| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Axel Lin | 1902 | 51.70% | 3 | 12.50% |
| Jean Delvare | 1694 | 46.05% | 11 | 45.83% |
| Guenter Roeck | 49 | 1.33% | 3 | 12.50% |
| Mark M. Hoffman | 16 | 0.43% | 3 | 12.50% |
| Yani Ioannou | 10 | 0.27% | 1 | 4.17% |
| Ingo Molnar | 4 | 0.11% | 1 | 4.17% |
| Alexey Dobriyan | 3 | 0.08% | 1 | 4.17% |
| Laurent Riffard | 1 | 0.03% | 1 | 4.17% |
| Total | 3679 | 24 |
/* * gl518sm.c - Part of lm_sensors, Linux kernel modules for hardware * monitoring * Copyright (C) 1998, 1999 Frodo Looijaard <frodol@dds.nl> and * Kyosti Malkki <kmalkki@cc.hut.fi> * Copyright (C) 2004 Hong-Gunn Chew <hglinux@gunnet.org> and * Jean Delvare <jdelvare@suse.de> * * 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. * * Ported to Linux 2.6 by Hong-Gunn Chew with the help of Jean Delvare * and advice of Greg Kroah-Hartman. * * Notes about the port: * Release 0x00 of the GL518SM chipset doesn't support reading of in0, * in1 nor in2. The original driver had an ugly workaround to get them * anyway (changing limits and watching alarms trigger and wear off). * We did not keep that part of the original driver in the Linux 2.6 * version, since it was making the driver significantly more complex * with no real benefit. */ #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/err.h> #include <linux/mutex.h> #include <linux/sysfs.h> /* Addresses to scan */ static const unsigned short normal_i2c[] = { 0x2c, 0x2d, I2C_CLIENT_END }; enum chips { gl518sm_r00, gl518sm_r80 }; /* Many GL518 constants specified below */ /* The GL518 registers */ #define GL518_REG_CHIP_ID 0x00 #define GL518_REG_REVISION 0x01 #define GL518_REG_VENDOR_ID 0x02 #define GL518_REG_CONF 0x03 #define GL518_REG_TEMP_IN 0x04 #define GL518_REG_TEMP_MAX 0x05 #define GL518_REG_TEMP_HYST 0x06 #define GL518_REG_FAN_COUNT 0x07 #define GL518_REG_FAN_LIMIT 0x08 #define GL518_REG_VIN1_LIMIT 0x09 #define GL518_REG_VIN2_LIMIT 0x0a #define GL518_REG_VIN3_LIMIT 0x0b #define GL518_REG_VDD_LIMIT 0x0c #define GL518_REG_VIN3 0x0d #define GL518_REG_MISC 0x0f #define GL518_REG_ALARM 0x10 #define GL518_REG_MASK 0x11 #define GL518_REG_INT 0x12 #define GL518_REG_VIN2 0x13 #define GL518_REG_VIN1 0x14 #define GL518_REG_VDD 0x15 /* * Conversions. Rounding and limit checking is only done on the TO_REG * variants. Note that you should be a bit careful with which arguments * these macros are called: arguments may be evaluated more than once. * Fixing this is just not worth it. */ #define RAW_FROM_REG(val) val #define BOOL_FROM_REG(val) ((val) ? 0 : 1) #define BOOL_TO_REG(val) ((val) ? 0 : 1) #define TEMP_CLAMP(val) clamp_val(val, -119000, 136000) #define TEMP_TO_REG(val) (DIV_ROUND_CLOSEST(TEMP_CLAMP(val), 1000) + 119) #define TEMP_FROM_REG(val) (((val) - 119) * 1000) static inline u8 FAN_TO_REG(long rpm, int div) { long rpmdiv; if (rpm == 0) return 0; rpmdiv = clamp_val(rpm, 1, 960000) * div; return clamp_val((480000 + rpmdiv / 2) / rpmdiv, 1, 255); } #define FAN_FROM_REG(val, div) ((val) == 0 ? 