| /* |
| fscpos.c - Kernel module for hardware monitoring with FSC Poseidon chips |
| Copyright (C) 2004, 2005 Stefan Ott <stefan@desire.ch> |
| |
| 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. |
| */ |
| |
| /* |
| fujitsu siemens poseidon chip, |
| module based on the old fscpos module by Hermann Jung <hej@odn.de> and |
| the fscher module by Reinhard Nissl <rnissl@gmx.de> |
| |
| original module based on lm80.c |
| Copyright (C) 1998, 1999 Frodo Looijaard <frodol@dds.nl> |
| and Philip Edelbrock <phil@netroedge.com> |
| |
| Thanks to Jean Delvare for reviewing my code and suggesting a lot of |
| improvements. |
| */ |
| |
| #include <linux/module.h> |
| #include <linux/slab.h> |
| #include <linux/jiffies.h> |
| #include <linux/i2c.h> |
| #include <linux/i2c-sensor.h> |
| #include <linux/init.h> |
| #include <linux/hwmon.h> |
| #include <linux/err.h> |
| |
| /* |
| * Addresses to scan |
| */ |
| static unsigned short normal_i2c[] = { 0x73, I2C_CLIENT_END }; |
| static unsigned int normal_isa[] = { I2C_CLIENT_ISA_END }; |
| |
| /* |
| * Insmod parameters |
| */ |
| SENSORS_INSMOD_1(fscpos); |
| |
| /* |
| * The FSCPOS registers |
| */ |
| |
| /* chip identification */ |
| #define FSCPOS_REG_IDENT_0 0x00 |
| #define FSCPOS_REG_IDENT_1 0x01 |
| #define FSCPOS_REG_IDENT_2 0x02 |
| #define FSCPOS_REG_REVISION 0x03 |
| |
| /* global control and status */ |
| #define FSCPOS_REG_EVENT_STATE 0x04 |
| #define FSCPOS_REG_CONTROL 0x05 |
| |
| /* watchdog */ |
| #define FSCPOS_REG_WDOG_PRESET 0x28 |
| #define FSCPOS_REG_WDOG_STATE 0x23 |
| #define FSCPOS_REG_WDOG_CONTROL 0x21 |
| |
| /* voltages */ |
| #define FSCPOS_REG_VOLT_12 0x45 |
| #define FSCPOS_REG_VOLT_5 0x42 |
| #define FSCPOS_REG_VOLT_BATT 0x48 |
| |
| /* fans - the chip does not support minimum speed for fan2 */ |
| static u8 FSCPOS_REG_PWM[] = { 0x55, 0x65 }; |
| static u8 FSCPOS_REG_FAN_ACT[] = { 0x0e, 0x6b, 0xab }; |
| static u8 FSCPOS_REG_FAN_STATE[] = { 0x0d, 0x62, 0xa2 }; |
| static u8 FSCPOS_REG_FAN_RIPPLE[] = { 0x0f, 0x6f, 0xaf }; |
| |
| /* temperatures */ |
| static u8 FSCPOS_REG_TEMP_ACT[] = { 0x64, 0x32, 0x35 }; |
| static u8 FSCPOS_REG_TEMP_STATE[] = { 0x71, 0x81, 0x91 }; |
| |
| /* |
| * Functions declaration |
| */ |
| static int fscpos_attach_adapter(struct i2c_adapter *adapter); |
| static int fscpos_detect(struct i2c_adapter *adapter, int address, int kind); |
| static int fscpos_detach_client(struct i2c_client *client); |
| |
| static int fscpos_read_value(struct i2c_client *client, u8 register); |
| static int fscpos_write_value(struct i2c_client *client, u8 register, u8 value); |
| static struct fscpos_data *fscpos_update_device(struct device *dev); |
| static void fscpos_init_client(struct i2c_client *client); |
| |
| static void reset_fan_alarm(struct i2c_client *client, int nr); |
| |
| /* |
| * Driver data (common to all clients) |
| */ |
| static struct i2c_driver fscpos_driver = { |
| .owner = THIS_MODULE, |
| .name = "fscpos", |
| .id = I2C_DRIVERID_FSCPOS, |
| .flags = I2C_DF_NOTIFY, |
| .attach_adapter = fscpos_attach_adapter, |
| .detach_client = fscpos_detach_client, |
| }; |
| |
| /* |
| * Client data (each client gets its own) |
| */ |
| struct fscpos_data { |
| struct i2c_client client; |
| struct class_device *class_dev; |
| struct semaphore update_lock; |
| char valid; /* 0 until following fields are valid */ |
| unsigned long last_updated; /* In jiffies */ |
| |
| /* register values */ |
