diff options
Diffstat (limited to 'Documentation/ABI/testing')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-bus-acpi | 58 | ||||
| -rw-r--r-- | Documentation/ABI/testing/sysfs-class-devfreq | 20 | ||||
| -rw-r--r-- | Documentation/ABI/testing/sysfs-devices-online | 20 | ||||
| -rw-r--r-- | Documentation/ABI/testing/sysfs-devices-sun | 2 | ||||
| -rw-r--r-- | Documentation/ABI/testing/sysfs-devices-system-cpu | 15 | ||||
| -rw-r--r-- | Documentation/ABI/testing/sysfs-firmware-acpi | 10 |
6 files changed, 124 insertions, 1 deletions
diff --git a/Documentation/ABI/testing/sysfs-bus-acpi b/Documentation/ABI/testing/sysfs-bus-acpi new file mode 100644 index 00000000000..7fa9cbc7534 --- /dev/null +++ b/Documentation/ABI/testing/sysfs-bus-acpi @@ -0,0 +1,58 @@ +What: /sys/bus/acpi/devices/.../path +Date: December 2006 +Contact: Rafael J. Wysocki <rjw@rjwysocki.net> +Description: + This attribute indicates the full path of ACPI namespace + object associated with the device object. For example, + \_SB_.PCI0. + This file is not present for device objects representing + fixed ACPI hardware features (like power and sleep + buttons). + +What: /sys/bus/acpi/devices/.../modalias +Date: July 2007 +Contact: Rafael J. Wysocki <rjw@rjwysocki.net> +Description: + This attribute indicates the PNP IDs of the device object. + That is acpi:HHHHHHHH:[CCCCCCC:]. Where each HHHHHHHH or + CCCCCCCC contains device object's PNPID (_HID or _CID). + +What: /sys/bus/acpi/devices/.../hid +Date: April 2005 +Contact: Rafael J. Wysocki <rjw@rjwysocki.net> +Description: + This attribute indicates the hardware ID (_HID) of the + device object. For example, PNP0103. + This file is present for device objects having the _HID + control method. + +What: /sys/bus/acpi/devices/.../description +Date: October 2012 +Contact: Rafael J. Wysocki <rjw@rjwysocki.net> +Description: + This attribute contains the output of the device object's + _STR control method, if present. + +What: /sys/bus/acpi/devices/.../adr +Date: October 2012 +Contact: Rafael J. Wysocki <rjw@rjwysocki.net> +Description: + This attribute contains the output of the device object's + _ADR control method, which is present for ACPI device + objects representing devices having standard enumeration + algorithms, such as PCI. + +What: /sys/bus/acpi/devices/.../uid +Date: October 2012 +Contact: Rafael J. Wysocki <rjw@rjwysocki.net> +Description: + This attribute contains the output of the device object's + _UID control method, if present. + +What: /sys/bus/acpi/devices/.../eject +Date: December 2006 +Contact: Rafael J. Wysocki <rjw@rjwysocki.net> +Description: + Writing 1 to this attribute will trigger hot removal of + this device object. This file exists for every device + object that has _EJ0 method. diff --git a/Documentation/ABI/testing/sysfs-class-devfreq b/Documentation/ABI/testing/sysfs-class-devfreq index 0ba6ea2f89d..ee39acacf6f 100644 --- a/Documentation/ABI/testing/sysfs-class-devfreq +++ b/Documentation/ABI/testing/sysfs-class-devfreq @@ -78,3 +78,23 @@ Contact: Nishanth Menon <nm@ti.com> Description: The /sys/class/devfreq/.../available_governors shows currently available governors in the system. + +What: /sys/class/devfreq/.../min_freq +Date: January 2013 +Contact: MyungJoo Ham <myungjoo.ham@samsung.com> +Description: + The /sys/class/devfreq/.../min_freq shows and stores + the minimum frequency requested by users. It is 0 if + the user does not care. min_freq overrides the + frequency requested by governors. + +What: /sys/class/devfreq/.../max_freq +Date: January 2013 +Contact: MyungJoo Ham <myungjoo.ham@samsung.com> +Description: + The /sys/class/devfreq/.../max_freq shows and stores + the maximum frequency requested by users. It is 0 if + the user does not care. max_freq overrides the + frequency requested