| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Jean Delvare | 4613 | 78.08% | 17 | 38.64% |
| Guenter Roeck | 976 | 16.52% | 15 | 34.09% |
| Javier Martinez Canillas | 106 | 1.79% | 1 | 2.27% |
| Dirk Eibach | 94 | 1.59% | 1 | 2.27% |
| Matthew Garrett | 61 | 1.03% | 1 | 2.27% |
| Mark M. Hoffman | 15 | 0.25% | 2 | 4.55% |
| Julia Lawall | 14 | 0.24% | 1 | 2.27% |
| Ingo Molnar | 10 | 0.17% | 1 | 2.27% |
| Yani Ioannou | 9 | 0.15% | 1 | 2.27% |
| Alexey Dobriyan | 6 | 0.10% | 1 | 2.27% |
| Thomas Gleixner | 2 | 0.03% | 1 | 2.27% |
| Tony Jones | 1 | 0.02% | 1 | 2.27% |
| Axel Lin | 1 | 0.02% | 1 | 2.27% |
| Total | 5908 | 44 |
// SPDX-License-Identifier: GPL-2.0-or-later /* * lm63.c - driver for the National Semiconductor LM63 temperature sensor * with integrated fan control * Copyright (C) 2004-2008 Jean Delvare <jdelvare@suse.de> * 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. */ #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> #include <linux/of_device.h> #include <linux/sysfs.h> #include <linux/types.h> /* * Addresses to scan * 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. */ static const unsigned short normal_i2c[] = { 0x18, 0x4c, 0x4e, I2C_CLIENT_END }; /* * The LM63 registers */ #define LM63_REG_CONFIG1 0x03 #define LM63_REG_CONVRATE 0x04 #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_LUT_TEMP_HYST 0x4F #define LM63_REG_LUT_TEMP(nr) (0x50 + 2 * (nr)) #define LM63_REG_LUT_PWM(nr) (0x51 + 2 * (nr)) #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 #define LM96163_REG_TRUTHERM 0x30 #define LM96163_REG_REMOTE_TEMP_U_MSB 0x31 #define LM96163_REG_REMOTE_TEMP_U_LSB 0x32 #define LM96163_REG_CONFIG_ENHANCED 0x45 #define LM63_MAX_CONVRATE 9 #define LM63_MAX_CONVRATE_HZ 32 #define LM96163_MAX_CONVRATE_HZ 26 /* * 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. * For LM64 the actual remote diode temperature is 16 degree Celsius higher * than the register reading. Remote temperature setpoints have to be * adapted accordingly. */ #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) DIV_ROUND_CLOSEST(clamp_val((val), -128000, \ 127000), 1000) #define TEMP8U_TO_REG(val) DIV_ROUND_CLOSEST(clamp_val((val), 0, \ 255000), 1000) #define TEMP11_FROM_REG(reg) ((reg) / 32 * 125) #define TEMP11_TO_REG(val) (DIV_ROUND_CLOSEST(clamp_val((val), -128000, \ 127875), 125) * 32) #define TEMP11U_TO_REG(val) (DIV_ROUND_CLOSEST(clamp_val((val), 0, \ 255875), 125) * 32) #define HYST_TO_REG(val) DIV_ROUND_CLOSEST(clamp_val((val), 0, 127000), \ 1000) #define UPDATE_INTERVAL(max, rate) \ ((1000 << (LM63_MAX_CONVRATE - (rate))) / (max)) enum chips { lm63, lm64, lm96163 }; /* * Client data (each client gets its own) */ struct lm63_data { struct i2c_client *client; struct mutex update_lock; const struct attribute_group *groups[5]; char valid; /* zero until following fields are valid */ char lut_valid; /* zero until lut fields are valid */ unsigned long last_updated; /* in jiffies */ unsigned long lut_last_updated; /* in jiffies */ enum chips kind; int temp2_offset; int update_interval; /* in milliseconds */ int max_convrate_hz; int lut_size; /* 8 or 12 */ /* registers values */ u8 config, config_fan; u16 fan[2]; /* 0: input 1: low limit */ u8 pwm1_freq; u8 pwm1[13]; /* 0: current output 1-12: lookup table */ s8 temp8[15]; /* 0: local input 1: local high limit 2: remote critical limit 3-14: lookup table */ s16 temp11[4]; /* 0: remote input 1: remote low limit 2: remote high limit 3: remote offset */ u16 temp11u; /* remote input (unsigned) */ u8 temp2_crit_hyst; u8 lut_temp_hyst; u8 alarms; bool pwm_highres; bool lut_temp_highres; bool remote_unsigned; /* true if unsigned remote upper limits */ bool trutherm; }; 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]); } static inline int lut_temp_from_reg(struct lm63_data *data, int nr) { return data->temp8[nr] * (data->lut_temp_highres ? 