| u8 revision; /* revision of chip */ |
| u8 global_event; /* global event status */ |
| u8 global_control; /* global control register */ |
| u8 wdog_control; /* watchdog control */ |
| u8 wdog_state; /* watchdog status */ |
| u8 wdog_preset; /* watchdog preset */ |
| u8 volt[3]; /* 12, 5, battery current */ |
| u8 temp_act[3]; /* temperature */ |
| u8 temp_status[3]; /* status of sensor */ |
| u8 fan_act[3]; /* fans revolutions per second */ |
| u8 fan_status[3]; /* fan status */ |
| u8 pwm[2]; /* fan min value for rps */ |
| u8 fan_ripple[3]; /* divider for rps */ |
| }; |
| |
| /* Temperature */ |
| #define TEMP_FROM_REG(val) (((val) - 128) * 1000) |
| |
| static ssize_t show_temp_input(struct fscpos_data *data, char *buf, int nr) |
| { |
| return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_act[nr - 1])); |
| } |
| |
| static ssize_t show_temp_status(struct fscpos_data *data, char *buf, int nr) |
| { |
| /* bits 2..7 reserved => mask with 0x03 */ |
| return sprintf(buf, "%u\n", data->temp_status[nr - 1] & 0x03); |
| } |
| |
| static ssize_t show_temp_reset(struct fscpos_data *data, char *buf, int nr) |
| { |
| return sprintf(buf, "1\n"); |
| } |
| |
| static ssize_t set_temp_reset(struct i2c_client *client, struct fscpos_data |
| *data, const char *buf, size_t count, int nr, int reg) |
| { |
| unsigned long v = simple_strtoul(buf, NULL, 10); |
| if (v != 1) { |
| dev_err(&client->dev, "temp_reset value %ld not supported. " |
| "Use 1 to reset the alarm!\n", v); |
| return -EINVAL; |
| } |
| |
| dev_info(&client->dev, "You used the temp_reset feature which has not " |
| "been proplerly tested. Please report your " |
| "experience to the module author.\n"); |
| |
| /* Supported value: 2 (clears the status) */ |
| fscpos_write_value(client, FSCPOS_REG_TEMP_STATE[nr - 1], 2); |
| return count; |
| } |
| |
| /* Fans */ |
| #define RPM_FROM_REG(val) ((val) * 60) |
| |
| static ssize_t show_fan_status(struct fscpos_data *data, char *buf, int nr) |
| { |
| /* bits 0..1, 3..7 reserved => mask with 0x04 */ |
| return sprintf(buf, "%u\n", data->fan_status[nr - 1] & 0x04); |
| } |
| |
| static ssize_t show_fan_input(struct fscpos_data *data, char *buf, int nr) |
| { |
| return sprintf(buf, "%u\n", RPM_FROM_REG(data->fan_act[nr - 1])); |
| } |
| |
| static ssize_t show_fan_ripple(struct fscpos_data *data, char *buf, int nr) |
| { |
| /* bits 2..7 reserved => mask with 0x03 */ |
| return sprintf(buf, "%u\n", data->fan_ripple[nr - 1] & 0x03); |
| } |
| |
| static ssize_t set_fan_ripple(struct i2c_client *client, struct fscpos_data |
| *data, const char *buf, size_t count, int nr, int reg) |
| { |
| /* supported values: 2, 4, 8 */ |
| unsigned long v = simple_strtoul(buf, NULL, 10); |
| |
| switch (v) { |
| case 2: v = 1; break; |
| case 4: v = 2; break; |
| case 8: v = 3; break; |
| default: |
| dev_err(&client->dev, "fan_ripple value %ld not supported. " |
| "Must be one of 2, 4 or 8!\n", v); |
| return -EINVAL; |
| } |
| |
| down(&data->update_lock); |
| /* bits 2..7 reserved => mask with 0x03 */ |
| data->fan_ripple[nr - 1] &= ~0x03; |
| data->fan_ripple[nr - 1] |= v; |
| |
| fscpos_write_value(client, reg, data->fan_ripple[nr - 1]); |
| up(&data->update_lock); |
| return count; |
| } |
| |
| static ssize_t show_pwm(struct fscpos_data *data, char *buf, int nr) |
| { |
| return sprintf(buf, "%u\n", data->pwm[nr - 1]); |
| } |
| |
| static ssize_t set_pwm(struct i2c_client *client, struct fscpos_data *data, |
