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drivers/hwmon/lm63.c
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/* * lm63.c - driver for the National Semiconductor LM63 temperature sensor * with integrated fan control |
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* Copyright (C) 2004-2008 Jean Delvare <khali@linux-fr.org> |
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* 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. */ |
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#include <linux/module.h> #include <linux/init.h> #include <linux/slab.h> #include <linux/jiffies.h> #include <linux/i2c.h> |
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#include <linux/hwmon-sysfs.h> |
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#include <linux/hwmon.h> #include <linux/err.h> |
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#include <linux/mutex.h> |
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#include <linux/sysfs.h> |
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#include <linux/types.h> |
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/* * Addresses to scan |
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* Address is fully defined internally and cannot be changed except for * LM64 which has one pin dedicated to address selection. * LM63 and LM96163 have address 0x4c. * LM64 can have address 0x18 or 0x4e. |
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*/ |
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static const unsigned short normal_i2c[] = { 0x18, 0x4c, 0x4e, I2C_CLIENT_END }; |
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/* |
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* The LM63 registers */ #define LM63_REG_CONFIG1 0x03 |
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#define LM63_REG_CONVRATE 0x04 |
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#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 |
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#define LM96163_REG_TRUTHERM 0x30 |
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#define LM96163_REG_REMOTE_TEMP_U_MSB 0x31 #define LM96163_REG_REMOTE_TEMP_U_LSB 0x32 |
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#define LM96163_REG_CONFIG_ENHANCED 0x45 |
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#define LM63_MAX_CONVRATE 9 #define LM63_MAX_CONVRATE_HZ 32 #define LM96163_MAX_CONVRATE_HZ 26 |
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/* * Conversions and various macros * For tachometer counts, the LM63 uses 16-bit values. * For local temperature and high limit, remote critical limit and hysteresis |
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* value, it uses signed 8-bit values with LSB = 1 degree Celsius. |
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* For remote temperature, low and high limits, it uses signed 11-bit values |
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* with LSB = 0.125 degree Celsius, left-justified in 16-bit registers. |
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* For LM64 the actual remote diode temperature is 16 degree Celsius higher * than the register reading. Remote temperature setpoints have to be * adapted accordingly. |
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*/ #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) |
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#define TEMP8U_TO_REG(val) ((val) <= 0 ? 0 : \ (val) >= 255000 ? 255 : \ ((val) + 500) / 1000) |
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#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) |
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#define TEMP11U_TO_REG(val) ((val) <= 0 ? 0 : \ (val) >= 255875 ? 0xFFE0 : \ ((val) + 62) / 125 * 32) |
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#define HYST_TO_REG(val) ((val) <= 0 ? 0 : \ (val) >= 127000 ? 127 : \ ((val) + 500) / 1000) |
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#define UPDATE_INTERVAL(max, rate) \ ((1000 << (LM63_MAX_CONVRATE - (rate))) / (max)) |
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/* * Functions declaration */ |
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static int lm63_probe(struct i2c_client *client, const struct i2c_device_id *id); static int lm63_remove(struct i2c_client *client); |
