This patch series introduces a new lirc mode, LIRC_MODE_SCANCODE. This allows scancodes to be sent and received. This depends on earlier series which introduces IR encoders.
Hans: do cec devices need a method for sending scancodes and if so, would this be a useful interface? If not, should cec devices not have a lirc char device? With these patches, cec devices will get a lirc char device too. lirc already supports LIRC_MODE_LIRCCODE, but that mode is entirely driver dependant and makes no provision for protocol information. Receiving LIRC_MODE_SCANCODE ---------------------------- If a lirc device has the LIRC_CAN_REC_SCANCODE feature, LIRC_MODE_SCANCODE can be set set using LIRC_SET_REC_MODE ioctl. Now when you read from the device you receive struct lirc_scancode. In this structure you have the scancode, rc_type, and flags. RC_TYPE_* is now in uapi, so now you can see exactly which protocol variant was used. flags might contain LIRC_SCANCODE_FLAGS_TOGGLE (rc5, rc6) or LIRC_SCANCODE_FLAGS_REPEAT (nec). Using this interface, you can see what IR protocol a remote is using. This was not easy to do before. Sending LIRC_MODE_SCANCODE -------------------------- If a lirc device has the LIRC_CAN_SEND_SCANCODE features, LIRC_MODE_SCANCODE can be set using the LIRC_SET_SEND_MODE ioctl. Now you can write struct lirc_scancode. flags should be 0, rc_type to the RC_TYPE_* and the scancode must be set. You can only tranmsit one lirc_scancode at a time. This interface uses the in-kernel IR encoders to work. Using this interface it will be possible to port lirc_zilog to rc-core. This device cannot send raw IR, so it will not use the IR encoders but provide the same userspace interface. Other user-visible changes -------------------------- Now all RC devices will have a lirc char device, including devices which do not produce raw IR. They will be fixed in mode LIRC_MODE_SCANCODE. Sean Young (9): [media] lirc: lirc interface should not be a raw decoder [media] lirc: exorcise struct irctl [media] lirc: use plain kfifo rather than lirc_buffer [media] lirc: implement scancode sending [media] rc: use the correct carrier for scancode transmit [media] rc: auto load encoder if necessary [media] lirc: implement reading scancode [media] lirc: scancode rc devices should have a lirc device too [media] lirc: LIRC_MODE_SCANCODE documentation Documentation/media/uapi/rc/lirc-dev-intro.rst | 21 +- Documentation/media/uapi/rc/lirc-get-features.rst | 14 + drivers/media/rc/Kconfig | 15 +- drivers/media/rc/Makefile | 6 +- drivers/media/rc/ir-jvc-decoder.c | 1 + drivers/media/rc/ir-lirc-codec.c | 336 +++++++++++++-------- drivers/media/rc/ir-nec-decoder.c | 1 + drivers/media/rc/ir-rc5-decoder.c | 1 + drivers/media/rc/ir-rc6-decoder.c | 1 + drivers/media/rc/ir-sanyo-decoder.c | 1 + drivers/media/rc/ir-sharp-decoder.c | 1 + drivers/media/rc/ir-sony-decoder.c | 1 + drivers/media/rc/lirc_dev.c | 339 ++++++++++------------ drivers/media/rc/rc-core-priv.h | 54 +++- drivers/media/rc/rc-ir-raw.c | 49 +++- drivers/media/rc/rc-main.c | 66 +++-- drivers/staging/media/lirc/lirc_sasem.c | 1 - include/media/lirc_dev.h | 25 ++ include/media/rc-core.h | 8 +- include/media/rc-map.h | 52 +--- include/uapi/linux/lirc.h | 66 +++++ 21 files changed, 639 insertions(+), 420 deletions(-) -- 2.9.3 -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
