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 SND_SOC_DAILINK_DEFS(link0,
  25         DAILINK_COMP_ARRAY(COMP_EMPTY()),
  26         DAILINK_COMP_ARRAY(COMP_CODEC("twl6040-codec",
  27                                       "twl6040-legacy")),
  28         DAILINK_COMP_ARRAY(COMP_EMPTY()));
  29
  30 SND_SOC_DAILINK_DEFS(link1,
  31         DAILINK_COMP_ARRAY(COMP_EMPTY()),
  32         DAILINK_COMP_ARRAY(COMP_CODEC("dmic-codec",
  33                                       "dmic-hifi")),
  34         DAILINK_COMP_ARRAY(COMP_EMPTY()));
  35
  36 struct abe_twl6040 {
  37         struct snd_soc_card card;
  38         struct snd_soc_dai_link dai_links[2];
  39         int     jack_detection; /* board can detect jack events */
  40         int     mclk_freq;      /* MCLK frequency speed for twl6040 */
  41 };
  42
  43 static struct platform_device *dmic_codec_dev;
  44
  45 static int omap_abe_hw_params(struct snd_pcm_substream *substream,
  46         struct snd_pcm_hw_params *params)
  47 {
  48         struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
  49         struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(rtd, 0);
  50         struct snd_soc_card *card = rtd->card;
  51         struct abe_twl6040 *priv = snd_soc_card_get_drvdata(card);
  52         int clk_id, freq;
  53         int ret;
  54
  55         clk_id = twl6040_get_clk_id(codec_dai->component);
  56         if (clk_id == TWL6040_SYSCLK_SEL_HPPLL)
  57                 freq = priv->mclk_freq;
  58         else if (clk_id == TWL6040_SYSCLK_SEL_LPPLL)
  59                 freq = 32768;
  60         else
  61                 return -EINVAL;
  62
  63         /* set the codec mclk */
  64         ret = snd_soc_dai_set_sysclk(codec_dai, clk_id, freq,
  65                                 SND_SOC_CLOCK_IN);
  66         if (ret) {
  67                 printk(KERN_ERR "can't set codec system clock\n");
  68                 return ret;
  69         }
  70         return ret;
  71 }
  72
  73 static const struct snd_soc_ops omap_abe_ops = {
  74         .hw_params = omap_abe_hw_params,
  75 };
  76
  77 static int omap_abe_dmic_hw_params(struct snd_pcm_substream *substream,
  78         struct snd_pcm_hw_params *params)
  79 {
  80         struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
  81         struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
  82         int ret = 0;
  83
  84         ret = snd_soc_dai_set_sysclk(cpu_dai, OMAP_DMIC_SYSCLK_PAD_CLKS,
  85                                      19200000, SND_SOC_CLOCK_IN);
  86         if (ret < 0) {
  87                 printk(KERN_ERR "can't set DMIC cpu system clock\n");
  88                 return ret;
  89         }
  90         ret = snd_soc_dai_set_sysclk(cpu_dai, OMAP_DMIC_ABE_DMIC_CLK, 2400000,
  91                                      SND_SOC_CLOCK_OUT);
  92         if (ret < 0) {
  93                 printk(KERN_ERR "can't set DMIC output clock\n");
  94                 return ret;
  95         }
  96         return 0;
  97 }
  98
  99 static const struct snd_soc_ops omap_abe_dmic_ops = {
 100         .hw_params = omap_abe_dmic_hw_params,
 101 };
 102
 103 /* Headset jack */
 104 static struct snd_soc_jack hs_jack;
 105
 106 /*Headset jack detection DAPM pins */
 107 static struct snd_soc_jack_pin hs_jack_pins[] = {
 108         {
 109                 .pin = "Headset Mic",
 110                 .mask = SND_JACK_MICROPHONE,
 111         },
 112         {
 113                 .pin = "Headset Stereophone",
 114                 .mask = SND_JACK_HEADPHONE,
 115         },
 116 };
 117
 118 /* SDP4430 machine DAPM */
 119 static const struct snd_soc_dapm_widget twl6040_dapm_widgets[] = {
 120         /* Outputs */
 121         SND_SOC_DAPM_HP("Headset Stereophone", NULL),
 122         SND_SOC_DAPM_SPK("Earphone Spk", NULL),
 123         SND_SOC_DAPM_SPK("Ext Spk", NULL),
 124         SND_SOC_DAPM_LINE("Line Out", NULL),
 125         SND_SOC_DAPM_SPK("Vibrator", NULL),
 126
 127         /* Inputs */
 128         SND_SOC_DAPM_MIC("Headset Mic", NULL),
 129         SND_SOC_DAPM_MIC("Main Handset Mic", NULL),
 130         SND_SOC_DAPM_MIC("Sub Handset Mic", NULL),
 131         SND_SOC_DAPM_LINE("Line In", NULL),
 132
 133         /* Digital microphones */