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static struct lm63_data *lm63_update_device(struct device *dev); |
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static int lm63_detect(struct i2c_client *client, struct i2c_board_info *info); |
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static void lm63_init_client(struct i2c_client *client); |
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enum chips { lm63, lm64, lm96163 }; |
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/* * Driver data (common to all clients) */ |
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static const struct i2c_device_id lm63_id[] = { |
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{ "lm63", lm63 }, { "lm64", lm64 }, |
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{ "lm96163", lm96163 }, |
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{ } }; MODULE_DEVICE_TABLE(i2c, lm63_id); |
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static struct i2c_driver lm63_driver = { |
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.class = I2C_CLASS_HWMON, |
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.driver = { |
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.name = "lm63", }, |
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.probe = lm63_probe, .remove = lm63_remove, .id_table = lm63_id, .detect = lm63_detect, |
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.address_list = normal_i2c, |
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}; /* * Client data (each client gets its own) */ struct lm63_data { |
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struct device *hwmon_dev; |
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struct mutex update_lock; |
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char valid; /* zero until following fields are valid */ unsigned long last_updated; /* in jiffies */ |
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enum chips kind; |
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int temp2_offset; |
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|
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int update_interval; /* in milliseconds */ int max_convrate_hz; |
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/* registers values */ u8 config, config_fan; |
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u16 fan[2]; /* 0: input 1: low limit */ |
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u8 pwm1_freq; u8 pwm1_value; |
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s8 temp8[3]; /* 0: local input 1: local high limit 2: remote critical limit */ |
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s16 temp11[4]; /* 0: remote input |
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1: remote low limit |
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2: remote high limit 3: remote offset */ |
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u16 temp11u; /* remote input (unsigned) */ |
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u8 temp2_crit_hyst; u8 alarms; |
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bool pwm_highres; |
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bool remote_unsigned; /* true if unsigned remote upper limits */ |
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bool trutherm; |
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}; |
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static inline int temp8_from_reg(struct lm63_data *data, int nr) { if (data->remote_unsigned) return TEMP8_FROM_REG((u8)data->temp8[nr]); return TEMP8_FROM_REG(data->temp8[nr]); } |
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/* * Sysfs callback functions and files */ |
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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 ", FAN_FROM_REG(data->fan[attr->index])); |
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} |
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static ssize_t set_fan(struct device *dev, struct device_attribute *dummy, const char *buf, size_t count) |
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{ struct i2c_client *client = to_i2c_client(dev); struct lm63_data *data = i2c_get_clientdata(client); |
