From: Alex Deucher Date: Wed, 5 May 2021 13:20:32 +0000 (-0400) Subject: ACPI: PM: s2idle: Add missing LPS0 functions for AMD X-Git-Tag: v5.15~867^2~3^2~8^2~3^2~1 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=f59a905b962c34642e862b5edec35c0eda72d70d;p=platform%2Fkernel%2Flinux-starfive.git ACPI: PM: s2idle: Add missing LPS0 functions for AMD These are supposedly not required for AMD platforms, but at least some HP laptops seem to require it to properly turn off the keyboard backlight. Based on a patch from Marcin Bachry . Bug: https://gitlab.freedesktop.org/drm/amd/-/issues/1230 Reviewed-by: Hans de Goede Signed-off-by: Alex Deucher Signed-off-by: Rafael J. Wysocki --- diff --git a/drivers/acpi/x86/s2idle.c b/drivers/acpi/x86/s2idle.c index 2b69536..2d7ddb8 100644 --- a/drivers/acpi/x86/s2idle.c +++ b/drivers/acpi/x86/s2idle.c @@ -42,6 +42,8 @@ static const struct acpi_device_id lps0_device_ids[] = { /* AMD */ #define ACPI_LPS0_DSM_UUID_AMD "e3f32452-febc-43ce-9039-932122d37721" +#define ACPI_LPS0_ENTRY_AMD 2 +#define ACPI_LPS0_EXIT_AMD 3 #define ACPI_LPS0_SCREEN_OFF_AMD 4 #define ACPI_LPS0_SCREEN_ON_AMD 5 @@ -408,6 +410,7 @@ int acpi_s2idle_prepare_late(void) if (acpi_s2idle_vendor_amd()) { acpi_sleep_run_lps0_dsm(ACPI_LPS0_SCREEN_OFF_AMD); + acpi_sleep_run_lps0_dsm(ACPI_LPS0_ENTRY_AMD); } else { acpi_sleep_run_lps0_dsm(ACPI_LPS0_SCREEN_OFF); acpi_sleep_run_lps0_dsm(ACPI_LPS0_ENTRY); @@ -422,6 +425,7 @@ void acpi_s2idle_restore_early(void) return; if (acpi_s2idle_vendor_amd()) { + acpi_sleep_run_lps0_dsm(ACPI_LPS0_EXIT_AMD); acpi_sleep_run_lps0_dsm(ACPI_LPS0_SCREEN_ON_AMD); } else { acpi_sleep_run_lps0_dsm(ACPI_LPS0_EXIT);