From patchwork Tue Mar 2 16:47:09 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Anton Yakovlev X-Patchwork-Id: 12111919 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=-16.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable 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 9260EC433E0 for ; Tue, 2 Mar 2021 16:52:31 +0000 (UTC) Received: from alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) (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 E9EF664EF4 for ; Tue, 2 Mar 2021 16:52:30 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org E9EF664EF4 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=opensynergy.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=alsa-devel-bounces@alsa-project.org Received: from alsa1.perex.cz (alsa1.perex.cz [207.180.221.201]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by alsa0.perex.cz (Postfix) with ESMTPS id 82D4917A6; Tue, 2 Mar 2021 17:51:39 +0100 (CET) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa0.perex.cz 82D4917A6 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=alsa-project.org; s=default; t=1614703949; bh=W1hhMKaE/bOZoh3Js+Wf2kk4766qAZ+utI38/5sdTkw=; h=From:To:Subject:Date:In-Reply-To:References:Cc:List-Id: List-Unsubscribe:List-Archive:List-Post:List-Help:List-Subscribe: From; b=jAoswG78w1XqoMyo98/OC2CFyxFFNraGlgHKoGELntQi402Z8hii2ttGpfLVOL/ce Tws17+g/f3gz2SyHsXfLaEYHCBcatOKsmRSKqbsORR0f8syQ92f/fV4jeQh9hRcEdZ bW+z5SvahimcVroJU+jhd3R9z0Z2q+O2Vbep28tU= Received: from alsa1.perex.cz (localhost.localdomain [127.0.0.1]) by alsa1.perex.cz (Postfix) with ESMTP id C47F8F804F3; Tue, 2 Mar 2021 17:48:10 +0100 (CET) Received: by alsa1.perex.cz (Postfix, from userid 50401) id D1098F804FA; Tue, 2 Mar 2021 17:48:08 +0100 (CET) Received: from mx1.opensynergy.com (mx1.opensynergy.com [217.66.60.4]) (using TLSv1.2 with cipher ADH-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by alsa1.perex.cz (Postfix) with ESMTPS id 3F650F804EC for ; Tue, 2 Mar 2021 17:48:02 +0100 (CET) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa1.perex.cz 3F650F804EC Authentication-Results: alsa1.perex.cz; dkim=pass (2048-bit key) header.d=opensynergy.com header.i=@opensynergy.com header.b="GQmy+uqT" Received: from SR-MAILGATE-02.opensynergy.com (localhost.localdomain [127.0.0.1]) by mx1.opensynergy.com (Proxmox) with ESMTP id D10B9A17C5; Tue, 2 Mar 2021 17:48:01 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=opensynergy.com; h=cc:cc:content-transfer-encoding:content-type:content-type :date:from:from:in-reply-to:message-id:mime-version:references :reply-to:subject:subject:to:to; s=srmailgate02; bh=Iq2O+faTDVb2 vlZ2E3J4cQ1DqJ4S6FQ6CtKxj20OPQk=; b=GQmy+uqTDKQMXUfXaTOMxHbzM90U Xc12b7KSYDXBgpIBWyic2EXqMqnCUxPk524Jtg+/ttlnits6oevMe0UEhs0kZ3G6 fLPxvbCMKlqGQREzs8NC4Tf2vDS8VuvGUqdtoXqyNOXlbP7ZJrxFDdMoY8UNQ1Jf Gom5ot4aEZLMb/yVb4I0vThpupY/Ubn3h//xuliIuM8i9XZLjKy8rx8lIG/RkBzz wr0TSgASOkRarqr3Q7H2EsUEdDgxVD2os7bIJzQ/hfmdrIOc1JLQ6IhxAGO3b6QY ynoyIAXC/u5I3NueXPuwGKyOPVbXdH1mvIopY8o+efoknKEN8NMq/4hhsQ== From: Anton Yakovlev To: , , Subject: [PATCH v7 9/9] ALSA: virtio: introduce device suspend/resume support Date: Tue, 2 Mar 2021 17:47:09 +0100 Message-ID: <20210302164709.3142702-10-anton.yakovlev@opensynergy.com> X-Mailer: git-send-email 2.30.1 In-Reply-To: <20210302164709.3142702-1-anton.yakovlev@opensynergy.com> References: <20210302164709.3142702-1-anton.yakovlev@opensynergy.com> MIME-Version: 1.0 X-ClientProxiedBy: SR-MAIL-02.open-synergy.com (10.26.10.22) To SR-MAIL-01.open-synergy.com (10.26.10.21) Cc: linux-kernel@vger.kernel.org, Takashi Iwai , "Michael S. Tsirkin" X-BeenThere: alsa-devel@alsa-project.