On Tue, 2015-03-10 at 13:02 +0100, Kamil Debski wrote: > Hi Bastien, > > From: Bastien Nocera [mailto:hadess@xxxxxxxxxx] > Sent: Monday, March 09, 2015 5:44 PM > > > > On Mon, 2015-03-09 at 17:22 +0100, Kamil Debski wrote: > > > Hi Mauro, > > > > > > From: Mauro Carvalho Chehab [mailto:mchehab@xxxxxxxxxxxxxxx] > > > Sent: Sunday, March 08, 2015 3:21 PM > > > > > > > Em Thu, 22 Jan 2015 17:04:34 +0100 > > > > Kamil Debski <k.debski@xxxxxxxxxxx> escreveu: > > > > > > > > (c/c linux-input ML) > > > > > > > > > Add cec protocol handling the RC framework. > > > > > > > > I added some comments, that reflects my understanding from > > > > what's there at the keymap definitions found at: > > > > http://xtreamerdev.googlecode.com/files/CEC_Specs.pdf > > > > > > Thank you very much for the review, Mauro. Your comments are very > > much > > > appreciated. > > > > How does one use this new support? If I plug in my laptop to my > > TV, will using the TV's remote automatically send those key events > > to the laptop? > > It depends on the hardware that is used in your laptop to handle > HDMI. If there is hardware support for CEC then this framework can > be used to create a driver for the laptop's HDMI hardware. Then the > laptop will be able to communicate with the TV over CEC - this > includes receiving key events from the TV. > > Currently there are some CEC devices (and drivers) that enable Linux > to use CEC, but there is no generic framework for CEC in the Linux > kernel. My goal is to introduce such a framework, such that > userspace application could work with different hardware using the > same interface. > > Getting back to your question - using this framework. There should > be some initialization done by a user space application: > - enabling CEC (if needed by the hardware/driver) I have 2 machines that this could work on, a Intel Baytrail tablet, and a laptop with Intel Haswell. Is that part going to be covered by your library, or will there be a drm API for that? > - configuring the connection (e.g. what kind of device should the > laptop appear as, request the TV to pass remote control keys, etc.) That's done through the CEC API as well? > - the TV will also send other CEC messages to the laptop, hence the > application should listen for such messages and act accordingly That's easier to deal with :) Something like LIRC can be used in the short-term. > How this should be done userspace? Definitely, it would be a good > idea to use a library. Maybe a deamon that does the steps mentioned > above would be a good idea? I am working on a simple library > implementation that would wrap the kernel ioctls and provide a more > user friendly API. Great. Do drop me a mail when you have something that I could test. Cheers -- To unsubscribe from this list: send the line "unsubscribe linux-input" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
