Hi Mauro, This series adds support for CEC error injection via debugfs. It's fantastic for verifying CEC implementations. We (Cisco) have been developing and testing this for quite some time now and it has been incredibly useful for low-level CEC verification. And cheap too :-) See the section "Making a CEC debugger" here: https://hverkuil.home.xs4all.nl/cec-status.txt Patches 1-6 add the error injection support and documentation. The 7th patch improves the status log for the CEC pin framework. It now reports when and how many incorrect bits were received. The final patch improves CEC pin event handling: increasing the size of an internal FIFO (it was too small, sometimes causing events to be lost) and correctly reporting to userspace when events were lost, ensuring that userspace at least knows that this happened. Regards, Hans The following changes since commit 3f127ce11353fd1071cae9b65bc13add6aec6b90: media: em28xx-cards: fix em28xx_duplicate_dev() (2018-03-08 06:06:51 -0500) are available in the Git repository at: git://linuxtv.org/hverkuil/media_tree.git cec for you to fetch changes up to ca5b5b26973e7dca9f1f2f9babbd7afaaf1f9f04: cec: improve CEC pin event handling (2018-03-09 11:09:00 +0100) ---------------------------------------------------------------- Hans Verkuil (8): cec: add core error injection support cec-core.rst: document the error injection ops cec-pin: create cec_pin_start_timer() function cec-pin-error-inj: parse/show error injection cec-pin: add error injection support cec-pin-error-inj.rst: document CEC Pin Error Injection cec-pin: improve status log cec: improve CEC pin event handling Documentation/media/cec-drivers/cec-pin-error-inj.rst | 322 +++++++++++++++++++++++++++++ Documentation/media/cec-drivers/index.rst | 1 + Documentation/media/kapi/cec-core.rst | 72 ++++++- MAINTAINERS | 1 + drivers/media/cec/Kconfig | 6 + drivers/media/cec/Makefile | 4 + drivers/media/cec/cec-adap.c | 8 +- drivers/media/cec/cec-core.c | 58 ++++++ drivers/media/cec/cec-pin-error-inj.c | 342 +++++++++++++++++++++++++++++++ drivers/media/cec/cec-pin-priv.h | 134 +++++++++++- drivers/media/cec/cec-pin.c | 664 +++++++++++++++++++++++++++++++++++++++++++++++++++++------- drivers/media/platform/vivid/vivid-cec.c | 8 +- include/media/cec.h | 12 +- 13 files changed, 1540 insertions(+), 92 deletions(-) create mode 100644 Documentation/media/cec-drivers/cec-pin-error-inj.rst create mode 100644 drivers/media/cec/cec-pin-error-inj.c
