| /* |
| * fscher.c - Part of lm_sensors, Linux kernel modules for hardware |
| * monitoring |
| * Copyright (C) 2003, 2004 Reinhard Nissl <rnissl@gmx.de> |
| * |
| * 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 hermes chip, |
| * module based on fscpos.c |
| * Copyright (C) 2000 Hermann Jung <hej@odn.de> |
| * Copyright (C) 1998, 1999 Frodo Looijaard <frodol@dds.nl> |
| * and Philip Edelbrock <phil@netroedge.com> |
| */ |
| |
| #include <linux/config.h> |
| #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> |
| |
| /* |
| * 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(fscher); |
| |
| /* |
| * The FSCHER registers |
| */ |
| |
| /* chip identification */ |
| #define FSCHER_REG_IDENT_0 0x00 |
| #define FSCHER_REG_IDENT_1 0x01 |
| #define FSCHER_REG_IDENT_2 0x02 |
| #define FSCHER_REG_REVISION 0x03 |
| |
| /* global control and status */ |
| #define FSCHER_REG_EVENT_STATE 0x04 |
| #define FSCHER_REG_CONTROL 0x05 |
| |
| /* watchdog */ |
| #define FSCHER_REG_WDOG_PRESET 0x28 |
| #define FSCHER_REG_WDOG_STATE 0x23 |
| #define FSCHER_REG_WDOG_CONTROL 0x21 |
| |
| /* fan 0 */ |
| #define FSCHER_REG_FAN0_MIN 0x55 |
| #define FSCHER_REG_FAN0_ACT 0x0e |
| #define FSCHER_REG_FAN0_STATE 0x0d |
| #define FSCHER_REG_FAN0_RIPPLE 0x0f |
| |
| /* fan 1 */ |
| #define FSCHER_REG_FAN1_MIN 0x65 |
| #define FSCHER_REG_FAN1_ACT 0x6b |
| #define FSCHER_REG_FAN1_STATE 0x62 |
| #define FSCHER_REG_FAN1_RIPPLE 0x6f |
| |
| /* fan 2 */ |
| #define FSCHER_REG_FAN2_MIN 0xb5 |
| #define FSCHER_REG_FAN2_ACT 0xbb |
| #define FSCHER_REG_FAN2_STATE 0xb2 |
| #define FSCHER_REG_FAN2_RIPPLE 0xbf |
| |
| /* voltage supervision */ |
| #define FSCHER_REG_VOLT_12 0x45 |
| #define FSCHER_REG_VOLT_5 0x42 |
| #define FSCHER_REG_VOLT_BATT 0x48 |
| |
| /* temperature 0 */ |
| #define FSCHER_REG_TEMP0_ACT 0x64 |
| #define FSCHER_REG_TEMP0_STATE 0x71 |
| |
| /* temperature 1 */ |
| #define FSCHER_REG_TEMP1_ACT 0x32 |
| #define FSCHER_REG_TEMP1_STATE 0x81 |
| |
| /* temperature 2 */ |
| #define FSCHER_REG_TEMP2_ACT 0x35 |
| #define FSCHER_REG_TEMP2_STATE 0x91 |
| |
| /* |
| * Functions declaration |
| */ |
| |
| static int fscher_attach_adapter(struct i2c_adapter *adapter); |
| static int fscher_detect(struct i2c_adapter *adapter, int address, int kind); |
| static int fscher_detach_client(struct i2c_client *client); |
| static struct fscher_data *fscher_update_device(struct device *dev); |
| static void fscher_init_client(struct i2c_client *client); |
| |
| static int fscher_read_value(struct i2c_client *client, u8 reg); |
| static int fscher_write_value(struct i2c_client *client, u8 reg, u8 value); |
| |
| /* |
| * Driver data (common to all clients) |
| */ |
| |
| static struct i2c_driver fscher_driver = { |
| .owner = THIS_MODULE, |
| .name = "fscher", |
| .id = I2C_DRIVERID_FSCHER, |
| .flags = I2C_DF_NOTIFY, |
| .attach_adapter = fscher_attach_adapter, |
| .detach_client = fscher_detach_client, |
| }; |
| |
| /* |
| * Client data (each client gets its own) |
| */ |
| |
| struct fscher_data { |
| struct i2c_client client; |
| struct semaphore update_lock; |
| char valid; /* zero 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 watchdog[3]; /* watchdog */ |
| u8 volt[3]; /* 12, 5, battery voltage */ |
| 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 fan_min[3]; /* fan min value for rps */ |
| u8 fan_ripple[3]; /* divider for rps */ |
| }; |
| |
| /* |
| * Sysfs stuff |
| */ |
