From mboxrd@z Thu Jan 1 00:00:00 1970 From: Yong Zhi Subject: [PATCH v2] ASoC: Intel: bxt: Use refcap device for mono recording Date: Thu, 2 Aug 2018 18:21:31 -0500 Message-ID: <1533252091-31918-1-git-send-email-yong.zhi@intel.com> References: <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 mga14.intel.com (mga14.intel.com [192.55.52.115]) by alsa0.perex.cz (Postfix) with ESMTP id 32E452677D8 for ; Fri, 3 Aug 2018 01:21:45 +0200 (CEST) In-Reply-To: <1533143039-5428-1-git-send-email-yong.zhi@intel.com> 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: alsa-devel@alsa-project.org, harshapriya.n@intel.com, vkoul@kernel.org, naveen.m@intel.com, 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. Signed-off-by: Yong Zhi Reviewed-by: Pierre-Louis Bossart --- Changes since v1: - Remove renaming of "Refcap". - Add Reviewed-by tag. sound/soc/intel/boards/bxt_da7219_max98357a.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/sound/soc/intel/boards/bxt_da7219_max98357a.c b/sound/soc/intel/boards/bxt_da7219_max98357a.c index be6e4b40bf03..6f052fc8d1e2 100644 --- a/sound/soc/intel/boards/bxt_da7219_max98357a.c +++ b/sound/soc/intel/boards/bxt_da7219_max98357a.c @@ -324,8 +324,22 @@ static const struct snd_pcm_hw_constraint_list constraints_16000 = { .list = rates_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 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); -- 2.7.4