| /linux/drivers/macintosh/ |
| H A D | windfarm_fcu_controls.c | 1 // SPDX-License-Identifier: GPL-2.0-only
3 * Windfarm PowerMac thermal control. FCU fan control
44 * what Darwin -apparently- does based on observed behaviour.
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()
96 nw = i2c_master_send(pv->i2c, buf, 1); in wf_fcu_read_reg()
97 if (nw > 0 || (nw < 0 && nw != -EIO) || tries >= 100) in wf_fcu_read_reg()
109 nr = i2c_master_recv(pv->i2c, buf, nb); in wf_fcu_read_reg()
[all …]
|
| H A D | windfarm_smu_controls.c | 1 // SPDX-License-Identifier: GPL-2.0-only
64 /* The SMU has an "old" and a "new" way of setting the fan speed in smu_set_fan()
78 return -EINVAL; in smu_set_fan()
100 printk(KERN_WARNING "windfarm: SMU failed new fan command " in smu_set_fan()
120 if (value < fct->min) in smu_fan_set()
121 value = fct->min; in smu_fan_set()
122 if (value > fct->max) in smu_fan_set()
123 value = fct->max; in smu_fan_set()
124 fct->value = value; in smu_fan_set()
126 return smu_set_fan(fct->fan_type, fct->reg, value); in smu_fan_set()
[all …]
|
| /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()
44 target = fan->percent; in nvkm_fan_update()
45 target = max_t(u8, target, fan->bios.min_duty); in nvkm_fan_update()
46 target = min_t(u8, target, fan->bios.max_duty); in nvkm_fan_update()
[all …]
|
| H A D | fantog.c | 39 nvkm_fantog_update(struct nvkm_fantog *fan, int percent) in nvkm_fantog_update() argument
41 struct nvkm_therm *therm = fan->base.parent; in nvkm_fantog_update()
42 struct nvkm_device *device = therm->subdev.device; in nvkm_fantog_update()
43 struct nvkm_timer *tmr = device->timer; in nvkm_fantog_update()
44 struct nvkm_gpio *gpio = device->gpio; in nvkm_fantog_update()
48 spin_lock_irqsave(&fan->lock, flags); in nvkm_fantog_update()
50 percent = fan->percent; in nvkm_fantog_update()
51 fan->percent = percent; in nvkm_fantog_update()
57 u64 next_change = (percent * fan->period_us) / 100; in nvkm_fantog_update()
59 next_change = fan->period_us - next_change; in nvkm_fantog_update()
[all …]
|
| H A D | fanpwm.c | 29 #include <subdev/bios/fan.h>
40 struct nvkm_fanpwm *fan = (void *)therm->fan; in nvkm_fanpwm_get() local
41 struct nvkm_device *device = therm->subdev.device; in nvkm_fanpwm_get()
42 struct nvkm_gpio *gpio = device->gpio; in nvkm_fanpwm_get()
43 int card_type = device->card_type; in nvkm_fanpwm_get()
47 ret = therm->func->pwm_get(therm, fan->func.line, &divs, &duty); in nvkm_fanpwm_get()
50 if (card_type <= NV_40 || (fan->func.log[0] & 1)) in nvkm_fanpwm_get()
51 duty = divs - duty; in nvkm_fanpwm_get()
55 return nvkm_gpio_get(gpio, 0, fan->func.func, fan->func.line) * 100; in nvkm_fanpwm_get()
61 struct nvkm_fanpwm *fan = (void *)therm->fan; in nvkm_fanpwm_set() local
[all …]
|
| /linux/drivers/platform/x86/ |
| H A D | gpd-pocket-fan.c | 1 // SPDX-License-Identifier: GPL-2.0+
3 * GPD Pocket fan controller driver
9 #include <linux/devm-helpers.h>
33 "Millicelsius values above which the fan speed increases");
38 "Hysteresis in millicelsius before lowering the fan speed");
43 "minimum fan speed to allow when system is powered by AC");
55 static void gpd_pocket_fan_set_speed(struct gpd_pocket_fan_data *fan, int speed) in gpd_pocket_fan_set_speed() argument
