From: Pratik Vishwakarma <Pratik.Vishwakarma@xxxxxxx> This adds supports for _DSM notifications to the Microsoft UUID described by Microsoft documentation for s2idle. Link: https://docs.microsoft.com/en-us/windows-hardware/design/device-experiences/modern-standby-firmware-notifications Co-developed-by: Mario Limonciello <mario.limonciello@xxxxxxx> Signed-off-by: Mario Limonciello <mario.limonciello@xxxxxxx> Signed-off-by: Pratik Vishwakarma <Pratik.Vishwakarma@xxxxxxx> --- drivers/acpi/x86/s2idle.c | 34 ++++++++++++++++++++++++++++++---- 1 file changed, 30 insertions(+), 4 deletions(-) diff --git a/drivers/acpi/x86/s2idle.c b/drivers/acpi/x86/s2idle.c index 0d19669ac7ad..3f2a90648ec9 100644 --- a/drivers/acpi/x86/s2idle.c +++ b/drivers/acpi/x86/s2idle.c @@ -32,6 +32,9 @@ static const struct acpi_device_id lps0_device_ids[] = { {"", }, }; +/* Microsoft platform agnostic UUID */ +#define ACPI_LPS0_DSM_UUID_MICROSOFT "11e00d56-ce64-47ce-837b-1f898f9aa461" + #define ACPI_LPS0_DSM_UUID "c4eb40a0-6cd2-11e2-bcfd-0800200c9a66" #define ACPI_LPS0_GET_DEVICE_CONSTRAINTS 1 @@ -39,6 +42,8 @@ static const struct acpi_device_id lps0_device_ids[] = { #define ACPI_LPS0_SCREEN_ON 4 #define ACPI_LPS0_ENTRY 5 #define ACPI_LPS0_EXIT 6 +#define ACPI_LPS0_MS_ENTRY 7 +#define ACPI_LPS0_MS_EXIT 8 /* AMD */ #define ACPI_LPS0_DSM_UUID_AMD "e3f32452-febc-43ce-9039-932122d37721" @@ -51,6 +56,9 @@ static acpi_handle lps0_device_handle; static guid_t lps0_dsm_guid; static int lps0_dsm_func_mask; +static guid_t lps0_dsm_guid_microsoft; +static int lps0_dsm_func_mask_microsoft; + /* Device constraint entry structure */ struct lpi_device_info { char *name; @@ -366,14 +374,18 @@ static int lps0_device_attach(struct acpi_device *adev, rev_id = 0; lps0_dsm_func_mask = validate_dsm(adev->handle, ACPI_LPS0_DSM_UUID_AMD, rev_id, &lps0_dsm_guid); + lps0_dsm_func_mask_microsoft = validate_dsm(adev->handle, + ACPI_LPS0_DSM_UUID_MICROSOFT, rev_id, + &lps0_dsm_guid_microsoft); } else { rev_id = 1; lps0_dsm_func_mask = validate_dsm(adev->handle, ACPI_LPS0_DSM_UUID, rev_id, &lps0_dsm_guid); + lps0_dsm_func_mask_microsoft = -EINVAL; } - if (lps0_dsm_func_mask < 0) - return 0;//function eval failed + if (lps0_dsm_func_mask < 0 && lps0_dsm_func_mask_microsoft < 0) + return 0; //function evaluation failed lps0_device_handle = adev->handle; @@ -412,7 +424,14 @@ int acpi_s2idle_prepare_late(void) if (pm_debug_messages_on) lpi_check_constraints(); - if (acpi_s2idle_vendor_amd()) { + if (lps0_dsm_func_mask_microsoft > 0) { + acpi_sleep_run_lps0_dsm(ACPI_LPS0_SCREEN_OFF, + lps0_dsm_func_mask_microsoft, lps0_dsm_guid_microsoft); + acpi_sleep_run_lps0_dsm(ACPI_LPS0_MS_EXIT, + lps0_dsm_func_mask_microsoft, lps0_dsm_guid_microsoft); + acpi_sleep_run_lps0_dsm(ACPI_LPS0_ENTRY, + lps0_dsm_func_mask_microsoft, lps0_dsm_guid_microsoft); + } else if (acpi_s2idle_vendor_amd()) { acpi_sleep_run_lps0_dsm(ACPI_LPS0_SCREEN_OFF_AMD, lps0_dsm_func_mask, lps0_dsm_guid); acpi_sleep_run_lps0_dsm(ACPI_LPS0_ENTRY_AMD, @@ -432,7 +451,14 @@ void acpi_s2idle_restore_early(void) if (!lps0_device_handle || sleep_no_lps0) return; - if (acpi_s2idle_vendor_amd()) { + if (lps0_dsm_func_mask_microsoft > 0) { + acpi_sleep_run_lps0_dsm(ACPI_LPS0_EXIT, + lps0_dsm_func_mask_microsoft, lps0_dsm_guid_microsoft); + acpi_sleep_run_lps0_dsm(ACPI_LPS0_MS_ENTRY, + lps0_dsm_func_mask_microsoft, lps0_dsm_guid_microsoft); + acpi_sleep_run_lps0_dsm(ACPI_LPS0_SCREEN_ON, + lps0_dsm_func_mask_microsoft, lps0_dsm_guid_microsoft); + } else if (acpi_s2idle_vendor_amd()) { acpi_sleep_run_lps0_dsm(ACPI_LPS0_EXIT_AMD, lps0_dsm_func_mask, lps0_dsm_guid); acpi_sleep_run_lps0_dsm(ACPI_LPS0_SCREEN_ON_AMD, -- 2.25.1
