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Documentation: rtc: add sysfs file permissions 

Annotate the sysfs interface of rtc with file specific permissions
(RO/RW).

Signed-off-by: Aishwarya Pant <aishpant@gmail.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
This commit is contained in:
Aishwarya Pant 2018-01-01 23:00:42 +05:30 committed by Alexandre Belloni
parent 81fdc7afdd
commit d5bc5cde84
1 changed files with 21 additions and 19 deletions
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40
Documentation/ABI/testing/sysfs-class-rtc
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@ -18,14 +18,14 @@ Date: March 2006
KernelVersion: 2.6.17
Contact: linux-rtc@vger.kernel.org
Description:
RTC-provided date in YYYY-MM-DD format
(RO) RTC-provided date in YYYY-MM-DD format
What: /sys/class/rtc/rtcX/hctosys
Date: September 2009
KernelVersion: 2.6.32
Contact: linux-rtc@vger.kernel.org
Description:
1 if the RTC provided the system time at boot via the
(RO) 1 if the RTC provided the system time at boot via the
CONFIG_RTC_HCTOSYS kernel option, 0 otherwise
What: /sys/class/rtc/rtcX/max_user_freq
@ -33,7 +33,7 @@ Date: October 2007
KernelVersion: 2.6.24
Contact: linux-rtc@vger.kernel.org
Description:
The maximum interrupt rate an unprivileged user may request
(RW) The maximum interrupt rate an unprivileged user may request
from this RTC.
What: /sys/class/rtc/rtcX/name
@ -41,49 +41,51 @@ Date: March 2006
KernelVersion: 2.6.17
Contact: linux-rtc@vger.kernel.org
Description:
The name of the RTC corresponding to this sysfs directory
(RO) The name of the RTC corresponding to this sysfs directory
What: /sys/class/rtc/rtcX/since_epoch
Date: March 2006
KernelVersion: 2.6.17
Contact: linux-rtc@vger.kernel.org
Description:
RTC-provided time as the number of seconds since the epoch
(RO) RTC-provided time as the number of seconds since the epoch
What: /sys/class/rtc/rtcX/time
Date: March 2006
KernelVersion: 2.6.17
Contact: linux-rtc@vger.kernel.org
Description:
RTC-provided time in 24-hour notation (hh:mm:ss)
(RO) RTC-provided time in 24-hour notation (hh:mm:ss)
What: /sys/class/rtc/rtcX/*/nvmem
Date: February 2016
KernelVersion: 4.6
Contact: linux-rtc@vger.kernel.org
Description:
The non volatile storage exported as a raw file, as described in
Documentation/nvmem/nvmem.txt
(RW) The non volatile storage exported as a raw file, as
described in Documentation/nvmem/nvmem.txt
What: /sys/class/rtc/rtcX/offset
Date: February 2016
KernelVersion: 4.6
Contact: linux-rtc@vger.kernel.org
Description:
The amount which the rtc clock has been adjusted in firmware.
Visible only if the driver supports clock offset adjustment.
The unit is parts per billion, i.e. The number of clock ticks
which are added to or removed from the rtc's base clock per
billion ticks. A positive value makes a day pass more slowly,
longer, and a negative value makes a day pass more quickly.
(RW) The amount which the rtc clock has been adjusted in
firmware. Visible only if the driver supports clock offset
adjustment. The unit is parts per billion, i.e. The number of
clock ticks which are added to or removed from the rtc's base
clock per billion ticks. A positive value makes a day pass more
slowly, longer, and a negative value makes a day pass more
quickly.
What: /sys/class/rtc/rtcX/wakealarm
Date: February 2007
KernelVersion: 2.6.20
Contact: linux-rtc@vger.kernel.org
Description:
The time at which the clock will generate a system wakeup event.
This is a one shot wakeup event, so must be reset after wake if
a daily wakeup is required. Format is seconds since the epoch by
default, or if there's a leading +, seconds in the future, or if
there is a leading +=, seconds ahead of the current alarm.
(RW) The time at which the clock will generate a system wakeup
event. This is a one shot wakeup event, so must be reset after
wake if a daily wakeup is required. Format is seconds since the
epoch by default, or if there's a leading +, seconds in the
future, or if there is a leading +=, seconds ahead of the
current alarm.