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=-18.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,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 3BE7FC433E0 for ; Sun, 24 Jan 2021 16:59:11 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id F3CBC22D50 for ; Sun, 24 Jan 2021 16:59:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726609AbhAXQ6f (ORCPT ); Sun, 24 Jan 2021 11:58:35 -0500 Received: from mx1.opensynergy.com ([217.66.60.4]:19120 "EHLO mx1.opensynergy.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726513AbhAXQ4D (ORCPT ); Sun, 24 Jan 2021 11:56:03 -0500 Received: from SR-MAILGATE-02.opensynergy.com (localhost.localdomain [127.0.0.1]) by mx1.opensynergy.com (Proxmox) with ESMTP id 53591A1492; Sun, 24 Jan 2021 17:55:06 +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=ApnEJhDNwnC1 R3cvImKyMRQX15dHR8UZgjnj9KmAoE8=; b=yecTtDcPCJU+xDMSH/Ud4tLJpC1d ZdjJCZVs8QQSZLGC0EE1niGgq3TrWabMLyvHS3h3JSICJSBpimqU08dwFamOhd1a xwwFYfbqnOe/5tTzfz7ptDdl1FKPAv+sOxsS/S3NWmP+31u5t4eCnIg6oh+c6Lc4 r7/r7gmvWV32yyGGtXXHLODmBDQC/iev2SdQAWysNanP2PINM1UDpEsJTBXQNCnR zax7MX3bnadK3cSmV/yLp6oOW600/dSlcyQTHkpz9aJJjrWvUjEacxd1/spBS7Vt 2hdR7XTh1OCrI42RKceQvSgoOjdMIBuFiBjVInie8nRqYyAJk/F1U3rtvQ== From: Anton Yakovlev To: , , CC: "Michael S. Tsirkin" , Jaroslav Kysela , Takashi Iwai , Subject: [PATCH v2 8/9] ALSA: virtio: introduce PCM channel map support Date: Sun, 24 Jan 2021 17:54:07 +0100 Message-ID: <20210124165408.1122868-9-anton.yakovlev@opensynergy.com> X-Mailer: git-send-email 2.30.0 In-Reply-To: <20210124165408.1122868-1-anton.yakovlev@opensynergy.com> References: <20210124165408.1122868-1-anton.yakovlev@opensynergy.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-ClientProxiedBy: SR-MAIL-02.open-synergy.com (10.26.10.22) To SR-MAIL-01.open-synergy.com (10.26.10.21) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Enumerate all available PCM channel maps and create ALSA controls. Signed-off-by: Anton Yakovlev --- sound/virtio/Makefile | 1 + sound/virtio/virtio_card.c | 15 +++ sound/virtio/virtio_card.h | 8 ++ sound/virtio/virtio_chmap.c | 237 ++++++++++++++++++++++++++++++++++++ sound/virtio/virtio_pcm.h | 4 + 5 files changed, 265 insertions(+) create mode 100644 sound/virtio/virtio_chmap.c diff --git a/sound/virtio/Makefile b/sound/virtio/Makefile index 09f485291285..2742bddb8874 100644 --- a/sound/virtio/Makefile +++ b/sound/virtio/Makefile @@ -4,6 +4,7 @@ obj-$(CONFIG_SND_VIRTIO) += virtio_snd.o virtio_snd-objs := \ virtio_card.o \ + virtio_chmap.o \ virtio_ctl_msg.o \ virtio_jack.o \ virtio_pcm.o \ diff --git a/sound/virtio/virtio_card.c b/sound/virtio/virtio_card.c index 1dd709437208..fabf91fc1c9c 100644 --- a/sound/virtio/virtio_card.c +++ b/sound/virtio/virtio_card.c @@ -308,6 +308,10 @@ static int virtsnd_build_devs(struct virtio_snd *snd) if (rc) return rc; + rc = virtsnd_chmap_parse_cfg(snd); + if (rc) + return rc; + if (snd->njacks) { rc = virtsnd_jack_build_devs(snd); if (rc) @@ -320,6 +324,12 @@ static int virtsnd_build_devs(struct virtio_snd *snd) return rc; } + if (snd->nchmaps) { + rc = virtsnd_chmap_build_devs(snd); + if (rc) + return rc; + } + return snd_card_register(snd->card); } @@ -438,6 +448,8 @@ static void virtsnd_remove(struct virtio_device *vdev) if (stream->substreams) devm_kfree(&vdev->dev, stream->substreams); + if (stream->chmaps) + devm_kfree(&vdev->dev, stream->chmaps); } devm_kfree(&vdev->dev, pcm); @@ -449,6 +461,9 @@ static void virtsnd_remove(struct virtio_device *vdev) if (snd->substreams) devm_kfree(&vdev->dev, snd->substreams); + if (snd->chmaps) + devm_kfree(&vdev->dev, snd->chmaps); + devm_kfree(&vdev->dev, snd); vdev->priv = NULL; diff --git a/sound/virtio/virtio_card.h b/sound/virtio/virtio_card.h index df4b0696e8c4..09c6e9ab80ca 100644 --- a/sound/virtio/virtio_card.h +++ b/sound/virtio/virtio_card.h @@ -52,6 +52,8 @@ struct virtio_snd_queue { * @njacks: Number of jacks. * @substreams: VirtIO PCM substreams. * @nsubstreams: Number of PCM substreams. + * @chmaps: VirtIO channel maps. + * @nchmaps: Number of channel maps. */ struct virtio_snd { struct virtio_device *vdev; @@ -65,6 +67,8 @@ struct virtio_snd { unsigned int njacks; struct virtio_pcm_substream *substreams; unsigned int nsubstreams; + struct virtio_snd_chmap_info *chmaps; + unsigned int nchmaps; }; /* Message completion timeout in milliseconds (module parameter). */ @@ -110,4 +114,8 @@ int virtsnd_jack_build_devs(struct virtio_snd *snd); void virtsnd_jack_event(struct virtio_snd *snd, struct virtio_snd_event *event); +int virtsnd_chmap_parse_cfg(struct virtio_snd *snd); + +int virtsnd_chmap_build_devs(struct virtio_snd *snd); + #endif /* VIRTIO_SND_CARD_H */ diff --git a/sound/virtio/virtio_chmap.c b/sound/virtio/virtio_chmap.c new file mode 100644 index 000000000000..8a2ddc4dcffb --- /dev/null +++ b/sound/virtio/virtio_chmap.c @@ -0,0 +1,237 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Sound card driver for virtio + * Copyright (C) 2020 OpenSynergy GmbH + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see . + */ +#include + +#include "virtio_card.h" + +/* VirtIO->ALSA channel position map */ +static const u8 g_v2a_position_map[] = { + [VIRTIO_SND_CHMAP_NONE] = SNDRV_CHMAP_UNKNOWN, + [VIRTIO_SND_CHMAP_NA] = SNDRV_CHMAP_NA, + [VIRTIO_SND_CHMAP_MONO] = SNDRV_CHMAP_MONO, + [VIRTIO_SND_CHMAP_FL] = SNDRV_CHMAP_FL, + [VIRTIO_SND_CHMAP_FR] = SNDRV_CHMAP_FR, + [VIRTIO_SND_CHMAP_RL] = SNDRV_CHMAP_RL, + [VIRTIO_SND_CHMAP_RR] = SNDRV_CHMAP_RR, + [VIRTIO_SND_CHMAP_FC] = SNDRV_CHMAP_FC, + [VIRTIO_SND_CHMAP_LFE] = SNDRV_CHMAP_LFE, + [VIRTIO_SND_CHMAP_SL] = SNDRV_CHMAP_SL, + [VIRTIO_SND_CHMAP_SR] = SNDRV_CHMAP_SR, + [VIRTIO_SND_CHMAP_RC] = SNDRV_CHMAP_RC, + [VIRTIO_SND_CHMAP_FLC] = SNDRV_CHMAP_FLC, + [VIRTIO_SND_CHMAP_FRC] = SNDRV_CHMAP_FRC, + [VIRTIO_SND_CHMAP_RLC] = SNDRV_CHMAP_RLC, + [VIRTIO_SND_CHMAP_RRC] = SNDRV_CHMAP_RRC, + [VIRTIO_SND_CHMAP_FLW] = SNDRV_CHMAP_FLW, + [VIRTIO_SND_CHMAP_FRW] = SNDRV_CHMAP_FRW, + [VIRTIO_SND_CHMAP_FLH] = SNDRV_CHMAP_FLH, + [VIRTIO_SND_CHMAP_FCH] = SNDRV_CHMAP_FCH, + [VIRTIO_SND_CHMAP_FRH] = SNDRV_CHMAP_FRH, + [VIRTIO_SND_CHMAP_TC] = SNDRV_CHMAP_TC, + [VIRTIO_SND_CHMAP_TFL] = SNDRV_CHMAP_TFL, + [VIRTIO_SND_CHMAP_TFR] = SNDRV_CHMAP_TFR, + [VIRTIO_SND_CHMAP_TFC] = SNDRV_CHMAP_TFC, + [VIRTIO_SND_CHMAP_TRL] = SNDRV_CHMAP_TRL, + [VIRTIO_SND_CHMAP_TRR] = SNDRV_CHMAP_TRR, + [VIRTIO_SND_CHMAP_TRC] = SNDRV_CHMAP_TRC, + [VIRTIO_SND_CHMAP_TFLC] = SNDRV_CHMAP_TFLC, + [VIRTIO_SND_CHMAP_TFRC] = SNDRV_CHMAP_TFRC, + [VIRTIO_SND_CHMAP_TSL] = SNDRV_CHMAP_TSL, + [VIRTIO_SND_CHMAP_TSR] = SNDRV_CHMAP_TSR, + [VIRTIO_SND_CHMAP_LLFE] = SNDRV_CHMAP_LLFE, + [VIRTIO_SND_CHMAP_RLFE] = SNDRV_CHMAP_RLFE, + [VIRTIO_SND_CHMAP_BC] = SNDRV_CHMAP_BC, + [VIRTIO_SND_CHMAP_BLC] = SNDRV_CHMAP_BLC, + [VIRTIO_SND_CHMAP_BRC] = SNDRV_CHMAP_BRC +}; + +/** + * virtsnd_chmap_parse_cfg() - Parse the channel map configuration. + * @snd: VirtIO sound device. + * + * This function is called during initial device initialization. + * + * Context: Any context that permits to sleep. + * Return: 0 on success, -errno on failure. + */ +int virtsnd_chmap_parse_cfg(struct virtio_snd *snd) +{ + struct virtio_device *vdev = snd->vdev; + unsigned int i; + int rc; + + virtio_cread(vdev, struct virtio_snd_config, chmaps, &snd->nchmaps); + if (!snd->nchmaps) + return 0; + + snd->chmaps = devm_kcalloc(&vdev->dev, snd->nchmaps, + sizeof(*snd->chmaps), GFP_KERNEL); + if (!snd->chmaps) + return -ENOMEM; + + rc = virtsnd_ctl_query_info(snd, VIRTIO_SND_R_CHMAP_INFO, 0, + snd->nchmaps, sizeof(*snd->chmaps), + snd->chmaps); + if (rc) + return rc; + + /* Count the number of channel maps per each PCM device/stream. */ + for (i = 0; i < snd->nchmaps; ++i) { + struct virtio_snd_chmap_info *info = &snd->chmaps[i]; + unsigned int nid = le32_to_cpu(info->hdr.hda_fn_nid); + struct virtio_pcm *pcm; + struct virtio_pcm_stream *stream; + + pcm = virtsnd_pcm_find_or_create(snd, nid); + if (IS_ERR(pcm)) + return PTR_ERR(pcm); + + switch (info->direction) { + case VIRTIO_SND_D_OUTPUT: { + stream = &pcm->streams[SNDRV_PCM_STREAM_PLAYBACK]; + break; + } + case VIRTIO_SND_D_INPUT: { + stream = &pcm->streams[SNDRV_PCM_STREAM_CAPTURE]; + break; + } + default: { + dev_err(&vdev->dev, + "chmap #%u: unknown direction (%u)\n", i, + info->direction); + return -EINVAL; + } + } + + stream->nchmaps++; + } + + return 0; +} + +/** + * virtsnd_chmap_add_ctls() - Create an ALSA control for channel maps. + * @pcm: ALSA PCM device. + * @direction: PCM stream direction (SNDRV_PCM_STREAM_XXX). + * @stream: VirtIO PCM stream. + * + * Context: Any context. + * Return: 0 on success, -errno on failure. + */ +static int virtsnd_chmap_add_ctls(struct snd_pcm *pcm, int direction, + struct virtio_pcm_stream *stream) +{ + unsigned int i; + int max_channels = 0; + + for (i = 0; i < stream->nchmaps; i++) + if (max_channels < stream->chmaps[i].channels) + max_channels = stream->chmaps[i].channels; + + return snd_pcm_add_chmap_ctls(pcm, direction, stream->chmaps, + max_channels, 0, NULL); +} + +/** + * virtsnd_chmap_build_devs() - Build ALSA controls for channel maps. + * @snd: VirtIO sound device. + * + * Context: Any context. + * Return: 0 on success, -errno on failure. + */ +int virtsnd_chmap_build_devs(struct virtio_snd *snd) +{ + struct virtio_device *vdev = snd->vdev; + struct virtio_pcm *pcm; + struct virtio_pcm_stream *stream; + unsigned int i; + int rc; + + /* Allocate channel map elements per each PCM device/stream. */ + list_for_each_entry(pcm, &snd->pcm_list, list) { + for (i = 0; i < ARRAY_SIZE(pcm->streams); ++i) { + stream = &pcm->streams[i]; + + if (!stream->nchmaps) + continue; + + stream->chmaps = devm_kcalloc(&vdev->dev, + stream->nchmaps + 1, + sizeof(*stream->chmaps), + GFP_KERNEL); + if (!stream->chmaps) + return -ENOMEM; + + stream->nchmaps = 0; + } + } + + /* Initialize channel maps per each PCM device/stream. */ + for (i = 0; i < snd->nchmaps; ++i) { + struct virtio_snd_chmap_info *info = &snd->chmaps[i]; + unsigned int nid = le32_to_cpu(info->hdr.hda_fn_nid); + unsigned int channels = info->channels; + unsigned int ch; + struct snd_pcm_chmap_elem *chmap; + + pcm = virtsnd_pcm_find(snd, nid); + if (IS_ERR(pcm)) + return PTR_ERR(pcm); + + if (info->direction == VIRTIO_SND_D_OUTPUT) + stream = &pcm->streams[SNDRV_PCM_STREAM_PLAYBACK]; + else + stream = &pcm->streams[SNDRV_PCM_STREAM_CAPTURE]; + + chmap = &stream->chmaps[stream->nchmaps++]; + + if (channels > ARRAY_SIZE(chmap->map)) + channels = ARRAY_SIZE(chmap->map); + + chmap->channels = channels; + + for (ch = 0; ch < channels; ++ch) { + u8 position = info->positions[ch]; + + if (position >= ARRAY_SIZE(g_v2a_position_map)) + return -EINVAL; + + chmap->map[ch] = g_v2a_position_map[position]; + } + } + + /* Create an ALSA control per each PCM device/stream. */ + list_for_each_entry(pcm, &snd->pcm_list, list) { + if (!pcm->pcm) + continue; + + for (i = 0; i < ARRAY_SIZE(pcm->streams); ++i) { + stream = &pcm->streams[i]; + + if (!stream->nchmaps) + continue; + + rc = virtsnd_chmap_add_ctls(pcm->pcm, i, stream); + if (rc) + return rc; + } + } + + return 0; +} diff --git a/sound/virtio/virtio_pcm.h b/sound/virtio/virtio_pcm.h index fe467bc05d8b..a326b921b947 100644 --- a/sound/virtio/virtio_pcm.h +++ b/sound/virtio/virtio_pcm.h @@ -70,10 +70,14 @@ struct virtio_pcm_substream { * struct virtio_pcm_stream - VirtIO PCM stream. * @substreams: Virtio substreams belonging to the stream. * @nsubstreams: Number of substreams. + * @chmaps: Kernel channel maps belonging to the stream. + * @nchmaps: Number of channel maps. */ struct virtio_pcm_stream { struct virtio_pcm_substream **substreams; unsigned int nsubstreams; + struct snd_pcm_chmap_elem *chmaps; + unsigned int nchmaps; }; /** -- 2.30.0 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=-16.8 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,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 5CA58C433E0 for ; Sun, 24 Jan 2021 16:58:55 +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 8269322CA2 for ; Sun, 24 Jan 2021 16:58:54 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 8269322CA2 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 1CAA01900; Sun, 24 Jan 2021 17:58:03 +0100 (CET) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa0.perex.cz 1CAA01900 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=alsa-project.org; s=default; t=1611507533; bh=fcHPojcJW9zuQT0bMIUU/fao8p6Qn3v2+xyrGuOj4r0=; h=From:To:Subject:Date:In-Reply-To:References:Cc:List-Id: