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=-9.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, 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 1D139C54FCB for ; Mon, 27 Apr 2020 17:19:55 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 03EFD20738 for ; Mon, 27 Apr 2020 17:19:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726491AbgD0RTx (ORCPT ); Mon, 27 Apr 2020 13:19:53 -0400 Received: from mga04.intel.com ([192.55.52.120]:16042 "EHLO mga04.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726315AbgD0RTw (ORCPT ); Mon, 27 Apr 2020 13:19:52 -0400 IronPort-SDR: 7BF6iMFpRFjmHMTzozqjpLI1I4KOExEGhEQUlxZRmM/U8+he/Z7P4HpAPlFYIxqveFwyeX9KaT li8DtKr41XgQ== X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga006.fm.intel.com ([10.253.24.20]) by fmsmga104.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 27 Apr 2020 10:19:52 -0700 IronPort-SDR: qR4Kl7iDwe7OCTiKka/OGaDhPkyxZ18YZCLRxTbtSWsWKtqfp0T/neuElK3JEllXJqS27rrYAz ywtDQtVCwyAQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.73,324,1583222400"; d="scan'208";a="458932358" Received: from brentlu-desk0.itwn.intel.com ([10.5.253.11]) by fmsmga006.fm.intel.com with ESMTP; 27 Apr 2020 10:19:49 -0700 From: Brent Lu To: alsa-devel@alsa-project.org Cc: Cezary Rojewski , Pierre-Louis Bossart , Liam Girdwood , Jie Yang , Mark Brown , Jaroslav Kysela , Takashi Iwai , Ben Zhang , Mac Chiang , Guennadi Liakhovetski , Kuninori Morimoto , Brent Lu , linux-kernel@vger.kernel.org Subject: [PATCH v2 3/3] ASoC: broadwell: add channel constraint Date: Tue, 28 Apr 2020 01:13:34 +0800 Message-Id: <1588007614-25061-4-git-send-email-brent.lu@intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1588007614-25061-1-git-send-email-brent.lu@intel.com> References: <1588007614-25061-1-git-send-email-brent.lu@intel.com> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org BDW boards using this machine driver supports only stereo capture and playback. Implement a constraint to enforce it. Signed-off-by: Brent Lu --- sound/soc/intel/boards/broadwell.c | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) diff --git a/sound/soc/intel/boards/broadwell.c b/sound/soc/intel/boards/broadwell.c index f9a8336..07b2cfd 100644 --- a/sound/soc/intel/boards/broadwell.c +++ b/sound/soc/intel/boards/broadwell.c @@ -143,6 +143,31 @@ static int broadwell_rtd_init(struct snd_soc_pcm_runtime *rtd) } #endif +static const unsigned int channels[] = { + 2, +}; + +static const struct snd_pcm_hw_constraint_list constraints_channels = { + .count = ARRAY_SIZE(channels), + .list = channels, + .mask = 0, +}; + +static int broadwell_fe_startup(struct snd_pcm_substream *substream) +{ + struct snd_pcm_runtime *runtime = substream->runtime; + + /* Board supports stereo configuration only */ + runtime->hw.channels_max = 2; + return snd_pcm_hw_constraint_list(runtime, 0, + SNDRV_PCM_HW_PARAM_CHANNELS, + &constraints_channels); +} + +static const struct snd_soc_ops broadwell_fe_ops = { + .startup = broadwell_fe_startup, +}; + SND_SOC_DAILINK_DEF(system, DAILINK_COMP_ARRAY(COMP_CPU("System Pin"))); @@ -180,6 +205,7 @@ static struct snd_soc_dai_link broadwell_rt286_dais[] = { .init = broadwell_rtd_init, #endif .trigger = {SND_SOC_DPCM_TRIGGER_POST, SND_SOC_DPCM_TRIGGER_POST}, + .ops = &broadwell_fe_ops, .dpcm_playback = 1, .dpcm_capture = 1, SND_SOC_DAILINK_REG(system, dummy, platform), -- 2.7.4