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 57F6FC54FD0 for ; Mon, 27 Apr 2020 08:43:31 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 33CBE2098B for ; Mon, 27 Apr 2020 08:43:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726869AbgD0Ina (ORCPT ); Mon, 27 Apr 2020 04:43:30 -0400 Received: from mga12.intel.com ([192.55.52.136]:49908 "EHLO mga12.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726003AbgD0In3 (ORCPT ); Mon, 27 Apr 2020 04:43:29 -0400 IronPort-SDR: W3GgC9Vpu28NMePxsVhYrOBWuffcLy7cOXqMRVlvouIIU1Q/nAV6IgOxwLYK1xHccRSj6Eki4x pj2Oc1OC+JGA== X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga005.jf.intel.com ([10.7.209.41]) by fmsmga106.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 27 Apr 2020 01:43:29 -0700 IronPort-SDR: W70FpfbFGXv4Y15djW/k2nA39A02axB8Ze4UMVrqXxjarL2+9R+SQnaYfuJDlmdIsDLkTx6wbH 3IID+bCEHg/w== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.73,323,1583222400"; d="scan'208";a="431673902" Received: from brentlu-desk0.itwn.intel.com ([10.5.253.11]) by orsmga005.jf.intel.com with ESMTP; 27 Apr 2020 01:43:26 -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 1/3] ASoC: bdw-rt5677: channel constraint support Date: Mon, 27 Apr 2020 16:37:16 +0800 Message-Id: <1587976638-29806-2-git-send-email-brent.lu@intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1587976638-29806-1-git-send-email-brent.lu@intel.com> References: <1587976638-29806-1-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/bdw-rt5677.c | 33 +++++++++++++++++++++++++++++++++ 1 file changed, 33 insertions(+) diff --git a/sound/soc/intel/boards/bdw-rt5677.c b/sound/soc/intel/boards/bdw-rt5677.c index cc41a34..7963cae 100644 --- a/sound/soc/intel/boards/bdw-rt5677.c +++ b/sound/soc/intel/boards/bdw-rt5677.c @@ -22,6 +22,8 @@ #include "../../codecs/rt5677.h" +#define DUAL_CHANNEL 2 + struct bdw_rt5677_priv { struct gpio_desc *gpio_hp_en; struct snd_soc_component *component; @@ -222,6 +224,36 @@ static int bdw_rt5677_rtd_init(struct snd_soc_pcm_runtime *rtd) } #endif +static const unsigned int channels[] = { + DUAL_CHANNEL, +}; + +static const struct snd_pcm_hw_constraint_list constraints_channels = { + .count = ARRAY_SIZE(channels), + .list = channels, + .mask = 0, +}; + +static int bdw_fe_startup(struct snd_pcm_substream *substream) +{ + struct snd_pcm_runtime *runtime = substream->runtime; + + /* + * On this platform for PCM device we support, + * stereo audio + */ + + runtime->hw.channels_max = DUAL_CHANNEL; + snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS, + &constraints_channels); + + return 0; +} + +static const struct snd_soc_ops bdw_rt5677_fe_ops = { + .startup = bdw_fe_startup, +}; + static int bdw_rt5677_init(struct snd_soc_pcm_runtime *rtd) { struct bdw_rt5677_priv *bdw_rt5677 = @@ -321,6 +353,7 @@ static struct snd_soc_dai_link bdw_rt5677_dais[] = { }, .dpcm_capture = 1, .dpcm_playback = 1, + .ops = &bdw_rt5677_fe_ops, SND_SOC_DAILINK_REG(fe, dummy, platform), }, -- 2.7.4