184 lines
4.8 KiB
C
184 lines
4.8 KiB
C
// 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 <ryder.lee@mediatek.com>
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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 const 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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ret = -EINVAL;
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goto put_platform_node;
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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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goto put_codec_node;
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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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put_codec_node:
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of_node_put(codec_node);
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put_platform_node:
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of_node_put(platform_node);
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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 <ryder.lee@mediatek.com>");
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MODULE_LICENSE("GPL v2");
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MODULE_ALIAS("mt2701 wm8960 soc card");
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