770 lines
22 KiB
C
770 lines
22 KiB
C
/*
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gl520sm.c - Part of lm_sensors, Linux kernel modules for hardware
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monitoring
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Copyright (c) 1998, 1999 Frodo Looijaard <frodol@dds.nl>,
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Kyösti Mälkki <kmalkki@cc.hut.fi>
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Copyright (c) 2005 Maarten Deprez <maartendeprez@users.sourceforge.net>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/slab.h>
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#include <linux/i2c.h>
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#include <linux/i2c-sensor.h>
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#include <linux/i2c-vid.h>
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/* Type of the extra sensor */
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static unsigned short extra_sensor_type;
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module_param(extra_sensor_type, ushort, 0);
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MODULE_PARM_DESC(extra_sensor_type, "Type of extra sensor (0=autodetect, 1=temperature, 2=voltage)");
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/* Addresses to scan */
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static unsigned short normal_i2c[] = { 0x2c, 0x2d, I2C_CLIENT_END };
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static unsigned int normal_isa[] = { I2C_CLIENT_ISA_END };
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/* Insmod parameters */
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SENSORS_INSMOD_1(gl520sm);
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/* Many GL520 constants specified below
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One of the inputs can be configured as either temp or voltage.
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That's why _TEMP2 and _IN4 access the same register
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*/
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/* The GL520 registers */
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#define GL520_REG_CHIP_ID 0x00
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#define GL520_REG_REVISION 0x01
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#define GL520_REG_CONF 0x03
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#define GL520_REG_MASK 0x11
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#define GL520_REG_VID_INPUT 0x02
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#define GL520_REG_IN0_INPUT 0x15
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#define GL520_REG_IN0_LIMIT 0x0c
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#define GL520_REG_IN0_MIN GL520_REG_IN0_LIMIT
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#define GL520_REG_IN0_MAX GL520_REG_IN0_LIMIT
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#define GL520_REG_IN1_INPUT 0x14
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#define GL520_REG_IN1_LIMIT 0x09
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#define GL520_REG_IN1_MIN GL520_REG_IN1_LIMIT
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#define GL520_REG_IN1_MAX GL520_REG_IN1_LIMIT
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#define GL520_REG_IN2_INPUT 0x13
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#define GL520_REG_IN2_LIMIT 0x0a
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#define GL520_REG_IN2_MIN GL520_REG_IN2_LIMIT
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#define GL520_REG_IN2_MAX GL520_REG_IN2_LIMIT
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#define GL520_REG_IN3_INPUT 0x0d
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#define GL520_REG_IN3_LIMIT 0x0b
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#define GL520_REG_IN3_MIN GL520_REG_IN3_LIMIT
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#define GL520_REG_IN3_MAX GL520_REG_IN3_LIMIT
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#define GL520_REG_IN4_INPUT 0x0e
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#define GL520_REG_IN4_MAX 0x17
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#define GL520_REG_IN4_MIN 0x18
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#define GL520_REG_TEMP1_INPUT 0x04
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#define GL520_REG_TEMP1_MAX 0x05
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#define GL520_REG_TEMP1_MAX_HYST 0x06
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#define GL520_REG_TEMP2_INPUT 0x0e
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#define GL520_REG_TEMP2_MAX 0x17
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#define GL520_REG_TEMP2_MAX_HYST 0x18
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#define GL520_REG_FAN_INPUT 0x07
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#define GL520_REG_FAN_MIN 0x08
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#define GL520_REG_FAN_DIV 0x0f
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#define GL520_REG_FAN_OFF GL520_REG_FAN_DIV
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#define GL520_REG_ALARMS 0x12
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#define GL520_REG_BEEP_MASK 0x10
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#define GL520_REG_BEEP_ENABLE GL520_REG_CONF
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/*
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* Function declarations
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*/
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static int gl520_attach_adapter(struct i2c_adapter *adapter);
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static int gl520_detect(struct i2c_adapter *adapter, int address, int kind);
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static void gl520_init_client(struct i2c_client *client);
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static int gl520_detach_client(struct i2c_client *client);
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static int gl520_read_value(struct i2c_client *client, u8 reg);
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static int gl520_write_value(struct i2c_client *client, u8 reg, u16 value);
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static struct gl520_data *gl520_update_device(struct device *dev);
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/* Driver data */
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static struct i2c_driver gl520_driver = {
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.owner = THIS_MODULE,
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.name = "gl520sm",
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.id = I2C_DRIVERID_GL520,
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.flags = I2C_DF_NOTIFY,
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.attach_adapter = gl520_attach_adapter,
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.detach_client = gl520_detach_client,
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};
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/* Client data */
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struct gl520_data {
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struct i2c_client client;
