| /* |
| 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> |
| |
| This program is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2 of the License, or |
| (at your option) any later version. |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with this program; if not, write to the Free Software |
| Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| |
| */ |
| |
| #include <linux/module.h> |
| #include <linux/init.h> |
| #include <linux/slab.h> |
| #include <linux/jiffies.h> |
| #include <linux/i2c.h> |
| #include <linux/hwmon.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 }; |
| |
| /* Insmod parameters */ |
| I2C_CLIENT_INSMOD_1(gl520sm); |
| |
| /* 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 |
| |
| /* |
| * Function declarations |
| */ |
| |
| static int gl520_probe(struct i2c_client *client, |
| const struct i2c_device_id *id); |
| static int gl520_detect(struct i2c_client *client, struct i2c_board_info *info); |
| static void gl520_init_client(struct i2c_client *client); |
| static int gl520_remove(struct i2c_client *client); |
| static int gl520_read_value(struct i2c_client *client, u8 reg); |
| static int gl520_write_value(struct i2c_client *client, u8 reg, u16 value); |
| static struct gl520_data *gl520_update_device(struct device *dev); |
| |
| /* Driver data */ |
| static const struct i2c_device_id gl520_id[] = { |
| { "gl520sm", gl520sm }, |
| { } |
| }; |
| MODULE_DEVICE_TABLE(i2c, gl520_id); |
| |
| static struct i2c_driver gl520_driver = { |
| .class = I2C_CLASS_HWMON, |
| .driver = { |
| .name = "gl520sm", |
| }, |
| .probe = gl520_probe, |
| .remove = gl520_remove, |
| .id_table = gl520_id, |
| .detect = gl520_detect, |
| .address_list = normal_i2c, |
| }; |
| |
| /* Client data */ |
| struct gl520_data { |
| struct device *hwmon_dev; |
| 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; |
| }; |
| |
| /* |
| * Sysfs stuff |
| */ |
| |
| static ssize_t get_cpu_vid(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(cpu0_vid, S_IRUGO, get_cpu_vid, NULL); |
| |
| #define VDD_FROM_REG(val) (((val)*95+2)/4) |
| #define VDD_TO_REG(val) (SENSORS_LIMIT((((val)*4+47)/95),0,255)) |
| |
| #define IN_FROM_REG(val) ((val)*19) |
| #define IN_TO_REG(val) (SENSORS_LIMIT((((val)+9)/19),0,255)) |
| |
| static ssize_t get_in_input(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 get_in_min(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 get_in_max(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 set_in_min(struct device *dev, struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| struct i2c_client *client = to_i2c_client(dev); |
| struct gl520_data *data = i2c_get_clientdata(client); |
| int n = to_sensor_dev_attr(attr)->index; |
| long v = simple_strtol(buf, NULL, 10); |
| u8 r; |
| |
| 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 set_in_max(struct device *dev, struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| struct i2c_client *client = to_i2c_client(dev); |
| struct gl520_data *data = i2c_get_clientdata(client); |
| int n = to_sensor_dev_attr(attr)->index; |
| long v = simple_strtol(buf, NULL, 10); |
| u8 r; |
| |
| 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(in0_input, S_IRUGO, get_in_input, NULL, 0); |
| static SENSOR_DEVICE_ATTR(in1_input, S_IRUGO, get_in_input, NULL, 1); |
| static SENSOR_DEVICE_ATTR(in2_input, S_IRUGO, get_in_input, NULL, 2); |
| static SENSOR_DEVICE_ATTR(in3_input, S_IRUGO, get_in_input, NULL, 3); |
| static SENSOR_DEVICE_ATTR(in4_input, S_IRUGO, get_in_input, NULL, 4); |
| static SENSOR_DEVICE_ATTR(in0_min, S_IRUGO | S_IWUSR, |
| get_in_min, set_in_min, 0); |
| static SENSOR_DEVICE_ATTR(in1_min, S_IRUGO | S_IWUSR, |
