| /kernel/linux/linux-5.10/Documentation/devicetree/bindings/hwmon/ |
| D | adi,axi-fan-control.yaml | 1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
4 ---
5 $id: http://devicetree.org/schemas/hwmon/adi,axi-fan-control.yaml#
6 $schema: http://devicetree.org/meta-schemas/core.yaml#
11 - Nuno Sá <nuno.sa@analog.com>
22 - adi,axi-fan-control-1.00.a
33 pulses-per-revolution:
35 Value specifying the number of pulses per revolution of the controlled
41 - compatible
42 - reg
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| D | pwm-fan.txt | 4 - compatible : "pwm-fan"
5 - pwms : the PWM that is used to control the PWM fan
6 - cooling-levels : PWM duty cycle values in a range from 0 to 255
10 - fan-supply : phandle to the regulator that provides power to the fan
11 - interrupts : This contains a single interrupt specifier which
14 defined number of interrupts per fan revolution, which
16 See interrupt-controller/interrupts.txt for the format.
17 - pulses-per-revolution : define the tachometer pulses per fan revolution as
18 an integer (default is 2 interrupts per revolution).
22 fan0: pwm-fan {
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| /kernel/linux/linux-4.19/Documentation/hwmon/ |
| D | g762 | 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.
18 hardware characteristics of the system (reference clock, pulses per
19 fan revolution, ...); Those can be modified via devicetree bindings
24 fan1_target: set desired fan speed. This only makes sense in closed-loop
32 fan1_pulses: number of pulses per fan revolution. Supported values
38 fan1_alarm: in closed-loop control mode, if fan RPM value is 25% out
43 speed control (open-loop) via pwm1 described below, 2 for
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| D | g760a | 5 * Global Mixed-mode Technology Inc. G760A
8 http://www.gmt.com.tw/product/datasheet/EDS-760A.pdf
13 -----------
16 and performs closed-loop control of the fan speed.
19 consecutive speed pulses. The period is defined in terms of clock
27 source and a 2 pulse-per-revolution fan.
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| D | dme1737 | 11 Addresses scanned: none, address read from Super-I/O config space
19 Addresses scanned: none, address read from Super-I/O config space
27 -----------------
33 * probe_all_addr: bool Include non-standard LPC addresses 0x162e and 0x164e
36 - VIA EPIA SN18000
40 -----------
44 and SCH5127 Super-I/O chips. These chips feature monitoring of 3 temp sensors
45 temp[1-3] (2 remote diodes and 1 internal), 8 voltages in[0-7] (7 external and
46 1 internal) and up to 6 fan speeds fan[1-6]. Additionally, the chips implement
47 up to 5 PWM outputs pwm[1-3,5-6] for controlling fan speeds both manually and
[all …]
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| D | sysfs-interface | 2 ------------------------------------------------
5 through the sysfs interface. Since lm-sensors 3.0.0, libsensors is
6 completely chip-independent. It assumes that all the kernel drivers
10 This is a major improvement compared to lm-sensors 2.
22 For this reason, even if we aim at a chip-independent libsensors, it will
37 Up to lm-sensors 3.0.0, libsensors looks for hardware monitoring attributes
38 in the "physical" device directory. Since lm-sensors 3.0.1, attributes found
46 There is only one value per file, unlike the older /proc specification.
61 to cause an alarm) is chip-dependent.
68 -------------------------------------------------------------------------
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| D | smsc47b397 | 5 * SMSC LPC47B397-NC
6 * SMSC SCH5307-NS
17 The following specification describes the SMSC LPC47B397-NC[1] sensor chip
19 provided by Craig Kelly (In-Store Broadcast Network) and edited/corrected
22 [1] And SMSC SCH5307-NS and SCH5317, which have different device IDs but are
71 The SIO counts the number of 90kHz (11.111us) pulses per revolution.
80 RPM = 60 / (2203 * 11.11111 E-6) = 2451 RPM
104 logical device to the INDEX PORT and then write or read the config-
135 The Device ID will read 0x6F (0x81 for SCH5307-NS, and 0x85 for SCH5317)
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| /kernel/linux/linux-5.10/Documentation/hwmon/ |
| D | g762.rst | 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.
18 hardware characteristics of the system (reference clock, pulses per
19 fan revolution, ...); Those can be modified via devicetree bindings
25 set desired fan speed. This only makes sense in closed-loop
36 number of pulses per fan revolution. Supported values
44 in closed-loop control mode, if fan RPM value is 25% out
50 speed control (open-loop) via pwm1 described below, 2 for
[all …]
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| D | g760a.rst | 6 * Global Mixed-mode Technology Inc. G760A
12 http://www.gmt.com.tw/product/datasheet/EDS-760A.pdf
17 -----------
20 and performs closed-loop control of the fan speed.
23 consecutive speed pulses. The period is defined in terms of clock
31 source and a 2 pulse-per-revolution fan.
|
| D | sl28cpld.rst | 1 .. SPDX-License-Identifier: GPL-2.0-only
17 -----------
30 -------------
35 fan1_input Fan RPM. Assuming 2 pulses per revolution.
