sound/soc/samsung/tobermory.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 //
   3 // Tobermory audio support
   4 //
   5 // Copyright 2011 Wolfson Microelectronics
   6
   7 #include <sound/soc.h>
   8 #include <sound/soc-dapm.h>
   9 #include <sound/jack.h>
  10 #include <linux/gpio.h>
  11 #include <linux/module.h>
  12
  13 #include "../codecs/wm8962.h"
  14
  15 static int sample_rate = 44100;
  16
  17 static int tobermory_set_bias_level(struct snd_soc_card *card,
  18                                           struct snd_soc_dapm_context *dapm,
  19                                           enum snd_soc_bias_level level)
  20 {
  21         struct snd_soc_pcm_runtime *rtd;
  22         struct snd_soc_dai *codec_dai;
  23         int ret;
  24
  25         rtd = snd_soc_get_pcm_runtime(card, &card->dai_link[0]);
  26         codec_dai = asoc_rtd_to_codec(rtd, 0);
  27
  28         if (dapm->dev != codec_dai->dev)
  29                 return 0;
  30
  31         switch (level) {
  32         case SND_SOC_BIAS_PREPARE:
  33                 if (dapm->bias_level == SND_SOC_BIAS_STANDBY) {
  34                         ret = snd_soc_dai_set_pll(codec_dai, WM8962_FLL,
  35                                                   WM8962_FLL_MCLK, 32768,
  36                                                   sample_rate * 512);
  37                         if (ret < 0)
  38                                 pr_err("Failed to start FLL: %d\n", ret);
  39
  40                         ret = snd_soc_dai_set_sysclk(codec_dai,
  41                                                      WM8962_SYSCLK_FLL,
  42                                                      sample_rate * 512,
  43                                                      SND_SOC_CLOCK_IN);
  44                         if (ret < 0) {
  45                                 pr_err("Failed to set SYSCLK: %d\n", ret);
  46                                 snd_soc_dai_set_pll(codec_dai, WM8962_FLL,
  47                                                     0, 0, 0);
  48                                 return ret;
  49                         }
  50                 }
  51                 break;
  52
  53         default:
  54                 break;
  55         }
  56
  57         return 0;
  58 }
  59
  60 static int tobermory_set_bias_level_post(struct snd_soc_card *card,
  61                                                struct snd_soc_dapm_context *dapm,
  62                                                enum snd_soc_bias_level level)
  63 {
  64         struct snd_soc_pcm_runtime *rtd;
  65         struct snd_soc_dai *codec_dai;
  66         int ret;
  67
  68         rtd = snd_soc_get_pcm_runtime(card, &card->dai_link[0]);
  69         codec_dai = asoc_rtd_to_codec(rtd, 0);
  70
  71         if (dapm->dev != codec_dai->dev)
  72                 return 0;
  73
  74         switch (level) {
  75         case SND_SOC_BIAS_STANDBY:
  76                 ret = snd_soc_dai_set_sysclk(codec_dai, WM8962_SYSCLK_MCLK,
  77                                              32768, SND_SOC_CLOCK_IN);
  78                 if (ret < 0) {
  79                         pr_err("Failed to switch away from FLL: %d\n", ret);
  80                         return ret;
  81                 }
  82
  83                 ret = snd_soc_dai_set_pll(codec_dai, WM8962_FLL,
  84                                           0, 0, 0);
  85                 if (ret < 0) {
  86                         pr_err("Failed to stop FLL: %d\n", ret);
  87                         return ret;
  88                 }
  89                 break;
  90
  91         default:
  92                 break;
  93         }
  94
  95         dapm->bias_level = level;
  96
  97         return 0;
  98 }
  99
 100 static int tobermory_hw_params(struct snd_pcm_substream *substream,
 101                               struct snd_pcm_hw_params *params)
 102 {
 103         sample_rate = params_rate(params);
 104
 105         return 0;
 106 }
 107
 108 static struct snd_soc_ops tobermory_ops = {
 109         .hw_params = tobermory_hw_params,
 110 };
 111
 112 SND_SOC_DAILINK_DEFS(cpu,
 113         DAILINK_COMP_ARRAY(COMP_CPU("samsung-i2s.0")),
 114         DAILINK_COMP_ARRAY(COMP_CODEC("wm8962.1-001a", "wm8962")),
 115         DAILINK_COMP_ARRAY(COMP_PLATFORM("samsung-i2s.0")));
 116
 117 static struct snd_soc_dai_link tobermory_dai[] = {
 118         {
 119                 .name = "CPU",
 120                 .stream_name = "CPU",
