From patchwork Fri Aug 30 05:01:44 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Harish Bandi X-Patchwork-Id: 11122943 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 2DDD4112C for ; Fri, 30 Aug 2019 05:03:22 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 0389C2186A for ; Fri, 30 Aug 2019 05:03:21 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="key not found in DNS" (0-bit key) header.d=codeaurora.org header.i=@codeaurora.org header.b="DF35DWi/"; dkim=fail reason="key not found in DNS" (0-bit key) header.d=codeaurora.org header.i=@codeaurora.org header.b="cq6tFOjr" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1725891AbfH3FCQ (ORCPT ); Fri, 30 Aug 2019 01:02:16 -0400 Received: from smtp.codeaurora.org ([198.145.29.96]:49362 "EHLO smtp.codeaurora.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725902AbfH3FCQ (ORCPT ); Fri, 30 Aug 2019 01:02:16 -0400 Received: by smtp.codeaurora.org (Postfix, from userid 1000) id 7AB7961B14; Fri, 30 Aug 2019 05:02:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1567141334; bh=fe+1CIFsLrsFmj7GnadvoGOHiiGzQrdsXLHYlpV+vnM=; h=From:To:Cc:Subject:Date:From; b=DF35DWi/vcIha8ZdCxzYGat7OgmKEDoWJ9P16AGIJunFqUn8gDuZY6RzkK1YBvQXc OyzXUZlhXMt3ZkhRluU+RMIKQvCCnZL3QzcSJHghAiMqdzjXYjAdvWUm4jaKC9hywP oxorZWI2p1t24zo3fb3J5k5M4pIcb3UjLU0ViFPg= X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on pdx-caf-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.7 required=2.0 tests=ALL_TRUSTED,BAYES_00, DKIM_INVALID,DKIM_SIGNED,SPF_NONE autolearn=no autolearn_force=no version=3.4.0 Received: from c-hbandi-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: c-hbandi@codeaurora.org) by smtp.codeaurora.org (Postfix) with ESMTPSA id 65CF3602FC; Fri, 30 Aug 2019 05:02:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1567141333; bh=fe+1CIFsLrsFmj7GnadvoGOHiiGzQrdsXLHYlpV+vnM=; h=From:To:Cc:Subject:Date:From; b=cq6tFOjrdTDeySUCvbiv+pnJOqt1EA0f/z2kgaQPmN973eij2IW0UMUzos6pQ8aIZ Dyj0sVSZ34RKvan+TEX75lLPeQqCeD70ezOD2PTF1BL6S9FMfmm0jI6fKZdlVzQeAV zuAmz7WnqM0Xb9GteUde4UCbbtVEvZTEGsV+AQoE= DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 65CF3602FC 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=c-hbandi@codeaurora.org From: Harish Bandi 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, bgodavar@codeaurora.org, anubhavg@codeaurora.org, Harish Bandi Subject: [PATCH v2] Bluetooth: hci_qca: wait for Pre shutdown complete event before sending the Power off pulse Date: Fri, 30 Aug 2019 10:31:44 +0530 Message-Id: <1567141304-24600-1-git-send-email-c-hbandi@codeaurora.org> X-Mailer: git-send-email 1.9.1 Sender: linux-arm-msm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org When SoC receives pre shut down command, it share the same with other COEX shared clients. So SoC needs a short time after sending VS pre shutdown command before turning off the regulators and sending the power off pulse. Along with short delay, needs to wait for command complete event for Pre shutdown VS command Signed-off-by: Harish Bandi Reviewed-by: Balakrishna Godavarthi --- Changes in V2: - Modified commit text. --- drivers/bluetooth/btqca.c | 22 ++++++++++++++++++++++ drivers/bluetooth/hci_qca.c | 5 +++++ 2 files changed, 27 insertions(+) diff --git a/drivers/bluetooth/btqca.c b/drivers/bluetooth/btqca.c index 8b33128..d48dc9e 100644 --- a/drivers/bluetooth/btqca.c +++ b/drivers/bluetooth/btqca.c @@ -99,6 +99,28 @@ static int qca_send_reset(struct hci_dev *hdev) return 0; } +int qca_send_pre_shutdown_cmd(struct hci_dev *hdev) +{ + struct sk_buff *skb; + int err; + + bt_dev_dbg(hdev, "QCA pre shutdown cmd"); + + skb = __hci_cmd_sync_ev(hdev, QCA_PRE_SHUTDOWN_CMD, 0, + NULL, HCI_EV_CMD_COMPLETE, HCI_INIT_TIMEOUT); + + if (IS_ERR(skb)) { + err = PTR_ERR(skb); + bt_dev_err(hdev, "QCA preshutdown_cmd failed (%d)", err); + return err; + } + + kfree_skb(skb); + + return 0; +} +EXPORT_SYMBOL_GPL(qca_send_pre_shutdown_cmd); + static void qca_tlv_check_data(struct rome_config *config, const struct firmware *fw) { diff --git a/drivers/bluetooth/hci_qca.c b/drivers/bluetooth/hci_qca.c index ab4c18e..43df13c 100644 --- a/drivers/bluetooth/hci_qca.c +++ b/drivers/bluetooth/hci_qca.c @@ -1367,6 +1367,11 @@ static int qca_power_off(struct hci_dev *hdev) { struct hci_uart *hu = hci_get_drvdata(hdev); + /* Perform pre shutdown command */ + qca_send_pre_shutdown_cmd(hdev); + + usleep_range(8000, 10000); + qca_power_shutdown(hu); return 0; }