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99 lines
2.2 KiB
99 lines
2.2 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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#include <linux/module.h> |
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#include <sound/soc.h> |
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#include <asm/mach-types.h> |
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#include "../codecs/wm8940.h" |
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#include "pxa2xx-i2s.h" |
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static int imote2_asoc_hw_params(struct snd_pcm_substream *substream, |
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struct snd_pcm_hw_params *params) |
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{ |
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struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); |
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struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0); |
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struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0); |
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unsigned int clk = 0; |
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int ret; |
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switch (params_rate(params)) { |
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case 8000: |
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case 16000: |
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case 48000: |
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case 96000: |
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clk = 12288000; |
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break; |
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case 11025: |
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case 22050: |
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case 44100: |
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clk = 11289600; |
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break; |
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} |
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ret = snd_soc_dai_set_sysclk(codec_dai, 0, clk, |
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SND_SOC_CLOCK_IN); |
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if (ret < 0) |
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return ret; |
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/* set the I2S system clock as input (unused) */ |
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ret = snd_soc_dai_set_sysclk(cpu_dai, PXA2XX_I2S_SYSCLK, clk, |
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SND_SOC_CLOCK_OUT); |
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return ret; |
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} |
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static const struct snd_soc_ops imote2_asoc_ops = { |
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.hw_params = imote2_asoc_hw_params, |
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}; |
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SND_SOC_DAILINK_DEFS(wm8940, |
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DAILINK_COMP_ARRAY(COMP_CPU("pxa2xx-i2s")), |
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DAILINK_COMP_ARRAY(COMP_CODEC("wm8940-codec.0-0034", |
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"wm8940-hifi")), |
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DAILINK_COMP_ARRAY(COMP_PLATFORM("pxa-pcm-audio"))); |
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static struct snd_soc_dai_link imote2_dai = { |
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.name = "WM8940", |
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.stream_name = "WM8940", |
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.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | |
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SND_SOC_DAIFMT_CBS_CFS, |
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.ops = &imote2_asoc_ops, |
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SND_SOC_DAILINK_REG(wm8940), |
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}; |
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static struct snd_soc_card imote2 = { |
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.name = "Imote2", |
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.owner = THIS_MODULE, |
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.dai_link = &imote2_dai, |
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.num_links = 1, |
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}; |
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static int imote2_probe(struct platform_device *pdev) |
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{ |
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struct snd_soc_card *card = &imote2; |
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int ret; |
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card->dev = &pdev->dev; |
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ret = devm_snd_soc_register_card(&pdev->dev, card); |
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if (ret) |
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dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n", |
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ret); |
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return ret; |
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} |
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static struct platform_driver imote2_driver = { |
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.driver = { |
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.name = "imote2-audio", |
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.pm = &snd_soc_pm_ops, |
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}, |
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.probe = imote2_probe, |
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}; |
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module_platform_driver(imote2_driver); |
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MODULE_AUTHOR("Jonathan Cameron"); |
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MODULE_DESCRIPTION("ALSA SoC Imote 2"); |
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MODULE_LICENSE("GPL"); |
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MODULE_ALIAS("platform:imote2-audio");
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