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832 lines
24 KiB
832 lines
24 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* |
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* Support for the FTS Systemmonitoring Chip "Teutates" |
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* |
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* Copyright (C) 2016 Fujitsu Technology Solutions GmbH, |
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* Thilo Cestonaro <[email protected]> |
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*/ |
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#include <linux/err.h> |
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#include <linux/fs.h> |
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#include <linux/hwmon.h> |
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#include <linux/hwmon-sysfs.h> |
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#include <linux/i2c.h> |
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#include <linux/init.h> |
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#include <linux/jiffies.h> |
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#include <linux/module.h> |
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#include <linux/mutex.h> |
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#include <linux/slab.h> |
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#include <linux/sysfs.h> |
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#include <linux/uaccess.h> |
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#include <linux/watchdog.h> |
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#define FTS_DEVICE_ID_REG 0x0000 |
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#define FTS_DEVICE_REVISION_REG 0x0001 |
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#define FTS_DEVICE_STATUS_REG 0x0004 |
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#define FTS_SATELLITE_STATUS_REG 0x0005 |
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#define FTS_EVENT_STATUS_REG 0x0006 |
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#define FTS_GLOBAL_CONTROL_REG 0x0007 |
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#define FTS_DEVICE_DETECT_REG_1 0x0C |
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#define FTS_DEVICE_DETECT_REG_2 0x0D |
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#define FTS_DEVICE_DETECT_REG_3 0x0E |
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#define FTS_SENSOR_EVENT_REG 0x0010 |
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#define FTS_FAN_EVENT_REG 0x0014 |
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#define FTS_FAN_PRESENT_REG 0x0015 |
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#define FTS_POWER_ON_TIME_COUNTER_A 0x007A |
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#define FTS_POWER_ON_TIME_COUNTER_B 0x007B |
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#define FTS_POWER_ON_TIME_COUNTER_C 0x007C |
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#define FTS_PAGE_SELECT_REG 0x007F |
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#define FTS_WATCHDOG_TIME_PRESET 0x000B |
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#define FTS_WATCHDOG_CONTROL 0x5081 |
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#define FTS_NO_FAN_SENSORS 0x08 |
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#define FTS_NO_TEMP_SENSORS 0x10 |
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#define FTS_NO_VOLT_SENSORS 0x04 |
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static const unsigned short normal_i2c[] = { 0x73, I2C_CLIENT_END }; |
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static const struct i2c_device_id fts_id[] = { |
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{ "ftsteutates", 0 }, |
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{ } |
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}; |
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MODULE_DEVICE_TABLE(i2c, fts_id); |
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enum WATCHDOG_RESOLUTION { |
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seconds = 1, |
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minutes = 60 |
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}; |
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struct fts_data { |
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struct i2c_client *client; |
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/* update sensor data lock */ |
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struct mutex update_lock; |
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/* read/write register lock */ |
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struct mutex access_lock; |
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unsigned long last_updated; /* in jiffies */ |
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struct watchdog_device wdd; |
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enum WATCHDOG_RESOLUTION resolution; |
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bool valid; /* false until following fields are valid */ |
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u8 volt[FTS_NO_VOLT_SENSORS]; |
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u8 temp_input[FTS_NO_TEMP_SENSORS]; |
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u8 temp_alarm; |
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u8 fan_present; |
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u8 fan_input[FTS_NO_FAN_SENSORS]; /* in rps */ |
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u8 fan_source[FTS_NO_FAN_SENSORS]; |
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u8 fan_alarm; |
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}; |
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#define FTS_REG_FAN_INPUT(idx) ((idx) + 0x20) |
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#define FTS_REG_FAN_SOURCE(idx) ((idx) + 0x30) |
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#define FTS_REG_FAN_CONTROL(idx) (((idx) << 16) + 0x4881) |
