On 06/01/2018 10:19 AM, Neil Armstrong wrote:
> Hi All,
>
> The new Google "Fizz" Intel-based ChromeOS device is gaining CEC support
> through it's Embedded Controller, to enable the Linux CEC Core to communicate
> with it and get the CEC Physical Address from the correct HDMI Connector, the
> following must be added/changed:
> - Add the CEC sub-device registration in the ChromeOS EC MFD Driver
> - Add the CEC related commands and events definitions into the EC MFD driver
> - Add a way to get a CEC notifier with it's (optional) connector name
> - Add the CEC notifier to the i915 HDMI driver
> - Add the proper ChromeOS EC CEC Driver
>
> The CEC notifier with the connector name is the tricky point, since even on
> Device-Tree platforms, there is no way to distinguish between multiple HDMI
> connectors from the same DRM driver. The solution I implemented is pretty
> simple and only adds an optional connector name to eventually distinguish
> an HDMI connector notifier from another if they share the same device.
This looks good to me, which brings me to the next question: how to merge
this?
It touches on three subsystems (media, drm, mfd), so that makes this
tricky.
I think there are two options: either the whole series goes through the
media tree, or patches 1+2 go through drm and 3-6 through media. If there
is a high chance of conflicts in the mfd code, then it is also an option to
have patches 3-6 go through the mfd subsystem.
Any opinions?
Regards,
Hans
>
> Feel free to comment this patchset !
>
> Changes since v6:
> - Added stable identifier comment in intel_display.h
> - Renamed to cec_notifier in intel_hdmi.c/intel_drv.h
> - Added Acked-by/Reviewed-By tags
>
> Changes since v5:
> - Small fixups on include/linux/mfd/cros_ec_commands.h
> - Fixed on cros-ec-cec driver accordingly
> - Added Reviewed-By tags
>
> Changes since v4:
> - Split patch 3 to move the mkbp event size change into a separate patch
>
> Changes since v3 (incorrectly reported as v2):
> - Renamed "Chrome OS" to "ChromeOS"
> - Updated cros_ec_commands.h new structs definitions to kernel doc format
> - Added Reviewed-By tags
>
> Changes since v2:
> - Add i915 port_identifier() and use this stable name as cec_notifier conn
> name
> - Fixed and cleaned up the CEC commands and events handling
> - Rebased the CEC sub-device registration on top of Enric's serie
> - Fixed comments typo on cec driver
> - Protected the DMI match only with PCI and DMI Kconfigs
>
> Changes since v1:
> - Added cec_notifier_put to intel_hdmi
> - Fixed all small reported issues on the EC CEC driver
> - Moved the cec_notifier_get out of the #if .. #else .. #endif
>
> Changes since RFC:
> - Moved CEC sub-device registration after CEC commands and events
> definitions patch
> - Removed get_notifier_get_byname
> - Added CEC_CORE select into i915 Kconfig
> - Removed CEC driver fallback if notifier is not configured on HW, added
> explicit warn
> - Fixed CEC core return type on error
> - Moved to cros-ec-cec media platform directory
> - Use bus_find_device() to find the pci i915 device instead of
> get_notifier_get_byname()
> - Fix Logical Address setup
> - Added comment about HW support
> - Removed memset of msg structures
>
> Neil Armstrong (6):
> media: cec-notifier: Get notifier by device and connector name
> drm/i915: hdmi: add CEC notifier to intel_hdmi
> mfd: cros-ec: Increase maximum mkbp event size
> mfd: cros-ec: Introduce CEC commands and events definitions.
> mfd: cros_ec_dev: Add CEC sub-device registration
> media: platform: Add ChromeOS EC CEC driver
>
> drivers/gpu/drm/i915/Kconfig | 1 +
> drivers/gpu/drm/i915/intel_display.h | 24 ++
> drivers/gpu/drm/i915/intel_drv.h | 2 +
> drivers/gpu/drm/i915/intel_hdmi.c | 13 +
> drivers/media/cec/cec-notifier.c | 11 +-
> drivers/media/platform/Kconfig | 11 +
> drivers/media/platform/Makefile | 2 +
> drivers/media/platform/cros-ec-cec/Makefile | 1 +
> drivers/media/platform/cros-ec-cec/cros-ec-cec.c | 347
> +++++++++++++++++++++++
> drivers/mfd/cros_ec_dev.c | 16 ++
> drivers/platform/chrome/cros_ec_proto.c | 40 ++-
> include/linux/mfd/cros_ec.h | 2 +-
> include/linux/mfd/cros_ec_commands.h | 100 +++++++
> include/media/cec-notifier.h | 27 +-
> 14 files changed, 581 insertions(+), 16 deletions(-)
> create mode 100644 drivers/media/platform/cros-ec-cec/Makefile
> create mode 100644 drivers/media/platform/cros-ec-cec/cros-ec-cec.c
>
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