| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Axel Lin | 2647 | 52.40% | 3 | 13.04% |
| Jean Delvare | 1043 | 20.65% | 9 | 39.13% |
| maartendeprez@scarlet.be | 1027 | 20.33% | 1 | 4.35% |
| Guenter Roeck | 292 | 5.78% | 4 | 17.39% |
| Mark M. Hoffman | 14 | 0.28% | 2 | 8.70% |
| Julia Lawall | 13 | 0.26% | 1 | 4.35% |
| Ingo Molnar | 13 | 0.26% | 1 | 4.35% |
| Thomas Gleixner | 2 | 0.04% | 1 | 4.35% |
| Jan Engelhardt | 1 | 0.02% | 1 | 4.35% |
| Total | 5052 | 23 |
// SPDX-License-Identifier: GPL-2.0-or-later /* * gl520sm.c - Part of lm_sensors, Linux kernel modules for hardware * monitoring * Copyright (c) 1998, 1999 Frodo Looijaard <frodol@dds.nl>, * Kyösti Mälkki <kmalkki@cc.hut.fi> * Copyright (c) 2005 Maarten Deprez <maartendeprez@users.sourceforge.net> */ #include <linux/module.h> #include <linux/init.h> #include <linux/slab.h> #include <linux/jiffies.h> #include <linux/i2c.h> #include <linux/hwmon.h> #include <linux/hwmon-sysfs.h> #include <linux/hwmon-vid.h> #include <linux/err.h> #include <linux/mutex.h> #include <linux/sysfs.h> /* Type of the extra sensor */ static unsigned short extra_sensor_type; module_param(extra_sensor_type, ushort, 0); MODULE_PARM_DESC(extra_sensor_type, "Type of extra sensor (0=autodetect, 1=temperature, 2=voltage)"); /* Addresses to scan */ static const unsigned short normal_i2c[] = { 0x2c, 0x2d, I2C_CLIENT_END }; /* * Many GL520 constants specified below * One of the inputs can be configured as either temp or voltage. * That's why _TEMP2 and _IN4 access the same register */ /* The GL520 registers */ #define GL520_REG_CHIP_ID 0x00 #define GL520_REG_REVISION 0x01 #define GL520_REG_CONF 0x03 #define GL520_REG_MASK 0x11 #define GL520_REG_VID_INPUT 0x02 static const u8 GL520_REG_IN_INPUT[] = { 0x15, 0x14, 0x13, 0x0d, 0x0e }; static const u8 GL520_REG_IN_LIMIT[] = { 0x0c, 0x09, 0x0a, 0x0b }; static const u8 GL520_REG_IN_MIN[] = { 0x0c, 0x09, 0x0a, 0x0b, 0x18 }; static const u8 GL520_REG_IN_MAX[] = { 0x0c, 0x09, 0x0a, 0x0b, 0x17 }; static const u8 GL520_REG_TEMP_INPUT[] = { 0x04, 0x0e }; static const u8 GL520_REG_TEMP_MAX[] = { 0x05, 0x17 }; static const u8 GL520_REG_TEMP_MAX_HYST[] = { 0x06, 0x18 }; #define GL520_REG_FAN_INPUT 0x07 #define GL520_REG_FAN_MIN 0x08 #define GL520_REG_FAN_DIV 0x0f #define GL520_REG_FAN_OFF GL520_REG_FAN_DIV #define GL520_REG_ALARMS 0x12 #define GL520_REG_BEEP_MASK 0x10 #define GL520_REG_BEEP_ENABLE GL520_REG_CONF /* Client data */ struct gl520_data { struct i2c_client *client; const struct attribute_group *groups[3]; struct mutex update_lock; char valid; /* zero until the following fields are valid */ unsigned long last_updated; /* in jiffies */ u8 vid; u8 vrm; u8 in_input[5]; /* [0] = VVD */ u8 in_min[5]; /* [0] = VDD */ u8 in_max[5]; /* [0] = VDD */ u8 fan_input[2]; u8 fan_min[2]; u8 fan_div[2]; u8 fan_off; u8 temp_input[2]; u8 temp_max[2]; u8 temp_max_hyst[2]; u8 alarms; u8 beep_enable; u8 beep_mask; u8 alarm_mask; u8 two_temps; }; /* * Registers 0x07 to 0x0c are word-sized, others are byte-sized * GL520 