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