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struct semaphore update_lock;
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char valid; /* zero until the following fields are valid */
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unsigned long last_updated; /* in jiffies */
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u8 vid;
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u8 vrm;
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u8 in_input[5]; /* [0] = VVD */
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u8 in_min[5]; /* [0] = VDD */
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u8 in_max[5]; /* [0] = VDD */
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u8 fan_input[2];
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u8 fan_min[2];
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u8 fan_div[2];
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u8 fan_off;
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u8 temp_input[2];
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u8 temp_max[2];
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u8 temp_max_hyst[2];
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u8 alarms;
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u8 beep_enable;
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u8 beep_mask;
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u8 alarm_mask;
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u8 two_temps;
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};
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/*
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* Sysfs stuff
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*/
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#define sysfs_r(type, n, item, reg) \
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static ssize_t get_##type##item (struct gl520_data *, char *, int); \
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static ssize_t get_##type##n##item (struct device *, struct device_attribute *attr, char *); \
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static ssize_t get_##type##n##item (struct device *dev, struct device_attribute *attr, char *buf) \
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{ \
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struct gl520_data *data = gl520_update_device(dev); \
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return get_##type##item(data, buf, (n)); \
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}
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#define sysfs_w(type, n, item, reg) \
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static ssize_t set_##type##item (struct i2c_client *, struct gl520_data *, const char *, size_t, int, int); \
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static ssize_t set_##type##n##item (struct device *, struct device_attribute *attr, const char *, size_t); \
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static ssize_t set_##type##n##item (struct device *dev, struct device_attribute *attr, const char *buf, size_t count) \
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{ \
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struct i2c_client *client = to_i2c_client(dev); \
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struct gl520_data *data = i2c_get_clientdata(client); \
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return set_##type##item(client, data, buf, count, (n), reg); \
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}
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#define sysfs_rw_n(type, n, item, reg) \
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sysfs_r(type, n, item, reg) \
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sysfs_w(type, n, item, reg) \
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static DEVICE_ATTR(type##n##item, S_IRUGO | S_IWUSR, get_##type##n##item, set_##type##n##item);
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#define sysfs_ro_n(type, n, item, reg) \
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sysfs_r(type, n, item, reg) \
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static DEVICE_ATTR(type##n##item, S_IRUGO, get_##type##n##item, NULL);
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#define sysfs_rw(type, item, reg) \
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sysfs_r(type, 0, item, reg) \
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sysfs_w(type, 0, item, reg) \
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static DEVICE_ATTR(type##item, S_IRUGO | S_IWUSR, get_##type##0##item, set_##type##0##item);
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#define sysfs_ro(type, item, reg) \
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sysfs_r(type, 0, item, reg) \
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static DEVICE_ATTR(type##item, S_IRUGO, get_##type##0##item, NULL);
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#define sysfs_vid(n) \
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sysfs_ro_n(cpu, n, _vid, GL520_REG_VID_INPUT)
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#define device_create_file_vid(client, n) \
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device_create_file(&client->dev, &dev_attr_cpu##n##_vid)
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#define sysfs_in(n) \
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sysfs_ro_n(in, n, _input, GL520_REG_IN##n##INPUT) \
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sysfs_rw_n(in, n, _min, GL520_REG_IN##n##_MIN) \
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sysfs_rw_n(in, n, _max, GL520_REG_IN##n##_MAX) \
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#define device_create_file_in(client, n) \
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({device_create_file(&client->dev, &dev_attr_in##n##_input); \
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device_create_file(&client->dev, &dev_attr_in##n##_min); \
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device_create_file(&client->dev, &dev_attr_in##n##_max);})
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#define sysfs_fan(n) \
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sysfs_ro_n(fan, n, _input, GL520_REG_FAN_INPUT) \
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sysfs_rw_n(fan, n, _min, GL520_REG_FAN_MIN) \
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sysfs_rw_n(fan, n, _div, GL520_REG_FAN_DIV)
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#define device_create_file_fan(client, n) \
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({device_create_file(&client->dev, &dev_attr_fan##n##_input); \
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device_create_file(&client->dev, &dev_attr_fan##n##_min); \
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device_create_file(&client->dev, &dev_attr_fan##n##_div);})
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#define sysfs_fan_off(n) \
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sysfs_rw_n(fan, n, _off, GL520_REG_FAN_OFF) \
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#define device_create_file_fan_off(client, n) \
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device_create_file(&client->dev, &dev_attr_fan##n##_off)
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#define sysfs_temp(n) \
