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Date: Fri, 24 Sep 2021 07:40:13 -0400
From: Sasha Levin <sashal@...nel.org>
To: "Limonciello, Mario" <Mario.Limonciello@....com>
Cc: "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
"stable@...r.kernel.org" <stable@...r.kernel.org>,
Maxwell Beck <max@....one>,
"Rafael J . Wysocki" <rafael.j.wysocki@...el.com>,
"linux-acpi@...r.kernel.org" <linux-acpi@...r.kernel.org>
Subject: Re: [PATCH AUTOSEL 5.14 10/25] ACPI: PM: s2idle: Run both AMD and
Microsoft methods if both are supported
On Tue, Sep 21, 2021 at 02:57:26PM +0000, Limonciello, Mario wrote:
>[Public]
>
>> -----Original Message-----
>> From: Sasha Levin <sashal@...nel.org>
>> Sent: Monday, September 13, 2021 17:33
>> To: linux-kernel@...r.kernel.org; stable@...r.kernel.org
>> Cc: Limonciello, Mario <Mario.Limonciello@....com>; Maxwell Beck
>> <max@....one>; Rafael J . Wysocki <rafael.j.wysocki@...el.com>; Sasha Levin
>> <sashal@...nel.org>; linux-acpi@...r.kernel.org
>> Subject: [PATCH AUTOSEL 5.14 10/25] ACPI: PM: s2idle: Run both AMD and
>> Microsoft methods if both are supported
>>
>> From: Mario Limonciello <mario.limonciello@....com>
>>
>> [ Upstream commit fa209644a7124b3f4cf811ced55daef49ae39ac6 ]
>>
>> It was reported that on "HP ENVY x360" that power LED does not come
>> back, certain keys like brightness controls do not work, and the fan
>> never spins up, even under load on 5.14 final.
>>
>> In analysis of the SSDT it's clear that the Microsoft UUID doesn't
>> provide functional support, but rather the AMD UUID should be
>> supporting this system.
>>
>> Because this is a gap in the expected logic, we checked back with
>> internal team. The conclusion was that on Windows AMD uPEP *does*
>> run even when Microsoft UUID present, but most OEM systems have
>> adopted value of "0x3" for supported functions and hence nothing
>> runs.
>>
>> Henceforth add support for running both Microsoft and AMD methods.
>> This approach will also allow the same logic on Intel systems if
>> desired at a future time as well by pulling the evaluation of
>> `lps0_dsm_func_mask_microsoft` out of the `if` block for
>> `acpi_s2idle_vendor_amd`.
>>
>> Link:
>> https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgitlab.fr
>> eedesktop.org%2Fdrm%2Famd%2Fuploads%2F9fbcd7ec3a385cc6949c9bacf45d
>> c41b%2Facpi-
>> f.20.bin&data=04%7C01%7Cmario.limonciello%40amd.com%7Ce1f8dfc3d
>> bfb45fc44ef08d97706917f%7C3dd8961fe4884e608e11a82d994e183d%7C0%7C
>> 0%7C637671692363481559%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjA
>> wMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sda
>> ta=wP0oz8OMnby9PA4MFrbY1ZAT%2FKv1jctTyXl%2BDteNHqY%3D&reserv
>> ed=0
>> BugLink:
>> https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgitlab.fr
>> eedesktop.org%2Fdrm%2Famd%2F-
>> %2Fissues%2F1691&data=04%7C01%7Cmario.limonciello%40amd.com%7
>> Ce1f8dfc3dbfb45fc44ef08d97706917f%7C3dd8961fe4884e608e11a82d994e183
>> d%7C0%7C0%7C637671692363481559%7CUnknown%7CTWFpbGZsb3d8eyJWIj
>> oiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C100
>> 0&sdata=MVhVz%2BYBTdwgvkkSRRFsL5QdfDLPgTzoMBjD4dsFfMA%3D&a
>> mp;reserved=0
>> Reported-by: Maxwell Beck <max@....one>
>> Signed-off-by: Mario Limonciello <mario.limonciello@....com>
>> [ rjw: Edits of the new comments ]
>> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
>> Signed-off-by: Sasha Levin <sashal@...nel.org>
>> ---
>> drivers/acpi/x86/s2idle.c | 67 +++++++++++++++++++++++----------------
>> 1 file changed, 39 insertions(+), 28 deletions(-)
>>
>> diff --git a/drivers/acpi/x86/s2idle.c b/drivers/acpi/x86/s2idle.c
>> index 3a308461246a..bd92b549fd5a 100644
>> --- a/drivers/acpi/x86/s2idle.c
>> +++ b/drivers/acpi/x86/s2idle.c
>> @@ -449,25 +449,30 @@ int acpi_s2idle_prepare_late(void)
>> if (pm_debug_messages_on)
>> lpi_check_constraints();
>>
>> - if (lps0_dsm_func_mask_microsoft > 0) {
>> + /* Screen off */
>> + if (lps0_dsm_func_mask > 0)
>> + acpi_sleep_run_lps0_dsm(acpi_s2idle_vendor_amd() ?
