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 snd_soc_imote2 = {
75 .dai_link = &imote2_dai,
79 static struct platform_device *imote2_snd_device;
81 static int __init imote2_asoc_init(void)
85 if (!machine_is_intelmote2())
87 imote2_snd_device = platform_device_alloc("soc-audio", -1);
88 if (!imote2_snd_device)
91 platform_set_drvdata(imote2_snd_device, &snd_soc_imote2);
92 ret = platform_device_add(imote2_snd_device);
94 platform_device_put(imote2_snd_device);
98 module_init(imote2_asoc_init);
100 static void __exit imote2_asoc_exit(void)
102 platform_device_unregister(imote2_snd_device);
104 module_exit(imote2_asoc_exit);
106 MODULE_AUTHOR("Jonathan Cameron");
107 MODULE_DESCRIPTION("ALSA SoC Imote 2");
108 MODULE_LICENSE("GPL");