uses a high-byte first convention */ static int gl520_read_value(struct i2c_client *client, u8 reg) { if ((reg >= 0x07) && (reg <= 0x0c)) return i2c_smbus_read_word_swapped(client, reg); else return i2c_smbus_read_byte_data(client, reg); } static int gl520_write_value(struct i2c_client *client, u8 reg, u16 value) { if ((reg >= 0x07) && (reg <= 0x0c)) return i2c_smbus_write_word_swapped(client, reg, value); else return i2c_smbus_write_byte_data(client, reg, value); } static struct gl520_data *gl520_update_device(struct device *dev) { struct gl520_data *data = dev_get_drvdata(dev); struct i2c_client *client = data->client; int val, i; mutex_lock(&data->update_lock); if (time_after(jiffies, data->last_updated + 2 * HZ) || !data->valid) { dev_dbg(&client->dev, "Starting gl520sm update\n"); data->alarms = gl520_read_value(client, GL520_REG_ALARMS); data->beep_mask = gl520_read_value(client, GL520_REG_BEEP_MASK); data->vid = gl520_read_value(client, GL520_REG_VID_INPUT) & 0x1f; for (i = 0; i < 4; i++) { data->in_input[i] = gl520_read_value(client, GL520_REG_IN_INPUT[i]); val = gl520_read_value(client, GL520_REG_IN_LIMIT[i]); data->in_min[i] = val & 0xff; data->in_max[i] = (val >> 8) & 0xff; } val = gl520_read_value(client, GL520_REG_FAN_INPUT); data->fan_input[0] = (val >> 8) & 0xff; data->fan_input[1] = val & 0xff; val = gl520_read_value(client, GL520_REG_FAN_MIN); data->fan_min[0] = (val >> 8) & 0xff; data->fan_min[1] = val & 0xff; data->temp_input[0] = gl520_read_value(client, GL520_REG_TEMP_INPUT[0]); data->temp_max[0] = gl520_read_value(client, GL520_REG_TEMP_MAX[0]); data->temp_max_hyst[0] = gl520_read_value(client, GL520_REG_TEMP_MAX_HYST[0]); val = gl520_read_value(client, GL520_REG_FAN_DIV); data->fan_div[0] = (val >> 6) & 0x03; data->fan_div[1] = (val >> 4) & 0x03; data->fan_off = (val >> 2) & 0x01; data->alarms &= data->alarm_mask; val = gl520_read_value(client, GL520_REG_CONF); data->beep_enable = !((val >> 2) & 1); /* Temp1 and Vin4 are the same input */ if (data->two_temps) { data->temp_input[1] = gl520_read_value(client, GL520_REG_TEMP_INPUT[1]); data->temp_max[1] = gl520_read_value(client, GL520_REG_TEMP_MAX[1]); data->temp_max_hyst[1] = gl520_read_value(client, GL520_REG_TEMP_MAX_HYST[1]); } else { data->in_input[4] = gl520_read_value(client, GL520_REG_IN_INPUT[4]); data->in_min[4] = gl520_read_value(client, GL520_REG_IN_MIN[4]); data->in_max[4] = gl520_read_value(client, GL520_REG_IN_MAX[4]); } data->last_updated = jiffies; data->valid = 1; } mutex_unlock(&data->update_lock); return data; } /* * Sysfs stuff */ static ssize_t cpu0_vid_show(struct device *dev, struct device_attribute *attr, char *buf) { struct gl520_data *data = gl520_update_device(dev); return sprintf(buf, "%u\n", vid_from_reg(data->vid, data->vrm)); } static DEVICE_ATTR_RO(cpu0_vid); #define VDD_FROM_REG(val) DIV_ROUND_CLOSEST((val) * 95, 4) #define VDD_CLAMP(val) clamp_val(val, 0, 255 * 95 / 4) #define VDD_TO_REG(val) DIV_ROUND_CLOSEST(VDD_CLAMP(val) * 4, 95) #define IN_FROM_REG(val) ((val) * 