From nobody Wed Dec 17 08:50:58 2025 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zohomail.com; spf=pass (zoho.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=redhat.com ARC-Seal: i=1; a=rsa-sha256; t=1566304621; cv=none; d=zoho.com; s=zohoarc; b=Nys8CAVUiT17vPP6lzMIOuBf7sf/Zqio3rC5wYISQnryhGeRFJ/ElUhO31gQf2XBZAdSSYaRi8OeyzsgyRePCSaHU6tfGfRyHBxA8sEPoSnUKqMO2SRC5yq9X5mMqSJi4zoA+K2rb2V2IhREcNirLCuaUX4Vy8rTZTk09e5Wozw= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zoho.com; s=zohoarc; t=1566304621; h=Content-Type:Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To:ARC-Authentication-Results; bh=IcHRtU8j5UjBsD5HZGR2ATlFu3cbetgICUnsM5712ko=; b=D/N9Fon1OrF6vyXop44yrY5XlO+24/H+Cv7NR1DjQme6chydzk8URdEhe89u0ovyDvyhVNQIrpmrgwc92YmcmpcDyz/HspxRRdUorT+PbxbrCMYWI8ZSdy+WciRp8+x/3rluJoSMzKYpQrKePbkwC/twb1v2Bw1I9kEyyX579fQ= ARC-Authentication-Results: i=1; mx.zoho.com; spf=pass (zoho.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail header.from= (p=none dis=none) header.from= Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1566304621240245.12397086223154; Tue, 20 Aug 2019 05:37:01 -0700 (PDT) Received: from localhost ([::1]:37068 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1i03Nf-0007Jz-6u for importer@patchew.org; Tue, 20 Aug 2019 08:36:55 -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 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+importer=patchew.org@nongnu.org Sender: "Qemu-devel" Content-Type: text/plain; charset="utf-8" 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