Hi,
First of all - thank you so much for your comments to the two previous versions of this RFC. This is the third version of the HDMI CEC framework patches.
In this version I have introduced a promiscuous mode in which all messages are forwarded to the userspace. This is independent of parsing of the messages, thus the key codes will be interpreted and sent as input events. This mode can be used to eavesdrop on the messages transferred on the bus. This can be used for e.g. to debug or listen look how other hardware communicates over the bus.
The original cover letter follows the changes summary.
Changes since v2 ===============- - added promiscuous mode - added new key codes to the input framework - add vendor ID reporting - add the possibility to clear assigned logical addresses - cleanup of the rc cec map
Changes since v1 ================ - documentation edited and moved to the Documentation folder - added key up/down message handling - add missing CEC commands to the cec.h file
Original cover letter =====================
Hi,
The work on a common CEC framework was started over three years ago by Hans Verkuil. Unfortunately the work has stalled. As I have received the task of creating a driver for the CEC interface module present on the Exynos range of SoCs, I got in touch with Hans. He repied that the work stalled due to his lack of time.
The driver was done in the most part and there were only minor fixes that needed to be implemented. I would like to bring back the discussion on a common CEC interface framework.
There are a few things that were still left as TODO, I think they might need some discussion - for instance the way how the remote controls should be handled.
Best wishes, Kamil Debski
Original RFC by Hans Verkuil/Martin Bugge ========================================= https://www.mail-archive.com/linux-media@vger.kernel.org/msg28735.html
Hans Verkuil (3): v4l2-subdev: add cec ops. adv7604: add cec support. adv7511: add cec support.
Kamil Debski (6): dts: add hdmi-cec to to pinctrl definitions dts: add s5p-cec to exynos4412-odroidu3 Input: add key codes specific to the HDMI CEC bus rc: add a map for devices communicating over the HDMI CEC bus cec: add new driver for cec support. s5p-cec: Add s5p-cec driver
Documentation/cec.txt | 321 ++++++ arch/arm/boot/dts/exynos4412-odroid-common.dtsi | 7 + arch/arm/boot/dts/exynos4412-odroidu3.dts | 13 + drivers/media/Kconfig | 6 + drivers/media/Makefile | 2 + drivers/media/cec.c | 1158 ++++++++++++++++++++ drivers/media/i2c/adv7511.c | 325 +++++- drivers/media/i2c/adv7604.c | 182 +++ drivers/media/platform/Kconfig | 7 + drivers/media/platform/Makefile | 1 + drivers/media/platform/s5p-cec/Makefile | 4 + drivers/media/platform/s5p-cec/exynos_hdmi_cec.h | 37 + .../media/platform/s5p-cec/exynos_hdmi_cecctrl.c | 208 ++++ drivers/media/platform/s5p-cec/regs-cec.h | 96 ++ drivers/media/platform/s5p-cec/s5p_cec.c | 290 +++++ drivers/media/platform/s5p-cec/s5p_cec.h | 113 ++ drivers/media/rc/keymaps/Makefile | 1 + drivers/media/rc/keymaps/rc-cec.c | 144 +++ drivers/media/rc/rc-main.c | 1 + include/media/adv7511.h | 6 +- include/media/cec.h | 137 +++ include/media/rc-core.h | 1 + include/media/rc-map.h | 5 +- include/media/v4l2-subdev.h | 8 + include/uapi/linux/cec.h | 283 +++++ include/uapi/linux/input.h | 12 + 26 files changed, 3359 insertions(+), 9 deletions(-) create mode 100644 Documentation/cec.txt create mode 100644 drivers/media/cec.c create mode 100644 drivers/media/platform/s5p-cec/Makefile create mode 100644 drivers/media/platform/s5p-cec/exynos_hdmi_cec.h create mode 100644 drivers/media/platform/s5p-cec/exynos_hdmi_cecctrl.c create mode 100644 drivers/media/platform/s5p-cec/regs-cec.h create mode 100644 drivers/media/platform/s5p-cec/s5p_cec.c create mode 100644 drivers/media/platform/s5p-cec/s5p_cec.h create mode 100644 drivers/media/rc/keymaps/rc-cec.c create mode 100644 include/media/cec.h create mode 100644 include/uapi/linux/cec.h