19) #define IN_CLAMP(val) clamp_val(val, 0, 255 * 19) #define IN_TO_REG(val) DIV_ROUND_CLOSEST(IN_CLAMP(val), 19) static ssize_t in_input_show(struct device *dev, struct device_attribute *attr, char *buf) { int n = to_sensor_dev_attr(attr)->index; struct gl520_data *data = gl520_update_device(dev); u8 r = data->in_input[n]; if (n == 0) return sprintf(buf, "%d\n", VDD_FROM_REG(r)); else return sprintf(buf, "%d\n", IN_FROM_REG(r)); } static ssize_t in_min_show(struct device *dev, struct device_attribute *attr, char *buf) { int n = to_sensor_dev_attr(attr)->index; struct gl520_data *data = gl520_update_device(dev); u8 r = data->in_min[n]; if (n == 0) return sprintf(buf, "%d\n", VDD_FROM_REG(r)); else return sprintf(buf, "%d\n", IN_FROM_REG(r)); } static ssize_t in_max_show(struct device *dev, struct device_attribute *attr, char *buf) { int n = to_sensor_dev_attr(attr)->index; struct gl520_data *data = gl520_update_device(dev); u8 r = data->in_max[n]; if (n == 0) return sprintf(buf, "%d\n", VDD_FROM_REG(r)); else return sprintf(buf, "%d\n", IN_FROM_REG(r)); } static ssize_t in_min_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct gl520_data *data = dev_get_drvdata(dev); struct i2c_client *client = data->client; int n = to_sensor_dev_attr(attr)->index; u8 r; long v; int err; err = kstrtol(buf, 10, &v); if (err) return err; mutex_lock(&data->update_lock); if (n == 0) r = VDD_TO_REG(v); else r = IN_TO_REG(v); data->in_min[n] = r; if (n < 4) gl520_write_value(client, GL520_REG_IN_MIN[n], (gl520_read_value(client, GL520_REG_IN_MIN[n]) & ~0xff) | r); else gl520_write_value(client, GL520_REG_IN_MIN[n], r); mutex_unlock(&data->update_lock); return count; } static ssize_t in_max_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct gl520_data *data = dev_get_drvdata(dev); struct i2c_client *client = data->client; int n = to_sensor_dev_attr(attr)->index; u8 r; long v; int err; err = kstrtol(buf, 10, &v); if (err) return err; if (n == 0) r = VDD_TO_REG(v); else r = IN_TO_REG(v); mutex_lock(&data->update_lock); data->in_max[n] = r; if (n < 4) gl520_write_value(client, GL520_REG_IN_MAX[n], (gl520_read_value(client, GL520_REG_IN_MAX[n]) & ~0xff00) | (r << 8)); else gl520_write_value(client, GL520_REG_IN_MAX[n], r); mutex_unlock(&data->update_lock); return count; } static SENSOR_DEVICE_ATTR_RO(in0_input, in_input, 0); static SENSOR_DEVICE_ATTR_RO(in1_input, in_input, 1); static SENSOR_DEVICE_ATTR_RO(in2_input, in_input, 2); static SENSOR_DEVICE_ATTR_RO(in3_input, in_input, 3); static SENSOR_DEVICE_ATTR_RO(in4_input, in_input, 4); static SENSOR_DEVICE_ATTR_RW(in0_min, in_min, 0); static SENSOR_DEVICE_ATTR_RW(in1_min, in_min, 1); static SENSOR_DEVICE_ATTR_RW(in2_min, in_min, 2); static SENSOR_DEVICE_ATTR_RW(in3_min, in_min, 3); static SENSOR_DEVICE_ATTR_RW(in4_min, in_min, 4); static SENSOR_DEVICE_ATTR_RW(in0_max, in_max, 0); static SENSOR_DEVICE_ATTR_RW(in1_max, in_max, 1); static SENSOR_DEVICE_ATTR_RW(in2_max, in_max, 2); static SENSOR_DEVICE_ATTR_RW(in3_max, in_max, 3); static SENSOR_DEVICE_ATTR_RW(in4_max, in_max, 4); #define DIV_FROM_REG(val) (1 << (val)) #define FAN_FROM_REG(val, div) ((val) == 0 ? 