From patchwork Tue Jan 2 12:47:46 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hao Qin X-Patchwork-Id: 759739 Received: from mailgw01.mediatek.com (unknown [60.244.123.138]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 2CDF8F9C3; Tue, 2 Jan 2024 12:48:46 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=mediatek.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=mediatek.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=mediatek.com header.i=@mediatek.com header.b="Zxvd2YOa" X-UUID: 41ad12e8a96d11ee9e680517dc993faa-20240102 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mediatek.com; s=dk; h=Content-Type:MIME-Version:Message-ID:Date:Subject:CC:To:From; bh=BuK7s7sV/d/zocOp9WyQc4jOUhufFxVHx+kxKOinkOM=; b=Zxvd2YOakbMLVXW22ta99OLR0U+DOPShbO4uv1QTsvfqXsbArgWI2ItF6jr6tjQwxftTPtElyS95QvVkfFNvpCDdBp9raCTwvGsT+fGNQzBQIewGb8HwaA9nazUt/5TLxCSUqWAeNkdD8++TBUQqSihGNTYMJ6BlRdJ2ClANiPc=; X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.35, REQID:142c3af2-e436-4317-9cf2-1d4ce734d3e2, IP:0, U RL:0,TC:0,Content:0,EDM:0,RT:0,SF:0,FILE:0,BULK:0,RULE:Release_Ham,ACTION: release,TS:0 X-CID-META: VersionHash:5d391d7, CLOUDID:b724b92e-1ab8-4133-9780-81938111c800, B ulkID:nil,BulkQuantity:0,Recheck:0,SF:102,TC:nil,Content:0,EDM:-3,IP:nil,U RL:1,File:nil,Bulk:nil,QS:nil,BEC:nil,COL:0,OSI:0,OSA:0,AV:0,LES:1,SPR:NO, DKR:0,DKP:0,BRR:0,BRE:0 X-CID-BVR: 0,NGT X-CID-BAS: 0,NGT,0,_ X-CID-FACTOR: TF_CID_SPAM_SNR,TF_CID_SPAM_ULS X-UUID: 41ad12e8a96d11ee9e680517dc993faa-20240102 Received: from mtkmbs10n2.mediatek.inc [(172.21.101.183)] by mailgw01.mediatek.com (envelope-from ) (Generic MTA with TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384 256/256) with ESMTP id 881740024; Tue, 02 Jan 2024 20:48:41 +0800 Received: from mtkmbs13n2.mediatek.inc (172.21.101.108) by mtkmbs11n1.mediatek.inc (172.21.101.185) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.26; Tue, 2 Jan 2024 20:48:40 +0800 Received: from mhfsdcap04.gcn.mediatek.inc (10.17.3.154) by mtkmbs13n2.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.2.1118.26 via Frontend Transport; Tue, 2 Jan 2024 20:48:39 +0800 From: Hao Qin To: Marcel Holtmann , Johan Hedberg , Luiz Von Dentz CC: Sean Wang , Deren Wu , Aaron Hou , Chris Lu , Steve Lee , linux-bluetooth , linux-kernel , linux-mediatek , hao.qin Subject: [PATCH v2 1/2] Bluetooth: btusb: mediatek: refactor btusb_mtk_reset function Date: Tue, 2 Jan 2024 20:47:46 +0800 Message-ID: <20240102124747.21644-1-hao.qin@mediatek.com> X-Mailer: git-send-email 2.18.0 Precedence: bulk X-Mailing-List: linux-bluetooth@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: "hao.qin" Extract function btusb_mtk_subsys_reset from btusb_mtk_reset for future handling of resetting bluetooth controller without USB reset. Signed-off-by: hao.qin --- V1 -> V2: refactor btusb_mtk_reset function Link: https://lore.kernel.org/all/20231215063714.7684-1-hao.qin@mediatek.com/ --- drivers/bluetooth/btusb.c | 45 +++++++++++++++++++++++---------------- 1 file changed, 27 insertions(+), 18 deletions(-) diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c index 0926e4451802..abefcd1a089d 100644 --- a/drivers/bluetooth/btusb.c +++ b/drivers/bluetooth/btusb.c @@ -2994,28 +2994,13 @@ static u32 btusb_mtk_reset_done(struct hci_dev *hdev) return val & MTK_BT_RST_DONE; } -static int btusb_mtk_reset(struct hci_dev *hdev, void *rst_data) +static int btusb_mtk_subsys_reset(struct hci_dev *hdev, u32 dev_id) { struct btusb_data *data = hci_get_drvdata(hdev); - struct btmediatek_data *mediatek; u32 val; int err; - /* It's MediaTek specific bluetooth reset mechanism via USB */ - if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) { - bt_dev_err(hdev, "last reset failed? Not resetting again"); - return -EBUSY; - } - - err = usb_autopm_get_interface(data->intf); - if (err < 0) - return err; - - btusb_stop_traffic(data); - usb_kill_anchored_urbs(&data->tx_anchor); - mediatek = hci_get_priv(hdev); - - if (mediatek->dev_id == 0x7925) { + if (dev_id == 0x7925) { btusb_mtk_uhw_reg_read(data, MTK_BT_RESET_REG_CONNV3, &val); val |= (1 << 5); btusb_mtk_uhw_reg_write(data, MTK_BT_RESET_REG_CONNV3, val); @@ -3059,8 +3044,32 @@ static int btusb_mtk_reset(struct hci_dev *hdev, void *rst_data) if (!val) bt_dev_err(hdev, "Can't get device id, subsys reset fail."); - usb_queue_reset_device(data->intf); + return err; +} +static int btusb_mtk_reset(struct hci_dev *hdev, void *rst_data) +{ + struct btusb_data *data = hci_get_drvdata(hdev); + struct btmediatek_data *mediatek; + int err; + + /* It's MediaTek specific bluetooth reset mechanism via USB */ + if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) { + bt_dev_err(hdev, "last reset failed? Not resetting again"); + return -EBUSY; + } + + err = usb_autopm_get_interface(data->intf); + if (err < 0) + return err; + + btusb_stop_traffic(data); + usb_kill_anchored_urbs(&data->tx_anchor); + mediatek = hci_get_priv(hdev); + + err = btusb_mtk_subsys_reset(hdev, mediatek->dev_id); + + usb_queue_reset_device(data->intf); clear_bit(BTUSB_HW_RESET_ACTIVE, &data->flags); return err;