From patchwork Wed Jan 12 07:39:13 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sean Wang X-Patchwork-Id: 12710963 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 638AAC433FE for ; Wed, 12 Jan 2022 07:42:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:CC:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=YbJNSSn58LQrmvcqztYq/vf1IkApYMurqIqQPQMcSw8=; b=cwLGQ7p699q9MN Eni4Q0MeTS4Q5uoSQrjMpdjPKPJH0r1Kqkiqt8pfQHeeuCSekLWMyC9viK1RR8uwkLKOQ153wc2B/ pCRSubGriQBj+otp0yP76uwJjRZnZg2SBzWauxonacfWbupFTLEu2Zgt4q/jMk9GxzWvy8F04KA0F 8zgmcofiCyfJeER9sJ0ANRnDmAZzatf+Dr1yCITDWtdMb0rjIX/PoN1VijKLmMje64iL0Vm3xne0p zdgP6TuiLy/rq+Ub6ScjjjEpqtwld/89G8Zge2pE6yL0lsnfIEeEb544Tq7kJEhy26YTLcXEgQ/4v yxtSI50Ulm72XxLdS9TQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1n7YH0-001PhO-Ig; Wed, 12 Jan 2022 07:42:22 +0000 Received: from mailgw01.mediatek.com ([216.200.240.184]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1n7YGv-001Pfv-Ip for linux-mediatek@lists.infradead.org; Wed, 12 Jan 2022 07:42:18 +0000 X-UUID: 2593a4c0597a420a8a315b8418bcd925-20220112 X-UUID: 2593a4c0597a420a8a315b8418bcd925-20220112 Received: from mtkcas66.mediatek.inc [(172.29.193.44)] by mailgw01.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLSv1.2 ECDHE-RSA-AES256-SHA384 256/256) with ESMTP id 2020266571; Wed, 12 Jan 2022 00:42:12 -0700 Received: from mtkmbs10n2.mediatek.inc (172.21.101.183) by MTKMBS62N2.mediatek.inc (172.29.193.42) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Tue, 11 Jan 2022 23:39:25 -0800 Received: from mtkcas11.mediatek.inc (172.21.101.40) by mtkmbs10n2.mediatek.inc (172.21.101.183) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) id 15.2.792.3; Wed, 12 Jan 2022 15:39:23 +0800 Received: from mtkswgap22.mediatek.inc (172.21.77.33) by mtkcas11.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Wed, 12 Jan 2022 15:39:23 +0800 From: To: , CC: , , , , , , , , , , , , , , , , , , , , , , , , , , , Mark Chen Subject: [PATCH 3/7] Bluetooth: mt7921s: fix bus hang with wrong privilege Date: Wed, 12 Jan 2022 15:39:13 +0800 Message-ID: X-Mailer: git-send-email 1.7.9.5 In-Reply-To: References: MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220111_234217_650214_5C80451F X-CRM114-Status: GOOD ( 10.85 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org From: Mark Chen According to chip hw flow, mt7921s need to re-acquire privilege again before normal running. Otherwise, the bus may be stuck in an abnormal status. Fixes: c603bf1f94d0 ("Bluetooth: btmtksdio: add MT7921s Bluetooth support") Co-developed-by: Sean Wang Signed-off-by: Sean Wang Signed-off-by: Mark Chen --- drivers/bluetooth/btmtksdio.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/bluetooth/btmtksdio.c b/drivers/bluetooth/btmtksdio.c index 8cbd49013d86..0951bb10d117 100644 --- a/drivers/bluetooth/btmtksdio.c +++ b/drivers/bluetooth/btmtksdio.c @@ -960,6 +960,14 @@ static int btmtksdio_setup(struct hci_dev *hdev) if (err < 0) return err; + err = btmtksdio_fw_pmctrl(bdev); + if (err < 0) + return err; + + err = btmtksdio_drv_pmctrl(bdev); + if (err < 0) + return err; + /* Enable SCO over I2S/PCM */ err = btmtksdio_sco_setting(hdev); if (err < 0) {