0 : (480000 / ((val) << (div)))) #define FAN_BASE(div) (480000 >> (div)) #define FAN_CLAMP(val, div) clamp_val(val, FAN_BASE(div) / 255, \ FAN_BASE(div)) #define FAN_TO_REG(val, div) ((val) == 0 ? 0 : \ DIV_ROUND_CLOSEST(480000, \ FAN_CLAMP(val, div) << (div))) static ssize_t fan_input_show(struct device *dev, struct device_attribute *attr, char *buf) { int n = to_sensor_dev_attr(attr)->index; struct gl520_data *data = gl520_update_device(dev); return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_input[n], data->fan_div[n])); } static ssize_t fan_min_show(struct device *dev, struct device_attribute *attr, char *buf) { int n = to_sensor_dev_attr(attr)->index; struct gl520_data *data = gl520_update_device(dev); return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[n], data->fan_div[n])); } static ssize_t fan_div_show(struct device *dev, struct device_attribute *attr, char *buf) { int n = to_sensor_dev_attr(attr)->index; struct gl520_data *data = gl520_update_device(dev); return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[n])); } static ssize_t fan1_off_show(struct device *dev, struct device_attribute *attr, char *buf) { struct gl520_data *data = gl520_update_device(dev); return sprintf(buf, "%d\n", data->fan_off); } static ssize_t fan_min_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct gl520_data *data = dev_get_drvdata(dev); struct i2c_client *client = data->client; int n = to_sensor_dev_attr(attr)->index; u8 r; unsigned long v; int err; err = kstrtoul(buf, 10, &v); if (err) return err; mutex_lock(&data->update_lock); r = FAN_TO_REG(v, data->fan_div[n]); data->fan_min[n] = r; if (n == 0) gl520_write_value(client, GL520_REG_FAN_MIN, (gl520_read_value(client, GL520_REG_FAN_MIN) & ~0xff00) | (r << 8)); else gl520_write_value(client, GL520_REG_FAN_MIN, (gl520_read_value(client, GL520_REG_FAN_MIN) & ~0xff) | r); data->beep_mask = gl520_read_value(client, GL520_REG_BEEP_MASK); if (data->fan_min[n] == 0) data->alarm_mask &= (n == 0) ? ~0x20 : ~0x40; else data->alarm_mask |= (n == 0) ? 0x20 : 0x40; data->beep_mask &= data->alarm_mask; gl520_write_value(client, GL520_REG_BEEP_MASK, data->beep_mask); mutex_unlock(&data->update_lock); return count; } static ssize_t fan_div_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct gl520_data *data = dev_get_drvdata(dev); struct i2c_client *client = data->client; int n = to_sensor_dev_attr(attr)->index; u8 r; unsigned long v; int err; err = kstrtoul(buf, 10, &v); if (err) return err; switch (v) { case 1: r = 0; break; case 2: r = 1; break; case 4: r = 2; break; case 8: r = 3; break; default: dev_err(&client->dev, "fan_div value %ld not supported. Choose one of 1, 2, 4 or 8!