linux/sound/soc/omap/omap-abe-twl6040.c
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   1/*
   2 * omap-abe-twl6040.c  --  SoC audio for TI OMAP based boards with ABE and
   3 *                         twl6040 codec
   4 *
   5 * Author: Misael Lopez Cruz <misael.lopez@ti.com>
   6 *
   7 * This program is free software; you can redistribute it and/or
   8 * modify it under the terms of the GNU General Public License
   9 * version 2 as published by the Free Software Foundation.
  10 *
  11 * This program is distributed in the hope that it will be useful, but
  12 * WITHOUT ANY WARRANTY; without even the implied warranty of
  13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14 * General Public License for more details.
  15 *
  16 * You should have received a copy of the GNU General Public License
  17 * along with this program; if not, write to the Free Software
  18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
  19 * 02110-1301 USA
  20 *
  21 */
  22
  23#include <linux/clk.h>
  24#include <linux/platform_device.h>
  25#include <linux/mfd/twl6040.h>
  26#include <linux/module.h>
  27#include <linux/of.h>
  28
  29#include <sound/core.h>
  30#include <sound/pcm.h>
  31#include <sound/soc.h>
  32#include <sound/jack.h>
  33
  34#include "omap-dmic.h"
  35#include "omap-mcpdm.h"
  36#include "../codecs/twl6040.h"
  37
  38struct abe_twl6040 {
  39        int     jack_detection; /* board can detect jack events */
  40        int     mclk_freq;      /* MCLK frequency speed for twl6040 */
  41
  42        struct platform_device *dmic_codec_dev;
  43};
  44
  45static 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 = substream->private_data;
  49        struct snd_soc_dai *codec_dai = rtd->codec_dai;
  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(rtd->codec);
  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
  73static struct snd_soc_ops omap_abe_ops = {
  74        .hw_params = omap_abe_hw_params,
  75};
  76
  77static 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 = substream->private_data;
  81        struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
  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
  99static struct snd_soc_ops omap_abe_dmic_ops = {
 100        .hw_params = omap_abe_dmic_hw_params,
 101};
 102
 103/* Headset jack */
 104static struct snd_soc_jack hs_jack;
 105
 106/*Headset jack detection DAPM pins */
 107static 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 */
 119static 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
 137static 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
 167static int omap_abe_twl6040_init(struct snd_soc_pcm_runtime *rtd)
 168{
 169        struct snd_soc_codec *codec = rtd->codec;
 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 = 0;
 174
 175        /*
 176         * Configure McPDM offset cancellation based on the HSOTRIM value from
 177         * twl6040.
 178         */
 179        hs_trim = twl6040_get_trim_value(codec, 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_jack_new(codec, "Headset Jack",
 186                                        SND_JACK_HEADSET, &hs_jack);
 187                if (ret)
 188                        return ret;
 189
 190                ret = snd_soc_jack_add_pins(&hs_jack, ARRAY_SIZE(hs_jack_pins),
 191                                        hs_jack_pins);
 192                twl6040_hs_jack_detect(codec, &hs_jack, SND_JACK_HEADSET);
 193        }
 194
 195        return ret;
 196}
 197
 198static const struct snd_soc_dapm_route dmic_audio_map[] = {
 199        {"DMic", NULL, "Digital Mic"},
 200        {"Digital Mic", NULL, "Digital Mic1 Bias"},
 201};
 202
 203static 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/* Digital audio interface glue - connects codec <--> CPU */
 212static struct snd_soc_dai_link abe_twl6040_dai_links[] = {
 213        {
 214                .name = "TWL6040",
 215                .stream_name = "TWL6040",
 216                .codec_dai_name = "twl6040-legacy",
 217                .codec_name = "twl6040-codec",
 218                .init = omap_abe_twl6040_init,
