| /* |
| 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/i2c-sensor.h> |
| #include <linux/i2c-vid.h> |
| #include <linux/hwmon.h> |
| #include <linux/err.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 unsigned short normal_i2c[] = { 0x2c, 0x2d, I2C_CLIENT_END }; |
| |
| /* Insmod parameters */ |
| SENSORS_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 |
| |
| #define GL520_REG_IN0_INPUT 0x15 |
| #define GL520_REG_IN0_LIMIT 0x0c |
| #define GL520_REG_IN0_MIN GL520_REG_IN0_LIMIT |
| #define GL520_REG_IN0_MAX GL520_REG_IN0_LIMIT |
| |
| #define GL520_REG_IN1_INPUT 0x14 |
| #define GL520_REG_IN1_LIMIT 0x09 |
| #define GL520_REG_IN1_MIN GL520_REG_IN1_LIMIT |
| #define GL520_REG_IN1_MAX GL520_REG_IN1_LIMIT |
| |
| #define GL520_REG_IN2_INPUT 0x13 |
| #define GL520_REG_IN2_LIMIT 0x0a |
| #define GL520_REG_IN2_MIN GL520_REG_IN2_LIMIT |
| #define GL520_REG_IN2_MAX GL520_REG_IN2_LIMIT |
| |
| #define GL520_REG_IN3_INPUT 0x0d |
| #define GL520_REG_IN3_LIMIT 0x0b |
| #define GL520_REG_IN3_MIN GL520_REG_IN3_LIMIT |
| #define GL520_REG_IN3_MAX GL520_REG_IN3_LIMIT |
| |
| #define GL520_REG_IN4_INPUT 0x0e |
| #define GL520_REG_IN4_MAX 0x17 |
| #define GL520_REG_IN4_MIN 0x18 |
| |
| #define GL520_REG_TEMP1_INPUT 0x04 |
| #define GL520_REG_TEMP1_MAX 0x05 |
| #define GL520_REG_TEMP1_MAX_HYST 0x06 |
| |
| #define GL520_REG_TEMP2_INPUT 0x0e |
| #define GL520_REG_TEMP2_MAX 0x17 |
| #define GL520_REG_TEMP2_MAX_HYST 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_attach_adapter(struct i2c_adapter *adapter); |
| static int gl520_detect(struct i2c_adapter *adapter, int address, int kind); |
| static void gl520_init_client(struct i2c_client *client); |
| static int gl520_detach_client(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 struct i2c_driver gl520_driver = { |
| .owner = THIS_MODULE, |
| .name = "gl520sm", |
| .id = I2C_DRIVERID_GL520, |
| .flags = I2C_DF_NOTIFY, |
| .attach_adapter = gl520_attach_adapter, |
| .detach_client = gl520_detach_client, |
| }; |
| |
| /* Client data */ |
| struct gl520_data { |
| struct i2c_client client; |
| struct class_device *class_dev; |
| struct semaphore 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 |
| */ |
| |
| #define sysfs_r(type, n, item, reg) \ |
| static ssize_t get_##type##item (struct gl520_data *, char *, int); \ |
| static ssize_t get_##type##n##item (struct device *, struct device_attribute *attr, char *); \ |
| static ssize_t get_##type##n##item (struct device *dev, struct device_attribute *attr, char *buf) \ |
| { \ |
| struct gl520_data *data = gl520_update_device(dev); \ |
| return get_##type##item(data, buf, (n)); \ |
| } |
| |
| #define sysfs_w(type, n, item, reg) \ |
| static ssize_t set_##type##item (struct i2c_client *, struct gl520_data *, const char *, size_t, int, int); \ |
| static ssize_t set_##type##n##item (struct device *, struct device_attribute *attr, const char *, size_t); \ |
| static ssize_t set_##type##n##item (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); \ |
| return set_##type##item(client, data, buf, count, (n), reg); \ |
| } |
| |
| #define sysfs_rw_n(type, n, item, reg) \ |
| sysfs_r(type, n, item, reg) \ |
| sysfs_w(type, n, item, reg) \ |
| static DEVICE_ATTR(type##n##item, S_IRUGO | S_IWUSR, get_##type##n##item, set_##type##n##item); |
| |
| #define sysfs_ro_n(type, n, item, reg) \ |
| sysfs_r(type, n, item, reg) \ |
| static DEVICE_ATTR(type##n##item, S_IRUGO, get_##type##n##item, NULL); |
| |
| #define sysfs_rw(type, item, reg) \ |
| sysfs_r(type, 0, item, reg) \ |
