OK! Looked over all of these patches. Patches 2 and 4 have some comments that should be addressed, but otherwise this series is:
Reviewed-by: Lyude Paul lyude@redhat.com
Let me know when/if you need help pushing this upstream
On Mon, 2021-09-06 at 09:35 +0200, Hans de Goede wrote:
Hi all,
Here is the privacy-screen related code which I last posted in April 2021 To the best of my knowledge there is consensus about / everyone is in agreement with the new userspace API (2 connector properties) this patch-set add (patch 1 of the series).
This is unchanged (except for a rebase on drm-tip), what has changed is that the first userspace consumer of the new properties is now fully ready for merging (it is just waiting for the kernel bits to land first):
- https://gitlab.gnome.org/GNOME/gsettings-desktop-schemas/-/merge_requests/49 - https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1952 - https://gitlab.gnome.org/GNOME/gnome-control-center/-/merge_requests/1032
Having a userspace-consumer of the API fully ready for merging, clears the last blocker for this series. It has already has been reviewed before by Emil Velikov, but it could really do with another review.
The new API works as designed and add the following features to GNOME:
- Showing an OSD notification when the privacy-screen is toggled on/off
through hotkeys handled by the embedded-controller 2. Allowing control of the privacy-screen from the GNOME control-panel, including the on/off slider shown there updating to match the hw-setting when the setting is changed with the control-panel open. 3. Restoring the last user-setting at login
This series consists of a number of different parts:
- A new version of Rajat's privacy-screen connector properties patch,
this adds new userspace API in the form of new properties
- Since on most devices the privacy screen is actually controlled by
some vendor specific ACPI/WMI interface which has a driver under drivers/platform/x86, we need some "glue" code to make this functionality available to KMS drivers. Patches 2-4 add a new privacy-screen class for this, which allows non KMS drivers (and possibly KMS drivers too) to register a privacy-screen device and also adds an interface for KMS drivers to get access to the privacy-screen associated with a specific connector. This is modelled similar to how we deal with e.g. PWMs and GPIOs in the kernel, including separate includes for consumers and providers(drivers).
- Some drm_connector helper functions to keep the actual changes needed
for this in individual KMS drivers as small as possible (patch 5).
- Make the thinkpad_acpi code register a privacy-screen device on
ThinkPads with a privacy-screen (patches 6-8)
- Make the i915 driver export the privacy-screen functionality through
the connector properties on the eDP connector.
I believe that it would be best to merge the entire series, including the thinkpad_acpi changes through drm-misc in one go. As the pdx86 subsys maintainer I hereby give my ack for merging the thinkpad_acpi changes through drm-misc.
There is one small caveat with this series, which it is good to be aware of. The i915 driver will now return -EPROBE_DEFER on Thinkpads with an eprivacy screen, until the thinkpad_acpi driver is loaded. This means that initrd generation tools will need to be updated to include thinkpad_acpi when the i915 driver is added to the initrd. Without this the loading of the i915 driver will be delayed to after the switch to real rootfs.
Regards,
Hans
Hans de Goede (8): drm: Add privacy-screen class (v3) drm/privacy-screen: Add X86 specific arch init code drm/privacy-screen: Add notifier support drm/connector: Add a drm_connector privacy-screen helper functions platform/x86: thinkpad_acpi: Add hotkey_notify_extended_hotkey() helper platform/x86: thinkpad_acpi: Get privacy-screen / lcdshadow ACPI handles only once platform/x86: thinkpad_acpi: Register a privacy-screen device drm/i915: Add privacy-screen support
Rajat Jain (1): drm/connector: Add support for privacy-screen properties (v4)
Documentation/gpu/drm-kms-helpers.rst | 15 + Documentation/gpu/drm-kms.rst | 2 + MAINTAINERS | 8 + drivers/gpu/drm/Kconfig | 4 + drivers/gpu/drm/Makefile | 1 + drivers/gpu/drm/drm_atomic_uapi.c | 4 + drivers/gpu/drm/drm_connector.c | 214 +++++++++ drivers/gpu/drm/drm_drv.c | 4 + drivers/gpu/drm/drm_privacy_screen.c | 468 +++++++++++++++++++ drivers/gpu/drm/drm_privacy_screen_x86.c | 86 ++++ drivers/gpu/drm/i915/display/intel_display.c | 5 + drivers/gpu/drm/i915/display/intel_dp.c | 10 + drivers/gpu/drm/i915/i915_pci.c | 12 + drivers/platform/x86/Kconfig | 2 + drivers/platform/x86/thinkpad_acpi.c | 131 ++++-- include/drm/drm_connector.h | 56 +++ include/drm/drm_privacy_screen_consumer.h | 65 +++ include/drm/drm_privacy_screen_driver.h | 84 ++++ include/drm/drm_privacy_screen_machine.h | 46 ++ 19 files changed, 1175 insertions(+), 42 deletions(-) create mode 100644 drivers/gpu/drm/drm_privacy_screen.c create mode 100644 drivers/gpu/drm/drm_privacy_screen_x86.c create mode 100644 include/drm/drm_privacy_screen_consumer.h create mode 100644 include/drm/drm_privacy_screen_driver.h create mode 100644 include/drm/drm_privacy_screen_machine.h