From mboxrd@z Thu Jan 1 00:00:00 1970 From: Pavel Machek Subject: Re: [PATCH/RFC v10 01/19] leds: Add LED Flash class extension to the LED subsystem Date: Fri, 9 Jan 2015 18:37:07 +0100 Message-ID: <20150109173707.GB18076@amd> References: <1420816989-1808-1-git-send-email-j.anaszewski@samsung.com> <1420816989-1808-2-git-send-email-j.anaszewski@samsung.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <1420816989-1808-2-git-send-email-j.anaszewski@samsung.com> Sender: linux-leds-owner@vger.kernel.org To: Jacek Anaszewski Cc: linux-leds@vger.kernel.org, linux-media@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, kyungmin.park@samsung.com, b.zolnierkie@samsung.com, cooloney@gmail.com, rpurdie@rpsys.net, sakari.ailus@iki.fi, s.nawrocki@samsung.com List-Id: devicetree@vger.kernel.org On Fri 2015-01-09 16:22:51, Jacek Anaszewski wrote: > 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: Bryan Wu > Cc: Richard Purdie Acked-by: Pavel Machek -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html