Re: [PATCH v3 0/4] Add Meson 8b / GXBB support to the IR driver

[Kevin Hilman <khilman@baylibre.com>]

Hi Martin,

On Tue, Jun 28, 2016 at 12:17 PM, Martin Blumenstingl
<martin.blumenstingl@googlemail.com> wrote:
> 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.

I tried this on meson-gxbb-p200 and I'm not seeing any button press
events with evtest or ir-keytable when using the Amlogic remote that
came with the board.  Below is the register dump you requested on IRC:

[    1.068347] Registered IR keymap rc-empty
[    1.072422] input: meson-ir as
/devices/platform/soc/c8100000.aobus/c8100580.ir/rc/rc0/input0
[    1.080814] rc rc0: meson-ir as
/devices/platform/soc/c8100000.aobus/c8100580.ir/rc/rc0
[    1.088839] input: MCE IR Keyboard/Mouse (meson-ir) as
/devices/virtual/input/input1
[    1.096519] rc rc0: lirc_dev: driver ir-lirc-codec (meson-ir)
registered at minor = 0
[    1.104119] meson-ir c8100580.ir: receiver initialized
[    1.109172] IR: reg 0x00 = 0x01d801ac
[    1.112795] IR: reg 0x04 = 0x00f800ca
[    1.116416] IR: reg 0x08 = 0x007a0066
[    1.120037] IR: reg 0x0c = 0x0044002c
[    1.123660] IR: reg 0x10 = 0x70fa0009
[    1.127278] IR: reg 0x14 = 0x00000000
[    1.130907] IR: reg 0x18 = 0x08915c00
[    1.134527] IR: reg 0x1c = 0x00009f44
[    1.138152] IR: reg 0x20 = 0x00000002

Kevin