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#define FTS_REG_TEMP_INPUT(idx) ((idx) + 0x40) |
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#define FTS_REG_TEMP_CONTROL(idx) (((idx) << 16) + 0x0681) |
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#define FTS_REG_VOLT(idx) ((idx) + 0x18) |
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/*****************************************************************************/ |
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/* I2C Helper functions */ |
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/*****************************************************************************/ |
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static int fts_read_byte(struct i2c_client *client, unsigned short reg) |
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{ |
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int ret; |
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unsigned char page = reg >> 8; |
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struct fts_data *data = dev_get_drvdata(&client->dev); |
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mutex_lock(&data->access_lock); |
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dev_dbg(&client->dev, "page select - page: 0x%.02x\n", page); |
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ret = i2c_smbus_write_byte_data(client, FTS_PAGE_SELECT_REG, page); |
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if (ret < 0) |
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goto error; |
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reg &= 0xFF; |
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ret = i2c_smbus_read_byte_data(client, reg); |
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dev_dbg(&client->dev, "read - reg: 0x%.02x: val: 0x%.02x\n", reg, ret); |
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error: |
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mutex_unlock(&data->access_lock); |
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return ret; |
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} |
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static int fts_write_byte(struct i2c_client *client, unsigned short reg, |
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unsigned char value) |
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{ |
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int ret; |
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unsigned char page = reg >> 8; |
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struct fts_data *data = dev_get_drvdata(&client->dev); |
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mutex_lock(&data->access_lock); |
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dev_dbg(&client->dev, "page select - page: 0x%.02x\n", page); |
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ret = i2c_smbus_write_byte_data(client, FTS_PAGE_SELECT_REG, page); |
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if (ret < 0) |
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goto error; |
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reg &= 0xFF; |
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dev_dbg(&client->dev, |
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"write - reg: 0x%.02x: val: 0x%.02x\n", reg, value); |
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ret = i2c_smbus_write_byte_data(client, reg, value); |
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error: |
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mutex_unlock(&data->access_lock); |
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return ret; |
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} |
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/*****************************************************************************/ |
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/* Data Updater Helper function */ |
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/*****************************************************************************/ |
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static int fts_update_device(struct fts_data *data) |
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{ |
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int i; |
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int err = 0; |
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mutex_lock(&data->update_lock); |
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if (!time_after(jiffies, data->last_updated + 2 * HZ) && data->valid) |
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goto exit; |
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err = fts_read_byte(data->client, FTS_DEVICE_STATUS_REG); |
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if (err < 0) |
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goto exit; |
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data->valid = !!(err & 0x02); /* Data not ready yet */ |
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if (unlikely(!data->valid)) { |
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err = -EAGAIN; |
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goto exit; |
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} |
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err = fts_read_byte(data->client, FTS_FAN_PRESENT_REG); |
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if (err < 0) |
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goto exit; |
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data->fan_present = err; |
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err = fts_read_byte(data->client, FTS_FAN_EVENT_REG); |
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if (err < 0) |
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goto exit; |
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data->fan_alarm = err; |
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for (i = 0; i < FTS_NO_FAN_SENSORS; i++) { |
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if (data->fan_present & BIT(i)) { |