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unsigned long val; int err; err = kstrtoul(buf, 10, &val); if (err) return err; |
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|
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mutex_lock(&data->update_lock); |
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data->fan[1] = FAN_TO_REG(val); |
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i2c_smbus_write_byte_data(client, LM63_REG_TACH_LIMIT_LSB, |
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data->fan[1] & 0xFF); |
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i2c_smbus_write_byte_data(client, LM63_REG_TACH_LIMIT_MSB, |
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data->fan[1] >> 8); |
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mutex_unlock(&data->update_lock); |
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return count; } |
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static ssize_t show_pwm1(struct device *dev, struct device_attribute *dummy, char *buf) |
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{ struct lm63_data *data = lm63_update_device(dev); |
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int pwm; if (data->pwm_highres) pwm = data->pwm1_value; else pwm = data->pwm1_value >= 2 * data->pwm1_freq ? |
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255 : (data->pwm1_value * 255 + data->pwm1_freq) / |
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(2 * data->pwm1_freq); return sprintf(buf, "%d ", pwm); |
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} |
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static ssize_t set_pwm1(struct device *dev, struct device_attribute *dummy, const char *buf, size_t count) |
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{ struct i2c_client *client = to_i2c_client(dev); struct lm63_data *data = i2c_get_clientdata(client); unsigned long val; |
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int err; |
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if (!(data->config_fan & 0x20)) /* register is read-only */ return -EPERM; |
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err = kstrtoul(buf, 10, &val); if (err) return err; |
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val = SENSORS_LIMIT(val, 0, 255); |
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mutex_lock(&data->update_lock); |
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data->pwm1_value = data->pwm_highres ? val : |
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(val * data->pwm1_freq * 2 + 127) / 255; i2c_smbus_write_byte_data(client, LM63_REG_PWM_VALUE, data->pwm1_value); |
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mutex_unlock(&data->update_lock); |
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return count; } |
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static ssize_t show_pwm1_enable(struct device *dev, struct device_attribute *dummy, char *buf) |
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{ struct lm63_data *data = lm63_update_device(dev); return sprintf(buf, "%d ", data->config_fan & 0x20 ? 1 : 2); } |
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/* * There are 8bit registers for both local(temp1) and remote(temp2) sensor. * For remote sensor registers temp2_offset has to be considered, * for local sensor it must not. * So we need separate 8bit accessors for local and remote sensor. */ static ssize_t show_local_temp8(struct device *dev, struct device_attribute *devattr, char *buf) |
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{ struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); struct lm63_data *data = lm63_update_device(dev); return sprintf(buf, "%d ", TEMP8_FROM_REG(data->temp8[attr->index])); |
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} |
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static ssize_t show_remote_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); |
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return sprintf(buf, "%d ", temp8_from_reg(data, attr->index) |
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+ data->temp2_offset); } |
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static ssize_t set_temp8(struct device *dev, struct device_attribute *devattr, const char *buf, size_t count) |
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{ |