List-Unsubscribe:List-Archive:List-Post:List-Help:List-Subscribe: From; b=ni4VW5Iaoxj+f0ywoB728Sf6TW8Q7AYXL5zVL7lDDeDP3uEeGO/J8cLjAnk5/RQt6 kOZaMuOB2w+GzKjS6FVUE1KUCcE7E+m2jlI4HAyI8qIyKU7o3zfE22CyzhGd84lPYN X1aYizR7BkAm0K4CtNRbaVYhecun3f9GXZvsTKjU= Received: from alsa1.perex.cz (localhost.localdomain [127.0.0.1]) by alsa1.perex.cz (Postfix) with ESMTP id 5B933F8051C; Sun, 24 Jan 2021 17:55:11 +0100 (CET) Received: by alsa1.perex.cz (Postfix, from userid 50401) id CD9BEF8051D; Sun, 24 Jan 2021 17:55:09 +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 B7391F80518 for ; Sun, 24 Jan 2021 17:55:06 +0100 (CET) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa1.perex.cz B7391F80518 Authentication-Results: alsa1.perex.cz; dkim=pass (2048-bit key) header.d=opensynergy.com header.i=@opensynergy.com header.b="yecTtDcP" Received: from SR-MAILGATE-02.opensynergy.com (localhost.localdomain [127.0.0.1]) by mx1.opensynergy.com (Proxmox) with ESMTP id 53591A1492; Sun, 24 Jan 2021 17:55:06 +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=ApnEJhDNwnC1 R3cvImKyMRQX15dHR8UZgjnj9KmAoE8=; b=yecTtDcPCJU+xDMSH/Ud4tLJpC1d ZdjJCZVs8QQSZLGC0EE1niGgq3TrWabMLyvHS3h3JSICJSBpimqU08dwFamOhd1a xwwFYfbqnOe/5tTzfz7ptDdl1FKPAv+sOxsS/S3NWmP+31u5t4eCnIg6oh+c6Lc4 r7/r7gmvWV32yyGGtXXHLODmBDQC/iev2SdQAWysNanP2PINM1UDpEsJTBXQNCnR zax7MX3bnadK3cSmV/yLp6oOW600/dSlcyQTHkpz9aJJjrWvUjEacxd1/spBS7Vt 2hdR7XTh1OCrI42RKceQvSgoOjdMIBuFiBjVInie8nRqYyAJk/F1U3rtvQ== From: Anton Yakovlev To: , , Subject: [PATCH v2 8/9] ALSA: virtio: introduce PCM channel map support Date: Sun, 24 Jan 2021 17:54:07 +0100 Message-ID: <20210124165408.1122868-9-anton.yakovlev@opensynergy.com> X-Mailer: git-send-email 2.30.0 In-Reply-To: <20210124165408.1122868-1-anton.yakovlev@opensynergy.com> References: <20210124165408.1122868-1-anton.yakovlev@opensynergy.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain 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" Enumerate all available PCM channel maps and create ALSA controls. Signed-off-by: Anton Yakovlev --- sound/virtio/Makefile | 1 + sound/virtio/virtio_card.c | 15 +++ sound/virtio/virtio_card.h | 8 ++ sound/virtio/virtio_chmap.c | 237 ++++++++++++++++++++++++++++++++++++ sound/virtio/virtio_pcm.h | 4 + 5 files changed, 265 insertions(+) create mode 100644 sound/virtio/virtio_chmap.c diff --git a/sound/virtio/Makefile b/sound/virtio/Makefile index 09f485291285..2742bddb8874 100644 --- a/sound/virtio/Makefile +++ b/sound/virtio/Makefile @@ -4,6 +4,7 @@ obj-$(CONFIG_SND_VIRTIO) += virtio_snd.o virtio_snd-objs := \ virtio_card.o \ + virtio_chmap.o \ virtio_ctl_msg.o \ virtio_jack.o \ virtio_pcm.o \ diff --git a/sound/virtio/virtio_card.c b/sound/virtio/virtio_card.c index 1dd709437208..fabf91fc1c9c 100644 --- a/sound/virtio/virtio_card.c +++ b/sound/virtio/virtio_card.c @@ -308,6 +308,10 @@ static int virtsnd_build_devs(struct virtio_snd *snd) if (rc) return rc; + rc = virtsnd_chmap_parse_cfg(snd); + if (rc) + return rc; + if (snd->njacks) { rc = virtsnd_jack_build_devs(snd); if (rc) @@ -320,6 +324,12 @@ static int virtsnd_build_devs(struct virtio_snd *snd) return rc; } + if (snd->nchmaps) { + rc = virtsnd_chmap_build_devs(snd); + if (rc) + return rc; + } + return snd_card_register(snd->card); } @@ -438,6 +448,8 @@ static void virtsnd_remove(struct virtio_device *vdev) if (stream->substreams) devm_kfree(&vdev->dev, stream->substreams); + if (stream->chmaps) + devm_kfree(&vdev->dev, stream->chmaps); } devm_kfree(&vdev->dev, pcm); @@ -449,6 +461,9 @@ static void virtsnd_remove(struct virtio_device *vdev) if (snd->substreams) devm_kfree(&vdev->dev, snd->substreams); + if (snd->chmaps) + devm_kfree(&vdev->dev, snd->chmaps); + devm_kfree(&vdev->dev, snd); vdev->priv = NULL; diff --git a/sound/virtio/virtio_card.h b/sound/virtio/virtio_card.h index df4b0696e8c4..09c6e9ab80ca 100644 --- a/sound/virtio/virtio_card.h +++ b/sound/virtio/virtio_card.h @@ -52,6 +52,8 @@ struct virtio_snd_queue { * @njacks: Number of jacks. * @substreams: VirtIO PCM substreams. * @nsubstreams: Number of PCM substreams. + * @chmaps: VirtIO channel maps. + * @nchmaps: Number of channel maps. */ struct virtio_snd { struct virtio_device *vdev; @@ -65,6 +67,8 @@ struct virtio_snd { unsigned int njacks; struct virtio_pcm_substream *substreams; unsigned int nsubstreams; + struct virtio_snd_chmap_info *chmaps; + unsigned int nchmaps; }; /* Message completion timeout in milliseconds (module parameter). */ @@ -110,4 +114,8 @@ int virtsnd_jack_build_devs(struct virtio_snd *snd); void virtsnd_jack_event(struct virtio_snd *snd, struct virtio_snd_event *event); +int virtsnd_chmap_parse_cfg(struct virtio_snd *snd); + +int virtsnd_chmap_build_devs(struct virtio_snd *snd); + #endif /* VIRTIO_SND_CARD_H */ diff --git a/sound/virtio/virtio_chmap.c b/sound/virtio/virtio_chmap.c new file mode 100644 index 000000000000..8a2ddc4dcffb --- /dev/null +++ b/sound/virtio/virtio_chmap.c @@ -0,0 +1,237 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Sound card driver for virtio + * Copyright (C) 2020 OpenSynergy GmbH + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see . + */ +#include + +#include "virtio_card.h" + +/* VirtIO->ALSA channel position map */ +static const u8 g_v2a_position_map[] = { + [VIRTIO_SND_CHMAP_NONE] = SNDRV_CHMAP_UNKNOWN, + [VIRTIO_SND_CHMAP_NA] = SNDRV_CHMAP_NA, + [VIRTIO_SND_CHMAP_MONO] = SNDRV_CHMAP_MONO, + [VIRTIO_SND_CHMAP_FL] = SNDRV_CHMAP_FL, + [VIRTIO_SND_CHMAP_FR] = SNDRV_CHMAP_FR, + [VIRTIO_SND_CHMAP_RL] = SNDRV_CHMAP_RL, + [VIRTIO_SND_CHMAP_RR] = SNDRV_CHMAP_RR, + [VIRTIO_SND_CHMAP_FC] = SNDRV_CHMAP_FC, + [VIRTIO_SND_CHMAP_LFE] = SNDRV_CHMAP_LFE, + [VIRTIO_SND_CHMAP_SL] = SNDRV_CHMAP_SL, + [VIRTIO_SND_CHMAP_SR] = SNDRV_CHMAP_SR, + [VIRTIO_SND_CHMAP_RC] = SNDRV_CHMAP_RC, + [VIRTIO_SND_CHMAP_FLC] = SNDRV_CHMAP_FLC, + [VIRTIO_SND_CHMAP_FRC] = SNDRV_CHMAP_FRC, + [VIRTIO_SND_CHMAP_RLC] = SNDRV_CHMAP_RLC, + [VIRTIO_SND_CHMAP_RRC] = SNDRV_CHMAP_RRC, + [VIRTIO_SND_CHMAP_FLW] = SNDRV_CHMAP_FLW, + [VIRTIO_SND_CHMAP_FRW] = SNDRV_CHMAP_FRW, + [VIRTIO_SND_CHMAP_FLH] = SNDRV_CHMAP_FLH, + [VIRTIO_SND_CHMAP_FCH] = SNDRV_CHMAP_FCH, + [VIRTIO_SND_CHMAP_FRH] = SNDRV_CHMAP_FRH, + [VIRTIO_SND_CHMAP_TC] = SNDRV_CHMAP_TC, + [VIRTIO_SND_CHMAP_TFL] = SNDRV_CHMAP_TFL, + [VIRTIO_SND_CHMAP_TFR] = SNDRV_CHMAP_TFR, + [VIRTIO_SND_CHMAP_TFC] = SNDRV_CHMAP_TFC, + [VIRTIO_SND_CHMAP_TRL] = SNDRV_CHMAP_TRL, + [VIRTIO_SND_CHMAP_TRR] = SNDRV_CHMAP_TRR, + [VIRTIO_SND_CHMAP_TRC] = SNDRV_CHMAP_TRC, + [VIRTIO_SND_CHMAP_TFLC] = SNDRV_CHMAP_TFLC, + [VIRTIO_SND_CHMAP_TFRC] = SNDRV_CHMAP_TFRC, + [VIRTIO_SND_CHMAP_TSL] = SNDRV_CHMAP_TSL, + [VIRTIO_SND_CHMAP_TSR] = SNDRV_CHMAP_TSR, + [VIRTIO_SND_CHMAP_LLFE] = SNDRV_CHMAP_LLFE, + [VIRTIO_SND_CHMAP_RLFE] = SNDRV_CHMAP_RLFE, + [VIRTIO_SND_CHMAP_BC] = SNDRV_CHMAP_BC, + [VIRTIO_SND_CHMAP_BLC] = SNDRV_CHMAP_BLC, + [VIRTIO_SND_CHMAP_BRC] = SNDRV_CHMAP_BRC +}; + +/** + * virtsnd_chmap_parse_cfg() - Parse the channel map configuration. + * @snd: VirtIO sound device. + * + * This function is called during initial device initialization. + * + * Context: Any context that permits to sleep. + * Return: 0 on success, -errno on failure. + */ +int virtsnd_chmap_parse_cfg(struct virtio_snd *snd) +{ + struct virtio_device *vdev = snd->vdev; + unsigned int i; + int rc; + + virtio_cread(vdev, struct virtio_snd_config, chmaps, &snd->nchmaps); + if (!snd->nchmaps) + return 0; + + snd->chmaps = devm_kcalloc(&vdev->dev, snd->nchmaps, + sizeof(*snd->chmaps), GFP_KERNEL); + if (!snd->chmaps) + return -ENOMEM; + + rc = virtsnd_ctl_query_info(snd, VIRTIO_SND_R_CHMAP_INFO, 0, + snd->nchmaps, sizeof(*snd->chmaps), + snd->chmaps); + if (rc) + return rc; + + /* Count the number of channel maps per each PCM device/stream. */ + for (i = 0; i < snd->nchmaps; ++i) { + struct virtio_snd_chmap_info *info = &snd->chmaps[i]; + unsigned int nid = le32_to_cpu(info->hdr.hda_fn_nid); + struct virtio_pcm *pcm; + struct virtio_pcm_stream *stream; + + pcm = virtsnd_pcm_find_or_create(snd, nid); + if (IS_ERR(pcm)) + return PTR_ERR(pcm); + + switch (info->direction) { + case VIRTIO_SND_D_OUTPUT: { + stream = &pcm->streams[SNDRV_PCM_STREAM_PLAYBACK]; + break; + } + case VIRTIO_SND_D_INPUT: { + stream = &pcm->streams[SNDRV_PCM_STREAM_CAPTURE]; + break; + } + default: { + dev_err(&vdev->dev, + "chmap #%u: unknown direction (%u)\n", i, + info->direction); + return -EINVAL; + } + } + + stream->nchmaps++; + } + + return 0; +} + +/** + * virtsnd_chmap_add_ctls() - Create an ALSA control for channel maps. + * @pcm: ALSA PCM device. + * @direction: PCM stream direction (SNDRV_PCM_STREAM_XXX). + * @stream: VirtIO PCM stream. + * + * Context: Any context. + * Return: 0 on success, -errno on failure. + */ +static int virtsnd_chmap_add_ctls(struct snd_pcm *pcm, int direction, + struct virtio_pcm_stream *stream) +{ + unsigned int i; + int max_channels = 0; + + for (i = 0; i < stream->nchmaps; i++) + if (max_channels < stream->chmaps[i].channels) + max_channels = stream->chmaps[i].channels; + + return snd_pcm_add_chmap_ctls(pcm, direction, stream->chmaps, + max_channels, 0, NULL); +} + +/** + * virtsnd_chmap_build_devs() - Build ALSA controls for channel maps. + * @snd: VirtIO sound device. + * + * Context: Any context. + * Return: 0 on success, -errno on failure. + */ +int virtsnd_chmap_build_devs(struct virtio_snd *snd) +{ + struct virtio_device *vdev = snd->vdev; + struct virtio_pcm *pcm; + struct virtio_pcm_stream *stream; + unsigned int i; + int rc; + + /* Allocate channel map elements per each PCM device/stream. */ + list_for_each_entry(pcm, &snd->pcm_list, list) { + for (i = 0; i < ARRAY_SIZE(pcm->streams); ++i) { + stream = &pcm->streams[i]; + + if (!stream->nchmaps) + continue; + + stream->chmaps = devm_kcalloc(&vdev->dev, + stream->nchmaps + 1, + sizeof(*stream->chmaps), + GFP_KERNEL); + if (!stream->chmaps) + return -ENOMEM; + + stream->nchmaps = 0; + } + } + + /* Initialize channel maps per each PCM device/stream. */ + for (i = 0; i < snd->nchmaps; ++i) { + struct virtio_snd_chmap_info *info = &snd->chmaps[i]; + unsigned int nid = le32_to_cpu(info->hdr.hda_fn_nid); + unsigned int channels = info->channels; + unsigned int ch; + struct snd_pcm_chmap_elem *chmap; + + pcm = virtsnd_pcm_find(snd, nid); + if (IS_ERR(pcm)) + return PTR_ERR(pcm); + + if (info->direction == VIRTIO_SND_D_OUTPUT) + stream = &pcm->streams[SNDRV_PCM_STREAM_PLAYBACK]; + else + stream = &pcm->streams[SNDRV_PCM_STREAM_CAPTURE]; + + chmap = &stream->chmaps[stream->nchmaps++]; + + if (channels > ARRAY_SIZE(chmap->map)) + channels = ARRAY_SIZE(chmap->map); + + chmap->channels = channels; + + for (ch = 0; ch < channels; ++ch) { + u8 position = info->positions[ch]; + + if (position >= ARRAY_SIZE(g_v2a_position_map)) + return -EINVAL; + + chmap->map[ch] = g_v2a_position_map[position]; + } + } + + /* Create an ALSA control per each PCM device/stream. */ + list_for_each_entry(pcm, &snd->pcm_list, list) { + if (!pcm->pcm) + continue; + + for (i = 0; i < ARRAY_SIZE(pcm->streams); ++i) { + stream = &pcm->streams[i]; + + if (!stream->nchmaps) + continue; + + rc = virtsnd_chmap_add_ctls(pcm->pcm, i, stream); + if (rc) + return rc; + } + } + + return 0; +} diff --git a/sound/virtio/virtio_pcm.h b/sound/virtio/virtio_pcm.h index fe467bc05d8b..a326b921b947 100644 --- a/sound/virtio/virtio_pcm.h +++ b/sound/virtio/virtio_pcm.h @@ -70,10 +70,14 @@ struct virtio_pcm_substream { * struct virtio_pcm_stream - VirtIO PCM stream. * @substreams: Virtio substreams belonging to the stream. * @nsubstreams: Number of substreams. + * @chmaps: Kernel channel maps belonging to the stream. + * @nchmaps: Number of channel maps. */ struct virtio_pcm_stream { struct virtio_pcm_substream **substreams; unsigned int nsubstreams; + struct snd_pcm_chmap_elem *chmaps; + unsigned int nchmaps; }; /** -- 2.30.0 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=-16.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_RED,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 9F520C433E0 for ; Sun, 24 Jan 2021 16:55:11 +0000 (UTC) Received: from hemlock.osuosl.org (smtp2.osuosl.org [140.211.166.133]) (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 5E5F122CA2 for ; Sun, 24 Jan 2021 16:55:11 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 5E5F122CA2 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=opensynergy.