| sysfs_w(type, 0, item, reg) \ |
| static DEVICE_ATTR(type##item, S_IRUGO | S_IWUSR, get_##type##0##item, set_##type##0##item); |
| |
| #define sysfs_ro(type, item, reg) \ |
| sysfs_r(type, 0, item, reg) \ |
| static DEVICE_ATTR(type##item, S_IRUGO, get_##type##0##item, NULL); |
| |
| |
| #define sysfs_vid(n) \ |
| sysfs_ro_n(cpu, n, _vid, GL520_REG_VID_INPUT) |
| |
| #define device_create_file_vid(client, n) \ |
| device_create_file(&client->dev, &dev_attr_cpu##n##_vid) |
| |
| #define sysfs_in(n) \ |
| sysfs_ro_n(in, n, _input, GL520_REG_IN##n##INPUT) \ |
| sysfs_rw_n(in, n, _min, GL520_REG_IN##n##_MIN) \ |
| sysfs_rw_n(in, n, _max, GL520_REG_IN##n##_MAX) \ |
| |
| #define device_create_file_in(client, n) \ |
| ({device_create_file(&client->dev, &dev_attr_in##n##_input); \ |
| device_create_file(&client->dev, &dev_attr_in##n##_min); \ |
| device_create_file(&client->dev, &dev_attr_in##n##_max);}) |
| |
| #define sysfs_fan(n) \ |
| sysfs_ro_n(fan, n, _input, GL520_REG_FAN_INPUT) \ |
| sysfs_rw_n(fan, n, _min, GL520_REG_FAN_MIN) \ |
| sysfs_rw_n(fan, n, _div, GL520_REG_FAN_DIV) |
| |
| #define device_create_file_fan(client, n) \ |
| ({device_create_file(&client->dev, &dev_attr_fan##n##_input); \ |
| device_create_file(&client->dev, &dev_attr_fan##n##_min); \ |
| device_create_file(&client->dev, &dev_attr_fan##n##_div);}) |
| |
| #define sysfs_fan_off(n) \ |
| sysfs_rw_n(fan, n, _off, GL520_REG_FAN_OFF) \ |
| |
| #define device_create_file_fan_off(client, n) \ |
| device_create_file(&client->dev, &dev_attr_fan##n##_off) |
| |
| #define sysfs_temp(n) \ |
| sysfs_ro_n(temp, n, _input, GL520_REG_TEMP##n##_INPUT) \ |
| sysfs_rw_n(temp, n, _max, GL520_REG_TEMP##n##_MAX) \ |
| sysfs_rw_n(temp, n, _max_hyst, GL520_REG_TEMP##n##_MAX_HYST) |
| |
| #define device_create_file_temp(client, n) \ |
| ({device_create_file(&client->dev, &dev_attr_temp##n##_input); \ |
| device_create_file(&client->dev, &dev_attr_temp##n##_max); \ |
| device_create_file(&client->dev, &dev_attr_temp##n##_max_hyst);}) |
| |
| #define sysfs_alarms() \ |
| sysfs_ro(alarms, , GL520_REG_ALARMS) \ |
| sysfs_rw(beep_enable, , GL520_REG_BEEP_ENABLE) \ |
| sysfs_rw(beep_mask, , GL520_REG_BEEP_MASK) |
| |
| #define device_create_file_alarms(client) \ |
| ({device_create_file(&client->dev, &dev_attr_alarms); \ |
| device_create_file(&client->dev, &dev_attr_beep_enable); \ |
| device_create_file(&client->dev, &dev_attr_beep_mask);}) |
| |
| |
| sysfs_vid(0) |
| |
| sysfs_in(0) |
| sysfs_in(1) |
| sysfs_in(2) |
| sysfs_in(3) |
| sysfs_in(4) |
| |
| sysfs_fan(1) |
| sysfs_fan(2) |
| sysfs_fan_off(1) |
| |
| sysfs_temp(1) |
| sysfs_temp(2) |
| |
| sysfs_alarms() |
| |
| |
| static ssize_t get_cpu_vid(struct gl520_data *data, char *buf, int n) |
| { |
| return sprintf(buf, "%u\n", vid_from_reg(data->vid, data->vrm)); |
| } |
| |
| #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 gl520_data *data, char *buf, int n) |
| { |
| 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 gl520_data *data, char *buf, int n) |
| { |
| 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 gl520_data *data, char *buf, int n) |
| { |
| 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 i2c_client *client, struct gl520_data *data, const char *buf, size_t count, int n, int reg) |
| { |
| long v = simple_strtol(buf, NULL, 10); |
| u8 r; |
| |
| down(&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, reg, (gl520_read_value(client, reg) & ~0xff) | r); |
| else |
| gl520_write_value(client, reg, r); |
| |
