From patchwork Mon Mar 20 10:13:45 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hans de Goede X-Patchwork-Id: 13180908 X-Patchwork-Delegate: kvalo@adurom.com 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 8F00FC6FD1D for ; Mon, 20 Mar 2023 10:14:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229810AbjCTKOm (ORCPT ); Mon, 20 Mar 2023 06:14:42 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51654 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229719AbjCTKOl (ORCPT ); Mon, 20 Mar 2023 06:14:41 -0400 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5E1121114B for ; Mon, 20 Mar 2023 03:13:55 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1679307234; 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; bh=B5q7RGbF7vZwRDNbe8z2fP9XFXRdIWpysT7o650APMo=; b=enJ2neg786n5R7/8ubE387+4XVNUrm9X7L4R2ouMqNPJ+EQKELD8SONO4rMrgLAElIkbc3 Sq0FKjwq5tz70J83Rc0NKM8+dGnXYl1OUXcL0GUgQ2mGvu10gijopLQFOFe8l4PNQCcBaH VNyhEp2lIAbqxWhMaDe4THPhdlni+RM= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-33-0H1kmZfKN3mxC3bBVLa-xA-1; Mon, 20 Mar 2023 06:13:49 -0400 X-MC-Unique: 0H1kmZfKN3mxC3bBVLa-xA-1 Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.rdu2.redhat.com [10.11.54.1]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id BA737101A550; Mon, 20 Mar 2023 10:13:48 +0000 (UTC) Received: from x1.localdomain.com (unknown [10.39.194.130]) by smtp.corp.redhat.com (Postfix) with ESMTP id 6F42340C83AC; Mon, 20 Mar 2023 10:13:47 +0000 (UTC) From: Hans de Goede To: Arend van Spriel , Franky Lin , Hante Meuleman , Kalle Valo Cc: Hans de Goede , linux-wireless@vger.kernel.org, brcm80211-dev-list.pdl@broadcom.com, SHA-cyfmac-dev-list@infineon.com, Ulf Hansson Subject: [PATCH] wifi: brcmfmac: Fix SDIO suspend/resume regression Date: Mon, 20 Mar 2023 11:13:45 +0100 Message-Id: <20230320101345.105714-1-hdegoede@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.1 on 10.11.54.1 Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org After commit 92cadedd9d5f ("brcmfmac: Avoid keeping power to SDIO card unless WOWL is used"), the wifi adapter by default is turned off on suspend and then re-probed on resume. In at least 2 model x86/acpi tablets with brcmfmac43430a1 wifi adapters, the newly added re-probe on resume fails like this: brcmfmac: brcmf_sdio_bus_rxctl: resumed on timeout ieee80211 phy1: brcmf_bus_started: failed: -110 ieee80211 phy1: brcmf_attach: dongle is not responding: err=-110 brcmfmac: brcmf_sdio_firmware_callback: brcmf_attach failed It seems this specific brcmfmac model does not like being reprobed without it actually being turned off first. And the adapter is not being turned off during suspend because of commit f0992ace680c ("brcmfmac: prohibit ACPI power management for brcmfmac driver"). Now that the driver is being reprobed on resume, the disabling of ACPI pm is no longer necessary, except when WOWL is used (in which case there is no-reprobe). Move the dis-/en-abling of ACPI pm to brcmf_sdio_wowl_config(), this fixes the brcmfmac43430a1 suspend/resume regression and should help save some power when suspended. This change means that the code now also may re-enable ACPI pm when WOWL gets disabled. ACPI pm should only be re-enabled if it was enabled by the ACPI core originally. Add a brcmf_sdiod_acpi_save_power_manageable() to save the original state for this. This has been tested on the following devices: Asus T100TA brcmfmac43241b4-sdio Acer Iconia One 7 B1-750 brcmfmac43340-sdio Chuwi Hi8 brcmfmac43430a0-sdio Chuwi Hi8 brcmfmac43430a1-sdio (the Asus T100TA is the device for which the prohibiting of ACPI pm was originally added) Fixes: 92cadedd9d5f ("brcmfmac: Avoid keeping power to SDIO card unless WOWL is used") Cc: Ulf Hansson Signed-off-by: Hans de Goede --- .../broadcom/brcm80211/brcmfmac/bcmsdh.c | 33 +++++++++++++++---- .../broadcom/brcm80211/brcmfmac/sdio.h | 2 ++ 2 files changed, 28 insertions(+), 7 deletions(-) diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcmsdh.