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Wed, 17 Jun 2020 11:58:21 +0800 Received: from mtkswgap22.mediatek.inc (172.21.77.33) by mtkcas08.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Wed, 17 Jun 2020 11:58:21 +0800 From: To: Subject: Re: [PATCH v3] tty: serial: don't do termios for BTIF Date: Wed, 17 Jun 2020 11:58:20 +0800 Message-ID: <1592366300-29503-1-git-send-email-sean.wang@mediatek.com> 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-20200616_210841_013074_B6ABDDB5 X-CRM114-Status: UNSURE ( 7.21 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Ryder.Lee@mediatek.com, steven.liu@mediatek.com, arnd@arndb.de, gregkh@linuxfoundation.org, sean.wang@mediatek.com, linux-kernel@vger.kernel.org, linux-mediatek@lists.infradead.org, tthayer@opensource.altera.com, linux-serial@vger.kernel.org, jslaby@suse.com, matthias.bgg@gmail.com, andriy.shevchenko@linux.intel.com, mika.westerberg@linux.intel.com, sr@denx.de, linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org From: Sean Wang >> >> From: Sean Wang >> >> Bluetooth Interface (BTIF) is designed dedicatedly for MediaTek SOC >> with BT in order to be instead of the UART interface between BT module >> and Host CPU, and not exported to user space to access. >> >> As the UART design, BTIF will be an APB slave and can transmit or >> receive data by MCU access, but doesn't provide termios function like >> baudrate and flow control setup. >> >> Even LCR on offset 0xC that is just a FAKELCR a. If FAKELCR[7] is >> equaled to 1, RBR(0x00), THR(0x00), IER(0x04) >> will not be readable/writable. >> >> b. If FAKELCR is equaled to 0xBF, RBR(0x00), THR(0x00), IER(0x04), >> IIR(0x08), and LSR(0x14) will not be readable/writable. >> >> So adding a new capability 'UART_CAP_NTIO' for the unusual unsupported >> case. >> >> Fixes: 1c16ae65e250 ("serial: 8250: of: Add new port type for MediaTek >> BTIF controller on MT7622/23 SoC") >> Cc: Steven Liu > >> Suggested-by: Andy Shevchenko > >I didn't suggest this change. I only commented on the name of the macro. my fault. i will remove the tag from next version. > >> Signed-off-by: Sean Wang >> Signed-off-by: Ryder Lee >> >> -- _______________________________________________ Linux-mediatek mailing list Linux-mediatek@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-mediatek 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 X-Spam-Level: X-Spam-Status: No, score=-6.7 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,UNPARSEABLE_RELAY,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1055AC433E0 for ; Wed, 17 Jun 2020 04:08:46 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id CCF2F2082F for ; Wed, 17 Jun 2020 04:08:44 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="EhKkD7M0"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=mediatek.com header.i=@mediatek.com header.b="pABTy1T7" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org CCF2F2082F Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=mediatek.