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struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); |
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struct i2c_client *client = to_i2c_client(dev); struct lm63_data *data = i2c_get_clientdata(client); |
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int nr = attr->index; int reg = nr == 2 ? LM63_REG_REMOTE_TCRIT : LM63_REG_LOCAL_HIGH; |
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long val; int err; |
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int temp; |
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err = kstrtol(buf, 10, &val); if (err) return err; |
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|
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mutex_lock(&data->update_lock); |
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if (nr == 2) { if (data->remote_unsigned) temp = TEMP8U_TO_REG(val - data->temp2_offset); else temp = TEMP8_TO_REG(val - data->temp2_offset); } else { temp = TEMP8_TO_REG(val); } data->temp8[nr] = temp; i2c_smbus_write_byte_data(client, reg, temp); |
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mutex_unlock(&data->update_lock); |
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return count; |
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} |
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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); |
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int nr = attr->index; int temp; if (!nr) { /* * Use unsigned temperature unless its value is zero. * If it is zero, use signed temperature. */ if (data->temp11u) temp = TEMP11_FROM_REG(data->temp11u); else temp = TEMP11_FROM_REG(data->temp11[nr]); } else { if (data->remote_unsigned && nr == 2) temp = TEMP11_FROM_REG((u16)data->temp11[nr]); else temp = TEMP11_FROM_REG(data->temp11[nr]); } return sprintf(buf, "%d ", temp + data->temp2_offset); |
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} |
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static ssize_t set_temp11(struct device *dev, struct device_attribute *devattr, const char *buf, size_t count) { |
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static const u8 reg[6] = { |
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LM63_REG_REMOTE_LOW_MSB, LM63_REG_REMOTE_LOW_LSB, LM63_REG_REMOTE_HIGH_MSB, LM63_REG_REMOTE_HIGH_LSB, |
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LM63_REG_REMOTE_OFFSET_MSB, LM63_REG_REMOTE_OFFSET_LSB, |
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}; 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); |
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long val; int err; |
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int nr = attr->index; |
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err = kstrtol(buf, 10, &val); if (err) return err; |
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mutex_lock(&data->update_lock); |
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if (data->remote_unsigned && nr == 2) data->temp11[nr] = TEMP11U_TO_REG(val - data->temp2_offset); else data->temp11[nr] = TEMP11_TO_REG(val - data->temp2_offset); |
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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); |
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mutex_unlock(&data->update_lock); |
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return count; |
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} |
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/* * 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) |
1da177e4c Linux-2.6.12-rc2 |
415 416 |
{ struct lm63_data *data = lm63_update_device(dev); |
e872c91e7 hwmon: (lm63) Add... |
417 418 |
return sprintf(buf, "%d ", temp8_from_reg(data, 2) |
2778fb13b hwmon: (lm63) Con... |
419 |
+ data->temp2_offset |
1da177e4c Linux-2.6.12-rc2 |
420 421 |
- TEMP8_FROM_REG(data->temp2_crit_hyst)); } |
662bda283 hwmon: (lm63) Fix... |
422 423 424 425 426 427 |
/* * 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, |
bc51ae115 [PATCH] I2C: lm63... |
428 |
const char *buf, size_t count) |
1da177e4c Linux-2.6.12-rc2 |
429 430 431 |
{ struct i2c_client *client = to_i2c_client(dev); struct lm63_data *data = i2c_get_clientdata(client); |
662bda283 hwmon: (lm63) Fix... |
432 433 |