57 if (speed == fan->last_speed) in gpd_pocket_fan_set_speed()
60 gpiod_direction_output(fan->gpio0, !!(speed & 1)); in gpd_pocket_fan_set_speed()
61 gpiod_direction_output(fan->gpio1, !!(speed & 2)); in gpd_pocket_fan_set_speed()
[all …]
|
| /linux/drivers/acpi/ |
| H A D | fan_core.c | 1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * fan_core.c - ACPI Fan core Driver
20 #include "fan.h"
32 struct acpi_device *device = cdev->devdata; in fan_get_max_state()
33 struct acpi_fan *fan = acpi_driver_data(device); in fan_get_max_state() local
35 if (fan->acpi4) { in fan_get_max_state()
36 if (fan->fif.fine_grain_ctrl) in fan_get_max_state()
37 *state = 100 / fan->fif.step_size; in fan_get_max_state()
39 *state = fan->fps_count - 1; in fan_get_max_state()
54 status = acpi_evaluate_object(device->handle, "_FST", NULL, &buffer); in acpi_fan_get_fst()
[all …]
|
| H A D | fan_attr.c | 1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * fan_attr.c - Create extra attributes for ACPI Fan driver
15 #include "fan.h"
24 if (fps->control == 0xFFFFFFFF || fps->control > 100) in show_state()
25 count = sysfs_emit(buf, "not-defined:"); in show_state()
27 count = sysfs_emit(buf, "%lld:", fps->control); in show_state()
29 if (fps->trip_point == 0xFFFFFFFF || fps->trip_point > 9) in show_state()
30 count += sysfs_emit_at(buf, count, "not-defined:"); in show_state()
32 count += sysfs_emit_at(buf, count, "%lld:", fps->trip_point); in show_state()
34 if (fps->speed == 0xFFFFFFFF) in show_state()
[all …]
|
| H A D | fan.h | 1 /* SPDX-License-Identifier: GPL-2.0-only */
4 * ACPI fan device IDs are shared between the fan driver and the device power
7 * Add new device IDs before the generic ACPI fan one.
16 {"INT3404", }, /* Fan */ \
17 {"INTC1044", }, /* Fan for Tiger Lake generation */ \
18 {"INTC1048", }, /* Fan for Alder Lake generation */ \
19 {"INTC1063", }, /* Fan for Meteor Lake generation */ \
20 {"INTC106A", }, /* Fan for Lunar Lake generation */ \
21 {"INTC10A2", }, /* Fan for Raptor Lake generation */ \
22 {"INTC10D6", }, /* Fan for Panther Lake generation */ \
[all …]
|
| /linux/Documentation/devicetree/bindings/hwmon/ |
| H A D | npcm750-pwm-fan.txt | 1 Nuvoton NPCM PWM and Fan Tacho controller device
3 The Nuvoton BMC NPCM7XX supports 8 Pulse-width modulation (PWM)
4 controller outputs and 16 Fan tachometer controller inputs.
6 The Nuvoton BMC NPCM8XX supports 12 Pulse-width modulation (PWM)
7 controller outputs and 16 Fan tachometer controller inputs.
9 Required properties for pwm-fan node
10 - #address-cells : should be 1.
11 - #size-cells : should be 0.
12 - compatible : "nuvoton,npcm750-pwm-fan" for Poleg NPCM7XX.
13 : "nuvoton,npcm845-pwm-fan" for Arbel NPCM8XX.
[all …]
|
| H A D | aspeed-pwm-tacho.txt | 1 ASPEED AST2400/AST2500 PWM and Fan Tacho controller device driver
3 The ASPEED PWM controller can support upto 8 PWM outputs. The ASPEED Fan Tacho
4 controller can support upto 16 Fan tachometer inputs.
6 There can be upto 8 fans supported. Each fan can have one PWM output and
7 one/two Fan tach inputs.
9 Required properties for pwm-tacho node:
10 - #address-cells : should be 1.
12 - #size-cells : should be 1.
