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/linux/Documentation/hwmon/
H A Dnzxt-smart2.rst14 This driver implements monitoring and control of fans plugged into the device.
29 If fans are plugged in/unplugged while the system is powered on, the driver
30 must be reloaded to detect configuration changes; otherwise, new fans can't
32 device has a dedicated "detect fans" command, and currently, it is executed only
35 `liquidctl`_) can be used to run "detect fans" command through hidraw interface.
50 fans, voltage for other fans. Voltage can be changed in
56 can control only the fans it detected itself, so the
58 pwm[1-3]_mode Read-only, 1 for PWM-controlled fans, 0 for other fans
H A Demc6w201.rst26 measures the speed of up to five fans, and controls the speed of
27 multiple DC fans using three Pulse Width Modulator (PWM) outputs. Note
28 that it is possible to control more than three fans by connecting two
29 fans to one PWM output. The EMC6W201 will be available in a 36-pin
H A Dlm85.rst131 TACH signal from the fans. The ADM1027 can be configured to measure the
138 To smooth the response of fans to changes in temperature, the LM85 has an
167 fans in a PC or embedded system. The EMC6D101, available in a 24-pin SSOP
217 - temperature below which fans should be off or spinning very low.
219 - temperature over which fans start to spin.
221 - temperature when fans spin at full speed.
223 - temperature when all fans will run full speed.
239 the behaviour of fans. Write 1 to let fans spinning at
276 The number of pulses-per-rev of the fans can be set, Tach monitoring
H A Dpc87427.rst24 monitoring capabilities. It can monitor up to 18 voltages, 8 fans and
25 6 temperature sensors. Only the fans and temperatures are supported at
H A Dasus_wmi_sensors.rst70 fans stopping, fans getting stuck at max speed, or temperature readouts
H A Daquacomputer_d5next.rst31 virtual temperature sensors, as well as two flow sensors. The fans expose their
49 as well as eight PWM controllable fans, along with their speed (in RPM), power, voltage
53 sensor and four PWM controllable fans, along with their speed (in RPM), power,
H A Dit87.rst254 have support for 2 additional fans. The additional fans are supported by the
259 counters for fans 1 to 3. This is better (no more fan clock divider mess) but
271 IT8728F. It only supports 3 fans, 16-bit fan mode, and the full speed mode
275 to IT8728F. It only supports 16-bit fan mode. Both chips support up to 6 fans.
277 The IT8790E, IT8792E/IT8795E and IT87952E support up to 3 fans. 16-bit fan
325 (temperatures, voltages and fans.)
H A Dthmc50.rst86 so it stops fans even if the value 0 into the ANALOG_OUT register does not.
89 in the temp3 mode), five temperature readings and two fans.
H A Ducd9000.rst134 created only for enabled fans.
135 Note that even though UCD90910 supports up to 10 fans,
136 only up to four fans are currently supported.
H A Dw83781d.rst189 One user has reported problems with fans stopping
198 - One user reports fans stopping under high server load.
352 - 3 fans, identical to the W83781D
355 - 2 fans only, 1350000/RPM/div
441 One remarkable thing is that the fans would only have two or three
446 fans run at low speed, and 0x7F or 0x80 to make them run at full speed.
458 - seems to turn fans off after some time(1-2 minutes)... might be
465 - slightly "on-ner" than off, but my fans do not get to move. I can
H A Dasc7621.rst70 individual fans on each that would benefit from individual fan control.
74 fan types. We can also support pulse-stretched PWM so that 3-wire fans
103 The aSC7621 has tachometer inputs to measure fan speed on up to four fans.
121 - 3 PWM fan speed control outputs for 2-, 3- or 4-wire fans and up to 4 fan
H A Dftsteutates.rst22 8 fans. It also contains an integrated watchdog which is currently
H A Dsch5636.rst27 The Fujitsu Theseus can monitor up to 5 voltages, 8 fans and 16
H A Dadt7475.rst145 `pwm[1-*]_stall_disable sysfs attribute`. A value of 0 means the fans will shut
146 off. A value of 1 means the fans will run at auto_point1_pwm.
