From patchwork Tue Feb 25 00:00:31 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: 11402201 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 6BCF414BC for ; Tue, 25 Feb 2020 00:01:25 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 4C2342465D for ; Tue, 25 Feb 2020 00:01:25 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=chromium.org header.i=@chromium.org header.b="jc5CHOxA" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728524AbgBYAAt (ORCPT ); Mon, 24 Feb 2020 19:00:49 -0500 Received: from mail-pj1-f66.google.com ([209.85.216.66]:55650 "EHLO mail-pj1-f66.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728501AbgBYAAs (ORCPT ); Mon, 24 Feb 2020 19:00:48 -0500 Received: by mail-pj1-f66.google.com with SMTP id d5so454189pjz.5 for ; Mon, 24 Feb 2020 16:00:48 -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=5+8ngQIB3GNYZhQp96LbiuLKzGQX6teIB6tS+tcQAEI=; b=jc5CHOxAioIkjj1QZAS40yykoz02ZFZzTowxaz1evbUBDn+APB+dg5yi/CqMRUHBPO CaS+PgoTg7kAlqDJ6pxDt/OaBB5uOGPxArVMkdbJ3VqoIWjg1xF8GVZLATzkElJ/Loww bUDs0l+DbGjuRVS0AnyNkLI+IfFwSvxJeLnB0= 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=5+8ngQIB3GNYZhQp96LbiuLKzGQX6teIB6tS+tcQAEI=; b=HPenMyB9My7ak7QWC8h6WPLEnw5IzaN0IAhuNTErM27dSjDKgKSSPS40M89x5rZLhB 552pv6btZXzyFTGJLcmTRk/arY0Kcc2/hZQCKhH0xzGnpkNo9D9mBvU9NvUKbcQEHe8f Bo1obeoC+6dZWHi79KoXbc8bOOErdxTTDPdpd0X/tUdQRV87QafwOXcxpHiaEgoqz65V 5cxZIVmdnjdNN33idl0x6FGh2zJOIceQJfsqnhTpDEhxlVh9buToddzG9HixDAaMOCZw 96CwAgaA+LCR+hcPQvy2sRY6aVJv+lQnfu5StVYJxU2MtbdVeB5p78RMM6I2MgXHcSBJ ItPQ== X-Gm-Message-State: APjAAAVu4gMTWpdOJVq18aYcL9qHA0S/FkV/120OW2gweiDjpaTQX2pF Co6aglR/D6uz/3A6GbmzsClwFg== X-Google-Smtp-Source: APXvYqzj/EmbtyPe0tewAX+jrs6CxwD84WnIm3mzFDz0oyXPS0y+ZDGcKiyEel+jbzhFqho5VvozQw== X-Received: by 2002:a17:90a:330c:: with SMTP id m12mr1868860pjb.18.1582588847029; Mon, 24 Feb 2020 16:00:47 -0800 (PST) Received: from apsdesk.mtv.corp.google.com ([2620:15c:202:1:e09a:8d06:a338:aafb]) by smtp.gmail.com with ESMTPSA id c188sm14477657pfb.151.2020.02.24.16.00.45 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 24 Feb 2020 16:00:46 -0800 (PST) From: Abhishek Pandit-Subedi To: marcel@holtmann.org, luiz.dentz@gmail.com, alainm@chromium.org Cc: linux-bluetooth@vger.kernel.org, chromeos-bluetooth-upstreaming@chromium.org, Abhishek Pandit-Subedi , "David S. Miller" , Johan Hedberg , netdev@vger.kernel.org, linux-kernel@vger.kernel.org, Jakub Kicinski Subject: [RFC PATCH v3 0/5] Bluetooth: Handle system suspend gracefully Date: Mon, 24 Feb 2020 16:00:31 -0800 Message-Id: <20200225000036.156250-1-abhishekpandit@chromium.org> X-Mailer: git-send-email 2.25.0.265.gbab2e86ba0-goog MIME-Version: 1.0 Sender: linux-bluetooth-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-bluetooth@vger.kernel.org Hi linux-bluetooth, This patch series prepares the Bluetooth controller for system suspend by disconnecting all devices and preparing the event filter and LE whitelist with devices that can wake the system from suspend. The main motivation for doing this is so we can enable Bluetooth as a wake up source during suspend without it being noisy. Bluetooth should wake the system when a HID device receives user input but otherwise not send any events to the host. This patch series was tested on several Chromebooks with both btusb and hci_serdev on kernel 4.19. The set of tests was basically the following: * Reconnects after suspend succeed * HID devices can wake the system from suspend (needs some related bluez changes to call the Set Wake Capable management command) * System properly pauses and unpauses discovery + advertising around suspend * System does not wake from any events from non wakeable devices Series 2 has refactored the change into multiple smaller commits as requested. I tried to simplify some of the whitelist filtering edge cases but unfortunately it remains quite complex. Series 3 has refactored it further and should have resolved the whitelisting complexity in series 2. Please review and provide any feedback. Thanks Abhishek Changes in v3: * Refactored to only handle BR/EDR devices * Split LE changes into its own commit Changes in v2: * Moved pm notifier registration into its own patch and moved params out of separate suspend_state * Refactored filters and whitelist settings to its own patch * Refactored update_white_list to have clearer edge cases * Add connected devices to whitelist (previously missing corner case) * Refactored pause discovery + advertising into its own patch Abhishek Pandit-Subedi (5): Bluetooth: Add mgmt op set_wake_capable Bluetooth: Handle PM_SUSPEND_PREPARE and PM_POST_SUSPEND Bluetooth: Handle BR/EDR devices during suspend Bluetooth: Handle LE devices during suspend Bluetooth: Pause discovery and advertising during suspend include/net/bluetooth/hci.h | 17 +- include/net/bluetooth/hci_core.h | 41 ++++ include/net/bluetooth/mgmt.h | 7 + net/bluetooth/hci_core.c | 86 ++++++++ net/bluetooth/hci_event.c | 24 +++ net/bluetooth/hci_request.c | 327 ++++++++++++++++++++++++++----- net/bluetooth/hci_request.h | 2 + net/bluetooth/mgmt.c | 92 +++++++++ 8 files changed, 536 insertions(+), 60 deletions(-)