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| D | dme1737.rst | 18 Addresses scanned: none, address read from Super-I/O config space
34 Addresses scanned: none, address read from Super-I/O config space
43 -----------------
52 Include non-standard LPC addresses 0x162e and 0x164e
55 - VIA EPIA SN18000
59 -----------
63 and SCH5127 Super-I/O chips. These chips feature monitoring of 3 temp sensors
64 temp[1-3] (2 remote diodes and 1 internal), 8 voltages in[0-7] (7 external and
65 1 internal) and up to 6 fan speeds fan[1-6]. Additionally, the chips implement
66 up to 5 PWM outputs pwm[1-3,5-6] for controlling fan speeds both manually and
[all …]
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| D | sysfs-interface.rst | 5 through the sysfs interface. Since lm-sensors 3.0.0, libsensors is
6 completely chip-independent. It assumes that all the kernel drivers
10 This is a major improvement compared to lm-sensors 2.
22 For this reason, even if we aim at a chip-independent libsensors, it will
37 Up to lm-sensors 3.0.0, libsensors looks for hardware monitoring attributes
38 in the "physical" device directory. Since lm-sensors 3.0.1, attributes found
46 There is only one value per file, unlike the older /proc specification.
61 to cause an alarm) is chip-dependent.
68 -------------------------------------------------------------------------
71 `[0-*]` denotes any positive number starting from 0
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| D | smsc47b397.rst | 6 * SMSC LPC47B397-NC
8 * SMSC SCH5307-NS
20 - Mark M. Hoffman <mhoffman@lightlink.com>
21 - Utilitek Systems, Inc.
25 The following specification describes the SMSC LPC47B397-NC [1]_ sensor chip
27 provided by Craig Kelly (In-Store Broadcast Network) and edited/corrected
30 .. [1] And SMSC SCH5307-NS and SCH5317, which have different device IDs but are
33 -------------------------------------------------------------------------
36 -------------------------------------------------------------------------
87 --------------------------------------
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| /kernel/linux/linux-5.10/drivers/hwmon/ |
| D | axi-fan-control.c | 1 // SPDX-License-Identifier: GPL-2.0
9 #include <linux/fpga/adi-axi-common.h>
46 /* pulses per revolution */
56 iowrite32(val, ctl->base + reg); in axi_iowrite()
62 return ioread32(ctl->base + reg); in axi_ioread()
99 * TACH = 60/(ppr * rpm), where rpm is revolutions per second in axi_fan_control_get_fan_rpm()
100 * and ppr is pulses per revolution. in axi_fan_control_get_fan_rpm()
105 return DIV_ROUND_CLOSEST(60 * ctl->clk_rate, ctl->ppr * tach); in axi_fan_control_get_fan_rpm()
118 * T = (ADC * 501.3743 / 2^bits) - 273.6777 in axi_fan_control_read_temp()
122 *val = ((raw_temp * 501374) >> 16) - 273677; in axi_fan_control_read_temp()
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| D | pwm-fan.c | 1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * pwm-fan.c - Hwmon driver for fans connected to PWM lines.
11 #include <linux/hwmon-sysfs.h>
31 atomic_t pulses; member
49 atomic_inc(&ctx->pulses); in pulse_handler()
57 unsigned int delta = ktime_ms_delta(ktime_get(), ctx->sample_start); in sample_timer()
58 int pulses; in sample_timer() local
61 pulses = atomic_read(&ctx->pulses); in sample_timer()
62 atomic_sub(pulses, &ctx->pulses); in sample_timer()
63 ctx->rpm = (unsigned int)(pulses * 1000 * 60) / in sample_timer()
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| D | g762.c | 1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * g762 - Driver for the Global Mixed-mode Technology Inc. fan speed
15 * http://natisbad.org/NAS/refs/GMT_EDS-762_763-080710-0.2.pdf
27 * http://www.gmt.com.tw/product/datasheet/EDS-762_3.pdf
36 #include <linux/hwmon-sysfs.h>
67 #define G762_REG_FAN_CMD1_FAN_MODE 0x10 /* fan mode: closed/open-loop */
71 #define G762_REG_FAN_CMD1_PULSE_PER_REV 0x01 /* pulse per fan revolution */
91 /* Register data is read (and cached) at most once per second. */
95 * Extract pulse count per fan revolution value (2 or 4) from given
131 u8 set_cnt; /* controls fan rotation speed in closed-loop mode */
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| D | sl28cpld-hwmon.c | 1 // SPDX-License-Identifier: GPL-2.0-only
43 ret = regmap_read(hwmon->regmap, hwmon->offset + FAN_INPUT, in sl28cpld_hwmon_read()
57 * says we should asssume 2 pulses per revolution. in sl28cpld_hwmon_read()
63 return -EOPNOTSUPP; in sl28cpld_hwmon_read()
101 if (!pdev->dev.parent) in sl28cpld_hwmon_probe()
102 return -ENODEV; in sl28cpld_hwmon_probe()
104 hwmon = devm_kzalloc(&pdev->dev, sizeof(*hwmon), GFP_KERNEL); in sl28cpld_hwmon_probe()
