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/linux/Documentation/hwmon/
H A Dasus_rog_ryujin.rst1 .. SPDX-License-Identifier: GPL-2.0-or-later
13 -----------
16 all-in-one CPU liquid coolers. Available sensors are pump, internal and external
17 (controller) fan speed in RPM, their duties in PWM, as well as coolant temperature.
19 Attaching external fans to the controller is optional and allows them to be
20 controlled from the device. If not connected, the fan-related sensors will
21 report zeroes. The controller is a separate hardware unit that comes bundled
22 with the AIO and connects to it to allow fan control.
28 -----------
34 -------------
[all …]
H A Daquacomputer_d5next.rst1 .. SPDX-License-Identifier: GPL-2.0-or-later
3 Kernel driver aquacomputer-d5next
8 * Aquacomputer Aquaero 5/6 fan controllers
10 * Aquacomputer Farbwerk RGB controller
11 * Aquacomputer Farbwerk 360 RGB controller
12 * Aquacomputer Octo fan controller
13 * Aquacomputer Quadro fan controller
18 * Aquacomputer Poweradjust 3 fan controller
25 -----------
32 speed (in RPM), power, voltage and current. Temperature offsets and fan speeds
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H A Dnpcm750-pwm-fan.rst1 Kernel driver npcm750-pwm-fan
13 ------------
14 This driver implements support for NUVOTON NPCM7XX PWM and Fan Tacho
15 controller. The PWM controller supports up to 8 PWM outputs. The Fan tacho
16 controller supports up to 16 tachometer inputs.
21 fanX_input ro provide current fan rotation value in RPM as reported
22 by the fan to the device.
24 pwmX rw get or set PWM fan control value. This is an integer
H A Dmax6620.rst1 .. SPDX-License-Identifier: GPL-2.0-or-later
14 Datasheet: https://www.analog.com/media/en/technical-documentation/data-sheets/max6620.pdf
17 - L\. Grunenberg <contact@lgrunenberg.de>
18 - Cumulus Networks <support@cumulusnetworks.com>
19 - Shuotian Cheng <shuche@microsoft.com>
20 - Arun Saravanan Balachandran <Arun_Saravanan_Balac@dell.com>
23 -----------
25 This driver implements support for Maxim MAX6620 fan controller.
27 The driver configures the fan controller in RPM mode. To give the readings more
34 fan[1-4]_alarm ro Fan alarm.
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H A Daspeed-pwm-tacho.rst1 Kernel driver aspeed-pwm-tacho
11 ------------
12 This driver implements support for ASPEED AST2400/2500 PWM and Fan Tacho
13 controller. The PWM controller supports up to 8 PWM outputs. The Fan tacho
14 controller supports up to 16 tachometer inputs.
19 fanX_input ro provide current fan rotation value in RPM as reported
20 by the fan to the device.
22 pwmX rw get or set PWM fan control value. This is an integer
H A Dlan966x.rst1 .. SPDX-License-Identifier: GPL-2.0
3 Kernel driver lan966x-hwmon
10 Prefix: 'lan9668-hwmon'
12 Datasheet: https://microchip-ung.github.io/lan9668_reginfo
19 -----------
21 This driver implements support for the Microchip LAN9668 on-chip
22 temperature sensor as well as its fan controller. It provides one
23 temperature sensor and one fan controller. The temperature range
24 of the sensor is specified from -40 to +125 degrees Celsius and
25 its accuracy is +/- 5 degrees Celsius. The fan controller has a
[all …]
H A Demc2305.rst1 .. SPDX-License-Identifier: GPL-2.0
12 https://www.microchip.com/en-us/product/EMC2305
15 ------------
16 This driver implements support for Microchip EMC2301/2/3/5 RPM-based PWM Fan Controller.
17 The EMC2305 Fan Controller supports up to 5 independently controlled PWM fan drives.
18 Fan rotation speeds are reported in RPM.
19 The driver supports the RPM-based PWM control to keep a fan at the desired speed.
26 fan[1-5]_fault RO files for tachometers TACH1-TACH5 fault indication
27 fan[1-5]_input RO files for tachometers TACH1-TACH5 input (in RPM)
28 pwm[1-5] RW file for fan[1-5] target duty cycle (0..255)
H A Daspeed-g6-pwm-tach.rst1 .. SPDX-License-Identifier: GPL-2.0-or-later
3 Kernel driver aspeed-g6-pwm-tach
13 ------------
14 This driver implements support for ASPEED AST2600 Fan Tacho controller.
15 The controller supports up to 16 tachometer inputs.
20 fanX_input ro provide current fan rotation value in RPM as reported
21 by the fan to the device.
