sound/soc/ti/omap-abe-twl6040.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * omap-abe-twl6040.c  --  SoC audio for TI OMAP based boards with ABE and
   4  *                         twl6040 codec
   5  *
   6  * Author: Misael Lopez Cruz <misael.lopez@ti.com>
   7  */
   8
   9 #include <linux/clk.h>
  10 #include <linux/platform_device.h>
  11 #include <linux/mfd/twl6040.h>
  12 #include <linux/module.h>
  13 #include <linux/of.h>
  14
  15 #include <sound/core.h>
  16 #include <sound/pcm.h>
  17 #include <sound/soc.h>
  18 #include <sound/jack.h>
  19
  20 #include "omap-dmic.h"
  21 #include "omap-mcpdm.h"
  22 #include "../codecs/twl6040.h"
  23
  24 struct abe_twl6040 {
  25         struct snd_soc_card card;
  26         struct snd_soc_dai_link dai_links[2];
  27         int     jack_detection; /* board can detect jack events */
  28         int     mclk_freq;      /* MCLK frequency speed for twl6040 */
  29 };
  30
  31 static struct platform_device *dmic_codec_dev;
  32
  33 static int omap_abe_hw_params(struct snd_pcm_substream *substream,
  34         struct snd_pcm_hw_params *params)
  35 {
  36         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  37         struct snd_soc_dai *codec_dai = rtd->codec_dai;
  38         struct snd_soc_card *card = rtd->card;
  39         struct abe_twl6040 *priv = snd_soc_card_get_drvdata(card);
  40         int clk_id, freq;
  41         int ret;
  42
  43         clk_id = twl6040_get_clk_id(codec_dai->component);
  44         if (clk_id == TWL6040_SYSCLK_SEL_HPPLL)
  45                 freq = priv->mclk_freq;
  46         else if (clk_id == TWL6040_SYSCLK_SEL_LPPLL)
  47                 freq = 32768;
  48         else
  49                 return -EINVAL;
  50
  51         /* set the codec mclk */
  52         ret = snd_soc_dai_set_sysclk(codec_dai, clk_id, freq,
  53                                 SND_SOC_CLOCK_IN);
  54         if (ret) {
  55                 printk(KERN_ERR "can't set codec system clock\n");
  56                 return ret;
  57         }
  58         return ret;
  59 }
  60
  61 static const struct snd_soc_ops omap_abe_ops = {
  62         .hw_params = omap_abe_hw_params,
  63 };
  64
  65 static int omap_abe_dmic_hw_params(struct snd_pcm_substream *substream,
  66         struct snd_pcm_hw_params *params)
  67 {
  68         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  69         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
  70         int ret = 0;
  71
  72         ret = snd_soc_dai_set_sysclk(cpu_dai, OMAP_DMIC_SYSCLK_PAD_CLKS,
  73                                      19200000, SND_SOC_CLOCK_IN);
  74         if (ret < 0) {
  75                 printk(KERN_ERR "can't set DMIC cpu system clock\n");
  76                 return ret;
  77         }
  78         ret = snd_soc_dai_set_sysclk(cpu_dai, OMAP_DMIC_ABE_DMIC_CLK, 2400000,
  79                                      SND_SOC_CLOCK_OUT);
  80         if (ret < 0) {
  81                 printk(KERN_ERR "can't set DMIC output clock\n");
  82                 return ret;
  83         }
  84         return 0;
  85 }
  86
  87 static struct snd_soc_ops omap_abe_dmic_ops = {
  88         .hw_params = omap_abe_dmic_hw_params,
  89 };
  90
  91 /* Headset jack */
  92 static struct snd_soc_jack hs_jack;
  93
  94 /*Headset jack detection DAPM pins */
  95 static struct snd_soc_jack_pin hs_jack_pins[] = {
  96         {
  97                 .pin = "Headset Mic",
  98                 .mask = SND_JACK_MICROPHONE,
  99         },
 100         {
 101                 .pin = "Headset Stereophone",
 102                 .mask = SND_JACK_HEADPHONE,
 103         },
 104 };
 105
 106 /* SDP4430 machine DAPM */
 107 static const struct snd_soc_dapm_widget twl6040_dapm_widgets[] = {
 108         /* Outputs */
 109         SND_SOC_DAPM_HP("Headset Stereophone", NULL),
 110         SND_SOC_DAPM_SPK("Earphone Spk", NULL),
 111         SND_SOC_DAPM_SPK("Ext Spk", NULL),
 112         SND_SOC_DAPM_LINE("Line Out", NULL),
 113         SND_SOC_DAPM_SPK("Vibrator", NULL),
 114
 115         /* Inputs */
 116         SND_SOC_DAPM_MIC("Headset Mic", NULL),
 117         SND_SOC_DAPM_MIC("Main Handset Mic", NULL),