| up(&data->update_lock); |
| return count; |
| } |
| |
| static ssize_t set_in_max(struct i2c_client *client, struct gl520_data *data, const char *buf, size_t count, int n, int reg) |
| { |
| long v = simple_strtol(buf, NULL, 10); |
| u8 r; |
| |
| if (n == 0) |
| r = VDD_TO_REG(v); |
| else |
| r = IN_TO_REG(v); |
| |
| down(&data->update_lock); |
| |
| data->in_max[n] = r; |
| |
| if (n < 4) |
| gl520_write_value(client, reg, (gl520_read_value(client, reg) & ~0xff00) | (r << 8)); |
| else |
| gl520_write_value(client, reg, r); |
| |
| up(&data->update_lock); |
| return count; |
| } |
| |
| #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 gl520_data *data, char *buf, int n) |
| { |
| return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_input[n - 1], data->fan_div[n - 1])); |
| } |
| |
| static ssize_t get_fan_min(struct gl520_data *data, char *buf, int n) |
| { |
| return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[n - 1], data->fan_div[n - 1])); |
| } |
| |
| static ssize_t get_fan_div(struct gl520_data *data, char *buf, int n) |
| { |
| return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[n - 1])); |
| } |
| |
| static ssize_t get_fan_off(struct gl520_data *data, char *buf, int n) |
| { |
| return sprintf(buf, "%d\n", data->fan_off); |
| } |
| |
| static ssize_t set_fan_min(struct i2c_client *client, struct gl520_data *data, const char *buf, size_t count, int n, int reg) |
| { |
| unsigned long v = simple_strtoul(buf, NULL, 10); |
| u8 r; |
| |
| down(&data->update_lock); |
| r = FAN_TO_REG(v, data->fan_div[n - 1]); |
| data->fan_min[n - 1] = r; |
| |
| if (n == 1) |
| gl520_write_value(client, reg, (gl520_read_value(client, reg) & ~0xff00) | (r << 8)); |
| else |
| gl520_write_value(client, reg, (gl520_read_value(client, reg) & ~0xff) | r); |
| |
| data->beep_mask = gl520_read_value(client, GL520_REG_BEEP_MASK); |
| if (data->fan_min[n - 1] == 0) |
| data->alarm_mask &= (n == 1) ? ~0x20 : ~0x40; |
| else |
| data->alarm_mask |= (n == 1) ? 0x20 : 0x40; |
| data->beep_mask &= data->alarm_mask; |
| gl520_write_value(client, GL520_REG_BEEP_MASK, data->beep_mask); |
| |
| up(&data->update_lock); |
| return count; |
| } |
| |
| static ssize_t set_fan_div(struct i2c_client *client, struct gl520_data *data, const char *buf, size_t count, int n, int reg) |
| { |
| 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; |
| } |
| |
| down(&data->update_lock); |
| data->fan_div[n - 1] = r; |
| |
| if (n == 1) |
| gl520_write_value(client, reg, (gl520_read_value(client, reg) & ~0xc0) | (r << 6)); |
| else |
| gl520_write_value(client, reg, (gl520_read_value(client, reg) & ~0x30) | (r << 4)); |
| |
| up(&data->update_lock); |
| return count; |
| } |
| |
| static ssize_t set_fan_off(struct i2c_client *client, struct gl520_data *data, const char *buf, size_t count, int n, int reg) |
| { |
| u8 r = simple_strtoul(buf, NULL, 10)?1:0; |
| |
| down(&data->update_lock); |
| data->fan_off = r; |
| gl520_write_value(client, reg, (gl520_read_value(client, reg) & ~0x0c) | (r << 2)); |
| up(&data->update_lock); |
| return count; |
| } |
| |
| #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 gl520_data *data, char *buf, int n) |
| { |
| return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_input[n - 1])); |
| } |
| |
| static ssize_t get_temp_max(struct gl520_data *data, char *buf, int n) |
| { |
| return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max[n - 1])); |
| } |
| |
| static ssize_t get_temp_max_hyst(struct gl520_data *data, char *buf, int n) |