500 : 1000); } static inline int lut_temp_to_reg(struct lm63_data *data, long val) { val -= data->temp2_offset; if (data->lut_temp_highres) return DIV_ROUND_CLOSEST(clamp_val(val, 0, 127500), 500); else return DIV_ROUND_CLOSEST(clamp_val(val, 0, 127000), 1000); } /* * Update the lookup table register cache. * client->update_lock must be held when calling this function. */ static void lm63_update_lut(struct lm63_data *data) { struct i2c_client *client = data->client; int i; if (time_after(jiffies, data->lut_last_updated + 5 * HZ) || !data->lut_valid) { for (i = 0; i < data->lut_size; i++) { data->pwm1[1 + i] = i2c_smbus_read_byte_data(client, LM63_REG_LUT_PWM(i)); data->temp8[3 + i] = i2c_smbus_read_byte_data(client, LM63_REG_LUT_TEMP(i)); } data->lut_temp_hyst = i2c_smbus_read_byte_data(client, LM63_REG_LUT_TEMP_HYST); data->lut_last_updated = jiffies; data->lut_valid = 1; } } static struct lm63_data *lm63_update_device(struct device *dev) { struct lm63_data *data = dev_get_drvdata(dev); struct i2c_client *client = data->client; unsigned long next_update; mutex_lock(&data->update_lock); next_update = data->last_updated + msecs_to_jiffies(data->update_interval); if (time_after(jiffies, next_update) || !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[0] = 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->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); 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); 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; } lm63_update_lut(data); mutex_unlock(&data->update_lock); return data; } /* * Trip points in the lookup table should be in ascending order for both * temperatures and PWM output values. */ static int lm63_lut_looks_bad(struct device *dev, struct lm63_data *data) { int i; mutex_lock(&data->update_lock); lm63_update_lut(data); for (i = 1; i < data->lut_size; i++) { if (data->pwm1[1 + i - 1] > data->pwm1[1 + i] || data->temp8[3 + i - 1] > data->temp8[3 + i]) { dev_warn(dev, "Lookup table doesn't look sane (check entries %d and %d)\n", i, i + 1); break; } } mutex_unlock(&data->update_lock); return i == data->lut_size ? 0 : 1; } /* * 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 lm63_data *data = dev_get_drvdata(dev); struct i2c_client *client = data->client; unsigned long val; int err; err = kstrtoul(buf, 10, &val); if (err) return err; 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 *devattr, char *buf) { struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); struct lm63_data *data = lm63_update_device(dev); int nr = attr->index; int pwm; if (data->pwm_highres) pwm = data->pwm1[nr]; else pwm = data->pwm1[nr] >= 2 * data->pwm1_freq ? 255 : (data->pwm1[nr] * 255 + data->pwm1_freq) / (2 * data->pwm1_freq); return sprintf(buf, "%d\n", pwm); } static ssize_t set_pwm1(struct device *dev, struct device_attribute *devattr, const char *buf, size_t count) { struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); struct lm63_data *data = dev_get_drvdata(dev); struct i2c_client *client = data->client; int nr = attr->index; unsigned long val; int err; u8 reg; if (!