long val; int err; |
1da177e4c Linux-2.6.12-rc2 |
434 |
long hyst; |
662bda283 hwmon: (lm63) Fix... |
435 436 437 |
err = kstrtol(buf, 10, &val); if (err) return err; |
9a61bf630 [PATCH] hwmon: Se... |
438 |
mutex_lock(&data->update_lock); |
e872c91e7 hwmon: (lm63) Add... |
439 |
hyst = temp8_from_reg(data, 2) + data->temp2_offset - val; |
1da177e4c Linux-2.6.12-rc2 |
440 441 |
i2c_smbus_write_byte_data(client, LM63_REG_REMOTE_TCRIT_HYST, HYST_TO_REG(hyst)); |
9a61bf630 [PATCH] hwmon: Se... |
442 |
mutex_unlock(&data->update_lock); |
1da177e4c Linux-2.6.12-rc2 |
443 444 |
return count; } |
04738b2b2 hwmon: (lm63) Add... |
445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 |
/* * Set conversion rate. * client->update_lock must be held when calling this function. */ static void lm63_set_convrate(struct i2c_client *client, struct lm63_data *data, unsigned int interval) { int i; unsigned int update_interval; /* Shift calculations to avoid rounding errors */ interval <<= 6; /* find the nearest update rate */ update_interval = (1 << (LM63_MAX_CONVRATE + 6)) * 1000 / data->max_convrate_hz; for (i = 0; i < LM63_MAX_CONVRATE; i++, update_interval >>= 1) if (interval >= update_interval * 3 / 4) break; i2c_smbus_write_byte_data(client, LM63_REG_CONVRATE, i); data->update_interval = UPDATE_INTERVAL(data->max_convrate_hz, i); } static ssize_t show_update_interval(struct device *dev, struct device_attribute *attr, char *buf) { struct lm63_data *data = dev_get_drvdata(dev); return sprintf(buf, "%u ", data->update_interval); } static ssize_t set_update_interval(struct device *dev, struct device_attribute *attr, 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; int err; err = kstrtoul(buf, 10, &val); if (err) return err; mutex_lock(&data->update_lock); lm63_set_convrate(client, data, SENSORS_LIMIT(val, 0, 100000)); mutex_unlock(&data->update_lock); return count; } |
f496b2d4f hwmon: (lm63) Add... |
497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 |
static ssize_t show_type(struct device *dev, struct device_attribute *attr, char *buf) { struct i2c_client *client = to_i2c_client(dev); struct lm63_data *data = i2c_get_clientdata(client); return sprintf(buf, data->trutherm ? "1 " : "2 "); } static ssize_t set_type(struct device *dev, struct device_attribute *attr, 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; int ret; u8 reg; ret = kstrtoul(buf, 10, &val); if (ret < 0) return ret; if (val != 1 && val != 2) return -EINVAL; mutex_lock(&data->update_lock); data->trutherm = val == 1; reg = i2c_smbus_read_byte_data(client, LM96163_REG_TRUTHERM) & ~0x02; i2c_smbus_write_byte_data(client, LM96163_REG_TRUTHERM, reg | (data->trutherm ? 0x02 : 0x00)); data->valid = 0; mutex_unlock(&data->update_lock); return count; } |
bc51ae115 [PATCH] I2C: lm63... |
533 534 |
static ssize_t show_alarms(struct device *dev, struct device_attribute *dummy, char *buf) |
1da177e4c Linux-2.6.12-rc2 |
535 536 537 538 539 |
{ struct lm63_data *data = lm63_update_device(dev); return sprintf(buf, "%u ", data->alarms); } |
2d45771e6 hwmon: Add indivi... |
540 541 542 543 544 545 546 547 548 549 |
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 ", (data->alarms >> bitnr) & 1); } |
bc51ae115 [PATCH] I2C: lm63... |
550 551 552 |
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); |
1da177e4c Linux-2.6.12-rc2 |
553 554 555 |
static DEVICE_ATTR(pwm1, S_IWUSR | S_IRUGO, show_pwm1, set_pwm1); static DEVICE_ATTR(pwm1_enable, S_IRUGO, show_pwm1_enable, NULL); |
2778fb13b hwmon: (lm63) Con... |
556 557 |
static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_local_temp8, NULL, 0); static SENSOR_DEVICE_ATTR(temp1_max, S_IWUSR | S_IRUGO, show_local_temp8, |
94e55df48 hwmon: (lm63) Add... |
558 |
set_temp8, 1); |
1da177e4c Linux-2.6.12-rc2 |
559 |
|
bc51ae115 [PATCH] I2C: lm63... |
560 561 562 563 564 |
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); |
786375f72 hwmon: (lm63) Add... |
565 566 |
static SENSOR_DEVICE_ATTR(temp2_offset, S_IWUSR | S_IRUGO, show_temp11, set_temp11, 3); |
2778fb13b hwmon: (lm63) Con... |
567 |
static SENSOR_DEVICE_ATTR(temp2_crit, S_IRUGO, show_remote_temp8, |
94e55df48 hwmon: (lm63) Add... |
568 |
set_temp8, 2); |
1da177e4c Linux-2.6.12-rc2 |
569 570 |
static DEVICE_ATTR(temp2_crit_hyst, S_IWUSR | S_IRUGO, show_temp2_crit_hyst, set_temp2_crit_hyst); |