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=virtualization-bounces@lists.linux-foundation.org Received: from localhost (localhost [127.0.0.1]) by hemlock.osuosl.org (Postfix) with ESMTP id 3B6DA87228; Sun, 24 Jan 2021 16:55:11 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from hemlock.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id rVPsgonrOigo; Sun, 24 Jan 2021 16:55:10 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [140.211.9.56]) by hemlock.osuosl.org (Postfix) with ESMTP id 50434871EE; Sun, 24 Jan 2021 16:55:10 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id 49F36C0FA7; Sun, 24 Jan 2021 16:55:10 +0000 (UTC) Received: from whitealder.osuosl.org (smtp1.osuosl.org [140.211.166.138]) by lists.linuxfoundation.org (Postfix) with ESMTP id DDE0AC013A for ; Sun, 24 Jan 2021 16:55:08 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by whitealder.osuosl.org (Postfix) with ESMTP id CC73D86943 for ; Sun, 24 Jan 2021 16:55:08 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from whitealder.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id qi9j4J+fWPSg for ; Sun, 24 Jan 2021 16:55:07 +0000 (UTC) X-Greylist: domain auto-whitelisted by SQLgrey-1.7.6 Received: from mx1.opensynergy.com (mx1.opensynergy.com [217.66.60.4]) by whitealder.osuosl.org (Postfix) with ESMTPS id AF0A786950 for ; Sun, 24 Jan 2021 16:55:07 +0000 (UTC) Received: from SR-MAILGATE-02.opensynergy.com (localhost.localdomain [127.0.0.1]) by mx1.opensynergy.com (Proxmox) with ESMTP id 53591A1492; Sun, 24 Jan 2021 17:55:06 +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=ApnEJhDNwnC1 R3cvImKyMRQX15dHR8UZgjnj9KmAoE8=; b=yecTtDcPCJU+xDMSH/Ud4tLJpC1d ZdjJCZVs8QQSZLGC0EE1niGgq3TrWabMLyvHS3h3JSICJSBpimqU08dwFamOhd1a xwwFYfbqnOe/5tTzfz7ptDdl1FKPAv+sOxsS/S3NWmP+31u5t4eCnIg6oh+c6Lc4 r7/r7gmvWV32yyGGtXXHLODmBDQC/iev2SdQAWysNanP2PINM1UDpEsJTBXQNCnR zax7MX3bnadK3cSmV/yLp6oOW600/dSlcyQTHkpz9aJJjrWvUjEacxd1/spBS7Vt 2hdR7XTh1OCrI42RKceQvSgoOjdMIBuFiBjVInie8nRqYyAJk/F1U3rtvQ== From: Anton Yakovlev To: , , Subject: [PATCH v2 8/9] ALSA: virtio: introduce PCM channel map support Date: Sun, 24 Jan 2021 17:54:07 +0100 Message-ID: <20210124165408.1122868-9-anton.yakovlev@opensynergy.com> X-Mailer: git-send-email 2.30.0 In-Reply-To: <20210124165408.1122868-1-anton.yakovlev@opensynergy.com> References: <20210124165408.1122868-1-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, Jaroslav Kysela , Takashi Iwai , "Michael S. Tsirkin" X-BeenThere: virtualization@lists.linux-foundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Linux virtualization List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: virtualization-bounces@lists.linux-foundation.org Sender: "Virtualization" Enumerate all available PCM channel maps and create ALSA controls. Signed-off-by: Anton Yakovlev --- sound/virtio/Makefile | 1 + sound/virtio/virtio_card.c | 15 +++ sound/virtio/virtio_card.h | 8 ++ sound/virtio/virtio_chmap.c | 237 ++++++++++++++++++++++++++++++++++++ sound/virtio/virtio_pcm.h | 4 + 5 files changed, 265 insertions(+) create mode 100644 sound/virtio/virtio_chmap.c diff --git a/sound/virtio/Makefile b/sound/virtio/Makefile index 09f485291285..2742bddb8874 100644 --- a/sound/virtio/Makefile +++ b/sound/virtio/Makefile @@ -4,6 +4,7 @@ obj-$(CONFIG_SND_VIRTIO) += virtio_snd.o virtio_snd-objs := \ virtio_card.o \ + virtio_chmap.o \ virtio_ctl_msg.o \ virtio_jack.o \ virtio_pcm.o \ diff --git a/sound/virtio/virtio_card.c b/sound/virtio/virtio_card.c index 1dd709437208..fabf91fc1c9c 100644 --- a/sound/virtio/virtio_card.c +++ b/sound/virtio/virtio_card.c @@ -308,6 +308,10 @@ static int virtsnd_build_devs(struct virtio_snd *snd) if (rc) return rc; + rc = virtsnd_chmap_parse_cfg(snd); + if (rc) + return rc; + if (snd->njacks) { rc = virtsnd_jack_build_devs(snd); if (rc) @@ -320,6 +324,12 @@ static int virtsnd_build_devs(struct virtio_snd *snd) return rc; } + if (snd->nchmaps) { + rc = virtsnd_chmap_build_devs(snd); + if (rc) + return rc; + } + return snd_card_register(snd->card); } @@ -438,6 +448,8 @@ static void virtsnd_remove(struct virtio_device *vdev) if (stream->substreams) devm_kfree(&vdev->dev, stream->substreams); + if (stream->chmaps) + devm_kfree(&vdev->dev, stream->chmaps); } devm_kfree(&vdev->dev, pcm); @@ -449,6 +461,9 @@ static void virtsnd_remove(struct virtio_device *vdev) if (snd->substreams) devm_kfree(&vdev->dev, snd->substreams); + if (snd->chmaps) + devm_kfree(&vdev->dev, snd->chmaps); + devm_kfree(&vdev->dev, snd); vdev->priv = NULL; diff --git a/sound/virtio/virtio_card.h b/sound/virtio/virtio_card.h index df4b0696e8c4..09c6e9ab80ca 100644 --- a/sound/virtio/virtio_card.h +++ b/sound/virtio/virtio_card.h @@ -52,6 +52,8 @@ struct virtio_snd_queue { * @njacks: Number of jacks. * @substreams: VirtIO PCM substreams. * @nsubstreams: Number of PCM substreams. + * @chmaps: VirtIO channel maps. + * @nchmaps: Number of channel maps. */ struct virtio_snd { struct virtio_device *vdev; @@ -65,6 +67,8 @@ struct virtio_snd { unsigned int njacks; struct virtio_pcm_substream *substreams; unsigned int nsubstreams; + struct virtio_snd_chmap_info *chmaps; + unsigned int nchmaps; }; /* Message completion timeout in milliseconds (module parameter). */ @@ -110,4 +114,8 @@ int virtsnd_jack_build_devs(struct virtio_snd *snd); void virtsnd_jack_event(struct virtio_snd *snd, struct virtio_snd_event *event); +int virtsnd_chmap_parse_cfg(struct virtio_snd *snd); + +int virtsnd_chmap_build_devs(struct virtio_snd *snd); + #endif /* VIRTIO_SND_CARD_H */ diff --git a/sound/virtio/virtio_chmap.c b/sound/virtio/virtio_chmap.c new file mode 100644 index 000000000000..8a2ddc4dcffb --- /dev/null +++ b/sound/virtio/virtio_chmap.c @@ -0,0 +1,237 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Sound card driver for virtio + * Copyright (C) 2020 OpenSynergy GmbH + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see . + */ +#include + +#include "virtio_card.h" + +/* VirtIO->ALSA channel position map */ +static const u8 