From patchwork Sun Jun 26 23:27:36 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sean Wang X-Patchwork-Id: 12895914 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 64F54C43334 for ; Sun, 26 Jun 2022 23:27:49 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229727AbiFZX1s (ORCPT ); Sun, 26 Jun 2022 19:27:48 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48100 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229682AbiFZX1r (ORCPT ); Sun, 26 Jun 2022 19:27:47 -0400 Received: from mailgw01.mediatek.com (unknown [60.244.123.138]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 40E252BEB; Sun, 26 Jun 2022 16:27:46 -0700 (PDT) X-UUID: 56871dbf8593469eb0112fb5eb0b22dc-20220627 X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.6,REQID:15fc8f8d-b5af-434f-92b5-7fab2098bdab,OB:0,LO B:0,IP:0,URL:5,TC:0,Content:0,EDM:0,RT:0,SF:0,FILE:0,RULE:Release_Ham,ACTI ON:release,TS:5 X-CID-META: VersionHash:b14ad71,CLOUDID:9d638bea-f7af-4e69-92ee-0fd74a0c286c,C OID:IGNORED,Recheck:0,SF:nil,TC:nil,Content:0,EDM:-3,IP:nil,URL:1,File:nil ,QS:nil,BEC:nil,COL:0 X-UUID: 56871dbf8593469eb0112fb5eb0b22dc-20220627 Received: from mtkmbs11n2.mediatek.inc [(172.21.101.187)] by mailgw01.mediatek.com (envelope-from ) (Generic MTA with TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384 256/256) with ESMTP id 164823766; Mon, 27 Jun 2022 07:27:39 +0800 Received: from mtkmbs07n1.mediatek.inc (172.21.101.16) by mtkmbs11n2.mediatek.inc (172.21.101.187) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) id 15.2.792.3; Mon, 27 Jun 2022 07:27:37 +0800 Received: from mtkmbs11n1.mediatek.inc (172.21.101.186) by mtkmbs07n1.mediatek.inc (172.21.101.16) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Mon, 27 Jun 2022 07:27:37 +0800 Received: from mtkswgap22.mediatek.inc (172.21.77.33) by mtkmbs11n1.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.2.792.3 via Frontend Transport; Mon, 27 Jun 2022 07:27:37 +0800 From: To: , CC: , , , , , , , , , , , , , , , , , , , , , , , , , "Yake Yang" Subject: [PATCH v3] Bluetooth: btmtksdio: Add in-band wakeup support Date: Mon, 27 Jun 2022 07:27:36 +0800 Message-ID: <848d3d5baf23eb78411a9672b8973ae3c593db98.1656285304.git.objelf@gmail.com> X-Mailer: git-send-email 1.7.9.5 MIME-Version: 1.0 X-MTK: N Precedence: bulk List-ID: X-Mailing-List: linux-bluetooth@vger.kernel.org From: Sean Wang Commit ce64b3e94919 ("Bluetooth: mt7921s: Support wake on bluetooth") adds the wake on bluethooth via a dedicated GPIO. Extend the wake-on-bluetooth to use the SDIO DAT1 pin (in-band wakeup), when supported by the SDIO host driver. Co-developed-by: Yake Yang Signed-off-by: Yake Yang Signed-off-by: Sean Wang Reviewed-by: AngeloGioacchino Del Regno --- v2: enhance the patch description and comments v3: add a way suggested by the AngeloGioacchino Del Regno that look elegant and can avoid the addition of the BTMTKSDIO_INBAND_WAKEUP flag --- drivers/bluetooth/btmtksdio.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/drivers/bluetooth/btmtksdio.c b/drivers/bluetooth/btmtksdio.c index d6700efcfe8c..f9a3444753c2 100644 --- a/drivers/bluetooth/btmtksdio.c +++ b/drivers/bluetooth/btmtksdio.c @@ -1282,6 +1282,13 @@ static void btmtksdio_cmd_timeout(struct hci_dev *hdev) hci_reset_dev(hdev); } +static bool btmtksdio_sdio_inband_wakeup(struct hci_dev *hdev) +{ + struct btmtksdio_dev *bdev = hci_get_drvdata(hdev); + + return device_may_wakeup(bdev->dev); +} + static bool btmtksdio_sdio_wakeup(struct hci_dev *hdev) { struct btmtksdio_dev *bdev = hci_get_drvdata(hdev); @@ -1349,6 +1356,14 @@ static int btmtksdio_probe(struct sdio_func *func, hdev->shutdown = btmtksdio_shutdown; hdev->send = btmtksdio_send_frame; hdev->wakeup = btmtksdio_sdio_wakeup; + /* + * If SDIO controller supports wake on Bluetooth, sending a wakeon + * command is not necessary. + */ + if (device_can_wakeup(func->card->host->parent)) + hdev->wakeup = btmtksdio_sdio_inband_wakeup; + else + hdev->wakeup = btmtksdio_sdio_wakeup; hdev->set_bdaddr = btmtk_set_bdaddr; SET_HCIDEV_DEV(hdev, &func->dev);