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err = fts_read_byte(data->client, FTS_REG_FAN_INPUT(i)); |
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if (err < 0) |
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goto exit; |
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data->fan_input[i] = err; |
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err = fts_read_byte(data->client, |
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FTS_REG_FAN_SOURCE(i)); |
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if (err < 0) |
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goto exit; |
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data->fan_source[i] = err; |
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} else { |
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data->fan_input[i] = 0; |
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data->fan_source[i] = 0; |
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} |
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} |
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err = fts_read_byte(data->client, FTS_SENSOR_EVENT_REG); |
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if (err < 0) |
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goto exit; |
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data->temp_alarm = err; |
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for (i = 0; i < FTS_NO_TEMP_SENSORS; i++) { |
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err = fts_read_byte(data->client, FTS_REG_TEMP_INPUT(i)); |
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if (err < 0) |
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goto exit; |
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data->temp_input[i] = err; |
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} |
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for (i = 0; i < FTS_NO_VOLT_SENSORS; i++) { |
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err = fts_read_byte(data->client, FTS_REG_VOLT(i)); |
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if (err < 0) |
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goto exit; |
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data->volt[i] = err; |
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} |
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data->last_updated = jiffies; |
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err = 0; |
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exit: |
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mutex_unlock(&data->update_lock); |
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return err; |
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} |
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/*****************************************************************************/ |
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/* Watchdog functions */ |
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/*****************************************************************************/ |
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static int fts_wd_set_resolution(struct fts_data *data, |
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enum WATCHDOG_RESOLUTION resolution) |
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{ |
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int ret; |
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if (data->resolution == resolution) |
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return 0; |
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ret = fts_read_byte(data->client, FTS_WATCHDOG_CONTROL); |
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if (ret < 0) |
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return ret; |
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if ((resolution == seconds && ret & BIT(1)) || |
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(resolution == minutes && (ret & BIT(1)) == 0)) { |
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data->resolution = resolution; |
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return 0; |
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} |
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if (resolution == seconds) |
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ret |= BIT(1); |
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else |
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ret &= ~BIT(1); |
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ret = fts_write_byte(data->client, FTS_WATCHDOG_CONTROL, ret); |
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if (ret < 0) |
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return ret; |
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data->resolution = resolution; |
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return ret; |
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} |
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static int fts_wd_set_timeout(struct watchdog_device *wdd, unsigned int timeout) |
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{ |
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struct fts_data *data; |
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enum WATCHDOG_RESOLUTION resolution = seconds; |
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int ret; |
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data = watchdog_get_drvdata(wdd); |
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/* switch watchdog resolution to minutes if timeout does not fit |
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* into a byte |
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*/ |
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if (timeout > 0xFF) { |
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timeout = DIV_ROUND_UP(timeout, 60) * 60; |
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resolution = minutes; |
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} |
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ret = fts_wd_set_resolution(data, resolution); |