106 return -ENOMEM; in sl28cpld_hwmon_probe()
108 hwmon->regmap = dev_get_regmap(pdev->dev.parent, NULL); in sl28cpld_hwmon_probe()
109 if (!hwmon->regmap) in sl28cpld_hwmon_probe()
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| D | max6639.c | 1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * max6639.c - Support for Maxim MAX6639
5 * 2-Channel Temperature Monitor with Dual PWM Fan-Speed Controller
19 #include <linux/hwmon-sysfs.h>
83 u8 temp_therm[2]; /* THERM Temperature, 0..255 C (->_max) */
84 u8 temp_alert[2]; /* ALERT Temperature, 0..255 C (->_crit) */
85 u8 temp_ot[2]; /* OT Temperature, 0..255 C (->_emergency) */
88 u8 ppr; /* Pulses per rotation 0..3 for 1..4 ppr */
95 struct i2c_client *client = data->client; in max6639_update_device()
100 mutex_lock(&data->update_lock); in max6639_update_device()
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| 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>
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()
163 mutex_lock(&data->update_lock); in max6650_update_device()
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| D | dme1737.c | 1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * dme1737.c - Driver for the SMSC DME1737, Asus A8000, SMSC SCH311x, SCH5027,
4 * and SCH5127 Super-I/O chips integrated hardware monitoring
24 #include <linux/hwmon-sysfs.h>
25 #include <linux/hwmon-vid.h>
46 "Include probing of non-standard LPC addresses");
55 /* ---------------------------------------------------------------------
61 * -------- ------------
71 * --------------------------------------------------------------------- */
73 /* Voltages (in) numbered 0-7 (ix) */
[all …]
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| /kernel/linux/linux-4.19/drivers/hwmon/ |
| D | g762.c | 2 * g762 - Driver for the Global Mixed-mode Technology Inc. fan speed
14 * http://natisbad.org/NAS/refs/GMT_EDS-762_763-080710-0.2.pdf
26 * http://www.gmt.com.tw/product/datasheet/EDS-762_3.pdf
49 #include <linux/hwmon-sysfs.h>
80 #define G762_REG_FAN_CMD1_FAN_MODE 0x10 /* fan mode: closed/open-loop */
84 #define G762_REG_FAN_CMD1_PULSE_PER_REV 0x01 /* pulse per fan revolution */
104 /* Register data is read (and cached) at most once per second. */
108 * Extract pulse count per fan revolution value (2 or 4) from given
144 u8 set_cnt; /* controls fan rotation speed in closed-loop mode */
151 u8 set_out; /* controls fan rotation speed in open-loop mode */
[all …]
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| D | max6639.c | 2 * max6639.c - Support for Maxim MAX6639
4 * 2-Channel Temperature Monitor with Dual PWM Fan-Speed Controller
32 #include <linux/hwmon-sysfs.h>
96 u8 temp_therm[2]; /* THERM Temperature, 0..255 C (->_max) */
97 u8 temp_alert[2]; /* ALERT Temperature, 0..255 C (->_crit) */
98 u8 temp_ot[2]; /* OT Temperature, 0..255 C (->_emergency) */
101 u8 ppr; /* Pulses per rotation 0..3 for 1..4 ppr */
108 struct i2c_client *client = data->client; in max6639_update_device()
113 mutex_lock(&data->update_lock); in max6639_update_device()
115 if (time_after(jiffies, data->last_updated + 2 * HZ) || !data->valid) { in max6639_update_device()
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| D | max6650.c | 2 * max6650.c - Part of lm_sensors, Linux kernel modules for hardware
17 * http://pdfserv.maxim-ic.com/en/ds/MAX6650-MAX6651.pdf
40 #include <linux/hwmon-sysfs.h>
103 /* Minimum and maximum values of the FAN-RPM */
153 struct i2c_client *client = data->client; in max6650_update_device()
156 mutex_lock(&data->update_lock); in max6650_update_device()
158 if (time_after(jiffies, data->last_updated + HZ) || !data->valid) { in max6650_update_device()
159 data->speed = i2c_smbus_read_byte_data(client, in max6650_update_device()
161 data->config = i2c_smbus_read_byte_data(client, in max6650_update_device()
163 for (i = 0; i < data->nr_fans; i++) { in max6650_update_device()
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| D | dme1737.c | 2 * dme1737.c - Driver for the SMSC DME1737, Asus A8000, SMSC SCH311x, SCH5027,
3 * and SCH5127 Super-I/O chips integrated hardware monitoring
37 #include <linux/hwmon-sysfs.h>
38 #include <linux/hwmon-vid.h>
59 "Include probing of non-standard LPC addresses");
68 /* ---------------------------------------------------------------------
74 * -------- ------------
84 * --------------------------------------------------------------------- */
86 /* Voltages (in) numbered 0-7 (ix) */
95 /* Temperatures (temp) numbered 0-2 (ix) */
[all …]
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