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sysfs_ro_n(temp, n, _input, GL520_REG_TEMP##n##_INPUT) \
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sysfs_rw_n(temp, n, _max, GL520_REG_TEMP##n##_MAX) \
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sysfs_rw_n(temp, n, _max_hyst, GL520_REG_TEMP##n##_MAX_HYST)
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#define device_create_file_temp(client, n) \
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({device_create_file(&client->dev, &dev_attr_temp##n##_input); \
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device_create_file(&client->dev, &dev_attr_temp##n##_max); \
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device_create_file(&client->dev, &dev_attr_temp##n##_max_hyst);})
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#define sysfs_alarms() \
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sysfs_ro(alarms, , GL520_REG_ALARMS) \
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sysfs_rw(beep_enable, , GL520_REG_BEEP_ENABLE) \
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sysfs_rw(beep_mask, , GL520_REG_BEEP_MASK)
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#define device_create_file_alarms(client) \
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({device_create_file(&client->dev, &dev_attr_alarms); \
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device_create_file(&client->dev, &dev_attr_beep_enable); \
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device_create_file(&client->dev, &dev_attr_beep_mask);})
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sysfs_vid(0)
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sysfs_in(0)
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sysfs_in(1)
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sysfs_in(2)
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sysfs_in(3)
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sysfs_in(4)
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sysfs_fan(1)
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sysfs_fan(2)
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sysfs_fan_off(1)
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sysfs_temp(1)
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sysfs_temp(2)
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sysfs_alarms()
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static ssize_t get_cpu_vid(struct gl520_data *data, char *buf, int n)
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{
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return sprintf(buf, "%u\n", vid_from_reg(data->vid, data->vrm));
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}
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#define VDD_FROM_REG(val) (((val)*95+2)/4)
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#define VDD_TO_REG(val) (SENSORS_LIMIT((((val)*4+47)/95),0,255))
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#define IN_FROM_REG(val) ((val)*19)
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#define IN_TO_REG(val) (SENSORS_LIMIT((((val)+9)/19),0,255))
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static ssize_t get_in_input(struct gl520_data *data, char *buf, int n)
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{
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u8 r = data->in_input[n];
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if (n == 0)
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return sprintf(buf, "%d\n", VDD_FROM_REG(r));
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else
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return sprintf(buf, "%d\n", IN_FROM_REG(r));
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}
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static ssize_t get_in_min(struct gl520_data *data, char *buf, int n)
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{
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u8 r = data->in_min[n];
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if (n == 0)
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return sprintf(buf, "%d\n", VDD_FROM_REG(r));
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else
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return sprintf(buf, "%d\n", IN_FROM_REG(r));
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}
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static ssize_t get_in_max(struct gl520_data *data, char *buf, int n)
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{
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u8 r = data->in_max[n];
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if (n == 0)
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return sprintf(buf, "%d\n", VDD_FROM_REG(r));
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else
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return sprintf(buf, "%d\n", IN_FROM_REG(r));
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}
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static ssize_t set_in_min(struct i2c_client *client, struct gl520_data *data, const char *buf, size_t count, int n, int reg)
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{
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long v = simple_strtol(buf, NULL, 10);
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u8 r;
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down(&data->update_lock);
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if (n == 0)
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r = VDD_TO_REG(v);
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else
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r = IN_TO_REG(v);
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data->in_min[n] = r;
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if (n < 4)
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gl520_write_value(client, reg, (gl520_read_value(client, reg) & ~0xff) | r);
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else
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gl520_write_value(client, reg, r);
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up(&data->update_lock);
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return count;
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}
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static ssize_t set_in_max(struct i2c_client *client, struct gl520_data *data, const char *buf, size_t count, int n, int reg)
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{
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long v = simple_strtol(buf, NULL, 10);
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u8 r;
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if (n == 0)
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r = VDD_TO_REG(v);
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else
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r = IN_TO_REG(v);
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down(&data->update_lock);
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data->in_max[n] = r;
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if (n < 4)
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gl520_write_value(client, reg, (gl520_read_value(client, reg) & ~0xff00) | (r << 8));
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else
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gl520_write_value(client, reg, r);