22 fanX_div rw Fan divisor: Supported value are power of 4 (1, 4, 16
25 affected by fan signal glitch.
H A Dg760a.rst6 * Global Mixed-mode Technology Inc. G760A
12 http://www.gmt.com.tw/product/datasheet/EDS-760A.pdf
17 -----------
19 The GMT G760A Fan Speed PWM Controller is connected directly to a fan
20 and performs closed-loop control of the fan speed.
22 The fan speed is programmed by setting the period via 'pwm1' of two
26 Setting a period of 0 stops the fan; setting the period to 255 sets
27 fan to maximum speed.
29 The measured fan rotation speed returned via 'fan1_input' is derived
31 source and a 2 pulse-per-revolution fan.
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H A Dg762.rst4 The GMT G762 Fan Speed PWM Controller is connected directly to a fan
5 and performs closed-loop or open-loop control of the fan speed. Two
6 modes - PWM or DC - are supported by the device.
9 http://natisbad.org/NAS/ref/GMT_EDS-762_763-080710-0.2.pdf. sysfs
10 bindings are described in Documentation/hwmon/sysfs-interface.rst.
19 fan revolution, ...); Those can be modified via devicetree bindings
25 set desired fan speed. This only makes sense in closed-loop
26 fan speed control (i.e. when pwm1_enable is set to 2).
29 provide current fan rotation value in RPM as reported by
30 the fan to the device.
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H A Dsl28cpld.rst1 .. SPDX-License-Identifier: GPL-2.0-only
17 -----------
19 The sl28cpld is a board management controller which also exposes a hardware
20 monitoring controller. At the moment this controller supports a single fan
24 The fan supervisor has a 7 bit counter register and a counter period of 1
30 -------------
35 fan1_input Fan RPM. Assuming 2 pulses per revolution.
/linux/drivers/gpu/drm/amd/pm/powerplay/hwmgr/
H A Dpptable_v1_0.h35 …AMETERS_NOFAN 0x80 /* No fan is connected to this controller. */
43 …* Thermal controller 'combo type' to use an external controller for Fan control and an internal co…
46 * The driver can pick the correct internal controller based on the ASIC.
49 …ALCONTROLLER_ADT7473_WITH_INTERNAL 0x89 /* ADT7473 Fan Control + Internal Thermal Controller …
50 …ALCONTROLLER_EMC2103_WITH_INTERNAL 0x8D /* EMC2103 Fan Control + Internal Thermal Controller …
245 ULONG ulDClk; /* UVD D-clock */
246 ULONG ulVClk; /* UVD V-clock */
281 UCHAR ucFanControlMode; /* Legacy or Fuzzy Fan mode */
282 USHORT usFanPWMMax; /* Maximum allowed fan power in percent */
283 USHORT usFanOutputSensitivity; /* Sensitivity of fan reaction to temepature changes */
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H A Dvega12_thermal.c38 return -EINVAL); in vega12_get_current_rpm()
47 fan_speed_info->supports_percent_read = false; in vega12_fan_ctrl_get_fan_speed_info()
48 fan_speed_info->supports_percent_write = false; in vega12_fan_ctrl_get_fan_speed_info()
49 fan_speed_info->supports_rpm_read = true; in vega12_fan_ctrl_get_fan_speed_info()
50 fan_speed_info->supports_rpm_write = true; in vega12_fan_ctrl_get_fan_speed_info()
63 * vega12_enable_fan_control_feature -Enables the SMC Fan Control Feature.
66 * Return: 0 on success. -1 otherwise.
