| /* |
| * gl518sm.c - Part of lm_sensors, Linux kernel modules for hardware |
| * monitoring |
| * Copyright (C) 1998, 1999 Frodo Looijaard <frodol@dds.nl> and |
| * Kyosti Malkki <kmalkki@cc.hut.fi> |
| * Copyright (C) 2004 Hong-Gunn Chew <hglinux@gunnet.org> and |
| * Jean Delvare <khali@linux-fr.org> |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| * |
| * Ported to Linux 2.6 by Hong-Gunn Chew with the help of Jean Delvare |
| * and advice of Greg Kroah-Hartman. |
| * |
| * Notes about the port: |
| * Release 0x00 of the GL518SM chipset doesn't support reading of in0, |
| * in1 nor in2. The original driver had an ugly workaround to get them |
| * anyway (changing limits and watching alarms trigger and wear off). |
| * We did not keep that part of the original driver in the Linux 2.6 |
| * version, since it was making the driver significantly more complex |
| * with no real benefit. |
| * |
| * History: |
| * 2004-01-28 Original port. (Hong-Gunn Chew) |
| * 2004-01-31 Code review and approval. (Jean Delvare) |
| */ |
| |
| #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/hwmon.h> |
| #include <linux/err.h> |
| |
| /* Addresses to scan */ |
| static unsigned short normal_i2c[] = { 0x2c, 0x2d, I2C_CLIENT_END }; |
| |
| /* Insmod parameters */ |
| SENSORS_INSMOD_2(gl518sm_r00, gl518sm_r80); |
| |
| /* Many GL518 constants specified below */ |
| |
| /* The GL518 registers */ |
| #define GL518_REG_CHIP_ID 0x00 |
| #define GL518_REG_REVISION 0x01 |
| #define GL518_REG_VENDOR_ID 0x02 |
| #define GL518_REG_CONF 0x03 |
| #define GL518_REG_TEMP_IN 0x04 |
| #define GL518_REG_TEMP_MAX 0x05 |
| #define GL518_REG_TEMP_HYST 0x06 |
| #define GL518_REG_FAN_COUNT 0x07 |
| #define GL518_REG_FAN_LIMIT 0x08 |
| #define GL518_REG_VIN1_LIMIT 0x09 |
| #define GL518_REG_VIN2_LIMIT 0x0a |
| #define GL518_REG_VIN3_LIMIT 0x0b |
| #define GL518_REG_VDD_LIMIT 0x0c |
| #define GL518_REG_VIN3 0x0d |
| #define GL518_REG_MISC 0x0f |
| #define GL518_REG_ALARM 0x10 |
| #define GL518_REG_MASK 0x11 |
| #define GL518_REG_INT 0x12 |
| #define GL518_REG_VIN2 0x13 |
| #define GL518_REG_VIN1 0x14 |
| #define GL518_REG_VDD 0x15 |
| |
| |
| /* |
| * Conversions. Rounding and limit checking is only done on the TO_REG |
| * variants. Note that you should be a bit careful with which arguments |
| * these macros are called: arguments may be evaluated more than once. |
| * Fixing this is just not worth it. |
| */ |
| |
| #define RAW_FROM_REG(val) val |
| |
| #define BOOL_FROM_REG(val) ((val)?0:1) |
| #define BOOL_TO_REG(val) ((val)?0:1) |
| |
| #define TEMP_TO_REG(val) (SENSORS_LIMIT(((((val)<0? \ |
| (val)-500:(val)+500)/1000)+119),0,255)) |
| #define TEMP_FROM_REG(val) (((val) - 119) * 1000) |
| |
| static inline u8 FAN_TO_REG(long rpm, int div) |
| { |
| long rpmdiv; |
| if (rpm == 0) |
| return 0; |
| rpmdiv = SENSORS_LIMIT(rpm, 1, 1920000) * div; |
| return SENSORS_LIMIT((960000 + rpmdiv / 2) / rpmdiv, 1, 255); |
| } |