0 : (480000 / ((val) * (div)))) #define IN_CLAMP(val) clamp_val(val, 0, 255 * 19) #define IN_TO_REG(val) DIV_ROUND_CLOSEST(IN_CLAMP(val), 19) #define IN_FROM_REG(val) ((val) * 19) #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 VDD_FROM_REG(val) DIV_ROUND_CLOSEST((val) * 95, 4) #define DIV_FROM_REG(val) (1 << (val)) #define BEEP_MASK_TO_REG(val) ((val) & 0x7f & data->alarm_mask) #define BEEP_MASK_FROM_REG(val) ((val) & 0x7f) /* Each client has this additional data */ struct gl518_data { struct i2c_client *client; const struct attribute_group *groups[3]; enum chips type; struct mutex update_lock; char valid; /* !=0 if following fields are valid */ unsigned long last_updated; /* In jiffies */ u8 voltage_in[4]; /* Register values; [0] = VDD */ u8 voltage_min[4]; /* Register values; [0] = VDD */ u8 voltage_max[4]; /* Register values; [0] = VDD */ u8 fan_in[2]; u8 fan_min[2]; u8 fan_div[2]; /* Register encoding, shifted right */ u8 fan_auto1; /* Boolean */ u8 temp_in; /* Register values */ u8 temp_max; /* Register values */ u8 temp_hyst; /* Register values */ u8 alarms; /* Register value */ u8 alarm_mask; u8 beep_mask; /* Register value */ u8 beep_enable; /* Boolean */ }; /* * Registers 0x07 to 0x0c are word-sized, others are byte-sized * GL518 uses a high-byte first convention, which is exactly opposite to * the SMBus standard. */ static int gl518_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 gl518_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 gl518_data *gl518_update_device(struct device *dev) { struct gl518_data *data = dev_get_drvdata(dev); struct i2c_client *client = data->client; int val; mutex_lock(&data->update_lock); if (time_after(jiffies, data->last_updated + HZ + HZ / 2) || !data->valid) { dev_dbg(&client->dev, "Starting gl518 update\n"); data->alarms = gl518_read_value(client, GL518_REG_INT); data->beep_mask = gl518_read_value(client, GL518_REG_ALARM); val = gl518_read_value(client, GL518_REG_VDD_LIMIT); data->voltage_min[0] = val & 0xff; data->voltage_max[0] = (val >> 8) & 0xff; val = gl518_read_value(client, GL518_REG_VIN1_LIMIT); data->voltage_min[1] = val & 0xff; data->voltage_max[1] = (val >> 8) & 0xff; val = gl518_read_value(client, GL518_REG_VIN2_LIMIT); data->voltage_min[2] = val & 0xff; data->voltage_max[2] = (val >> 8) & 0xff; val = gl518_read_value(client, GL518_REG_VIN3_LIMIT); data->voltage_min[3] = val & 0xff; data->voltage_max[3] = (val >> 8) & 0xff; val = gl518_read_value(client, GL518_REG_FAN_COUNT); data->fan_in[0] = (val >> 8) & 0xff; data->fan_in[1] = val & 0xff; val = gl518_read_value(client, GL518_REG_FAN_LIMIT); data->fan_min[0] = (val >> 8) & 0xff; data->fan_min[1] = val & 0xff; data->temp_in = gl518_read_value(client, GL518_REG_TEMP_IN); data->temp_max = gl518_read_value(client, GL518_REG_TEMP_MAX); data->temp_hyst = gl518_read_value(client, GL518_REG_TEMP_HYST); val = gl518_read_value(client, GL518_REG_MISC); data->fan_div[0] = (val >> 6) & 0x03; data->fan_div[1] = (val >> 4) & 0x03; data->fan_auto1 = (val >> 3) & 0x01; data->alarms &= data->alarm_mask; val = gl518_read_value(client, GL518_REG_CONF); data->beep_enable = (val >> 2) & 1; if (data->type != gl518sm_r00) { data->voltage_in[0] = gl518_read_value(client, GL518_REG_VDD); data->voltage_in[1] = gl518_read_value(client, GL518_REG_VIN1); data->voltage_in[2] = gl518_read_value(client, GL518_REG_VIN2); } data->voltage_in[3] = gl518_read_value(client, GL518_REG_VIN3); data->last_updated = jiffies; data->valid = 1; } mutex_unlock(&data->update_lock); return data; } /* * Sysfs stuff */ #define show(type, suffix, value) \ static ssize_t show_##suffix(struct