_update_device(dev); |
| return sprintf(buf, "%u\n", data->alarms); |
| } |
| |
| static ssize_t show_alarm(struct device *dev, struct device_attribute *devattr, |
| char *buf) |
| { |
| struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); |
| struct lm63_data *data = lm63_update_device(dev); |
| int bitnr = attr->index; |
| |
| return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1); |
| } |
| |
| static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 0); |
| static SENSOR_DEVICE_ATTR(fan1_min, S_IWUSR | S_IRUGO, show_fan, |
| set_fan, 1); |
| |
| static DEVICE_ATTR(pwm1, S_IWUSR | S_IRUGO, show_pwm1, set_pwm1); |
| static DEVICE_ATTR(pwm1_enable, S_IRUGO, show_pwm1_enable, NULL); |
| |
| static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_temp8, NULL, 0); |
| static SENSOR_DEVICE_ATTR(temp1_max, S_IWUSR | S_IRUGO, show_temp8, |
| set_temp8, 1); |
| |
| static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, show_temp11, NULL, 0); |
| static SENSOR_DEVICE_ATTR(temp2_min, S_IWUSR | S_IRUGO, show_temp11, |
| set_temp11, 1); |
| static SENSOR_DEVICE_ATTR(temp2_max, S_IWUSR | S_IRUGO, show_temp11, |
| set_temp11, 2); |
| static SENSOR_DEVICE_ATTR(temp2_crit, S_IRUGO, show_temp8, NULL, 2); |
| static DEVICE_ATTR(temp2_crit_hyst, S_IWUSR | S_IRUGO, show_temp2_crit_hyst, |
| set_temp2_crit_hyst); |
| |
| /* Individual alarm files */ |
| static SENSOR_DEVICE_ATTR(fan1_min_alarm, S_IRUGO, show_alarm, NULL, 0); |
| static SENSOR_DEVICE_ATTR(temp2_crit_alarm, S_IRUGO, show_alarm, NULL, 1); |
| static SENSOR_DEVICE_ATTR(temp2_input_fault, S_IRUGO, show_alarm, NULL, 2); |
| static SENSOR_DEVICE_ATTR(temp2_min_alarm, S_IRUGO, show_alarm, NULL, 3); |
| static SENSOR_DEVICE_ATTR(temp2_max_alarm, S_IRUGO, show_alarm, NULL, 4); |
| static SENSOR_DEVICE_ATTR(temp1_max_alarm, S_IRUGO, show_alarm, NULL, 6); |
| /* Raw alarm file for compatibility */ |
| static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL); |
| |
| /* |
| * Real code |
| */ |
| |
| static int lm63_attach_adapter(struct i2c_adapter *adapter) |
| { |
| if (!(adapter->class & I2C_CLASS_HWMON)) |
| return 0; |
| return i2c_probe(adapter, &addr_data, lm63_detect); |
| } |
| |
| /* |
| * The following function does more than just detection. If detection |
| * succeeds, it also registers the new chip. |
| */ |
| static int lm63_detect(struct i2c_adapter *adapter, int address, int kind) |
| { |
| struct i2c_client *new_client; |
| struct lm63_data *data; |
| int err = 0; |
| |
| if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) |
| goto exit; |
| |
| if (!(data = kzalloc(sizeof(struct lm63_data), GFP_KERNEL))) { |
| err = -ENOMEM; |
| goto exit; |
| } |
| |
| /* The common I2C client data is placed right before the |
| LM63-specific data. */ |
| new_client = &data->client; |
| i2c_set_clientdata(new_client, data); |
| new_client->addr = address; |
| new_client->adapter = adapter; |
| new_client->driver = &lm63_driver; |
| new_client->flags = 0; |
| |
| /* Default to an LM63 if forced */ |
| if (kind == 0) |
| kind = lm63; |
| |
| if (kind < 0) { /* must identify */ |
| u8 man_id, chip_id, reg_config1, reg_config2; |
| u8 reg_alert_status, reg_alert_mask; |
| |
| man_id = i2c_smbus_read_byte_data(new_client, |
| LM63_REG_MAN_ID); |
| chip_id = i2c_smbus_read_byte_data(new_client, |
| LM63_REG_CHIP_ID); |
| reg_config1 = i2c_smbus_read_byte_data(new_client, |
| LM63_REG_CONFIG1); |
| reg_config2 = i2c_smbus_read_byte_data(new_client, |