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if (ret < 0) |
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return ret; |
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wdd->timeout = timeout; |
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return 0; |
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} |
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static int fts_wd_start(struct watchdog_device *wdd) |
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{ |
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struct fts_data *data = watchdog_get_drvdata(wdd); |
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return fts_write_byte(data->client, FTS_WATCHDOG_TIME_PRESET, |
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wdd->timeout / (u8)data->resolution); |
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} |
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static int fts_wd_stop(struct watchdog_device *wdd) |
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{ |
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struct fts_data *data; |
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data = watchdog_get_drvdata(wdd); |
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return fts_write_byte(data->client, FTS_WATCHDOG_TIME_PRESET, 0); |
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} |
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static const struct watchdog_info fts_wd_info = { |
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.options = WDIOF_SETTIMEOUT | WDIOF_KEEPALIVEPING | WDIOF_MAGICCLOSE, |
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.identity = "FTS Teutates Hardware Watchdog", |
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}; |
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static const struct watchdog_ops fts_wd_ops = { |
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.owner = THIS_MODULE, |
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.start = fts_wd_start, |
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.stop = fts_wd_stop, |
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.set_timeout = fts_wd_set_timeout, |
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}; |
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static int fts_watchdog_init(struct fts_data *data) |
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{ |
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int timeout, ret; |
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watchdog_set_drvdata(&data->wdd, data); |
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timeout = fts_read_byte(data->client, FTS_WATCHDOG_TIME_PRESET); |
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if (timeout < 0) |
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return timeout; |
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/* watchdog not running, set timeout to a default of 60 sec. */ |
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if (timeout == 0) { |
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ret = fts_wd_set_resolution(data, seconds); |
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if (ret < 0) |
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return ret; |
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data->wdd.timeout = 60; |
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} else { |
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ret = fts_read_byte(data->client, FTS_WATCHDOG_CONTROL); |
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if (ret < 0) |
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return ret; |
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data->resolution = ret & BIT(1) ? seconds : minutes; |
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data->wdd.timeout = timeout * (u8)data->resolution; |
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set_bit(WDOG_HW_RUNNING, &data->wdd.status); |
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} |
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/* Register our watchdog part */ |
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data->wdd.info = &fts_wd_info; |
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data->wdd.ops = &fts_wd_ops; |
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data->wdd.parent = &data->client->dev; |
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data->wdd.min_timeout = 1; |
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/* max timeout 255 minutes. */ |
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data->wdd.max_hw_heartbeat_ms = 0xFF * 60 * MSEC_PER_SEC; |
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return watchdog_register_device(&data->wdd); |
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} |
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/*****************************************************************************/ |
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/* SysFS handler functions */ |
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/*****************************************************************************/ |
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static ssize_t in_value_show(struct device *dev, |
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struct device_attribute *devattr, char *buf) |
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{ |
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struct fts_data *data = dev_get_drvdata(dev); |
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int index = to_sensor_dev_attr(devattr)->index; |
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int err; |
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err = fts_update_device(data); |
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if (err < 0) |
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return err; |
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return sprintf(buf, "%u\n", data->volt[index]); |
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} |