| #define FAN_FROM_REG(val,div) ((val)==0 ? 0 : (960000/((val)*(div)))) |
| |
| #define IN_TO_REG(val) (SENSORS_LIMIT((((val)+9)/19),0,255)) |
| #define IN_FROM_REG(val) ((val)*19) |
| |
| #define VDD_TO_REG(val) (SENSORS_LIMIT((((val)*4+47)/95),0,255)) |
| #define VDD_FROM_REG(val) (((val)*95+2)/4) |
| |
| #define DIV_TO_REG(val) ((val)==4?2:(val)==2?1:(val)==1?0:3) |
| #define DIV_FROM_REG(val) (1 << (val)) |
| |
| #define BEEP_MASK_TO_REG(val) ((val) & 0x7f & data->alarm_mask) |
| #define BEEP_MASK_FROM_REG(val) ((val) & 0x7f) |
| |
| /* Each client has this additional data */ |
| struct gl518_data { |
| struct i2c_client client; |
| struct class_device *class_dev; |
| enum chips type; |
| |
| struct semaphore update_lock; |
| char valid; /* !=0 if following fields are valid */ |
| unsigned long last_updated; /* In jiffies */ |
| |
| u8 voltage_in[4]; /* Register values; [0] = VDD */ |
| u8 voltage_min[4]; /* Register values; [0] = VDD */ |
| u8 voltage_max[4]; /* Register values; [0] = VDD */ |
| u8 iter_voltage_in[4]; /* Register values; [0] = VDD */ |
| u8 fan_in[2]; |
| u8 fan_min[2]; |
| u8 fan_div[2]; /* Register encoding, shifted right */ |
| u8 fan_auto1; /* Boolean */ |
| u8 temp_in; /* Register values */ |
| u8 temp_max; /* Register values */ |
| u8 temp_hyst; /* Register values */ |
| u8 alarms; /* Register value */ |
| u8 alarm_mask; /* Register value */ |
| u8 beep_mask; /* Register value */ |
| u8 beep_enable; /* Boolean */ |
| }; |
| |
| static int gl518_attach_adapter(struct i2c_adapter *adapter); |
| static int gl518_detect(struct i2c_adapter *adapter, int address, int kind); |
| static void gl518_init_client(struct i2c_client *client); |
| static int gl518_detach_client(struct i2c_client *client); |
| static int gl518_read_value(struct i2c_client *client, u8 reg); |
| static int gl518_write_value(struct i2c_client *client, u8 reg, u16 value); |
| static struct gl518_data *gl518_update_device(struct device *dev); |
| |
| /* This is the driver that will be inserted */ |
| static struct i2c_driver gl518_driver = { |
| .owner = THIS_MODULE, |
| .name = "gl518sm", |
| .id = I2C_DRIVERID_GL518, |
| .flags = I2C_DF_NOTIFY, |
| .attach_adapter = gl518_attach_adapter, |
| .detach_client = gl518_detach_client, |
| }; |
| |
| /* |
| * Sysfs stuff |
| */ |
| |
| #define show(type, suffix, value) \ |
| static ssize_t show_##suffix(struct device *dev, struct device_attribute *attr, char *buf) \ |
| { \ |
| struct gl518_data *data = gl518_update_device(dev); \ |
| return sprintf(buf, "%d\n", type##_FROM_REG(data->value)); \ |
| } |
| |
| #define show_fan(suffix, value, index) \ |
| static ssize_t show_##suffix(struct device *dev, struct device_attribute *attr, char *buf) \ |
| { \ |
| struct gl518_data *data = gl518_update_device(dev); \ |
| return sprintf(buf, "%d\n", FAN_FROM_REG(data->value[index], \ |
| DIV_FROM_REG(data->fan_div[index]))); \ |
| } |
| |
| show(TEMP, temp_input1, temp_in); |
| show(TEMP, temp_max1, temp_max); |
