diff options
Diffstat (limited to 'drivers/i2c/chips/fscher.c')
| -rw-r--r-- | drivers/i2c/chips/fscher.c | 691 |
1 files changed, 0 insertions, 691 deletions
diff --git a/drivers/i2c/chips/fscher.c b/drivers/i2c/chips/fscher.c deleted file mode 100644 index da41174..0000000 --- a/drivers/i2c/chips/fscher.c +++ /dev/null @@ -1,691 +0,0 @@ -/* - * 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/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); |
