From patchwork Mon Nov 22 17:05:33 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hans de Goede X-Patchwork-Id: 12632555 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id BF8E8C433EF for ; Mon, 22 Nov 2021 17:06:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237880AbhKVRJL (ORCPT ); Mon, 22 Nov 2021 12:09:11 -0500 Received: from us-smtp-delivery-124.mimecast.com ([170.10.129.124]:49653 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238000AbhKVRJJ (ORCPT ); Mon, 22 Nov 2021 12:09:09 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1637600763; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=StFri3RLtdyO8CigL7YbqsQgsUYZayoitG4VD3555vg=; b=BGLRgUuPn2SlbMuZ0USjJSgr93UhAHm6c4/k51YmKlVfbU88bD7Kyn/gwVddPFeBWX8Q6R xuaI3N2IsMrggHTrY0FvK2yTDDYbILDfjsSSFeOn9Elg1BE5eD0KlxrrYMMaERChEd/QkH B6pqZ9pBfaqCp0vKEDvqG0Ls7WvYBY4= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-255-cW5g7JpBMx2bVEWh9b2-cQ-1; Mon, 22 Nov 2021 12:05:57 -0500 X-MC-Unique: cW5g7JpBMx2bVEWh9b2-cQ-1 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.phx2.redhat.com [10.5.11.15]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 18B65100C661; Mon, 22 Nov 2021 17:05:56 +0000 (UTC) Received: from x1.localdomain (unknown [10.39.192.226]) by smtp.corp.redhat.com (Postfix) with ESMTP id 7ACE45D6D5; Mon, 22 Nov 2021 17:05:54 +0000 (UTC) From: Hans de Goede To: "Rafael J . Wysocki" , Adrian Hunter , Ulf Hansson Cc: Hans de Goede , Len Brown , linux-acpi@vger.kernel.org, linux-mmc@vger.kernel.org Subject: [PATCH v2 4/7] ACPI / x86: Add not-present quirk for the PCI0.SDHB.BRC1 device on the GPD win Date: Mon, 22 Nov 2021 18:05:33 +0100 Message-Id: <20211122170536.7725-5-hdegoede@redhat.com> In-Reply-To: <20211122170536.7725-1-hdegoede@redhat.com> References: <20211122170536.7725-1-hdegoede@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.15 Precedence: bulk List-ID: X-Mailing-List: linux-mmc@vger.kernel.org The GPD win and its sibling the GPD pocket (99% the same electronics in a different case) use a PCI wifi card. But the ACPI tables on both variants contain a bug where the SDIO MMC controller for SDIO wifi cards is enabled despite this. This SDIO MMC controller has a PCI0.SDHB.BRC1 child-device which _PS3 method sets a GPIO causing the PCI wifi card to turn off. At the moment there is a pretty ugly kludge in the sdhci-acpi.c code, just to work around the bug in the DSDT of this single design. This can be solved cleaner/simply with a quirk overriding the _STA return of the broken PCI0.SDHB.BRC1 PCI0.SDHB.BRC1 child with a status value of 0, so that its power_manageable flag gets cleared, avoiding this problem. Note that even though it is not used, the _STA method for the MMC controller is deliberately not overridden. If the status of the MMC controller were forced to 0 it would never get suspended, which would cause these mini-laptops to not reach S0i3 level when suspended. Signed-off-by: Hans de Goede --- Changes in v2: - Drop the Fixes: c10383e8ddf4 ("ACPI: scan: Release PM resources blocked by unused objects") tag and related wording in the commit message, since that patch has been reverted for now --- drivers/acpi/x86/utils.c | 20 +++++++++++++++++--- 1 file changed, 17 insertions(+), 3 deletions(-) diff --git a/drivers/acpi/x86/utils.c b/drivers/acpi/x86/utils.c index 190bfc2ab3f2..b3fb428461c6 100644 --- a/drivers/acpi/x86/utils.c +++ b/drivers/acpi/x86/utils.c @@ -94,9 +94,10 @@ static const struct override_status_id override_status_ids[] = { /* * The GPD win BIOS dated 20170221 has disabled the accelerometer, the * drivers sometimes cause crashes under Windows and this is how the - * manufacturer has solved this :| Note that the the DMI data is less - * generic then it seems, a board_vendor of "AMI Corporation" is quite - * rare and a board_name of "Default String" also is rare. + * manufacturer has solved this :| The DMI match may not seem unique, + * but it is. In the 67000+ DMI decode dumps from linux-hardware.org + * only 116 have board_vendor set to "AMI Corporation" and of those 116 + * only the GPD win and pocket entries' board_name is "Default string". * * Unfortunately the GPD pocket also uses these strings and its BIOS * was copy-pasted from the GPD win, so it has a disabled KIOX000A @@ -120,6 +121,19 @@ static const struct override_status_id override_status_ids[] = { DMI_MATCH(DMI_PRODUCT_NAME, "Default string"), DMI_MATCH(DMI_BIOS_DATE, "05/25/2017") }), + + /* + * The GPD win/pocket have a PCI wifi card, but its DSDT has the SDIO + * mmc controller enabled and that has a child-device which _PS3 + * method sets a GPIO causing the PCI wifi card to turn off. + * See above remark about uniqueness of the DMI match. + */ + NOT_PRESENT_ENTRY_PATH("\\_SB_.PCI0.SDHB.BRC1", ATOM_AIRMONT, { + DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "AMI Corporation"), + DMI_EXACT_MATCH(DMI_BOARD_NAME, "Default string"), + DMI_EXACT_MATCH(DMI_BOARD_SERIAL, "Default string"), + DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Default string"), + }), }; bool acpi_device_override_status(struct acpi_device *adev, unsigned long long *status)