| show(TEMP, temp_hyst1, temp_hyst); |
| show(BOOL, fan_auto1, fan_auto1); |
| show_fan(fan_input1, fan_in, 0); |
| show_fan(fan_input2, fan_in, 1); |
| show_fan(fan_min1, fan_min, 0); |
| show_fan(fan_min2, fan_min, 1); |
| show(DIV, fan_div1, fan_div[0]); |
| show(DIV, fan_div2, fan_div[1]); |
| show(VDD, in_input0, voltage_in[0]); |
| show(IN, in_input1, voltage_in[1]); |
| show(IN, in_input2, voltage_in[2]); |
| show(IN, in_input3, voltage_in[3]); |
| show(VDD, in_min0, voltage_min[0]); |
| show(IN, in_min1, voltage_min[1]); |
| show(IN, in_min2, voltage_min[2]); |
| show(IN, in_min3, voltage_min[3]); |
| show(VDD, in_max0, voltage_max[0]); |
| show(IN, in_max1, voltage_max[1]); |
| show(IN, in_max2, voltage_max[2]); |
| show(IN, in_max3, voltage_max[3]); |
| show(RAW, alarms, alarms); |
| show(BOOL, beep_enable, beep_enable); |
| show(BEEP_MASK, beep_mask, beep_mask); |
| |
| #define set(type, suffix, value, reg) \ |
| static ssize_t set_##suffix(struct device *dev, struct device_attribute *attr, const char *buf, \ |
| size_t count) \ |
| { \ |
| struct i2c_client *client = to_i2c_client(dev); \ |
| struct gl518_data *data = i2c_get_clientdata(client); \ |
| long val = simple_strtol(buf, NULL, 10); \ |
| \ |
| down(&data->update_lock); \ |
| data->value = type##_TO_REG(val); \ |
| gl518_write_value(client, reg, data->value); \ |
| up(&data->update_lock); \ |
| return count; \ |
| } |
| |
| #define set_bits(type, suffix, value, reg, mask, shift) \ |
| static ssize_t set_##suffix(struct device *dev, struct device_attribute *attr, const char *buf, \ |
| size_t count) \ |
| { \ |
| struct i2c_client *client = to_i2c_client(dev); \ |
| struct gl518_data *data = i2c_get_clientdata(client); \ |
| int regvalue; \ |
| unsigned long val = simple_strtoul(buf, NULL, 10); \ |
| \ |
| down(&data->update_lock); \ |
| regvalue = gl518_read_value(client, reg); \ |
| data->value = type##_TO_REG(val); \ |
| regvalue = (regvalue & ~mask) | (data->value << shift); \ |
| gl518_write_value(client, reg, regvalue); \ |
| up(&data->update_lock); \ |
| return count; \ |
| } |
| |
| #define set_low(type, suffix, value, reg) \ |
| set_bits(type, suffix, value, reg, 0x00ff, 0) |
| #define set_high(type, suffix, value, reg) \ |
| set_bits(type, suffix, value, reg, 0xff00, 8) |
| |
| set(TEMP, temp_max1, temp_max, GL518_REG_TEMP_MAX); |
| set(TEMP, temp_hyst1, temp_hyst, GL518_REG_TEMP_HYST); |
| set_bits(BOOL, fan_auto1, fan_auto1, GL518_REG_MISC, 0x08, 3); |
| set_bits(DIV, fan_div1, fan_div[0], GL518_REG_MISC, 0xc0, 6); |
| set_bits(DIV, fan_div2, fan_div[1], GL518_REG_MISC, 0x30, 4); |
| set_low(VDD, in_min0, voltage_min[0], GL518_REG_VDD_LIMIT); |
| set_low(IN, in_min1, voltage_min[1], GL518_REG_VIN1_LIMIT); |
| set_low(IN, in_min2, voltage_min[2], GL518_REG_VIN2_LIMIT); |
| set_low(IN, in_min3, voltage_min[3], GL518_REG_VIN3_LIMIT); |
| set_high(VDD, in_max0, voltage_max[0], GL518_REG_VDD_LIMIT); |