device *dev, \ struct device_attribute *attr, char *buf) \ { \ struct gl518_data *data = gl518_update_device(dev); \ return sprintf(buf, "%d\n", type##_FROM_REG(data->value)); \ } show(TEMP, temp_input1, temp_in); show(TEMP, temp_max1, temp_max); show(TEMP, temp_hyst1, temp_hyst); show(BOOL, fan_auto1, fan_auto1); show(VDD, in_input0, voltage_in[0]); show(IN, in_input1, voltage_in[1]); show(IN, in_input2, voltage_in[2]); show(IN, in_input3, voltage_in[3]); show(VDD, in_min0, voltage_min[0]); show(IN, in_min1, voltage_min[1]); show(IN, in_min2, voltage_min[2]); show(IN, in_min3, voltage_min[3]); show(VDD, in_max0, voltage_max[0]); show(IN, in_max1, voltage_max[1]); show(IN, in_max2, voltage_max[2]); show(IN, in_max3, voltage_max[3]); show(RAW, alarms, alarms); show(BOOL, beep_enable, beep_enable); show(BEEP_MASK, beep_mask, beep_mask); static ssize_t show_fan_input(struct device *dev, struct device_attribute *attr, char *buf) { int nr = to_sensor_dev_attr(attr)->index; struct gl518_data *data = gl518_update_device(dev); return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_in[nr], DIV_FROM_REG(data->fan_div[nr]))); } static ssize_t show_fan_min(struct device *dev, struct device_attribute *attr, char *buf) { int nr = to_sensor_dev_attr(attr)->index; struct gl518_data *data = gl518_update_device(dev); return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[nr], DIV_FROM_REG(data->fan_div[nr]))); } static ssize_t show_fan_div(struct device *dev, struct device_attribute *attr, char *buf) { int nr = to_sensor_dev_attr(attr)->index; struct gl518_data *data = gl518_update_device(dev); return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[nr])); } #define set(type, suffix, value, reg) \ static ssize_t set_##suffix(struct device *dev, \ struct device_attribute *attr, \ const char *buf, size_t count) \ { \ struct gl518_data *data = dev_get_drvdata(dev); \ struct i2c_client *client = data->client; \ long val; \ int err = kstrtol(buf, 10, &val); \ if (err) \ return err; \ \ mutex_lock(&data->update_lock); \ data->value = type##_TO_REG(val); \ gl518_write_value(client, reg, data->value); \ mutex_unlock(&data->update_lock); \ return count; \ } #define set_bits(type, suffix, value, reg, mask, shift) \ static ssize_t set_##suffix(struct device *dev, \ struct device_attribute *attr, \ const char *buf, size_t count) \ { \ struct gl518_data *data = dev_get_drvdata(dev); \ struct i2c_client *client = data->client; \ int regvalue; \ unsigned long val; \ int err = kstrtoul(buf, 10, &val); \ if (err) \ return err; \ \ mutex_lock(&data->update_lock); \ regvalue = gl518_read_value(client, reg); \ data->value = type##_TO_REG(val); \ regvalue = (regvalue & ~mask) | (data->value << shift); \ gl518_write_value(client, reg, regvalue); \ mutex_unlock(&data->update_lock); \ return count; \ } #define set_low(type, suffix, value, reg) \ set_bits(type, suffix, value, reg, 0x00ff, 0) #define set_high(type, suffix, value, reg) \ set_bits(type, suffix, value, reg, 0xff00, 8) set(TEMP, temp_max1, temp_max, GL518_REG_TEMP_MAX); set(TEMP, temp_hyst1, temp_hyst, GL518_REG_TEMP_HYST); set_bits(BOOL, fan_auto1, fan_auto1, GL518_REG_MISC, 0x08, 