\n", v); return -EINVAL; } mutex_lock(&data->update_lock); data->fan_div[n] = r; if (n == 0) gl520_write_value(client, GL520_REG_FAN_DIV, (gl520_read_value(client, GL520_REG_FAN_DIV) & ~0xc0) | (r << 6)); else gl520_write_value(client, GL520_REG_FAN_DIV, (gl520_read_value(client, GL520_REG_FAN_DIV) & ~0x30) | (r << 4)); mutex_unlock(&data->update_lock); return count; } static ssize_t fan1_off_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct gl520_data *data = dev_get_drvdata(dev); struct i2c_client *client = data->client; u8 r; unsigned long v; int err; err = kstrtoul(buf, 10, &v); if (err) return err; r = (v ? 1 : 0); mutex_lock(&data->update_lock); data->fan_off = r; gl520_write_value(client, GL520_REG_FAN_OFF, (gl520_read_value(client, GL520_REG_FAN_OFF) & ~0x0c) | (r << 2)); mutex_unlock(&data->update_lock); return count; } static SENSOR_DEVICE_ATTR_RO(fan1_input, fan_input, 0); static SENSOR_DEVICE_ATTR_RO(fan2_input, fan_input, 1); static SENSOR_DEVICE_ATTR_RW(fan1_min, fan_min, 0); static SENSOR_DEVICE_ATTR_RW(fan2_min, fan_min, 1); static SENSOR_DEVICE_ATTR_RW(fan1_div, fan_div, 0); static SENSOR_DEVICE_ATTR_RW(fan2_div, fan_div, 1); static DEVICE_ATTR_RW(fan1_off); #define TEMP_FROM_REG(val) (((val) - 130) * 1000) #define TEMP_CLAMP(val) clamp_val(val, -130000, 125000) #define TEMP_TO_REG(val) (DIV_ROUND_CLOSEST(TEMP_CLAMP(val), 1000) + 130) static ssize_t temp_input_show(struct device *dev, struct device_attribute *attr, char *buf) { int n = to_sensor_dev_attr(attr)->index; struct gl520_data *data = gl520_update_device(dev); return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_input[n])); } static ssize_t temp_max_show(struct device *dev, struct device_attribute *attr, char *buf) { int n = to_sensor_dev_attr(attr)->index; struct gl520_data *data = gl520_update_device(dev); return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max[n])); } static ssize_t temp_max_hyst_show(struct device *dev, struct device_attribute *attr, char *buf) { int n = to_sensor_dev_attr(attr)->index; struct gl520_data *data = gl520_update_device(dev); return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max_hyst[n])); } static ssize_t temp_max_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct gl520_data *data = dev_get_drvdata(dev); struct i2c_client *client = data->client; int n = to_sensor_dev_attr(attr)->index; long v; int err; err = kstrtol(buf, 10, &v); if (err) return err; mutex_lock(&data->update_lock); data->temp_max[n] = TEMP_TO_REG(v); gl520_write_value(client, GL520_REG_TEMP_MAX[n], data->temp_max[n]); mutex_unlock(&data->update_lock); return count; } static ssize_t temp_max_hyst_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct gl520_data *data = dev_get_drvdata(dev); struct i2c_client *client = data->client; int n = to_sensor_dev_attr(attr)->index; long v; int err; err = kstrtol(buf, 10, &v); if (err) return err; mutex_lock(&data->update_lock); data->temp_max_hyst[n] = TEMP_TO_REG(v); gl520_write_value(client, GL520_REG_TEMP_MAX_HYST[n], data->temp_max_hyst[n]); mutex_unlock(&data->update_lock); return count; } static SENSOR_DEVICE_ATTR_RO(temp1_input, temp_input, 0); static SENSOR_DEVICE_ATTR_RO(temp2_input, temp_input, 1); static SENSOR_DEVICE_ATTR_RW(temp1_max, temp_max, 