| /linux/Documentation/hwmon/ |
| H A D | aquacomputer_d5next.rst | 1 .. SPDX-License-Identifier: GPL-2.0-or-later
3 Kernel driver aquacomputer-d5next
8 * Aquacomputer Aquaero 5/6 fan controllers
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
35 For the D5 Next pump, available sensors are pump and fan speed, power, voltage
37 available through debugfs are the serial number, firmware version and power-on
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| H A D | g762.rst | 4 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 D | max31790.rst | 10 Addresses scanned: -
18 -----------
23 PWM outputs. The desired fan speeds (or PWM duty cycles) are written
24 through the I2C interface. The outputs drive "4-wire" fans directly,
25 or can be used to modulate the fan's power terminals using an external
28 Tachometer inputs monitor fan tachometer logic outputs for precise (+/-1%)
29 monitoring and control of fan RPM as well as detection of fan failure.
35 -------------
38 fan[1-12]_input RO fan tachometer speed in RPM
39 fan[1-12]_fault RO fan experienced fault
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| H A D | emc2103.rst | 18 -----------
21 contain up to 4 temperature sensors and a single fan controller.
23 Fan rotation speeds are reported in RPM (rotations per minute). An alarm is
24 triggered if the rotation speed has dropped below a programmable limit. Fan
26 the readings more range or accuracy. Not all RPM values can accurately be
28 representable value is 480 RPM.
30 This driver supports RPM based control, to use this a fan target
33 The 2103-2 and 2103-4 variants have a third temperature sensor, which can
34 be connected to two anti-parallel diodes. These values can be read
37 this 4th channel when anti-parallel diodes are not fitted.
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| H A D | emc2305.rst | 1 .. 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)
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| H A D | max31785.rst | 10 Addresses scanned: -
17 -----------
19 The Maxim MAX31785 is a PMBus device providing closed-loop, multi-channel fan
20 management with temperature and remote voltage sensing. Various fan control
22 dual tachometer measurements, and fan health monitoring.
24 For dual-rotor configurations the MAX31785A exposes the second rotor tachometer
25 readings in attributes fan[5-8]_input. By contrast the MAX31785 only exposes
26 the slowest rotor measurement, and does so in the fan[1-4]_input attributes.
29 -----------
35 ----------------
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| H A D | max6639.rst | 12 Datasheet: https://datasheets.maximintegrated.com/en/ds/MAX6639-MAX6639F.pdf
15 - He Changqing <hechangqing@semptian.com>
16 - Roland Stigge <stigge@antcom.de>
19 -----------
21 This driver implements support for the Maxim MAX6639. This chip is a 2-channel
22 temperature monitor with dual PWM fan speed controller. It can monitor its own
23 temperature and one external diode-connected transistor or two external
24 diode-connected transistors.
43 pwm1 RW Fan 1 target duty cycle (0..255)
44 pwm2 RW Fan 2 target duty cycle (0..255)
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| H A D | corsair-cpro.rst | 1 .. SPDX-License-Identifier: GPL-2.0-or-later
3 Kernel driver corsair-cpro
14 -----------
17 The Corsair Commander Pro is a USB device with 6 fan connectors,
22 -----------
27 -------------
33 temp[1-4]_input Temperature on connected temperature sensors
34 fan[1-6]_input Connected fan rpm.
35 fan[1-6]_label Shows fan type as detected by the device.
36 fan[1-6]_target Sets fan speed target rpm.
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| H A D | amc6821.rst | 19 -----------
22 The chip has one on-chip and one remote temperature sensor and one pwm fan
29 temp1_input ro on-chip temperature
51 fan1_target rw Target fan speed, to be used with pwm1_enable
55 pwm1_enable rw regulator mode, 1=open loop, 2=fan controlled
56 by remote temperature, 3=fan controlled by
57 combination of the on-chip temperature and
58 remote-sensor temperature,
59 4=fan controlled by target rpm set with
61 pwm1_mode rw Fan duty control mode (0=DC, 1=PWM)
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| /linux/Documentation/devicetree/bindings/hwmon/ |
| H A D | fan-common.yaml | 1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
3 ---
4 $id: http://devicetree.org/schemas/hwmon/fan-common.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Common Fan Properties
10 - Naresh Solanki <naresh.solanki@9elements.com>
11 - Billy Tsai <billy_tsai@aspeedtech.com>
14 max-rpm:
16 Max RPM supported by fan.
20 min-rpm:
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| /linux/drivers/macintosh/ |
| H A D | windfarm_pm81.c | 1 // SPDX-License-Identifier: GPL-2.0-only
11 * that none of the code has been re-used, it's a complete re-implementation
24 * - the linked control (second control) gets the target value as-is
25 * (typically the drive fan)
26 * - the main control (first control) gets the target value scaled with
28 * - the value of the target of the CPU Fan control loop is retrieved,
30 * the scaled target is applied to the main control.
