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 EF87BC54FD0 for ; Mon, 27 Apr 2020 08:43:35 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D026A2098B for ; Mon, 27 Apr 2020 08:43:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726886AbgD0Inf (ORCPT ); Mon, 27 Apr 2020 04:43:35 -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 S1726003AbgD0Ind (ORCPT ); Mon, 27 Apr 2020 04:43:33 -0400 IronPort-SDR: +/XzmZvREoMWlRYuNBva9zxBHXYOh3kENONhOFArC6xycNnd9n3p2OgTBku/sBWgkCqxsmTfUw JyexbzKZ59Wg== 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 01:43:33 -0700 IronPort-SDR: UZM899RdUKJariK3v5QIGo+8aqvUNaMDqIScnewsNP4fHIMFgtHeYBnkFubGWgwuKFfMML4UPf yeQ/7nH49/SQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.73,323,1583222400"; d="scan'208";a="431673940" Received: from brentlu-desk0.itwn.intel.com ([10.5.253.11]) by orsmga005.jf.intel.com with ESMTP; 27 Apr 2020 01:43:30 -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 2/3] ASoC: bdw-rt5650: channel constraint support Date: Mon, 27 Apr 2020 16:37:17 +0800 Message-Id: <1587976638-29806-3-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 2 or 4-channel capture. Implement a constraint to enforce it. Signed-off-by: Brent Lu --- sound/soc/intel/boards/bdw-rt5650.c | 34 ++++++++++++++++++++++++++++++++++ 1 file changed, 34 insertions(+) diff --git a/sound/soc/intel/boards/bdw-rt5650.c b/sound/soc/intel/boards/bdw-rt5650.c index af2f502..dd4f219 100644 --- a/sound/soc/intel/boards/bdw-rt5650.c +++ b/sound/soc/intel/boards/bdw-rt5650.c @@ -21,6 +21,9 @@ #include "../../codecs/rt5645.h" +#define DUAL_CHANNEL 2 +#define QUAD_CHANNEL 4 + struct bdw_rt5650_priv { struct gpio_desc *gpio_hp_en; struct snd_soc_component *component; @@ -162,6 +165,36 @@ static int bdw_rt5650_rtd_init(struct snd_soc_pcm_runtime *rtd) } #endif +static const unsigned int channels[] = { + DUAL_CHANNEL, QUAD_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, + * 2 or 4 channel capture + */ + if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) + snd_pcm_hw_constraint_list(runtime, 0, + SNDRV_PCM_HW_PARAM_CHANNELS, + &constraints_channels); + + return 0; +} + +static const struct snd_soc_ops bdw_rt5650_fe_ops = { + .startup = bdw_fe_startup, +}; + static int bdw_rt5650_init(struct snd_soc_pcm_runtime *rtd) { struct bdw_rt5650_priv *bdw_rt5650 = @@ -234,6 +267,7 @@ static struct snd_soc_dai_link bdw_rt5650_dais[] = { .name = "System PCM", .stream_name = "System Playback", .dynamic = 1, + .ops = &bdw_rt5650_fe_ops, #if !IS_ENABLED(CONFIG_SND_SOC_SOF_BROADWELL) .init = bdw_rt5650_rtd_init, #endif -- 2.7.4