71 struct vega12_hwmgr *data = (struct vega12_hwmgr *)(hwmgr->backend); in vega12_enable_fan_control_feature()
73 if (data->smu_features[GNLD_FAN_CONTROL].supported) { in vega12_enable_fan_control_feature()
76 data->smu_features[GNLD_FAN_CONTROL]. in vega12_enable_fan_control_feature()
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/linux/drivers/gpu/drm/amd/pm/legacy-dpm/
H A Dlegacy_dpm.c33 ((adev)->powerplay.pp_funcs->pre_set_power_state((adev)->powerplay.pp_handle))
36 ((adev)->powerplay.pp_funcs->post_set_power_state((adev)->powerplay.pp_handle))
39 ((adev)->powerplay.pp_funcs->display_configuration_changed((adev)->powerplay.pp_handle))
42 ((adev)->powerplay.pp_funcs->print_power_state((adev)->powerplay.pp_handle, (ps)))
45 ((adev)->powerplay.pp_funcs->vblank_too_short((adev)->powerplay.pp_handle))
48 …((adev)->powerplay.pp_funcs->check_state_equal((adev)->powerplay.pp_handle, (cps), (rps), (equal)))
105 rps == adev->pm.dpm.current_ps ? " c" : "", in amdgpu_dpm_dbg_print_ps_status()
106 rps == adev->pm.dpm.requested_ps ? " r" : "", in amdgpu_dpm_dbg_print_ps_status()
107 rps == adev->pm.dpm.boot_ps ? " b" : ""); in amdgpu_dpm_dbg_print_ps_status()
114 if (adev->powerplay.pp_funcs->print_power_state == NULL) in amdgpu_pm_print_power_states()
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/linux/Documentation/devicetree/bindings/hwmon/
H A Dhpe,gxp-fan-ctrl.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/hwmon/hpe,gxp-fan-ctrl.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: HPE GXP Fan Controller
10 - Nick Hawkins <nick.hawkins@hpe.com>
13 The HPE GXP fan controller controls the fans through an external CPLD
18 const: hpe,gxp-fan-ctrl
22 - description: Fan controller PWM
23 - description: Programmable logic
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H A Dadi,max31760.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Analog Devices MAX31760 Fan-Speed Controller
10 - Ibrahim Tilki <Ibrahim.Tilki@analog.com>
13 Analog Devices MAX31760 Fan-Speed Controller
19 - adi,max31760
27 - compatible
28 - reg
33 - |
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H A Dgmt,g762.yaml1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: GMT G761/G762/G763 PWM Fan controller
10 - Christian Marangi <ansuelsmth@gmail.com>
13 GMT G761/G762/G763 PWM Fan controller.
15 G761 supports an internal-clock hence the clocks property is optional.
16 If not defined, internal-clock will be used. (31KHz is the clock of
24 at http://natisbad.org/NAS/refs/GMT_EDS-762_763-080710-0.2.pdf.
29 - gmt,g761
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/linux/drivers/hwmon/
H A DKconfig1 # SPDX-License-Identifier: GPL-2.0-only
13 can include temperature sensors, voltage sensors, fan speed
20 sensors-detect script from the lm_sensors package. Read
21 <file:Documentation/hwmon/userspace-tools.rst> for details.
76 with SMpro co-processor.
264 the Aquacomputer D5 Next watercooling pump, Octo and Quadro fan
278 will be called as370-hwmon.
305 tristate "Analog Devices FAN Control HDL Core driver"
308 AXI HDL FAN monitoring core.
311 will be called axi-fan-control
[all …]
H A Dcgbc-hwmon.c1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * cgbc-hwmon - Congatec Board Controller hardware monitoring driver
81 "CPU Fan",
82 "Box Fan",
83 "Ambient Fan",
84 "Chipset Fan",
85 "Video Fan",
86 "Other Fan",
98 struct cgbc_device_data *cgbc = hwmon->cgbc; in cgbc_hwmon_probe_sensors()
99 struct cgbc_hwmon_sensor *sensor = hwmon->sensors; in cgbc_hwmon_probe_sensors()
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/linux/drivers/macintosh/
H A Dtherm_windtunnel.c3 * Time-stamp: <2004/03/20 14:20:59 samuel>
7 * The G4 "windtunnel" has a single fan controlled by an
8 * ADM1030 fan controller and a DS1775 thermostat.
