2 #include <linux/module.h>
5 #include <asm/mach-types.h>
7 #include "../codecs/wm8940.h"
8 #include "pxa2xx-i2s.h"
10 static int imote2_asoc_hw_params(struct snd_pcm_substream *substream,
11 struct snd_pcm_hw_params *params)
13 struct snd_soc_pcm_runtime *rtd = substream->private_data;
14 struct snd_soc_dai *codec_dai = rtd->codec_dai;
15 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
19 switch (params_rate(params)) {
33 /* set codec DAI configuration */
34 ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S
35 | SND_SOC_DAIFMT_NB_NF
36 | SND_SOC_DAIFMT_CBS_CFS);
40 /* CPU should be clock master */
41 ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S
42 | SND_SOC_DAIFMT_NB_NF
43 | SND_SOC_DAIFMT_CBS_CFS);
47 ret = snd_soc_dai_set_sysclk(codec_dai, 0, clk,
52 /* set the I2S system clock as input (unused) */
53 ret = snd_soc_dai_set_sysclk(cpu_dai, PXA2XX_I2S_SYSCLK, clk,
59 static struct snd_soc_ops imote2_asoc_ops = {
60 .hw_params = imote2_asoc_hw_params,
63 static struct snd_soc_dai_link imote2_dai = {
65 .stream_name = "WM8940",
66 .cpu_dai_name = "pxa2xx-i2s",
67 .codec_dai_name = "wm8940-hifi",
68 .platform_name = "pxa-pcm-audio",
69 .codec_name = "wm8940-codec.0-0034",
70 .ops = &imote2_asoc_ops,
73 static struct snd_soc_card imote2 = {
75 .dai_link = &imote2_dai,
79 static int __devinit imote2_probe(struct platform_device *pdev)
81 struct snd_soc_card *card = &imote2;
84 card->dev = &pdev->dev;
86 ret = snd_soc_register_card(card);
88 dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
93 static int __devexit imote2_remove(struct platform_device *pdev)
95 struct snd_soc_card *card = platform_get_drvdata(pdev);
97 snd_soc_unregister_card(card);
101 static struct platform_driver imote2_driver = {
103 .name = "imote2-audio",
104 .owner = THIS_MODULE,
106 .probe = imote2_probe,
107 .remove = __devexit_p(imote2_remove),
110 module_platform_driver(imote2_driver);
112 MODULE_AUTHOR("Jonathan Cameron");
113 MODULE_DESCRIPTION("ALSA SoC Imote 2");
114 MODULE_LICENSE("GPL");
115 MODULE_ALIAS("platform:imote2-audio");