Patchset contains documentation of the sysfs interfaces for the
following five backlight drivers-
1) lm3639
2) adp5520
3) adp8860
It was compiled from data sheets, reading code and git history logs. In v2 of
the patches, documentation for lp8788 and lp855x devices was dropped as the
attributes contained debug information.
Aishwarya Pant (3):
backlight: lm3639: document sysfs attributes
backlight: adp5520: document sysfs attributes
backlight: adp8860: document sysfs attributes
.../ABI/testing/sysfs-class-backlight-adp5520 | 31 +++++++++++++
.../ABI/testing/sysfs-class-backlight-adp8860 | 54 ++++++++++++++++++++++
.../ABI/testing/sysfs-class-backlight-lm3639 | 11 +++++
3 files changed, 96 insertions(+)
create mode 100644 Documentation/ABI/testing/sysfs-class-backlight-adp5520
create mode 100644 Documentation/ABI/testing/sysfs-class-backlight-adp8860
create mode 100644 Documentation/ABI/testing/sysfs-class-backlight-lm3639
--
2.16.1
@@ -0,0 +1,11 @@+sysfs interface for Texas Instruments lm3639 backlight + flash led driver chip+------------------------------------------------------------------------------++What: /sys/class/backlight/<backlight>/bled_mode+Date: Oct, 2012+KernelVersion: v3.10+Contact: dri-devel@lists.freedesktop.org+Description:+ (WO) Write to the backlight mapping mode. The backlight current+ can be mapped for either exponential (value "0") or linear+ mapping modes (default).
@@ -0,0 +1,31 @@+sysfs interface for analog devices adp5520(01) backlight driver+---------------------------------------------------------------++The backlight brightness control operates at three different levels for the+adp5520 and adp5501 devices: daylight (level 1), office (level 2) and dark+(level 3). By default the brightness operates at the daylight brightness level.++What: /sys/class/backlight/<backlight>/daylight_max+What: /sys/class/backlight/<backlight>/office_max+What: /sys/class/backlight/<backlight>/dark_max+Date: Sep, 2009+KernelVersion: v2.6.32+Contact: Michael Hennerich <michael.hennerich@analog.com>+Description:+ (RW) Maximum current setting for the backlight when brightness+ is at one of the three levels (daylight, office or dark). This+ is an input code between 0 and 127, which is transformed to a+ value between 0 mA and 30 mA using linear or non-linear+ algorithms.++What: /sys/class/backlight/<backlight>/daylight_dim+What: /sys/class/backlight/<backlight>/office_dim+What: /sys/class/backlight/<backlight>/dark_dim+Date: Sep, 2009+KernelVersion: v2.6.32+Contact: Michael Hennerich <michael.hennerich@analog.com>+Description:+ (RW) Dim current setting for the backlight when brightness is at+ one of the three levels (daylight, office or dark). This is an+ input code between 0 and 127, which is transformed to a value+ between 0 mA and 30 mA using linear or non-linear algorithms.
From: Daniel Thompson <hidden> Date: 2018-02-06 13:57:08
On Tue, Feb 06, 2018 at 01:10:26PM +0530, Aishwarya Pant wrote:
Add documentation for sysfs interface of adp5520/adp5501 analog devices
backlight driver by reading code and looking through git commit logs.
Signed-off-by: Aishwarya Pant <redacted>
Acked-by: Michael Hennerich <michael.hennerich@analog.com>
@@ -0,0 +1,31 @@+sysfs interface for analog devices adp5520(01) backlight driver+---------------------------------------------------------------++The backlight brightness control operates at three different levels for the+adp5520 and adp5501 devices: daylight (level 1), office (level 2) and dark+(level 3). By default the brightness operates at the daylight brightness level.++What: /sys/class/backlight/<backlight>/daylight_max+What: /sys/class/backlight/<backlight>/office_max+What: /sys/class/backlight/<backlight>/dark_max+Date: Sep, 2009+KernelVersion: v2.6.32+Contact: Michael Hennerich <michael.hennerich@analog.com>+Description:+ (RW) Maximum current setting for the backlight when brightness+ is at one of the three levels (daylight, office or dark). This+ is an input code between 0 and 127, which is transformed to a+ value between 0 mA and 30 mA using linear or non-linear+ algorithms.++What: /sys/class/backlight/<backlight>/daylight_dim+What: /sys/class/backlight/<backlight>/office_dim+What: /sys/class/backlight/<backlight>/dark_dim+Date: Sep, 2009+KernelVersion: v2.6.32+Contact: Michael Hennerich <michael.hennerich@analog.com>+Description:+ (RW) Dim current setting for the backlight when brightness is at+ one of the three levels (daylight, office or dark). This is an+ input code between 0 and 127, which is transformed to a value+ between 0 mA and 30 mA using linear or non-linear algorithms.