33 * controls : system-fan, drive-bay-fan
34 * sensors : hd-temp
39 * Input target = 0x3a0000
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| H A D | windfarm_pm72.c | 1 // SPDX-License-Identifier: GPL-2.0-only
65 /* Fixed speed for slot fan */
99 #define LOW_OVER_CLEAR ((-10) << 16)
167 cpu_thist_total -= t_old; in cpu_check_overtemp()
193 /* High overtemp -> immediate shutdown */ in cpu_check_overtemp()
217 return -EIO; in read_one_cpu_vals()
226 return -EIO; in read_one_cpu_vals()
234 return -EIO; in read_one_cpu_vals()
262 wf_control_get(cpu_rear_fans[cpu], &sp->target); in cpu_fans_tick_split()
264 DBG_LOTS(" CPU%d: cur_target = %d RPM\n", cpu, sp->target); in cpu_fans_tick_split()
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| H A D | windfarm_pm121.c | 1 // SPDX-License-Identifier: GPL-2.0-only
16 * that none of the code has been re-used, it's a complete
17 * re-implementation
21 * controls with a tiny difference. The control-ids of hard-drive-fan
22 * and cpu-fan is swapped.
24 * Target Correction :
26 * controls have a target correction calculated as :
31 * OD Fan control correction.
34 * offset : -19563152
38 * offset : -15650652
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| H A D | windfarm_fcu_controls.c | 1 // SPDX-License-Identifier: GPL-2.0-only
3 * Windfarm PowerMac thermal control. FCU fan control
36 * correction factor obtained from the PID to the actual RPM
40 * applied to the setpoint RPM speed, that is basically the
44 * what Darwin -apparently- does based on observed behaviour.
66 s32 min, max, target; member
80 struct wf_fcu_fan *fan = ct->priv; in wf_fcu_fan_release() local
82 kref_put(&fan->fcu_priv->ref, wf_fcu_release); in wf_fcu_fan_release()
83 kfree(fan); in wf_fcu_fan_release()
91 mutex_lock(&pv->lock); in wf_fcu_read_reg()
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| H A D | windfarm_mpu.h | 1 /* SPDX-License-Identifier: GPL-2.0-only */
22 u8 signature; /* 0x00 - EEPROM sig. */
23 u8 bytes_used; /* 0x01 - Bytes used in eeprom (160 ?) */
24 u8 size; /* 0x02 - EEPROM size (256 ?) */
25 u8 version; /* 0x03 - EEPROM version */
26 u32 data_revision; /* 0x04 - Dataset revision */
27 u8 processor_bin_code[3]; /* 0x08 - Processor BIN code */
28 u8 bin_code_expansion; /* 0x0b - ??? (padding ?) */
29 u8 processor_num; /* 0x0c - Number of CPUs on this MPU */
30 u8 input_mul_bus_div; /* 0x0d - Clock input multiplier/bus divider */
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| /linux/drivers/gpu/drm/amd/pm/powerplay/hwmgr/ |
| H A D | pptable_v1_0.h | 35 #define ATOM_TONGA_PP_FANPARAMETERS_NOFAN 0x80 /* No fan is conn…
43 …* Thermal controller 'combo type' to use an external controller for Fan control and an internal co…
49 #define ATOM_TONGA_PP_THERMALCONTROLLER_ADT7473_WITH_INTERNAL 0x89 /* ADT7473 Fan Control + In…
50 #define ATOM_TONGA_PP_THERMALCONTROLLER_EMC2103_WITH_INTERNAL 0x8D /* EMC2103 Fan Control + In…
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 */
284 USHORT usFanRPMMax; /* The default value in RPM */
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| /linux/drivers/gpu/drm/nouveau/nvkm/subdev/therm/ |