 134         SND_SOC_DAPM_MIC("Digital Mic", NULL),
 135 };
 136
 137 static const struct snd_soc_dapm_route audio_map[] = {
 138         /* Routings for outputs */
 139         {"Headset Stereophone", NULL, "HSOL"},
 140         {"Headset Stereophone", NULL, "HSOR"},
 141
 142         {"Earphone Spk", NULL, "EP"},
 143
 144         {"Ext Spk", NULL, "HFL"},
 145         {"Ext Spk", NULL, "HFR"},
 146
 147         {"Line Out", NULL, "AUXL"},
 148         {"Line Out", NULL, "AUXR"},
 149
 150         {"Vibrator", NULL, "VIBRAL"},
 151         {"Vibrator", NULL, "VIBRAR"},
 152
 153         /* Routings for inputs */
 154         {"HSMIC", NULL, "Headset Mic"},
 155         {"Headset Mic", NULL, "Headset Mic Bias"},
 156
 157         {"MAINMIC", NULL, "Main Handset Mic"},
 158         {"Main Handset Mic", NULL, "Main Mic Bias"},
 159
 160         {"SUBMIC", NULL, "Sub Handset Mic"},
 161         {"Sub Handset Mic", NULL, "Main Mic Bias"},
 162
 163         {"AFML", NULL, "Line In"},
 164         {"AFMR", NULL, "Line In"},
 165 };
 166
 167 static int omap_abe_twl6040_init(struct snd_soc_pcm_runtime *rtd)
 168 {
 169         struct snd_soc_component *component = snd_soc_rtd_to_codec(rtd, 0)->component;
 170         struct snd_soc_card *card = rtd->card;
 171         struct abe_twl6040 *priv = snd_soc_card_get_drvdata(card);
 172         int hs_trim;
 173         int ret;
 174
 175         /*
 176          * Configure McPDM offset cancellation based on the HSOTRIM value from
 177          * twl6040.
 178          */
 179         hs_trim = twl6040_get_trim_value(component, TWL6040_TRIM_HSOTRIM);
 180         omap_mcpdm_configure_dn_offsets(rtd, TWL6040_HSF_TRIM_LEFT(hs_trim),
 181                                         TWL6040_HSF_TRIM_RIGHT(hs_trim));
 182
 183         /* Headset jack detection only if it is supported */
 184         if (priv->jack_detection) {
 185                 ret = snd_soc_card_jack_new_pins(rtd->card, "Headset Jack",
 186                                                  SND_JACK_HEADSET, &hs_jack,
 187                                                  hs_jack_pins,
 188                                                  ARRAY_SIZE(hs_jack_pins));
 189                 if (ret)
 190                         return ret;
 191
 192                 twl6040_hs_jack_detect(component, &hs_jack, SND_JACK_HEADSET);
 193         }
 194
 195         return 0;
 196 }
 197
 198 static const struct snd_soc_dapm_route dmic_audio_map[] = {
 199         {"DMic", NULL, "Digital Mic"},
 200         {"Digital Mic", NULL, "Digital Mic1 Bias"},
 201 };
 202
 203 static int omap_abe_dmic_init(struct snd_soc_pcm_runtime *rtd)
 204 {
 205         struct snd_soc_dapm_context *dapm = &rtd->card->dapm;
 206
 207         return snd_soc_dapm_add_routes(dapm, dmic_audio_map,
 208                                 ARRAY_SIZE(dmic_audio_map));
 209 }
 210
 211 static int omap_abe_probe(struct platform_device *pdev)
 212 {
 213         struct device_node *node = pdev->dev.of_node;
 214         struct snd_soc_card *card;
 215         struct device_node *dai_node;
 216         struct abe_twl6040 *priv;
 217         int num_links = 0;
 218         int ret = 0;
 219
 220         if (!node) {
 221                 dev_err(&pdev->dev, "of node is missing.\n");
 222                 return -ENODEV;
 223         }
 224
 225         priv = devm_kzalloc(&pdev->dev, sizeof(struct abe_twl6040), GFP_KERNEL);
 226         if (priv == NULL)
 227                 return -ENOMEM;
 228
 229         card = &priv->card;
 230         card->dev = &pdev->dev;
 231         card->owner = THIS_MODULE;
 232         card->dapm_widgets = twl6040_dapm_widgets;
 233         card->num_dapm_widgets = ARRAY_SIZE(twl6040_dapm_widgets);
 234         card->dapm_routes = audio_map;
 235         card->num_dapm_routes = ARRAY_SIZE(audio_map);
 236
 237         if (snd_soc_of_parse_card_name(card, "ti,model")) {
 238                 dev_err(&pdev->dev, "Card name is not provided\n");
 239                 return -ENODEV;
 240         }
 241
 242         ret = snd_soc_of_parse_audio_routing(card, "ti,audio-routing");
 243         if (ret) {
 244                 dev_err(&pdev->dev, "Error while parsing DAPM routing\n");
 245                 return ret;
 246         }
 247