3); set_low(VDD, in_min0, voltage_min[0], GL518_REG_VDD_LIMIT); set_low(IN, in_min1, voltage_min[1], GL518_REG_VIN1_LIMIT); set_low(IN, in_min2, voltage_min[2], GL518_REG_VIN2_LIMIT); set_low(IN, in_min3, voltage_min[3], GL518_REG_VIN3_LIMIT); set_high(VDD, in_max0, voltage_max[0], GL518_REG_VDD_LIMIT); set_high(IN, in_max1, voltage_max[1], GL518_REG_VIN1_LIMIT); set_high(IN, in_max2, voltage_max[2], GL518_REG_VIN2_LIMIT); set_high(IN, in_max3, voltage_max[3], GL518_REG_VIN3_LIMIT); set_bits(BOOL, beep_enable, beep_enable, GL518_REG_CONF, 0x04, 2); set(BEEP_MASK, beep_mask, beep_mask, GL518_REG_ALARM); static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct gl518_data *data = dev_get_drvdata(dev); struct i2c_client *client = data->client; int nr = to_sensor_dev_attr(attr)->index; int regvalue; unsigned long val; int err; err = kstrtoul(buf, 10, &val); if (err) return err; mutex_lock(&data->update_lock); regvalue = gl518_read_value(client, GL518_REG_FAN_LIMIT); data->fan_min[nr] = FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr])); regvalue = (regvalue & (0xff << (8 * nr))) | (data->fan_min[nr] << (8 * (1 - nr))); gl518_write_value(client, GL518_REG_FAN_LIMIT, regvalue); data->beep_mask = gl518_read_value(client, GL518_REG_ALARM); if (data->fan_min[nr] == 0) data->alarm_mask &= ~(0x20 << nr); else data->alarm_mask |= (0x20 << nr); data->beep_mask &= data->alarm_mask; gl518_write_value(client, GL518_REG_ALARM, data->beep_mask); mutex_unlock(&data->update_lock); return count; } static ssize_t set_fan_div(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct gl518_data *data = dev_get_drvdata(dev); struct i2c_client *client = data->client; int nr = to_sensor_dev_attr(attr)->index; int regvalue; unsigned long val; int err; err = kstrtoul(buf, 10, &val); if (err) return err; switch (val) { case 1: val = 0; break; case 2: val = 1; break; case 4: val = 2; break; case 8: val = 3; break; default: dev_err(dev, "Invalid fan clock divider %lu, choose one of 1, 2, 4 or 8\n", val); return -EINVAL; } mutex_lock(&data->update_lock); regvalue = gl518_read_value(client, GL518_REG_MISC); data->fan_div[nr] = val; regvalue = (regvalue & ~(0xc0 >> (2 * nr))) | (data->fan_div[nr] << (6 - 2 * nr)); gl518_write_value(client, GL518_REG_MISC, regvalue); mutex_unlock(&data->update_lock); return count; } static DEVICE_ATTR(temp1_input, S_IRUGO, show_temp_input1, NULL); static DEVICE_ATTR(temp1_max, S_IWUSR|S_IRUGO, show_temp_max1, set_temp_max1); static DEVICE_ATTR(temp1_max_hyst, S_IWUSR|S_IRUGO, show_temp_hyst1, set_temp_hyst1); static DEVICE_ATTR(fan1_auto, S_IWUSR|S_IRUGO, show_fan_auto1, set_fan_auto1); static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, show_fan_input, NULL, 0); static SENSOR_DEVICE_ATTR(fan2_input, S_IRUGO, show_fan_input, NULL, 1); static SENSOR_DEVICE_ATTR(fan1_min, S_IWUSR|S_IRUGO, show_fan_min, set_fan_min, 0); static SENSOR_DEVICE_ATTR(fan2_min, S_IWUSR|S_IRUGO, show_fan_min, set_fan_min, 1); static SENSOR_DEVICE_ATTR(fan1_div, S_IWUSR|S_IRUGO, show_fan_div, set_fan_div, 0); static SENSOR_DEVICE_ATTR(fan2_div, S_IWUSR|S_IRUGO, show_fan_div, set_fan_div, 1); static DEVICE_ATTR(in0_input, S_IRUGO, show_in_input0, NULL); static DEVICE_ATTR(in1_input, S_IRUGO, show_in_input1, NULL); static DEVICE_ATTR(in2_input, S_IRUGO, show_in_input2, NULL); static DEVICE_ATTR(in3_input, S_IRUGO, show_in_input3, NULL); static DEVICE_ATTR(in0_min, S_IWUSR|S_IRUGO, show_in_min0, set_in_min0); static