| { |
| return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max_hyst[n - 1])); |
| } |
| |
| static ssize_t set_temp_max(struct i2c_client *client, struct gl520_data *data, const char *buf, size_t count, int n, int reg) |
| { |
| long v = simple_strtol(buf, NULL, 10); |
| |
| down(&data->update_lock); |
| data->temp_max[n - 1] = TEMP_TO_REG(v);; |
| gl520_write_value(client, reg, data->temp_max[n - 1]); |
| up(&data->update_lock); |
| return count; |
| } |
| |
| static ssize_t set_temp_max_hyst(struct i2c_client *client, struct gl520_data *data, const char *buf, size_t count, int n, int reg) |
| { |
| long v = simple_strtol(buf, NULL, 10); |
| |
| down(&data->update_lock); |
| data->temp_max_hyst[n - 1] = TEMP_TO_REG(v); |
| gl520_write_value(client, reg, data->temp_max_hyst[n - 1]); |
| up(&data->update_lock); |
| return count; |
| } |
| |
| static ssize_t get_alarms(struct gl520_data *data, char *buf, int n) |
| { |
| return sprintf(buf, "%d\n", data->alarms); |
| } |
| |
| static ssize_t get_beep_enable(struct gl520_data *data, char *buf, int n) |
| { |
| return sprintf(buf, "%d\n", data->beep_enable); |
| } |
| |
| static ssize_t get_beep_mask(struct gl520_data *data, char *buf, int n) |
| { |
| return sprintf(buf, "%d\n", data->beep_mask); |
| } |
| |
| static ssize_t set_beep_enable(struct i2c_client *client, struct gl520_data *data, const char *buf, size_t count, int n, int reg) |
| { |
| u8 r = simple_strtoul(buf, NULL, 10)?0:1; |
| |
| down(&data->update_lock); |
| data->beep_enable = !r; |
| gl520_write_value(client, reg, (gl520_read_value(client, reg) & ~0x04) | (r << 2)); |
| up(&data->update_lock); |
| return count; |
| } |
| |
| static ssize_t set_beep_mask(struct i2c_client *client, struct gl520_data *data, const char *buf, size_t count, int n, int reg) |
| { |
| u8 r = simple_strtoul(buf, NULL, 10); |
| |
| down(&data->update_lock); |
| r &= data->alarm_mask; |
| data->beep_mask = r; |
| gl520_write_value(client, reg, r); |
| up(&data->update_lock); |
| return count; |
| } |
| |
| |
| /* |
| * Real code |
| */ |
| |
| static int gl520_attach_adapter(struct i2c_adapter *adapter) |
| { |
| if (!(adapter->class & I2C_CLASS_HWMON)) |
| return 0; |
| return i2c_detect(adapter, &addr_data, gl520_detect); |
| } |
| |
| static int gl520_detect(struct i2c_adapter *adapter, int address, int kind) |
| { |
| struct i2c_client *new_client; |
| struct gl520_data *data; |
| int err = 0; |
| |
| if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA | |
| I2C_FUNC_SMBUS_WORD_DATA)) |
| goto exit; |
| |
| /* OK. For now, we presume we have a valid client. We now create the |
| client structure, even though we cannot fill it completely yet. |
| But it allows us to access gl520_{read,write}_value. */ |
| |
| if (!(data = kmalloc(sizeof(struct gl520_data), GFP_KERNEL))) { |
| err = -ENOMEM; |
| goto exit; |
| } |
| memset(data, 0, sizeof(struct gl520_data)); |
| |
| new_client = &data->client; |
| i2c_set_clientdata(new_client, data); |
| new_client->addr = address; |
| new_client->adapter = adapter; |
| new_client->driver = &gl520_driver; |
| new_client->flags = 0; |
| |
| /* Determine the chip type. */ |
| if (kind < 0) { |
| if ((gl520_read_value(new_client, GL520_REG_CHIP_ID) != 0x20) || |
| ((gl520_read_value(new_client, GL520_REG_REVISION) & 0x7f) != 0x00) || |
| ((gl520_read_value(new_client, GL520_REG_CONF) & 0x80) != 0x00)) { |
| dev_dbg(&new_client->dev, "Unknown chip type, skipping\n"); |
| goto exit_free; |
| } |
| } |
| |