g_v2a_position_map[] = { + [VIRTIO_SND_CHMAP_NONE] = SNDRV_CHMAP_UNKNOWN, + [VIRTIO_SND_CHMAP_NA] = SNDRV_CHMAP_NA, + [VIRTIO_SND_CHMAP_MONO] = SNDRV_CHMAP_MONO, + [VIRTIO_SND_CHMAP_FL] = SNDRV_CHMAP_FL, + [VIRTIO_SND_CHMAP_FR] = SNDRV_CHMAP_FR, + [VIRTIO_SND_CHMAP_RL] = SNDRV_CHMAP_RL, + [VIRTIO_SND_CHMAP_RR] = SNDRV_CHMAP_RR, + [VIRTIO_SND_CHMAP_FC] = SNDRV_CHMAP_FC, + [VIRTIO_SND_CHMAP_LFE] = SNDRV_CHMAP_LFE, + [VIRTIO_SND_CHMAP_SL] = SNDRV_CHMAP_SL, + [VIRTIO_SND_CHMAP_SR] = SNDRV_CHMAP_SR, + [VIRTIO_SND_CHMAP_RC] = SNDRV_CHMAP_RC, + [VIRTIO_SND_CHMAP_FLC] = SNDRV_CHMAP_FLC, + [VIRTIO_SND_CHMAP_FRC] = SNDRV_CHMAP_FRC, + [VIRTIO_SND_CHMAP_RLC] = SNDRV_CHMAP_RLC, + [VIRTIO_SND_CHMAP_RRC] = SNDRV_CHMAP_RRC, + [VIRTIO_SND_CHMAP_FLW] = SNDRV_CHMAP_FLW, + [VIRTIO_SND_CHMAP_FRW] = SNDRV_CHMAP_FRW, + [VIRTIO_SND_CHMAP_FLH] = SNDRV_CHMAP_FLH, + [VIRTIO_SND_CHMAP_FCH] = SNDRV_CHMAP_FCH, + [VIRTIO_SND_CHMAP_FRH] = SNDRV_CHMAP_FRH, + [VIRTIO_SND_CHMAP_TC] = SNDRV_CHMAP_TC, + [VIRTIO_SND_CHMAP_TFL] = SNDRV_CHMAP_TFL, + [VIRTIO_SND_CHMAP_TFR] = SNDRV_CHMAP_TFR, + [VIRTIO_SND_CHMAP_TFC] = SNDRV_CHMAP_TFC, + [VIRTIO_SND_CHMAP_TRL] = SNDRV_CHMAP_TRL, + [VIRTIO_SND_CHMAP_TRR] = SNDRV_CHMAP_TRR, + [VIRTIO_SND_CHMAP_TRC] = SNDRV_CHMAP_TRC, + [VIRTIO_SND_CHMAP_TFLC] = SNDRV_CHMAP_TFLC, + [VIRTIO_SND_CHMAP_TFRC] = SNDRV_CHMAP_TFRC, + [VIRTIO_SND_CHMAP_TSL] = SNDRV_CHMAP_TSL, + [VIRTIO_SND_CHMAP_TSR] = SNDRV_CHMAP_TSR, + [VIRTIO_SND_CHMAP_LLFE] = SNDRV_CHMAP_LLFE, + [VIRTIO_SND_CHMAP_RLFE] = SNDRV_CHMAP_RLFE, + [VIRTIO_SND_CHMAP_BC] = SNDRV_CHMAP_BC, + [VIRTIO_SND_CHMAP_BLC] = SNDRV_CHMAP_BLC, + [VIRTIO_SND_CHMAP_BRC] = SNDRV_CHMAP_BRC +}; + +/** + * virtsnd_chmap_parse_cfg() - Parse the channel map configuration. + * @snd: VirtIO sound device. + * + * This function is called during initial device initialization. + * + * Context: Any context that permits to sleep. + * Return: 0 on success, -errno on failure. + */ +int virtsnd_chmap_parse_cfg(struct virtio_snd *snd) +{ + struct virtio_device *vdev = snd->vdev; + unsigned int i; + int rc; + + virtio_cread(vdev, struct virtio_snd_config, chmaps, &snd->nchmaps); + if (!snd->nchmaps) + return 0; + + snd->chmaps = devm_kcalloc(&vdev->dev, snd->nchmaps, + sizeof(*snd->chmaps), GFP_KERNEL); + if (!snd->chmaps) + return -ENOMEM; + + rc = virtsnd_ctl_query_info(snd, VIRTIO_SND_R_CHMAP_INFO, 0, + snd->nchmaps, sizeof(*snd->chmaps), + snd->chmaps); + if (rc) + return rc; + + /* Count the number of channel maps per each PCM device/stream. */ + for (i = 0; i < snd->nchmaps; ++i) { + struct virtio_snd_chmap_info *info = &snd->chmaps[i]; + unsigned int nid = le32_to_cpu(info->hdr.hda_fn_nid); + struct virtio_pcm *pcm; + struct virtio_pcm_stream *stream; + + pcm = virtsnd_pcm_find_or_create(snd, nid); + if (IS_ERR(pcm)) + return PTR_ERR(pcm); + + switch (info->direction) { + case VIRTIO_SND_D_OUTPUT: { + stream = &pcm->streams[SNDRV_PCM_STREAM_PLAYBACK]; + break; + } + case VIRTIO_SND_D_INPUT: { + stream = &pcm->streams[SNDRV_PCM_STREAM_CAPTURE]; + break; + } + default: { + dev_err(&vdev->dev, + "chmap #%u: unknown direction (%u)\n", i, + info->direction); + return -EINVAL; + } + } + + stream->nchmaps++; + } + + return 0; +} + +/** + * virtsnd_chmap_add_ctls() - Create an ALSA control for channel maps. + * @pcm: ALSA PCM device. + * @direction: PCM stream direction (SNDRV_PCM_STREAM_XXX). + * @stream: VirtIO PCM stream. + * + * Context: Any context. + * Return: 0 on success, -errno on failure. + */ +static int virtsnd_chmap_add_ctls(struct snd_pcm *pcm, int direction, + struct virtio_pcm_stream *stream) +{ + unsigned int i; + int max_channels = 0; + + for (i = 0; i < stream->nchmaps; i++) + if (max_channels < stream->chmaps[i].channels) + max_channels = stream->chmaps[i].channels; + + return snd_pcm_add_chmap_ctls(pcm, direction, stream->chmaps, + max_channels, 0, NULL); +} + +/** + * virtsnd_chmap_build_devs() - Build ALSA controls for channel maps. + * @snd: VirtIO sound device. + * + * Context: Any context. + * Return: 0 on success, -errno on failure. + */ +int virtsnd_chmap_build_devs(struct virtio_snd *snd) +{ + struct virtio_device *vdev = snd->vdev; + struct virtio_pcm *pcm; + struct virtio_pcm_stream *stream; + unsigned int i; + int rc; + + /* Allocate channel map elements per each PCM device/stream. */ + list_for_each_entry(pcm, &snd->pcm_list, list) { + for (i = 0; i < ARRAY_SIZE(pcm->streams); ++i) { + stream = &pcm->streams[i]; + + if (!stream->nchmaps) + continue; + + stream->chmaps = devm_kcalloc(&vdev->dev, + stream->nchmaps + 1, + sizeof(*stream->chmaps), + GFP_KERNEL); + if (!stream->chmaps) + return -ENOMEM; + + stream->nchmaps = 0; + } + } + + /* Initialize channel maps per each PCM device/stream. */ + for (i = 0; i < snd->nchmaps; ++i) { + struct virtio_snd_chmap_info *info = &snd->chmaps[i]; + unsigned int nid = le32_to_cpu(info->hdr.hda_fn_nid); + unsigned int channels = info->channels; + unsigned int ch; + struct snd_pcm_chmap_elem *chmap; + + pcm = virtsnd_pcm_find(snd, nid); + if (IS_ERR(pcm)) + return PTR_ERR(pcm); + + if (info->direction == VIRTIO_SND_D_OUTPUT) + stream = &pcm->streams[SNDRV_PCM_STREAM_PLAYBACK]; + else + stream = &pcm->streams[SNDRV_PCM_STREAM_CAPTURE]; + + chmap = &stream->chmaps[stream->nchmaps++]; + + if (channels > ARRAY_SIZE(chmap->map)) + channels = ARRAY_SIZE(chmap->map); + + chmap->channels = channels; + + for (ch = 0; ch < channels; ++ch) { + u8 position = info->positions[ch]; + + if (position >= ARRAY_SIZE(g_v2a_position_map)) + return -EINVAL; + + chmap->map[ch] = g_v2a_position_map[position]; + } + } + + /* Create an ALSA control per each PCM device/stream. */ + list_for_each_entry(pcm, &snd->pcm_list, list) { + if (!pcm->pcm) + continue; + + for (i = 0; i < ARRAY_SIZE(pcm->streams); ++i) { + stream = &pcm->streams[i]; + + if (!stream->nchmaps) + continue; + + rc = virtsnd_chmap_add_ctls(pcm->pcm, i, stream); + if (rc) + return rc; + } + } + + return 0; +} diff --git a/sound/virtio/virtio_pcm.h b/sound/virtio/virtio_pcm.h index fe467bc05d8b..a326b921b947 100644 --- a/sound/virtio/virtio_pcm.h +++ b/sound/virtio/virtio_pcm.h @@ -70,10 +70,14 @@ struct virtio_pcm_substream { * struct virtio_pcm_stream - VirtIO PCM stream. * @substreams: Virtio substreams belonging to the stream. * @nsubstreams: Number of substreams. + * @chmaps: Kernel channel maps belonging to the stream. + * @nchmaps: Number of channel maps. */ struct virtio_pcm_stream { struct virtio_pcm_substream **substreams; unsigned int