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| author |   Hans de Goede <hdegoede@redhat.com> | 2021-10-05 22:23:14 +0200 |
|---|---|---|
| committer | Hans de Goede <hdegoede@redhat.com> | 2021-10-14 13:12:21 +0200 |
| commit | a1a98689301b9af0313e4c1ba44558e8b67ff76e (patch) | |
| tree | 90193340cfdbb1f68176948c2ce9f7afade41253 /drivers/gpu/drm/Makefile | |
| parent | drm/connector: Add support for privacy-screen properties (v4) (diff) | |
| download | linux-dev-a1a98689301b9af0313e4c1ba44558e8b67ff76e.tar.xz linux-dev-a1a98689301b9af0313e4c1ba44558e8b67ff76e.zip | |
drm: Add privacy-screen class (v4)
On some new laptops the LCD panel has a builtin electronic privacy-screen.
We want to export this functionality as a property on the drm connector
object. But often this functionality is not exposed on the GPU but on some
other (ACPI) device.
This commit adds a privacy-screen class allowing the driver for these
other devices to register themselves as a privacy-screen provider; and
allowing the drm/kms code to get a privacy-screen provider associated
with a specific GPU/connector combo.
Changes in v2:
- Make CONFIG_DRM_PRIVACY_SCREEN a bool which controls if the drm_privacy
code gets built as part of the main drm module rather then making it
a tristate which builds its own module.
- Add a #if IS_ENABLED(CONFIG_DRM_PRIVACY_SCREEN) check to
drm_privacy_screen_consumer.h and define stubs when the check fails.
Together these 2 changes fix several dependency issues.
- Remove module related code now that this is part of the main drm.ko
- Use drm_class as class for the privacy-screen devices instead of
adding a separate class for this
Changes in v3:
- Make the static inline drm_privacy_screen_get_state() stub set sw_state
and hw_state to PRIVACY_SCREEN_DISABLED to squelch an uninitialized
variable warning when CONFIG_DRM_PRIVICAY_SCREEN is not set
Changes in v4:
- Make drm_privacy_screen_set_sw_state() skip calling out to the hw if
hw_state == new_sw_state
Reviewed-by: Emil Velikov <emil.l.velikov@gmail.com>
Reviewed-by: Lyude Paul <lyude@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20211005202322.700909-3-hdegoede@redhat.com
Diffstat (limited to 'drivers/gpu/drm/Makefile')
| -rw-r--r-- | drivers/gpu/drm/Makefile | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/gpu/drm/Makefile b/drivers/gpu/drm/Makefile index 0dff40bb863c..788fc37096f6 100644 --- a/drivers/gpu/drm/Makefile +++ b/drivers/gpu/drm/Makefile @@ -32,6 +32,7 @@ drm-$(CONFIG_OF) += drm_of.o drm-$(CONFIG_PCI) += drm_pci.o drm-$(CONFIG_DEBUG_FS) += drm_debugfs.o drm_debugfs_crc.o drm-$(CONFIG_DRM_LOAD_EDID_FIRMWARE) += drm_edid_load.o +drm-$(CONFIG_DRM_PRIVACY_SCREEN) += drm_privacy_screen.o obj-$(CONFIG_DRM_DP_AUX_BUS) += drm_dp_aux_bus.o |