DEVICE_ATTR(in1_min, S_IWUSR|S_IRUGO, show_in_min1, set_in_min1); static DEVICE_ATTR(in2_min, S_IWUSR|S_IRUGO, show_in_min2, set_in_min2); static DEVICE_ATTR(in3_min, S_IWUSR|S_IRUGO, show_in_min3, set_in_min3); static DEVICE_ATTR(in0_max, S_IWUSR|S_IRUGO, show_in_max0, set_in_max0); static DEVICE_ATTR(in1_max, S_IWUSR|S_IRUGO, show_in_max1, set_in_max1); static DEVICE_ATTR(in2_max, S_IWUSR|S_IRUGO, show_in_max2, set_in_max2); static DEVICE_ATTR(in3_max, S_IWUSR|S_IRUGO, show_in_max3, set_in_max3); static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL); static DEVICE_ATTR(beep_enable, S_IWUSR|S_IRUGO, show_beep_enable, set_beep_enable); static DEVICE_ATTR(beep_mask, S_IWUSR|S_IRUGO, show_beep_mask, set_beep_mask); static ssize_t show_alarm(struct device *dev, struct device_attribute *attr, char *buf) { int bitnr = to_sensor_dev_attr(attr)->index; struct gl518_data *data = gl518_update_device(dev); return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1); } static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0); static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 1); static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 2); static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 3); static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 4); static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 5); static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 6); static ssize_t show_beep(struct device *dev, struct device_attribute *attr, char *buf) { int bitnr = to_sensor_dev_attr(attr)->index; struct gl518_data *data = gl518_update_device(dev); return sprintf(buf, "%u\n", (data->beep_mask >> bitnr) & 1); } static ssize_t set_beep(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct gl518_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 = gl518_read_value(client, GL518_REG_ALARM); if (bit) data->beep_mask |= (1 << bitnr); else data->beep_mask &= ~(1 << bitnr); gl518_write_value(client, GL518_REG_ALARM, data->beep_mask); mutex_unlock(&data->update_lock); return count; } static SENSOR_DEVICE_ATTR(in0_beep, S_IRUGO|S_IWUSR, show_beep, set_beep, 0); static SENSOR_DEVICE_ATTR(in1_beep, S_IRUGO|S_IWUSR, show_beep, set_beep, 1); static SENSOR_DEVICE_ATTR(in2_beep, S_IRUGO|S_IWUSR, show_beep, set_beep, 2); static SENSOR_DEVICE_ATTR(in3_beep, S_IRUGO|S_IWUSR, show_beep, set_beep, 3); static SENSOR_DEVICE_ATTR(temp1_beep, S_IRUGO|S_IWUSR, show_beep, set_beep, 4); static SENSOR_DEVICE_ATTR(fan1_beep, S_IRUGO|S_IWUSR, show_beep, set_beep, 5); static SENSOR_DEVICE_ATTR(fan2_beep, S_IRUGO|S_IWUSR, show_beep, set_beep, 6); static struct attribute *gl518_attributes[] = { &dev_attr_in3_input.attr, &dev_attr_in0_min.attr, &dev_attr_in1_min.attr, &dev_attr_in2_min.attr, &dev_attr_in3_min.attr, &dev_attr_in0_max.attr, &dev_attr_in1_max.attr, &dev_attr_in2_max.attr, &dev_attr_in3_max.attr, &sensor_dev_attr_in0_alarm.dev_attr.attr, &sensor_dev_attr_in1_alarm.dev_attr.attr, &sensor_dev_attr_in2_alarm.dev_attr.attr, &sensor_dev_attr_in3_alarm.dev_attr.attr, &sensor_dev_attr_in0_beep.dev_attr.attr, &sensor_dev_attr_in1_beep.dev_attr.attr, &sensor_dev_attr_in2_beep.dev_attr.attr, &sensor_dev_attr_in3_beep.dev_attr.attr, &dev_attr_fan1_auto.attr, &sensor_dev_attr_fan1_input.dev_attr.attr, &sensor_dev_attr_fan2_input.dev_attr.attr, &sensor_dev_attr_fan1_min.dev_attr.attr, &sensor_dev_attr_fan2_min.dev_attr.attr, &sensor_dev_attr_fan1_div.dev_attr.attr, &sensor_dev_attr_fan2_div.dev_attr.attr, &sensor_dev_attr_fan1_alarm.dev_attr.attr, &sensor_dev_attr_fan2_alarm.dev_attr.attr, &sensor_dev_attr_fan1_beep.dev_attr.attr, &sensor_dev_attr_fan2_beep.dev_attr.attr, &dev_attr_temp1_input.attr, &dev_attr_temp1_max.attr, &dev_attr_temp1_max_hyst.