From patchwork Sun Sep 17 06:58:06 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Volker_R=C3=BCmelin?= X-Patchwork-Id: 13388542 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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 8C413CD37B4 for ; Sun, 17 Sep 2023 06:59:33 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qhljZ-0006qB-UU; Sun, 17 Sep 2023 02:58:21 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qhljX-0006ph-Uu; Sun, 17 Sep 2023 02:58:19 -0400 Received: from mailout05.t-online.de ([194.25.134.82]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qhljW-0004y4-9i; Sun, 17 Sep 2023 02:58:19 -0400 Received: from fwd86.aul.t-online.de (fwd86.aul.t-online.de [10.223.144.112]) by mailout05.t-online.de (Postfix) with SMTP id 7A5204338; Sun, 17 Sep 2023 08:58:14 +0200 (CEST) Received: from linpower.localnet ([79.208.31.89]) by fwd86.t-online.de with (TLSv1.3:TLS_AES_256_GCM_SHA384 encrypted) esmtp id 1qhljR-2zr8Sn0; Sun, 17 Sep 2023 08:58:14 +0200 Received: by linpower.localnet (Postfix, from userid 1000) id 9512020027A; Sun, 17 Sep 2023 08:58:13 +0200 (CEST) From: =?utf-8?q?Volker_R=C3=BCmelin?= To: Gerd Hoffmann Cc: =?utf-8?q?Marc-Andr=C3=A9_Lureau?= , =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= , BALATON Zoltan , qemu-devel@nongnu.org, qemu-stable@nongnu.org Subject: [PATCH 1/8] hw/audio/es1370: reset current sample counter Date: Sun, 17 Sep 2023 08:58:06 +0200 Message-Id: <20230917065813.6692-1-vr_qemu@t-online.de> X-Mailer: git-send-email 2.35.3 In-Reply-To: References: MIME-Version: 1.0 X-TOI-EXPURGATEID: 150726::1694933894-0592EEBC-39B5DE82/0/0 CLEAN NORMAL X-TOI-MSGID: 906388a9-a312-4720-b4b8-98d2ef9832a8 Received-SPF: none client-ip=194.25.134.82; envelope-from=volker.ruemelin@t-online.de; helo=mailout05.t-online.de X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_NONE=0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Reset the current sample counter when writing the Channel Sample Count Register. The Linux ens1370 driver and the AROS sb128 driver expect the current sample counter counts down from sample count to 0 after a write to the Channel Sample Count Register. Currently the current sample counter starts from 0 after a reset or the last count when the counter was stopped. The current sample counter is used to raise an interrupt whenever a complete buffer was transferred. When the counter starts with a value lower than the reload value, the interrupt triggeres before the buffer was completly transferred. This may lead to corrupted audio streams. Tested-by: Rene Engel Signed-off-by: Volker Rümelin --- hw/audio/es1370.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/hw/audio/es1370.c b/hw/audio/es1370.c index 4f738a0ad8..9a8e29c39c 100644 --- a/hw/audio/es1370.c +++ b/hw/audio/es1370.c @@ -502,7 +502,7 @@ static void es1370_write(void *opaque, hwaddr addr, uint64_t val, unsigned size) case ES1370_REG_DAC2_SCOUNT: case ES1370_REG_ADC_SCOUNT: d += (addr - ES1370_REG_DAC1_SCOUNT) >> 2; - d->scount = (val & 0xffff) | (d->scount & ~0xffff); + d->scount = (val & 0xffff) << 16 | (val & 0xffff); ldebug ("chan %td CURR_SAMP_CT %d, SAMP_CT %d\n", d - &s->chan[0], val >> 16, (val & 0xffff)); break;