Re: [ANN] HDMI CEC Status Update
Hi Andrzej and Hans, On 2017-05-31 10:12, Andrzej Hajda wrote: On 30.05.2017 08:53, Hans Verkuil wrote: For those who are interested in HDMI CEC support I made a little status document that I intend to keep up to date: https://hverkuil.home.xs4all.nl/cec-status.txt My goal is to get CEC supported for any mainlined HDMI driver where the hardware supports CEC. If anyone is working on a CEC driver that I don't know already about, just drop me an email so I can update the status. Sii8620 HDMI->MHL bridge is on my TODO list. Regarding Exynos5 it is apparently the same IP as in Exynos4. I've just posted a patch enabling CEC module on Exynos5250 (Google Snow) and Exynos5422 (Odroid XU3). Best regards -- Marek Szyprowski, PhD Samsung R Institute Poland
Re: [ANN] HDMI CEC Status Update
On 30.05.2017 08:53, Hans Verkuil wrote: > For those who are interested in HDMI CEC support I made a little status > document that I intend to keep up to date: > > https://hverkuil.home.xs4all.nl/cec-status.txt > > My goal is to get CEC supported for any mainlined HDMI driver where the > hardware > supports CEC. > > If anyone is working on a CEC driver that I don't know already about, just > drop > me an email so I can update the status. Sii8620 HDMI->MHL bridge is on my TODO list. Regarding Exynos5 it is apparently the same IP as in Exynos4. Regards Andrzej
Re: [ANN] HDMI CEC Status Update
On 05/30/17 09:21, Neil Armstrong wrote: > Hi Hans, > > On 05/30/2017 08:53 AM, Hans Verkuil wrote: >> For those who are interested in HDMI CEC support I made a little status >> document that I intend to keep up to date: >> >> https://hverkuil.home.xs4all.nl/cec-status.txt >> >> My goal is to get CEC supported for any mainlined HDMI driver where the >> hardware >> supports CEC. >> >> If anyone is working on a CEC driver that I don't know already about, just >> drop >> me an email so I can update the status. >> >> I also started maintaining a list of DisplayPort to HDMI adapters that >> support >> CEC. If you have one that works and is not on the list, then please let me >> know. >> Seeing /dev/cecX is not enough, some adapters do not connect the CEC pin, so >> they >> won't be able to detect any other CEC devices. See the test instructions in >> the >> cec-status.txt file on how to make sure the adapter has a working CEC pin. I >> plan to do some more testing this week, so hopefully the list will expand. >> >> Thanks! >> >> Hans > > Following our discussion on IRC, > I'm working on a CEC driver for the standalone Amlogic CEC Controller that is > able > to wake up the device from Suspend or Power Off mode by passing infos to the > FW. FYI: the Pulse Eight linux driver has similar support. It has to be enabled via a module option (persistent_config=1). I have no public API for this, mostly because I would first like to get more information about how these things are typically implemented in hardware. Regards, Hans > I initially planned to use the DW-HDMI CEC controller but I recently found > out that > on the Amlogic Meson GX SoCs, the CEC line can be pinmuxed to either an > Amlogic custom > controller or either to a Synopsys IP. > > But it's connected to the Synopsys HDMI-RX controller... so my plan to use > Russell's code > is now dead. > > Anyway, I'll still need to have the CEC notifier suport for DW-HDMI, so I > made a rebase/cleanup > of Russell's driver on 4.12-rc3 : > https://github.com/superna/linux/commits/amlogic/v4.12/rmk-dw-hdmi-cec > The rebase is aligned on dw-hdmi-i2s to use the bridge read/write ops. > > Neil >
Re: [ANN] HDMI CEC Status Update
Hi Hans, On 05/30/2017 08:53 AM, Hans Verkuil wrote: > For those who are interested in HDMI CEC support I made a little status > document that I intend to keep up to date: > > https://hverkuil.home.xs4all.nl/cec-status.txt > > My goal is to get CEC supported for any mainlined HDMI driver where the > hardware > supports CEC. > > If anyone is working on a CEC driver that I don't know already about, just > drop > me an email so I can update the status. > > I also started maintaining a list of DisplayPort to HDMI adapters that support > CEC. If you have one that works and is not on the list, then please let me > know. > Seeing /dev/cecX is not enough, some adapters do not connect the CEC pin, so > they > won't be able to detect any other CEC devices. See the test instructions in > the > cec-status.txt file on how to make sure the adapter has a working CEC pin. I > plan to do some more testing this week, so hopefully the list will expand. > > Thanks! > > Hans Following our discussion on IRC, I'm working on a CEC driver for the standalone Amlogic CEC Controller that is able to wake up the device from Suspend or Power Off mode by passing infos to the FW. I initially planned to use the DW-HDMI CEC controller but I recently found out that on the Amlogic Meson GX SoCs, the CEC line can be pinmuxed to either an Amlogic custom controller or either to a Synopsys IP. But it's connected to the Synopsys HDMI-RX controller... so my plan to use Russell's code is now dead. Anyway, I'll still need to have the CEC notifier suport for DW-HDMI, so I made a rebase/cleanup of Russell's driver on 4.12-rc3 : https://github.com/superna/linux/commits/amlogic/v4.12/rmk-dw-hdmi-cec The rebase is aligned on dw-hdmi-i2s to use the bridge read/write ops. Neil