 121                 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
 122                                 | SND_SOC_DAIFMT_CBM_CFM,
 123                 .ops = &tobermory_ops,
 124                 SND_SOC_DAILINK_REG(cpu),
 125         },
 126 };
 127
 128 static const struct snd_kcontrol_new controls[] = {
 129         SOC_DAPM_PIN_SWITCH("Main Speaker"),
 130         SOC_DAPM_PIN_SWITCH("DMIC"),
 131 };
 132
 133 static struct snd_soc_dapm_widget widgets[] = {
 134         SND_SOC_DAPM_HP("Headphone", NULL),
 135         SND_SOC_DAPM_MIC("Headset Mic", NULL),
 136
 137         SND_SOC_DAPM_MIC("DMIC", NULL),
 138         SND_SOC_DAPM_MIC("AMIC", NULL),
 139
 140         SND_SOC_DAPM_SPK("Main Speaker", NULL),
 141 };
 142
 143 static struct snd_soc_dapm_route audio_paths[] = {
 144         { "Headphone", NULL, "HPOUTL" },
 145         { "Headphone", NULL, "HPOUTR" },
 146
 147         { "Main Speaker", NULL, "SPKOUTL" },
 148         { "Main Speaker", NULL, "SPKOUTR" },
 149
 150         { "Headset Mic", NULL, "MICBIAS" },
 151         { "IN4L", NULL, "Headset Mic" },
 152         { "IN4R", NULL, "Headset Mic" },
 153
 154         { "AMIC", NULL, "MICBIAS" },
 155         { "IN1L", NULL, "AMIC" },
 156         { "IN1R", NULL, "AMIC" },
 157
 158         { "DMIC", NULL, "MICBIAS" },
 159         { "DMICDAT", NULL, "DMIC" },
 160 };
 161
 162 static struct snd_soc_jack tobermory_headset;
 163
 164 /* Headset jack detection DAPM pins */
 165 static struct snd_soc_jack_pin tobermory_headset_pins[] = {
 166         {
 167                 .pin = "Headset Mic",
 168                 .mask = SND_JACK_MICROPHONE,
 169         },
 170         {
 171                 .pin = "Headphone",
 172                 .mask = SND_JACK_MICROPHONE,
 173         },
 174 };
 175
 176 static int tobermory_late_probe(struct snd_soc_card *card)
 177 {
 178         struct snd_soc_pcm_runtime *rtd;
 179         struct snd_soc_component *component;
 180         struct snd_soc_dai *codec_dai;
 181         int ret;
 182
 183         rtd = snd_soc_get_pcm_runtime(card, &card->dai_link[0]);
 184         component = asoc_rtd_to_codec(rtd, 0)->component;
 185         codec_dai = asoc_rtd_to_codec(rtd, 0);
 186
 187         ret = snd_soc_dai_set_sysclk(codec_dai, WM8962_SYSCLK_MCLK,
 188                                      32768, SND_SOC_CLOCK_IN);
 189         if (ret < 0)
 190                 return ret;
 191
 192         ret = snd_soc_card_jack_new(card, "Headset", SND_JACK_HEADSET |
 193                                     SND_JACK_BTN_0, &tobermory_headset,
 194                                     tobermory_headset_pins,
 195                                     ARRAY_SIZE(tobermory_headset_pins));
 196         if (ret)
 197                 return ret;
 198
 199         wm8962_mic_detect(component, &tobermory_headset);
 200
 201         return 0;
 202 }
 203
 204 static struct snd_soc_card tobermory = {
 205         .name = "Tobermory",
 206         .owner = THIS_MODULE,
 207         .dai_link = tobermory_dai,
 208         .num_links = ARRAY_SIZE(tobermory_dai),
 209
 210         .set_bias_level = tobermory_set_bias_level,
 211         .set_bias_level_post = tobermory_set_bias_level_post,
 212
 213         .controls = controls,
 214         .num_controls = ARRAY_SIZE(controls),
 215         .dapm_widgets = widgets,
 216         .num_dapm_widgets = ARRAY_SIZE(widgets),
 217         .dapm_routes = audio_paths,
 218         .num_dapm_routes = ARRAY_SIZE(audio_paths),
 219         .fully_routed = true,
 220
 221         .late_probe = tobermory_late_probe,
 222 };
 223
 224 static int tobermory_probe(struct platform_device *pdev)
 225 {
 226         struct snd_soc_card *card = &tobermory;
 227         int ret;
 228
 229         card->dev = &pdev->dev;
 230
 231         ret = devm_snd_soc_register_card(&pdev->dev, card);
 232         if (ret && ret != -EPROBE_DEFER)
 233                 dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
 234                         ret);
 235
 236         return ret;
 237 }
 238
 239 static struct platform_driver tobermory_driver = {
 240         .driver = {
 241                 .name = "tobermory",
 242                 .pm = &snd_soc_pm_ops,
 243         },
 244         .probe = tobermory_probe,
 245 };
 246
 247 module_platform_driver(tobermory_driver);
 248
 249 MODULE_DESCRIPTION("Tobermory audio support");
 250 MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
 251 MODULE_LICENSE("GPL");
 252 MODULE_ALIAS("platform:tobermory");