| |
| #define sysfs_r(kind, sub, offset, reg) \ |
| static ssize_t show_##kind##sub (struct fscher_data *, char *, int); \ |
| static ssize_t show_##kind##offset##sub (struct device *, struct device_attribute *attr, char *); \ |
| static ssize_t show_##kind##offset##sub (struct device *dev, struct device_attribute *attr, char *buf) \ |
| { \ |
| struct fscher_data *data = fscher_update_device(dev); \ |
| return show_##kind##sub(data, buf, (offset)); \ |
| } |
| |
| #define sysfs_w(kind, sub, offset, reg) \ |
| static ssize_t set_##kind##sub (struct i2c_client *, struct fscher_data *, const char *, size_t, int, int); \ |
| static ssize_t set_##kind##offset##sub (struct device *, struct device_attribute *attr, const char *, size_t); \ |
| static ssize_t 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 fscher_data *data = i2c_get_clientdata(client); \ |
| return set_##kind##sub(client, data, buf, count, (offset), reg); \ |
| } |
| |
| #define sysfs_rw_n(kind, sub, offset, reg) \ |
| sysfs_r(kind, sub, offset, reg) \ |
| sysfs_w(kind, sub, offset, reg) \ |
| static DEVICE_ATTR(kind##offset##sub, S_IRUGO | S_IWUSR, show_##kind##offset##sub, set_##kind##offset##sub); |
| |
| #define sysfs_rw(kind, sub, reg) \ |
| sysfs_r(kind, sub, 0, reg) \ |
| sysfs_w(kind, sub, 0, reg) \ |
| static DEVICE_ATTR(kind##sub, S_IRUGO | S_IWUSR, show_##kind##0##sub, set_##kind##0##sub); |
| |
| #define sysfs_ro_n(kind, sub, offset, reg) \ |
| sysfs_r(kind, sub, offset, reg) \ |
| static DEVICE_ATTR(kind##offset##sub, S_IRUGO, show_##kind##offset##sub, NULL); |
| |
| #define sysfs_ro(kind, sub, reg) \ |
| sysfs_r(kind, sub, 0, reg) \ |
| static DEVICE_ATTR(kind, S_IRUGO, show_##kind##0##sub, NULL); |
| |
| #define sysfs_fan(offset, reg_status, reg_min, reg_ripple, reg_act) \ |
| sysfs_rw_n(pwm, , offset, reg_min) \ |
| sysfs_rw_n(fan, _status, offset, reg_status) \ |
| sysfs_rw_n(fan, _div , offset, reg_ripple) \ |
| sysfs_ro_n(fan, _input , offset, reg_act) |
| |
| #define sysfs_temp(offset, reg_status, reg_act) \ |
| sysfs_rw_n(temp, _status, offset, reg_status) \ |
| sysfs_ro_n(temp, _input , offset, reg_act) |
| |
| #define sysfs_in(offset, reg_act) \ |
| sysfs_ro_n(in, _input, offset, reg_act) |
| |
| #define sysfs_revision(reg_revision) \ |
| sysfs_ro(revision, , reg_revision) |
| |
| #define sysfs_alarms(reg_events) \ |
| sysfs_ro(alarms, , reg_events) |
| |
| #define sysfs_control(reg_control) \ |
| sysfs_rw(control, , reg_control) |
| |
| #define sysfs_watchdog(reg_control, reg_status, reg_preset) \ |
| sysfs_rw(watchdog, _control, reg_control) \ |
| sysfs_rw(watchdog, _status , reg_status) \ |
| sysfs_rw(watchdog, _preset , reg_preset) |
| |
| sysfs_fan(1, FSCHER_REG_FAN0_STATE, FSCHER_REG_FAN0_MIN, |
| FSCHER_REG_FAN0_RIPPLE, FSCHER_REG_FAN0_ACT) |
| sysfs_fan(2, FSCHER_REG_FAN1_STATE, FSCHER_REG_FAN1_MIN, |
| FSCHER_REG_FAN1_RIPPLE, FSCHER_REG_FAN1_ACT) |
| sysfs_fan(3, FSCHER_REG_FAN2_STATE, FSCHER_REG_FAN2_MIN, |
| FSCHER_REG_FAN2_RIPPLE, FSCHER_REG_FAN2_ACT) |
| |
| sysfs_temp(1, FSCHER_REG_TEMP0_STATE, FSCHER_REG_TEMP0_ACT) |
| sysfs_temp(2, FSCHER_REG_TEMP1_STATE, FSCHER_REG_TEMP1_ACT) |
| sysfs_temp(3, FSCHER_REG_TEMP2_STATE, FSCHER_REG_TEMP2_ACT) |
| |
| sysfs_in(0, FSCHER_REG_VOLT_12) |
| sysfs_in(1, FSCHER_REG_VOLT_5) |
| sysfs_in(2, FSCHER_REG_VOLT_BATT) |
| |
| sysfs_revision(FSCHER_REG_REVISION) |
| sysfs_alarms(FSCHER_REG_EVENTS) |
| sysfs_control(FSCHER_REG_CONTROL) |
