Hi all, The tenth version of this patchset addresses comments I received from Russell King and various bug fixes and enhancements as the result of more testing. The cec.txt has been updated, but before I can make the final version there are three areas that I want to look at more closely: 1) What to do if a cable is disconnected and reconnected for a source: should the CEC adapter be disabled and re-enabled? Which means that you need to reconfigure. Or just update the physical address from the EDID (if necessary)? I think the latter, but I need to analyze this more closely. 2) I am not happy with the event mechanism. It's OK for messages, but for other events it is awkward. 3) The status field gives insufficient information and I want to reorganize that for the next version. The cec-ctl and cec-compliance utilities used to test the CEC framework can be found here: http://git.linuxtv.org/cgit.cgi/hverkuil/v4l-utils.git/log/?h=cec Best regards, Hans Changes since v9 ================ - Updated cec.txt - Added a promiscuous capability to signal those adapters that can monitor all CEC traffic, not just directed and broadcast messages. I have one adapter that can do this. Added code in the framework to handle such messages correctly. - The status field is now value and no longer a bitmask. - Renamed the kernel config from CEC to MEDIA_CEC - The adap_transmit() callback now has a retries argument. - Use the new CEC_MAX_MSG_SIZE define instead of hardcoding it as 16 - Add support to wait for a reply after a broadcast message: this was forbidden, but it is a valid use-case. - Make sure you can't send a message to yourself. - Waiting for a transmit to succeed would never timeout (and couldn't be interrupted). Fixed. - The message status was not updated correctly if it was CEC_MSG_FEATURE_ABORTed. - Fixed a nasty kernel oops when deleting a cec adapter. - Removed the owner check: the module owner is NULL if it is compiled into the kernel instead of as a module. - Added separate register/unregister calls: this is safer and actually made it possible to drop the ugly 'cec_ready' v4l2_subdev op. Suggested by Russell, and that was a good idea. - Added missing support for 32-bit to 64-bit ioctl conversion. - Move the v4l2_subdev cec ops into a v4l2_subdev_cec_ops struct. Changes since v8 ================ - Addressed the comments Russell King made about how the cec character devices should be allocated/freed. - Updated the DocBook documentation. Changes since v7 ================ - I thought that the core thread could handle out-of-order messages, but that turned out to be wrong. After careful analysis I realized that I had to rewrite this part in cec.c in order to make it work. - Added new CEC-specific keys to input.h and use them in the CEC rc keymap. Replaced KEY_PLAY/PAUSE/STOP with KEY_PLAYCD/PAUSECD/STOPCD to clarify that these are media operations and not the Pause key on the keyboard. - Added CEC_PHYS_ADDR_INVALID (0xffff) - Added monitor support to monitor CEC traffic - Replaced CAP_TRANSMIT and CAP_RECEIVE by a single CAP_IO. - Replaced CAP_CDC by CAP_CDC_HPD since this only applies to the HPD part of the CDC messages. - Add CAP_IS_SOURCE. - Add ninputs field to cec_caps to export the number of inputs of the device. - Drop CEC_LOG_ADDRS_FL_HANDLE_MSGS and the flags field (see next change for more info). - Add CEC_CLAIM and CEC_RELEASE to explicitly start/stop processing CEC messages. This also implies ownership of the CEC interface, so other filehandles can only receive but not transmit. - Reworked event handling: report adapter state changes, input changes and if the message receive queue is full. - cec-funcs.h: added CDC HEC support. - Renamed G/S_ADAP ioctls to ADAP_G/S: this made it clearer which ioctls deal with the adapter configuration and which deal with CEC messages/events. - Clarified which CEC messages are passed on to userspace and which aren't. Specifically if CAP_ARC is set, then all ARC messages are handled by the kernel. If CAP_CDC_HPD is set, then all CDC hotplug messages are handled by the kernel. Otherwise these messages are passed on to userspace. Changes since v6 ================ - added cec-funcs.h to provide wrapper functions that fill in the cec_msg struct. This header is needed both by the kernel and by applications. - fix a missing rc_unregister_device call. - added CEC support for the adv7842 and cobalt drivers. - added CEC operand defines. Rename CEC message defines to CEC_MSG_ and operand defines now use CEC_OP_. - the CEC_VERSION defines are dropped since we now have the CEC_OP_VERSION defines. - ditto: CEC_PRIM_DEVTYPE_ is now CEC_OP_PRIM_DEVTYPE. - ditto: CEC_FL_ALL_DEVTYPE_ is now CEC_OP_ALL_DEVTYPE. - cec-ioc-g-adap-log-addrs.xml: document cec_versions field. - cec-ioc-g-caps.xml: drop vendor_id and version fields. - add MAINTAINERS entry. - add CDC support (not yet fully functional). - add a second debug level for message debugging. - fix a nasty kernel Oops in cec_transmit_msg while waiting for transmit completion (adap->tx_queue[idx].func wasn't set to NULL). - add support for CEC_MSG_REPORT_FEATURES (CEC 2.0 only). - correctly abort unsupported messages. - add support for the device power status feature. - add support for the audio return channel (preliminary). - add support for the CDC hotplug message (preliminary). - added osd_name to struct cec_log_addrs. - reported physical addresses are stored internally. - fix enabling/disabling the CEC adapter (internal fields weren't cleared correctly). - zero reserved fields. - return an error if you try to receive/transmit and the adapter isn't configured. - when creating the adapter provide the owner module and the parent device. - add a CEC_VENDOR_ID_NONE define to signal if no vendor ID was set. - add new capabilities: RC (remote control), ARC (audio return channel) and CDC (Capability Discovery and Control). - applications that want to handle messages for a logical address need to set the CEC_LOG_ADDRS_FL_HANDLE_MSGS flag. Otherwise the CEC core will be the one handling all messages. - Each logical address has its own all_device_types value. So this should be an array, not a single value. - I'm sure I've forgotten some changes... Changes since v5 ================ - drop struct cec_timeval in favour of a __u64 that keeps the timestamp in ns - remove userspace documentation from Documentation/cec.txt as userspace API is described in the DocBook - add missing documentation for the passthrough mode to the DocBook - add information about the number of events that can be queued - fix misspelling of reply - fix behaviour of posting an event in cec_received_msg, such that the behaviour is consistent with the documentation Changes since v4 ================ - add sequence numbering to transmitted messages - add sequence number handling to event hanlding - add passthrough mode - change reserved field sizes - fixed CEC version defines and addec CEC 2.0 commands - add DocBook documentation Changes since v3 ================ - remove the promiscuous mode - rewrite the devicetree patches - fixes, expansion and partial rewrite of the documentation - reorder of API structures and addition of reserved fields - use own struct to report time (32/64 bit safe) - fix of handling events - add cec.h to include/uapi/linux/Kbuild - fixes in the adv76xx driver (add missing methods, change adv7604 to adv76xx) - cleanup of debug messages in s5p-cec driver - remove non necessary claiming of a gpio in the s5p-cec driver - cleanup headers of the s5p-cec driver 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 Background ========== 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 replied that the work stalled due to his lack of time. Original RFC by Hans Verkuil/Martin Bugge ========================================= https://www.mail-archive.com/linux-media@xxxxxxxxxxxxxxx/msg28735.html Hans Verkuil (10): input.h: add BUS_CEC type cec: add HDMI CEC framework cec: add compat32 ioctl support cec.txt: add CEC framework documentation DocBook/media: add CEC documentation v4l2-subdev: add HDMI CEC ops cec: adv7604: add cec support. cec: adv7842: add cec support cec: adv7511: add cec support. cobalt: add cec support Kamil Debski (6): dts: exynos4*: add HDMI CEC pin definition to pinctrl dts: exynos4: add