| H A D | fan.c | 27 #include <subdev/bios/fan.h>
32 nvkm_fan_update(struct nvkm_fan *fan, bool immediate, int target) in nvkm_fan_update() argument
34 struct nvkm_therm *therm = fan->parent; in nvkm_fan_update()
35 struct nvkm_subdev *subdev = &therm->subdev; in nvkm_fan_update()
36 struct nvkm_timer *tmr = subdev->device->timer; in nvkm_fan_update()
41 /* update target fan speed, restricting to allowed range */ in nvkm_fan_update()
42 spin_lock_irqsave(&fan->lock, flags); in nvkm_fan_update()
43 if (target < 0) in nvkm_fan_update()
44 target = fan->percent; in nvkm_fan_update()
45 target = max_t(u8, target, fan->bios.min_duty); in nvkm_fan_update()
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| /linux/drivers/hwmon/ |
| H A D | max6620.c | 1 // SPDX-License-Identifier: GPL-2.0-or-later
20 * http://pdfserv.maxim-ic.com/en/ds/MAX6620.pdf
95 /* Minimum and maximum values of the FAN-RPM */
142 u16 target[4]; member
150 static u16 max6620_fan_rpm_to_tach(u8 div, int rpm) in max6620_fan_rpm_to_tach() argument
152 return (60 * div * MAX6620_CLOCK_FREQ) / (rpm * MAX6620_PULSE_PER_REV); in max6620_fan_rpm_to_tach()
163 struct i2c_client *client = data->client; in max6620_update_device()
167 mutex_lock(&data->update_lock); in max6620_update_device()
169 if (time_after(jiffies, data->last_updated + HZ) || !data->valid) { in max6620_update_device()
174 data->fancfg[i] = ret; in max6620_update_device()
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| H A D | max6650.c | 1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * max6650.c - Part of lm_sensors, Linux kernel modules for hardware
18 * http://pdfserv.maxim-ic.com/en/ds/MAX6650-MAX6651.pdf
27 #include <linux/hwmon-sysfs.h>
36 /* fan_voltage: 5=5V fan, 12=12V fan, 0=don't change */
91 /* Minimum and maximum values of the FAN-RPM */
143 * Useful range for dac is 0-180 for 12V fans and 0-76 for 5V fans. in dac_to_pwm()
146 return clamp_val(255 - (255 * dac) / DAC_LIMIT(v12), 0, 255); in dac_to_pwm()
153 return limit - (limit * pwm) / 255; in pwm_to_dac()
159 struct i2c_client *client = data->client; in max6650_update_device()
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| H A D | corsair-cpro.c | 1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * corsair-cpro.c - Linux driver for Corsair Commander Pro
33 #define CTL_GET_FW_VER 0x02 /* returns the firmware version in bytes 1-3 */
34 #define CTL_GET_BL_VER 0x06 /* returns the bootloader version in bytes 1-2 */
36 * returns in bytes 1-4 for each temp sensor:
42 * rcv: returns temp for channel in centi-degree celsius
52 * returns in bytes 1-6 for each fan:
59 * rcv: returns rpm in bytes 1,2
64 * returns error 0x12 if fan is controlled via
65 * fan_target or fan curve
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| /linux/drivers/gpu/drm/amd/pm/inc/ |
| H A D | smu_v13_0_0_pptable.h | 37 // SMU_13_0_0_PP_THERMALCONTROLLER - Thermal Controller Type
68 …FAN_ACOUSTIC_LIMIT = 1 << SMU_13_0_0_ODCAP_FAN_ACOUSTIC_LIMIT, //Fan Acoustic RPM feature