nsubstreams; + struct snd_pcm_chmap_elem *chmaps; + unsigned int nchmaps; }; /** -- 2.30.0 _______________________________________________ Virtualization mailing list Virtualization@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/virtualization From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: virtio-dev-return-7951-cohuck=redhat.com@lists.oasis-open.org Sender: List-Post: List-Help: List-Unsubscribe: List-Subscribe: Received: from lists.oasis-open.org (oasis-open.org [10.110.1.242]) by lists.oasis-open.org (Postfix) with ESMTP id 441D4985BF7 for ; Sun, 24 Jan 2021 16:55:08 +0000 (UTC) From: Anton Yakovlev Date: Sun, 24 Jan 2021 17:54:07 +0100 Message-ID: <20210124165408.1122868-9-anton.yakovlev@opensynergy.com> In-Reply-To: <20210124165408.1122868-1-anton.yakovlev@opensynergy.com> References: <20210124165408.1122868-1-anton.yakovlev@opensynergy.com> MIME-Version: 1.0 Subject: [virtio-dev] [PATCH v2 8/9] ALSA: virtio: introduce PCM channel map support Content-Type: text/plain Content-Transfer-Encoding: quoted-printable To: virtualization@lists.linux-foundation.org, alsa-devel@alsa-project.org, virtio-dev@lists.oasis-open.org Cc: "Michael S. Tsirkin" , Jaroslav Kysela , Takashi Iwai , linux-kernel@vger.kernel.org List-ID: Enumerate all available PCM channel maps and create ALSA controls. Signed-off-by: Anton Yakovlev --- sound/virtio/Makefile | 1 + sound/virtio/virtio_card.c | 15 +++ sound/virtio/virtio_card.h | 8 ++ sound/virtio/virtio_chmap.c | 237 ++++++++++++++++++++++++++++++++++++ sound/virtio/virtio_pcm.h | 4 + 5 files changed, 265 insertions(+) create mode 100644 sound/virtio/virtio_chmap.c diff --git a/sound/virtio/Makefile b/sound/virtio/Makefile index 09f485291285..2742bddb8874 100644 --- a/sound/virtio/Makefile +++ b/sound/virtio/Makefile @@ -4,6 +4,7 @@ obj-$(CONFIG_SND_VIRTIO) +=3D virtio_snd.o =20 virtio_snd-objs :=3D \ =09virtio_card.o \ +=09virtio_chmap.o \ =09virtio_ctl_msg.o \ =09virtio_jack.o \ =09virtio_pcm.o \ diff --git a/sound/virtio/virtio_card.c b/sound/virtio/virtio_card.c index 1dd709437208..fabf91fc1c9c 100644 --- a/sound/virtio/virtio_card.c +++ b/sound/virtio/virtio_card.c @@ -308,6 +308,10 @@ static int virtsnd_build_devs(struct virtio_snd *snd) =09if (rc) =09=09return rc; =20 +=09rc =3D virtsnd_chmap_parse_cfg(snd); +=09if (rc) +=09=09return rc; + =09if (snd->njacks) { =09=09rc =3D virtsnd_jack_build_devs(snd); =09=09if (rc) @@ -320,6 +324,12 @@ static int virtsnd_build_devs(struct virtio_snd *snd) =09=09=09return rc; =09} =20 +=09if (snd->nchmaps) { +=09=09rc =3D virtsnd_chmap_build_devs(snd); +=09=09if (rc) +=09=09=09return rc; +=09} + =09return snd_card_register(snd->card); } =20 @@ -438,6 +448,8 @@ static void virtsnd_remove(struct virtio_device *vdev) =20 =09=09=09if (stream->substreams) =09=09=09=09devm_kfree(&vdev->dev, stream->substreams); +=09=09=09if (stream->chmaps) +=09=09=09=09devm_kfree(&vdev->dev, stream->chmaps); =09=09} =20 =09=09devm_kfree(&vdev->dev, pcm); @@ -449,6 +461,9 @@ static void virtsnd_remove(struct virtio_device *vdev) =09if (snd->substreams) =09=09devm_kfree(&vdev->dev, snd->substreams); =20 +=09if (snd->chmaps) +=09=09devm_kfree(&vdev->dev, snd->chmaps); + =09devm_kfree(&vdev->dev, snd); =20 =09vdev->priv =3D NULL; diff --git a/sound/virtio/virtio_card.h b/sound/virtio/virtio_card.h index df4b0696e8c4..09c6e9ab80ca 100644 --- a/sound/virtio/virtio_card.h +++ b/sound/virtio/virtio_card.h @@ -52,6 +52,8 @@ struct virtio_snd_queue { * @njacks: Number of jacks. * @substreams: VirtIO PCM substreams. * @nsubstreams: Number of PCM substreams. + * @chmaps: VirtIO channel maps. + * @nchmaps: Number of channel maps. */ struct virtio_snd { =09struct virtio_device *vdev; @@ -65,6 +67,8 @@ struct virtio_snd { =09unsigned int njacks; =09struct virtio_pcm_substream *substreams; =09unsigned int nsubstreams; +=09struct virtio_snd_chmap_info *chmaps; +=09unsigned int nchmaps; }; =20 /* Message completion timeout in milliseconds (module parameter). */ @@ -110,4 +114,8 @@ int virtsnd_jack_build_devs(struct virtio_snd *snd); void virtsnd_jack_event(struct virtio_snd *snd, =09=09=09struct virtio_snd_event *event); =20 +int virtsnd_chmap_parse_cfg(struct virtio_snd *snd); + +int virtsnd_chmap_build_devs(struct virtio_snd *snd); + #endif /* VIRTIO_SND_CARD_H */ diff --git a/sound/virtio/virtio_chmap.c b/sound/virtio/virtio_chmap.c new file mode 100644 index 000000000000..8a2ddc4dcffb --- /dev/null +++ b/sound/virtio/virtio_chmap.c @@ -0,0 +1,237 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Sound card driver for virtio + * Copyright (C) 2020 OpenSynergy GmbH + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see . + */ +#include + +#include "virtio_card.h" + +/* VirtIO->ALSA channel position map */ +static const u8 g_v2a_position_map[] =3D { +=09[VIRTIO_SND_CHMAP_NONE] =3D SNDRV_CHMAP_UNKNOWN, +=09[VIRTIO_SND_CHMAP_NA] =3D SNDRV_CHMAP_NA, +=09[VIRTIO_SND_CHMAP_MONO] =3D SNDRV_CHMAP_MONO, +=09[VIRTIO_SND_CHMAP_FL] =3D SNDRV_CHMAP_FL, +=09[VIRTIO_SND_CHMAP_FR] =3D SNDRV_CHMAP_FR, +=09[VIRTIO_SND_CHMAP_RL] =3D SNDRV_CHMAP_RL, +=09[VIRTIO_SND_CHMAP_RR] =3D SNDRV_CHMAP_RR, +=09[VIRTIO_SND_CHMAP_FC] =3D SNDRV_CHMAP_FC, +=09[VIRTIO_SND_CHMAP_LFE] =3D SNDRV_CHMAP_LFE, +=09[VIRTIO_SND_CHMAP_SL] =3D SNDRV_CHMAP_SL, +=09[VIRTIO_SND_CHMAP_SR] =3D SNDRV_CHMAP_SR, +=09[VIRTIO_SND_CHMAP_RC] =3D SNDRV_CHMAP_RC, +=09[VIRTIO_SND_CHMAP_FLC] =3D SNDRV_CHMAP_FLC, +=09[VIRTIO_SND_CHMAP_FRC] =3D SNDRV_CHMAP_FRC, +=09[VIRTIO_SND_CHMAP_RLC] =3D SNDRV_CHMAP_RLC, +=09[VIRTIO_SND_CHMAP_RRC] =3D SNDRV_CHMAP_RRC, +=09[VIRTIO_SND_CHMAP_FLW] =3D SNDRV_CHMAP_FLW, +=09[VIRTIO_SND_CHMAP_FRW] =3D SNDRV_CHMAP_FRW, +=09[VIRTIO_SND_CHMAP_FLH] =3D SNDRV_CHMAP_FLH, +=09[VIRTIO_SND_CHMAP_FCH] =3D SNDRV_CHMAP_FCH, +=09[VIRTIO_SND_CHMAP_FRH] =3D SNDRV_CHMAP_FRH, +=09[VIRTIO_SND_CHMAP_TC] =3D SNDRV_CHMAP_TC, +=09[VIRTIO_SND_CHMAP_TFL] =3D SNDRV_CHMAP_TFL, +=09[VIRTIO_SND_CHMAP_TFR] =3D SNDRV_CHMAP_TFR, +=09[VIRTIO_SND_CHMAP_TFC] =3D SNDRV_CHMAP_TFC, +=09[VIRTIO_SND_CHMAP_TRL] =3D SNDRV_CHMAP_TRL, +=09[VIRTIO_SND_CHMAP_TRR] =3D SNDRV_CHMAP_TRR, +=09[VIRTIO_SND_CHMAP_TRC] =3D SNDRV_CHMAP_TRC, +=09[VIRTIO_SND_CHMAP_TFLC] =3D SNDRV_CHMAP_TFLC, +=09[VIRTIO_SND_CHMAP_TFRC] =3D