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=ExZ9R3q66cYtiMKjziNJZybaUlOXJ4O6/piGfNo36Lg=; b=EhKkD7M0XF+jRD TUtEdoL7lhBwPMk8E+WFFtu+cAq9qeOihg3k8DCRBJnsD4FPXe0TCwx336fFO0j/jjExzT1fkO6AE pX15H7d+7zh62KFrVD5U3Dxhhzkmi5DR2HQFR5oYu6qWsQl7sAZXIYD9m6xe16ukCjMbG9uM2flYE Q5oq20o++pfj2uqmxcM7/EpiiMY/VAlqzYNYfSuG4GuKxJoIKDj/8j3bUKlx56hzizgRI+yo7Buy7 UPVM7m4NG23Nom6ruj3HJHKs4mmr8G7pn8Wuptt043qWKDrQM75tL06tXeod/5gzoKVupipPlGtTZ LzrEv2fajgiB82CvPW7Q==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1jlPNU-0001N5-K4; Wed, 17 Jun 2020 04:08:44 +0000 Received: from mailgw01.mediatek.com ([216.200.240.184]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1jlPNQ-0001Ma-VG; Wed, 17 Jun 2020 04:08:42 +0000 X-UUID: 1d786445c1874bd59d4de727291a4d3d-20200616 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mediatek.com; s=dk; h=Content-Transfer-Encoding:Content-Type:MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:CC:To:From; bh=J8u4UWY2G4d5/E7DWKw+p+qbm1PghnIow5Vag4ifkTE=; b=pABTy1T7Xcoou7TOVVET4AwChQc0Yj+mqREDzs2EHOoR3jYdXvGFPNkAs9XeFyHBfo68UXTN2OVL6eBoSeu7NFN7aK4/lU/HPHKwH4XIMWlTentiBsnj/VedVQHPjpeIGV5skLauQ7tHn/pHmnE8BRAzs77W84oZf9o7E9lrSx8=; X-UUID: 1d786445c1874bd59d4de727291a4d3d-20200616 Received: from mtkcas66.mediatek.inc [(172.29.193.44)] by mailgw01.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLS) with ESMTP id 531224116; Tue, 16 Jun 2020 20:08:32 -0800 Received: from MTKMBS02N1.mediatek.inc (172.21.101.77) by MTKMBS62N1.mediatek.inc (172.29.193.41) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Tue, 16 Jun 2020 20:58:32 -0700 Received: from mtkcas08.mediatek.inc (172.21.101.126) by mtkmbs02n1.mediatek.inc (172.21.101.77) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Wed, 17 Jun 2020 11:58:21 +0800 Received: from mtkswgap22.mediatek.inc (172.21.77.33) by mtkcas08.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Wed, 17 Jun 2020 11:58:21 +0800 From: To: Subject: Re: [PATCH v3] tty: serial: don't do termios for BTIF Date: Wed, 17 Jun 2020 11:58:20 +0800 Message-ID: <1592366300-29503-1-git-send-email-sean.wang@mediatek.com> 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-20200616_210841_013074_B6ABDDB5 X-CRM114-Status: UNSURE ( 7.21 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Ryder.Lee@mediatek.com, steven.liu@mediatek.com, arnd@arndb.de, gregkh@linuxfoundation.org, sean.wang@mediatek.com, linux-kernel@vger.kernel.org, linux-mediatek@lists.infradead.org, tthayer@opensource.altera.com, linux-serial@vger.kernel.org, jslaby@suse.com, matthias.bgg@gmail.com, andriy.shevchenko@linux.intel.com, mika.westerberg@linux.intel.com, sr@denx.de, linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org From: Sean Wang >> >> From: Sean Wang >> >> Bluetooth Interface (BTIF) is designed dedicatedly for MediaTek SOC >> with BT in order to be instead of the UART interface between BT module >> and Host CPU, and not exported to user space to access. >> >> As the UART design, BTIF will be an APB slave and can transmit or >> receive data by MCU access, but doesn't provide termios function like >> baudrate and flow control setup. >> >> Even LCR on offset 0xC that is just a FAKELCR a. If FAKELCR[7] is >> equaled to 1, RBR(0x00), THR(0x00), IER(0x04) >> will not be readable/writable. >> >> b. If FAKELCR is equaled to 0xBF, RBR(0x00), THR(0x00), IER(0x04), >> IIR(0x08), and LSR(0x14) will not be readable/writable. >> >> So adding a new capability 'UART_CAP_NTIO' for the unusual unsupported >> case. >> >> Fixes: 1c16ae65e250 ("serial: 8250: of: Add new port type for MediaTek >> BTIF controller on MT7622/23 SoC") >> Cc: Steven Liu > >> Suggested-by: Andy Shevchenko > >I didn't suggest this change. I only commented on the name of the macro. my fault. i will remove the tag from next version. > >> Signed-off-by: Sean Wang >> Signed-off-by: Ryder Lee >> >> -- _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel