From patchwork Wed May 15 23:15:21 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sean Wang X-Patchwork-Id: 13665603 Received: from mail-oi1-f170.google.com (mail-oi1-f170.google.com [209.85.167.170]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id BDF9B15CD46; Wed, 15 May 2024 23:15:41 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.167.170 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1715814943; cv=none; b=F6RAzSkOlXxfx0jGxBmKmZBYNSq86kg9pKqoU2uwdXiPzDmAhyzOAW5irVuGB/BdqWRVC1u5cbjalvw+b0A2TFCpQZ14Gf1KJhYf7uhwloAdvc3xDLao3G0e/P3kH8e4sdrQgOkGOIvKMChfF5FbRS95Qq0o39152dwW3UU435M= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1715814943; c=relaxed/simple; bh=Jp3BgbsRv61fdluoqzPcfIEveCnVhqg8xF3iPZw2188=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=iG0aKf3dT4HNVIhMuwyR6KWMOP+7Le0BsF/gXWsDDWaBGcvv5xNEELH9suM5n9Pqy4aR3IsnrB5iyNZVwh1dNswTs6y2dGRQ4RZedICgAHE821T8zx+0USoxA94zCjv02lNOUVVMUQI3phcPE5fjzRdwfoVPUcJLmqBli14x0fs= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org; spf=pass smtp.mailfrom=gmail.com; arc=none smtp.client-ip=209.85.167.170 Authentication-Results: smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Received: by mail-oi1-f170.google.com with SMTP id 5614622812f47-3c998b36c6bso1208073b6e.3; Wed, 15 May 2024 16:15:41 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1715814941; x=1716419741; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=Ze1QygMwN68meqo9PDmwz469IrrkJxaffJS5Hm7aDfQ=; b=p/1DFGmnDUJn2dxuWA/VA4gbpJX0Q3UajADBE2wcWF/CGcB33g6FcgJQSkpjYI8bOl vgC9tcKQ3LT+ZclLD2LV40KiVBCjk5vo1Kq0QGysfLSQVBLprKrkOafmCYR43gmViQlE 12miX+dJMqZoLGg8XCYxIMiC16QsKCwd7GhJhdZD20FmZfBXAD64c1/x93N4aTevjxaO 7dXvoI00kKBgAQrl6jbf06ijwQ/hHqnq9hctXXjEjyZRTgLTMABfCF2/X4XNf8d/KfL/ TVHRj6E/kw8BhQIhyPhv1DWu9/jG8Tl+mBC7xwba6CyVaRBmSmk/o6cmqKRsuxAs5WtD T4sA== X-Forwarded-Encrypted: i=1; AJvYcCVchA+hcKpXZmISWS5ht3g2t5Tsaqzz9zHSnshF2YvjwI9M2PEABlKtW5tZOjgntlZpQiapAWdHKTYs77IUZQaGT626npPIYMkthRU6 X-Gm-Message-State: AOJu0YwF6F24yrdG/WyJuo0xz4J5pZ+FwTcqplJ5ADoADrKXmw9thB+d fPV+yMg1sXvV/v0WtMzz37Cvdm0iQrYMT+ES6t3JLvv/RTKGU+T2 X-Google-Smtp-Source: AGHT+IFeY6IBOmS16l1KarBie8GoRXUZtYtFiMESabNjNgeh9/aF2ykz5OpkEZWWolf+VV2rf5fl6g== X-Received: by 2002:a4a:de14:0:b0:5b2:7aa7:7b29 with SMTP id 006d021491bc7-5b28193d5e7mr17763186eaf.1.1715814940930; Wed, 15 May 2024 16:15:40 -0700 (PDT) Received: from sean-ThinkPad-T450s.lan ([207.191.35.252]) by smtp.gmail.com with ESMTPSA id 46e09a7af769-6f0ec2e566dsm2032159a34.15.2024.05.15.16.15.39 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 15 May 2024 16:15:40 -0700 (PDT) From: sean.wang@kernel.org To: marcel@holtmann.org, johan.hedberg@gmail.com, luiz.dentz@gmail.com Cc: linux-bluetooth@vger.kernel.org, linux-mediatek@lists.infradead.org, linux-kernel@vger.kernel.org, Hao Qin , Sean Wang Subject: [PATCH v5 5/5] Bluetooth: btusb: mediatek: add MT7922 subsystem reset Date: Wed, 15 May 2024 16:15:21 -0700 Message-Id: <90f8b0663933990ed1bf47dd6698d8ff69f1a948.1715813148.git.sean.wang@kernel.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-bluetooth@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Hao Qin Add the support of MT7922 bluetooth subsystem reset that was called the auto revert to self-recover from the fatal error in the controller like the host encounters HCI cmd timeout or the controller crashes. Co-developed-by: Sean Wang Signed-off-by: Sean Wang Signed-off-by: Hao Qin --- v3: split from the v2 to make the patch do one thing in a patch. v4: rebase onto the latest code v5: no change --- drivers/bluetooth/btusb.c | 14 +++++++++++++- 1 file changed, 13 insertions(+), 1 deletion(-) diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c index ddd5ca7596e5..79aefdb3324d 100644 --- a/drivers/bluetooth/btusb.c +++ b/drivers/bluetooth/btusb.c @@ -3039,7 +3039,16 @@ static int btusb_mtk_subsys_reset(struct hci_dev *hdev, u32 dev_id) u32 val; int err; - if (dev_id == 0x7925) { + if (dev_id == 0x7922) { + btusb_mtk_uhw_reg_read(data, MTK_BT_SUBSYS_RST, &val); + val |= 0x00002020; + btusb_mtk_uhw_reg_write(data, MTK_BT_SUBSYS_RST, val); + btusb_mtk_uhw_reg_write(data, MTK_EP_RST_OPT, 0x00010001); + btusb_mtk_uhw_reg_read(data, MTK_BT_SUBSYS_RST, &val); + val |= BIT(0); + btusb_mtk_uhw_reg_write(data, MTK_BT_SUBSYS_RST, val); + msleep(100); + } else 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); @@ -3079,6 +3088,9 @@ static int btusb_mtk_subsys_reset(struct hci_dev *hdev, u32 dev_id) if (err < 0) bt_dev_err(hdev, "Reset timeout"); + if (dev_id == 0x7922) + btusb_mtk_uhw_reg_write(data, MTK_UDMA_INT_STA_BT, 0x000000FF); + btusb_mtk_id_get(data, 0x70010200, &val); if (!val) bt_dev_err(hdev, "Can't get device id, subsys reset fail.");