(data->config_fan & 0x20)) /* register is read-only */ return -EPERM; err = kstrtoul(buf, 10, &val); if (err) return err; reg = nr ? LM63_REG_LUT_PWM(nr - 1) : LM63_REG_PWM_VALUE; val = clamp_val(val, 0, 255); mutex_lock(&data->update_lock); data->pwm1[nr] = data->pwm_highres ? val : (val * data->pwm1_freq * 2 + 127) / 255; i2c_smbus_write_byte_data(client, reg, data->pwm1[nr]); mutex_unlock(&data->update_lock); return count; } static ssize_t pwm1_enable_show(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 pwm1_enable_store(struct device *dev, struct device_attribute *dummy, const char *buf, size_t count) { struct lm63_data *data = dev_get_drvdata(dev); struct i2c_client *client = data->client; unsigned long val; int err; err = kstrtoul(buf, 10, &val); if (err) return err; if (val < 1 || val > 2) return -EINVAL; /* * Only let the user switch to automatic mode if the lookup table * looks sane. */ if (val == 2 && lm63_lut_looks_bad(dev, data)) return -EPERM; mutex_lock(&data->update_lock); data->config_fan = i2c_smbus_read_byte_data(client, LM63_REG_CONFIG_FAN); if (val == 1) data->config_fan |= 0x20; else data->config_fan &= ~0x20; i2c_smbus_write_byte_data(client, LM63_REG_CONFIG_FAN, data->config_fan); mutex_unlock(&data->update_lock); return count; } /* * 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) { 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 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); return sprintf(buf, "%d\n", temp8_from_reg(data, attr->index) + data->temp2_offset); } static ssize_t show_lut_temp(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", lut_temp_from_reg(data, attr->index) + data->temp2_offset); } static ssize_t set_temp8(struct device *dev, struct device_attribute *devattr, const char *buf, size_t count) { struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); struct lm63_data *data = dev_get_drvdata(dev); struct i2c_client *client = data->client; int nr = attr->index; long val; int err; int temp; u8 reg; err = kstrtol(buf, 10, &val); if (err) return err; mutex_lock(&data->update_lock); switch (nr) { case 2: reg = LM63_REG_REMOTE_TCRIT; if (data->remote_unsigned) temp = TEMP8U_TO_REG(val - data->temp2_offset); else temp = TEMP8_TO_REG(val - data->temp2_offset); break; case 1: reg = LM63_REG_LOCAL_HIGH; temp = TEMP8_TO_REG(val); break; default: /* lookup table */ reg = LM63_REG_LUT_TEMP(nr - 3); temp = lut_temp_to_reg(data, val); } data->temp8[nr] = temp; i2c_smbus_write_byte_data(client, reg, temp); 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); 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\n", temp + data->temp2_offset); } static ssize_t set_temp11(struct device *dev, struct device_attribute *devattr, const char *buf, size_t count) { static const u8 reg[6] = { LM63_REG_REMOTE_LOW_MSB, LM63_REG_REMOTE_LOW_LSB, LM63_REG_REMOTE_HIGH_MSB, LM63_REG_REMOTE_HIGH_LSB, LM63_REG_REMOTE_OFFSET_MSB, LM63_REG_REMOTE_OFFSET_LSB, }; struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); struct lm63_data *data = dev_get_drvdata(dev); struct i2c_client *client = data->client; long val; int err; int nr = attr->index; err = kstrtol(buf, 10, &val); if (err) return err; mutex_lock(&data->update_lock); 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); 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 temp2_crit_hyst_show(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, 2) + data->temp2_offset - TEMP8_FROM_REG(data->temp2_crit_hyst)); } static ssize_t