From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mark Brown Subject: [PATCH] ASoC: arizona: Ensure we clock two channels for I2S mode Date: Wed, 13 Mar 2013 19:06:13 +0000 Message-ID: <1363201573-3057-1-git-send-email-broonie@opensource.wolfsonmicro.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from opensource.wolfsonmicro.com (opensource.wolfsonmicro.com [80.75.67.52]) by alsa0.perex.cz (Postfix) with ESMTP id 3F0E726257E for ; Wed, 13 Mar 2013 20:06:16 +0100 (CET) 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: Liam Girdwood Cc: alsa-devel@alsa-project.org, patches@opensource.wolfsonmicro.com, Mark Brown List-Id: alsa-devel@alsa-project.org I2S requires stereo clocking even for mono data. Signed-off-by: Mark Brown --- sound/soc/codecs/arizona.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/sound/soc/codecs/arizona.c b/sound/soc/codecs/arizona.c index 0c70d503..2b0803e 100644 --- a/sound/soc/codecs/arizona.c +++ b/sound/soc/codecs/arizona.c @@ -818,7 +818,7 @@ static int arizona_hw_params(struct snd_pcm_substream *substream, struct arizona *arizona = priv->arizona; int base = dai->driver->base; const int *rates; - int i, ret; + int i, ret, val; int chan_limit = arizona->pdata.max_channels_clocked[dai->id - 1]; int bclk, lrclk, wl, frame, bclk_target; @@ -834,6 +834,13 @@ static int arizona_hw_params(struct snd_pcm_substream *substream, bclk_target *= chan_limit; } + /* Force stereo for I2S mode */ + val = snd_soc_read(codec, base + ARIZONA_AIF_FORMAT); + if (params_channels(params) == 1 && (val & ARIZONA_AIF1_FMT_MASK)) { + arizona_aif_dbg(dai, "Forcing stereo mode\n"); + bclk_target *= 2; + } + for (i = 0; i < ARRAY_SIZE(arizona_44k1_bclk_rates); i++) { if (rates[i] >= bclk_target && rates[i] % params_rate(params) == 0) { -- 1.7.10.4