f496b2d4f hwmon: (lm63) Add... |
571 |
static DEVICE_ATTR(temp2_type, S_IWUSR | S_IRUGO, show_type, set_type); |
2d45771e6 hwmon: Add indivi... |
572 573 574 |
/* 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); |
7817a39e6 hwmon: Fault file... |
575 |
static SENSOR_DEVICE_ATTR(temp2_fault, S_IRUGO, show_alarm, NULL, 2); |
2d45771e6 hwmon: Add indivi... |
576 577 578 579 |
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 */ |
1da177e4c Linux-2.6.12-rc2 |
580 |
static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL); |
04738b2b2 hwmon: (lm63) Add... |
581 582 |
static DEVICE_ATTR(update_interval, S_IRUGO | S_IWUSR, show_update_interval, set_update_interval); |
0e39e01c9 hwmon: Fix unchec... |
583 584 585 586 587 588 589 590 |
static struct attribute *lm63_attributes[] = { &dev_attr_pwm1.attr, &dev_attr_pwm1_enable.attr, &sensor_dev_attr_temp1_input.dev_attr.attr, &sensor_dev_attr_temp2_input.dev_attr.attr, &sensor_dev_attr_temp2_min.dev_attr.attr, &sensor_dev_attr_temp1_max.dev_attr.attr, &sensor_dev_attr_temp2_max.dev_attr.attr, |
786375f72 hwmon: (lm63) Add... |
591 |
&sensor_dev_attr_temp2_offset.dev_attr.attr, |
0e39e01c9 hwmon: Fix unchec... |
592 593 594 595 |
&sensor_dev_attr_temp2_crit.dev_attr.attr, &dev_attr_temp2_crit_hyst.attr, &sensor_dev_attr_temp2_crit_alarm.dev_attr.attr, |
7817a39e6 hwmon: Fault file... |
596 |
&sensor_dev_attr_temp2_fault.dev_attr.attr, |
0e39e01c9 hwmon: Fix unchec... |
597 598 599 600 |
&sensor_dev_attr_temp2_min_alarm.dev_attr.attr, &sensor_dev_attr_temp2_max_alarm.dev_attr.attr, &sensor_dev_attr_temp1_max_alarm.dev_attr.attr, &dev_attr_alarms.attr, |
04738b2b2 hwmon: (lm63) Add... |
601 |
&dev_attr_update_interval.attr, |
0e39e01c9 hwmon: Fix unchec... |
602 603 |
NULL }; |
94e55df48 hwmon: (lm63) Add... |
604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 |
/* * On LM63, temp2_crit can be set only once, which should be job * of the bootloader. * On LM64, temp2_crit can always be set. * On LM96163, temp2_crit can be set if bit 1 of the configuration * register is true. */ static umode_t lm63_attribute_mode(struct kobject *kobj, struct attribute *attr, int index) { struct device *dev = container_of(kobj, struct device, kobj); struct i2c_client *client = to_i2c_client(dev); struct lm63_data *data = i2c_get_clientdata(client); if (attr == &sensor_dev_attr_temp2_crit.dev_attr.attr && (data->kind == lm64 || (data->kind == lm96163 && (data->config & 0x02)))) return attr->mode | S_IWUSR; return attr->mode; } |
0e39e01c9 hwmon: Fix unchec... |
625 |
static const struct attribute_group lm63_group = { |
94e55df48 hwmon: (lm63) Add... |
626 |
.is_visible = lm63_attribute_mode, |
0e39e01c9 hwmon: Fix unchec... |
627 628 629 630 631 632 633 634 635 636 637 638 639 640 |
.attrs = lm63_attributes, }; static struct attribute *lm63_attributes_fan1[] = { &sensor_dev_attr_fan1_input.dev_attr.attr, &sensor_dev_attr_fan1_min.dev_attr.attr, &sensor_dev_attr_fan1_min_alarm.dev_attr.attr, NULL }; static const struct attribute_group lm63_group_fan1 = { .attrs = lm63_attributes_fan1, }; |
1da177e4c Linux-2.6.12-rc2 |
641 642 643 |
/* * Real code */ |
d5957be2f hwmon: (lm63) Con... |
644 |
/* Return 0 if detection is successful, -ENODEV otherwise */ |
310ec7921 i2c: Drop the kin... |
645 |
static int lm63_detect(struct i2c_client *new_client, |
d5957be2f hwmon: (lm63) Con... |
646 |
struct i2c_board_info *info) |
1da177e4c Linux-2.6.12-rc2 |
647 |
{ |
d5957be2f hwmon: (lm63) Con... |
648 |
struct i2c_adapter *adapter = new_client->adapter; |
52df6440a hwmon: Clean up d... |
649 650 |
u8 man_id, chip_id, reg_config1, reg_config2; u8 reg_alert_status, reg_alert_mask; |
10f2ed31a hwmon: (lm63) Add... |
651 |
int address = new_client->addr; |
1da177e4c Linux-2.6.12-rc2 |
652 653 |
if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) |
d5957be2f hwmon: (lm63) Con... |
654 |
return -ENODEV; |
1da177e4c Linux-2.6.12-rc2 |
655 |
|
52df6440a hwmon: Clean up d... |
656 657 658 659 660 661 662 663 664 665 666 667 668 |
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 */ |
52df6440a hwmon: Clean up d... |
669 670 671 672 673 674 675 676 677 |
|| (reg_config1 & 0x18) != 0x00 || (reg_config2 & 0xF8) != 0x00 || (reg_alert_status & 0x20) != 0x00 || (reg_alert_mask & 0xA4) != 0xA4) { dev_dbg(&adapter->dev, "Unsupported chip (man_id=0x%02X, chip_id=0x%02X) ", man_id, chip_id); return -ENODEV; |