show_lut_temp_hyst(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", lut_temp_from_reg(data, attr->index) + data->temp2_offset - TEMP8_FROM_REG(data->lut_temp_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 temp2_crit_hyst_store(struct device *dev, struct device_attribute *dummy, const char *buf, size_t count) { struct lm63_data *data = dev_get_drvdata(dev); struct i2c_client *client = data->client; long val; int err; long hyst; err = kstrtol(buf, 10, &val); if (err) return err; mutex_lock(&data->update_lock); hyst = temp8_from_reg(data, 2) + data->temp2_offset - val; i2c_smbus_write_byte_data(client, LM63_REG_REMOTE_TCRIT_HYST, HYST_TO_REG(hyst)); mutex_unlock(&data->update_lock); return count; } /* * Set conversion rate. * client->update_lock must be held when calling this function. */ static void lm63_set_convrate(struct lm63_data *data, unsigned int interval) { struct i2c_client *client = data->client; unsigned int update_interval; int i; /* 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 update_interval_show(struct device *dev, struct device_attribute *attr, char *buf) { struct lm63_data *data = dev_get_drvdata(dev); return sprintf(buf, "%u\n", data->update_interval); } static ssize_t update_interval_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct lm63_data *data = dev_get_drvdata(dev); unsigned long val; int err; err = kstrtoul(buf, 10, &val); if (err) return err; mutex_lock(&data->update_lock); lm63_set_convrate(data, clamp_val(val, 0, 100000)); mutex_unlock(&data->update_lock); return count; } static ssize_t temp2_type_show(struct device *dev, struct device_attribute *attr, char *buf) { struct lm63_data *data = dev_get_drvdata(dev); return sprintf(buf, data->trutherm ? "1\n" : "2\n"); } static ssize_t temp2_type_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct lm63_data *data = dev_get_drvdata(dev); struct i2c_client *client = data->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; } static ssize_t alarms_show(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 SENSOR_DEVICE_ATTR(pwm1, S_IWUSR | S_IRUGO, show_pwm1, set_pwm1, 0); static DEVICE_ATTR_RW(pwm1_enable); static SENSOR_DEVICE_ATTR(pwm1_auto_point1_pwm, S_IWUSR | S_IRUGO, show_pwm1, set_pwm1, 1); static SENSOR_DEVICE_ATTR(pwm1_auto_point1_temp, S_IWUSR | S_IRUGO, show_lut_temp, set_temp8, 3); static SENSOR_DEVICE_ATTR(pwm1_auto_point1_temp_hyst, S_IRUGO, show_lut_temp_hyst, NULL, 3); static SENSOR_DEVICE_ATTR(pwm1_auto_point2_pwm, S_IWUSR | S_IRUGO, show_pwm1, set_pwm1, 2); static SENSOR_DEVICE_ATTR(pwm1_auto_point2_temp, S_IWUSR | S_IRUGO, show_lut_temp, set_temp8, 4); static SENSOR_DEVICE_ATTR(pwm1_auto_point2_temp_hyst, S_IRUGO, show_lut_temp_hyst, NULL, 4); static SENSOR_DEVICE_ATTR(pwm1_auto_point3_pwm, S_IWUSR | S_IRUGO, show_pwm1, set_pwm1, 3); static SENSOR_DEVICE_ATTR(pwm1_auto_point3_temp, S_IWUSR | S_IRUGO, show_lut_temp, set_temp8, 5); static SENSOR_DEVICE_ATTR(pwm1_auto_point3_temp_hyst, S_IRUGO, show_lut_temp_hyst, NULL, 5); static SENSOR_DEVICE_ATTR(pwm1_auto_point4_pwm, S_IWUSR | S_IRUGO, show_pwm1, set_pwm1, 4); static SENSOR_DEVICE_ATTR(pwm1_auto_point4_temp, S_IWUSR | S_IRUGO, show_lut_temp, set_temp8, 6); static SENSOR_DEVICE_ATTR(pwm1_auto_point4_temp_hyst, S_IRUGO, show_lut_temp_hyst, NULL, 6); static SENSOR_DEVICE_ATTR(pwm1_auto_point5_pwm, S_IWUSR | S_IRUGO, show_pwm1, set_pwm1, 5); static SENSOR_DEVICE_ATTR(pwm1_auto_point5_temp, S_IWUSR | S_IRUGO, show_lut_temp, set_temp8, 7); static SENSOR_DEVICE_ATTR(pwm1_auto_point5_temp_hyst, S_IRUGO, show_lut_temp_hyst, NULL, 7); static SENSOR_DEVICE_ATTR(pwm1_auto_point6_pwm, S_IWUSR | S_IRUGO, show_pwm1, set_pwm1, 6); static SENSOR_DEVICE_ATTR(pwm1_auto_point6_temp, S_IWUSR | S_IRUGO, show_lut_temp, set_temp8, 8); static SENSOR_DEVICE_ATTR(pwm1_auto_point6_temp_hyst, S_IRUGO, show_lut_temp_hyst, NULL, 8); static SENSOR_DEVICE_ATTR(pwm1_auto_point7_pwm, S_IWUSR | S_IRUGO, show_pwm1, set_pwm1, 7); static SENSOR_DEVICE_ATTR(pwm1_auto_point7_temp, S_IWUSR | S_IRUGO, show_lut_temp, set_temp8, 9); static SENSOR_DEVICE_ATTR(pwm1_auto_point7_temp_hyst, S_IRUGO, show_lut_temp_hyst, NULL, 9); static SENSOR_DEVICE_ATTR(pwm1_auto_point8_pwm, S_IWUSR | S_IRUGO, show_pwm1, set_pwm1, 8); static SENSOR_DEVICE_ATTR(pwm1_auto_point8_temp, S_IWUSR | S_IRUGO, show_lut_temp, set_temp8, 10); static SENSOR_DEVICE_ATTR(pwm1_auto_point8_temp_hyst, S_IRUGO, show_lut_temp_hyst, NULL, 10); static SENSOR_DEVICE_ATTR(pwm1_auto_point9_pwm, S_IWUSR | S_IRUGO, show_pwm1, set_pwm1, 9); static SENSOR_DEVICE_ATTR(pwm1_auto_point9_temp, S_IWUSR | S_IRUGO, show_lut_temp, set_temp8, 11); static SENSOR_DEVICE_ATTR(pwm1_auto_point9_temp_hyst, S_IRUGO, show_lut_temp_hyst, NULL, 11); static SENSOR_DEVICE_ATTR(pwm1_auto_point10_pwm, S_IWUSR | S_IRUGO, show_pwm1, set_pwm1, 10); static SENSOR_DEVICE_ATTR(pwm1_auto_point10_temp, S_IWUSR | S_IRUGO, show_lut_temp, set_temp8, 12); static SENSOR_DEVICE_ATTR(pwm1_auto_point10_temp_hyst, S_IRUGO, show_lut_temp_hyst, NULL, 12); static SENSOR_DEVICE_ATTR(pwm1_auto_point11_pwm, S_IWUSR | S_IRUGO, show_pwm1, set_pwm1, 11); static SENSOR_DEVICE_ATTR(pwm1_auto_point11_temp, S_IWUSR | S_IRUGO, show_lut_temp, set_temp8, 13); static SENSOR_DEVICE_ATTR(pwm1_auto_point11_temp_hyst, S_IRUGO, show_lut_temp_hyst, NULL, 13); static SENSOR_DEVICE_ATTR(pwm1_auto_point12_pwm, S_IWUSR | S_IRUGO, show_pwm1, set_pwm1, 12); static SENSOR_DEVICE_ATTR(pwm1_auto_point12_temp, S_IWUSR | S_IRUGO, show_lut_temp, set_temp8, 14); static SENSOR_DEVICE_ATTR(pwm1_auto_point12_temp_hyst, S_IRUGO, show_lut_temp_hyst, NULL, 14); 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, 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_offset, S_IWUSR | S_IRUGO, show_temp11, set_temp11, 3); static SENSOR_DEVICE_ATTR(temp2_crit, S_IRUGO, show_remote_temp8, set_temp8, 2); static DEVICE_ATTR_RW(temp2_crit_hyst); static DEVICE_ATTR_RW(temp2_type); /* 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_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_RO(alarms); static DEVICE_ATTR_RW(update_interval); static struct attribute *lm63_attributes[] = { &sensor_dev_attr_pwm1.dev_attr.attr, &dev_attr_pwm1_enable.attr, &sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr, &sensor_dev_attr_pwm1_auto_point1_temp.dev_attr.attr, &sensor_dev_attr_pwm1_auto_point1_temp_hyst.dev_attr.attr, &sensor_dev_attr_pwm1_auto_point2_pwm.dev_attr.attr, &sensor_dev_attr_pwm1_auto_point2_temp.dev_attr.attr, &sensor_dev_attr_pwm1_auto_point2_temp_hyst.dev_attr.attr, &sensor_dev_attr_pwm1_auto_point3_pwm.dev_attr.attr, &sensor_dev_attr_pwm1_auto_point3_temp.dev_attr.attr, &sensor_dev_attr_pwm1_auto_point3_temp_hyst.dev_attr.attr, &sensor_dev_attr_pwm1_auto_point4_pwm.dev_attr.attr, &sensor_dev_attr_pwm1_auto_point4_temp.dev_attr.attr, &sensor_dev_attr_pwm1_auto_point4_temp_hyst.dev_attr.attr, &sensor_dev_attr_pwm1_auto_point5_pwm.dev_attr.attr, &sensor_dev_attr_pwm1_auto_point5_temp.dev_attr.attr, &sensor_dev_attr_pwm1_auto_point5_temp_hyst.dev_attr.attr, &sensor_dev_attr_pwm1_auto_point6_pwm.dev_attr.attr, &sensor_dev_attr_pwm1_auto_point6_temp.dev_attr.attr, &sensor_dev_attr_pwm1_auto_point6_temp_hyst.dev_attr.attr, &sensor_dev_attr_pwm1_auto_point7_pwm.dev_attr.attr, &sensor_dev_attr_pwm1_auto_point7_temp.dev_attr.attr, &sensor_dev_attr_pwm1_auto_point7_temp_hyst.dev_attr.attr, &sensor_dev_attr_pwm1_auto_point8_pwm.dev_attr.attr, &sensor_dev_attr_pwm1_auto_point8_temp.dev_attr.attr, &sensor_dev_attr_pwm1_auto_point8_temp_hyst.dev_attr.