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: alsa-devel-bounces@alsa-project.org Sender: "Alsa-devel" All running PCM substreams are stopped on device suspend and restarted on device resume. Signed-off-by: Anton Yakovlev --- sound/virtio/virtio_card.c | 56 +++++++++++++++++++++++++++++++++++ sound/virtio/virtio_pcm.h | 3 ++ sound/virtio/virtio_pcm_ops.c | 33 ++++++++++++++++----- 3 files changed, 85 insertions(+), 7 deletions(-) diff --git a/sound/virtio/virtio_card.c b/sound/virtio/virtio_card.c index 1c03fcc41c3b..ae9128063917 100644 --- a/sound/virtio/virtio_card.c +++ b/sound/virtio/virtio_card.c @@ -362,6 +362,58 @@ static void virtsnd_remove(struct virtio_device *vdev) kfree(snd->event_msgs); } +#ifdef CONFIG_PM_SLEEP +/** + * virtsnd_freeze() - Suspend device. + * @vdev: VirtIO parent device. + * + * Context: Any context. + * Return: 0 on success, -errno on failure. + */ +static int virtsnd_freeze(struct virtio_device *vdev) +{ + struct virtio_snd *snd = vdev->priv; + unsigned int i; + + virtsnd_disable_event_vq(snd); + virtsnd_ctl_msg_cancel_all(snd); + + vdev->config->del_vqs(vdev); + vdev->config->reset(vdev); + + for (i = 0; i < snd->nsubstreams; ++i) + cancel_work_sync(&snd->substreams[i].elapsed_period); + + kfree(snd->event_msgs); + snd->event_msgs = NULL; + + return 0; +} + +/** + * virtsnd_restore() - Resume device. + * @vdev: VirtIO parent device. + * + * Context: Any context. + * Return: 0 on success, -errno on failure. + */ +static int virtsnd_restore(struct virtio_device *vdev) +{ + struct virtio_snd *snd = vdev->priv; + int rc; + + rc = virtsnd_find_vqs(snd); + if (rc) + return rc; + + virtio_device_ready(vdev); + + virtsnd_enable_event_vq(snd); + + return 0; +} +#endif /* CONFIG_PM_SLEEP */ + static const struct virtio_device_id id_table[] = { { VIRTIO_ID_SOUND, VIRTIO_DEV_ANY_ID }, { 0 }, @@ -374,6 +426,10 @@ static struct virtio_driver virtsnd_driver = { .validate = virtsnd_validate, .probe = virtsnd_probe, .remove = virtsnd_remove, +#ifdef CONFIG_PM_SLEEP + .freeze = virtsnd_freeze, + .restore = virtsnd_restore, +#endif }; static int __init init(void) diff --git a/sound/virtio/virtio_pcm.h b/sound/virtio/virtio_pcm.h index 1353fdc9bd69..062eb8e8f2cf 100644 --- a/sound/virtio/virtio_pcm.h +++ b/sound/virtio/virtio_pcm.h @@ -31,6 +31,8 @@ struct virtio_pcm_msg; * @xfer_xrun: Data underflow/overflow state (0 - no xrun, 1 - xrun). * @stopped: True if the substream is stopped and must be released on the device * side. + * @suspended: True if the substream is suspended and must be reconfigured on + * the device side at resume. * @msgs: Allocated I/O messages. * @nmsgs: Number of allocated I/O messages. * @msg_last_enqueued: Index of the last I/O message added to the virtqueue. @@ -52,6 +54,7 @@ struct virtio_pcm_substream { bool xfer_enabled; bool xfer_xrun; bool stopped; + bool suspended; struct virtio_pcm_msg **msgs; unsigned int nmsgs; int msg_last_enqueued; diff --git a/sound/virtio/virtio_pcm_ops.c b/sound/virtio/virtio_pcm_ops.c index 0682a2df6c8c..f8bfb87624be 100644 --- a/sound/virtio/virtio_pcm_ops.c +++ b/sound/virtio/virtio_pcm_ops.c @@ -115,6 +115,7 @@ static int virtsnd_pcm_open(struct snd_pcm_substream *substream) SNDRV_PCM_HW_PARAM_PERIODS); vss->stopped = !!virtsnd_pcm_msg_pending_num(vss); + vss->suspended = false; /* * If the substream has already been used, then the I/O queue may be in @@ -272,16 +273,31 @@ static int virtsnd_pcm_prepare(struct snd_pcm_substream *substream) struct virtio_device *vdev = vss->snd->vdev; struct virtio_snd_msg *msg; - if (virtsnd_pcm_msg_pending_num(vss)) { - dev_err(&vdev->dev, "SID %u: invalid I/O queue state\n", - vss->sid); - return -EBADFD; + if (!vss->suspended) { + if (virtsnd_pcm_msg_pending_num(vss)) { + dev_err(&vdev->dev, "SID %u: invalid I/O queue state\n", + vss->sid); + return -EBADFD; + } + + vss->buffer_bytes = snd_pcm_lib_buffer_bytes(substream); + vss->hw_ptr = 0; + vss->msg_last_enqueued = -1; + } else { + struct snd_pcm_runtime *runtime = substream->runtime; + unsigned int buffer_bytes = snd_pcm_lib_buffer_bytes(substream); + unsigned int period_bytes = snd_pcm_lib_period_bytes(substream); + int rc; + + rc = virtsnd_pcm_dev_set_params(vss, buffer_bytes, period_bytes, + runtime->channels, + runtime->format, runtime->rate); + if (rc) + return rc; } - vss->buffer_bytes = snd_pcm_lib_buffer_bytes(substream); - vss->hw_ptr = 0; vss->xfer_xrun = false; - vss->msg_last_enqueued = -1; + vss->suspended = false; vss->msg_count = 0; msg = virtsnd_pcm_ctl_msg_alloc(vss, VIRTIO_SND_R_PCM_PREPARE, @@ -336,6 +352,9 @@ static int virtsnd_pcm_trigger(struct snd_pcm_substream *substream, int command) } return virtsnd_ctl_msg_send_sync(snd, msg); + case SNDRV_PCM_TRIGGER_SUSPEND: + vss->suspended = true; + fallthrough; case SNDRV_PCM_TRIGGER_STOP: vss->stopped = true; fallthrough;