| set_high(IN, in_max1, voltage_max[1], GL518_REG_VIN1_LIMIT); |
| set_high(IN, in_max2, voltage_max[2], GL518_REG_VIN2_LIMIT); |
| set_high(IN, in_max3, voltage_max[3], GL518_REG_VIN3_LIMIT); |
| set_bits(BOOL, beep_enable, beep_enable, GL518_REG_CONF, 0x04, 2); |
| set(BEEP_MASK, beep_mask, beep_mask, GL518_REG_ALARM); |
| |
| static ssize_t set_fan_min1(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) |
| { |
| struct i2c_client *client = to_i2c_client(dev); |
| struct gl518_data *data = i2c_get_clientdata(client); |
| int regvalue; |
| unsigned long val = simple_strtoul(buf, NULL, 10); |
| |
| down(&data->update_lock); |
| regvalue = gl518_read_value(client, GL518_REG_FAN_LIMIT); |
| data->fan_min[0] = FAN_TO_REG(val, |
| DIV_FROM_REG(data->fan_div[0])); |
| regvalue = (regvalue & 0x00ff) | (data->fan_min[0] << 8); |
| gl518_write_value(client, GL518_REG_FAN_LIMIT, regvalue); |
| |
| data->beep_mask = gl518_read_value(client, GL518_REG_ALARM); |
| if (data->fan_min[0] == 0) |
| data->alarm_mask &= ~0x20; |
| else |
| data->alarm_mask |= 0x20; |
| data->beep_mask &= data->alarm_mask; |
| gl518_write_value(client, GL518_REG_ALARM, data->beep_mask); |
| |
| up(&data->update_lock); |
| return count; |
| } |
| |
| static ssize_t set_fan_min2(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) |
| { |
| struct i2c_client *client = to_i2c_client(dev); |
| struct gl518_data *data = i2c_get_clientdata(client); |
| int regvalue; |
| unsigned long val = simple_strtoul(buf, NULL, 10); |
| |
| down(&data->update_lock); |
| regvalue = gl518_read_value(client, GL518_REG_FAN_LIMIT); |
| data->fan_min[1] = FAN_TO_REG(val, |
| DIV_FROM_REG(data->fan_div[1])); |
| regvalue = (regvalue & 0xff00) | data->fan_min[1]; |
| gl518_write_value(client, GL518_REG_FAN_LIMIT, regvalue); |
| |
| data->beep_mask = gl518_read_value(client, GL518_REG_ALARM); |
| if (data->fan_min[1] == 0) |
| data->alarm_mask &= ~0x40; |
| else |
| data->alarm_mask |= 0x40; |
| data->beep_mask &= data->alarm_mask; |
| gl518_write_value(client, GL518_REG_ALARM, data->beep_mask); |
| |
| up(&data->update_lock); |
| return count; |
| } |
| |
| static DEVICE_ATTR(temp1_input, S_IRUGO, show_temp_input1, NULL); |
| static DEVICE_ATTR(temp1_max, S_IWUSR|S_IRUGO, show_temp_max1, set_temp_max1); |
| static DEVICE_ATTR(temp1_max_hyst, S_IWUSR|S_IRUGO, |
| show_temp_hyst1, set_temp_hyst1); |
| static DEVICE_ATTR(fan1_auto, S_IWUSR|S_IRUGO, show_fan_auto1, set_fan_auto1); |
| static DEVICE_ATTR(fan1_input, S_IRUGO, show_fan_input1, NULL); |
| static DEVICE_ATTR(fan2_input, S_IRUGO, show_fan_input2, NULL); |
| static DEVICE_ATTR(fan1_min, S_IWUSR|S_IRUGO, show_fan_min1, set_fan_min1); |
| static DEVICE_ATTR(fan2_min, S_IWUSR|S_IRUGO, show_fan_min2, set_fan_min2); |
| static DEVICE_ATTR(fan1_div, S_IWUSR|S_IRUGO, show_fan_div1, set_fan_div1); |
| static DEVICE_ATTR(fan2_div, S_IWUSR|S_IRUGO, show_fan_div2, set_fan_div2); |
| static DEVICE_ATTR(in0_input, S_IRUGO, show_in_input0, NULL); |
