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authorMark Brown <broonie@opensource.wolfsonmicro.com>2009-03-13 17:27:08 +0300
committerMark Brown <broonie@opensource.wolfsonmicro.com>2009-03-14 14:38:16 +0300
commit85fab7802a4bc00cc752f430e22a0d9fc41fe199 (patch)
tree60c583e62271c758eb34436f1b57e608d0479273 /sound/soc/pxa/zylonite.c
parent0ce36c5f7f87632f26c8fbefe68b5116eda152d2 (diff)
downloadlinux-85fab7802a4bc00cc752f430e22a0d9fc41fe199.tar.xz
ASoC: Fix Zylonite for non-networked SSP mode
This also simplifies the code a bit. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'sound/soc/pxa/zylonite.c')
-rw-r--r--sound/soc/pxa/zylonite.c55
1 files changed, 25 insertions, 30 deletions
diff --git a/sound/soc/pxa/zylonite.c b/sound/soc/pxa/zylonite.c
index 9f6116edbb84..9a386b4c4ed1 100644
--- a/sound/soc/pxa/zylonite.c
+++ b/sound/soc/pxa/zylonite.c
@@ -96,42 +96,35 @@ static int zylonite_voice_hw_params(struct snd_pcm_substream *substream,
struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
unsigned int pll_out = 0;
- unsigned int acds = 0;
unsigned int wm9713_div = 0;
int ret = 0;
-
- switch (params_rate(params)) {
+ int rate = params_rate(params);
+ int width = snd_pcm_format_physical_width(params_format(params));
+
+ /* Only support ratios that we can generate neatly from the AC97
+ * based master clock - in particular, this excludes 44.1kHz.
+ * In most applications the voice DAC will be used for telephony
+ * data so multiples of 8kHz will be the common case.
+ */
+ switch (rate) {
case 8000:
wm9713_div = 12;
- pll_out = 2048000;
break;
case 16000:
wm9713_div = 6;
- pll_out = 4096000;
break;
case 48000:
- default:
wm9713_div = 2;
- pll_out = 12288000;
- acds = 1;
break;
+ default:
+ /* Don't support OSS emulation */
+ return -EINVAL;
}
- ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S |
- SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
- if (ret < 0)
- return ret;
-
- ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S |
- SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
- if (ret < 0)
- return ret;
+ /* Add 1 to the width for the leading clock cycle */
+ pll_out = rate * (width + 1) * 8;
- /* Use network mode for stereo, one slot per channel. */
- if (params_channels(params) > 1)
- ret = snd_soc_dai_set_tdm_slot(cpu_dai, 0x3, 2);
- else
- ret = snd_soc_dai_set_tdm_slot(cpu_dai, 1, 1);
+ ret = snd_soc_dai_set_sysclk(cpu_dai, PXA_SSP_CLK_AUDIO, 0, 1);
if (ret < 0)
return ret;
@@ -139,14 +132,6 @@ static int zylonite_voice_hw_params(struct snd_pcm_substream *substream,
if (ret < 0)
return ret;
- ret = snd_soc_dai_set_clkdiv(cpu_dai, PXA_SSP_AUDIO_DIV_ACDS, acds);
- if (ret < 0)
- return ret;
-
- ret = snd_soc_dai_set_sysclk(cpu_dai, PXA_SSP_CLK_AUDIO, 0, 1);
- if (ret < 0)
- return ret;
-
if (clk_pout)
ret = snd_soc_dai_set_clkdiv(codec_dai, WM9713_PCMCLK_PLL_DIV,
WM9713_PCMDIV(wm9713_div));
@@ -156,6 +141,16 @@ static int zylonite_voice_hw_params(struct snd_pcm_substream *substream,
if (ret < 0)
return ret;
+ ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S |
+ SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
+ if (ret < 0)
+ return ret;
+
+ ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S |
+ SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
+ if (ret < 0)
+ return ret;
+
return 0;
}