| sysfs_watchdog(FSCHER_REG_WDOG_CONTROL, FSCHER_REG_WDOG_STATE, FSCHER_REG_WDOG_PRESET) |
| |
| #define device_create_file_fan(client, offset) \ |
| do { \ |
| device_create_file(&client->dev, &dev_attr_fan##offset##_status); \ |
| device_create_file(&client->dev, &dev_attr_pwm##offset); \ |
| device_create_file(&client->dev, &dev_attr_fan##offset##_div); \ |
| device_create_file(&client->dev, &dev_attr_fan##offset##_input); \ |
| } while (0) |
| |
| #define device_create_file_temp(client, offset) \ |
| do { \ |
| device_create_file(&client->dev, &dev_attr_temp##offset##_status); \ |
| device_create_file(&client->dev, &dev_attr_temp##offset##_input); \ |
| } while (0) |
| |
| #define device_create_file_in(client, offset) \ |
| do { \ |
| device_create_file(&client->dev, &dev_attr_in##offset##_input); \ |
| } while (0) |
| |
| #define device_create_file_revision(client) \ |
| do { \ |
| device_create_file(&client->dev, &dev_attr_revision); \ |
| } while (0) |
| |
| #define device_create_file_alarms(client) \ |
| do { \ |
| device_create_file(&client->dev, &dev_attr_alarms); \ |
| } while (0) |
| |
| #define device_create_file_control(client) \ |
| do { \ |
| device_create_file(&client->dev, &dev_attr_control); \ |
| } while (0) |
| |
| #define device_create_file_watchdog(client) \ |
| do { \ |
| device_create_file(&client->dev, &dev_attr_watchdog_status); \ |
| device_create_file(&client->dev, &dev_attr_watchdog_control); \ |
| device_create_file(&client->dev, &dev_attr_watchdog_preset); \ |
| } while (0) |
| |
| /* |
| * Real code |
| */ |
| |
| static int fscher_attach_adapter(struct i2c_adapter *adapter) |
| { |
| if (!(adapter->class & I2C_CLASS_HWMON)) |
| return 0; |
| return i2c_detect(adapter, &addr_data, fscher_detect); |
| } |
| |
| static int fscher_detect(struct i2c_adapter *adapter, int address, int kind) |
| { |
| struct i2c_client *new_client; |
| struct fscher_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 i2c_smbus_read_byte_data. */ |
| if (!(data = kmalloc(sizeof(struct fscher_data), GFP_KERNEL))) { |
| err = -ENOMEM; |
| goto exit; |
| } |
| memset(data, 0, sizeof(struct fscher_data)); |
| |
| /* The common I2C client data is placed right before the |
| * Hermes-specific data. */ |
| new_client = &data->client; |
| i2c_set_clientdata(new_client, data); |
| new_client->addr = address; |
| new_client->adapter = adapter; |
| new_client->driver = &fscher_driver; |
| new_client->flags = 0; |
| |
| /* Do the remaining detection unless force or force_fscher parameter */ |
| if (kind < 0) { |
| if ((i2c_smbus_read_byte_data(new_client, |
| FSCHER_REG_IDENT_0) != 0x48) /* 'H' */ |
| || (i2c_smbus_read_byte_data(new_client, |
| FSCHER_REG_IDENT_1) != 0x45) /* 'E' */ |
| || (i2c_smbus_read_byte_data(new_client, |
| FSCHER_REG_IDENT_2) != 0x52)) /* 'R' */ |
| goto exit_free; |
| } |
| |
| /* Fill in the remaining client fields and put it into the |
| * global list */ |
| strlcpy(new_client->name, "fscher", 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; |
| |
| fscher_init_client(new_client); |
| |
| /* Register sysfs hooks */ |
| device_create_file_revision(new_client); |
| device_create_file_alarms(new_client); |
| device_create_file_control(new_client); |
| device_create_file_watchdog(new_client); |
| |
| device_create_file_in(new_client, 0); |
| device_create_file_in(new_client, 1); |
| device_create_file_in(new_client, 2); |
| |
