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authorAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-08-05 17:04:01 -0300
committerAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-08-05 17:04:01 -0300
commit57f0f512b273f60d52568b8c6b77e17f5636edc0 (patch)
tree5e910f0e82173f4ef4f51111366a3f1299037a7b /sound/soc/pxa/imote2.c
Initial import
Diffstat (limited to 'sound/soc/pxa/imote2.c')
-rw-r--r--sound/soc/pxa/imote2.c104
1 files changed, 104 insertions, 0 deletions
diff --git a/sound/soc/pxa/imote2.c b/sound/soc/pxa/imote2.c
new file mode 100644
index 000000000..29fabbfd2
--- /dev/null
+++ b/sound/soc/pxa/imote2.c
@@ -0,0 +1,104 @@
+
+#include <linux/module.h>
+#include <sound/soc.h>
+
+#include <asm/mach-types.h>
+
+#include "../codecs/wm8940.h"
+#include "pxa2xx-i2s.h"
+
+static int imote2_asoc_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params)
+{
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct snd_soc_dai *codec_dai = rtd->codec_dai;
+ struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
+ unsigned int clk = 0;
+ int ret;
+
+ switch (params_rate(params)) {
+ case 8000:
+ case 16000:
+ case 48000:
+ case 96000:
+ clk = 12288000;
+ break;
+ case 11025:
+ case 22050:
+ case 44100:
+ clk = 11289600;
+ break;
+ }
+
+ ret = snd_soc_dai_set_sysclk(codec_dai, 0, clk,
+ SND_SOC_CLOCK_IN);
+ if (ret < 0)
+ return ret;
+
+ /* set the I2S system clock as input (unused) */
+ ret = snd_soc_dai_set_sysclk(cpu_dai, PXA2XX_I2S_SYSCLK, clk,
+ SND_SOC_CLOCK_OUT);
+
+ return ret;
+}
+
+static struct snd_soc_ops imote2_asoc_ops = {
+ .hw_params = imote2_asoc_hw_params,
+};
+
+static struct snd_soc_dai_link imote2_dai = {
+ .name = "WM8940",
+ .stream_name = "WM8940",
+ .cpu_dai_name = "pxa2xx-i2s",
+ .codec_dai_name = "wm8940-hifi",
+ .platform_name = "pxa-pcm-audio",
+ .codec_name = "wm8940-codec.0-0034",
+ .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
+ SND_SOC_DAIFMT_CBS_CFS,
+ .ops = &imote2_asoc_ops,
+};
+
+static struct snd_soc_card imote2 = {
+ .name = "Imote2",
+ .owner = THIS_MODULE,
+ .dai_link = &imote2_dai,
+ .num_links = 1,
+};
+
+static int imote2_probe(struct platform_device *pdev)
+{
+ struct snd_soc_card *card = &imote2;
+ int ret;
+
+ card->dev = &pdev->dev;
+
+ ret = snd_soc_register_card(card);
+ if (ret)
+ dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
+ ret);
+ return ret;
+}
+
+static int imote2_remove(struct platform_device *pdev)
+{
+ struct snd_soc_card *card = platform_get_drvdata(pdev);
+
+ snd_soc_unregister_card(card);
+ return 0;
+}
+
+static struct platform_driver imote2_driver = {
+ .driver = {
+ .name = "imote2-audio",
+ .pm = &snd_soc_pm_ops,
+ },
+ .probe = imote2_probe,
+ .remove = imote2_remove,
+};
+
+module_platform_driver(imote2_driver);
+
+MODULE_AUTHOR("Jonathan Cameron");
+MODULE_DESCRIPTION("ALSA SoC Imote 2");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:imote2-audio");