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcmsdh.c index b7c918f241c9..3d8e5d8a52a0 100644 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcmsdh.c +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcmsdh.c @@ -994,15 +994,34 @@ static const struct sdio_device_id brcmf_sdmmc_ids[] = { MODULE_DEVICE_TABLE(sdio, brcmf_sdmmc_ids); -static void brcmf_sdiod_acpi_set_power_manageable(struct device *dev, - int val) +static void brcmf_sdiod_acpi_save_power_manageable(struct brcmf_sdio_dev *sdiodev) { #if IS_ENABLED(CONFIG_ACPI) struct acpi_device *adev; - adev = ACPI_COMPANION(dev); + adev = ACPI_COMPANION(&sdiodev->func1->dev); if (adev) - adev->flags.power_manageable = 0; + sdiodev->func1_power_manageable = adev->flags.power_manageable; + + adev = ACPI_COMPANION(&sdiodev->func2->dev); + if (adev) + sdiodev->func2_power_manageable = adev->flags.power_manageable; +#endif +} + +static void brcmf_sdiod_acpi_set_power_manageable(struct brcmf_sdio_dev *sdiodev, + int enable) +{ +#if IS_ENABLED(CONFIG_ACPI) + struct acpi_device *adev; + + adev = ACPI_COMPANION(&sdiodev->func1->dev); + if (adev) + adev->flags.power_manageable = enable ? sdiodev->func1_power_manageable : 0; + + adev = ACPI_COMPANION(&sdiodev->func2->dev); + if (adev) + adev->flags.power_manageable = enable ? sdiodev->func2_power_manageable : 0; #endif } @@ -1025,9 +1044,6 @@ static int brcmf_ops_sdio_probe(struct sdio_func *func, /* Set MMC_QUIRK_LENIENT_FN0 for this card */ func->card->quirks |= MMC_QUIRK_LENIENT_FN0; - /* prohibit ACPI power management for this device */ - brcmf_sdiod_acpi_set_power_manageable(dev, 0); - /* Consume func num 1 but dont do anything with it. */ if (func->num == 1) return 0; @@ -1059,6 +1075,7 @@ static int brcmf_ops_sdio_probe(struct sdio_func *func, dev_set_drvdata(&sdiodev->func1->dev, bus_if); sdiodev->dev = &sdiodev->func1->dev; + brcmf_sdiod_acpi_save_power_manageable(sdiodev); brcmf_sdiod_change_state(sdiodev, BRCMF_SDIOD_DOWN); brcmf_dbg(SDIO, "F2 found, calling brcmf_sdiod_probe...\n"); @@ -1124,6 +1141,8 @@ void brcmf_sdio_wowl_config(struct device *dev, bool enabled) if (sdiodev->settings->bus.sdio.oob_irq_supported || pm_caps & MMC_PM_WAKE_SDIO_IRQ) { + /* Stop ACPI from turning off the device when wowl is enabled */ + brcmf_sdiod_acpi_set_power_manageable(sdiodev, !enabled); sdiodev->wowl_enabled = enabled; brcmf_dbg(SDIO, "Configuring WOWL, enabled=%d\n", enabled); return; diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.h b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.h index b76d34d36bde..0d18ed15b403 100644 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.h +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.h @@ -188,6 +188,8 @@ struct brcmf_sdio_dev { char nvram_name[BRCMF_FW_NAME_LEN]; char clm_name[BRCMF_FW_NAME_LEN]; bool wowl_enabled; + bool func1_power_manageable; + bool func2_power_manageable; enum brcmf_sdiod_state state; struct brcmf_sdiod_freezer *freezer; const struct firmware *clm_fw;