| static DEVICE_ATTR(in1_input, S_IRUGO, show_in_input1, NULL); |
| static DEVICE_ATTR(in2_input, S_IRUGO, show_in_input2, NULL); |
| static DEVICE_ATTR(in3_input, S_IRUGO, show_in_input3, NULL); |
| static DEVICE_ATTR(in0_min, S_IWUSR|S_IRUGO, show_in_min0, set_in_min0); |
| static DEVICE_ATTR(in1_min, S_IWUSR|S_IRUGO, show_in_min1, set_in_min1); |
| static DEVICE_ATTR(in2_min, S_IWUSR|S_IRUGO, show_in_min2, set_in_min2); |
| static DEVICE_ATTR(in3_min, S_IWUSR|S_IRUGO, show_in_min3, set_in_min3); |
| static DEVICE_ATTR(in0_max, S_IWUSR|S_IRUGO, show_in_max0, set_in_max0); |
| static DEVICE_ATTR(in1_max, S_IWUSR|S_IRUGO, show_in_max1, set_in_max1); |
| static DEVICE_ATTR(in2_max, S_IWUSR|S_IRUGO, show_in_max2, set_in_max2); |
| static DEVICE_ATTR(in3_max, S_IWUSR|S_IRUGO, show_in_max3, set_in_max3); |
| static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL); |
| static DEVICE_ATTR(beep_enable, S_IWUSR|S_IRUGO, |
| show_beep_enable, set_beep_enable); |
| static DEVICE_ATTR(beep_mask, S_IWUSR|S_IRUGO, |
| show_beep_mask, set_beep_mask); |
| |
| /* |
| * Real code |
| */ |
| |
| static int gl518_attach_adapter(struct i2c_adapter *adapter) |
| { |
| if (!(adapter->class & I2C_CLASS_HWMON)) |
| return 0; |
| return i2c_detect(adapter, &addr_data, gl518_detect); |
| } |
| |
| static int gl518_detect(struct i2c_adapter *adapter, int address, int kind) |
| { |
| int i; |
| struct i2c_client *new_client; |
| struct gl518_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 gl518_{read,write}_value. */ |
| |
| if (!(data = kmalloc(sizeof(struct gl518_data), GFP_KERNEL))) { |
| err = -ENOMEM; |
| goto exit; |
| } |
| memset(data, 0, sizeof(struct gl518_data)); |
| |
| new_client = &data->client; |
| i2c_set_clientdata(new_client, data); |
| |
| new_client->addr = address; |
| new_client->adapter = adapter; |
| new_client->driver = &gl518_driver; |
| new_client->flags = 0; |
| |
| /* Now, we do the remaining detection. */ |
| |
| if (kind < 0) { |
| if ((gl518_read_value(new_client, GL518_REG_CHIP_ID) != 0x80) |
| || (gl518_read_value(new_client, GL518_REG_CONF) & 0x80)) |
| goto exit_free; |
| } |
| |
| /* Determine the chip type. */ |
| if (kind <= 0) { |
| i = gl518_read_value(new_client, GL518_REG_REVISION); |
| if (i == 0x00) { |
| kind = gl518sm_r00; |
| } else if (i == 0x80) { |
| kind = gl518sm_r80; |
| } else { |
| if (kind <= 0) |
| dev_info(&adapter->dev, |
| "Ignoring 'force' parameter for unknown " |
| "chip at adapter %d, address 0x%02x\n", |
| i2c_adapter_id(adapter), address); |
| goto exit_free; |
| } |
| } |
| |
| /* Fill in the remaining client fields */ |
| strlcpy(new_client->name, "gl518sm", I2C_NAME_SIZE); |
| data->type = kind; |
| 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 GL518SM chip */ |
| data->alarm_mask = 0xff; |
| data->voltage_in[0]=data->voltage_in[1]=data->voltage_in[2]=0; |
| gl518_init_client((struct i2c_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(&new_client->dev, &dev_attr_in0_input); |