1da177e4c Linux-2.6.12-rc2 |
678 |
} |
10f2ed31a hwmon: (lm63) Add... |
679 680 681 682 |
if (chip_id == 0x41 && address == 0x4c) strlcpy(info->type, "lm63", I2C_NAME_SIZE); else if (chip_id == 0x51 && (address == 0x18 || address == 0x4e)) strlcpy(info->type, "lm64", I2C_NAME_SIZE); |
210961c43 hwmon: (lm63) Add... |
683 684 |
else if (chip_id == 0x49 && address == 0x4c) strlcpy(info->type, "lm96163", I2C_NAME_SIZE); |
10f2ed31a hwmon: (lm63) Add... |
685 686 |
else return -ENODEV; |
d5957be2f hwmon: (lm63) Con... |
687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 |
return 0; } static int lm63_probe(struct i2c_client *new_client, const struct i2c_device_id *id) { struct lm63_data *data; int err; data = kzalloc(sizeof(struct lm63_data), GFP_KERNEL); if (!data) { err = -ENOMEM; goto exit; } i2c_set_clientdata(new_client, data); |
1da177e4c Linux-2.6.12-rc2 |
704 |
data->valid = 0; |
9a61bf630 [PATCH] hwmon: Se... |
705 |
mutex_init(&data->update_lock); |
1da177e4c Linux-2.6.12-rc2 |
706 |
|
2778fb13b hwmon: (lm63) Con... |
707 708 709 710 711 712 |
/* Set the device type */ data->kind = id->driver_data; if (data->kind == lm64) data->temp2_offset = 16000; /* Initialize chip */ |
1da177e4c Linux-2.6.12-rc2 |
713 714 715 |
lm63_init_client(new_client); /* Register sysfs hooks */ |
662bda283 hwmon: (lm63) Fix... |
716 717 |
err = sysfs_create_group(&new_client->dev.kobj, &lm63_group); if (err) |
d5957be2f hwmon: (lm63) Con... |
718 |
goto exit_free; |
0e39e01c9 hwmon: Fix unchec... |
719 |
if (data->config & 0x04) { /* tachometer enabled */ |
662bda283 hwmon: (lm63) Fix... |
720 721 722 |
err = sysfs_create_group(&new_client->dev.kobj, &lm63_group_fan1); if (err) |
0e39e01c9 hwmon: Fix unchec... |
723 |
goto exit_remove_files; |
943b0830c [PATCH] I2C hwmon... |
724 |
} |
f496b2d4f hwmon: (lm63) Add... |
725 726 727 728 729 730 |
if (data->kind == lm96163) { err = device_create_file(&new_client->dev, &dev_attr_temp2_type); if (err) goto exit_remove_files; } |
943b0830c [PATCH] I2C hwmon... |
731 |
|
1beeffe43 hwmon: Convert fr... |
732 733 734 |
data->hwmon_dev = hwmon_device_register(&new_client->dev); if (IS_ERR(data->hwmon_dev)) { err = PTR_ERR(data->hwmon_dev); |
0e39e01c9 hwmon: Fix unchec... |
735 |
goto exit_remove_files; |
1da177e4c Linux-2.6.12-rc2 |
736 |
} |
1da177e4c Linux-2.6.12-rc2 |
737 738 |
return 0; |
0e39e01c9 hwmon: Fix unchec... |
739 |
exit_remove_files: |
f496b2d4f hwmon: (lm63) Add... |
740 |
device_remove_file(&new_client->dev, &dev_attr_temp2_type); |
0e39e01c9 hwmon: Fix unchec... |
741 742 |
sysfs_remove_group(&new_client->dev.kobj, &lm63_group); sysfs_remove_group(&new_client->dev.kobj, &lm63_group_fan1); |
1da177e4c Linux-2.6.12-rc2 |
743 744 745 746 747 |
exit_free: kfree(data); exit: return err; } |
662bda283 hwmon: (lm63) Fix... |
748 749 750 751 |
/* * Ideally we shouldn't have to initialize anything, since the BIOS * should have taken care of everything */ |
1da177e4c Linux-2.6.12-rc2 |
752 753 754 |
static void lm63_init_client(struct i2c_client *client) { struct lm63_data *data = i2c_get_clientdata(client); |
04738b2b2 hwmon: (lm63) Add... |
755 |
u8 convrate; |
1da177e4c Linux-2.6.12-rc2 |
756 757 758 759 760 761 762 |
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 */ |
898eb71cb Add missing newli... |
763 764 |
dev_dbg(&client->dev, "Switching to operational mode "); |
1da177e4c Linux-2.6.12-rc2 |
765 766 767 768 |
data->config &= 0xA7; i2c_smbus_write_byte_data(client, LM63_REG_CONFIG1, data->config); } |
409c0b5bd hwmon: (lm63) LM6... |
769 770 771 |
/* Tachometer is always enabled on LM64 */ if (data->kind == lm64) data->config |= 0x04; |
1da177e4c Linux-2.6.12-rc2 |
772 773 774 775 776 |
/* 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; |
04738b2b2 hwmon: (lm63) Add... |
777 778 779 780 781 782 783 |
switch (data->kind) { case lm63: case lm64: data->max_convrate_hz = LM63_MAX_CONVRATE_HZ; break; case lm96163: data->max_convrate_hz = LM96163_MAX_CONVRATE_HZ; |
f496b2d4f hwmon: (lm63) Add... |
784 785 786 |
data->trutherm = i2c_smbus_read_byte_data(client, LM96163_REG_TRUTHERM) & 0x02; |
04738b2b2 hwmon: (lm63) Add... |
787 788 789 790 791 792 793 |
break; } convrate = i2c_smbus_read_byte_data(client, LM63_REG_CONVRATE); if (unlikely(convrate > LM63_MAX_CONVRATE)) convrate = LM63_MAX_CONVRATE; data->update_interval = UPDATE_INTERVAL(data->max_convrate_hz, convrate); |