| get_in_min, set_in_min, 1); |
| static SENSOR_DEVICE_ATTR(in2_min, S_IRUGO | S_IWUSR, |
| get_in_min, set_in_min, 2); |
| static SENSOR_DEVICE_ATTR(in3_min, S_IRUGO | S_IWUSR, |
| get_in_min, set_in_min, 3); |
| static SENSOR_DEVICE_ATTR(in4_min, S_IRUGO | S_IWUSR, |
| get_in_min, set_in_min, 4); |
| static SENSOR_DEVICE_ATTR(in0_max, S_IRUGO | S_IWUSR, |
| get_in_max, set_in_max, 0); |
| static SENSOR_DEVICE_ATTR(in1_max, S_IRUGO | S_IWUSR, |
| get_in_max, set_in_max, 1); |
| static SENSOR_DEVICE_ATTR(in2_max, S_IRUGO | S_IWUSR, |
| get_in_max, set_in_max, 2); |
| static SENSOR_DEVICE_ATTR(in3_max, S_IRUGO | S_IWUSR, |
| get_in_max, set_in_max, 3); |
| static SENSOR_DEVICE_ATTR(in4_max, S_IRUGO | S_IWUSR, |
| get_in_max, set_in_max, 4); |
| |
| #define DIV_FROM_REG(val) (1 << (val)) |
| #define FAN_FROM_REG(val,div) ((val)==0 ? 0 : (480000/((val) << (div)))) |
| #define FAN_TO_REG(val,div) ((val)<=0?0:SENSORS_LIMIT((480000 + ((val) << ((div)-1))) / ((val) << (div)), 1, 255)); |
| |
| static ssize_t get_fan_input(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 get_fan_min(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 get_fan_div(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 get_fan_off(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 set_fan_min(struct device *dev, struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| struct i2c_client *client = to_i2c_client(dev); |
| struct gl520_data *data = i2c_get_clientdata(client); |
| int n = to_sensor_dev_attr(attr)->index; |
| unsigned long v = simple_strtoul(buf, NULL, 10); |
| u8 r; |
| |
| 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 set_fan_div(struct device *dev, struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| struct i2c_client *client = to_i2c_client(dev); |
| struct gl520_data *data = i2c_get_clientdata(client); |
| int n = to_sensor_dev_attr(attr)->index; |
| unsigned long v = simple_strtoul(buf, NULL, 10); |
| u8 r; |
| |
| 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 set_fan_off(struct device *dev, struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| struct i2c_client *client = to_i2c_client(dev); |
| struct gl520_data *data = i2c_get_clientdata(client); |
| u8 r = simple_strtoul(buf, NULL, 10)?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(fan1_input, S_IRUGO, get_fan_input, NULL, 0); |
| static SENSOR_DEVICE_ATTR(fan2_input, S_IRUGO, get_fan_input, NULL, 1); |
| static SENSOR_DEVICE_ATTR(fan1_min, S_IRUGO | S_IWUSR, |
| get_fan_min, set_fan_min, 0); |
| static SENSOR_DEVICE_ATTR(fan2_min, S_IRUGO | S_IWUSR, |
| get_fan_min, set_fan_min, 1); |
| static SENSOR_DEVICE_ATTR(fan1_div, S_IRUGO | S_IWUSR, |
| get_fan_div, set_fan_div, 0); |
| static SENSOR_DEVICE_ATTR(fan2_div, S_IRUGO | S_IWUSR, |
| get_fan_div, set_fan_div, 1); |
| static DEVICE_ATTR(fan1_off, S_IRUGO | S_IWUSR, |
| get_fan_off, set_fan_off); |
| |
| #define TEMP_FROM_REG(val) (((val) - 130) * 1000) |
| #define TEMP_TO_REG(val) (SENSORS_LIMIT(((((val)<0?(val)-500:(val)+500) / 1000)+130),0,255)) |
| |
| static ssize_t get_temp_input(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 get_temp_max(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 get_temp_max_hyst(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 set_temp_max(struct device *dev, struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| struct i2c_client *client = to_i2c_client(dev); |
| struct gl520_data *data = i2c_get_clientdata(client); |
| int n = to_sensor_dev_attr(attr)->index; |
| long v = simple_strtol(buf, NULL, 10); |
| |
| 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 set_temp_max_hyst(struct device *dev, struct device_attribute |
| *attr, const char *buf, size_t count) |