>> + ACPI_LPS0_SCREEN_OFF_AMD :
>> + ACPI_LPS0_SCREEN_OFF,
>> + lps0_dsm_func_mask, lps0_dsm_guid);
>> +
>> + 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_ENTRY,
>> - lps0_dsm_func_mask_microsoft,
>> lps0_dsm_guid_microsoft);
>> +
>> + /* LPS0 entry */
>> + if (lps0_dsm_func_mask > 0)
>> + acpi_sleep_run_lps0_dsm(acpi_s2idle_vendor_amd() ?
>> + ACPI_LPS0_ENTRY_AMD :
>> + ACPI_LPS0_ENTRY,
>> + lps0_dsm_func_mask, lps0_dsm_guid);
>> + if (lps0_dsm_func_mask_microsoft > 0) {
>> 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,
>> - lps0_dsm_func_mask, lps0_dsm_guid);
>> - } else {
>> - acpi_sleep_run_lps0_dsm(ACPI_LPS0_SCREEN_OFF,
>> - lps0_dsm_func_mask, lps0_dsm_guid);
>> - acpi_sleep_run_lps0_dsm(ACPI_LPS0_ENTRY,
>> - lps0_dsm_func_mask, lps0_dsm_guid);
>> + /* modern standby entry */
>> + acpi_sleep_run_lps0_dsm(ACPI_LPS0_MS_ENTRY,
>> + lps0_dsm_func_mask_microsoft,
>> lps0_dsm_guid_microsoft);
>> }
>> -
>> return 0;
>> }
>>
>> @@ -476,24 +481,30 @@ void acpi_s2idle_restore_early(void)
>> if (!lps0_device_handle || sleep_no_lps0)
>> return;
>>
>> - if (lps0_dsm_func_mask_microsoft > 0) {
>> - acpi_sleep_run_lps0_dsm(ACPI_LPS0_EXIT,
>> - lps0_dsm_func_mask_microsoft,
>> lps0_dsm_guid_microsoft);
>> + /* Modern standby exit */
>> + if (lps0_dsm_func_mask_microsoft > 0)
>> 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_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,
>> - lps0_dsm_func_mask, lps0_dsm_guid);
>> - } else {
>> +
>> + /* LPS0 exit */
>> + if (lps0_dsm_func_mask > 0)
>> + acpi_sleep_run_lps0_dsm(acpi_s2idle_vendor_amd() ?
>> + ACPI_LPS0_EXIT_AMD :
>> + ACPI_LPS0_EXIT,
>> + lps0_dsm_func_mask, lps0_dsm_guid);
>> + if (lps0_dsm_func_mask_microsoft > 0)
>> acpi_sleep_run_lps0_dsm(ACPI_LPS0_EXIT,
>> - lps0_dsm_func_mask, lps0_dsm_guid);
>> + lps0_dsm_func_mask_microsoft,
>> lps0_dsm_guid_microsoft);
>> +
>> + /* Screen on */
>> + if (lps0_dsm_func_mask_microsoft > 0)
>> acpi_sleep_run_lps0_dsm(ACPI_LPS0_SCREEN_ON,
>> - lps0_dsm_func_mask, lps0_dsm_guid);
>> - }
>> + lps0_dsm_func_mask_microsoft,
>> lps0_dsm_guid_microsoft);
>> + if (lps0_dsm_func_mask > 0)
>> + acpi_sleep_run_lps0_dsm(acpi_s2idle_vendor_amd() ?
>> + ACPI_LPS0_SCREEN_ON_AMD :
>> + ACPI_LPS0_SCREEN_ON,
>> + lps0_dsm_func_mask, lps0_dsm_guid);
>> }
>>
>> static const struct platform_s2idle_ops acpi_s2idle_ops_lps0 = {
>> --
>> 2.30.2
>
>I noticed this didn't get picked up automatically for 5.14.6, so as the submitter of the
>original patch here is an explicit:
>
>Acked-by: Mario Limonciello <mario.limonciello@....com>
Oh it did now, AUTOSEL just has a lengthier review process.
Thanks!
--
Thanks,
Sasha
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