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 gl518_group = { .attrs = gl518_attributes, }; static struct attribute *gl518_attributes_r80[] = { &dev_attr_in0_input.attr, &dev_attr_in1_input.attr, &dev_attr_in2_input.attr, NULL }; static const struct attribute_group gl518_group_r80 = { .attrs = gl518_attributes_r80, }; /* * Real code */ /* Return 0 if detection is successful, -ENODEV otherwise */ static int gl518_detect(struct i2c_client *client, struct i2c_board_info *info) { struct i2c_adapter *adapter = client->adapter; int rev; if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA | I2C_FUNC_SMBUS_WORD_DATA)) return -ENODEV; /* Now, we do the remaining detection. */ if ((gl518_read_value(client, GL518_REG_CHIP_ID) != 0x80) || (gl518_read_value(client, GL518_REG_CONF) & 0x80)) return -ENODEV; /* Determine the chip type. */ rev = gl518_read_value(client, GL518_REG_REVISION); if (rev != 0x00 && rev != 0x80) return -ENODEV; strlcpy(info->type, "gl518sm", I2C_NAME_SIZE); return 0; } /* * Called when we have found a new GL518SM. * Note that we preserve D4:NoFan2 and D2:beep_enable. */ static void gl518_init_client(struct i2c_client *client) { /* Make sure we leave D7:Reset untouched */ u8 regvalue = gl518_read_value(client, GL518_REG_CONF) & 0x7f; /* Comparator mode (D3=0), standby mode (D6=0) */ gl518_write_value(client, GL518_REG_CONF, (regvalue &= 0x37)); /* Never interrupts */ gl518_write_value(client, GL518_REG_MASK, 0x00); /* Clear status register (D5=1), start (D6=1) */ gl518_write_value(client, GL518_REG_CONF, 0x20 | regvalue); gl518_write_value(client, GL518_REG_CONF, 0x40 | regvalue); } static int gl518_probe(struct i2c_client *client, const struct i2c_device_id *id) { struct device *dev = &client->dev; struct device *hwmon_dev; struct gl518_data *data; int revision; data = devm_kzalloc(dev, sizeof(struct gl518_data), GFP_KERNEL); if (!data) return -ENOMEM; data->client = client; revision = gl518_read_value(client, GL518_REG_REVISION); data->type = revision == 0x80 ? gl518sm_r80 : gl518sm_r00; mutex_init(&data->update_lock); /* Initialize the GL518SM chip */ data->alarm_mask = 0xff; gl518_init_client(client); /* sysfs hooks */ data->groups[0] = &gl518_group; if (data->type == gl518sm_r80) data->groups[1] = &gl518_group_r80; 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 gl518_id[] = { { "gl518sm", 0 }, { } }; MODULE_DEVICE_TABLE(i2c, gl518_id); static struct i2c_driver gl518_driver = { .class = I2C_CLASS_HWMON, .driver = { .name = "gl518sm", }, .probe = gl518_probe, .id_table = gl518_id, .detect = gl518_detect, .address_list = normal_i2c, }; module_i2c_driver(gl518_driver); MODULE_AUTHOR("Frodo Looijaard <frodol@dds.nl>, " "Kyosti Malkki <kmalkki@cc.hut.fi> and " "Hong-Gunn Chew <hglinux@gunnet.org>"); MODULE_DESCRIPTION("GL518SM driver"); MODULE_LICENSE("GPL");
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