Searched hist:f1197343f07749035d74c08cf8b546c4f95614ab (Results 1 – 3 of 3) sorted by relevance
| /openbmc/linux/drivers/acpi/ |
| H A D | fan_attr.c | diff f1197343f07749035d74c08cf8b546c4f95614ab Fri Feb 11 10:09:31 CST 2022 Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> ACPI: fan: Add additional attributes for fine grain control
Add additional attributes, which helps in implementing algorithm in
the user space to optimize fan control. These attributes are presented
in the same directory as the existing performance state attributes.
Additional attributes:
1. Support of fine grain control
Publish support of presence of fine grain control so that fan speed
can be tuned correctly. This attribute is called "fine_grain_control".
2. fan speed
Publish the actual fan rpm in sysfs. Knowing fan rpm is helpful to
reduce noise level and use passive control instead. Also fan performance
may not be same over time, so the same control value may not be enough
to run the fan at a speed. So a feedback value of speed is helpful. This
sysfs attribute is called "fan_speed_rpm".
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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| H A D | fan.h | diff f1197343f07749035d74c08cf8b546c4f95614ab Fri Feb 11 10:09:31 CST 2022 Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> ACPI: fan: Add additional attributes for fine grain control
Add additional attributes, which helps in implementing algorithm in
the user space to optimize fan control. These attributes are presented
in the same directory as the existing performance state attributes.
Additional attributes:
1. Support of fine grain control
Publish support of presence of fine grain control so that fan speed
can be tuned correctly. This attribute is called "fine_grain_control".
2. fan speed
Publish the actual fan rpm in sysfs. Knowing fan rpm is helpful to
reduce noise level and use passive control instead. Also fan performance
may not be same over time, so the same control value may not be enough
to run the fan at a speed. So a feedback value of speed is helpful. This
sysfs attribute is called "fan_speed_rpm".
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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| H A D | fan_core.c | diff f1197343f07749035d74c08cf8b546c4f95614ab Fri Feb 11 10:09:31 CST 2022 Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> ACPI: fan: Add additional attributes for fine grain control
Add additional attributes, which helps in implementing algorithm in
the user space to optimize fan control. These attributes are presented
in the same directory as the existing performance state attributes.
Additional attributes:
1. Support of fine grain control
Publish support of presence of fine grain control so that fan speed
can be tuned correctly. This attribute is called "fine_grain_control".
2. fan speed
Publish the actual fan rpm in sysfs. Knowing fan rpm is helpful to
reduce noise level and use passive control instead. Also fan performance
may not be same over time, so the same control value may not be enough
to run the fan at a speed. So a feedback value of speed is helpful. This
sysfs attribute is called "fan_speed_rpm".
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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