 118         SND_SOC_DAPM_MIC("Sub Handset Mic", NULL),
 119         SND_SOC_DAPM_LINE("Line In", NULL),
 120
 121         /* Digital microphones */
 122         SND_SOC_DAPM_MIC("Digital Mic", NULL),
 123 };
 124
 125 static const struct snd_soc_dapm_route audio_map[] = {
 126         /* Routings for outputs */
 127         {"Headset Stereophone", NULL, "HSOL"},
 128         {"Headset Stereophone", NULL, "HSOR"},
 129
 130         {"Earphone Spk", NULL, "EP"},
 131
 132         {"Ext Spk", NULL, "HFL"},
 133         {"Ext Spk", NULL, "HFR"},
 134
 135         {"Line Out", NULL, "AUXL"},
 136         {"Line Out", NULL, "AUXR"},
 137
 138         {"Vibrator", NULL, "VIBRAL"},
 139         {"Vibrator", NULL, "VIBRAR"},
 140
 141         /* Routings for inputs */
 142         {"HSMIC", NULL, "Headset Mic"},
 143         {"Headset Mic", NULL, "Headset Mic Bias"},
 144
 145         {"MAINMIC", NULL, "Main Handset Mic"},
 146         {"Main Handset Mic", NULL, "Main Mic Bias"},
 147
 148         {"SUBMIC", NULL, "Sub Handset Mic"},
 149         {"Sub Handset Mic", NULL, "Main Mic Bias"},
 150
 151         {"AFML", NULL, "Line In"},
 152         {"AFMR", NULL, "Line In"},
 153 };
 154
 155 static int omap_abe_twl6040_init(struct snd_soc_pcm_runtime *rtd)
 156 {
 157         struct snd_soc_component *component = rtd->codec_dai->component;
 158         struct snd_soc_card *card = rtd->card;
 159         struct abe_twl6040 *priv = snd_soc_card_get_drvdata(card);
 160         int hs_trim;
 161         int ret = 0;
 162
 163         /*
 164          * Configure McPDM offset cancellation based on the HSOTRIM value from
 165          * twl6040.
 166          */
 167         hs_trim = twl6040_get_trim_value(component, TWL6040_TRIM_HSOTRIM);
 168         omap_mcpdm_configure_dn_offsets(rtd, TWL6040_HSF_TRIM_LEFT(hs_trim),
 169                                         TWL6040_HSF_TRIM_RIGHT(hs_trim));
 170
 171         /* Headset jack detection only if it is supported */
 172         if (priv->jack_detection) {
 173                 ret = snd_soc_card_jack_new(rtd->card, "Headset Jack",
 174                                             SND_JACK_HEADSET, &hs_jack,
 175                                             hs_jack_pins,
 176                                             ARRAY_SIZE(hs_jack_pins));
 177                 if (ret)
 178                         return ret;
 179
 180                 twl6040_hs_jack_detect(component, &hs_jack, SND_JACK_HEADSET);
 181         }
 182
 183         return 0;
 184 }
 185
 186 static const struct snd_soc_dapm_route dmic_audio_map[] = {
 187         {"DMic", NULL, "Digital Mic"},
 188         {"Digital Mic", NULL, "Digital Mic1 Bias"},
 189 };
 190
 191 static int omap_abe_dmic_init(struct snd_soc_pcm_runtime *rtd)
 192 {
 193         struct snd_soc_dapm_context *dapm = &rtd->card->dapm;
 194
 195         return snd_soc_dapm_add_routes(dapm, dmic_audio_map,
 196                                 ARRAY_SIZE(dmic_audio_map));
 197 }
 198
 199 static int omap_abe_probe(struct platform_device *pdev)
 200 {
 201         struct device_node *node = pdev->dev.of_node;
 202         struct snd_soc_card *card;
 203         struct device_node *dai_node;
 204         struct abe_twl6040 *priv;
 205         int num_links = 0;
 206         int ret = 0;
 207
 208         if (!node) {
 209                 dev_err(&pdev->dev, "of node is missing.\n");
 210                 return -ENODEV;
 211         }
 212
 213         priv = devm_kzalloc(&pdev->dev, sizeof(struct abe_twl6040), GFP_KERNEL);
 214         if (priv == NULL)
 215                 return -ENOMEM;
 216
 217         card = &priv->card;
 218         card->dev = &pdev->dev;
 219         card->owner = THIS_MODULE;
 220         card->dapm_widgets = twl6040_dapm_widgets;
 221         card->num_dapm_widgets = ARRAY_SIZE(twl6040_dapm_widgets);
 222         card->dapm_routes = audio_map;
 223         card->num_dapm_routes = ARRAY_SIZE(audio_map);
 224
 225         if (snd_soc_of_parse_card_name(card, "ti,model")) {
 226                 dev_err(&pdev->dev, "Card name is not provided\n");
 227                 return -ENODEV;
 228         }
 229
 230         ret = snd_soc_of_parse_audio_routing(card, "ti,audio-routing");