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up(&data->update_lock);
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return count;
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}
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#define DIV_FROM_REG(val) (1 << (val))
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#define FAN_FROM_REG(val,div) ((val)==0 ? 0 : (480000/((val) << (div))))
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#define FAN_TO_REG(val,div) ((val)<=0?0:SENSORS_LIMIT((480000 + ((val) << ((div)-1))) / ((val) << (div)), 1, 255));
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static ssize_t get_fan_input(struct gl520_data *data, char *buf, int n)
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{
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return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_input[n - 1], data->fan_div[n - 1]));
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}
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static ssize_t get_fan_min(struct gl520_data *data, char *buf, int n)
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{
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return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[n - 1], data->fan_div[n - 1]));
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}
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static ssize_t get_fan_div(struct gl520_data *data, char *buf, int n)
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{
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return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[n - 1]));
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}
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static ssize_t get_fan_off(struct gl520_data *data, char *buf, int n)
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{
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return sprintf(buf, "%d\n", data->fan_off);
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}
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static ssize_t set_fan_min(struct i2c_client *client, struct gl520_data *data, const char *buf, size_t count, int n, int reg)
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{
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unsigned long v = simple_strtoul(buf, NULL, 10);
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u8 r;
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down(&data->update_lock);
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r = FAN_TO_REG(v, data->fan_div[n - 1]);
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data->fan_min[n - 1] = r;
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if (n == 1)
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gl520_write_value(client, reg, (gl520_read_value(client, reg) & ~0xff00) | (r << 8));
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else
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gl520_write_value(client, reg, (gl520_read_value(client, reg) & ~0xff) | r);
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data->beep_mask = gl520_read_value(client, GL520_REG_BEEP_MASK);
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if (data->fan_min[n - 1] == 0)
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data->alarm_mask &= (n == 1) ? ~0x20 : ~0x40;
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else
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data->alarm_mask |= (n == 1) ? 0x20 : 0x40;
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data->beep_mask &= data->alarm_mask;
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gl520_write_value(client, GL520_REG_BEEP_MASK, data->beep_mask);
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up(&data->update_lock);
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return count;
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}
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static ssize_t set_fan_div(struct i2c_client *client, struct gl520_data *data, const char *buf, size_t count, int n, int reg)
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{
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unsigned long v = simple_strtoul(buf, NULL, 10);
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u8 r;
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switch (v) {
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case 1: r = 0; break;
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case 2: r = 1; break;
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case 4: r = 2; break;
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case 8: r = 3; break;
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default:
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dev_err(&client->dev, "fan_div value %ld not supported. Choose one of 1, 2, 4 or 8!\n", v);
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return -EINVAL;
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}
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down(&data->update_lock);
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data->fan_div[n - 1] = r;
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if (n == 1)
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gl520_write_value(client, reg, (gl520_read_value(client, reg) & ~0xc0) | (r << 6));
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else
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gl520_write_value(client, reg, (gl520_read_value(client, reg) & ~0x30) | (r << 4));
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up(&data->update_lock);
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return count;
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}
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static ssize_t set_fan_off(struct i2c_client *client, struct gl520_data *data, const char *buf, size_t count, int n, int reg)
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{
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u8 r = simple_strtoul(buf, NULL, 10)?1:0;
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down(&data->update_lock);
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data->fan_off = r;
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gl520_write_value(client, reg, (gl520_read_value(client, reg) & ~0x0c) | (r << 2));
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up(&data->update_lock);
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return count;
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}
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#define TEMP_FROM_REG(val) (((val) - 130) * 1000)
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#define TEMP_TO_REG(val) (SENSORS_LIMIT(((((val)<0?(val)-500:(val)+500) / 1000)+130),0,255))
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|
|
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 */
|
|
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_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)
|
|
{
|
|
int err;
|
|
|
|
if ((err = i2c_detach_client(client))) {
|
|
dev_err(&client->dev, "Client deregistration failed, "
|
|
"client not detached.\n");
|
|
return err;
|
|
}
|
|
|
|
kfree(i2c_get_clientdata(client));
|
|
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 ((jiffies - data->last_updated > 2 * HZ) ||
|
|
(jiffies < data->last_updated) || !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);
|