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Date: Mon, 2 Nov 2015 11:14:01 +0800 From: Caesar Wang <wxt@...k-chips.com> To: Heiko Stuebner <heiko@...ech.de>, Mark Brown <broonie@...nel.org> Cc: linux-rockchip@...ts.infradead.org, Caesar Wang <wxt@...k-chips.com>, Jaroslav Kysela <perex@...ex.cz>, alsa-devel@...a-project.org, linux-kernel@...r.kernel.org, Takashi Iwai <tiwai@...e.com>, Liam Girdwood <lgirdwood@...il.com>, linux-arm-kernel@...ts.infradead.org Subject: [PATCH 2/3] ASoC: rockchip-max98090: add the divider the clock for cpu Add to set the cpu/codec DAI configure, let's divider the Transmit/Receive clock for cpu. In master mode, The SCLK and LRCK are configured as output, this patch should can set each divider to arrange the clock distribution. Signed-off-by: Caesar Wang <wxt@...k-chips.com> --- sound/soc/rockchip/rockchip_max98090.c | 32 ++++++++++++++++++++++++++++++++ 1 file changed, 32 insertions(+) diff --git a/sound/soc/rockchip/rockchip_max98090.c b/sound/soc/rockchip/rockchip_max98090.c index 26567b1..8547155 100644 --- a/sound/soc/rockchip/rockchip_max98090.c +++ b/sound/soc/rockchip/rockchip_max98090.c @@ -75,8 +75,25 @@ static int rk_aif1_hw_params(struct snd_pcm_substream *substream, struct snd_soc_pcm_runtime *rtd = substream->private_data; struct snd_soc_dai *cpu_dai = rtd->cpu_dai; struct snd_soc_dai *codec_dai = rtd->codec_dai; + int dai_fmt = rtd->card->dai_link->dai_fmt; int mclk; + /* set codec DAI configuration */ + ret = snd_soc_dai_set_fmt(codec_dai, dai_fmt); + if (ret < 0) { + dev_err(codec_dai->dev, + "failed to set the format for codec side\n"); + return ret; + } + + /* set cpu DAI configuration */ + ret = snd_soc_dai_set_fmt(cpu_dai, dai_fmt); + if (ret < 0) { + dev_err(codec_dai->dev, + "failed to set the format for cpu side\n"); + return ret; + } + switch (params_rate(params)) { case 8000: case 16000: @@ -105,6 +122,21 @@ static int rk_aif1_hw_params(struct snd_pcm_substream *substream, return ret; } + /* The codec is master mode, that's not needed set clkdiv for cpu */ + if ((dai_fmt & SND_SOC_DAIFMT_MASTER_MASK) == SND_SOC_DAIFMT_CBM_CFM) + return ret; + + /* the LRCK clock for cpu */ + ret = snd_soc_dai_set_clkdiv(cpu_dai, ROCKCHIP_DIV_BCLK, + (mclk / 4) / params_rate(params)); + if (ret < 0) + return ret; + + /* the SCLK clock for cpu */ + snd_soc_dai_set_clkdiv(cpu_dai, ROCKCHIP_DIV_MCLK, 4); + if (ret < 0) + return ret; + return ret; } -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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