SNDRV_CHMAP_TFRC, +=09[VIRTIO_SND_CHMAP_TSL] =3D SNDRV_CHMAP_TSL, +=09[VIRTIO_SND_CHMAP_TSR] =3D SNDRV_CHMAP_TSR, +=09[VIRTIO_SND_CHMAP_LLFE] =3D SNDRV_CHMAP_LLFE, +=09[VIRTIO_SND_CHMAP_RLFE] =3D SNDRV_CHMAP_RLFE, +=09[VIRTIO_SND_CHMAP_BC] =3D SNDRV_CHMAP_BC, +=09[VIRTIO_SND_CHMAP_BLC] =3D SNDRV_CHMAP_BLC, +=09[VIRTIO_SND_CHMAP_BRC] =3D SNDRV_CHMAP_BRC +}; + +/** + * virtsnd_chmap_parse_cfg() - Parse the channel map configuration. + * @snd: VirtIO sound device. + * + * This function is called during initial device initialization. + * + * Context: Any context that permits to sleep. + * Return: 0 on success, -errno on failure. + */ +int virtsnd_chmap_parse_cfg(struct virtio_snd *snd) +{ +=09struct virtio_device *vdev =3D snd->vdev; +=09unsigned int i; +=09int rc; + +=09virtio_cread(vdev, struct virtio_snd_config, chmaps, &snd->nchmaps); +=09if (!snd->nchmaps) +=09=09return 0; + +=09snd->chmaps =3D devm_kcalloc(&vdev->dev, snd->nchmaps, +=09=09=09=09 sizeof(*snd->chmaps), GFP_KERNEL); +=09if (!snd->chmaps) +=09=09return -ENOMEM; + +=09rc =3D virtsnd_ctl_query_info(snd, VIRTIO_SND_R_CHMAP_INFO, 0, +=09=09=09=09 snd->nchmaps, sizeof(*snd->chmaps), +=09=09=09=09 snd->chmaps); +=09if (rc) +=09=09return rc; + +=09/* Count the number of channel maps per each PCM device/stream. */ +=09for (i =3D 0; i < snd->nchmaps; ++i) { +=09=09struct virtio_snd_chmap_info *info =3D &snd->chmaps[i]; +=09=09unsigned int nid =3D le32_to_cpu(info->hdr.hda_fn_nid); +=09=09struct virtio_pcm *pcm; +=09=09struct virtio_pcm_stream *stream; + +=09=09pcm =3D virtsnd_pcm_find_or_create(snd, nid); +=09=09if (IS_ERR(pcm)) +=09=09=09return PTR_ERR(pcm); + +=09=09switch (info->direction) { +=09=09case VIRTIO_SND_D_OUTPUT: { +=09=09=09stream =3D &pcm->streams[SNDRV_PCM_STREAM_PLAYBACK]; +=09=09=09break; +=09=09} +=09=09case VIRTIO_SND_D_INPUT: { +=09=09=09stream =3D &pcm->streams[SNDRV_PCM_STREAM_CAPTURE]; +=09=09=09break; +=09=09} +=09=09default: { +=09=09=09dev_err(&vdev->dev, +=09=09=09=09"chmap #%u: unknown direction (%u)\n", i, +=09=09=09=09info->direction); +=09=09=09return -EINVAL; +=09=09} +=09=09} + +=09=09stream->nchmaps++; +=09} + +=09return 0; +} + +/** + * virtsnd_chmap_add_ctls() - Create an ALSA control for channel maps. + * @pcm: ALSA PCM device. + * @direction: PCM stream direction (SNDRV_PCM_STREAM_XXX). + * @stream: VirtIO PCM stream. + * + * Context: Any context. + * Return: 0 on success, -errno on failure. + */ +static int virtsnd_chmap_add_ctls(struct snd_pcm *pcm, int direction, +=09=09=09=09 struct virtio_pcm_stream *stream) +{ +=09unsigned int i; +=09int max_channels =3D 0; + +=09for (i =3D 0; i < stream->nchmaps; i++) +=09=09if (max_channels < stream->chmaps[i].channels) +=09=09=09max_channels =3D stream->chmaps[i].channels; + +=09return snd_pcm_add_chmap_ctls(pcm, direction, stream->chmaps, +=09=09=09=09 max_channels, 0, NULL); +} + +/** + * virtsnd_chmap_build_devs() - Build ALSA controls for channel maps. + * @snd: VirtIO sound device. + * + * Context: Any context. + * Return: 0 on success, -errno on failure. + */ +int virtsnd_chmap_build_devs(struct virtio_snd *snd) +{ +=09struct virtio_device *vdev =3D snd->vdev; +=09struct virtio_pcm *pcm; +=09struct virtio_pcm_stream *stream; +=09unsigned int i; +=09int rc; + +=09/* Allocate channel map elements per each PCM device/stream. */ +=09list_for_each_entry(pcm, &snd->pcm_list, list) { +=09=09for (i =3D 0; i < ARRAY_SIZE(pcm->streams); ++i) { +=09=09=09stream =3D &pcm->streams[i]; + +=09=09=09if (!stream->nchmaps) +=09=09=09=09continue; + +=09=09=09stream->chmaps =3D devm_kcalloc(&vdev->dev, +=09=09=09=09=09=09 stream->nchmaps + 1, +=09=09=09=09=09=09 sizeof(*stream->chmaps), +=09=09=09=09=09=09 GFP_KERNEL); +=09=09=09if (!stream->chmaps) +=09=09=09=09return -ENOMEM; + +=09=09=09stream->nchmaps =3D 0; +=09=09} +=09} + +=09/* Initialize channel maps per each PCM device/stream. */ +=09for (i =3D 0; i < snd->nchmaps; ++i) { +=09=09struct virtio_snd_chmap_info *info =3D &snd->chmaps[i]; +=09=09unsigned int nid =3D le32_to_cpu(info->hdr.hda_fn_nid); +=09=09unsigned int channels =3D info->channels; +=09=09unsigned int ch; +=09=09struct snd_pcm_chmap_elem *chmap; + +=09=09pcm =3D virtsnd_pcm_find(snd, nid); +=09=09if (IS_ERR(pcm)) +=09=09=09return PTR_ERR(pcm); + +=09=09if (info->direction =3D=3D VIRTIO_SND_D_OUTPUT) +=09=09=09stream =3D &pcm->streams[SNDRV_PCM_STREAM_PLAYBACK]; +=09=09else +=09=09=09stream =3D &pcm->streams[SNDRV_PCM_STREAM_CAPTURE]; + +=09=09chmap =3D &stream->chmaps[stream->nchmaps++]; + +=09=09if (channels > ARRAY_SIZE(chmap->map)) +=09=09=09channels =3D ARRAY_SIZE(chmap->map); + +=09=09chmap->channels =3D channels; + +=09=09for (ch =3D 0; ch < channels; ++ch) { +=09=09=09u8 position =3D info->positions[ch]; + +=09=09=09if (position >=3D ARRAY_SIZE(g_v2a_position_map)) +=09=09=09=09return -EINVAL; + +=09=09=09chmap->map[ch] =3D g_v2a_position_map[position]; +=09=09} +=09} + +=09/* Create an ALSA control per each PCM device/stream. */ +=09list_for_each_entry(pcm, &snd->pcm_list, list) { +=09=09if (!pcm->pcm) +=09=09=09continue; + +=09=09for (i =3D 0; i < ARRAY_SIZE(pcm->streams); ++i) { +=09=09=09stream =3D &pcm->streams[i]; + +=09=09=09if (!stream->nchmaps) +=09=09=09=09continue; + +=09=09=09rc =3D virtsnd_chmap_add_ctls(pcm->pcm, i, stream); +=09=09=09if (rc) +=09=09=09=09return rc; +=09=09} +=09} + +=09return 0; +} diff --git a/sound/virtio/virtio_pcm.h b/sound/virtio/virtio_pcm.h index fe467bc05d8b..a326b921b947 100644 --- a/sound/virtio/virtio_pcm.h +++ b/sound/virtio/virtio_pcm.h @@ -70,10 +70,14 @@ struct virtio_pcm_substream { * struct virtio_pcm_stream - VirtIO PCM stream. * @substreams: Virtio substreams belonging to the stream. * @nsubstreams: Number of substreams. + * @chmaps: Kernel channel maps belonging to the stream. + * @nchmaps: Number of channel maps. */ struct virtio_pcm_stream { =09struct virtio_pcm_substream **substreams; =09unsigned int nsubstreams; +=09struct snd_pcm_chmap_elem *chmaps; +=09unsigned int nchmaps; }; =20 /** --=20 2.30.0 --------------------------------------------------------------------- To unsubscribe, e-mail: virtio-dev-unsubscribe@lists.oasis-open.org For additional commands, e-mail: virtio-dev-help@lists.oasis-open.org