| device_create_file_fan(new_client, 1); |
| device_create_file_fan(new_client, 2); |
| device_create_file_fan(new_client, 3); |
| |
| device_create_file_temp(new_client, 1); |
| device_create_file_temp(new_client, 2); |
| device_create_file_temp(new_client, 3); |
| |
| return 0; |
| |
| exit_free: |
| kfree(data); |
| exit: |
| return err; |
| } |
| |
| static int fscher_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; |
| } |
| |
| static int fscher_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 fscher_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 FSC Hermes. */ |
| static void fscher_init_client(struct i2c_client *client) |
| { |
| struct fscher_data *data = i2c_get_clientdata(client); |
| |
| /* Read revision from chip */ |
| data->revision = fscher_read_value(client, FSCHER_REG_REVISION); |
| } |
| |
| static struct fscher_data *fscher_update_device(struct device *dev) |
| { |
| struct i2c_client *client = to_i2c_client(dev); |
| struct fscher_data *data = i2c_get_clientdata(client); |
| |
| down(&data->update_lock); |
| |
| if (time_after(jiffies, data->last_updated + 2 * HZ) || !data->valid) { |
| |
| dev_dbg(&client->dev, "Starting fscher update\n"); |
| |
| data->temp_act[0] = fscher_read_value(client, FSCHER_REG_TEMP0_ACT); |
| data->temp_act[1] = fscher_read_value(client, FSCHER_REG_TEMP1_ACT); |
| data->temp_act[2] = fscher_read_value(client, FSCHER_REG_TEMP2_ACT); |
| data->temp_status[0] = fscher_read_value(client, FSCHER_REG_TEMP0_STATE); |
| data->temp_status[1] = fscher_read_value(client, FSCHER_REG_TEMP1_STATE); |
| data->temp_status[2] = fscher_read_value(client, FSCHER_REG_TEMP2_STATE); |
| |
| data->volt[0] = fscher_read_value(client, FSCHER_REG_VOLT_12); |
| data->volt[1] = fscher_read_value(client, FSCHER_REG_VOLT_5); |
| data->volt[2] = fscher_read_value(client, FSCHER_REG_VOLT_BATT); |
| |
| data->fan_act[0] = fscher_read_value(client, FSCHER_REG_FAN0_ACT); |
| data->fan_act[1] = fscher_read_value(client, FSCHER_REG_FAN1_ACT); |
| data->fan_act[2] = fscher_read_value(client, FSCHER_REG_FAN2_ACT); |
| data->fan_status[0] = fscher_read_value(client, FSCHER_REG_FAN0_STATE); |
| data->fan_status[1] = fscher_read_value(client, FSCHER_REG_FAN1_STATE); |
| data->fan_status[2] = fscher_read_value(client, FSCHER_REG_FAN2_STATE); |
| data->fan_min[0] = fscher_read_value(client, FSCHER_REG_FAN0_MIN); |
| data->fan_min[1] = fscher_read_value(client, FSCHER_REG_FAN1_MIN); |
| data->fan_min[2] = fscher_read_value(client, FSCHER_REG_FAN2_MIN); |
| data->fan_ripple[0] = fscher_read_value(client, FSCHER_REG_FAN0_RIPPLE); |
| data->fan_ripple[1] = fscher_read_value(client, FSCHER_REG_FAN1_RIPPLE); |
| data->fan_ripple[2] = fscher_read_value(client, FSCHER_REG_FAN2_RIPPLE); |
| |
| data->watchdog[0] = fscher_read_value(client, FSCHER_REG_WDOG_PRESET); |
| data->watchdog[1] = fscher_read_value(client, FSCHER_REG_WDOG_STATE); |
| data->watchdog[2] = fscher_read_value(client, FSCHER_REG_WDOG_CONTROL); |
| |
| data->global_event = fscher_read_value(client, FSCHER_REG_EVENT_STATE); |
| |
| data->last_updated = jiffies; |
| data->valid = 1; |
| } |
| |
| up(&data->update_lock); |
| |
| return data; |
| } |
| |
| |
| |
| #define FAN_INDEX_FROM_NUM(nr) ((nr) - 1) |
| |
| static ssize_t set_fan_status(struct i2c_client *client, struct fscher_data *data, |
| const char *buf, size_t count, int nr, int reg) |
| { |
| /* bits 0..1, 3..7 reserved => mask with 0x04 */ |