H A Dasus_rog_ryujin.rst19 Attaching external fans to the controller is optional and allows them to be
H A Dvt1211.rst51 temp2), 1 dedicated voltage (in5) and 2 fans. Additionally, the chip
59 tested very well (due to the fact that my EPIA M10000 doesn't have the fans
176 fans. Writing a 2 to any of the two pwm[1-2]_enable sysfs nodes will put the
H A Dnct6775.rst126 is lower than optimal. Some fans might not be present because they share pins
151 * 0 Fan control disabled (fans set to maximum speed)
254 critical temperature mode, in which the fans should run at full speed.
H A Duserspace-tools.rst8 voltages, fans speed). They are often connected through an I2C bus, but some
/linux/drivers/hwmon/
H A Dmacsmc-hwmon.c73 struct macsmc_hwmon_fan *fans; member
111 *str = hwmon->fan.fans[channel].label; in macsmc_hwmon_read_label()
277 &hwmon->fan.fans[chan].now, 1, val); in macsmc_hwmon_read_fan()
280 &hwmon->fan.fans[chan].min, 1, val); in macsmc_hwmon_read_fan()
283 &hwmon->fan.fans[chan].max, 1, val); in macsmc_hwmon_read_fan()
286 &hwmon->fan.fans[chan].set, 1, val); in macsmc_hwmon_read_fan()
299 if (!fan_control || hwmon->fan.fans[channel].mode.macsmc_key == 0) in macsmc_hwmon_write_fan()
305 ret = macsmc_hwmon_read_key(hwmon->smc, &hwmon->fan.fans[channel].min, in macsmc_hwmon_write_fan()
310 ret = macsmc_hwmon_read_key(hwmon->smc, &hwmon->fan.fans[channel].max, in macsmc_hwmon_write_fan()
316 if (!hwmon->fan.fans[channel].manual) { in macsmc_hwmon_write_fan()
[all …]
/linux/drivers/macintosh/
H A Dwindfarm_smu_controls.c259 struct device_node *smu, *fans, *fan; in smu_controls_init() local
269 for_each_child_of_node(smu, fans) in smu_controls_init()
270 if (of_node_name_eq(fans, "rpm-fans") || in smu_controls_init()
271 of_device_is_compatible(fans, "smu-rpm-fans")) in smu_controls_init()
273 for_each_child_of_node(fans, fan) { in smu_controls_init()
284 of_node_put(fans); in smu_controls_init()
288 for_each_child_of_node(smu, fans) in smu_controls_init()
289 if (of_node_name_eq(fans, "pwm-fans")) in smu_controls_init()
291 for_each_child_of_node(fans, fan) { in smu_controls_init()
302 of_node_put(fans); in smu_controls_init()
/linux/drivers/platform/x86/dell/
H A Ddell-wmi-ddv.c138 struct dell_wmi_ddv_sensors fans; member
324 &data->fans, sizeof(*entry)); in dell_wmi_ddv_fan_read_channel()
328 if (channel >= data->fans.entries) in dell_wmi_ddv_fan_read_channel()
331 entry = (struct fan_sensor_entry *)data->fans.obj->package.elements[1].buffer.pointer; in dell_wmi_ddv_fan_read_channel()
383 mutex_lock(&data->fans.lock); in dell_wmi_ddv_read()
385 mutex_unlock(&data->fans.lock); in dell_wmi_ddv_read()
407 &data->fans, sizeof(*entry)); in dell_wmi_ddv_fan_read_string()
411 if (channel >= data->fans.entries) in dell_wmi_ddv_fan_read_string()
414 entry = (struct fan_sensor_entry *)data->fans.obj->package.elements[1].buffer.pointer; in dell_wmi_ddv_fan_read_string()
498 mutex_lock(&data->fans.lock); in dell_wmi_ddv_read_string()
[all …]
/linux/drivers/sbus/char/
H A Dbbc_i2c.h65 struct list_head fans; member
/linux/Documentation/ABI/testing/
H A Ddebugfs-ec20 This can influence the way your machine is cooled and fans may
H A Dsysfs-driver-samsung-laptop9 their fans quiet at all costs. Reading from this file
/linux/Documentation/admin-guide/laptops/
H A Duniwill-laptop.rst36 two fans. Userspace applications can access sensor readings over the hwmon sysfs interface.

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