@@ -0,0 +1,54 @@+sysfs interface for analog devices adp8860 backlight driver+-----------------------------------------------------------++The backlight brightness control operates at three different levels for the+adp8860, adp8861 and adp8863 devices: daylight (level 1), office (level 2) and+dark (level 3). By default the brightness operates at the daylight brightness+level.++What: /sys/class/backlight/<backlight>/ambient_light_level+Date: Apr, 2010+KernelVersion: v2.6.35+Contact: Michael Hennerich <michael.hennerich@analog.com>+Description:+ (RO) 13-bit conversion value for the first light sensor—high+ byte (Bit 12 to Bit 8). The value is updated every 80 ms (when+ the light sensor is enabled).+++What: /sys/class/backlight/<backlight>/ambient_light_zone+Date: Apr, 2010+KernelVersion: v2.6.35+Contact: Michael Hennerich <michael.hennerich@analog.com>+Description:+ (RW) Read or write the specific level at which the backlight+ operates. Value "0" enables automatic ambient light sensing, and+ values "1", "2" or "3" set the control to daylight, office or+ dark respectively.+++What: /sys/class/backlight/<backlight>/l1_daylight_max+What: /sys/class/backlight/<backlight>/l2_office_max+What: /sys/class/backlight/<backlight>/l3_dark_max+Date: Apr, 2010+KernelVersion: v2.6.35+Contact: Michael Hennerich <michael.hennerich@analog.com>+Description:+ (RW) Maximum current setting for the backlight when brightness+ is at one of the three levels (daylight, office or dark). This+ is an input code between 0 and 127, which is transformed to a+ value between 0 mA and 30 mA using linear or non-linear+ algorithms.+++What: /sys/class/backlight/<backlight>/l1_daylight_dim+What: /sys/class/backlight/<backlight>/l2_office_dim+What: /sys/class/backlight/<backlight>/l3_dark_dim+Date: Apr, 2010+KernelVersion: v2.6.35+Contact: Michael Hennerich <michael.hennerich@analog.com>+Description:+ (RW) Dim current setting for the backlight when brightness is at+ one of the three levels (daylight, office or dark). This is an+ input code between 0 and 127, which is transformed to a value+ between 0 mA and 30 mA using linear or non-linear algorithms.
From: Daniel Thompson <hidden> Date: 2018-02-06 13:57:35
On Tue, Feb 06, 2018 at 01:11:12PM +0530, Aishwarya Pant wrote:
Add documentation for sysfs interface of adp8860 series backlight
devices by reading through code and git commits.
Signed-off-by: Aishwarya Pant <redacted>
Acked-by: Michael Hennerich <michael.hennerich@analog.com>
@@ -0,0 +1,54 @@+sysfs interface for analog devices adp8860 backlight driver+-----------------------------------------------------------++The backlight brightness control operates at three different levels for the+adp8860, adp8861 and adp8863 devices: daylight (level 1), office (level 2) and+dark (level 3). By default the brightness operates at the daylight brightness+level.++What: /sys/class/backlight/<backlight>/ambient_light_level+Date: Apr, 2010+KernelVersion: v2.6.35+Contact: Michael Hennerich <michael.hennerich@analog.com>+Description:+ (RO) 13-bit conversion value for the first light sensor—high+ byte (Bit 12 to Bit 8). The value is updated every 80 ms (when+ the light sensor is enabled).+++What: /sys/class/backlight/<backlight>/ambient_light_zone+Date: Apr, 2010+KernelVersion: v2.6.35+Contact: Michael Hennerich <michael.hennerich@analog.com>+Description:+ (RW) Read or write the specific level at which the backlight+ operates. Value "0" enables automatic ambient light sensing, and+ values "1", "2" or "3" set the control to daylight, office or+ dark respectively.+++What: /sys/class/backlight/<backlight>/l1_daylight_max+What: /sys/class/backlight/<backlight>/l2_office_max+What: /sys/class/backlight/<backlight>/l3_dark_max+Date: Apr, 2010+KernelVersion: v2.6.35+Contact: Michael Hennerich <michael.hennerich@analog.com>+Description:+ (RW) Maximum current setting for the backlight when brightness+ is at one of the three levels (daylight, office or dark). This+ is an input code between 0 and 127, which is transformed to a+ value between 0 mA and 30 mA using linear or non-linear+ algorithms.+++What: /sys/class/backlight/<backlight>/l1_daylight_dim+What: /sys/class/backlight/<backlight>/l2_office_dim+What: /sys/class/backlight/<backlight>/l3_dark_dim+Date: Apr, 2010+KernelVersion: v2.6.35+Contact: Michael Hennerich <michael.hennerich@analog.com>+Description:+ (RW) Dim current setting for the backlight when brightness is at+ one of the three levels (daylight, office or dark). This is an+ input code between 0 and 127, which is transformed to a value+ between 0 mA and 30 mA using linear or non-linear algorithms.
From: Jonathan Corbet <corbet@lwn.net> Date: 2018-02-23 15:23:41
On Tue, 6 Feb 2018 13:08:41 +0530
Aishwarya Pant [off-list ref] wrote:
Patchset contains documentation of the sysfs interfaces for the
following five backlight drivers-
1) lm3639
2) adp5520
3) adp8860
It was compiled from data sheets, reading code and git history logs. In v2 of
the patches, documentation for lp8788 and lp855x devices was dropped as the
attributes contained debug information.
I've applied the set to the docs tree, thanks.
jon