10 * The fan controller is equipped with a temperature sensor
13 * behavior of the fan. It is based upon empirical observations
58 struct i2c_client *fan; member
60 int overheat_temp; /* 100% fan at this temp */
79 { 11, T(0,0), 11 }, /* min fan */
117 /* controller thread */
126 return -EINVAL; in write_reg()
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/linux/Documentation/wmi/devices/
H A Dmsi-wmi-platform.rst1 .. SPDX-License-Identifier: GPL-2.0-or-later
4 MSI WMI Platform Features driver (msi-wmi-platform)
10 Many MSI notebooks support various features like reading fan sensors. This features are controlled
11 by the embedded controller, with the ACPI firmware exposing a standard ACPI WMI interface on top
12 of the embedded controller interface.
24 guid("{ABBC0F60-8EA1-11d1-00A0-C90629100000}")]
31 guid("{ABBC0F63-8EA1-11d1-00A0-C90629100000}")]
38 guid("{ABBC0F6E-8EA1-11d1-00A0-C90629100000}")]
142 The ACPI control method responsible for handling the WMI method calls is not thread-safe.
146 -------------------
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/linux/arch/arm/boot/dts/aspeed/
H A Daspeed-bmc-inspur-nf5280m6.dts1 // SPDX-License-Identifier: GPL-2.0
3 /dts-v1/;
5 #include "aspeed-g5.dtsi"
6 #include <dt-bindings/gpio/aspeed-gpio.h>
7 #include <dt-bindings/i2c/i2c.h>
8 #include <dt-bindings/leds/leds-pca955x.h>
12 compatible = "inspur,nf5280m6-bmc", "aspeed,ast2500";
15 stdout-path = &uart5;
23 reserved-memory {
24 #address-cells = <1>;
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H A Daspeed-bmc-vegman-sx20.dts1 // SPDX-License-Identifier: GPL-2.0+
3 /dts-v1/;
5 #include "aspeed-bmc-vegman.dtsi"
9 compatible = "yadro,vegman-sx20-bmc", "aspeed,ast2500";
14 gpio-line-names =
15 …/*A0-A7*/ "CHASSIS_INTRUSION","CASE_OPEN_FAULT_RST","","","SPEAKER_BMC","FM_FORCE_BMC_UPDATE","","…
16 /*B0-B7*/ "","","","","","","","",
17 /*C0-C7*/ "","","","","","","","",
18 /*D0-D7*/ "","","","","","","","",
19 /*E0-E7*/ "RESET_BUTTON","RESET_OUT","POWER_BUTTON","POWER_OUT","","","","",
[all …]
/linux/drivers/pwm/
H A Dpwm-argon-fan-hat.c1 // SPDX-License-Identifier: GPL-2.0
6 * - no support for offset/polarity
7 * - fixed 30 kHz period
9 * Argon Fan HAT https://argon40.com/products/argon-fan-hat
28 if (wf->duty_length_ns > ARGON40_FAN_HAT_PERIOD_NS) in argon_fan_hat_round_waveform_tohw()
31 *wfhw = mul_u64_u64_div_u64(wf->duty_length_ns, 100, ARGON40_FAN_HAT_PERIOD_NS); in argon_fan_hat_round_waveform_tohw()
43 wf->period_length_ns = ARGON40_FAN_HAT_PERIOD_NS; in argon_fan_hat_round_waveform_fromhw()
44 wf->duty_length_ns = DIV64_U64_ROUND_UP(wf->period_length_ns * *wfhw, 100); in argon_fan_hat_round_waveform_fromhw()
45 wf->duty_offset_ns = 0; in argon_fan_hat_round_waveform_fromhw()
66 * The controller does not provide any way to read info back,
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/linux/Documentation/devicetree/bindings/pwm/
H A Dargon40,fan-hat.yaml1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/pwm/argon40,fan-hat.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Argon40 Fan HAT PWM controller
10 - Marek Vasut <marek.vasut+renesas@mailbox.org>
13 The trivial PWM on Argon40 Fan HAT, which is a RaspberryPi blower fan
15 PWM signal with configurable 0..100% duty cycle to control the fan
19 - $ref: pwm.yaml#
23 const: argon40,fan-hat
[all …]

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