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| author | Xiubo Li <Li.Xiubo@freescale.com> | 2013-12-25 04:40:04 (GMT) |
|---|---|---|
| committer | Matthew Weigel <Matthew.Weigel@freescale.com> | 2014-12-11 18:36:25 (GMT) |
| commit | f6d460ab12bad902e28a88df4e663a5e423ef3c0 (patch) | |
| tree | 5c7a9f8dbe64887fc61436d8a4b79abfdc7c07f6 /sound | |
| parent | c7985f927b17047a3003493f5eb2883006e5eb2b (diff) | |
| download | linux-fsl-qoriq-f6d460ab12bad902e28a88df4e663a5e423ef3c0.tar.xz | |
ASoC: fsl_sai: Add disable operation for the corresponding data channel.
Enables/Disables the corresponding data channel for tx/rx operation.
A channel must be enabled before its FIFO is accessed, and then disable
it when tx/rx is stopped or idle.
Signed-off-by: Xiubo Li <Li.Xiubo@freescale.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
---
This patch is pulled back from upstream:
commit e5d0fa9c3ec59a40e0285d96b65b7f62875acd42
Change-Id: I44a321c2f74580bc6387688777434c88f027c17b
Reviewed-on: http://git.am.freescale.net:8181/19747
Tested-by: Review Code-CDREVIEW <CDREVIEW@freescale.com>
Reviewed-by: Zhengxiong Jin <Jason.Jin@freescale.com>
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/soc/fsl/fsl_sai.c | 21 |
1 files changed, 13 insertions, 8 deletions
diff --git a/sound/soc/fsl/fsl_sai.c b/sound/soc/fsl/fsl_sai.c index a414f72..ba4d9c8 100644 --- a/sound/soc/fsl/fsl_sai.c +++ b/sound/soc/fsl/fsl_sai.c @@ -124,20 +124,17 @@ static int fsl_sai_set_dai_fmt_tr(struct snd_soc_dai *cpu_dai, unsigned int fmt, int fsl_dir) { struct fsl_sai *sai = snd_soc_dai_get_drvdata(cpu_dai); - u32 val_cr2, val_cr3, val_cr4, reg_cr2, reg_cr3, reg_cr4; + u32 val_cr2, val_cr4, reg_cr2, reg_cr4; if (fsl_dir == FSL_FMT_TRANSMITTER) { reg_cr2 = FSL_SAI_TCR2; - reg_cr3 = FSL_SAI_TCR3; reg_cr4 = FSL_SAI_TCR4; } else { reg_cr2 = FSL_SAI_RCR2; - reg_cr3 = FSL_SAI_RCR3; reg_cr4 = FSL_SAI_RCR4; } val_cr2 = sai_readl(sai, sai->base + reg_cr2); - val_cr3 = sai_readl(sai, sai->base + reg_cr3); val_cr4 = sai_readl(sai, sai->base + reg_cr4); if (sai->big_endian_data) @@ -188,13 +185,10 @@ static int fsl_sai_set_dai_fmt_tr(struct snd_soc_dai *cpu_dai, return -EINVAL; } - val_cr3 |= FSL_SAI_CR3_TRCE; - if (fsl_dir == FSL_FMT_RECEIVER) val_cr2 |= FSL_SAI_CR2_SYNC; sai_writel(sai, val_cr2, sai->base + reg_cr2); - sai_writel(sai, val_cr3, sai->base + reg_cr3); sai_writel(sai, val_cr4, sai->base + reg_cr4); return 0; @@ -278,7 +272,7 @@ static int fsl_sai_trigger(struct snd_pcm_substream *substream, int cmd, struct snd_soc_dai *cpu_dai) { struct fsl_sai *sai = snd_soc_dai_get_drvdata(cpu_dai); - unsigned int tcsr, rcsr; + u32 tcsr, rcsr, val_cr3, reg_cr3; tcsr = sai_readl(sai, sai->base + FSL_SAI_TCSR); rcsr = sai_readl(sai, sai->base + FSL_SAI_RCSR); @@ -286,17 +280,24 @@ static int fsl_sai_trigger(struct snd_pcm_substream *substream, int cmd, if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { tcsr |= FSL_SAI_CSR_FRDE; rcsr &= ~FSL_SAI_CSR_FRDE; + reg_cr3 = FSL_SAI_TCR3; } else { rcsr |= FSL_SAI_CSR_FRDE; tcsr &= ~FSL_SAI_CSR_FRDE; + reg_cr3 = FSL_SAI_RCR3; } + val_cr3 = sai_readl(sai, sai->base + reg_cr3); + switch (cmd) { case SNDRV_PCM_TRIGGER_START: case SNDRV_PCM_TRIGGER_RESUME: case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: tcsr |= FSL_SAI_CSR_TERE; rcsr |= FSL_SAI_CSR_TERE; + val_cr3 |= FSL_SAI_CR3_TRCE; + + sai_writel(sai, val_cr3, sai->base + reg_cr3); sai_writel(sai, rcsr, sai->base + FSL_SAI_RCSR); sai_writel(sai, tcsr, sai->base + FSL_SAI_TCSR); break; @@ -308,8 +309,12 @@ static int fsl_sai_trigger(struct snd_pcm_substream *substream, int cmd, tcsr &= ~FSL_SAI_CSR_TERE; rcsr &= ~FSL_SAI_CSR_TERE; } + + val_cr3 &= ~FSL_SAI_CR3_TRCE; + sai_writel(sai, tcsr, sai->base + FSL_SAI_TCSR); sai_writel(sai, rcsr, sai->base + FSL_SAI_RCSR); + sai_writel(sai, val_cr3, sai->base + reg_cr3); break; default: return -EINVAL; |