Hi Rajat, Thanks for your changes here. On Fri, Jan 07, 2022 at 11:02:08AM -0800, Rajat Jain wrote: > Add a static entry in the x86 table, to detect and wait for > privacy-screen on some ChromeOS platforms. > > Please note that this means that if CONFIG_CHROMEOS_PRIVACY_SCREEN is > enabled, and if "GOOG0010" device is found in ACPI, then the i915 probe > shall return EPROBE_DEFER until a platform driver actually registers the > privacy-screen: https://hansdegoede.livejournal.com/25948.html > > Signed-off-by: Rajat Jain <rajatja@xxxxxxxxxx> > Reviewed-by: Hans de Goede <hdegoede@xxxxxxxxxx> Hi Hans, Since this change depends on the privacy screen changes staged for v5.17, I'm OK as platform/chrome maintainer to have this go through the drm tree. Acked-By: Benson Leung <bleung@xxxxxxxxxxxx> > --- > v5: * Add Hans' "Reviewed by" > v4: * Simplify the detect_chromeos_privacy_screen() function > * Don't change the existing print statement > v3: * Remove the pr_info() from detect_chromeos_privacy_screen(), instead > enhance the one already present in drm_privacy_screen_lookup_init() > v2: * Use #if instead of #elif > * Reorder the patches in the series. > * Rebased on drm-tip > > drivers/gpu/drm/drm_privacy_screen_x86.c | 17 +++++++++++++++++ > 1 file changed, 17 insertions(+) > > diff --git a/drivers/gpu/drm/drm_privacy_screen_x86.c b/drivers/gpu/drm/drm_privacy_screen_x86.c > index a2cafb294ca6..88802cd7a1ee 100644 > --- a/drivers/gpu/drm/drm_privacy_screen_x86.c > +++ b/drivers/gpu/drm/drm_privacy_screen_x86.c > @@ -47,6 +47,13 @@ static bool __init detect_thinkpad_privacy_screen(void) > } > #endif > > +#if IS_ENABLED(CONFIG_CHROMEOS_PRIVACY_SCREEN) > +static bool __init detect_chromeos_privacy_screen(void) > +{ > + return acpi_dev_present("GOOG0010", NULL, -1); > +} > +#endif > + > static const struct arch_init_data arch_init_data[] __initconst = { > #if IS_ENABLED(CONFIG_THINKPAD_ACPI) > { > @@ -58,6 +65,16 @@ static const struct arch_init_data arch_init_data[] __initconst = { > .detect = detect_thinkpad_privacy_screen, > }, > #endif > +#if IS_ENABLED(CONFIG_CHROMEOS_PRIVACY_SCREEN) > + { > + .lookup = { > + .dev_id = NULL, > + .con_id = NULL, > + .provider = "privacy_screen-GOOG0010:00", > + }, > + .detect = detect_chromeos_privacy_screen, > + }, > +#endif > }; > > void __init drm_privacy_screen_lookup_init(void) > -- > 2.34.1.575.g55b058a8bb-goog > -- Benson Leung Staff Software Engineer Chrome OS Kernel Google Inc. bleung@xxxxxxxxxx Chromium OS Project bleung@xxxxxxxxxxxx
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