On 11/08/17 12:57, Tomi Valkeinen wrote: > Hi Hans, > > > Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki. Y-tunnus/Business ID: 0615521-4. Kotipaikka/Domicile: Helsinki > > On 02/08/17 11:53, Hans Verkuil wrote: >> From: Hans Verkuil <hans.verkuil@xxxxxxxxx> >> >> This patch series adds CEC support for the omap4. It is based on >> the 4.13-rc2 kernel with this patch series applied: >> >> http://www.spinics.net/lists/dri-devel/msg143440.html >> >> It is virtually identical to the first patch series posted in >> April: >> >> http://www.spinics.net/lists/dri-devel/msg138950.html >> >> The only two changes are in the Kconfig due to CEC Kconfig >> changes in 4.13 (it now selects CEC_CORE instead of depending on >> CEC_CORE) and a final patch was added adding a lost_hotplug op >> since for proper CEC support I have to know when the hotplug >> signal goes away. >> >> Tested with my Pandaboard. > > I'm doing some testing with this series on my panda. One issue I see is > that when I unload the display modules, I get: > > [ 75.180206] platform 58006000.encoder: enabled after unload, idling > [ 75.187896] platform 58001000.dispc: enabled after unload, idling > [ 75.198242] platform 58000000.dss: enabled after unload, idling > > So I think something is left enabled, most likely in the HDMI driver. I > haven't debugged this yet. > > The first time I loaded the modules I also got "operation stopped when > reading edid", but I haven't seen that since. Possibly not related to > this series. > > Are there some simple ways to test the CEC? My buildroot fs has > cec-compliance, cec-ctl and cec-follower commands. Are you familiar with > those? Can they be used? I'm very familiar with them since I wrote them :-) The latest version of those utilities are maintained here: https://git.linuxtv.org/v4l-utils.git/ But the ones from buildroot should be fine. To use: cec-ctl --playback # configure the CEC adapter as a playback device cec-ctl -S # Detect and show all CEC devices Note: all cec utilities use /dev/cec0 as the default device node. Use the -d option to specify another device node. So assuming you have the panda connected to a CEC-capable TV you should see the TV in that list. You can use cec-compliance to check the CEC compliance of devices: cec-ctl --playback cec-follower # emulate a CEC playback device follower functionality In another shell run: cec-compliance -r0 # Test remote CEC device with logical address 0 (== TV) Regards, Hans _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel