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static ssize_t temp_value_show(struct device *dev, |
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struct device_attribute *devattr, char *buf) |
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{ |
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struct fts_data *data = dev_get_drvdata(dev); |
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int index = to_sensor_dev_attr(devattr)->index; |
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int err; |
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err = fts_update_device(data); |
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if (err < 0) |
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return err; |
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return sprintf(buf, "%u\n", data->temp_input[index]); |
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} |
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static ssize_t temp_fault_show(struct device *dev, |
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struct device_attribute *devattr, char *buf) |
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{ |
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struct fts_data *data = dev_get_drvdata(dev); |
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int index = to_sensor_dev_attr(devattr)->index; |
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int err; |
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err = fts_update_device(data); |
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if (err < 0) |
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return err; |
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/* 00h Temperature = Sensor Error */ |
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return sprintf(buf, "%d\n", data->temp_input[index] == 0); |
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} |
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static ssize_t temp_alarm_show(struct device *dev, |
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struct device_attribute *devattr, char *buf) |
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{ |
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struct fts_data *data = dev_get_drvdata(dev); |
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int index = to_sensor_dev_attr(devattr)->index; |
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int err; |
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err = fts_update_device(data); |
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if (err < 0) |
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return err; |
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return sprintf(buf, "%u\n", !!(data->temp_alarm & BIT(index))); |
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} |
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static ssize_t |
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temp_alarm_store(struct device *dev, struct device_attribute *devattr, |
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const char *buf, size_t count) |
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{ |
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struct fts_data *data = dev_get_drvdata(dev); |
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int index = to_sensor_dev_attr(devattr)->index; |
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long ret; |
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ret = fts_update_device(data); |
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if (ret < 0) |
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return ret; |
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if (kstrtoul(buf, 10, &ret) || ret != 0) |
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return -EINVAL; |
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mutex_lock(&data->update_lock); |
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ret = fts_read_byte(data->client, FTS_REG_TEMP_CONTROL(index)); |
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if (ret < 0) |
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goto error; |
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ret = fts_write_byte(data->client, FTS_REG_TEMP_CONTROL(index), |
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ret | 0x1); |
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if (ret < 0) |
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goto error; |
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data->valid = false; |
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ret = count; |
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error: |
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mutex_unlock(&data->update_lock); |
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return ret; |
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} |
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static ssize_t fan_value_show(struct device *dev, |
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struct device_attribute *devattr, char *buf) |
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{ |
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struct fts_data *data = dev_get_drvdata(dev); |
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int index = to_sensor_dev_attr(devattr)->index; |
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int err; |
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err = fts_update_device(data); |
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if (err < 0) |
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return err; |
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return sprintf(buf, "%u\n", data->fan_input[index]); |
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} |
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static ssize_t fan_source_show(struct device *dev, |
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struct device_attribute *devattr, char *buf) |
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{ |
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struct fts_data *data = dev_get_drvdata(dev); |
