Newer Amlogic platforms (Meson 8b and GXBB) use a slightly different register layout for their Infrared Remoete Controller. The decoder mode is now configured in another register. Without the changes to the meson-ir driver we are simply getting incorrect "durations" reported from the hardware (because the hardware is not in time measurement aka software decode mode). This problem was also noticed by some people trying to use this on an ODROID-C1 and ODROID-C2 - the workaround there (probably because the datasheets were not publicy available yet at that time) was to switch to ir_raw_event_store_edge (which leaves it up to the kernel to measure the duration of a pulse). See [0] and [1] for the corresponding patches. Changes in v3: - based on the patches of Neil Armstrong - depending on the platform either the old (default) or new registers (this has to be enabled explicitly by using "amlogic,meson8b-ir" or "amlogic,meson-gxbb-ir") - the changes to arch/arm/boot/dts/meson.dtsi are not part of this series anymore, because the size specified there is valid for the Meson 6b version of the IR decoder - Add the IR decoder to meson-gxbb.dtsi and enable it on the supported boards [0] https://github.com/erdoukki/linux-amlogic-1/commit/969b2e2242fb14a13cb651f9a1cf771b599c958b [1] http://forum.odroid.com/viewtopic.php?f=135&t=20504 Martin Blumenstingl (1): ARM64: dts: meson-gxbb: Enable the the IR decoder on supported boards Neil Armstrong (3): dt-bindings: media: meson-ir: Add Meson8b and GXBB compatible strings media: rc: meson-ir: Add support for newer versions of the IR decoder ARM64: meson-gxbb: Add Infrared Remote Controller decoder .../devicetree/bindings/media/meson-ir.txt | 5 +++- .../arm64/boot/dts/amlogic/meson-gxbb-odroidc2.dts | 4 +++ arch/arm64/boot/dts/amlogic/meson-gxbb-p20x.dtsi | 4 +++ .../boot/dts/amlogic/meson-gxbb-vega-s95.dtsi | 4 +++ arch/arm64/boot/dts/amlogic/meson-gxbb.dtsi | 7 ++++++ drivers/media/rc/meson-ir.c | 29 ++++++++++++++++++---- 6 files changed, 47 insertions(+), 6 deletions(-) -- 2.9.0 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
