From patchwork Mon Dec 17 14:13:25 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Balakrishna Godavarthi X-Patchwork-Id: 10733553 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 5BE3E6C5 for ; Mon, 17 Dec 2018 14:15:04 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 496C729DC9 for ; Mon, 17 Dec 2018 14:15:04 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 38A9029F79; Mon, 17 Dec 2018 14:15:04 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.7 required=2.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 2E51229DC9 for ; Mon, 17 Dec 2018 14:15:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1733277AbeLQONq (ORCPT ); Mon, 17 Dec 2018 09:13:46 -0500 Received: from smtp.codeaurora.org ([198.145.29.96]:46654 "EHLO smtp.codeaurora.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726767AbeLQONq (ORCPT ); Mon, 17 Dec 2018 09:13:46 -0500 Received: by smtp.codeaurora.org (Postfix, from userid 1000) id 7AD906076A; Mon, 17 Dec 2018 14:13:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1545056025; bh=QQPlGJ6nyMe+PA6Gkrfu1shbbb+6dt1ib4r73YjdKLc=; h=From:To:Cc:Subject:Date:From; b=P6J7SEeoOHOdAsjBM8TwuOjIFKe4iHDVZnRIxzYNj96YWUxogdk/q9R1w9k6eL+eF KcjZKd20WfekCCXu/UtyNt+T3/DJg1BxvIqT6bCB1+XJVXZ2o1MVgprpC1/hDbc8S5 s1BlapuzSIdiCVFx8PoQsJ9KgVwheQhPITDNhb1o= Received: from bgodavar-linux.qualcomm.com (blr-c-bdr-fw-01_globalnat_allzones-outside.qualcomm.com [103.229.19.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: bgodavar@smtp.codeaurora.org) by smtp.codeaurora.org (Postfix) with ESMTPSA id 24A8160208; Mon, 17 Dec 2018 14:13:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1545056025; bh=QQPlGJ6nyMe+PA6Gkrfu1shbbb+6dt1ib4r73YjdKLc=; h=From:To:Cc:Subject:Date:From; b=P6J7SEeoOHOdAsjBM8TwuOjIFKe4iHDVZnRIxzYNj96YWUxogdk/q9R1w9k6eL+eF KcjZKd20WfekCCXu/UtyNt+T3/DJg1BxvIqT6bCB1+XJVXZ2o1MVgprpC1/hDbc8S5 s1BlapuzSIdiCVFx8PoQsJ9KgVwheQhPITDNhb1o= DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 24A8160208 Authentication-Results: pdx-caf-mail.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: pdx-caf-mail.web.codeaurora.org; spf=none smtp.mailfrom=bgodavar@codeaurora.org From: Balakrishna Godavarthi To: marcel@holtmann.org, johan.hedberg@gmail.com, johan@kernel.org Cc: mka@chromium.org, linux-kernel@vger.kernel.org, linux-bluetooth@vger.kernel.org, hemantg@codeaurora.org, linux-arm-msm@vger.kernel.org, Balakrishna Godavarthi Subject: [PATCH v4 0/5] Bug fixes for Qualcomm BT chip wcn3990 Date: Mon, 17 Dec 2018 19:43:25 +0530 Message-Id: <20181217141330.6294-1-bgodavar@codeaurora.org> X-Mailer: git-send-email 2.19.1 MIME-Version: 1.0 Sender: linux-arm-msm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP The below issues are found in the recent testing. 1. Observed device is not going into off state or not responding. As wcn3990 require a power pulses to turn on the irrespctive of igniting regulators, it was observed that power on or power off pulses are not in sync with respective to chip. The below patch will help us to wait until byte is pushed on to wires. * Bluetooth: hci_qca: use wait_until_sent() for power pulses 2. Observed Chip responding when we are in sleep. This is due to turn on flow control during change baudrate request. The below patch will only pull the RTS line high instead of turning off the flow. * Bluetooth: hci_qca: Pull RTS line high for baudrate change command. 3. Frame reassembly errors splashing on console. wcn3990 requires will use multiple baudrates during booting stage. i.e. 2400 bps while sending power off pulse 115200 bps while sending power on pulse port close port open set baudrate to 115200 request the chip version. during above process, we are seeing some stray bytes coming up on the UART Rx FIFO it could be due to frequent baudrate change. This patch will stop the frame reassembly errors. * Bluetooth: hci_qca: Fix frame reassembly errors for wcn3990 4. Disable IBS state machine and flush Tx buffer We are disabling IBS and flushing the Tx buffer before turning off the chip. This is due to IBS state machine is active when we turn off the chip. This will stop queuing IBS protocol bytes. * Bluetooth: hci_qca: Disable IBS state machine and flush Tx buffer 5. btqca: inject command complete event during fw download Qualcomm latest chip will not send an command complete event for last packet of the fw dump sent, so here we are inject an command complete event. * Bluetooth: btqca: inject command complete event during fw download Changes in v3: * moved IBS & qca_flush to different patch * updated comments in code fo Deassert RTS patch Changes in v4: * used serdev_device_write_buf() instead of serdev_device_write(). * added new patch to stop logging of 0xfc00 timeout on console. Balakrishna Godavarthi (5): Bluetooth: hci_qca: use wait_until_sent() for power pulses Bluetooth: hci_qca: Deassert RTS while baudrate change command Bluetooth: hci_qca: Fix frame reassembly errors for wcn3990 Bluetooth: hci_qca: Disable IBS state machine and flush Tx buffer Bluetooth: btqca: inject command complete event during fw download drivers/bluetooth/btqca.c | 39 ++++++++++++++++++- drivers/bluetooth/btqca.h | 3 ++ drivers/bluetooth/hci_qca.c | 77 +++++++++++++++++++++---------------- 3 files changed, 84 insertions(+), 35 deletions(-)