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1// SPDX-License-Identifier: GPL-2.02/*3 * mt2701-wm8960.c -- MT2701 WM8960 ALSA SoC machine driver4 *5 * Copyright (c) 2017 MediaTek Inc.6 * Author: Ryder Lee <ryder.lee@mediatek.com>7 */8 9#include <linux/module.h>10#include <sound/soc.h>11 12#include "mt2701-afe-common.h"13 14static const struct snd_soc_dapm_widget mt2701_wm8960_widgets[] = {15 SND_SOC_DAPM_HP("Headphone", NULL),16 SND_SOC_DAPM_MIC("AMIC", NULL),17};18 19static const struct snd_kcontrol_new mt2701_wm8960_controls[] = {20 SOC_DAPM_PIN_SWITCH("Headphone"),21 SOC_DAPM_PIN_SWITCH("AMIC"),22};23 24static int mt2701_wm8960_be_ops_hw_params(struct snd_pcm_substream *substream,25 struct snd_pcm_hw_params *params)26{27 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);28 struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(rtd, 0);29 struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);30 unsigned int mclk_rate;31 unsigned int rate = params_rate(params);32 unsigned int div_mclk_over_bck = rate > 192000 ? 2 : 4;33 unsigned int div_bck_over_lrck = 64;34 35 mclk_rate = rate * div_bck_over_lrck * div_mclk_over_bck;36 37 snd_soc_dai_set_sysclk(cpu_dai, 0, mclk_rate, SND_SOC_CLOCK_OUT);38 snd_soc_dai_set_sysclk(codec_dai, 0, mclk_rate, SND_SOC_CLOCK_IN);39 40 return 0;41}42 43static const struct snd_soc_ops mt2701_wm8960_be_ops = {44 .hw_params = mt2701_wm8960_be_ops_hw_params45};46 47SND_SOC_DAILINK_DEFS(playback,48 DAILINK_COMP_ARRAY(COMP_CPU("PCMO0")),49 DAILINK_COMP_ARRAY(COMP_DUMMY()),50 DAILINK_COMP_ARRAY(COMP_EMPTY()));51 52SND_SOC_DAILINK_DEFS(capture,53 DAILINK_COMP_ARRAY(COMP_CPU("PCM0")),54 DAILINK_COMP_ARRAY(COMP_DUMMY()),55 DAILINK_COMP_ARRAY(COMP_EMPTY()));56 57SND_SOC_DAILINK_DEFS(codec,58 DAILINK_COMP_ARRAY(COMP_CPU("I2S0")),59 DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "wm8960-hifi")),60 DAILINK_COMP_ARRAY(COMP_EMPTY()));61 62static struct snd_soc_dai_link mt2701_wm8960_dai_links[] = {63 /* FE */64 {65 .name = "wm8960-playback",66 .stream_name = "wm8960-playback",67 .trigger = {SND_SOC_DPCM_TRIGGER_POST,68 SND_SOC_DPCM_TRIGGER_POST},69 .dynamic = 1,70 .dpcm_playback = 1,71 SND_SOC_DAILINK_REG(playback),72 },73 {74 .name = "wm8960-capture",75 .stream_name = "wm8960-capture",76 .trigger = {SND_SOC_DPCM_TRIGGER_POST,77 SND_SOC_DPCM_TRIGGER_POST},78 .dynamic = 1,79 .dpcm_capture = 1,80 SND_SOC_DAILINK_REG(capture),81 },82 /* BE */83 {84 .name = "wm8960-codec",85 .no_pcm = 1,86 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBS_CFS87 | SND_SOC_DAIFMT_GATED,88 .ops = &mt2701_wm8960_be_ops,89 .dpcm_playback = 1,90 .dpcm_capture = 1,91 SND_SOC_DAILINK_REG(codec),92 },93};94 95static struct snd_soc_card mt2701_wm8960_card = {96 .name = "mt2701-wm8960",97 .owner = THIS_MODULE,98 .dai_link = mt2701_wm8960_dai_links,99 .num_links = ARRAY_SIZE(mt2701_wm8960_dai_links),100 .controls = mt2701_wm8960_controls,101 .num_controls = ARRAY_SIZE(mt2701_wm8960_controls),102 .dapm_widgets = mt2701_wm8960_widgets,103 .num_dapm_widgets = ARRAY_SIZE(mt2701_wm8960_widgets),104};105 106static int mt2701_wm8960_machine_probe(struct platform_device *pdev)107{108 struct snd_soc_card *card = &mt2701_wm8960_card;109 struct device_node *platform_node, *codec_node;110 struct snd_soc_dai_link *dai_link;111 int ret, i;112 113 platform_node = of_parse_phandle(pdev->dev.of_node,114 "mediatek,platform", 0);115 if (!platform_node) {116 dev_err(&pdev->dev, "Property 'platform' missing or invalid\n");117 return -EINVAL;118 }119 for_each_card_prelinks(card, i, dai_link) {120 if (dai_link->platforms->name)121 continue;122 dai_link->platforms->of_node = platform_node;123 }124 125 card->dev = &pdev->dev;126 127 codec_node = of_parse_phandle(pdev->dev.of_node,128 "mediatek,audio-codec", 0);129 if (!codec_node) {130 dev_err(&pdev->dev,131 "Property 'audio-codec' missing or invalid\n");132 ret = -EINVAL;133 goto put_platform_node;134 }135 for_each_card_prelinks(card, i, dai_link) {136 if (dai_link->codecs->name)137 continue;138 dai_link->codecs->of_node = codec_node;139 }140 141 ret = snd_soc_of_parse_audio_routing(card, "audio-routing");142 if (ret) {143 dev_err(&pdev->dev, "failed to parse audio-routing: %d\n", ret);144 goto put_codec_node;145 }146 147 ret = devm_snd_soc_register_card(&pdev->dev, card);148 if (ret)149 dev_err(&pdev->dev, "%s snd_soc_register_card fail %d\n",150 __func__, ret);151 152put_codec_node:153 of_node_put(codec_node);154put_platform_node:155 of_node_put(platform_node);156 return ret;157}158 159#ifdef CONFIG_OF160static const struct of_device_id mt2701_wm8960_machine_dt_match[] = {161 {.compatible = "mediatek,mt2701-wm8960-machine",},162 {}163};164MODULE_DEVICE_TABLE(of, mt2701_wm8960_machine_dt_match);165#endif166 167static struct platform_driver mt2701_wm8960_machine = {168 .driver = {169 .name = "mt2701-wm8960",170#ifdef CONFIG_OF171 .of_match_table = mt2701_wm8960_machine_dt_match,172#endif173 },174 .probe = mt2701_wm8960_machine_probe,175};176 177module_platform_driver(mt2701_wm8960_machine);178 179/* Module information */180MODULE_DESCRIPTION("MT2701 WM8960 ALSA SoC machine driver");181MODULE_AUTHOR("Ryder Lee <ryder.lee@mediatek.com>");182MODULE_LICENSE("GPL v2");183MODULE_ALIAS("mt2701 wm8960 soc card");184 185