833 строки
24 KiB
C
833 строки
24 KiB
C
// 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 <thilo.cestonaro@ts.fujitsu.com>
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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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/* 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);
|
|
static SENSOR_DEVICE_ATTR_RO(temp6_input, temp_value, 5);
|
|
static SENSOR_DEVICE_ATTR_RO(temp7_input, temp_value, 6);
|
|
static SENSOR_DEVICE_ATTR_RO(temp8_input, temp_value, 7);
|
|
static SENSOR_DEVICE_ATTR_RO(temp9_input, temp_value, 8);
|
|
static SENSOR_DEVICE_ATTR_RO(temp10_input, temp_value, 9);
|
|
static SENSOR_DEVICE_ATTR_RO(temp11_input, temp_value, 10);
|
|
static SENSOR_DEVICE_ATTR_RO(temp12_input, temp_value, 11);
|
|
static SENSOR_DEVICE_ATTR_RO(temp13_input, temp_value, 12);
|
|
static SENSOR_DEVICE_ATTR_RO(temp14_input, temp_value, 13);
|
|
static SENSOR_DEVICE_ATTR_RO(temp15_input, temp_value, 14);
|
|
static SENSOR_DEVICE_ATTR_RO(temp16_input, temp_value, 15);
|
|
|
|
static SENSOR_DEVICE_ATTR_RO(temp1_fault, temp_fault, 0);
|
|
static SENSOR_DEVICE_ATTR_RO(temp2_fault, temp_fault, 1);
|
|
static SENSOR_DEVICE_ATTR_RO(temp3_fault, temp_fault, 2);
|
|
static SENSOR_DEVICE_ATTR_RO(temp4_fault, temp_fault, 3);
|
|
static SENSOR_DEVICE_ATTR_RO(temp5_fault, temp_fault, 4);
|
|
static SENSOR_DEVICE_ATTR_RO(temp6_fault, temp_fault, 5);
|
|
static SENSOR_DEVICE_ATTR_RO(temp7_fault, temp_fault, 6);
|
|
static SENSOR_DEVICE_ATTR_RO(temp8_fault, temp_fault, 7);
|
|
static SENSOR_DEVICE_ATTR_RO(temp9_fault, temp_fault, 8);
|
|
static SENSOR_DEVICE_ATTR_RO(temp10_fault, temp_fault, 9);
|
|
static SENSOR_DEVICE_ATTR_RO(temp11_fault, temp_fault, 10);
|
|
static SENSOR_DEVICE_ATTR_RO(temp12_fault, temp_fault, 11);
|
|
static SENSOR_DEVICE_ATTR_RO(temp13_fault, temp_fault, 12);
|
|
static SENSOR_DEVICE_ATTR_RO(temp14_fault, temp_fault, 13);
|
|
static SENSOR_DEVICE_ATTR_RO(temp15_fault, temp_fault, 14);
|
|
static SENSOR_DEVICE_ATTR_RO(temp16_fault, temp_fault, 15);
|
|
|
|
static SENSOR_DEVICE_ATTR_RW(temp1_alarm, temp_alarm, 0);
|
|
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 <thilo.cestonaro@ts.fujitsu.com>");
|
|
MODULE_DESCRIPTION("FTS Teutates driver");
|
|
MODULE_LICENSE("GPL");
|