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178 lines
4.7 KiB
178 lines
4.7 KiB
// SPDX-License-Identifier: GPL-2.0 |
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/* |
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* mt2701-wm8960.c -- MT2701 WM8960 ALSA SoC machine driver |
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* |
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* Copyright (c) 2017 MediaTek Inc. |
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* Author: Ryder Lee <[email protected]> |
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*/ |
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#include <linux/module.h> |
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#include <sound/soc.h> |
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#include "mt2701-afe-common.h" |
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static const struct snd_soc_dapm_widget mt2701_wm8960_widgets[] = { |
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SND_SOC_DAPM_HP("Headphone", NULL), |
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SND_SOC_DAPM_MIC("AMIC", NULL), |
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}; |
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static const struct snd_kcontrol_new mt2701_wm8960_controls[] = { |
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SOC_DAPM_PIN_SWITCH("Headphone"), |
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SOC_DAPM_PIN_SWITCH("AMIC"), |
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}; |
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static int mt2701_wm8960_be_ops_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 mclk_rate; |
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unsigned int rate = params_rate(params); |
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unsigned int div_mclk_over_bck = rate > 192000 ? 2 : 4; |
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unsigned int div_bck_over_lrck = 64; |
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mclk_rate = rate * div_bck_over_lrck * div_mclk_over_bck; |
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snd_soc_dai_set_sysclk(cpu_dai, 0, mclk_rate, SND_SOC_CLOCK_OUT); |
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snd_soc_dai_set_sysclk(codec_dai, 0, mclk_rate, SND_SOC_CLOCK_IN); |
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return 0; |
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} |
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static struct snd_soc_ops mt2701_wm8960_be_ops = { |
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.hw_params = mt2701_wm8960_be_ops_hw_params |
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}; |
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SND_SOC_DAILINK_DEFS(playback, |
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DAILINK_COMP_ARRAY(COMP_CPU("PCMO0")), |
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DAILINK_COMP_ARRAY(COMP_DUMMY()), |
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DAILINK_COMP_ARRAY(COMP_EMPTY())); |
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SND_SOC_DAILINK_DEFS(capture, |
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DAILINK_COMP_ARRAY(COMP_CPU("PCM0")), |
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DAILINK_COMP_ARRAY(COMP_DUMMY()), |
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DAILINK_COMP_ARRAY(COMP_EMPTY())); |
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SND_SOC_DAILINK_DEFS(codec, |
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DAILINK_COMP_ARRAY(COMP_CPU("I2S0")), |
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DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "wm8960-hifi")), |
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DAILINK_COMP_ARRAY(COMP_EMPTY())); |
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static struct snd_soc_dai_link mt2701_wm8960_dai_links[] = { |
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/* FE */ |
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{ |
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.name = "wm8960-playback", |
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.stream_name = "wm8960-playback", |
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.trigger = {SND_SOC_DPCM_TRIGGER_POST, |
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SND_SOC_DPCM_TRIGGER_POST}, |
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.dynamic = 1, |
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.dpcm_playback = 1, |
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SND_SOC_DAILINK_REG(playback), |
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}, |
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{ |
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.name = "wm8960-capture", |
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.stream_name = "wm8960-capture", |
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.trigger = {SND_SOC_DPCM_TRIGGER_POST, |
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SND_SOC_DPCM_TRIGGER_POST}, |
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.dynamic = 1, |
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.dpcm_capture = 1, |
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SND_SOC_DAILINK_REG(capture), |
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}, |
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/* BE */ |
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{ |
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.name = "wm8960-codec", |
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.no_pcm = 1, |
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.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBS_CFS |
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| SND_SOC_DAIFMT_GATED, |
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.ops = &mt2701_wm8960_be_ops, |
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.dpcm_playback = 1, |
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.dpcm_capture = 1, |
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SND_SOC_DAILINK_REG(codec), |
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}, |
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}; |
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static struct snd_soc_card mt2701_wm8960_card = { |
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.name = "mt2701-wm8960", |
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.owner = THIS_MODULE, |
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.dai_link = mt2701_wm8960_dai_links, |
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.num_links = ARRAY_SIZE(mt2701_wm8960_dai_links), |
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.controls = mt2701_wm8960_controls, |
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.num_controls = ARRAY_SIZE(mt2701_wm8960_controls), |
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.dapm_widgets = mt2701_wm8960_widgets, |
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.num_dapm_widgets = ARRAY_SIZE(mt2701_wm8960_widgets), |
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}; |
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static int mt2701_wm8960_machine_probe(struct platform_device *pdev) |
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{ |
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struct snd_soc_card *card = &mt2701_wm8960_card; |
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struct device_node *platform_node, *codec_node; |
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struct snd_soc_dai_link *dai_link; |
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int ret, i; |
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platform_node = of_parse_phandle(pdev->dev.of_node, |
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"mediatek,platform", 0); |
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if (!platform_node) { |
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dev_err(&pdev->dev, "Property 'platform' missing or invalid\n"); |
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return -EINVAL; |
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} |
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for_each_card_prelinks(card, i, dai_link) { |
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if (dai_link->platforms->name) |
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continue; |
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dai_link->platforms->of_node = platform_node; |
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} |
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card->dev = &pdev->dev; |
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codec_node = of_parse_phandle(pdev->dev.of_node, |
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"mediatek,audio-codec", 0); |
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if (!codec_node) { |
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dev_err(&pdev->dev, |
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"Property 'audio-codec' missing or invalid\n"); |
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return -EINVAL; |
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} |
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for_each_card_prelinks(card, i, dai_link) { |
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if (dai_link->codecs->name) |
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continue; |
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dai_link->codecs->of_node = codec_node; |
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} |
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ret = snd_soc_of_parse_audio_routing(card, "audio-routing"); |
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if (ret) { |
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dev_err(&pdev->dev, "failed to parse audio-routing: %d\n", ret); |
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return ret; |
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} |
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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, "%s snd_soc_register_card fail %d\n", |
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__func__, ret); |
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return ret; |
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} |
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#ifdef CONFIG_OF |
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static const struct of_device_id mt2701_wm8960_machine_dt_match[] = { |
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{.compatible = "mediatek,mt2701-wm8960-machine",}, |
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{} |
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}; |
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#endif |
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static struct platform_driver mt2701_wm8960_machine = { |
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.driver = { |
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.name = "mt2701-wm8960", |
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#ifdef CONFIG_OF |
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.of_match_table = mt2701_wm8960_machine_dt_match, |
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#endif |
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}, |
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.probe = mt2701_wm8960_machine_probe, |
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}; |
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module_platform_driver(mt2701_wm8960_machine); |
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/* Module information */ |
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MODULE_DESCRIPTION("MT2701 WM8960 ALSA SoC machine driver"); |
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MODULE_AUTHOR("Ryder Lee <[email protected]>"); |
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MODULE_LICENSE("GPL v2"); |
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MODULE_ALIAS("mt2701 wm8960 soc card"); |
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