| device_create_file(&new_client->dev, &dev_attr_in1_input); |
| device_create_file(&new_client->dev, &dev_attr_in2_input); |
| device_create_file(&new_client->dev, &dev_attr_in3_input); |
| device_create_file(&new_client->dev, &dev_attr_in0_min); |
| device_create_file(&new_client->dev, &dev_attr_in1_min); |
| device_create_file(&new_client->dev, &dev_attr_in2_min); |
| device_create_file(&new_client->dev, &dev_attr_in3_min); |
| device_create_file(&new_client->dev, &dev_attr_in0_max); |
| device_create_file(&new_client->dev, &dev_attr_in1_max); |
| device_create_file(&new_client->dev, &dev_attr_in2_max); |
| device_create_file(&new_client->dev, &dev_attr_in3_max); |
| device_create_file(&new_client->dev, &dev_attr_fan1_auto); |
| device_create_file(&new_client->dev, &dev_attr_fan1_input); |
| device_create_file(&new_client->dev, &dev_attr_fan2_input); |
| device_create_file(&new_client->dev, &dev_attr_fan1_min); |
| device_create_file(&new_client->dev, &dev_attr_fan2_min); |
| device_create_file(&new_client->dev, &dev_attr_fan1_div); |
| device_create_file(&new_client->dev, &dev_attr_fan2_div); |
| device_create_file(&new_client->dev, &dev_attr_temp1_input); |
| device_create_file(&new_client->dev, &dev_attr_temp1_max); |
| device_create_file(&new_client->dev, &dev_attr_temp1_max_hyst); |
| device_create_file(&new_client->dev, &dev_attr_alarms); |
| device_create_file(&new_client->dev, &dev_attr_beep_enable); |
| device_create_file(&new_client->dev, &dev_attr_beep_mask); |
| |
| return 0; |
| |
| /* OK, this is not exactly good programming practice, usually. But it is |
| very code-efficient in this case. */ |
| |
| exit_detach: |
| i2c_detach_client(new_client); |
| exit_free: |
| kfree(data); |
| exit: |
| return err; |
| } |
| |
| |
| /* Called when we have found a new GL518SM. |
| Note that we preserve D4:NoFan2 and D2:beep_enable. */ |
| static void gl518_init_client(struct i2c_client *client) |
| { |
| /* Make sure we leave D7:Reset untouched */ |
| u8 regvalue = gl518_read_value(client, GL518_REG_CONF) & 0x7f; |
| |
| /* Comparator mode (D3=0), standby mode (D6=0) */ |
| gl518_write_value(client, GL518_REG_CONF, (regvalue &= 0x37)); |
| |
| /* Never interrupts */ |
| gl518_write_value(client, GL518_REG_MASK, 0x00); |
| |
| /* Clear status register (D5=1), start (D6=1) */ |
| gl518_write_value(client, GL518_REG_CONF, 0x20 | regvalue); |
| gl518_write_value(client, GL518_REG_CONF, 0x40 | regvalue); |
| } |
| |
| static int gl518_detach_client(struct i2c_client *client) |
| { |
| struct gl518_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 |
| GL518 uses a high-byte first convention, which is exactly opposite to |
| the usual practice. */ |
| static int gl518_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); |
| } |
| |
| /* Registers 0x07 to 0x0c are word-sized, others are byte-sized |
| GL518 uses a high-byte first convention, which is exactly opposite to |