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int index = to_sensor_dev_attr(devattr)->index; |
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int err; |
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err = fts_update_device(data); |
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if (err < 0) |
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return err; |
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return sprintf(buf, "%u\n", data->fan_source[index]); |
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} |
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static ssize_t fan_alarm_show(struct device *dev, |
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struct device_attribute *devattr, char *buf) |
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{ |
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struct fts_data *data = dev_get_drvdata(dev); |
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int index = to_sensor_dev_attr(devattr)->index; |
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int err; |
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err = fts_update_device(data); |
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if (err < 0) |
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return err; |
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return sprintf(buf, "%d\n", !!(data->fan_alarm & BIT(index))); |
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} |
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static ssize_t |
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fan_alarm_store(struct device *dev, struct device_attribute *devattr, |
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const char *buf, size_t count) |
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{ |
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struct fts_data *data = dev_get_drvdata(dev); |
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int index = to_sensor_dev_attr(devattr)->index; |
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long ret; |
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ret = fts_update_device(data); |
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if (ret < 0) |
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return ret; |
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if (kstrtoul(buf, 10, &ret) || ret != 0) |
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return -EINVAL; |
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mutex_lock(&data->update_lock); |
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ret = fts_read_byte(data->client, FTS_REG_FAN_CONTROL(index)); |
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if (ret < 0) |
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goto error; |
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ret = fts_write_byte(data->client, FTS_REG_FAN_CONTROL(index), |
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ret | 0x1); |
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if (ret < 0) |
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goto error; |
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data->valid = false; |
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ret = count; |
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error: |
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mutex_unlock(&data->update_lock); |
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return ret; |
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} |
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/*****************************************************************************/ |
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/* SysFS structs */ |
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/*****************************************************************************/ |
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|
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/* Temperature sensors */ |
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static SENSOR_DEVICE_ATTR_RO(temp1_input, temp_value, 0); |
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static SENSOR_DEVICE_ATTR_RO(temp2_input, temp_value, 1); |
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static SENSOR_DEVICE_ATTR_RO(temp3_input, temp_value, 2); |
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static SENSOR_DEVICE_ATTR_RO(temp4_input, temp_value, 3); |
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static SENSOR_DEVICE_ATTR_RO(temp5_input, temp_value, 4); |
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static SENSOR_DEVICE_ATTR_RO(temp6_input, temp_value, 5); |
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static SENSOR_DEVICE_ATTR_RO(temp7_input, temp_value, 6); |
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static SENSOR_DEVICE_ATTR_RO(temp8_input, temp_value, 7); |
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static SENSOR_DEVICE_ATTR_RO(temp9_input, temp_value, 8); |
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static SENSOR_DEVICE_ATTR_RO(temp10_input, temp_value, 9); |
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static SENSOR_DEVICE_ATTR_RO(temp11_input, temp_value, 10); |
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static SENSOR_DEVICE_ATTR_RO(temp12_input, temp_value, 11); |
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static SENSOR_DEVICE_ATTR_RO(temp13_input, temp_value, 12); |
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static SENSOR_DEVICE_ATTR_RO(temp14_input, temp_value, 13); |
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static SENSOR_DEVICE_ATTR_RO(temp15_input, temp_value, 14); |
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static SENSOR_DEVICE_ATTR_RO(temp16_input, temp_value, 15); |
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static SENSOR_DEVICE_ATTR_RO(temp1_fault, temp_fault, 0); |
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static SENSOR_DEVICE_ATTR_RO(temp2_fault, temp_fault, 1); |