| { |
| struct i2c_client *client = to_i2c_client(dev); |
| struct gl520_data *data = i2c_get_clientdata(client); |
| int n = to_sensor_dev_attr(attr)->index; |
| long v = simple_strtol(buf, NULL, 10); |
| |
| 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(temp1_input, S_IRUGO, get_temp_input, NULL, 0); |
| static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, get_temp_input, NULL, 1); |
| static SENSOR_DEVICE_ATTR(temp1_max, S_IRUGO | S_IWUSR, |
| get_temp_max, set_temp_max, 0); |
| static SENSOR_DEVICE_ATTR(temp2_max, S_IRUGO | S_IWUSR, |
| get_temp_max, set_temp_max, 1); |
| static SENSOR_DEVICE_ATTR(temp1_max_hyst, S_IRUGO | S_IWUSR, |
| get_temp_max_hyst, set_temp_max_hyst, 0); |
| static SENSOR_DEVICE_ATTR(temp2_max_hyst, S_IRUGO | S_IWUSR, |
| get_temp_max_hyst, set_temp_max_hyst, 1); |
| |
| static ssize_t get_alarms(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 get_beep_enable(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 get_beep_mask(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 set_beep_enable(struct device *dev, struct device_attribute |
| *attr, const char *buf, size_t count) |
| { |
| struct i2c_client *client = to_i2c_client(dev); |
| struct gl520_data *data = i2c_get_clientdata(client); |
| u8 r = simple_strtoul(buf, NULL, 10)?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 set_beep_mask(struct device *dev, struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| struct i2c_client *client = to_i2c_client(dev); |
| struct gl520_data *data = i2c_get_clientdata(client); |
| u8 r = simple_strtoul(buf, NULL, 10); |
| |
| 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(alarms, S_IRUGO, get_alarms, NULL); |
| static DEVICE_ATTR(beep_enable, S_IRUGO | S_IWUSR, |
| get_beep_enable, set_beep_enable); |
| static DEVICE_ATTR(beep_mask, S_IRUGO | S_IWUSR, |
| get_beep_mask, set_beep_mask); |
| |
| static ssize_t get_alarm(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(in0_alarm, S_IRUGO, get_alarm, NULL, 0); |
| static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, get_alarm, NULL, 1); |
| static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, get_alarm, NULL, 2); |
| static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, get_alarm, NULL, 3); |
| static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, get_alarm, NULL, 4); |
| static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, get_alarm, NULL, 5); |
| static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, get_alarm, NULL, 6); |
| static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, get_alarm, NULL, 7); |
| static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, get_alarm, NULL, 7); |
| |
| static ssize_t get_beep(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 set_beep(struct device *dev, struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| struct i2c_client *client = to_i2c_client(dev); |
| struct gl520_data *data = i2c_get_clientdata(client); |
| int bitnr = to_sensor_dev_attr(attr)->index; |
| unsigned long bit; |
| |
| bit = simple_strtoul(buf, NULL, 10); |
| 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(in0_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 0); |
| static SENSOR_DEVICE_ATTR(in1_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 1); |
| static SENSOR_DEVICE_ATTR(in2_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 2); |
| static SENSOR_DEVICE_ATTR(in3_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 3); |
| static SENSOR_DEVICE_ATTR(temp1_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 4); |
| static SENSOR_DEVICE_ATTR(fan1_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 5); |
