sound/soc/mediatek/mt2701/mt2701-wm8960.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * mt2701-wm8960.c  --  MT2701 WM8960 ALSA SoC machine driver
   4  *
   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
  14 static 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
  19 static const struct snd_kcontrol_new mt2701_wm8960_controls[] = {
  20         SOC_DAPM_PIN_SWITCH("Headphone"),
  21         SOC_DAPM_PIN_SWITCH("AMIC"),
  22 };
  23
  24 static 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 = substream->private_data;
  28         struct snd_soc_dai *codec_dai = rtd->codec_dai;
  29         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
  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
  43 static struct snd_soc_ops mt2701_wm8960_be_ops = {
  44         .hw_params = mt2701_wm8960_be_ops_hw_params
  45 };
  46
  47 SND_SOC_DAILINK_DEFS(playback,
  48         DAILINK_COMP_ARRAY(COMP_CPU("PCMO0")),
  49         DAILINK_COMP_ARRAY(COMP_DUMMY()),
  50         DAILINK_COMP_ARRAY(COMP_EMPTY()));
  51
  52 SND_SOC_DAILINK_DEFS(capture,
  53         DAILINK_COMP_ARRAY(COMP_CPU("PCM0")),
  54         DAILINK_COMP_ARRAY(COMP_DUMMY()),
  55         DAILINK_COMP_ARRAY(COMP_EMPTY()));
  56
  57 SND_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
  62 static 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_CFS
  87                         | 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
  95 static 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
 106 static 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                 return -EINVAL;
 133         }
 134         for_each_card_prelinks(card, i, dai_link) {
 135                 if (dai_link->codecs->name)
 136                         continue;
 137                 dai_link->codecs->of_node = codec_node;
 138         }
 139
 140         ret = snd_soc_of_parse_audio_routing(card, "audio-routing");
 141         if (ret) {
 142                 dev_err(&pdev->dev, "failed to parse audio-routing: %d\n", ret);
 143                 return ret;
 144         }
 145
 146         ret = devm_snd_soc_register_card(&pdev->dev, card);
 147         if (ret)
 148                 dev_err(&pdev->dev, "%s snd_soc_register_card fail %d\n",
 149                         __func__, ret);
 150
 151         return ret;
 152 }
 153
 154 #ifdef CONFIG_OF
 155 static const struct of_device_id mt2701_wm8960_machine_dt_match[] = {
 156         {.compatible = "mediatek,mt2701-wm8960-machine",},
 157         {}
 158 };
 159 #endif
 160
 161 static struct platform_driver mt2701_wm8960_machine = {
 162         .driver = {
 163                 .name = "mt2701-wm8960",
 164 #ifdef CONFIG_OF
 165                 .of_match_table = mt2701_wm8960_machine_dt_match,
 166 #endif
 167         },
 168         .probe = mt2701_wm8960_machine_probe,
 169 };
 170
 171 module_platform_driver(mt2701_wm8960_machine);
 172
 173 /* Module information */
 174 MODULE_DESCRIPTION("MT2701 WM8960 ALSA SoC machine driver");
 175 MODULE_AUTHOR("Ryder Lee <ryder.lee@mediatek.com>");
 176 MODULE_LICENSE("GPL v2");
 177 MODULE_ALIAS("mt2701 wm8960 soc card");
 178