| LM63_REG_CONFIG2); |
| reg_alert_status = i2c_smbus_read_byte_data(new_client, |
| LM63_REG_ALERT_STATUS); |
| reg_alert_mask = i2c_smbus_read_byte_data(new_client, |
| LM63_REG_ALERT_MASK); |
| |
| if (man_id == 0x01 /* National Semiconductor */ |
| && chip_id == 0x41 /* LM63 */ |
| && (reg_config1 & 0x18) == 0x00 |
| && (reg_config2 & 0xF8) == 0x00 |
| && (reg_alert_status & 0x20) == 0x00 |
| && (reg_alert_mask & 0xA4) == 0xA4) { |
| kind = lm63; |
| } else { /* failed */ |
| dev_dbg(&adapter->dev, "Unsupported chip " |
| "(man_id=0x%02X, chip_id=0x%02X).\n", |
| man_id, chip_id); |
| goto exit_free; |
| } |
| } |
| |
| strlcpy(new_client->name, "lm63", I2C_NAME_SIZE); |
| data->valid = 0; |
| mutex_init(&data->update_lock); |
| |
| /* Tell the I2C layer a new client has arrived */ |
| if ((err = i2c_attach_client(new_client))) |
| goto exit_free; |
| |
| /* Initialize the LM63 chip */ |
| lm63_init_client(new_client); |
| |
| /* Register sysfs hooks */ |
| data->class_dev = hwmon_device_register(&new_client->dev); |
| if (IS_ERR(data->class_dev)) { |
| err = PTR_ERR(data->class_dev); |
| goto exit_detach; |
| } |
| |
| if (data->config & 0x04) { /* tachometer enabled */ |
| device_create_file(&new_client->dev, |
| &sensor_dev_attr_fan1_input.dev_attr); |
| device_create_file(&new_client->dev, |
| &sensor_dev_attr_fan1_min.dev_attr); |
| device_create_file(&new_client->dev, |
| &sensor_dev_attr_fan1_min_alarm.dev_attr); |
| } |
| device_create_file(&new_client->dev, &dev_attr_pwm1); |
| device_create_file(&new_client->dev, &dev_attr_pwm1_enable); |
| device_create_file(&new_client->dev, |
| &sensor_dev_attr_temp1_input.dev_attr); |
| device_create_file(&new_client->dev, |
| &sensor_dev_attr_temp2_input.dev_attr); |
| device_create_file(&new_client->dev, |
| &sensor_dev_attr_temp2_min.dev_attr); |
| device_create_file(&new_client->dev, |
| &sensor_dev_attr_temp1_max.dev_attr); |
| device_create_file(&new_client->dev, |
| &sensor_dev_attr_temp2_max.dev_attr); |
| device_create_file(&new_client->dev, |
| &sensor_dev_attr_temp2_crit.dev_attr); |
| device_create_file(&new_client->dev, &dev_attr_temp2_crit_hyst); |
| |
| device_create_file(&new_client->dev, |
| &sensor_dev_attr_temp2_input_fault.dev_attr); |
| device_create_file(&new_client->dev, |
| &sensor_dev_attr_temp2_min_alarm.dev_attr); |
| device_create_file(&new_client->dev, |
| &sensor_dev_attr_temp1_max_alarm.dev_attr); |
| device_create_file(&new_client->dev, |
| &sensor_dev_attr_temp2_max_alarm.dev_attr); |
| device_create_file(&new_client->dev, |
| &sensor_dev_attr_temp2_crit_alarm.dev_attr); |
| device_create_file(&new_client->dev, &dev_attr_alarms); |
| |
| return 0; |
| |
| exit_detach: |
| i2c_detach_client(new_client); |
| exit_free: |
| kfree(data); |
| exit: |
| return err; |
| } |
| |
| /* Idealy we shouldn't have to initialize anything, since the BIOS |
| should have taken care of everything */ |
| static void lm63_init_client(struct i2c_client *client) |
| { |
| struct lm63_data *data = i2c_get_clientdata(client); |
| |
| data->config = i2c_smbus_read_byte_data(client, LM63_REG_CONFIG1); |
| data->config_fan = i2c_smbus_read_byte_data(client, |
| LM63_REG_CONFIG_FAN); |
| |
| /* Start converting if needed */ |
| if (data->config & 0x40) { /* standby */ |
| dev_dbg(&client->dev, "Switching to operational mode"); |
| data->config &= 0xA7; |
| i2c_smbus_write_byte_data(client, LM63_REG_CONFIG1, |
| data->config); |
| } |
| |
