From patchwork Thu Dec 27 07:31:30 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Balakrishna Godavarthi X-Patchwork-Id: 10743533 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 99344746 for ; Thu, 27 Dec 2018 07:31:53 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 825512863C for ; Thu, 27 Dec 2018 07:31:53 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 72A9028640; Thu, 27 Dec 2018 07:31:53 +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 623502863C for ; Thu, 27 Dec 2018 07:31:49 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728524AbeL0Hbs (ORCPT ); Thu, 27 Dec 2018 02:31:48 -0500 Received: from smtp.codeaurora.org ([198.145.29.96]:49492 "EHLO smtp.codeaurora.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727007AbeL0Hbs (ORCPT ); Thu, 27 Dec 2018 02:31:48 -0500 Received: by smtp.codeaurora.org (Postfix, from userid 1000) id AB46460541; Thu, 27 Dec 2018 07:31:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1545895906; bh=3Rr7rYzk1tor6Xioj6gl0H2Bf6DAVuIM67ZBsWSL45Q=; h=From:To:Cc:Subject:Date:From; b=YQUzfxie2QAK1d6ARRT7StHJspPF1KW1LUXH0PT+EWC0NPjpAl7wQOU0WGUp1c/fd Hs1AD9MnRfRsITbOxY1BSXj81dhKtCJjVutR46kRfbeR4f1/zkIZOV4gNJv7xEpb+V GqSNkikI3nTsCcLMyRRuIlOfQsr9ir3SPFeLBmsQ= 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 44305602CB; Thu, 27 Dec 2018 07:31:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1545895906; bh=3Rr7rYzk1tor6Xioj6gl0H2Bf6DAVuIM67ZBsWSL45Q=; h=From:To:Cc:Subject:Date:From; b=YQUzfxie2QAK1d6ARRT7StHJspPF1KW1LUXH0PT+EWC0NPjpAl7wQOU0WGUp1c/fd Hs1AD9MnRfRsITbOxY1BSXj81dhKtCJjVutR46kRfbeR4f1/zkIZOV4gNJv7xEpb+V GqSNkikI3nTsCcLMyRRuIlOfQsr9ir3SPFeLBmsQ= DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 44305602CB 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 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 v6 0/6] Bug fixes for Qualcomm BT chip wcn3990 Date: Thu, 27 Dec 2018 13:01:30 +0530 Message-Id: <20181227073136.8431-1-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. hci_qca: Update baudrate change wait time for wcn3990 This patch will help to decrease the BT on time by 200ms. we updated the baudrate change wait time to 100ms instead of 300ms. 6. 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 v6: * added serdev_device_write_flush in qca_send_power_pulse(). * added new patch to update the baudrate change wait time. Changes in V5: * added serdev_device_write_flush before sending the power off pulse during shutdown. Changes in v4: * used serdev_device_write_buf() instead of serdev_device_write(). * added new patch to stop logging of 0xfc00 timeout on console. Changes in v3: * moved IBS & qca_flush to different patch * updated comments in code fo Deassert RTS patch Balakrishna Godavarthi (6): 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: hci_qca: Update baudrate change wait time for wcn3990 Bluetooth: btqca: inject command complete event during fw download drivers/bluetooth/btqca.c | 39 +++++++++++++++- drivers/bluetooth/btqca.h | 3 ++ drivers/bluetooth/hci_qca.c | 88 ++++++++++++++++++++++--------------- 3 files changed, 94 insertions(+), 36 deletions(-)