by governors and min_freq. + The max_freq overrides min_freq because max_freq may be + used to throttle devices to avoid overheating. diff --git a/Documentation/ABI/testing/sysfs-devices-online b/Documentation/ABI/testing/sysfs-devices-online new file mode 100644 index 00000000000..f990026c074 --- /dev/null +++ b/Documentation/ABI/testing/sysfs-devices-online @@ -0,0 +1,20 @@ +What: /sys/devices/.../online +Date: April 2013 +Contact: Rafael J. Wysocki <rafael.j.wysocki@intel.com> +Description: + The /sys/devices/.../online attribute is only present for + devices whose bus types provide .online() and .offline() + callbacks. The number read from it (0 or 1) reflects the value + of the device's 'offline' field. If that number is 1 and '0' + (or 'n', or 'N') is written to this file, the device bus type's + .offline() callback is executed for the device and (if + successful) its 'offline' field is updated accordingly. In + turn, if that number is 0 and '1' (or 'y', or 'Y') is written to + this file, the device bus type's .online() callback is executed + for the device and (if successful) its 'offline' field is + updated as appropriate. + + After a successful execution of the bus type's .offline() + callback the device cannot be used for any purpose until either + it is removed (i.e. device_del() is called for it), or its bus + type's .online() is exeucted successfully. diff --git a/Documentation/ABI/testing/sysfs-devices-sun b/Documentation/ABI/testing/sysfs-devices-sun index 86be9848a77..625ce4b6375 100644 --- a/Documentation/ABI/testing/sysfs-devices-sun +++ b/Documentation/ABI/testing/sysfs-devices-sun @@ -1,4 +1,4 @@ -Whatt: /sys/devices/.../sun +What: /sys/devices/.../sun Date: October 2012 Contact: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com> Description: diff --git a/Documentation/ABI/testing/sysfs-devices-system-cpu b/Documentation/ABI/testing/sysfs-devices-system-cpu index 2447698aed4..468e4d48f88 100644 --- a/Documentation/ABI/testing/sysfs-devices-system-cpu +++ b/Documentation/ABI/testing/sysfs-devices-system-cpu @@ -144,6 +144,21 @@ Description: Discover and change clock speed of CPUs to learn how to control the knobs. +What: /sys/devices/system/cpu/cpu#/cpufreq/freqdomain_cpus +Date: June 2013 +Contact: cpufreq@vger.kernel.org +Description: Discover CPUs in the same CPU frequency coordination domain + + freqdomain_cpus is the list of CPUs (online+offline) that share + the same clock/freq domain (possibly at the hardware level). + That information may be hidden from the cpufreq core and the + value of related_cpus may be different from freqdomain_cpus. This + attribute is useful for user space DVFS controllers to get better + power/performance results for platforms using acpi-cpufreq. + + This file is only present if the acpi-cpufreq driver is in use. + + What: /sys/devices/system/cpu/cpu*/cache/index3/cache_disable_{0,1} Date: August 2008 KernelVersion: 2.6.27 diff --git a/Documentation/ABI/testing/sysfs-firmware-acpi b/Documentation/ABI/testing/sysfs-firmware-acpi index ce9bee98b43..b4436cca97a 100644 --- a/Documentation/ABI/testing/sysfs-firmware-acpi +++ b/Documentation/ABI/testing/sysfs-firmware-acpi @@ -44,6 +44,16 @@ Description: or 0 (unset). Attempts to write any other values to it will cause -EINVAL to be returned. +What: /sys/firmware/acpi/hotplug/force_remove +Date: May 2013 +Contact: Rafael J. Wysocki <rafael.j.wysocki@intel.com> +Description: + The number in this file (0 or 1) determines whether (1) or not + (0) the ACPI subsystem will allow devices to be hot-removed even + if they cannot be put offline gracefully (from the kernel's + viewpoint). That number can be changed by writing a boolean + value to this file. + What: /sys/firmware/acpi/interrupts/ Date: February 2008 Contact: Len Brown <lenb@kernel.org> |