 231         if (ret) {
 232                 dev_err(&pdev->dev, "Error while parsing DAPM routing\n");
 233                 return ret;
 234         }
 235
 236         dai_node = of_parse_phandle(node, "ti,mcpdm", 0);
 237         if (!dai_node) {
 238                 dev_err(&pdev->dev, "McPDM node is not provided\n");
 239                 return -EINVAL;
 240         }
 241
 242         priv->dai_links[0].name = "DMIC";
 243         priv->dai_links[0].stream_name = "TWL6040";
 244         priv->dai_links[0].cpu_of_node = dai_node;
 245         priv->dai_links[0].platform_of_node = dai_node;
 246         priv->dai_links[0].codec_dai_name = "twl6040-legacy";
 247         priv->dai_links[0].codec_name = "twl6040-codec";
 248         priv->dai_links[0].init = omap_abe_twl6040_init;
 249         priv->dai_links[0].ops = &omap_abe_ops;
 250
 251         dai_node = of_parse_phandle(node, "ti,dmic", 0);
 252         if (dai_node) {
 253                 num_links = 2;
 254                 priv->dai_links[1].name = "TWL6040";
 255                 priv->dai_links[1].stream_name = "DMIC Capture";
 256                 priv->dai_links[1].cpu_of_node = dai_node;
 257                 priv->dai_links[1].platform_of_node = dai_node;
 258                 priv->dai_links[1].codec_dai_name = "dmic-hifi";
 259                 priv->dai_links[1].codec_name = "dmic-codec";
 260                 priv->dai_links[1].init = omap_abe_dmic_init;
 261                 priv->dai_links[1].ops = &omap_abe_dmic_ops;
 262         } else {
 263                 num_links = 1;
 264         }
 265
 266         priv->jack_detection = of_property_read_bool(node, "ti,jack-detection");
 267         of_property_read_u32(node, "ti,mclk-freq", &priv->mclk_freq);
 268         if (!priv->mclk_freq) {
 269                 dev_err(&pdev->dev, "MCLK frequency not provided\n");
 270                 return -EINVAL;
 271         }
 272
 273         card->fully_routed = 1;
 274
 275         if (!priv->mclk_freq) {
 276                 dev_err(&pdev->dev, "MCLK frequency missing\n");
 277                 return -ENODEV;
 278         }
 279
 280         card->dai_link = priv->dai_links;
 281         card->num_links = num_links;
 282
 283         snd_soc_card_set_drvdata(card, priv);
 284
 285         ret = devm_snd_soc_register_card(&pdev->dev, card);
 286         if (ret)
 287                 dev_err(&pdev->dev, "devm_snd_soc_register_card() failed: %d\n",
 288                         ret);
 289
 290         return ret;
 291 }
 292
 293 static const struct of_device_id omap_abe_of_match[] = {
 294         {.compatible = "ti,abe-twl6040", },
 295         { },
 296 };
 297 MODULE_DEVICE_TABLE(of, omap_abe_of_match);
 298
 299 static struct platform_driver omap_abe_driver = {
 300         .driver = {
 301                 .name = "omap-abe-twl6040",
 302                 .pm = &snd_soc_pm_ops,
 303                 .of_match_table = omap_abe_of_match,
 304         },
 305         .probe = omap_abe_probe,
 306 };
 307
 308 static int __init omap_abe_init(void)
 309 {
 310         int ret;
 311
 312         dmic_codec_dev = platform_device_register_simple("dmic-codec", -1, NULL,
 313                                                          0);
 314         if (IS_ERR(dmic_codec_dev)) {
 315                 pr_err("%s: dmic-codec device registration failed\n", __func__);
 316                 return PTR_ERR(dmic_codec_dev);
 317         }
 318
 319         ret = platform_driver_register(&omap_abe_driver);
 320         if (ret) {
 321                 pr_err("%s: platform driver registration failed\n", __func__);
 322                 platform_device_unregister(dmic_codec_dev);
 323         }
 324
 325         return ret;
 326 }
 327 module_init(omap_abe_init);
 328
 329 static void __exit omap_abe_exit(void)
 330 {
 331         platform_driver_unregister(&omap_abe_driver);
 332         platform_device_unregister(dmic_codec_dev);
 333 }
 334 module_exit(omap_abe_exit);
 335
 336 MODULE_AUTHOR("Misael Lopez Cruz <misael.lopez@ti.com>");
 337 MODULE_DESCRIPTION("ALSA SoC for OMAP boards with ABE and twl6040 codec");
 338 MODULE_LICENSE("GPL");
 339 MODULE_ALIAS("platform:omap-abe-twl6040");