From mboxrd@z Thu Jan 1 00:00:00 1970 From: Yong Zhi Subject: [PATCH 2/2] ASoC: Intel: Skylake: Use refcap device for mono recording Date: Tue, 17 May 2016 09:43:05 -0700 Message-ID: <1463503385-4535-2-git-send-email-yong.zhi@intel.com> References: <1463503385-4535-1-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 mga02.intel.com (mga02.intel.com [134.134.136.20]) by alsa0.perex.cz (Postfix) with ESMTP id F1FF92654F1 for ; Tue, 17 May 2016 18:40:25 +0200 (CEST) In-Reply-To: <1463503385-4535-1-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 Cc: alsa-devel@alsa-project.org, benzh@chromium.org, vinod.koul@intel.com, marc.herbert@intel.com, yang.a.fang@intel.com, sathya.prakash.m.r@intel.com, jeeja.kp@intel.com, vedang.patel@intel.com, Yong Zhi List-Id: alsa-devel@alsa-project.org Only mono channel is allowed for refcap device. Signed-off-by: Yong Zhi --- sound/soc/intel/boards/skl_nau88l25_ssm4567.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/sound/soc/intel/boards/skl_nau88l25_ssm4567.c b/sound/soc/intel/boards/skl_nau88l25_ssm4567.c index 73cbddb..65002bd 100644 --- a/sound/soc/intel/boards/skl_nau88l25_ssm4567.c +++ b/sound/soc/intel/boards/skl_nau88l25_ssm4567.c @@ -388,8 +388,22 @@ static 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 skylake_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); -- 1.9.1