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=-6.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS 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 05B4FC3A59D for ; Tue, 20 Aug 2019 12:36:53 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (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 D209822DA7 for ; Tue, 20 Aug 2019 12:36:52 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org D209822DA7 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:37068 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1i03Nb-0007Jz-OX for qemu-devel@archiver.kernel.org; Tue, 20 Aug 2019 08:36:51 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:35930) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1i03La-0005sP-0C for qemu-devel@nongnu.org; Tue, 20 Aug 2019 08:34:46 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1i03LZ-0002R5-1q for qemu-devel@nongnu.org; Tue, 20 Aug 2019 08:34:45 -0400 Received: from mx1.redhat.com ([209.132.183.28]:36156) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1i03LU-0002Bq-W8; Tue, 20 Aug 2019 08:34:41 -0400 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.phx2.redhat.com [10.5.11.16]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 1679789AC2; Tue, 20 Aug 2019 12:34:39 +0000 (UTC) Received: from x1w.redhat.com (unknown [10.40.205.209]) by smtp.corp.redhat.com (Postfix) with ESMTPS id B23CA5C21F; Tue, 20 Aug 2019 12:34:31 +0000 (UTC) From: =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= To: qemu-devel@nongnu.org Date: Tue, 20 Aug 2019 14:34:16 +0200 Message-Id: <20190820123417.27930-2-philmd@redhat.com> In-Reply-To: <20190820123417.27930-1-philmd@redhat.com> References: <20190820123417.27930-1-philmd@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.16 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.26]); Tue, 20 Aug 2019 12:34:39 +0000 (UTC) Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [PATCH 1/2] hw/char/serial: Add a helper to set the divisor register X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Peter Maydell , "Michael S. Tsirkin" , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Andrew Baumann , qemu-arm@nongnu.org, =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= , Paolo Bonzini , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Guenter Roeck Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Some chipsets provide 16650 compatible UART with exhanced features. The BCM2835 provides a register to directly set the baudrate divisor register without having to use the LABD bit. Add a helper to allow models to directly set the divisor. Signed-off-by: Philippe Mathieu-Daud=C3=A9 --- hw/char/serial.c | 6 ++++++ include/hw/char/serial.h | 1 + 2 files changed, 7 insertions(+) diff --git a/hw/char/serial.c b/hw/char/serial.c index b4aa250950..12eb93705d 100644 --- a/hw/char/serial.c +++ b/hw/char/serial.c @@ -191,6 +191,12 @@ static void serial_update_parameters(SerialState *s) speed, parity, data_bits, stop_bits); } =20 +void serial_set_divider(SerialState *s, uint16_t divider) +{ + s->divider =3D divider; + serial_update_parameters(s); +} + static void serial_update_msl(SerialState *s) { uint8_t omsr; diff --git a/include/hw/char/serial.h b/include/hw/char/serial.h index 8be3d8a4f9..ef211f695d 100644 --- a/include/hw/char/serial.h +++ b/include/hw/char/serial.h @@ -83,6 +83,7 @@ extern const MemoryRegionOps serial_io_ops; void serial_realize_core(SerialState *s, Error **errp); void serial_exit_core(SerialState *s); void serial_set_frequency(SerialState *s, uint32_t frequency); +void serial_set_divider(SerialState *s, uint16_t divider); =20 /* legacy pre qom */ SerialState *serial_init(int base, qemu_irq irq, int baudbase, --=20 2.20.1