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, &sensor_dev_attr_temp2_offset.dev_attr.attr, &sensor_dev_attr_temp2_crit.dev_attr.attr, &dev_attr_temp2_crit_hyst.attr, &sensor_dev_attr_temp2_crit_alarm.dev_attr.attr, &sensor_dev_attr_temp2_fault.dev_attr.attr, &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, &dev_attr_update_interval.attr, NULL }; static struct attribute *lm63_attributes_temp2_type[] = { &dev_attr_temp2_type.attr, NULL }; static const struct attribute_group lm63_group_temp2_type = { .attrs = lm63_attributes_temp2_type, }; static struct attribute *lm63_attributes_extra_lut[] = { &sensor_dev_attr_pwm1_auto_point9_pwm.dev_attr.attr, &sensor_dev_attr_pwm1_auto_point9_temp.dev_attr.attr, &sensor_dev_attr_pwm1_auto_point9_temp_hyst.dev_attr.attr, &sensor_dev_attr_pwm1_auto_point10_pwm.dev_attr.attr, &sensor_dev_attr_pwm1_auto_point10_temp.dev_attr.attr, &sensor_dev_attr_pwm1_auto_point10_temp_hyst.dev_attr.attr, &sensor_dev_attr_pwm1_auto_point11_pwm.dev_attr.attr, &sensor_dev_attr_pwm1_auto_point11_temp.dev_attr.attr, &sensor_dev_attr_pwm1_auto_point11_temp_hyst.dev_attr.attr, &sensor_dev_attr_pwm1_auto_point12_pwm.dev_attr.attr, &sensor_dev_attr_pwm1_auto_point12_temp.dev_attr.attr, &sensor_dev_attr_pwm1_auto_point12_temp_hyst.dev_attr.attr, NULL }; static const struct attribute_group lm63_group_extra_lut = { .attrs = lm63_attributes_extra_lut, }; /* * 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 lm63_data *data = dev_get_drvdata(dev); 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; } static const struct attribute_group lm63_group = { .is_visible = lm63_attribute_mode, .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, }; /* * Real code */ /* Return 0 if detection is successful, -ENODEV otherwise */ static int lm63_detect(struct i2c_client *client, struct i2c_board_info *info) { struct i2c_adapter *adapter = client->adapter; u8 man_id, chip_id, reg_config1, reg_config2; u8 reg_alert_status, reg_alert_mask; int address = client->addr; if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) return -ENODEV; man_id = i2c_smbus_read_byte_data(client, LM63_REG_MAN_ID); chip_id = i2c_smbus_read_byte_data(client, LM63_REG_CHIP_ID); reg_config1 = i2c_smbus_read_byte_data(client, LM63_REG_CONFIG1); reg_config2 = i2c_smbus_read_byte_data(client, LM63_REG_CONFIG2); reg_alert_status = i2c_smbus_read_byte_data(client, LM63_REG_ALERT_STATUS); reg_alert_mask = i2c_smbus_read_byte_data(client, LM63_REG_ALERT_MASK); if (man_id != 0x01 /* National Semiconductor */ || (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)\n", man_id, chip_id); return -ENODEV; } 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); else if (chip_id == 0x49 && address == 0x4c) strlcpy(info->type, "lm96163", I2C_NAME_SIZE); else return -ENODEV; return 0; } /* * Ideally we shouldn't have to initialize anything, since the BIOS * should have taken care of everything */ static void lm63_init_client(struct lm63_data *data) { struct i2c_client *client = data->client; struct device *dev = &client->dev; u8 convrate; 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(dev, "Switching to operational mode\n"); data->config &= 0xA7; i2c_smbus_write_byte_data(client, LM63_REG_CONFIG1, data->config); } /* Tachometer is always enabled on LM64 */ if (data->kind == lm64) data->config |= 0x04; /* 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; switch (data->kind) { case lm63: case lm64: data->max_convrate_hz = LM63_MAX_CONVRATE_HZ; data->lut_size = 8; break; case lm96163: data->max_convrate_hz = LM96163_MAX_CONVRATE_HZ; data->lut_size = 12; data->trutherm = i2c_smbus_read_byte_data(client, LM96163_REG_TRUTHERM) & 0x02; 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); /* * For LM96163, check if high resolution PWM * and unsigned temperature format is enabled. */ if (data->kind == lm96163) { u8 config_enhanced = i2c_smbus_read_byte_data(client, LM96163_REG_CONFIG_ENHANCED); if (config_enhanced & 0x20) data->lut_temp_highres = true; if ((config_enhanced & 0x10) && !(data->config_fan & 0x08) && data->pwm1_freq == 8) data->pwm_highres = true; if (config_enhanced & 0x08) data->remote_unsigned = true; } /* Show some debug info about the LM63 configuration */ if (data->kind == lm63) dev_dbg(dev, "Alert/tach pin configured for %s\n", (data->config & 0x04) ? "tachometer input" : "alert output"); dev_dbg(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(dev, "PWM output active %s, %s mode\n", (data->config_fan & 0x10) ? "low" : "high", (data->config_fan & 0x20) ? "manual" : "auto"); } static int lm63_probe(struct i2c_client *client, const struct i2c_device_id *id) { struct device *dev = &client->dev; struct device *hwmon_dev; struct lm63_data *data; int groups = 0; data = devm_kzalloc(dev, sizeof(struct lm63_data), GFP_KERNEL); if (!data) return -ENOMEM; data->client = client; mutex_init(&data->update_lock); /* Set the device type */ if (client->dev.of_node) data->kind = (enum chips)of_device_get_match_data(&client->dev); else data->kind = id->driver_data; if (data->kind == lm64) data->temp2_offset = 16000; /* Initialize chip */ lm63_init_client(data); /* Register sysfs hooks */ data->groups[groups++] = &lm63_group; if (data->config & 0x04) /* tachometer enabled */ data->groups[groups++] = &lm63_group_fan1; if (data->kind == lm96163) { data->groups[groups++] = &lm63_group_temp2_type; data->groups[groups++] = &lm63_group_extra_lut; } hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name, data, data->groups); return PTR_ERR_OR_ZERO(hwmon_dev); } /* * Driver data (common to all clients) */ static const struct i2c_device_id lm63_id[] = { { "lm63", lm63 }, { "lm64", lm64 }, { "lm96163", lm96163 }, { } }; MODULE_DEVICE_TABLE(i2c, lm63_id); static const struct of_device_id __maybe_unused lm63_of_match[] = { { .compatible = "national,lm63", .data = (void *)lm63 }, { .compatible = "national,lm64", .data = (void *)lm64 }, { .compatible = "national,lm96163", .data = (void *)lm96163 }, { }, }; MODULE_DEVICE_TABLE(of, lm63_of_match); static struct i2c_driver lm63_driver = { .class = I2C_CLASS_HWMON, .driver = { .name = "lm63", .of_match_table = of_match_ptr(lm63_of_match), }, .probe = lm63_probe, .id_table = lm63_id, .detect = lm63_detect, .address_list = normal_i2c, }; module_i2c_driver(lm63_driver); MODULE_AUTHOR("Jean Delvare <jdelvare@suse.de>"); MODULE_DESCRIPTION("LM63 driver"); MODULE_LICENSE("GPL");
Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.
Created with Cregit http://github.com/cregit/cregit
Version 2.0-RC1