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static SENSOR_DEVICE_ATTR_RO(temp3_fault, temp_fault, 2); |
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static SENSOR_DEVICE_ATTR_RO(temp4_fault, temp_fault, 3); |
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static SENSOR_DEVICE_ATTR_RO(temp5_fault, temp_fault, 4); |
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static SENSOR_DEVICE_ATTR_RO(temp6_fault, temp_fault, 5); |
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static SENSOR_DEVICE_ATTR_RO(temp7_fault, temp_fault, 6); |
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static SENSOR_DEVICE_ATTR_RO(temp8_fault, temp_fault, 7); |
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static SENSOR_DEVICE_ATTR_RO(temp9_fault, temp_fault, 8); |
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static SENSOR_DEVICE_ATTR_RO(temp10_fault, temp_fault, 9); |
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static SENSOR_DEVICE_ATTR_RO(temp11_fault, temp_fault, 10); |
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static SENSOR_DEVICE_ATTR_RO(temp12_fault, temp_fault, 11); |
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static SENSOR_DEVICE_ATTR_RO(temp13_fault, temp_fault, 12); |
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static SENSOR_DEVICE_ATTR_RO(temp14_fault, temp_fault, 13); |
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static SENSOR_DEVICE_ATTR_RO(temp15_fault, temp_fault, 14); |
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static SENSOR_DEVICE_ATTR_RO(temp16_fault, temp_fault, 15); |
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|
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static SENSOR_DEVICE_ATTR_RW(temp1_alarm, temp_alarm, 0); |
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static SENSOR_DEVICE_ATTR_RW(temp2_alarm, temp_alarm, 1); |
|
static SENSOR_DEVICE_ATTR_RW(temp3_alarm, temp_alarm, 2); |
|
static SENSOR_DEVICE_ATTR_RW(temp4_alarm, temp_alarm, 3); |
|
static SENSOR_DEVICE_ATTR_RW(temp5_alarm, temp_alarm, 4); |
|
static SENSOR_DEVICE_ATTR_RW(temp6_alarm, temp_alarm, 5); |
|
static SENSOR_DEVICE_ATTR_RW(temp7_alarm, temp_alarm, 6); |
|
static SENSOR_DEVICE_ATTR_RW(temp8_alarm, temp_alarm, 7); |
|
static SENSOR_DEVICE_ATTR_RW(temp9_alarm, temp_alarm, 8); |
|
static SENSOR_DEVICE_ATTR_RW(temp10_alarm, temp_alarm, 9); |
|
static SENSOR_DEVICE_ATTR_RW(temp11_alarm, temp_alarm, 10); |
|
static SENSOR_DEVICE_ATTR_RW(temp12_alarm, temp_alarm, 11); |
|
static SENSOR_DEVICE_ATTR_RW(temp13_alarm, temp_alarm, 12); |
|
static SENSOR_DEVICE_ATTR_RW(temp14_alarm, temp_alarm, 13); |
|
static SENSOR_DEVICE_ATTR_RW(temp15_alarm, temp_alarm, 14); |
|
static SENSOR_DEVICE_ATTR_RW(temp16_alarm, temp_alarm, 15); |
|
|
|
static struct attribute *fts_temp_attrs[] = { |
|
&sensor_dev_attr_temp1_input.dev_attr.attr, |
|
&sensor_dev_attr_temp2_input.dev_attr.attr, |
|
&sensor_dev_attr_temp3_input.dev_attr.attr, |
|
&sensor_dev_attr_temp4_input.dev_attr.attr, |
|
&sensor_dev_attr_temp5_input.dev_attr.attr, |
|
&sensor_dev_attr_temp6_input.dev_attr.attr, |
|
&sensor_dev_attr_temp7_input.dev_attr.attr, |
|
&sensor_dev_attr_temp8_input.dev_attr.attr, |
|
&sensor_dev_attr_temp9_input.dev_attr.attr, |
|
&sensor_dev_attr_temp10_input.dev_attr.attr, |
|
&sensor_dev_attr_temp11_input.dev_attr.attr, |
|
&sensor_dev_attr_temp12_input.dev_attr.attr, |
|
&sensor_dev_attr_temp13_input.dev_attr.attr, |
|
&sensor_dev_attr_temp14_input.dev_attr.attr, |
|
&sensor_dev_attr_temp15_input.dev_attr.attr, |
|
&sensor_dev_attr_temp16_input.dev_attr.attr, |
|
|
|
&sensor_dev_attr_temp1_fault.dev_attr.attr, |
|
&sensor_dev_attr_temp2_fault.dev_attr.attr, |
|
&sensor_dev_attr_temp3_fault.dev_attr.attr, |
|
&sensor_dev_attr_temp4_fault.dev_attr.attr, |
|
&sensor_dev_attr_temp5_fault.dev_attr.attr, |
|
&sensor_dev_attr_temp6_fault.dev_attr.attr, |
|
&sensor_dev_attr_temp7_fault.dev_attr.attr, |
|
&sensor_dev_attr_temp8_fault.dev_attr.attr, |
|
&sensor_dev_attr_temp9_fault.dev_attr.attr, |
|
&sensor_dev_attr_temp10_fault.dev_attr.attr, |
|
&sensor_dev_attr_temp11_fault.dev_attr.attr, |
|
&sensor_dev_attr_temp12_fault.dev_attr.attr, |
|
&sensor_dev_attr_temp13_fault.dev_attr.attr, |
|
&sensor_dev_attr_temp14_fault.dev_attr.attr, |
|
&sensor_dev_attr_temp15_fault.dev_attr.attr, |
|
&sensor_dev_attr_temp16_fault.dev_attr.attr, |
|
|
|
&sensor_dev_attr_temp1_alarm.dev_attr.attr, |
|
&sensor_dev_attr_temp2_alarm.dev_attr.attr, |
|
&sensor_dev_attr_temp3_alarm.dev_attr.attr, |
|
&sensor_dev_attr_temp4_alarm.dev_attr.attr, |
|
&sensor_dev_attr_temp5_alarm.dev_attr.attr, |
|
&sensor_dev_attr_temp6_alarm.dev_attr.attr, |
|
&sensor_dev_attr_temp7_alarm.dev_attr.attr, |
|
&sensor_dev_attr_temp8_alarm.dev_attr.attr, |
|
&sensor_dev_attr_temp9_alarm.dev_attr.attr, |
|
&sensor_dev_attr_temp10_alarm.dev_attr.attr, |
|
&sensor_dev_attr_temp11_alarm.dev_attr.attr, |
|
&sensor_dev_attr_temp12_alarm.dev_attr.attr, |
|
&sensor_dev_attr_temp13_alarm.dev_attr.attr, |
|
&sensor_dev_attr_temp14_alarm.dev_attr.attr, |
|
&sensor_dev_attr_temp15_alarm.dev_attr.attr, |
|
&sensor_dev_attr_temp16_alarm.dev_attr.attr, |
|
NULL |
|
}; |
|
|
|
/* Fans */ |
|
static SENSOR_DEVICE_ATTR_RO(fan1_input, fan_value, 0); |
|
static SENSOR_DEVICE_ATTR_RO(fan2_input, fan_value, 1); |
|
static SENSOR_DEVICE_ATTR_RO(fan3_input, fan_value, 2); |
|
static SENSOR_DEVICE_ATTR_RO(fan4_input, fan_value, 3); |
|
static SENSOR_DEVICE_ATTR_RO(fan5_input, fan_value, 4); |
|
static SENSOR_DEVICE_ATTR_RO(fan6_input, fan_value, 5); |
|
static SENSOR_DEVICE_ATTR_RO(fan7_input, fan_value, 6); |
|
static SENSOR_DEVICE_ATTR_RO(fan8_input, fan_value, 7); |
|
|
|
static SENSOR_DEVICE_ATTR_RO(fan1_source, fan_source, 0); |
|
static SENSOR_DEVICE_ATTR_RO(fan2_source, fan_source, 1); |
|
static SENSOR_DEVICE_ATTR_RO(fan3_source, fan_source, 2); |
|
static SENSOR_DEVICE_ATTR_RO(fan4_source, fan_source, 3); |
|
static SENSOR_DEVICE_ATTR_RO(fan5_source, fan_source, 4); |
|
static SENSOR_DEVICE_ATTR_RO(fan6_source, fan_source, 5); |
|
static SENSOR_DEVICE_ATTR_RO(fan7_source, fan_source, 6); |
|
static SENSOR_DEVICE_ATTR_RO(fan8_source, fan_source, 7); |
|
|
|