node for the HDMI CEC device dts: exynos4412-odroid*: enable the HDMI CEC device HID: add HDMI CEC specific keycodes rc: Add HDMI CEC protocol handling cec: s5p-cec: Add s5p-cec driver Documentation/DocBook/device-drivers.tmpl | 3 + Documentation/DocBook/media/Makefile | 2 + Documentation/DocBook/media/v4l/biblio.xml | 10 + Documentation/DocBook/media/v4l/cec-api.xml | 76 + Documentation/DocBook/media/v4l/cec-func-close.xml | 59 + Documentation/DocBook/media/v4l/cec-func-ioctl.xml | 73 + Documentation/DocBook/media/v4l/cec-func-open.xml | 94 + Documentation/DocBook/media/v4l/cec-func-poll.xml | 89 + .../DocBook/media/v4l/cec-ioc-adap-g-caps.xml | 167 ++ .../DocBook/media/v4l/cec-ioc-adap-g-log-addrs.xml | 306 +++ .../DocBook/media/v4l/cec-ioc-adap-g-phys-addr.xml | 80 + .../DocBook/media/v4l/cec-ioc-adap-g-state.xml | 87 + .../DocBook/media/v4l/cec-ioc-adap-g-vendor-id.xml | 70 + Documentation/DocBook/media/v4l/cec-ioc-claim.xml | 71 + .../DocBook/media/v4l/cec-ioc-dqevent.xml | 208 +++ .../DocBook/media/v4l/cec-ioc-g-monitor.xml | 86 + .../DocBook/media/v4l/cec-ioc-g-passthrough.xml | 81 + .../DocBook/media/v4l/cec-ioc-receive.xml | 190 ++ Documentation/DocBook/media_api.tmpl | 6 +- Documentation/cec.txt | 326 ++++ .../devicetree/bindings/media/s5p-cec.txt | 31 + MAINTAINERS | 12 + arch/arm/boot/dts/exynos4.dtsi | 12 + arch/arm/boot/dts/exynos4210-pinctrl.dtsi | 7 + arch/arm/boot/dts/exynos4210-universal_c210.dts | 4 + arch/arm/boot/dts/exynos4x12-pinctrl.dtsi | 7 + drivers/media/Kconfig | 7 + drivers/media/Makefile | 2 + drivers/media/cec.c | 1962 ++++++++++++++++++++ drivers/media/i2c/adv7511.c | 364 +++- drivers/media/i2c/adv7604.c | 241 ++- drivers/media/i2c/adv7842.c | 255 ++- drivers/media/pci/cobalt/Kconfig | 1 + drivers/media/pci/cobalt/cobalt-driver.c | 108 +- drivers/media/pci/cobalt/cobalt-driver.h | 2 + drivers/media/pci/cobalt/cobalt-irq.c | 3 + drivers/media/pci/cobalt/cobalt-v4l2.c | 126 +- drivers/media/pci/cobalt/cobalt-v4l2.h | 2 + drivers/media/platform/Kconfig | 12 + drivers/media/platform/Makefile | 1 + drivers/media/platform/s5p-cec/Makefile | 2 + 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 | 289 +++ drivers/media/platform/s5p-cec/s5p_cec.h | 76 + drivers/media/rc/keymaps/Makefile | 1 + drivers/media/rc/keymaps/rc-cec.c | 174 ++ drivers/media/rc/rc-main.c | 1 + fs/compat_ioctl.c | 19 + include/media/adv7511.h | 6 +- include/media/cec.h | 182 ++ include/media/rc-core.h | 1 + include/media/rc-map.h | 5 +- include/media/v4l2-subdev.h | 14 + include/uapi/linux/Kbuild | 2 + include/uapi/linux/cec-funcs.h | 1771 ++++++++++++++++++ include/uapi/linux/cec.h | 884 +++++++++ include/uapi/linux/input.h | 29 + 59 files changed, 8979 insertions(+), 61 deletions(-) create mode 100644 Documentation/DocBook/media/v4l/cec-api.xml create mode 100644 Documentation/DocBook/media/v4l/cec-func-close.xml create mode 100644 Documentation/DocBook/media/v4l/cec-func-ioctl.xml create mode 100644 Documentation/DocBook/media/v4l/cec-func-open.xml create mode 100644 Documentation/DocBook/media/v4l/cec-func-poll.xml create mode 100644 Documentation/DocBook/media/v4l/cec-ioc-adap-g-caps.xml create mode 100644 Documentation/DocBook/media/v4l/cec-ioc-adap-g-log-addrs.xml create mode 100644 Documentation/DocBook/media/v4l/cec-ioc-adap-g-phys-addr.xml create mode 100644 Documentation/DocBook/media/v4l/cec-ioc-adap-g-state.xml create mode 100644 Documentation/DocBook/media/v4l/cec-ioc-adap-g-vendor-id.xml create mode 100644 Documentation/DocBook/media/v4l/cec-ioc-claim.xml create mode 100644 Documentation/DocBook/media/v4l/cec-ioc-dqevent.xml create mode 100644 Documentation/DocBook/media/v4l/cec-ioc-g-monitor.xml create mode 100644 Documentation/DocBook/media/v4l/cec-ioc-g-passthrough.xml create mode 100644 Documentation/DocBook/media/v4l/cec-ioc-receive.xml create mode 100644 Documentation/cec.txt create mode 100644 Documentation/devicetree/bindings/media/s5p-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-funcs.h create mode 100644 include/uapi/linux/cec.h -- 2.6.2 -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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