| unsigned long v = simple_strtoul(buf, NULL, 10) & 0x04; |
| |
| down(&data->update_lock); |
| data->fan_status[FAN_INDEX_FROM_NUM(nr)] &= ~v; |
| fscher_write_value(client, reg, v); |
| up(&data->update_lock); |
| return count; |
| } |
| |
| static ssize_t show_fan_status(struct fscher_data *data, char *buf, int nr) |
| { |
| /* bits 0..1, 3..7 reserved => mask with 0x04 */ |
| return sprintf(buf, "%u\n", data->fan_status[FAN_INDEX_FROM_NUM(nr)] & 0x04); |
| } |
| |
| static ssize_t set_pwm(struct i2c_client *client, struct fscher_data *data, |
| const char *buf, size_t count, int nr, int reg) |
| { |
| unsigned long v = simple_strtoul(buf, NULL, 10); |
| |
| down(&data->update_lock); |
| data->fan_min[FAN_INDEX_FROM_NUM(nr)] = v > 0xff ? 0xff : v; |
| fscher_write_value(client, reg, data->fan_min[FAN_INDEX_FROM_NUM(nr)]); |
| up(&data->update_lock); |
| return count; |
| } |
| |
| static ssize_t show_pwm(struct fscher_data *data, char *buf, int nr) |
| { |
| return sprintf(buf, "%u\n", data->fan_min[FAN_INDEX_FROM_NUM(nr)]); |
| } |
| |
| static ssize_t set_fan_div(struct i2c_client *client, struct fscher_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_div value %ld not " |
| "supported. Choose one of 2, 4 or 8!\n", v); |
| return -EINVAL; |
| } |
| |
| down(&data->update_lock); |
| |
| /* bits 2..7 reserved => mask with 0x03 */ |
| data->fan_ripple[FAN_INDEX_FROM_NUM(nr)] &= ~0x03; |
| data->fan_ripple[FAN_INDEX_FROM_NUM(nr)] |= v; |
| |
| fscher_write_value(client, reg, data->fan_ripple[FAN_INDEX_FROM_NUM(nr)]); |
| up(&data->update_lock); |
| return count; |
| } |
| |
| static ssize_t show_fan_div(struct fscher_data *data, char *buf, int nr) |
| { |
| /* bits 2..7 reserved => mask with 0x03 */ |
| return sprintf(buf, "%u\n", 1 << (data->fan_ripple[FAN_INDEX_FROM_NUM(nr)] & 0x03)); |
| } |
| |
| #define RPM_FROM_REG(val) (val*60) |
| |
| static ssize_t show_fan_input (struct fscher_data *data, char *buf, int nr) |
| { |
| return sprintf(buf, "%u\n", RPM_FROM_REG(data->fan_act[FAN_INDEX_FROM_NUM(nr)])); |
| } |
| |
| |
| |
| #define TEMP_INDEX_FROM_NUM(nr) ((nr) - 1) |
| |
| static ssize_t set_temp_status(struct i2c_client *client, struct fscher_data *data, |
| const char *buf, size_t count, int nr, int reg) |
| { |
| /* bits 2..7 reserved, 0 read only => mask with 0x02 */ |
| unsigned long v = simple_strtoul(buf, NULL, 10) & 0x02; |
| |
| down(&data->update_lock); |
| data->temp_status[TEMP_INDEX_FROM_NUM(nr)] &= ~v; |
| fscher_write_value(client, reg, v); |
| up(&data->update_lock); |
| return count; |
| } |
| |
| static ssize_t show_temp_status(struct fscher_data *data, char *buf, int nr) |
| { |
| /* bits 2..7 reserved => mask with 0x03 */ |
| return sprintf(buf, "%u\n", data->temp_status[TEMP_INDEX_FROM_NUM(nr)] & 0x03); |
| } |
| |
| #define TEMP_FROM_REG(val) (((val) - 128) * 1000) |
| |
| static ssize_t show_temp_input(struct fscher_data *data, char *buf, int nr) |
| { |
| return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_act[TEMP_INDEX_FROM_NUM(nr)])); |
| } |
| |
| /* |
| * The final conversion is specified in sensors.conf, as it depends on |
| * mainboard specific values. We export the registers contents as |
| * pseudo-hundredths-of-Volts (range 0V - 2.55V). Not that it makes much |
| * sense per se, but it minimizes the conversions count and keeps the |
| * values within a usual range. |
| */ |
| #define VOLT_FROM_REG(val) ((val) * 10) |
