projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| a195b51b JC |
1 | |
| 2 | #include <linux/module.h> | |
| 3 | #include <sound/soc.h> | |
| 4 | ||
| 5 | #include <asm/mach-types.h> | |
| 6 | ||
| 7 | #include "../codecs/wm8940.h" | |
| 8 | #include "pxa2xx-i2s.h" | |
| a195b51b JC |
9 | |
| 10 | static int imote2_asoc_hw_params(struct snd_pcm_substream *substream, | |
| 11 | struct snd_pcm_hw_params *params) | |
| 12 | { | |
| 13 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
| f0fba2ad LG |
14 | struct snd_soc_dai *codec_dai = rtd->codec_dai; |
| 15 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
| a195b51b JC |
16 | unsigned int clk = 0; |
| 17 | int ret; | |
| 18 | ||
| 19 | switch (params_rate(params)) { | |
| 20 | case 8000: | |
| 21 | case 16000: | |
| 22 | case 48000: | |
| 23 | case 96000: | |
| 24 | clk = 12288000; | |
| 25 | break; | |
| 26 | case 11025: | |
| 27 | case 22050: | |
| 28 | case 44100: | |
| 29 | clk = 11289600; | |
| 30 | break; | |
| 31 | } | |
| 32 | ||
| 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); | |
| 37 | if (ret < 0) | |
| 38 | return ret; | |
| 39 | ||
| 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); | |
| 44 | if (ret < 0) | |
| 45 | return ret; | |
| 46 | ||
| 47 | ret = snd_soc_dai_set_sysclk(codec_dai, 0, clk, | |
| 48 | SND_SOC_CLOCK_IN); | |
| 49 | if (ret < 0) | |
| 50 | return ret; | |
| 51 | ||
| 52 | /* set the I2S system clock as input (unused) */ | |
| 53 | ret = snd_soc_dai_set_sysclk(cpu_dai, PXA2XX_I2S_SYSCLK, clk, | |
| 54 | SND_SOC_CLOCK_OUT); | |
| 55 | ||
| 56 | return ret; | |
| 57 | } | |
| 58 | ||
| 59 | static struct snd_soc_ops imote2_asoc_ops = { | |
| 60 | .hw_params = imote2_asoc_hw_params, | |
| 61 | }; | |
| 62 | ||
| 63 | static struct snd_soc_dai_link imote2_dai = { | |
| 64 | .name = "WM8940", | |
| 65 | .stream_name = "WM8940", | |
| f0fba2ad LG |
66 | .cpu_dai_name = "pxa-i2s", |
| 67 | .codec_dai_name = "wm8940-hifi", | |
| 68 | .platform_name = "pxa-pcm-audio", | |
| 69 | .codec_name = "wm8940-codec.0-0034", | |
| a195b51b JC |
70 | .ops = &imote2_asoc_ops, |
| 71 | }; | |
| 72 | ||
| 73 | static struct snd_soc_card snd_soc_imote2 = { | |
| 74 | .name = "Imote2", | |
| a195b51b JC |
75 | .dai_link = &imote2_dai, |
| 76 | .num_links = 1, | |
| 77 | }; | |
| 78 | ||
| a195b51b JC |
79 | static struct platform_device *imote2_snd_device; |
| 80 | ||
| 81 | static int __init imote2_asoc_init(void) | |
| 82 | { | |
| 83 | int ret; | |
| 84 | ||
| 85 | if (!machine_is_intelmote2()) | |
| 86 | return -ENODEV; | |
| 87 | imote2_snd_device = platform_device_alloc("soc-audio", -1); | |
| 88 | if (!imote2_snd_device) | |
| 89 | return -ENOMEM; | |
| 90 | ||
| f0fba2ad | 91 | platform_set_drvdata(imote2_snd_device, &snd_soc_imote2); |
| a195b51b JC |
92 | ret = platform_device_add(imote2_snd_device); |
| 93 | if (ret) | |
| 94 | platform_device_put(imote2_snd_device); | |
| 95 | ||
| 96 | return ret; | |
| 97 | } | |
| 98 | module_init(imote2_asoc_init); | |
| 99 | ||
| 100 | static void __exit imote2_asoc_exit(void) | |
| 101 | { | |
| 102 | platform_device_unregister(imote2_snd_device); | |
| 103 | } | |
| 104 | module_exit(imote2_asoc_exit); | |
| 105 | ||
| 106 | MODULE_AUTHOR("Jonathan Cameron"); | |
| 107 | MODULE_DESCRIPTION("ALSA SoC Imote 2"); | |
| 108 | MODULE_LICENSE("GPL"); |