| /* Fill in the remaining client fields */ |
| strlcpy(new_client->name, "gl520sm", I2C_NAME_SIZE); |
| data->valid = 0; |
| init_MUTEX(&data->update_lock); |
| |
| /* Tell the I2C layer a new client has arrived */ |
| if ((err = i2c_attach_client(new_client))) |
| goto exit_free; |
| |
| /* Initialize the GL520SM chip */ |
| gl520_init_client(new_client); |
| |
| /* Register sysfs hooks */ |
| data->class_dev = hwmon_device_register(&new_client->dev); |
| if (IS_ERR(data->class_dev)) { |
| err = PTR_ERR(data->class_dev); |
| goto exit_detach; |
| } |
| |
| device_create_file_vid(new_client, 0); |
| |
| device_create_file_in(new_client, 0); |
| device_create_file_in(new_client, 1); |
| device_create_file_in(new_client, 2); |
| device_create_file_in(new_client, 3); |
| if (!data->two_temps) |
| device_create_file_in(new_client, 4); |
| |
| device_create_file_fan(new_client, 1); |
| device_create_file_fan(new_client, 2); |
| device_create_file_fan_off(new_client, 1); |
| |
| device_create_file_temp(new_client, 1); |
| if (data->two_temps) |
| device_create_file_temp(new_client, 2); |
| |
| device_create_file_alarms(new_client); |
| |
| return 0; |
| |
| exit_detach: |
| i2c_detach_client(new_client); |
| 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 = i2c_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_detach_client(struct i2c_client *client) |
| { |
| struct gl520_data *data = i2c_get_clientdata(client); |
| int err; |
| |
| hwmon_device_unregister(data->class_dev); |
| |
| if ((err = i2c_detach_client(client))) { |
| dev_err(&client->dev, "Client deregistration failed, " |
| "client not detached.\n"); |
| return err; |
| } |
| |
| 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; |
| |
| down(&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; |
| |
| val = gl520_read_value(client, GL520_REG_IN0_LIMIT); |
| data->in_min[0] = val & 0xff; |
| data->in_max[0] = (val >> 8) & 0xff; |
| val = gl520_read_value(client, GL520_REG_IN1_LIMIT); |
| data->in_min[1] = val & 0xff; |
| data->in_max[1] = (val >> 8) & 0xff; |
| val = gl520_read_value(client, GL520_REG_IN2_LIMIT); |
| data->in_min[2] = val & 0xff; |
| data->in_max[2] = (val >> 8) & 0xff; |
| val = gl520_read_value(client, GL520_REG_IN3_LIMIT); |
| data->in_min[3] = val & 0xff; |
| data->in_max[3] = (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_TEMP1_INPUT); |
| data->temp_max[0] = gl520_read_value(client, GL520_REG_TEMP1_MAX); |
| data->temp_max_hyst[0] = gl520_read_value(client, GL520_REG_TEMP1_MAX_HYST); |
| |
| 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); |
| |
| data->in_input[0] = gl520_read_value(client, GL520_REG_IN0_INPUT); |
| data->in_input[1] = gl520_read_value(client, GL520_REG_IN1_INPUT); |
| data->in_input[2] = gl520_read_value(client, GL520_REG_IN2_INPUT); |
| data->in_input[3] = gl520_read_value(client, GL520_REG_IN3_INPUT); |
| |
| /* Temp1 and Vin4 are the same input */ |
| if (data->two_temps) { |
| data->temp_input[1] = gl520_read_value(client, GL520_REG_TEMP2_INPUT); |
| data->temp_max[1] = gl520_read_value(client, GL520_REG_TEMP2_MAX); |
| data->temp_max_hyst[1] = gl520_read_value(client, GL520_REG_TEMP2_MAX_HYST); |
| } else { |
| data->in_input[4] = gl520_read_value(client, GL520_REG_IN4_INPUT); |
| data->in_min[4] = gl520_read_value(client, GL520_REG_IN4_MIN); |
| data->in_max[4] = gl520_read_value(client, GL520_REG_IN4_MAX); |
| } |
| |
| data->last_updated = jiffies; |
| data->valid = 1; |
| } |
| |
| up(&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); |