0); static SENSOR_DEVICE_ATTR_RW(temp2_max, temp_max, 1); static SENSOR_DEVICE_ATTR_RW(temp1_max_hyst, temp_max_hyst, 0); static SENSOR_DEVICE_ATTR_RW(temp2_max_hyst, temp_max_hyst, 1); static ssize_t alarms_show(struct device *dev, struct device_attribute *attr, char *buf) { struct gl520_data *data = gl520_update_device(dev); return sprintf(buf, "%d\n", data->alarms); } static ssize_t beep_enable_show(struct device *dev, struct device_attribute *attr, char *buf) { struct gl520_data *data = gl520_update_device(dev); return sprintf(buf, "%d\n", data->beep_enable); } static ssize_t beep_mask_show(struct device *dev, struct device_attribute *attr, char *buf) { struct gl520_data *data = gl520_update_device(dev); return sprintf(buf, "%d\n", data->beep_mask); } static ssize_t beep_enable_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct gl520_data *data = dev_get_drvdata(dev); struct i2c_client *client = data->client; u8 r; unsigned long v; int err; err = kstrtoul(buf, 10, &v); if (err) return err; r = (v ? 0 : 1); mutex_lock(&data->update_lock); data->beep_enable = !r; gl520_write_value(client, GL520_REG_BEEP_ENABLE, (gl520_read_value(client, GL520_REG_BEEP_ENABLE) & ~0x04) | (r << 2)); mutex_unlock(&data->update_lock); return count; } static ssize_t beep_mask_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct gl520_data *data = dev_get_drvdata(dev); struct i2c_client *client = data->client; unsigned long r; int err; err = kstrtoul(buf, 10, &r); if (err) return err; mutex_lock(&data->update_lock); r &= data->alarm_mask; data->beep_mask = r; gl520_write_value(client, GL520_REG_BEEP_MASK, r); mutex_unlock(&data->update_lock); return count; } static DEVICE_ATTR_RO(alarms); static DEVICE_ATTR_RW(beep_enable); static DEVICE_ATTR_RW(beep_mask); static ssize_t alarm_show(struct device *dev, struct device_attribute *attr, char *buf) { int bit_nr = to_sensor_dev_attr(attr)->index; struct gl520_data *data = gl520_update_device(dev); return sprintf(buf, "%d\n", (data->alarms >> bit_nr) & 1); } static SENSOR_DEVICE_ATTR_RO(in0_alarm, alarm, 0); static SENSOR_DEVICE_ATTR_RO(in1_alarm, alarm, 1); static SENSOR_DEVICE_ATTR_RO(in2_alarm, alarm, 2); static SENSOR_DEVICE_ATTR_RO(in3_alarm, alarm, 3); static SENSOR_DEVICE_ATTR_RO(temp1_alarm, alarm, 4); static SENSOR_DEVICE_ATTR_RO(fan1_alarm, alarm, 5); static SENSOR_DEVICE_ATTR_RO(fan2_alarm, alarm, 6); static SENSOR_DEVICE_ATTR_RO(temp2_alarm, alarm, 7); static SENSOR_DEVICE_ATTR_RO(in4_alarm, alarm, 7); static ssize_t beep_show(struct device *dev, struct device_attribute *attr, char *buf) { int bitnr = to_sensor_dev_attr(attr)->index; struct gl520_data *data = gl520_update_device(dev); return sprintf(buf, "%d\n", (data->beep_mask >> bitnr) & 1); } static ssize_t beep_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct gl520_data *data = dev_get_drvdata(dev); struct i2c_client *client = data->client; int bitnr = to_sensor_dev_attr(attr)->index; unsigned long bit; int err; err = kstrtoul(buf, 10, &bit); if (err) return