| const char *buf, size_t count, int nr, int reg) |
| { |
| unsigned long v = simple_strtoul(buf, NULL, 10); |
| |
| /* Range: 0..255 */ |
| if (v < 0) v = 0; |
| if (v > 255) v = 255; |
| |
| down(&data->update_lock); |
| data->pwm[nr - 1] = v; |
| fscpos_write_value(client, reg, data->pwm[nr - 1]); |
| up(&data->update_lock); |
| return count; |
| } |
| |
| static void reset_fan_alarm(struct i2c_client *client, int nr) |
| { |
| fscpos_write_value(client, FSCPOS_REG_FAN_STATE[nr], 4); |
| } |
| |
| /* Volts */ |
| #define VOLT_FROM_REG(val, mult) ((val) * (mult) / 255) |
| |
| static ssize_t show_volt_12(struct device *dev, struct device_attribute *attr, char *buf) |
| { |
| struct fscpos_data *data = fscpos_update_device(dev); |
| return sprintf(buf, "%u\n", VOLT_FROM_REG(data->volt[0], 14200)); |
| } |
| |
| static ssize_t show_volt_5(struct device *dev, struct device_attribute *attr, char *buf) |
| { |
| struct fscpos_data *data = fscpos_update_device(dev); |
| return sprintf(buf, "%u\n", VOLT_FROM_REG(data->volt[1], 6600)); |
| } |
| |
| static ssize_t show_volt_batt(struct device *dev, struct device_attribute *attr, char *buf) |
| { |
| struct fscpos_data *data = fscpos_update_device(dev); |
| return sprintf(buf, "%u\n", VOLT_FROM_REG(data->volt[2], 3300)); |
| } |
| |
| /* Watchdog */ |
| static ssize_t show_wdog_control(struct fscpos_data *data, char *buf) |
| { |
| /* bits 0..3 reserved, bit 6 write only => mask with 0xb0 */ |
| return sprintf(buf, "%u\n", data->wdog_control & 0xb0); |
| } |
| |
| static ssize_t set_wdog_control(struct i2c_client *client, struct fscpos_data |
| *data, const char *buf, size_t count, int reg) |
| { |
| /* bits 0..3 reserved => mask with 0xf0 */ |
| unsigned long v = simple_strtoul(buf, NULL, 10) & 0xf0; |
| |
| down(&data->update_lock); |
| data->wdog_control &= ~0xf0; |
| data->wdog_control |= v; |
| fscpos_write_value(client, reg, data->wdog_control); |
| up(&data->update_lock); |
| return count; |
| } |
| |
| static ssize_t show_wdog_state(struct fscpos_data *data, char *buf) |
| { |
| /* bits 0, 2..7 reserved => mask with 0x02 */ |
| return sprintf(buf, "%u\n", data->wdog_state & 0x02); |
| } |
| |
| static ssize_t set_wdog_state(struct i2c_client *client, struct fscpos_data |
| *data, const char *buf, size_t count, int reg) |
| { |
| unsigned long v = simple_strtoul(buf, NULL, 10) & 0x02; |
| |
| /* Valid values: 2 (clear) */ |
| if (v != 2) { |
| dev_err(&client->dev, "wdog_state value %ld not supported. " |
| "Must be 2 to clear the state!\n", v); |
| return -EINVAL; |
| } |
| |
| down(&data->update_lock); |
| data->wdog_state &= ~v; |
| fscpos_write_value(client, reg, v); |
| up(&data->update_lock); |
| return count; |
| } |
| |
| static ssize_t show_wdog_preset(struct fscpos_data *data, char *buf) |
| { |
| return sprintf(buf, "%u\n", data->wdog_preset); |
| } |
| |
| static ssize_t set_wdog_preset(struct i2c_client *client, struct fscpos_data |
| *data, const char *buf, size_t count, int reg) |
| { |
| unsigned long v = simple_strtoul(buf, NULL, 10) & 0xff; |
| |
| down(&data->update_lock); |
| data->wdog_preset = v; |
| fscpos_write_value(client, reg, data->wdog_preset); |
| up(&data->update_lock); |
| return count; |
| } |
| |
| /* Event */ |
| static ssize_t show_event(struct device *dev, struct device_attribute *attr, char *buf) |
| { |
| /* bits 5..7 reserved => mask with 0x1f */ |
| struct fscpos_data *data = fscpos_update_device(dev); |
