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author | Mauro Carvalho Chehab <mchehab+huawei@kernel.org> | 2021-05-19 10:51:45 +0200 |
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committer | Jonathan Corbet <corbet@lwn.net> | 2021-05-20 13:44:14 -0600 |
commit | 13d6f96750c89f7fc282788bd058559381ccec29 (patch) | |
tree | 57ca8daeb745ef3a4aa902f13b3f76d19b19088d /Documentation/ABI/testing/sysfs-class-backlight | |
parent | 5286bd25e2095d71d248fbfd2a55ca4333dfd77e (diff) | |
download | lwn-13d6f96750c89f7fc282788bd058559381ccec29.tar.gz lwn-13d6f96750c89f7fc282788bd058559381ccec29.zip |
docs: ABI: sysfs-class-backlight: unify ambient light zone nodes
./scripts/get_abi.pl is warning about duplicated symbol
definition:
Warning: /sys/class/backlight/<backlight>/l1_daylight_max is defined 2 times: ./Documentation/ABI/testing/sysfs-class-backlight-driver-adp8870:4 ./Documentation/ABI/testing/sysfs-class-backlight-adp8860:12
What happens is that 3 drivers use the same pattern to report
max and dim setting for different ambient light zones.
It should be noticed that the adp8870 doc was missing an
entry for l1_daylight_dim, which was fixed on this patch.
While the ambient light zone is device-specific, the sysfs
definition is actually common. So, unify them at:
Documentation/ABI/testing/sysfs-class-backlight
and use as the contact point, the e-mail reported by
get_maintainers.pl for the subsystem.
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/c13c6ebd03cd04a0d15d89018f8d529918fc0a73.1621413933.git.mchehab+huawei@kernel.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Diffstat (limited to 'Documentation/ABI/testing/sysfs-class-backlight')
-rw-r--r-- | Documentation/ABI/testing/sysfs-class-backlight | 100 |
1 files changed, 100 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-class-backlight b/Documentation/ABI/testing/sysfs-class-backlight index 1fc86401bf95..c453646b06e2 100644 --- a/Documentation/ABI/testing/sysfs-class-backlight +++ b/Documentation/ABI/testing/sysfs-class-backlight @@ -84,3 +84,103 @@ Description: It can be enabled by writing the value stored in /sys/class/backlight/<backlight>/max_brightness to /sys/class/backlight/<backlight>/brightness. + +What: /sys/class/backlight/<backlight>/<ambient light zone>_max +Date: Sep, 2009 +KernelVersion: v2.6.32 +Contact: device-drivers-devel@blackfin.uclinux.org +Description: + Control the maximum brightness for <ambient light zone> + on this <backlight>. Values are between 0 and 127. This file + will also show the brightness level stored for this + <ambient light zone>. + + The <ambient light zone> is device-driver specific: + + For ADP5520 and ADP5501, <ambient light zone> can be: + + =========== ================================================ + Ambient sysfs entry + light zone + =========== ================================================ + daylight /sys/class/backlight/<backlight>/daylight_max + office /sys/class/backlight/<backlight>/office_max + dark /sys/class/backlight/<backlight>/dark_max + =========== ================================================ + + For ADP8860, <ambient light zone> can be: + + =========== ================================================ + Ambient sysfs entry + light zone + =========== ================================================ + l1_daylight /sys/class/backlight/<backlight>/l1_daylight_max + l2_office /sys/class/backlight/<backlight>/l2_office_max + l3_dark /sys/class/backlight/<backlight>/l3_dark_max + =========== ================================================ + + For ADP8870, <ambient light zone> can be: + + =========== ================================================ + Ambient sysfs entry + light zone + =========== ================================================ + l1_daylight /sys/class/backlight/<backlight>/l1_daylight_max + l2_bright /sys/class/backlight/<backlight>/l2_bright_max + l3_office /sys/class/backlight/<backlight>/l3_office_max + l4_indoor /sys/class/backlight/<backlight>/l4_indoor_max + l5_dark /sys/class/backlight/<backlight>/l5_dark_max + =========== ================================================ + + See also: /sys/class/backlight/<backlight>/ambient_light_zone. + +What: /sys/class/backlight/<backlight>/<ambient light zone>_dim +Date: Sep, 2009 +KernelVersion: v2.6.32 +Contact: device-drivers-devel@blackfin.uclinux.org +Description: + Control the dim brightness for <ambient light zone> + on this <backlight>. Values are between 0 and 127, typically + set to 0. Full off when the backlight is disabled. + This file will also show the dim brightness level stored for + this <ambient light zone>. + + The <ambient light zone> is device-driver specific: + + For ADP5520 and ADP5501, <ambient light zone> can be: + + =========== ================================================ + Ambient sysfs entry + light zone + =========== ================================================ + daylight /sys/class/backlight/<backlight>/daylight_dim + office /sys/class/backlight/<backlight>/office_dim + dark /sys/class/backlight/<backlight>/dark_dim + =========== ================================================ + + For ADP8860, <ambient light zone> can be: + + =========== ================================================ + Ambient sysfs entry + light zone + =========== ================================================ + l1_daylight /sys/class/backlight/<backlight>/l1_daylight_dim + l2_office /sys/class/backlight/<backlight>/l2_office_dim + l3_dark /sys/class/backlight/<backlight>/l3_dark_dim + =========== ================================================ + + For ADP8870, <ambient light zone> can be: + + =========== ================================================ + Ambient sysfs entry + light zone + =========== ================================================ + l1_daylight /sys/class/backlight/<backlight>/l1_daylight_dim + l2_bright /sys/class/backlight/<backlight>/l2_bright_dim + l3_office /sys/class/backlight/<backlight>/l3_office_dim + l4_indoor /sys/class/backlight/<backlight>/l4_indoor_dim + l5_dark /sys/class/backlight/<backlight>/l5_dark_dim + =========== ================================================ + + See also: /sys/class/backlight/<backlight>/ambient_light_zone. + |