err; if (bit & ~1) return -EINVAL; mutex_lock(&data->update_lock); data->beep_mask = gl520_read_value(client, GL520_REG_BEEP_MASK); if (bit) data->beep_mask |= (1 << bitnr); else data->beep_mask &= ~(1 << bitnr); gl520_write_value(client, GL520_REG_BEEP_MASK, data->beep_mask); mutex_unlock(&data->update_lock); return count; } static SENSOR_DEVICE_ATTR_RW(in0_beep, beep, 0); static SENSOR_DEVICE_ATTR_RW(in1_beep, beep, 1); static SENSOR_DEVICE_ATTR_RW(in2_beep, beep, 2); static SENSOR_DEVICE_ATTR_RW(in3_beep, beep, 3); static SENSOR_DEVICE_ATTR_RW(temp1_beep, beep, 4); static SENSOR_DEVICE_ATTR_RW(fan1_beep, beep, 5); static SENSOR_DEVICE_ATTR_RW(fan2_beep, beep, 6); static SENSOR_DEVICE_ATTR_RW(temp2_beep, beep, 7); static SENSOR_DEVICE_ATTR_RW(in4_beep, beep, 7); static struct attribute *gl520_attributes[] = { &dev_attr_cpu0_vid.attr, &sensor_dev_attr_in0_input.dev_attr.attr, &sensor_dev_attr_in0_min.dev_attr.attr, &sensor_dev_attr_in0_max.dev_attr.attr, &sensor_dev_attr_in0_alarm.dev_attr.attr, &sensor_dev_attr_in0_beep.dev_attr.attr, &sensor_dev_attr_in1_input.dev_attr.attr, &sensor_dev_attr_in1_min.dev_attr.attr, &sensor_dev_attr_in1_max.dev_attr.attr, &sensor_dev_attr_in1_alarm.dev_attr.attr, &sensor_dev_attr_in1_beep.dev_attr.attr, &sensor_dev_attr_in2_input.dev_attr.attr, &sensor_dev_attr_in2_min.dev_attr.attr, &sensor_dev_attr_in2_max.dev_attr.attr, &sensor_dev_attr_in2_alarm.dev_attr.attr, &sensor_dev_attr_in2_beep.dev_attr.attr, &sensor_dev_attr_in3_input.dev_attr.attr, &sensor_dev_attr_in3_min.dev_attr.attr, &sensor_dev_attr_in3_max.dev_attr.attr, &sensor_dev_attr_in3_alarm.dev_attr.attr, &sensor_dev_attr_in3_beep.dev_attr.attr, &sensor_dev_attr_fan1_input.dev_attr.attr, &sensor_dev_attr_fan1_min.dev_attr.attr, &sensor_dev_attr_fan1_div.dev_attr.attr, &sensor_dev_attr_fan1_alarm.dev_attr.attr, &sensor_dev_attr_fan1_beep.dev_attr.attr, &dev_attr_fan1_off.attr, &sensor_dev_attr_fan2_input.dev_attr.attr, &sensor_dev_attr_fan2_min.dev_attr.attr, &sensor_dev_attr_fan2_div.dev_attr.attr, &sensor_dev_attr_fan2_alarm.dev_attr.attr, &sensor_dev_attr_fan2_beep.dev_attr.attr, &sensor_dev_attr_temp1_input.dev_attr.attr, &sensor_dev_attr_temp1_max.dev_attr.attr, &sensor_dev_attr_temp1_max_hyst.dev_attr.attr, &sensor_dev_attr_temp1_alarm.dev_attr.attr, &sensor_dev_attr_temp1_beep.dev_attr.attr, &dev_attr_alarms.attr, &dev_attr_beep_enable.attr, &dev_attr_beep_mask.attr, NULL }; static const struct attribute_group gl520_group = { .attrs = gl520_attributes, }; static struct attribute *gl520_attributes_in4[] = { &sensor_dev_attr_in4_input.dev_attr.attr, &sensor_dev_attr_in4_min.dev_attr.attr, &sensor_dev_attr_in4_max.dev_attr.attr, &sensor_dev_attr_in4_alarm.dev_attr.attr, &sensor_dev_attr_in4_beep.dev_attr.attr, NULL }; static struct attribute *gl520_attributes_temp2[] = { &sensor_dev_attr_temp2_input.dev_attr.attr, &sensor_dev_attr_temp2_max.dev_attr.attr, &sensor_dev_attr_temp2_max_hyst.dev_attr.attr, &sensor_dev_attr_temp2_alarm.dev_attr.attr, &sensor_dev_attr_temp2_beep.dev_attr.attr, NULL }; static const struct attribute_group gl520_group_in4 = { .attrs = gl520_attributes_in4, }; static const struct attribute_group gl520_group_temp2 = { .attrs = gl520_attributes_temp2, }; /* * Real code */ /* Return 0 if detection is successful, -ENODEV otherwise */ static int gl520_detect(struct i2c_client *client, struct i2c_board_info *info) { struct i2c_adapter *adapter = client->adapter; if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA | I2C_FUNC_SMBUS_WORD_DATA)) return -ENODEV; /* Determine the chip type. */ if ((gl520_read_value(client, GL520_REG_CHIP_ID) != 0x20) || ((gl520_read_value(client, GL520_REG_REVISION) & 0x7f) != 0x00) || ((gl520_read_value(client, GL520_REG_CONF) & 0x80) != 0x00)) { dev_dbg(&client->dev, "Unknown chip type, skipping\n"); return -ENODEV; } strlcpy(info->type, "gl520sm", I2C_NAME_SIZE); return 0; } /* Called when we have found a new GL520SM. */ static void gl520_init_client(struct i2c_client *client) { struct gl520_data *data = i2c_get_clientdata(client); u8 oldconf, conf; conf = oldconf = gl520_read_value(client, GL520_REG_CONF); data->alarm_mask = 0xff; data->vrm = vid_which_vrm(); if (extra_sensor_type == 1) conf &= ~0x10; else if (extra_sensor_type == 2) conf |= 0x10; data->two_temps = !(conf & 0x10); /* If IRQ# is disabled, we can safely force comparator mode */ if (!(conf & 0x20)) conf &= 0xf7; /* Enable monitoring if needed */ conf |= 0x40; if (conf != oldconf) gl520_write_value(client, GL520_REG_CONF, conf); gl520_update_device(&(client->dev)); if (data->fan_min[0] == 0) data->alarm_mask &= ~0x20; if (data->fan_min[1] == 0) data->alarm_mask &= ~0x40; data->beep_mask &= data->alarm_mask; gl520_write_value(client, GL520_REG_BEEP_MASK, data->beep_mask); } static int gl520_probe(struct i2c_client *client, const struct i2c_device_id *id) { struct device *dev = &client->dev; struct device *hwmon_dev; struct gl520_data *data; data = devm_kzalloc(dev, sizeof(struct gl520_data), GFP_KERNEL); if (!data) return -ENOMEM; i2c_set_clientdata(client, data); mutex_init(&data->update_lock); data->client = client; /* Initialize the GL520SM chip */ gl520_init_client(client); /* sysfs hooks */ data->groups[0] = &gl520_group; if (data->two_temps) data->groups[1] = &gl520_group_temp2; else data->groups[1] = &gl520_group_in4; hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name, data, data->groups); return PTR_ERR_OR_ZERO(hwmon_dev); } static const struct i2c_device_id gl520_id[] = { { "gl520sm", 0 }, { } }; MODULE_DEVICE_TABLE(i2c, gl520_id); static struct i2c_driver gl520_driver = { .class = I2C_CLASS_HWMON, .driver = { .name = "gl520sm", }, .probe = gl520_probe, .id_table = gl520_id, .detect = gl520_detect, .address_list = normal_i2c, }; module_i2c_driver(gl520_driver); MODULE_AUTHOR("Frodo Looijaard <frodol@dds.nl>, " "Kyösti Mälkki <kmalkki@cc.hut.fi>, " "Maarten Deprez <maartendeprez@users.sourceforge.net>"); MODULE_DESCRIPTION("GL520SM driver"); MODULE_LICENSE("GPL");
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