From patchwork Tue Apr 5 07:19:53 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 558112 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 46A3FC43219 for ; Tue, 5 Apr 2022 08:07:18 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233585AbiDEIJM (ORCPT ); Tue, 5 Apr 2022 04:09:12 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50514 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236042AbiDEIBL (ORCPT ); Tue, 5 Apr 2022 04:01:11 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D534D49FB3; Tue, 5 Apr 2022 00:59:13 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 97CBDB81B14; Tue, 5 Apr 2022 07:59:12 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 07AD2C340EE; Tue, 5 Apr 2022 07:59:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1649145551; bh=qSRtZs8fsrIr02MXwnR3kLZ0JfjKLDShlPPya3X3rpc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=lahQKRQwDol25M2vYwKcB3BHukvAdbvN7t1A7Jy4T5Xo/RQ1w16lWRQVm9Ya2q2If hfGPwFrd+KWC3CeQ8iTpMYRBz0GBBW3tNQRMdXmWXdA0oOtlisAGCN0s6qTOpFoEPB jK8KymI+nWx61rCUu+v5xI/dWTOSPSf6eUBz75Ps= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Sean Wang , Mark Chen , Marcel Holtmann , Sasha Levin Subject: [PATCH 5.17 0446/1126] Bluetooth: mt7921s: fix firmware coredump retrieve Date: Tue, 5 Apr 2022 09:19:53 +0200 Message-Id: <20220405070420.715508964@linuxfoundation.org> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220405070407.513532867@linuxfoundation.org> References: <20220405070407.513532867@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Mark Chen [ Upstream commit 2fc967cc0dadad6735448cfbcbc77fe0ea30203d ] According to the MCU firmware behavior, as the driver is aware of the notification of the interrupt source FW_MAILBOX_INT that shows the MCU completed delivered a core dump piece to the host, the driver must acknowledge the MCU with the register PH2DSM0R bit PH2DSM0R_DRIVER_OWN to notify the MCU to handle the next core dump piece. Fixes: db57b625912a ("Bluetooth: btmtksdio: add support of processing firmware coredump and log") Co-developed-by: Sean Wang Signed-off-by: Sean Wang Signed-off-by: Mark Chen Signed-off-by: Marcel Holtmann Signed-off-by: Sasha Levin --- drivers/bluetooth/btmtksdio.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/drivers/bluetooth/btmtksdio.c b/drivers/bluetooth/btmtksdio.c index b5ea8d3bffaa..d4e2541a4873 100644 --- a/drivers/bluetooth/btmtksdio.c +++ b/drivers/bluetooth/btmtksdio.c @@ -87,8 +87,12 @@ MODULE_DEVICE_TABLE(sdio, btmtksdio_table); #define RX_DONE_INT BIT(1) #define TX_EMPTY BIT(2) #define TX_FIFO_OVERFLOW BIT(8) +#define FW_MAILBOX_INT BIT(15) #define RX_PKT_LEN GENMASK(31, 16) +#define MTK_REG_PH2DSM0R 0xc4 +#define PH2DSM0R_DRIVER_OWN BIT(0) + #define MTK_REG_CTDR 0x18 #define MTK_REG_CRDR 0x1c @@ -481,6 +485,12 @@ static void btmtksdio_txrx_work(struct work_struct *work) */ sdio_writel(bdev->func, int_status, MTK_REG_CHISR, NULL); + if ((int_status & FW_MAILBOX_INT) && + bdev->data->chipid == 0x7921) { + sdio_writel(bdev->func, PH2DSM0R_DRIVER_OWN, + MTK_REG_PH2DSM0R, 0); + } + if (int_status & FW_OWN_BACK_INT) bt_dev_dbg(bdev->hdev, "Get fw own back");