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) - configuring the connection (e.g. what kind of device should the laptop appear as, request the TV to pass remote control keys, etc.) - the TV will also send other CEC messages to the laptop, hence the application should listen for such messages and act accordingly 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. Best wishes, -- Kamil Debski Samsung R&D Institute Poland _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/dri-devel
