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<title>pm24.git/include/linux/led-class-flash.h, branch v4.0-rc2</title>
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</subtitle>
<id>https://git.kobert.dev/pm24.git/atom?h=v4.0-rc2</id>
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<updated>2015-01-26T22:59:08Z</updated>
<entry>
<title>leds: Add LED Flash class extension to the LED subsystem</title>
<updated>2015-01-26T22:59:08Z</updated>
<author>
<name>Jacek Anaszewski</name>
<email>j.anaszewski@samsung.com</email>
</author>
<published>2015-01-09T15:22:51Z</published>
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<content type='text'>
Some LED devices support two operation modes - torch and flash.
This patch provides support for flash LED devices in the LED subsystem
by introducing new sysfs attributes and kernel internal interface.
The attributes being introduced are: flash_brightness, flash_strobe,
flash_timeout, max_flash_timeout, max_flash_brightness, flash_fault,
flash_sync_strobe and available_sync_leds. All the flash related
features are placed in a separate module.

The modifications aim to be compatible with V4L2 framework requirements
related to the flash devices management. The design assumes that V4L2
sub-device can take of the LED class device control and communicate
with it through the kernel internal interface. When V4L2 Flash sub-device
file is opened, the LED class device sysfs interface is made
unavailable.

Signed-off-by: Jacek Anaszewski &lt;j.anaszewski@samsung.com&gt;
Acked-by: Kyungmin Park &lt;kyungmin.park@samsung.com&gt;
Cc: Richard Purdie &lt;rpurdie@rpsys.net&gt;
Acked-by: Pavel Machek &lt;pavel@ucw.cz&gt;
Signed-off-by: Bryan Wu &lt;cooloney@gmail.com&gt;
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