2 #include <linux/module.h>
5 #include <asm/mach-types.h>
7 #include "../codecs/wm8940.h"
8 #include "pxa2xx-i2s.h"
9 #include "pxa2xx-pcm.h"
11 static int imote2_asoc_hw_params(struct snd_pcm_substream *substream,
12 struct snd_pcm_hw_params *params)
14 struct snd_soc_pcm_runtime *rtd = substream->private_data;
15 struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
16 struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
20 switch (params_rate(params)) {
34 /* set codec DAI configuration */
35 ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S
36 | SND_SOC_DAIFMT_NB_NF
37 | SND_SOC_DAIFMT_CBS_CFS);
41 /* CPU should be clock master */
42 ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S
43 | SND_SOC_DAIFMT_NB_NF
44 | SND_SOC_DAIFMT_CBS_CFS);
48 ret = snd_soc_dai_set_sysclk(codec_dai, 0, clk,
53 /* set the I2S system clock as input (unused) */
54 ret = snd_soc_dai_set_sysclk(cpu_dai, PXA2XX_I2S_SYSCLK, clk,
60 static struct snd_soc_ops imote2_asoc_ops = {
61 .hw_params = imote2_asoc_hw_params,
64 static struct snd_soc_dai_link imote2_dai = {
66 .stream_name = "WM8940",
67 .cpu_dai = &pxa_i2s_dai,
68 .codec_dai = &wm8940_dai,
69 .ops = &imote2_asoc_ops,
72 static struct snd_soc_card snd_soc_imote2 = {
74 .platform = &pxa2xx_soc_platform,
75 .dai_link = &imote2_dai,
79 static struct snd_soc_device imote2_snd_devdata = {
80 .card = &snd_soc_imote2,
81 .codec_dev = &soc_codec_dev_wm8940,
84 static struct platform_device *imote2_snd_device;
86 static int __init imote2_asoc_init(void)
90 if (!machine_is_intelmote2())
92 imote2_snd_device = platform_device_alloc("soc-audio", -1);
93 if (!imote2_snd_device)
96 platform_set_drvdata(imote2_snd_device, &imote2_snd_devdata);
97 imote2_snd_devdata.dev = &imote2_snd_device->dev;
98 ret = platform_device_add(imote2_snd_device);
100 platform_device_put(imote2_snd_device);
104 module_init(imote2_asoc_init);
106 static void __exit imote2_asoc_exit(void)
108 platform_device_unregister(imote2_snd_device);
110 module_exit(imote2_asoc_exit);
112 MODULE_AUTHOR("Jonathan Cameron");
113 MODULE_DESCRIPTION("ALSA SoC Imote 2");
114 MODULE_LICENSE("GPL");