| the usual practice. */ |
| static int gl518_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 gl518_data *gl518_update_device(struct device *dev) |
| { |
| struct i2c_client *client = to_i2c_client(dev); |
| struct gl518_data *data = i2c_get_clientdata(client); |
| int val; |
| |
| down(&data->update_lock); |
| |
| if (time_after(jiffies, data->last_updated + HZ + HZ / 2) |
| || !data->valid) { |
| dev_dbg(&client->dev, "Starting gl518 update\n"); |
| |
| data->alarms = gl518_read_value(client, GL518_REG_INT); |
| data->beep_mask = gl518_read_value(client, GL518_REG_ALARM); |
| |
| val = gl518_read_value(client, GL518_REG_VDD_LIMIT); |
| data->voltage_min[0] = val & 0xff; |
| data->voltage_max[0] = (val >> 8) & 0xff; |
| val = gl518_read_value(client, GL518_REG_VIN1_LIMIT); |
| data->voltage_min[1] = val & 0xff; |
| data->voltage_max[1] = (val >> 8) & 0xff; |
| val = gl518_read_value(client, GL518_REG_VIN2_LIMIT); |
| data->voltage_min[2] = val & 0xff; |
| data->voltage_max[2] = (val >> 8) & 0xff; |
| val = gl518_read_value(client, GL518_REG_VIN3_LIMIT); |
| data->voltage_min[3] = val & 0xff; |
| data->voltage_max[3] = (val >> 8) & 0xff; |
| |
| val = gl518_read_value(client, GL518_REG_FAN_COUNT); |
| data->fan_in[0] = (val >> 8) & 0xff; |
| data->fan_in[1] = val & 0xff; |
| |
| val = gl518_read_value(client, GL518_REG_FAN_LIMIT); |
| data->fan_min[0] = (val >> 8) & 0xff; |
| data->fan_min[1] = val & 0xff; |
| |
| data->temp_in = gl518_read_value(client, GL518_REG_TEMP_IN); |
| data->temp_max = |
| gl518_read_value(client, GL518_REG_TEMP_MAX); |
| data->temp_hyst = |
| gl518_read_value(client, GL518_REG_TEMP_HYST); |
| |
| val = gl518_read_value(client, GL518_REG_MISC); |
| data->fan_div[0] = (val >> 6) & 0x03; |
| data->fan_div[1] = (val >> 4) & 0x03; |
| data->fan_auto1 = (val >> 3) & 0x01; |
| |
| data->alarms &= data->alarm_mask; |
| |
| val = gl518_read_value(client, GL518_REG_CONF); |
| data->beep_enable = (val >> 2) & 1; |
| |
| if (data->type != gl518sm_r00) { |
| data->voltage_in[0] = |
| gl518_read_value(client, GL518_REG_VDD); |
| data->voltage_in[1] = |
| gl518_read_value(client, GL518_REG_VIN1); |
| data->voltage_in[2] = |
| gl518_read_value(client, GL518_REG_VIN2); |
| } |
| data->voltage_in[3] = |
| gl518_read_value(client, GL518_REG_VIN3); |
| |
| data->last_updated = jiffies; |
| data->valid = 1; |
| } |
| |
| up(&data->update_lock); |
| |
| return data; |
| } |
| |
| static int __init sensors_gl518sm_init(void) |
| { |
| return i2c_add_driver(&gl518_driver); |
| } |
| |
| static void __exit sensors_gl518sm_exit(void) |
| { |
| i2c_del_driver(&gl518_driver); |
| } |
| |
| MODULE_AUTHOR("Frodo Looijaard <frodol@dds.nl>, " |
| "Kyosti Malkki <kmalkki@cc.hut.fi> and " |
| "Hong-Gunn Chew <hglinux@gunnet.org>"); |
| MODULE_DESCRIPTION("GL518SM driver"); |
| MODULE_LICENSE("GPL"); |
| |
| module_init(sensors_gl518sm_init); |
| module_exit(sensors_gl518sm_exit); |