| return sprintf(buf, "%u\n", data->global_event & 0x9b); |
| } |
| |
| /* |
| * Sysfs stuff |
| */ |
| #define create_getter(kind, sub) \ |
| static ssize_t sysfs_show_##kind##sub(struct device *dev, struct device_attribute *attr, char *buf) \ |
| { \ |
| struct fscpos_data *data = fscpos_update_device(dev); \ |
| return show_##kind##sub(data, buf); \ |
| } |
| |
| #define create_getter_n(kind, offset, sub) \ |
| static ssize_t sysfs_show_##kind##offset##sub(struct device *dev, struct device_attribute *attr, char\ |
| *buf) \ |
| { \ |
| struct fscpos_data *data = fscpos_update_device(dev); \ |
| return show_##kind##sub(data, buf, offset); \ |
| } |
| |
| #define create_setter(kind, sub, reg) \ |
| static ssize_t sysfs_set_##kind##sub (struct device *dev, struct device_attribute *attr, const char \ |
| *buf, size_t count) \ |
| { \ |
| struct i2c_client *client = to_i2c_client(dev); \ |
| struct fscpos_data *data = i2c_get_clientdata(client); \ |
| return set_##kind##sub(client, data, buf, count, reg); \ |
| } |
| |
| #define create_setter_n(kind, offset, sub, reg) \ |
| static ssize_t sysfs_set_##kind##offset##sub (struct device *dev, struct device_attribute *attr, \ |
| const char *buf, size_t count) \ |
| { \ |
| struct i2c_client *client = to_i2c_client(dev); \ |
| struct fscpos_data *data = i2c_get_clientdata(client); \ |
| return set_##kind##sub(client, data, buf, count, offset, reg);\ |
| } |
| |
| #define create_sysfs_device_ro(kind, sub, offset) \ |
| static DEVICE_ATTR(kind##offset##sub, S_IRUGO, \ |
| sysfs_show_##kind##offset##sub, NULL); |
| |
| #define create_sysfs_device_rw(kind, sub, offset) \ |
| static DEVICE_ATTR(kind##offset##sub, S_IRUGO | S_IWUSR, \ |
| sysfs_show_##kind##offset##sub, sysfs_set_##kind##offset##sub); |
| |
| #define sysfs_ro_n(kind, sub, offset) \ |
| create_getter_n(kind, offset, sub); \ |
| create_sysfs_device_ro(kind, sub, offset); |
| |
| #define sysfs_rw_n(kind, sub, offset, reg) \ |
| create_getter_n(kind, offset, sub); \ |
| create_setter_n(kind, offset, sub, reg); \ |
| create_sysfs_device_rw(kind, sub, offset); |
| |
| #define sysfs_rw(kind, sub, reg) \ |
| create_getter(kind, sub); \ |
| create_setter(kind, sub, reg); \ |
| create_sysfs_device_rw(kind, sub,); |
| |
| #define sysfs_fan_with_min(offset, reg_status, reg_ripple, reg_min) \ |
| sysfs_fan(offset, reg_status, reg_ripple); \ |
| sysfs_rw_n(pwm,, offset, reg_min); |
| |
| #define sysfs_fan(offset, reg_status, reg_ripple) \ |
| sysfs_ro_n(fan, _input, offset); \ |
| sysfs_ro_n(fan, _status, offset); \ |
| sysfs_rw_n(fan, _ripple, offset, reg_ripple); |
| |
| #define sysfs_temp(offset, reg_status) \ |
| sysfs_ro_n(temp, _input, offset); \ |
| sysfs_ro_n(temp, _status, offset); \ |
| sysfs_rw_n(temp, _reset, offset, reg_status); |
| |
| #define sysfs_watchdog(reg_wdog_preset, reg_wdog_state, reg_wdog_control) \ |
| sysfs_rw(wdog, _control, reg_wdog_control); \ |
| sysfs_rw(wdog, _preset, reg_wdog_preset); \ |
| sysfs_rw(wdog, _state, reg_wdog_state); |
| |
| sysfs_fan_with_min(1, FSCPOS_REG_FAN_STATE[0], FSCPOS_REG_FAN_RIPPLE[0], |
| FSCPOS_REG_PWM[0]); |
| sysfs_fan_with_min(2, FSCPOS_REG_FAN_STATE[1], FSCPOS_REG_FAN_RIPPLE[1], |
| FSCPOS_REG_PWM[1]); |
| sysfs_fan(3, FSCPOS_REG_FAN_STATE[2], FSCPOS_REG_FAN_RIPPLE[2]); |
| |
| sysfs_temp(1, FSCPOS_REG_TEMP_STATE[0]); |
| sysfs_temp(2, FSCPOS_REG_TEMP_STATE[1]); |
| sysfs_temp(3, FSCPOS_REG_TEMP_STATE[2]); |
| |