static SENSOR_DEVICE_ATTR_RW(fan1_alarm, fan_alarm, 0); |
|
static SENSOR_DEVICE_ATTR_RW(fan2_alarm, fan_alarm, 1); |
|
static SENSOR_DEVICE_ATTR_RW(fan3_alarm, fan_alarm, 2); |
|
static SENSOR_DEVICE_ATTR_RW(fan4_alarm, fan_alarm, 3); |
|
static SENSOR_DEVICE_ATTR_RW(fan5_alarm, fan_alarm, 4); |
|
static SENSOR_DEVICE_ATTR_RW(fan6_alarm, fan_alarm, 5); |
|
static SENSOR_DEVICE_ATTR_RW(fan7_alarm, fan_alarm, 6); |
|
static SENSOR_DEVICE_ATTR_RW(fan8_alarm, fan_alarm, 7); |
|
|
|
static struct attribute *fts_fan_attrs[] = { |
|
&sensor_dev_attr_fan1_input.dev_attr.attr, |
|
&sensor_dev_attr_fan2_input.dev_attr.attr, |
|
&sensor_dev_attr_fan3_input.dev_attr.attr, |
|
&sensor_dev_attr_fan4_input.dev_attr.attr, |
|
&sensor_dev_attr_fan5_input.dev_attr.attr, |
|
&sensor_dev_attr_fan6_input.dev_attr.attr, |
|
&sensor_dev_attr_fan7_input.dev_attr.attr, |
|
&sensor_dev_attr_fan8_input.dev_attr.attr, |
|
|
|
&sensor_dev_attr_fan1_source.dev_attr.attr, |
|
&sensor_dev_attr_fan2_source.dev_attr.attr, |
|
&sensor_dev_attr_fan3_source.dev_attr.attr, |
|
&sensor_dev_attr_fan4_source.dev_attr.attr, |
|
&sensor_dev_attr_fan5_source.dev_attr.attr, |
|
&sensor_dev_attr_fan6_source.dev_attr.attr, |
|
&sensor_dev_attr_fan7_source.dev_attr.attr, |
|
&sensor_dev_attr_fan8_source.dev_attr.attr, |
|
|
|
&sensor_dev_attr_fan1_alarm.dev_attr.attr, |
|
&sensor_dev_attr_fan2_alarm.dev_attr.attr, |
|
&sensor_dev_attr_fan3_alarm.dev_attr.attr, |
|
&sensor_dev_attr_fan4_alarm.dev_attr.attr, |
|
&sensor_dev_attr_fan5_alarm.dev_attr.attr, |
|
&sensor_dev_attr_fan6_alarm.dev_attr.attr, |
|
&sensor_dev_attr_fan7_alarm.dev_attr.attr, |
|
&sensor_dev_attr_fan8_alarm.dev_attr.attr, |
|
NULL |
|
}; |
|
|
|
/* Voltages */ |
|
static SENSOR_DEVICE_ATTR_RO(in1_input, in_value, 0); |
|
static SENSOR_DEVICE_ATTR_RO(in2_input, in_value, 1); |
|
static SENSOR_DEVICE_ATTR_RO(in3_input, in_value, 2); |
|
static SENSOR_DEVICE_ATTR_RO(in4_input, in_value, 3); |
|
static struct attribute *fts_voltage_attrs[] = { |
|
&sensor_dev_attr_in1_input.dev_attr.attr, |
|
&sensor_dev_attr_in2_input.dev_attr.attr, |
|
&sensor_dev_attr_in3_input.dev_attr.attr, |
|
&sensor_dev_attr_in4_input.dev_attr.attr, |
|
NULL |
|
}; |
|
|
|
static const struct attribute_group fts_voltage_attr_group = { |
|
.attrs = fts_voltage_attrs |
|
}; |
|
|
|
static const struct attribute_group fts_temp_attr_group = { |
|
.attrs = fts_temp_attrs |
|
}; |
|
|
|
static const struct attribute_group fts_fan_attr_group = { |
|
.attrs = fts_fan_attrs |
|
}; |
|
|
|
static const struct attribute_group *fts_attr_groups[] = { |
|
&fts_voltage_attr_group, |
|
&fts_temp_attr_group, |
|
&fts_fan_attr_group, |
|
NULL |
|
}; |
|
|
|
/*****************************************************************************/ |
|
/* Module initialization / remove functions */ |
|
/*****************************************************************************/ |
|
static int fts_detect(struct i2c_client *client, |
|
struct i2c_board_info *info) |
|
{ |
|
int val; |
|
|
|
/* detection works with revision greater or equal to 0x2b */ |
|
val = i2c_smbus_read_byte_data(client, FTS_DEVICE_REVISION_REG); |
|
if (val < 0x2b) |
|
return -ENODEV; |
|
|
|
/* Device Detect Regs must have 0x17 0x34 and 0x54 */ |
|
val = i2c_smbus_read_byte_data(client, FTS_DEVICE_DETECT_REG_1); |
|
if (val != 0x17) |
|
return -ENODEV; |
|
|
|
val = i2c_smbus_read_byte_data(client, FTS_DEVICE_DETECT_REG_2); |
|
if (val != 0x34) |
|
return -ENODEV; |
|
|
|
val = i2c_smbus_read_byte_data(client, FTS_DEVICE_DETECT_REG_3); |
|
if (val != 0x54) |
|
return -ENODEV; |
|
|
|
/* |
|
* 0x10 == Baseboard Management Controller, 0x01 == Teutates |
|
* Device ID Reg needs to be 0x11 |
|
*/ |
|
val = i2c_smbus_read_byte_data(client, FTS_DEVICE_ID_REG); |
|
if (val != 0x11) |
|
return -ENODEV; |
|
|
|
strlcpy(info->type, fts_id[0].name, I2C_NAME_SIZE); |
|
info->flags = 0; |
|
return 0; |
|
} |
|
|
|
static int fts_remove(struct i2c_client *client) |
|
{ |
|
struct fts_data *data = dev_get_drvdata(&client->dev); |
|
|
|
watchdog_unregister_device(&data->wdd); |
|
return 0; |
|
} |
|
|
|
static int fts_probe(struct i2c_client *client) |
|
{ |
|
u8 revision; |
|
struct fts_data *data; |
|
int err; |
|
s8 deviceid; |
|
struct device *hwmon_dev; |
|
|
|
if (client->addr != 0x73) |
|
return -ENODEV; |
|
|
|
/* Baseboard Management Controller check */ |
|
deviceid = i2c_smbus_read_byte_data(client, FTS_DEVICE_ID_REG); |
|
if (deviceid > 0 && (deviceid & 0xF0) == 0x10) { |
|
switch (deviceid & 0x0F) { |
|
case 0x01: |
|
break; |
|
default: |
|
dev_dbg(&client->dev, |
|
"No Baseboard Management Controller\n"); |
|
return -ENODEV; |
|
} |
|
} else { |
|
dev_dbg(&client->dev, "No fujitsu board\n"); |
|
return -ENODEV; |
|
} |
|
|
|
data = devm_kzalloc(&client->dev, sizeof(struct fts_data), |
|
GFP_KERNEL); |
|
if (!data) |
|
return -ENOMEM; |
|
|
|
mutex_init(&data->update_lock); |
|
mutex_init(&data->access_lock); |
|
data->client = client; |
|
dev_set_drvdata(&client->dev, data); |
|
|
|
err = i2c_smbus_read_byte_data(client, FTS_DEVICE_REVISION_REG); |
|
if (err < 0) |
|
return err; |
|
revision = err; |
|
|
|
hwmon_dev = devm_hwmon_device_register_with_groups(&client->dev, |
|
"ftsteutates", |
|
data, |
|
fts_attr_groups); |
|
if (IS_ERR(hwmon_dev)) |
|
return PTR_ERR(hwmon_dev); |
|
|
|
err = fts_watchdog_init(data); |
|
if (err) |
|
return err; |
|
|
|
dev_info(&client->dev, "Detected FTS Teutates chip, revision: %d.%d\n", |
|
(revision & 0xF0) >> 4, revision & 0x0F); |
|
return 0; |
|
} |
|
|
|
/*****************************************************************************/ |
|
/* Module Details */ |
|
/*****************************************************************************/ |
|
static struct i2c_driver fts_driver = { |
|
.class = I2C_CLASS_HWMON, |
|
.driver = { |
|
.name = "ftsteutates", |
|
}, |
|
.id_table = fts_id, |
|
.probe_new = fts_probe, |
|
.remove = fts_remove, |
|
.detect = fts_detect, |
|
.address_list = normal_i2c, |
|
}; |
|
|
|
module_i2c_driver(fts_driver); |
|
|
|
MODULE_AUTHOR("Thilo Cestonaro <[email protected]>"); |
|
MODULE_DESCRIPTION("FTS Teutates driver"); |
|
MODULE_LICENSE("GPL");
|
|
|