From patchwork Wed Dec 22 03:11:45 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sean Wang X-Patchwork-Id: 12690907 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 A84D4C433F5 for ; Wed, 22 Dec 2021 03:12:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S242072AbhLVDME (ORCPT ); Tue, 21 Dec 2021 22:12:04 -0500 Received: from mailgw01.mediatek.com ([60.244.123.138]:44414 "EHLO mailgw01.mediatek.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S242067AbhLVDMC (ORCPT ); Tue, 21 Dec 2021 22:12:02 -0500 X-UUID: 13a403c1e5464b43888c7ff10c8836a3-20211222 X-UUID: 13a403c1e5464b43888c7ff10c8836a3-20211222 Received: from mtkmbs10n1.mediatek.inc [(172.21.101.34)] by mailgw01.mediatek.com (envelope-from ) (Generic MTA with TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384 256/256) with ESMTP id 99995609; Wed, 22 Dec 2021 11:11:57 +0800 Received: from mtkexhb02.mediatek.inc (172.21.101.103) 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, 22 Dec 2021 11:11:56 +0800 Received: from mtkcas11.mediatek.inc (172.21.101.40) by mtkexhb02.mediatek.inc (172.21.101.103) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Wed, 22 Dec 2021 11:11:49 +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, 22 Dec 2021 11:11:49 +0800 From: To: , CC: , , , , , , , , , , , , , , , , , , , , , , , , , , , Mark Chen Subject: [PATCH v2 1/3] Bluetooth: mt7921s: Support wake on bluetooth Date: Wed, 22 Dec 2021 11:11:45 +0800 Message-ID: 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: Mark Chen Enable wake on bluetooth on mt7921s that can be supported since the firmware with version 20211129211059 was added, and the patch would not cause any harm even when the old firmware is applied. The patch was tested by setting up an HID or HOGP profile to connect a Bluetooth keyboard and mouse, then putting the system to suspend, then trying to wake up the system by moving the Bluetooth keyboard or mouse, and then checking if the system can wake up and be brought back to the normal state. Co-developed-by: Sean Wang Signed-off-by: Sean Wang Signed-off-by: Mark Chen --- v2: refine the git message --- drivers/bluetooth/btmtk.h | 8 ++++++++ drivers/bluetooth/btmtksdio.c | 31 ++++++++++++++++++++++++++++++- 2 files changed, 38 insertions(+), 1 deletion(-) diff --git a/drivers/bluetooth/btmtk.h b/drivers/bluetooth/btmtk.h index 6e7b0c7567c0..2be1d2680ad8 100644 --- a/drivers/bluetooth/btmtk.h +++ b/drivers/bluetooth/btmtk.h @@ -68,6 +68,14 @@ struct btmtk_tci_sleep { u8 time_compensation; } __packed; +struct btmtk_wakeon { + u8 mode; + u8 gpo; + u8 active_high; + __le16 enable_delay; + __le16 wakeup_delay; +} __packed; + struct btmtk_hci_wmt_params { u8 op; u8 flag; diff --git a/drivers/bluetooth/btmtksdio.c b/drivers/bluetooth/btmtksdio.c index b5ea8d3bffaa..771733ce362b 100644 --- a/drivers/bluetooth/btmtksdio.c +++ b/drivers/bluetooth/btmtksdio.c @@ -958,6 +958,30 @@ static int btmtksdio_send_frame(struct hci_dev *hdev, struct sk_buff *skb) return 0; } +static bool btmtk_sdio_wakeup(struct hci_dev *hdev) +{ + struct btmtksdio_dev *bdev = hci_get_drvdata(hdev); + bool may_wakeup = device_may_wakeup(bdev->dev); + struct btmtk_wakeon bt_awake = { + .mode = 0x1, + .gpo = 0, + .active_high = 0x1, + .enable_delay = cpu_to_le16(0xc80), + .wakeup_delay = cpu_to_le16(0x20) + }; + struct sk_buff *skb; + + if (may_wakeup && + bdev->data->chipid == 0x7921) { + skb = __hci_cmd_sync(hdev, 0xfc27, sizeof(bt_awake), + &bt_awake, HCI_CMD_TIMEOUT); + if (IS_ERR(skb)) + may_wakeup = false; + } + + return may_wakeup; +} + static int btmtksdio_probe(struct sdio_func *func, const struct sdio_device_id *id) { @@ -998,6 +1022,7 @@ static int btmtksdio_probe(struct sdio_func *func, hdev->shutdown = btmtksdio_shutdown; hdev->send = btmtksdio_send_frame; hdev->set_bdaddr = btmtk_set_bdaddr; + hdev->wakeup = btmtk_sdio_wakeup; SET_HCIDEV_DEV(hdev, &func->dev); @@ -1032,7 +1057,11 @@ static int btmtksdio_probe(struct sdio_func *func, */ pm_runtime_put_noidle(bdev->dev); - return 0; + err = device_init_wakeup(bdev->dev, true); + if (err) + bt_dev_err(hdev, "%s: failed to init_wakeup", __func__); + + return err; } static void btmtksdio_remove(struct sdio_func *func)