From patchwork Wed Nov 18 23:43:49 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Abhishek Pandit-Subedi X-Patchwork-Id: 1402655 Return-Path: X-Original-To: patchwork-incoming-netdev@ozlabs.org Delivered-To: patchwork-incoming-netdev@ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=23.128.96.18; helo=vger.kernel.org; envelope-from=netdev-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=pass (p=none dis=none) header.from=chromium.org Authentication-Results: ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=chromium.org header.i=@chromium.org header.a=rsa-sha256 header.s=google header.b=N9sqPWGr; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by ozlabs.org (Postfix) with ESMTP id 4CbztM2vdbz9sTL for ; Thu, 19 Nov 2020 10:44:27 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727235AbgKRXoF (ORCPT ); Wed, 18 Nov 2020 18:44:05 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40502 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726300AbgKRXoE (ORCPT ); Wed, 18 Nov 2020 18:44:04 -0500 Received: from mail-pl1-x643.google.com (mail-pl1-x643.google.com [IPv6:2607:f8b0:4864:20::643]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C3C7CC0617A7 for ; Wed, 18 Nov 2020 15:44:04 -0800 (PST) Received: by mail-pl1-x643.google.com with SMTP id s2so1899785plr.9 for ; Wed, 18 Nov 2020 15:44:04 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=FtRxO4GemGjvQrMlES911DtV5VS1GNyC2f2uIjqIY44=; b=N9sqPWGrOl4w0sTA0YeGv0oEUvPcX29fc3q7s9Lc6kKxI1cin/1FGLDsPklUFx3WH4 Ndz3RykX+GS/Umt850AWO/UZmdJ6w8noHEcBr13whNVSIyFNUAiDVC73BcdUMd5gUGK5 KhCWhrKUWg8O8mCW6g3b4mzekeBcI7oVzT3qU= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=FtRxO4GemGjvQrMlES911DtV5VS1GNyC2f2uIjqIY44=; b=BsZJCwKL0i97BM+zIizgVZS5FSvZOg7CnXenuZGx2h/fceUIsYUiV8x7vlyJNTcxp2 hLl60tKFodiD7gQrYorYOEzMwVnjxWZVIZ/EyDzQK+gOJh1liXa5YZGZts9B44wmUDos vEE8+ZWWCftciHdFjRgc/kQVjbV/novgUyFRDfOOU2yqwGabpM27N7uyGVL+Ex4BH3LH MphFDk2D6/qEjh2KhakFs1vNQ/w1PZETOcTapmm/Ed748jtWAautWSObU6ZwbgSpfwob jygOJAkmoyq8PpmxlPHaK8UZH5u0MXy7kcG2fxXsv2D++anhp3wxOu9SfxEPsLo3xxn5 IC8A== X-Gm-Message-State: AOAM531pG7Nv74Qyu24O8FGSpHy8SBxwgfuMeDLT5Yx1pIqxAVSF0hbg lKCz6AE0d/eJzI3+5hlkGBfviw== X-Google-Smtp-Source: ABdhPJw3KGa/xIgwjgSmYgn2Vm5bx1X/lCf6LYoKrbV+HuKqVFwlSCwMEaLLx1mEESdUQH/XI5qWLw== X-Received: by 2002:a17:902:be07:b029:d8:afa1:3d76 with SMTP id r7-20020a170902be07b02900d8afa13d76mr6507615pls.14.1605743044245; Wed, 18 Nov 2020 15:44:04 -0800 (PST) Received: from apsdesk.mtv.corp.google.com ([2620:15c:202:1:7220:84ff:fe09:2b94]) by smtp.gmail.com with ESMTPSA id f6sm21437435pgi.70.2020.11.18.15.44.03 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 18 Nov 2020 15:44:03 -0800 (PST) From: Abhishek Pandit-Subedi To: marcel@holtmann.org, linux-bluetooth@vger.kernel.org Cc: chromeos-bluetooth-upstreaming@chromium.org, mcchou@chromium.org, danielwinkler@chromium.org, Abhishek Pandit-Subedi , "David S. Miller" , Johan Hedberg , netdev@vger.kernel.org, linux-kernel@vger.kernel.org, Jakub Kicinski Subject: [PATCH 0/3] Bluetooth: Power down controller when suspending Date: Wed, 18 Nov 2020 15:43:49 -0800 Message-Id: <20201118234352.2138694-1-abhishekpandit@chromium.org> X-Mailer: git-send-email 2.29.2.299.gdc1121823c-goog MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Hi Marcel and linux-bluetooth, This patch series adds support for a quirk that will power down the Bluetooth controller when suspending and power it back up when resuming. On Marvell SDIO Bluetooth controllers (SD8897 and SD8997), we are seeing a large number of suspend failures with the following log messages: [ 4764.773873] Bluetooth: hci_cmd_timeout() hci0 command 0x0c14 tx timeout [ 4767.777897] Bluetooth: btmrvl_enable_hs() Host sleep enable command failed [ 4767.777920] Bluetooth: btmrvl_sdio_suspend() HS not actived, suspend failed! [ 4767.777946] dpm_run_callback(): pm_generic_suspend+0x0/0x48 returns -16 [ 4767.777963] call mmc2:0001:2+ returned -16 after 4882288 usecs The daily failure rate with this signature is quite significant and users are likely facing this at least once a day (and some unlucky users are likely facing it multiple times a day). Given the severity, we'd like to power off the controller during suspend so the driver doesn't need to take any action (or block in any way) when suspending and power on during resume. This will break wake-on-bt for users but should improve the reliability of suspend. We don't want to force all users of MVL8897 and MVL8997 to encounter this behavior if they're not affected (especially users that depend on Bluetooth for keyboard/mouse input) so the new behavior is enabled via module param. We are limiting this quirk to only Chromebooks (i.e. laptop). Chromeboxes will continue to have the old behavior since users may depend on BT HID to wake and use the system. These changes were tested in the following ways on a Chromebook running the 4.19 kernel and a MVL-SD8897 chipset. We added the module param in /etc/modprobe.d/btmrvl_sdio.conf with the contents "options btmrvl_sdio power_down_suspend=Y". Tests run: With no devices paired: - suspend_stress_test --wake_min 10 --suspend_min 10 --count 500 With an LE keyboard paired: - suspend_stress_test --wake_min 10 --suspend_min 10 --count 500 Using the ChromeOS AVL test suite (stress tests are 25 iterations): - bluetooth_AdapterSRHealth (basic suite) - bluetooth_AdapterSRHealth.sr_reconnect_classic_hid_stress - bluetooth_AdapterSRHealth.sr_reconnect_le_hid_stress Thanks, Abhishek Abhishek Pandit-Subedi (3): Bluetooth: Rename and move clean_up_hci_state Bluetooth: Add quirk to power down on suspend Bluetooth: btmrvl_sdio: Power down when suspending drivers/bluetooth/btmrvl_sdio.c | 10 ++++ include/net/bluetooth/hci.h | 7 +++ include/net/bluetooth/hci_core.h | 6 +++ net/bluetooth/hci_core.c | 93 +++++++++++++++++++++++++++++++- net/bluetooth/hci_request.c | 26 ++++++++- net/bluetooth/mgmt.c | 46 +--------------- 6 files changed, 140 insertions(+), 48 deletions(-)