From: Daniel Mack Date: Thu, 4 Oct 2012 13:08:42 +0000 (+0200) Subject: ASoC: McASP: set format parameters in dependence of the DAI format X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=5296cf2d5e245ca3373207ba3f0aedaa10f040b6;p=openwrt%2Fstaging%2Fblogic.git ASoC: McASP: set format parameters in dependence of the DAI format The FSDUR flag configures whether the frame clock uses a high phase of only one bit or a full word. This has to be set depending on the DAI format. For other modes than DSP_B, the FSXDLY/FSRDLY fields have to be set to 1. Signed-off-by: Daniel Mack Signed-off-by: Mark Brown --- diff --git a/sound/soc/davinci/davinci-mcasp.c b/sound/soc/davinci/davinci-mcasp.c index 9f7c2e153ecd..11728cd7c2a2 100644 --- a/sound/soc/davinci/davinci-mcasp.c +++ b/sound/soc/davinci/davinci-mcasp.c @@ -477,6 +477,23 @@ static int davinci_mcasp_set_dai_fmt(struct snd_soc_dai *cpu_dai, struct davinci_audio_dev *dev = snd_soc_dai_get_drvdata(cpu_dai); void __iomem *base = dev->base; + switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { + case SND_SOC_DAIFMT_DSP_B: + case SND_SOC_DAIFMT_AC97: + mcasp_clr_bits(dev->base + DAVINCI_MCASP_TXFMCTL_REG, FSXDUR); + mcasp_clr_bits(dev->base + DAVINCI_MCASP_RXFMCTL_REG, FSRDUR); + break; + default: + /* configure a full-word SYNC pulse (LRCLK) */ + mcasp_set_bits(dev->base + DAVINCI_MCASP_TXFMCTL_REG, FSXDUR); + mcasp_set_bits(dev->base + DAVINCI_MCASP_RXFMCTL_REG, FSRDUR); + + /* make 1st data bit occur one ACLK cycle after the frame sync */ + mcasp_set_bits(dev->base + DAVINCI_MCASP_TXFMT_REG, FSXDLY(1)); + mcasp_set_bits(dev->base + DAVINCI_MCASP_RXFMT_REG, FSRDLY(1)); + break; + } + switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { case SND_SOC_DAIFMT_CBS_CFS: /* codec is clock and frame slave */ @@ -765,8 +782,6 @@ static void davinci_hw_param(struct davinci_audio_dev *dev, int stream) else printk(KERN_ERR "playback tdm slot %d not supported\n", dev->tdm_slots); - - mcasp_clr_bits(dev->base + DAVINCI_MCASP_TXFMCTL_REG, FSXDUR); } else { /* bit stream is MSB first with no delay */ /* DSP_B mode */ @@ -779,8 +794,6 @@ static void davinci_hw_param(struct davinci_audio_dev *dev, int stream) else printk(KERN_ERR "capture tdm slot %d not supported\n", dev->tdm_slots); - - mcasp_clr_bits(dev->base + DAVINCI_MCASP_RXFMCTL_REG, FSRDUR); } }