IR encoders and use for IR wakeup

This series introduces IR encoders and also makes winbond-cir and nuvoton-cir use the sysfs filter wakeup interface for programmable IR wakeup.

To program hauppauge rc-5 remote power button for wakeup:

	cd /sys/class/rc/rc0
	echo rc-5 > wakeup_protocols
	echo 0x1e3d > wakeup_filter
	echo 0xffff > wakeup_filter_mask

Note that the wakeup API can change due to discussion[2].

Changes since v5:
- fixed issue in img-ir filter code (thanks James)
- nec32 issue fixed and verified against liquid tivo remote
- renames space distance to pulse length
- made all timing structs const
- all encoders round-trip over rc-loopback

Changes since v4:
- ImgTec now also uses wakeup_protocols; all rc drivers which do wakeup now use the same sysfs interface
- Implemented all IR encoders except for xmp for which I cannot find useful documentation
- ir_raw_encode_scancode() now takes u32 scancode, rather than a rc_scancode_filter, since it cannot encode a mask.
- All encoders have been tested extensively by round-tripping over rc-loopback and generating random scancodes. No problems found other than known nec32 issue[1].
- winbond-cir has seen more testing

[1] https://www.mail-archive.com/[email protected]/msg104623.html
[2] https://www.mail-archive.com/[email protected]/msg106159.html

Antti Seppälä (3):
[media] rc: rc-ir-raw: Add Manchester encoder (phase encoder) helper [media] rc: ir-rc6-decoder: Add encode capability
[media] rc: nuvoton-cir: Add support wakeup via sysfs filter callback

James Hogan (6):
[media] rc: rc-ir-raw: Add scancode encoder callback [media] rc: rc-ir-raw: Add pulse-distance modulation helper [media] rc: ir-rc5-decoder: Add encode capability [media] rc: ir-nec-decoder: Add encode capability [media] rc: rc-core: Add support for encode_wakeup drivers [media] rc: rc-loopback: Add loopback of filter scancodes

Sean Young (9):
[media] rc: change wakeup_protocols to list all protocol variants [media] rc: Add scancode validation
[media] rc: unify nec32 protocol scancode format [media] winbond-cir: use sysfs wakeup filter
[media] rc: raw IR drivers cannot handle cec, unknown or other [media] rc: ir-jvc-decoder: Add encode capability [media] rc: ir-sanyo-decoder: Add encode capability [media] rc: ir-sharp-decoder: Add encode capability [media] rc: ir-sony-decoder: Add encode capability

 Documentation/ABI/testing/sysfs-class-rc       |  14 +-
 Documentation/media/uapi/rc/rc-sysfs-nodes.rst |  13 +-
 drivers/hid/hid-picolcd_cir.c                  |   2 +-
 drivers/media/common/siano/smsir.c             |   2 +-
 drivers/media/pci/cx23885/cx23885-input.c      |  14 +-
 drivers/media/rc/ene_ir.c                      |   2 +-
 drivers/media/rc/fintek-cir.c                  |   2 +-
 drivers/media/rc/gpio-ir-recv.c                |   2 +-
 drivers/media/rc/igorplugusb.c                 |   4 +-
 drivers/media/rc/iguanair.c                    |   2 +-
 drivers/media/rc/img-ir/img-ir-hw.c            |  13 +-
 drivers/media/rc/img-ir/img-ir-nec.c           |  21 +-
 drivers/media/rc/img-ir/img-ir-sony.c          |  26 +-
 drivers/media/rc/ir-hix5hd2.c                  |   2 +-
 drivers/media/rc/ir-jvc-decoder.c              |  39 +++
 drivers/media/rc/ir-nec-decoder.c              |  86 ++++++-
 drivers/media/rc/ir-rc5-decoder.c              |  97 +++++++
 drivers/media/rc/ir-rc6-decoder.c              | 117 +++++++++
 drivers/media/rc/ir-sanyo-decoder.c            |  43 ++++
 drivers/media/rc/ir-sharp-decoder.c            |  50 ++++
 drivers/media/rc/ir-sony-decoder.c             |  48 ++++
 drivers/media/rc/ite-cir.c                     |   2 +-
 drivers/media/rc/keymaps/rc-tivo.c             |  86 +++----
 drivers/media/rc/mceusb.c                      |   2 +-
 drivers/media/rc/meson-ir.c                    |   2 +-
 drivers/media/rc/nuvoton-cir.c                 | 122 +++++++--
 drivers/media/rc/rc-core-priv.h                | 107 ++++++++
 drivers/media/rc/rc-ir-raw.c                   | 246 +++++++++++++++++-
 drivers/media/rc/rc-loopback.c                 |  41 ++-
 drivers/media/rc/rc-main.c                     | 336 ++++++++++++++++++++-----
 drivers/media/rc/redrat3.c                     |   2 +-
 drivers/media/rc/serial_ir.c                   |   2 +-
 drivers/media/rc/st_rc.c                       |   2 +-
 drivers/media/rc/streamzap.c                   |   2 +-
 drivers/media/rc/sunxi-cir.c                   |   2 +-
 drivers/media/rc/ttusbir.c                     |   2 +-
 drivers/media/rc/winbond-cir.c                 | 259 +++++++++----------
 drivers/media/usb/dvb-usb-v2/rtl28xxu.c        |   2 +-
 drivers/media/usb/dvb-usb/technisat-usb2.c     |   2 +-
 include/media/rc-core.h                        |  17 +-
 include/media/rc-map.h                         |  19 ++
 41 files changed, 1538 insertions(+), 316 deletions(-)

2.9.3