210961c43 hwmon: (lm63) Add... |
794 |
/* |
e872c91e7 hwmon: (lm63) Add... |
795 796 |
* For LM96163, check if high resolution PWM * and unsigned temperature format is enabled. |
210961c43 hwmon: (lm63) Add... |
797 798 799 800 801 802 803 804 805 |
*/ if (data->kind == lm96163) { u8 config_enhanced = i2c_smbus_read_byte_data(client, LM96163_REG_CONFIG_ENHANCED); if ((config_enhanced & 0x10) && !(data->config_fan & 0x08) && data->pwm1_freq == 8) data->pwm_highres = true; if (config_enhanced & 0x08) |
e872c91e7 hwmon: (lm63) Add... |
806 |
data->remote_unsigned = true; |
210961c43 hwmon: (lm63) Add... |
807 |
} |
1da177e4c Linux-2.6.12-rc2 |
808 |
/* Show some debug info about the LM63 configuration */ |
409c0b5bd hwmon: (lm63) LM6... |
809 810 811 812 813 |
if (data->kind == lm63) dev_dbg(&client->dev, "Alert/tach pin configured for %s ", (data->config & 0x04) ? "tachometer input" : "alert output"); |
1da177e4c Linux-2.6.12-rc2 |
814 815 816 817 818 819 820 821 822 |
dev_dbg(&client->dev, "PWM clock %s kHz, output frequency %u Hz ", (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 ", (data->config_fan & 0x10) ? "low" : "high", (data->config_fan & 0x20) ? "manual" : "auto"); } |
d5957be2f hwmon: (lm63) Con... |
823 |
static int lm63_remove(struct i2c_client *client) |
1da177e4c Linux-2.6.12-rc2 |
824 |
{ |
943b0830c [PATCH] I2C hwmon... |
825 |
struct lm63_data *data = i2c_get_clientdata(client); |
1da177e4c Linux-2.6.12-rc2 |
826 |
|
1beeffe43 hwmon: Convert fr... |
827 |
hwmon_device_unregister(data->hwmon_dev); |
f496b2d4f hwmon: (lm63) Add... |
828 |
device_remove_file(&client->dev, &dev_attr_temp2_type); |
0e39e01c9 hwmon: Fix unchec... |
829 830 |
sysfs_remove_group(&client->dev.kobj, &lm63_group); sysfs_remove_group(&client->dev.kobj, &lm63_group_fan1); |
943b0830c [PATCH] I2C hwmon... |
831 |
|
943b0830c [PATCH] I2C hwmon... |
832 |
kfree(data); |
1da177e4c Linux-2.6.12-rc2 |
833 834 835 836 837 838 839 |
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); |
04738b2b2 hwmon: (lm63) Add... |
840 |
unsigned long next_update; |
1da177e4c Linux-2.6.12-rc2 |
841 |
|
9a61bf630 [PATCH] hwmon: Se... |
842 |
mutex_lock(&data->update_lock); |
1da177e4c Linux-2.6.12-rc2 |
843 |
|
04738b2b2 hwmon: (lm63) Add... |
844 845 846 847 |
next_update = data->last_updated + msecs_to_jiffies(data->update_interval) + 1; if (time_after(jiffies, next_update) || !data->valid) { |
1da177e4c Linux-2.6.12-rc2 |
848 849 |
if (data->config & 0x04) { /* tachometer enabled */ /* order matters for fan1_input */ |
bc51ae115 [PATCH] I2C: lm63... |
850 851 852 853 854 855 856 857 |
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); |
1da177e4c Linux-2.6.12-rc2 |
858 859 860 861 862 863 864 865 |
} 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); |
bc51ae115 [PATCH] I2C: lm63... |
866 867 868 869 |
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); |
1da177e4c Linux-2.6.12-rc2 |
870 871 |
/* order matters for temp2_input */ |
bc51ae115 [PATCH] I2C: lm63... |
872 873 874 875 876 |
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, |
1da177e4c Linux-2.6.12-rc2 |
877 878 879 |
LM63_REG_REMOTE_LOW_MSB) << 8) | i2c_smbus_read_byte_data(client, LM63_REG_REMOTE_LOW_LSB); |
bc51ae115 [PATCH] I2C: lm63... |
880 881 882 883 |
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); |
786375f72 hwmon: (lm63) Add... |
884 885 886 887 |
data->temp11[3] = (i2c_smbus_read_byte_data(client, LM63_REG_REMOTE_OFFSET_MSB) << 8) | i2c_smbus_read_byte_data(client, LM63_REG_REMOTE_OFFSET_LSB); |
e872c91e7 hwmon: (lm63) Add... |
888 889 890 891 892 893 |
if (data->kind == lm96163) data->temp11u = (i2c_smbus_read_byte_data(client, LM96163_REG_REMOTE_TEMP_U_MSB) << 8) | i2c_smbus_read_byte_data(client, LM96163_REG_REMOTE_TEMP_U_LSB); |
bc51ae115 [PATCH] I2C: lm63... |
894 895 |
data->temp8[2] = i2c_smbus_read_byte_data(client, LM63_REG_REMOTE_TCRIT); |
1da177e4c Linux-2.6.12-rc2 |
896 897 898 899 900 901 902 903 904 |
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; } |
9a61bf630 [PATCH] hwmon: Se... |
905 |
mutex_unlock(&data->update_lock); |
1da177e4c Linux-2.6.12-rc2 |
906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 |
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); |