14 - #cooling-cells: should be 2.
16 - reg : address and length of the register set for the device.
[all …]
|
| 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:
[all …]
|
| /linux/drivers/hwmon/ |
| H A D | mlxreg-fan.c | 1 // SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause)
27 * FAN datasheet defines the formula for RPM calculations as RPM = 15/t-high.
28 * The logic in a programmable device measures the time t-high by sampling the
29 * tachometer every t-sample (with the default value 11.32 uS) and increment
31 * RPM = 15 / (t-sample * (K + Regval)), where:
33 * - 0xff - represents tachometer fault;
34 * - 0xfe - represents tachometer minimum value , which is 4444 RPM;
35 * - 0x00 - represents tachometer maximum value , which is 300000 RPM;
39 * used: RPM = 15 / ((Regval + K) * 11.32) * 10^(-6)), which in the
42 * - for Regval 0x00, RPM will be 15000000 * 100 / (44 * 1132) = 30115;
[all …]
|
| H A D | npcm750-pwm-fan.c | 1 // SPDX-License-Identifier: GPL-2.0
2 // Copyright (c) 2014-2018 Nuvoton Technology corporation.
7 #include <linux/hwmon-sysfs.h>
79 /* NPCM7XX FAN Tacho registers */
140 /* FAN General Definition */
141 /* Define the maximum FAN channel number */
147 * Get Fan Tach Timeout (base on clock 214843.75Hz, 1 cnt = 4.654us)
149 * (The minimum FAN speed could to support ~640RPM/pulse 1,
150 * 320RPM/pulse 2, ...-- 10.6Hz)
154 #define NPCM7XX_FAN_TCPA (NPCM7XX_FAN_TCNT - NPCM7XX_FAN_TIMEOUT)
[all …]
|
| /linux/Documentation/hwmon/ |
| 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.
[all …]
|
| H A D | nct6775.rst | 19 * Nuvoton NCT5572D/NCT6771F/NCT6772F/NCT6775F/W83677HG-I
83 * Nuvoton NCT6796D-S/NCT6799D-R
93 Guenter Roeck <linux@roeck-us.net>
96 -----------
106 There are 4 to 5 fan rotation speed sensors, 8 to 15 analog voltage sensors,
108 fan regulation strategies (plus manual fan control mode).
119 Fan rotation speeds are reported in RPM (rotations per minute). An alarm is
121 NCT6775F, fan readings can be divided by a programmable divider (1, 2, 4, 8,
123 do not have a fan speed divider. The driver sets the most suitable fan divisor
124 itself; specifically, it increases the divider value each time a fan speed
[all …]
|
| H A D | w83792d.rst | 10 Addresses scanned: I2C 0x2c - 0x2f
19 -----------------
35 -----------
42 parameter; this will put it into a more well-behaved state first.
44 The driver implements three temperature sensors, seven fan rotation speed
45 sensors, nine voltage sensors, and two automatic fan regulation
46 strategies called: Smart Fan I (Thermal Cruise mode) and Smart Fan II.
