From mboxrd@z Thu Jan 1 00:00:00 1970 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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 43F7CC433FE for ; Fri, 8 Oct 2021 22:21:27 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 27C1A61027 for ; Fri, 8 Oct 2021 22:21:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S243681AbhJHWXV (ORCPT ); Fri, 8 Oct 2021 18:23:21 -0400 Received: from mailgw01.mediatek.com ([216.200.240.184]:36675 "EHLO mailgw01.mediatek.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S243642AbhJHWXI (ORCPT ); Fri, 8 Oct 2021 18:23:08 -0400 X-UUID: 431fb91993654d2b814cf9bbe0a2a408-20211008 X-UUID: 431fb91993654d2b814cf9bbe0a2a408-20211008 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 1638295555; Fri, 08 Oct 2021 15:20:06 -0700 Received: from mtkcas10.mediatek.inc (172.21.101.39) by MTKMBS62N1.mediatek.inc (172.29.193.41) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Fri, 8 Oct 2021 15:10:37 -0700 Received: from mtkswgap22.mediatek.inc (172.21.77.33) by mtkcas10.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Sat, 9 Oct 2021 06:10:36 +0800 From: To: , CC: , , , , , , , , , , , , , , , , , , , , , , , , , , , Mark-yw Chen Subject: [PATCH v1 04/10] Bluetooth: btmtksdio: explicitly set WHISR as write-1-clear Date: Sat, 9 Oct 2021 06:10:11 +0800 Message-ID: X-Mailer: git-send-email 1.7.9.5 In-Reply-To: References: MIME-Version: 1.0 Content-Type: text/plain X-MTK: N Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Sean Wang That is a preliminary patch to introduce mt7921s support. Explicitly set WHISR as write-1-clear method to all devices that is the expected behavior the driver rely on. Co-developed-by: Mark-yw Chen Signed-off-by: Mark-yw Chen Signed-off-by: Sean Wang --- drivers/bluetooth/btmtksdio.c | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) diff --git a/drivers/bluetooth/btmtksdio.c b/drivers/bluetooth/btmtksdio.c index 77d1c4ac582d..57126a95e292 100644 --- a/drivers/bluetooth/btmtksdio.c +++ b/drivers/bluetooth/btmtksdio.c @@ -487,8 +487,8 @@ static void btmtksdio_interrupt(struct sdio_func *func) static int btmtksdio_open(struct hci_dev *hdev) { struct btmtksdio_dev *bdev = hci_get_drvdata(hdev); + u32 status, val; int err; - u32 status; sdio_claim_host(bdev->func); @@ -533,8 +533,13 @@ static int btmtksdio_open(struct hci_dev *hdev) if (err < 0) goto err_release_irq; - /* Setup write-1-clear for CHISR register */ - sdio_writel(bdev->func, C_INT_CLR_CTRL, MTK_REG_CHCR, &err); + /* Explitly set write-1-clear method */ + val = sdio_readl(bdev->func, MTK_REG_CHCR, &err); + if (err < 0) + goto err_release_irq; + + val |= C_INT_CLR_CTRL; + sdio_writel(bdev->func, val, MTK_REG_CHCR, &err); if (err < 0) goto err_release_irq; -- 2.25.1