| Kyle Swenson | 8d8f654 | 2021-03-15 11:02:55 -0600 | [diff] [blame^] | 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" |
| 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; |
| 14 | struct snd_soc_dai *codec_dai = rtd->codec_dai; |
| 15 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; |
| 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 | ret = snd_soc_dai_set_sysclk(codec_dai, 0, clk, |
| 34 | SND_SOC_CLOCK_IN); |
| 35 | if (ret < 0) |
| 36 | return ret; |
| 37 | |
| 38 | /* set the I2S system clock as input (unused) */ |
| 39 | ret = snd_soc_dai_set_sysclk(cpu_dai, PXA2XX_I2S_SYSCLK, clk, |
| 40 | SND_SOC_CLOCK_OUT); |
| 41 | |
| 42 | return ret; |
| 43 | } |
| 44 | |
| 45 | static struct snd_soc_ops imote2_asoc_ops = { |
| 46 | .hw_params = imote2_asoc_hw_params, |
| 47 | }; |
| 48 | |
| 49 | static struct snd_soc_dai_link imote2_dai = { |
| 50 | .name = "WM8940", |
| 51 | .stream_name = "WM8940", |
| 52 | .cpu_dai_name = "pxa2xx-i2s", |
| 53 | .codec_dai_name = "wm8940-hifi", |
| 54 | .platform_name = "pxa-pcm-audio", |
| 55 | .codec_name = "wm8940-codec.0-0034", |
| 56 | .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | |
| 57 | SND_SOC_DAIFMT_CBS_CFS, |
| 58 | .ops = &imote2_asoc_ops, |
| 59 | }; |
| 60 | |
| 61 | static struct snd_soc_card imote2 = { |
| 62 | .name = "Imote2", |
| 63 | .owner = THIS_MODULE, |
| 64 | .dai_link = &imote2_dai, |
| 65 | .num_links = 1, |
| 66 | }; |
| 67 | |
| 68 | static int imote2_probe(struct platform_device *pdev) |
| 69 | { |
| 70 | struct snd_soc_card *card = &imote2; |
| 71 | int ret; |
| 72 | |
| 73 | card->dev = &pdev->dev; |
| 74 | |
| 75 | ret = devm_snd_soc_register_card(&pdev->dev, card); |
| 76 | if (ret) |
| 77 | dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n", |
| 78 | ret); |
| 79 | return ret; |
| 80 | } |
| 81 | |
| 82 | static struct platform_driver imote2_driver = { |
| 83 | .driver = { |
| 84 | .name = "imote2-audio", |
| 85 | .pm = &snd_soc_pm_ops, |
| 86 | }, |
| 87 | .probe = imote2_probe, |
| 88 | }; |
| 89 | |
| 90 | module_platform_driver(imote2_driver); |
| 91 | |
| 92 | MODULE_AUTHOR("Jonathan Cameron"); |
| 93 | MODULE_DESCRIPTION("ALSA SoC Imote 2"); |
| 94 | MODULE_LICENSE("GPL"); |
| 95 | MODULE_ALIAS("platform:imote2-audio"); |