From mboxrd@z Thu Jan 1 00:00:00 1970 From: Yong Zhi Subject: [PATCH] ASoC: Intel: bxt: Use refcap device for mono recording Date: Wed, 1 Aug 2018 10:03:59 -0700 Message-ID: <1533143039-5428-1-git-send-email-yong.zhi@intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from mga05.intel.com (mga05.intel.com [192.55.52.43]) by alsa0.perex.cz (Postfix) with ESMTP id CA6D12677AA for ; Wed, 1 Aug 2018 19:05:53 +0200 (CEST) List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: alsa-devel-bounces@alsa-project.org Sender: alsa-devel-bounces@alsa-project.org To: broonie@kernel.org, pierre-louis.bossart@linux.intel.com Cc: harshapriya.n@intel.com, naveen.m@intel.com, alsa-devel@alsa-project.org, jenny.tc@intel.com, Yong Zhi List-Id: alsa-devel@alsa-project.org The refcap capture device supports mono recording only, this patch adds the channel constraints, also change stream_name to "Wake on Voice". Signed-off-by: Yong Zhi --- sound/soc/intel/boards/bxt_da7219_max98357a.c | 16 +++++++++++++++- 1 file changed, 15 insertions(+), 1 deletion(-) diff --git a/sound/soc/intel/boards/bxt_da7219_max98357a.c b/sound/soc/intel/boards/bxt_da7219_max98357a.c index be6e4b4..097a089 100644 --- a/sound/soc/intel/boards/bxt_da7219_max98357a.c +++ b/sound/soc/intel/boards/bxt_da7219_max98357a.c @@ -319,6 +319,15 @@ static const unsigned int rates_16000[] = { 16000, }; +static const unsigned int ch_mono[] = { + 1, +}; + +static const struct snd_pcm_hw_constraint_list constraints_refcap = { + .count = ARRAY_SIZE(ch_mono), + .list = ch_mono, +}; + static const struct snd_pcm_hw_constraint_list constraints_16000 = { .count = ARRAY_SIZE(rates_16000), .list = rates_16000, @@ -326,6 +335,11 @@ static const struct snd_pcm_hw_constraint_list constraints_16000 = { static int broxton_refcap_startup(struct snd_pcm_substream *substream) { + substream->runtime->hw.channels_max = 1; + snd_pcm_hw_constraint_list(substream->runtime, 0, + SNDRV_PCM_HW_PARAM_CHANNELS, + &constraints_refcap); + return snd_pcm_hw_constraint_list(substream->runtime, 0, SNDRV_PCM_HW_PARAM_RATE, &constraints_16000); @@ -372,7 +386,7 @@ static struct snd_soc_dai_link broxton_dais[] = { [BXT_DPCM_AUDIO_REF_CP] = { .name = "Bxt Audio Reference cap", - .stream_name = "Refcap", + .stream_name = "Wake on Voice", .cpu_dai_name = "Reference Pin", .codec_name = "snd-soc-dummy", .codec_dai_name = "snd-soc-dummy-dai", -- 2.7.4