On Sat, Jan 8, 2022 at 8:10 AM Hans de Goede <hdegoede@xxxxxxxxxx> wrote: > > Hi All, > > On 1/7/22 20:06, Benson Leung wrote: > > 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> > > Ok, I will merge this into drm-misc-next coming Monday. Thank you so much for your help! > > Note I'm afraid that it is too late for 5.17, the drm-misc maintainers > have already created the final drm-misc tag for the 5.17 pull-req. No problem, this works. Thanks & Best Regards, Rajat > > Regards, > > Hans > > > > > > > >> --- > >> 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 > >> > > >
