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-rw-r--r--Documentation/ABI/testing/sysfs-devices-power27
-rw-r--r--Documentation/ABI/testing/sysfs-power5
2 files changed, 29 insertions, 3 deletions
diff --git a/Documentation/ABI/testing/sysfs-devices-power b/Documentation/ABI/testing/sysfs-devices-power
index efe449bdf811..7dbf96b724ed 100644
--- a/Documentation/ABI/testing/sysfs-devices-power
+++ b/Documentation/ABI/testing/sysfs-devices-power
@@ -187,7 +187,7 @@ Description:
187 Not all drivers support this attribute. If it isn't supported, 187 Not all drivers support this attribute. If it isn't supported,
188 attempts to read or write it will yield I/O errors. 188 attempts to read or write it will yield I/O errors.
189 189
190What: /sys/devices/.../power/pm_qos_latency_us 190What: /sys/devices/.../power/pm_qos_resume_latency_us
191Date: March 2012 191Date: March 2012
192Contact: Rafael J. Wysocki <rjw@rjwysocki.net> 192Contact: Rafael J. Wysocki <rjw@rjwysocki.net>
193Description: 193Description:
@@ -205,6 +205,31 @@ Description:
205 This attribute has no effect on system-wide suspend/resume and 205 This attribute has no effect on system-wide suspend/resume and
206 hibernation. 206 hibernation.
207 207
208What: /sys/devices/.../power/pm_qos_latency_tolerance_us
209Date: January 2014
210Contact: Rafael J. Wysocki <rjw@rjwysocki.net>
211Description:
212 The /sys/devices/.../power/pm_qos_latency_tolerance_us attribute
213 contains the PM QoS active state latency tolerance limit for the
214 given device in microseconds. That is the maximum memory access
215 latency the device can suffer without any visible adverse
216 effects on user space functionality. If that value is the
217 string "any", the latency does not matter to user space at all,
218 but hardware should not be allowed to set the latency tolerance
219 for the device automatically.
220
221 Reading "auto" from this file means that the maximum memory
222 access latency for the device may be determined automatically
223 by the hardware as needed. Writing "auto" to it allows the
224 hardware to be switched to this mode if there are no other
225 latency tolerance requirements from the kernel side.
226
227 This attribute is only present if the feature controlled by it
228 is supported by the hardware.
229
230 This attribute has no effect on runtime suspend and resume of
231 devices and on system-wide suspend/resume and hibernation.
232
208What: /sys/devices/.../power/pm_qos_no_power_off 233What: /sys/devices/.../power/pm_qos_no_power_off
209Date: September 2012 234Date: September 2012
210Contact: Rafael J. Wysocki <rjw@rjwysocki.net> 235Contact: Rafael J. Wysocki <rjw@rjwysocki.net>
diff --git a/Documentation/ABI/testing/sysfs-power b/Documentation/ABI/testing/sysfs-power
index 205a73878441..64c9276e9421 100644
--- a/Documentation/ABI/testing/sysfs-power
+++ b/Documentation/ABI/testing/sysfs-power
@@ -12,8 +12,9 @@ Contact: Rafael J. Wysocki <rjw@rjwysocki.net>
12Description: 12Description:
13 The /sys/power/state file controls the system power state. 13 The /sys/power/state file controls the system power state.
14 Reading from this file returns what states are supported, 14 Reading from this file returns what states are supported,
15 which is hard-coded to 'standby' (Power-On Suspend), 'mem' 15 which is hard-coded to 'freeze' (Low-Power Idle), 'standby'
16 (Suspend-to-RAM), and 'disk' (Suspend-to-Disk). 16 (Power-On Suspend), 'mem' (Suspend-to-RAM), and 'disk'
17 (Suspend-to-Disk).
17 18
18 Writing to this file one of these strings causes the system to 19 Writing to this file one of these strings causes the system to
19 transition into that state. Please see the file 20 transition into that state. Please see the file