On Wed 2017-11-15 08:36:42, Greg KH wrote: > On Tue, Nov 14, 2017 at 11:13:43PM -0800, Bjorn Andersson wrote: > > Some LED controllers have support for autonomously controlling > > brightness over time, according to some preprogrammed pattern or > > function. > > > > This adds a new optional operator that LED class drivers can implement > > if they support such functionality as well as a new device attribute to > > configure the pattern for a given LED. > > > > Signed-off-by: Bjorn Andersson <bjorn.andersson@xxxxxxxxxx> > > --- > > > > Changes since v2: > > - None > > > > Changes since v1: > > - New patch, based on discussions following v1 > > > > Documentation/ABI/testing/sysfs-class-led | 20 ++++ > > drivers/leds/led-class.c | 150 ++++++++++++++++++++++++++++++ > > include/linux/leds.h | 21 +++++ > > 3 files changed, 191 insertions(+) > > > > diff --git a/Documentation/ABI/testing/sysfs-class-led b/Documentation/ABI/testing/sysfs-class-led > > index 5f67f7ab277b..74a7f5b1f89b 100644 > > --- a/Documentation/ABI/testing/sysfs-class-led > > +++ b/Documentation/ABI/testing/sysfs-class-led > > @@ -61,3 +61,23 @@ Description: > > gpio and backlight triggers. In case of the backlight trigger, > > it is useful when driving a LED which is intended to indicate > > a device in a standby like state. > > + > > +What: /sys/class/leds/<led>/pattern > > +Date: July 2017 > > That was many months ago :) > > > +KernelVersion: 4.14 > > And that kernel version is long since released :) Yeah, the other problem is it has some interesting format with ":|" marking repeat, and is not really suitable for RGB LEDs... I'd really prefer to get driver in first, and add pattern interface later. Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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