From: Jacek Anaszewski Date: Fri, 9 Jan 2015 15:22:51 +0000 (-0800) Subject: leds: Add LED Flash class extension to the LED subsystem X-Git-Tag: fixes-v4.0-rc1~109^2~2 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7aea8389a77abf9fde254aca2434a605c7704f58;p=pandora-kernel.git leds: Add LED Flash class extension to the LED subsystem 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 Acked-by: Kyungmin Park Cc: Richard Purdie Acked-by: Pavel Machek Signed-off-by: Bryan Wu --- Reading git-diff-tree failed