| static SENSOR_DEVICE_ATTR(fan2_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 6); |
| static SENSOR_DEVICE_ATTR(temp2_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 7); |
| static SENSOR_DEVICE_ATTR(in4_beep, S_IRUGO | S_IWUSR, get_beep, set_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_opt[] = { |
| &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, |
| |
| &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_opt = { |
| .attrs = gl520_attributes_opt, |
| }; |
| |
| |
| /* |
| * 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; |
| } |
| |
| static int gl520_probe(struct i2c_client *client, |
| const struct i2c_device_id *id) |
| { |
| struct gl520_data *data; |
| int err; |
| |
| data = kzalloc(sizeof(struct gl520_data), GFP_KERNEL); |
| if (!data) { |
| err = -ENOMEM; |
| goto exit; |
| } |
| |
| i2c_set_clientdata(client, data); |
| mutex_init(&data->update_lock); |
| |
| /* Initialize the GL520SM chip */ |
| gl520_init_client(client); |
| |
| /* Register sysfs hooks */ |
| if ((err = sysfs_create_group(&client->dev.kobj, &gl520_group))) |
| goto exit_free; |
| |
| if (data->two_temps) { |
| if ((err = device_create_file(&client->dev, |
| &sensor_dev_attr_temp2_input.dev_attr)) |
| || (err = device_create_file(&client->dev, |
| &sensor_dev_attr_temp2_max.dev_attr)) |
| || (err = device_create_file(&client->dev, |
| &sensor_dev_attr_temp2_max_hyst.dev_attr)) |
| || (err = device_create_file(&client->dev, |
| &sensor_dev_attr_temp2_alarm.dev_attr)) |
| || (err = device_create_file(&client->dev, |
| &sensor_dev_attr_temp2_beep.dev_attr))) |
| goto exit_remove_files; |
| } else { |
| if ((err = device_create_file(&client->dev, |
| &sensor_dev_attr_in4_input.dev_attr)) |
| || (err = device_create_file(&client->dev, |
| &sensor_dev_attr_in4_min.dev_attr)) |
| || (err = device_create_file(&client->dev, |
| &sensor_dev_attr_in4_max.dev_attr)) |
| || (err = device_create_file(&client->dev, |
| &sensor_dev_attr_in4_alarm.dev_attr)) |
| || (err = device_create_file(&client->dev, |
| &sensor_dev_attr_in4_beep.dev_attr))) |
| goto exit_remove_files; |
| } |
| |
| |
| data->hwmon_dev = hwmon_device_register(&client->dev); |
| if (IS_ERR(data->hwmon_dev)) { |
| err = PTR_ERR(data->hwmon_dev); |
| goto exit_remove_files; |
| } |
| |
| return 0; |
| |
| exit_remove_files: |
| sysfs_remove_group(&client->dev.kobj, &gl520_group); |
| sysfs_remove_group(&client->dev.kobj, &gl520_group_opt); |
| exit_free: |
| kfree(data); |
| exit: |
| return err; |
| } |
| |
| |
| /* 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_remove(struct i2c_client *client) |
| { |
| struct gl520_data *data = i2c_get_clientdata(client); |
| |
| hwmon_device_unregister(data->hwmon_dev); |
| sysfs_remove_group(&client->dev.kobj, &gl520_group); |
| sysfs_remove_group(&client->dev.kobj, &gl520_group_opt); |
| |
| kfree(data); |
| return 0; |
| } |
| |
| |
| /* 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 swab16(i2c_smbus_read_word_data(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_data(client, reg, swab16(value)); |
| else |
| return i2c_smbus_write_byte_data(client, reg, value); |
| } |
| |
| |
| static struct gl520_data *gl520_update_device(struct device *dev) |
| { |
| struct i2c_client *client = to_i2c_client(dev); |
| struct gl520_data *data = i2c_get_clientdata(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; |
| } |
| |
| |
| static int __init sensors_gl520sm_init(void) |
| { |
| return i2c_add_driver(&gl520_driver); |
| } |
| |
| static void __exit sensors_gl520sm_exit(void) |
| { |
| i2c_del_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"); |
| |
| module_init(sensors_gl520sm_init); |
| module_exit(sensors_gl520sm_exit); |