From: Mark Brown <broonie@opensource.wolfsonmicro.com>
To: Liam Girdwood <lrg@ti.com>
Cc: alsa-devel@alsa-project.org, patches@opensource.wolfsonmicro.com,
Mark Brown <broonie@opensource.wolfsonmicro.com>
Subject: [PATCH 2/2] ASoC: wm1250-ev1: Support sample rate configuration
Date: Fri, 13 Apr 2012 20:24:25 +0100 [thread overview]
Message-ID: <1334345065-4148-2-git-send-email-broonie@opensource.wolfsonmicro.com> (raw)
In-Reply-To: <1334345065-4148-1-git-send-email-broonie@opensource.wolfsonmicro.com>
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>
---
sound/soc/codecs/wm1250-ev1.c | 43 +++++++++++++++++++++++++++++++++++++++++
1 files changed, 43 insertions(+), 0 deletions(-)
diff --git a/sound/soc/codecs/wm1250-ev1.c b/sound/soc/codecs/wm1250-ev1.c
index 0766b5f..e0b51e9 100644
--- a/sound/soc/codecs/wm1250-ev1.c
+++ b/sound/soc/codecs/wm1250-ev1.c
@@ -79,6 +79,48 @@ static const struct snd_soc_dapm_route wm1250_ev1_dapm_routes[] = {
{ "WM1250 Output", NULL, "DAC" },
};
+static int wm1250_ev1_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params,
+ struct snd_soc_dai *dai)
+{
+ struct wm1250_priv *wm1250 = snd_soc_codec_get_drvdata(dai->codec);
+
+ switch (params_rate(params)) {
+ case 8000:
+ gpio_set_value(wm1250->gpios[WM1250_EV1_GPIO_CLK_SEL0].gpio,
+ 1);
+ gpio_set_value(wm1250->gpios[WM1250_EV1_GPIO_CLK_SEL1].gpio,
+ 1);
+ break;
+ case 16000:
+ gpio_set_value(wm1250->gpios[WM1250_EV1_GPIO_CLK_SEL0].gpio,
+ 0);
+ gpio_set_value(wm1250->gpios[WM1250_EV1_GPIO_CLK_SEL1].gpio,
+ 1);
+ break;
+ case 32000:
+ gpio_set_value(wm1250->gpios[WM1250_EV1_GPIO_CLK_SEL0].gpio,
+ 1);
+ gpio_set_value(wm1250->gpios[WM1250_EV1_GPIO_CLK_SEL1].gpio,
+ 0);
+ break;
+ case 64000:
+ gpio_set_value(wm1250->gpios[WM1250_EV1_GPIO_CLK_SEL0].gpio,
+ 0);
+ gpio_set_value(wm1250->gpios[WM1250_EV1_GPIO_CLK_SEL1].gpio,
+ 0);
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static const struct snd_soc_dai_ops wm1250_ev1_ops = {
+ .hw_params = wm1250_ev1_hw_params,
+};
+
static struct snd_soc_dai_driver wm1250_ev1_dai = {
.name = "wm1250-ev1",
.playback = {
@@ -95,6 +137,7 @@ static struct snd_soc_dai_driver wm1250_ev1_dai = {
.rates = SNDRV_PCM_RATE_8000,
.formats = SNDRV_PCM_FMTBIT_S16_LE,
},
+ .ops = &wm1250_ev1_ops,
};
static struct snd_soc_codec_driver soc_codec_dev_wm1250_ev1 = {
--
1.7.9.1
prev parent reply other threads:[~2012-04-13 19:24 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-04-13 19:24 [PATCH 1/2] ASoC: wm1250-ev1: Support stereo Mark Brown
2012-04-13 19:24 ` Mark Brown [this message]
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