48 The driver also implements up to seven fan control outputs: pwm1-7. Pwm1-7
53 Automatic fan control mode is possible only for fan1-fan3.
55 For all pwmX outputs, a value of 0 means minimum fan speed and a value of
[all …]
|
| H A D | adm9240.rst | 10 Addresses scanned: I2C 0x2c - 0x2f
20 Addresses scanned: I2C 0x2c - 0x2f
24 http://pdfserv.maxim-ic.com/en/ds/DS1780.pdf
30 Addresses scanned: I2C 0x2c - 0x2f
37 - Frodo Looijaard <frodol@dds.nl>,
38 - Philip Edelbrock <phil@netroedge.com>,
39 - Michiel Rook <michiel@grendelproject.nl>,
40 - Grant Coady <gcoady.lk@gmail.com> with guidance
44 ---------
46 chip MSB 5-bit address. Each chip reports a unique manufacturer
[all …]
|
| 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 ----------------
[all …]
|
| H A D | w83627ehf.rst | 22 * Winbond W83627DHG-P
46 * Winbond W83667HG-B
54 * Nuvoton NCT6775F/W83667HG-I
73 - Jean Delvare <jdelvare@suse.de>
74 - Yuan Mu (Winbond)
75 - Rudolf Marek <r.marek@assembler.cz>
76 - David Hubbard <david.c.hubbard@gmail.com>
77 - Gong Jun <JGong@nuvoton.com>
80 -----------
83 W83627DHG, W83627DHG-P, W83627UHG, W83667HG, W83667HG-B, W83667HG-I
[all …]
|
| 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
[all …]
|
| /linux/arch/arm/boot/dts/aspeed/ |
| H A D | aspeed-bmc-amd-daytonax.dts | 1 // SPDX-License-Identifier: GPL-2.0
2 /dts-v1/;
4 #include "aspeed-g5.dtsi"
5 #include <dt-bindings/gpio/aspeed-gpio.h>
6 #include <dt-bindings/interrupt-controller/irq.h>
10 compatible = "amd,daytonax-bmc", "aspeed,ast2500";
16 reserved-memory {
17 #address-cells = <1>;
18 #size-cells = <1>;
24 compatible = "shared-dma-pool";
[all …]
|
| /linux/drivers/gpu/drm/nouveau/nvkm/subdev/bios/ |
| H A D | fan.c | 26 #include <subdev/bios/fan.h>
32 u32 fan = 0; in nvbios_fan_table() local
36 fan = nvbios_rd32(bios, bit_P.offset + 0x58); in nvbios_fan_table()
38 if (fan) { in nvbios_fan_table()
39 *ver = nvbios_rd08(bios, fan + 0); in nvbios_fan_table()
42 *hdr = nvbios_rd08(bios, fan + 1); in nvbios_fan_table()
43 *len = nvbios_rd08(bios, fan + 2); in nvbios_fan_table()
44 *cnt = nvbios_rd08(bios, fan + 3); in nvbios_fan_table()
45 return fan; in nvbios_fan_table()
66 nvbios_fan_parse(struct nvkm_bios *bios, struct nvbios_therm_fan *fan) in nvbios_fan_parse() argument
[all …]
|
| H A D | therm.c | 40 nvkm_error(&bios->subdev, in therm_table()
77 return -EINVAL; in nvbios_therm_sensor_parse()
81 sensor_section = -1; in nvbios_therm_sensor_parse()
96 sensor->offset_constant = offset; in nvbios_therm_sensor_parse()
102 sensor->thrs_critical.temp = (value & 0xff0) >> 4; in nvbios_therm_sensor_parse()
103 sensor->thrs_critical.hysteresis = value & 0xf; in nvbios_therm_sensor_parse()
109 sensor->thrs_down_clock.temp = (value & 0xff0) >> 4; in nvbios_therm_sensor_parse()
110 sensor->thrs_down_clock.hysteresis = value & 0xf; in nvbios_therm_sensor_parse()
116 sensor->thrs_fan_boost.temp = (value & 0xff0) >> 4; in nvbios_therm_sensor_parse()
117 sensor->thrs_fan_boost.hysteresis = value & 0xf; in nvbios_therm_sensor_parse()
[all …]
|
| /linux/Documentation/admin-guide/acpi/ |
| H A D | fan_performance_states.rst | 1 .. SPDX-License-Identifier: GPL-2.0
4 ACPI Fan Performance States
8 fan (for example, PNP0C0B or INT3404), the ACPI fan driver creates additional
10 These attributes list properties of fan performance states.
19 $ ls -l /sys/bus/acpi/devices/INT3404:00/
22 -r--r--r-- 1 root root 4096 Dec 13 20:38 state0
23 -r--r--r-- 1 root root 4096 Dec 13 20:38 state1
24 -r--r--r-- 1 root root 4096 Dec 13 20:38 state10
25 -r--r--r-- 1 root root 4096 Dec 13 20:38 state11
26 -r--r--r-- 1 root root 4096 Dec 13 20:38 state2
[all …]
|