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Date: Mon, 18 Nov 2013 16:56:33 +0100 From: Florian Meier <florian.meier@...lo.de> To: "Shevchenko, Andriy" <andriy.shevchenko@...el.com> CC: Liam Girdwood <lgirdwood@...il.com>, Mark Brown <broonie@...nel.org>, Stephen Warren <swarren@...dotorg.org>, Lars-Peter Clausen <lars@...afoo.de>, "alsa-devel@...a-project.org" <alsa-devel@...a-project.org>, linux-rpi-kernel <linux-rpi-kernel@...ts.infradead.org>, devicetree <devicetree@...r.kernel.org>, dmaengine <dmaengine@...r.kernel.org>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, "linux-arm-kernel@...ts.infradead.org" <linux-arm-kernel@...ts.infradead.org> Subject: Re: [PATCHv3] ASoC: Add support for BCM2835 >> +static int bcm2835_i2s_hw_params(struct snd_pcm_substream *substream, >> + struct snd_pcm_hw_params *params, >> + struct snd_soc_dai *dai) >> +{ >> + struct bcm2835_i2s_dev *dev = snd_soc_dai_get_drvdata(dai); >> + >> + unsigned int sampling_rate = params_rate(params); >> + unsigned int data_length, data_delay, bclk_ratio; >> + unsigned int ch1pos, ch2pos, mode, format; >> + unsigned int mash = BCM2835_CLK_MASH_1; >> + unsigned int divi, divf, target_frequency; >> + int clk_src = -1; >> + unsigned int master = dev->fmt & SND_SOC_DAIFMT_MASTER_MASK; >> + uint32_t bit_master = (master == SND_SOC_DAIFMT_CBS_CFS >> + || master == SND_SOC_DAIFMT_CBS_CFM); >> + >> + uint32_t frame_master = (master == SND_SOC_DAIFMT_CBS_CFS > > So, if master == SND_SOC_DAIFMT_CBS_CFS both bit_master and frame_master > will be true. Is it correct? Yes. That is exactly what CBS_CFS expresses: Codec Bit Slave and Codec Frame Slave So the interface is bit master as well as frame master. Did I miss anything? -- 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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