| /* We may need pwm1_freq before ever updating the client data */ |
| data->pwm1_freq = i2c_smbus_read_byte_data(client, LM63_REG_PWM_FREQ); |
| if (data->pwm1_freq == 0) |
| data->pwm1_freq = 1; |
| |
| /* Show some debug info about the LM63 configuration */ |
| dev_dbg(&client->dev, "Alert/tach pin configured for %s\n", |
| (data->config & 0x04) ? "tachometer input" : |
| "alert output"); |
| dev_dbg(&client->dev, "PWM clock %s kHz, output frequency %u Hz\n", |
| (data->config_fan & 0x08) ? "1.4" : "360", |
| ((data->config_fan & 0x08) ? 700 : 180000) / data->pwm1_freq); |
| dev_dbg(&client->dev, "PWM output active %s, %s mode\n", |
| (data->config_fan & 0x10) ? "low" : "high", |
| (data->config_fan & 0x20) ? "manual" : "auto"); |
| } |
| |
| static int lm63_detach_client(struct i2c_client *client) |
| { |
| struct lm63_data *data = i2c_get_clientdata(client); |
| int err; |
| |
| hwmon_device_unregister(data->class_dev); |
| |
| if ((err = i2c_detach_client(client))) |
| return err; |
| |
| kfree(data); |
| return 0; |
| } |
| |
| static struct lm63_data *lm63_update_device(struct device *dev) |
| { |
| struct i2c_client *client = to_i2c_client(dev); |
| struct lm63_data *data = i2c_get_clientdata(client); |
| |
| mutex_lock(&data->update_lock); |
| |
| if (time_after(jiffies, data->last_updated + HZ) || !data->valid) { |
| if (data->config & 0x04) { /* tachometer enabled */ |
| /* order matters for fan1_input */ |
| data->fan[0] = i2c_smbus_read_byte_data(client, |
| LM63_REG_TACH_COUNT_LSB) & 0xFC; |
| data->fan[0] |= i2c_smbus_read_byte_data(client, |
| LM63_REG_TACH_COUNT_MSB) << 8; |
| data->fan[1] = (i2c_smbus_read_byte_data(client, |
| LM63_REG_TACH_LIMIT_LSB) & 0xFC) |
| | (i2c_smbus_read_byte_data(client, |
| LM63_REG_TACH_LIMIT_MSB) << 8); |
| } |
| |
| data->pwm1_freq = i2c_smbus_read_byte_data(client, |
| LM63_REG_PWM_FREQ); |
| if (data->pwm1_freq == 0) |
| data->pwm1_freq = 1; |
| data->pwm1_value = i2c_smbus_read_byte_data(client, |
| LM63_REG_PWM_VALUE); |
| |
| data->temp8[0] = i2c_smbus_read_byte_data(client, |
| LM63_REG_LOCAL_TEMP); |
| data->temp8[1] = i2c_smbus_read_byte_data(client, |
| LM63_REG_LOCAL_HIGH); |
| |
| /* order matters for temp2_input */ |
| data->temp11[0] = i2c_smbus_read_byte_data(client, |
| LM63_REG_REMOTE_TEMP_MSB) << 8; |
| data->temp11[0] |= i2c_smbus_read_byte_data(client, |
| LM63_REG_REMOTE_TEMP_LSB); |
| data->temp11[1] = (i2c_smbus_read_byte_data(client, |
| LM63_REG_REMOTE_LOW_MSB) << 8) |
| | i2c_smbus_read_byte_data(client, |
| LM63_REG_REMOTE_LOW_LSB); |
| data->temp11[2] = (i2c_smbus_read_byte_data(client, |
| LM63_REG_REMOTE_HIGH_MSB) << 8) |
| | i2c_smbus_read_byte_data(client, |
| LM63_REG_REMOTE_HIGH_LSB); |
| data->temp8[2] = i2c_smbus_read_byte_data(client, |
| LM63_REG_REMOTE_TCRIT); |
| data->temp2_crit_hyst = i2c_smbus_read_byte_data(client, |
| LM63_REG_REMOTE_TCRIT_HYST); |
| |
| data->alarms = i2c_smbus_read_byte_data(client, |
| LM63_REG_ALERT_STATUS) & 0x7F; |
| |
| data->last_updated = jiffies; |
| data->valid = 1; |
| } |
| |
| mutex_unlock(&data->update_lock); |
| |
| return data; |
| } |
| |
| static int __init sensors_lm63_init(void) |
| { |
| return i2c_add_driver(&lm63_driver); |
| } |
| |
| static void __exit sensors_lm63_exit(void) |
| { |
| i2c_del_driver(&lm63_driver); |
| } |
| |
| MODULE_AUTHOR("Jean Delvare <khali@linux-fr.org>"); |
| MODULE_DESCRIPTION("LM63 driver"); |
| MODULE_LICENSE("GPL"); |
| |
| module_init(sensors_lm63_init); |
| module_exit(sensors_lm63_exit); |