| sysfs_watchdog(FSCPOS_REG_WDOG_PRESET, FSCPOS_REG_WDOG_STATE, |
| FSCPOS_REG_WDOG_CONTROL); |
| |
| static DEVICE_ATTR(event, S_IRUGO, show_event, NULL); |
| static DEVICE_ATTR(in0_input, S_IRUGO, show_volt_12, NULL); |
| static DEVICE_ATTR(in1_input, S_IRUGO, show_volt_5, NULL); |
| static DEVICE_ATTR(in2_input, S_IRUGO, show_volt_batt, NULL); |
| |
| static int fscpos_attach_adapter(struct i2c_adapter *adapter) |
| { |
| if (!(adapter->class & I2C_CLASS_HWMON)) |
| return 0; |
| return i2c_detect(adapter, &addr_data, fscpos_detect); |
| } |
| |
| int fscpos_detect(struct i2c_adapter *adapter, int address, int kind) |
| { |
| struct i2c_client *new_client; |
| struct fscpos_data *data; |
| int err = 0; |
| |
| if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_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 fscpos_{read,write}_value. |
| */ |
| |
| if (!(data = kmalloc(sizeof(struct fscpos_data), GFP_KERNEL))) { |
| err = -ENOMEM; |
| goto exit; |
| } |
| memset(data, 0, sizeof(struct fscpos_data)); |
| |
| new_client = &data->client; |
| i2c_set_clientdata(new_client, data); |
| new_client->addr = address; |
| new_client->adapter = adapter; |
| new_client->driver = &fscpos_driver; |
| new_client->flags = 0; |
| |
| /* Do the remaining detection unless force or force_fscpos parameter */ |
| if (kind < 0) { |
| if ((fscpos_read_value(new_client, FSCPOS_REG_IDENT_0) |
| != 0x50) /* 'P' */ |
| || (fscpos_read_value(new_client, FSCPOS_REG_IDENT_1) |
| != 0x45) /* 'E' */ |
| || (fscpos_read_value(new_client, FSCPOS_REG_IDENT_2) |
| != 0x47))/* 'G' */ |
| { |
| dev_dbg(&new_client->dev, "fscpos detection failed\n"); |
| goto exit_free; |
| } |
| } |
| |
| /* Fill in the remaining client fields and put it in the global list */ |
| strlcpy(new_client->name, "fscpos", 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; |
| |
| /* Inizialize the fscpos chip */ |
| fscpos_init_client(new_client); |
| |
| /* Announce that the chip was found */ |
| dev_info(&new_client->dev, "Found fscpos chip, rev %u\n", data->revision); |
| |
| /* 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_event); |
| 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_wdog_control); |
| device_create_file(&new_client->dev, &dev_attr_wdog_preset); |
| device_create_file(&new_client->dev, &dev_attr_wdog_state); |
| device_create_file(&new_client->dev, &dev_attr_temp1_input); |
| device_create_file(&new_client->dev, &dev_attr_temp1_status); |
| device_create_file(&new_client->dev, &dev_attr_temp1_reset); |
| device_create_file(&new_client->dev, &dev_attr_temp2_input); |
| device_create_file(&new_client->dev, &dev_attr_temp2_status); |
| device_create_file(&new_client->dev, &dev_attr_temp2_reset); |
| device_create_file(&new_client->dev, &dev_attr_temp3_input); |
| device_create_file(&new_client->dev, &dev_attr_temp3_status); |
| device_create_file(&new_client->dev, &dev_attr_temp3_reset); |
| device_create_file(&new_client->dev, &dev_attr_fan1_input); |
| device_create_file(&new_client->dev, &dev_attr_fan1_status); |
| device_create_file(&new_client->dev, &dev_attr_fan1_ripple); |
| device_create_file(&new_client->dev, &dev_attr_pwm1); |
| device_create_file(&new_client->dev, &dev_attr_fan2_input); |
| device_create_file(&new_client->dev, &dev_attr_fan2_status); |
| device_create_file(&new_client->dev, &dev_attr_fan2_ripple); |
| device_create_file(&new_client->dev, &dev_attr_pwm2); |
| device_create_file(&new_client->dev, &dev_attr_fan3_input); |
