diff options
| author | Rajat Jain <rajatja@google.com> | 2022-01-07 20:02:07 +0100 |
|---|---|---|
| committer | Hans de Goede <hdegoede@redhat.com> | 2022-01-10 12:17:37 +0100 |
| commit | 3fb57847f6ec30e9aa27af7b37aed7a7419d50aa (patch) | |
| tree | cde73bb6ba9b4a3f90651c50884015b2ab8663d5 /drivers/platform/chrome/Kconfig | |
| parent | drm/privacy_screen: Add drvdata in drm_privacy_screen (diff) | |
| download | linux-3fb57847f6ec30e9aa27af7b37aed7a7419d50aa.tar.xz linux-3fb57847f6ec30e9aa27af7b37aed7a7419d50aa.zip | |
platform/chrome: Add driver for ChromeOS privacy-screen
This adds the ACPI driver for the ChromeOS privacy screen that is
present on some chromeos devices.
Note that ideally, we'd want this privacy screen driver to be probed
BEFORE the drm probe in order to avoid a drm probe deferral:
https://hansdegoede.livejournal.com/25948.html
In practise, I found that ACPI drivers are bound to their devices AFTER
the drm probe on chromebooks. So on chromebooks with privacy-screen,
this patch along with the other one in this series results in a probe
deferral of about 250ms for i915 driver. However, it did not result in
any user noticeable delay of splash screen in my personal experience.
In future if this probe deferral turns out to be an issue, we can
consider turning this ACPI driver into something that is probed
earlier than the drm drivers.
Signed-off-by: Rajat Jain <rajatja@google.com>
Reviewed-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Acked-by: Benson Leung <bleung@chromium.org>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220107190208.95479-2-rajatja@google.com
Diffstat (limited to 'drivers/platform/chrome/Kconfig')
| -rw-r--r-- | drivers/platform/chrome/Kconfig | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/platform/chrome/Kconfig b/drivers/platform/chrome/Kconfig index ccc23d8686e8..75e93efd669f 100644 --- a/drivers/platform/chrome/Kconfig +++ b/drivers/platform/chrome/Kconfig @@ -243,6 +243,17 @@ config CROS_USBPD_NOTIFY To compile this driver as a module, choose M here: the module will be called cros_usbpd_notify. +config CHROMEOS_PRIVACY_SCREEN + tristate "ChromeOS Privacy Screen support" + depends on ACPI + depends on DRM + select DRM_PRIVACY_SCREEN + help + This driver provides the support needed for the in-built electronic + privacy screen that is present on some ChromeOS devices. When enabled, + this should probably always be built into the kernel to avoid or + minimize drm probe deferral. + source "drivers/platform/chrome/wilco_ec/Kconfig" endif # CHROMEOS_PLATFORMS |