| |
| static ssize_t show_in_input(struct fscher_data *data, char *buf, int nr) |
| { |
| return sprintf(buf, "%u\n", VOLT_FROM_REG(data->volt[nr])); |
| } |
| |
| |
| |
| static ssize_t show_revision(struct fscher_data *data, char *buf, int nr) |
| { |
| return sprintf(buf, "%u\n", data->revision); |
| } |
| |
| |
| |
| static ssize_t show_alarms(struct fscher_data *data, char *buf, int nr) |
| { |
| /* bits 2, 5..6 reserved => mask with 0x9b */ |
| return sprintf(buf, "%u\n", data->global_event & 0x9b); |
| } |
| |
| |
| |
| static ssize_t set_control(struct i2c_client *client, struct fscher_data *data, |
| const char *buf, size_t count, int nr, int reg) |
| { |
| /* bits 1..7 reserved => mask with 0x01 */ |
| unsigned long v = simple_strtoul(buf, NULL, 10) & 0x01; |
| |
| down(&data->update_lock); |
| data->global_control &= ~v; |
| fscher_write_value(client, reg, v); |
| up(&data->update_lock); |
| return count; |
| } |
| |
| static ssize_t show_control(struct fscher_data *data, char *buf, int nr) |
| { |
| /* bits 1..7 reserved => mask with 0x01 */ |
| return sprintf(buf, "%u\n", data->global_control & 0x01); |
| } |
| |
| |
| |
| static ssize_t set_watchdog_control(struct i2c_client *client, struct |
| fscher_data *data, const char *buf, size_t count, |
| int nr, int reg) |
| { |
| /* bits 0..3 reserved => mask with 0xf0 */ |
| unsigned long v = simple_strtoul(buf, NULL, 10) & 0xf0; |
| |
| down(&data->update_lock); |
| data->watchdog[2] &= ~0xf0; |
| data->watchdog[2] |= v; |
| fscher_write_value(client, reg, data->watchdog[2]); |
| up(&data->update_lock); |
| return count; |
| } |
| |
| static ssize_t show_watchdog_control(struct fscher_data *data, char *buf, int nr) |
| { |
| /* bits 0..3 reserved, bit 5 write only => mask with 0xd0 */ |
| return sprintf(buf, "%u\n", data->watchdog[2] & 0xd0); |
| } |
| |
| static ssize_t set_watchdog_status(struct i2c_client *client, struct fscher_data *data, |
| const char *buf, size_t count, int nr, int reg) |
| { |
| /* bits 0, 2..7 reserved => mask with 0x02 */ |
| unsigned long v = simple_strtoul(buf, NULL, 10) & 0x02; |
| |
| down(&data->update_lock); |
| data->watchdog[1] &= ~v; |
| fscher_write_value(client, reg, v); |
| up(&data->update_lock); |
| return count; |
| } |
| |
| static ssize_t show_watchdog_status(struct fscher_data *data, char *buf, int nr) |
| { |
| /* bits 0, 2..7 reserved => mask with 0x02 */ |
| return sprintf(buf, "%u\n", data->watchdog[1] & 0x02); |
| } |
| |
| static ssize_t set_watchdog_preset(struct i2c_client *client, struct fscher_data *data, |
| const char *buf, size_t count, int nr, int reg) |
| { |
| unsigned long v = simple_strtoul(buf, NULL, 10) & 0xff; |
| |
| down(&data->update_lock); |
| data->watchdog[0] = v; |
| fscher_write_value(client, reg, data->watchdog[0]); |
| up(&data->update_lock); |
| return count; |
| } |
| |
| static ssize_t show_watchdog_preset(struct fscher_data *data, char *buf, int nr) |
| { |
| return sprintf(buf, "%u\n", data->watchdog[0]); |
| } |
| |
| static int __init sensors_fscher_init(void) |
| { |
| return i2c_add_driver(&fscher_driver); |
| } |
| |
| static void __exit sensors_fscher_exit(void) |
| { |
| i2c_del_driver(&fscher_driver); |
| } |
| |
| MODULE_AUTHOR("Reinhard Nissl <rnissl@gmx.de>"); |
| MODULE_DESCRIPTION("FSC Hermes driver"); |
| MODULE_LICENSE("GPL"); |
| |
| module_init(sensors_fscher_init); |
| module_exit(sensors_fscher_exit); |