| device_create_file(&new_client->dev, &dev_attr_fan3_status); |
| device_create_file(&new_client->dev, &dev_attr_fan3_ripple); |
| |
| return 0; |
| |
| exit_detach: |
| i2c_detach_client(new_client); |
| exit_free: |
| kfree(data); |
| exit: |
| return err; |
| } |
| |
| static int fscpos_detach_client(struct i2c_client *client) |
| { |
| struct fscpos_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; |
| } |
| |
| static int fscpos_read_value(struct i2c_client *client, u8 reg) |
| { |
| dev_dbg(&client->dev, "Read reg 0x%02x\n", reg); |
| return i2c_smbus_read_byte_data(client, reg); |
| } |
| |
| static int fscpos_write_value(struct i2c_client *client, u8 reg, u8 value) |
| { |
| dev_dbg(&client->dev, "Write reg 0x%02x, val 0x%02x\n", reg, value); |
| return i2c_smbus_write_byte_data(client, reg, value); |
| } |
| |
| /* Called when we have found a new FSCPOS chip */ |
| static void fscpos_init_client(struct i2c_client *client) |
| { |
| struct fscpos_data *data = i2c_get_clientdata(client); |
| |
| /* read revision from chip */ |
| data->revision = fscpos_read_value(client, FSCPOS_REG_REVISION); |
| } |
| |
| static struct fscpos_data *fscpos_update_device(struct device *dev) |
| { |
| struct i2c_client *client = to_i2c_client(dev); |
| struct fscpos_data *data = i2c_get_clientdata(client); |
| |
| down(&data->update_lock); |
| |
| if (time_after(jiffies, data->last_updated + 2 * HZ) || !data->valid) { |
| int i; |
| |
| dev_dbg(&client->dev, "Starting fscpos update\n"); |
| |
| for (i = 0; i < 3; i++) { |
| data->temp_act[i] = fscpos_read_value(client, |
| FSCPOS_REG_TEMP_ACT[i]); |
| data->temp_status[i] = fscpos_read_value(client, |
| FSCPOS_REG_TEMP_STATE[i]); |
| data->fan_act[i] = fscpos_read_value(client, |
| FSCPOS_REG_FAN_ACT[i]); |
| data->fan_status[i] = fscpos_read_value(client, |
| FSCPOS_REG_FAN_STATE[i]); |
| data->fan_ripple[i] = fscpos_read_value(client, |
| FSCPOS_REG_FAN_RIPPLE[i]); |
| if (i < 2) { |
| /* fan2_min is not supported by the chip */ |
| data->pwm[i] = fscpos_read_value(client, |
| FSCPOS_REG_PWM[i]); |
| } |
| /* reset fan status if speed is back to > 0 */ |
| if (data->fan_status[i] != 0 && data->fan_act[i] > 0) { |
| reset_fan_alarm(client, i); |
| } |
| } |
| |
| data->volt[0] = fscpos_read_value(client, FSCPOS_REG_VOLT_12); |
| data->volt[1] = fscpos_read_value(client, FSCPOS_REG_VOLT_5); |
| data->volt[2] = fscpos_read_value(client, FSCPOS_REG_VOLT_BATT); |
| |
| data->wdog_preset = fscpos_read_value(client, |
| FSCPOS_REG_WDOG_PRESET); |
| data->wdog_state = fscpos_read_value(client, |
| FSCPOS_REG_WDOG_STATE); |
| data->wdog_control = fscpos_read_value(client, |
| FSCPOS_REG_WDOG_CONTROL); |
| |
| data->global_event = fscpos_read_value(client, |
| FSCPOS_REG_EVENT_STATE); |
| |
| data->last_updated = jiffies; |
| data->valid = 1; |
| } |
| up(&data->update_lock); |
| return data; |
| } |
| |
| static int __init sm_fscpos_init(void) |
| { |
| return i2c_add_driver(&fscpos_driver); |
| } |
| |
| static void __exit sm_fscpos_exit(void) |
| { |
| i2c_del_driver(&fscpos_driver); |
| } |
| |
| MODULE_AUTHOR("Stefan Ott <stefan@desire.ch> based on work from Hermann Jung " |
| "<hej@odn.de>, Frodo Looijaard <frodol@dds.nl>" |
| " and Philip Edelbrock <phil@netroedge.com>"); |
| MODULE_DESCRIPTION("fujitsu siemens poseidon chip driver"); |
| MODULE_LICENSE("GPL"); |
| |
| module_init(sm_fscpos_init); |
| module_exit(sm_fscpos_exit); |