 248         dai_node = of_parse_phandle(node, "ti,mcpdm", 0);
 249         if (!dai_node) {
 250                 dev_err(&pdev->dev, "McPDM node is not provided\n");
 251                 return -EINVAL;
 252         }
 253
 254         priv->dai_links[0].name = "DMIC";
 255         priv->dai_links[0].stream_name = "TWL6040";
 256         priv->dai_links[0].cpus = link0_cpus;
 257         priv->dai_links[0].num_cpus = 1;
 258         priv->dai_links[0].cpus->of_node = dai_node;
 259         priv->dai_links[0].platforms = link0_platforms;
 260         priv->dai_links[0].num_platforms = 1;
 261         priv->dai_links[0].platforms->of_node = dai_node;
 262         priv->dai_links[0].codecs = link0_codecs;
 263         priv->dai_links[0].num_codecs = 1;
 264         priv->dai_links[0].init = omap_abe_twl6040_init;
 265         priv->dai_links[0].ops = &omap_abe_ops;
 266
 267         dai_node = of_parse_phandle(node, "ti,dmic", 0);
 268         if (dai_node) {
 269                 num_links = 2;
 270                 priv->dai_links[1].name = "TWL6040";
 271                 priv->dai_links[1].stream_name = "DMIC Capture";
 272                 priv->dai_links[1].cpus = link1_cpus;
 273                 priv->dai_links[1].num_cpus = 1;
 274                 priv->dai_links[1].cpus->of_node = dai_node;
 275                 priv->dai_links[1].platforms = link1_platforms;
 276                 priv->dai_links[1].num_platforms = 1;
 277                 priv->dai_links[1].platforms->of_node = dai_node;
 278                 priv->dai_links[1].codecs = link1_codecs;
 279                 priv->dai_links[1].num_codecs = 1;
 280                 priv->dai_links[1].init = omap_abe_dmic_init;
 281                 priv->dai_links[1].ops = &omap_abe_dmic_ops;
 282         } else {
 283                 num_links = 1;
 284         }
 285
 286         priv->jack_detection = of_property_read_bool(node, "ti,jack-detection");
 287         of_property_read_u32(node, "ti,mclk-freq", &priv->mclk_freq);
 288         if (!priv->mclk_freq) {
 289                 dev_err(&pdev->dev, "MCLK frequency not provided\n");
 290                 return -EINVAL;
 291         }
 292
 293         card->fully_routed = 1;
 294
 295         card->dai_link = priv->dai_links;
 296         card->num_links = num_links;
 297
 298         snd_soc_card_set_drvdata(card, priv);
 299
 300         ret = devm_snd_soc_register_card(&pdev->dev, card);
 301         if (ret)
 302                 dev_err(&pdev->dev, "devm_snd_soc_register_card() failed: %d\n",
 303                         ret);
 304
 305         return ret;
 306 }
 307
 308 static const struct of_device_id omap_abe_of_match[] = {
 309         {.compatible = "ti,abe-twl6040", },
 310         { },
 311 };
 312 MODULE_DEVICE_TABLE(of, omap_abe_of_match);
 313
 314 static struct platform_driver omap_abe_driver = {
 315         .driver = {
 316                 .name = "omap-abe-twl6040",
 317                 .pm = &snd_soc_pm_ops,
 318                 .of_match_table = omap_abe_of_match,
 319         },
 320         .probe = omap_abe_probe,
 321 };
 322
 323 static int __init omap_abe_init(void)
 324 {
 325         int ret;
 326
 327         dmic_codec_dev = platform_device_register_simple("dmic-codec", -1, NULL,
 328                                                          0);
 329         if (IS_ERR(dmic_codec_dev)) {
 330                 pr_err("%s: dmic-codec device registration failed\n", __func__);
 331                 return PTR_ERR(dmic_codec_dev);
 332         }
 333
 334         ret = platform_driver_register(&omap_abe_driver);
 335         if (ret) {
 336                 pr_err("%s: platform driver registration failed\n", __func__);
 337                 platform_device_unregister(dmic_codec_dev);
 338         }
 339
 340         return ret;
 341 }
 342 module_init(omap_abe_init);
 343
 344 static void __exit omap_abe_exit(void)
 345 {
 346         platform_driver_unregister(&omap_abe_driver);
 347         platform_device_unregister(dmic_codec_dev);
 348 }
 349 module_exit(omap_abe_exit);
 350
 351 MODULE_AUTHOR("Misael Lopez Cruz <misael.lopez@ti.com>");
 352 MODULE_DESCRIPTION("ALSA SoC for OMAP boards with ABE and twl6040 codec");
 353 MODULE_LICENSE("GPL");
 354 MODULE_ALIAS("platform:omap-abe-twl6040");