69 …AN_SPEED_MIN = 1 << SMU_13_0_0_ODCAP_FAN_SPEED_MIN, //Minimum Fan Speed feature
70 …ERATURE_FAN = 1 << SMU_13_0_0_ODCAP_TEMPERATURE_FAN, //Fan Target Temperature Limi…
73 …FEATURE_FAN_ZERO_RPM_CONTROL = 1 << SMU_13_0_0_ODCAP_FAN_ZERO_RPM_CONTROL, //Zero RPM feature
77 …EATURE_FAN_CURVE = 1 << SMU_13_0_0_ODCAP_FAN_CURVE, //Fan Curve feature
78 …FAN_ACOUSTIC_LIMIT = 1 << SMU_13_0_0_ODCAP_AUTO_FAN_ACOUSTIC_LIMIT, //Auto Fan Acoustic RPM feature
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| /linux/drivers/gpu/drm/amd/pm/swsmu/inc/ |
| H A D | smu_v13_0_7_pptable.h | 37 // SMU_13_0_7_PP_THERMALCONTROLLER - Thermal Controller Type
68 …FAN_ACOUSTIC_LIMIT = 1 << SMU_13_0_7_ODCAP_FAN_ACOUSTIC_LIMIT, //Fan Acoustic RPM feature
69 …AN_SPEED_MIN = 1 << SMU_13_0_7_ODCAP_FAN_SPEED_MIN, //Minimum Fan Speed feature
70 …ERATURE_FAN = 1 << SMU_13_0_7_ODCAP_TEMPERATURE_FAN, //Fan Target Temperature Limi…
73 …FEATURE_FAN_ZERO_RPM_CONTROL = 1 << SMU_13_0_7_ODCAP_FAN_ZERO_RPM_CONTROL, //Zero RPM feature
77 …EATURE_FAN_CURVE = 1 << SMU_13_0_7_ODCAP_FAN_CURVE, //Fan Curve feature
78 …FAN_ACOUSTIC_LIMIT = 1 << SMU_13_0_7_ODCAP_AUTO_FAN_ACOUSTIC_LIMIT, //Auto Fan Acoustic RPM feature
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| H A D | smu_v11_0_7_pptable.h | 37 // SMU_11_0_7_PP_THERMALCONTROLLER - Thermal Controller Type
69 …_FAN_ACOUSTIC_LIMIT = 1 << SMU_11_0_7_ODCAP_FAN_ACOUSTIC_LIMIT, //Fan Acoustic RPM feature
70 …FAN_SPEED_MIN = 1 << SMU_11_0_7_ODCAP_FAN_SPEED_MIN, //Minimum Fan Speed feature
71 …PERATURE_FAN = 1 << SMU_11_0_7_ODCAP_TEMPERATURE_FAN, //Fan Target Temperature Limi…
74 …DFEATURE_FAN_ZERO_RPM_CONTROL = 1 << SMU_11_0_7_ODCAP_FAN_ZERO_RPM_CONTROL, //Zero RPM feature
78 …FEATURE_FAN_CURVE = 1 << SMU_11_0_7_ODCAP_FAN_CURVE, //Fan Curve feature
79 …_FAN_ACOUSTIC_LIMIT = 1 << SMU_11_0_ODCAP_AUTO_FAN_ACOUSTIC_LIMIT, //Auto Fan Acoustic RPM feature
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| H A D | smu_v11_0_pptable.h | 37 // SMU_11_0_PP_THERMALCONTROLLER - Thermal Controller Type
66 …URE_FAN_ACOUSTIC_LIMIT = 1 << SMU_11_0_ODCAP_FAN_ACOUSTIC_LIMIT, //Fan Acoustic RPM feature
67 …RE_FAN_SPEED_MIN = 1 << SMU_11_0_ODCAP_FAN_SPEED_MIN, //Minimum Fan Speed feature
68 …TEMPERATURE_FAN = 1 << SMU_11_0_ODCAP_TEMPERATURE_FAN, //Fan Target Temperature Limi…
71 …0_ODFEATURE_FAN_ZERO_RPM_CONTROL = 1 << SMU_11_0_ODCAP_FAN_ZERO_RPM_CONTROL, //Zero RPM feature
75 …SMU_11_0_ODFEATURE_FAN_CURVE = 1 << SMU_11_0_ODCAP_FAN_CURVE, //Fan Curv…
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| H A D | smu_v13_0_pptable.h | 37 // SMU_13_0_PP_THERMALCONTROLLER - Thermal Controller Type
66 …URE_FAN_ACOUSTIC_LIMIT = 1 << SMU_13_0_ODCAP_FAN_ACOUSTIC_LIMIT, //Fan Acoustic RPM feature
67 …RE_FAN_SPEED_MIN = 1 << SMU_13_0_ODCAP_FAN_SPEED_MIN, //Minimum Fan Speed feature
68 …TEMPERATURE_FAN = 1 << SMU_13_0_ODCAP_TEMPERATURE_FAN, //Fan Target Temperature Limi…
71 …SMU_13_0_ODFEATURE_FAN_ZERO_RPM_CONTROL = 1 << SMU_13_0_ODCAP_FAN_ZERO_RPM_CONTROL, //Zero RPM…
75 …SMU_13_0_ODFEATURE_FAN_CURVE = 1 << SMU_13_0_ODCAP_FAN_CURVE, //Fan Curv…
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