ASoC: wm1250-ev1: Support sample rate configuration
The Springbank module can support a range of sample rates, selected at runtime via GPIO configuration. Allow these to be configured at runtime. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
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@ -79,6 +79,48 @@ static const struct snd_soc_dapm_route wm1250_ev1_dapm_routes[] = {
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{ "WM1250 Output", NULL, "DAC" },
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};
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static int wm1250_ev1_hw_params(struct snd_pcm_substream *substream,
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struct snd_pcm_hw_params *params,
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struct snd_soc_dai *dai)
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{
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struct wm1250_priv *wm1250 = snd_soc_codec_get_drvdata(dai->codec);
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switch (params_rate(params)) {
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case 8000:
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gpio_set_value(wm1250->gpios[WM1250_EV1_GPIO_CLK_SEL0].gpio,
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1);
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gpio_set_value(wm1250->gpios[WM1250_EV1_GPIO_CLK_SEL1].gpio,
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1);
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break;
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case 16000:
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gpio_set_value(wm1250->gpios[WM1250_EV1_GPIO_CLK_SEL0].gpio,
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0);
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gpio_set_value(wm1250->gpios[WM1250_EV1_GPIO_CLK_SEL1].gpio,
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1);
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break;
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case 32000:
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gpio_set_value(wm1250->gpios[WM1250_EV1_GPIO_CLK_SEL0].gpio,
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1);
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gpio_set_value(wm1250->gpios[WM1250_EV1_GPIO_CLK_SEL1].gpio,
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0);
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break;
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case 64000:
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gpio_set_value(wm1250->gpios[WM1250_EV1_GPIO_CLK_SEL0].gpio,
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0);
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gpio_set_value(wm1250->gpios[WM1250_EV1_GPIO_CLK_SEL1].gpio,
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0);
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break;
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default:
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return -EINVAL;
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}
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return 0;
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}
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static const struct snd_soc_dai_ops wm1250_ev1_ops = {
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.hw_params = wm1250_ev1_hw_params,
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};
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static struct snd_soc_dai_driver wm1250_ev1_dai = {
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.name = "wm1250-ev1",
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.playback = {
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@ -95,6 +137,7 @@ static struct snd_soc_dai_driver wm1250_ev1_dai = {
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.rates = SNDRV_PCM_RATE_8000,
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.formats = SNDRV_PCM_FMTBIT_S16_LE,
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},
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.ops = &wm1250_ev1_ops,
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};
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static struct snd_soc_codec_driver soc_codec_dev_wm1250_ev1 = {
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