 219                .ops = &omap_abe_ops,
 220        },
 221        {
 222                .name = "DMIC",
 223                .stream_name = "DMIC Capture",
 224                .codec_dai_name = "dmic-hifi",
 225                .codec_name = "dmic-codec",
 226                .init = omap_abe_dmic_init,
 227                .ops = &omap_abe_dmic_ops,
 228        },
 229};
 230
 231/* Audio machine driver */
 232static struct snd_soc_card omap_abe_card = {
 233        .owner = THIS_MODULE,
 234
 235        .dapm_widgets = twl6040_dapm_widgets,
 236        .num_dapm_widgets = ARRAY_SIZE(twl6040_dapm_widgets),
 237        .dapm_routes = audio_map,
 238        .num_dapm_routes = ARRAY_SIZE(audio_map),
 239};
 240
 241static int omap_abe_probe(struct platform_device *pdev)
 242{
 243        struct device_node *node = pdev->dev.of_node;
 244        struct snd_soc_card *card = &omap_abe_card;
 245        struct device_node *dai_node;
 246        struct abe_twl6040 *priv;
 247        int num_links = 0;
 248        int ret = 0;
 249
 250        if (!node) {
 251                dev_err(&pdev->dev, "of node is missing.\n");
 252                return -ENODEV;
 253        }
 254
 255        card->dev = &pdev->dev;
 256
 257        priv = devm_kzalloc(&pdev->dev, sizeof(struct abe_twl6040), GFP_KERNEL);
 258        if (priv == NULL)
 259                return -ENOMEM;
 260
 261        priv->dmic_codec_dev = ERR_PTR(-EINVAL);
 262
 263        if (snd_soc_of_parse_card_name(card, "ti,model")) {
 264                dev_err(&pdev->dev, "Card name is not provided\n");
 265                return -ENODEV;
 266        }
 267
 268        ret = snd_soc_of_parse_audio_routing(card, "ti,audio-routing");
 269        if (ret) {
 270                dev_err(&pdev->dev, "Error while parsing DAPM routing\n");
 271                return ret;
 272        }
 273
 274        dai_node = of_parse_phandle(node, "ti,mcpdm", 0);
 275        if (!dai_node) {
 276                dev_err(&pdev->dev, "McPDM node is not provided\n");
 277                return -EINVAL;
 278        }
 279        abe_twl6040_dai_links[0].cpu_of_node = dai_node;
 280        abe_twl6040_dai_links[0].platform_of_node = dai_node;
 281
 282        dai_node = of_parse_phandle(node, "ti,dmic", 0);
 283        if (dai_node) {
 284                num_links = 2;
 285                abe_twl6040_dai_links[1].cpu_of_node = dai_node;
 286                abe_twl6040_dai_links[1].platform_of_node = dai_node;
 287
 288                priv->dmic_codec_dev = platform_device_register_simple(
 289                                                "dmic-codec", -1, NULL, 0);
 290                if (IS_ERR(priv->dmic_codec_dev)) {
 291                        dev_err(&pdev->dev, "Can't instantiate dmic-codec\n");
 292                        return PTR_ERR(priv->dmic_codec_dev);
 293                }
 294        } else {
 295                num_links = 1;
 296        }
 297
 298        priv->jack_detection = of_property_read_bool(node, "ti,jack-detection");
 299        of_property_read_u32(node, "ti,mclk-freq", &priv->mclk_freq);
 300        if (!priv->mclk_freq) {
 301                dev_err(&pdev->dev, "MCLK frequency not provided\n");
 302                ret = -EINVAL;
 303                goto err_unregister;
 304        }
 305
 306        card->fully_routed = 1;
 307
 308        if (!priv->mclk_freq) {
 309                dev_err(&pdev->dev, "MCLK frequency missing\n");
 310                ret = -ENODEV;
 311                goto err_unregister;
 312        }
 313
 314        card->dai_link = abe_twl6040_dai_links;
 315        card->num_links = num_links;
 316
 317        snd_soc_card_set_drvdata(card, priv);
 318
 319        ret = snd_soc_register_card(card);
 320        if (ret) {
 321                dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
 322                        ret);
 323                goto err_unregister;
 324        }
 325
 326        return 0;
 327
 328err_unregister:
 329        if (!IS_ERR(priv->dmic_codec_dev))
 330                platform_device_unregister(priv->dmic_codec_dev);
 331
 332        return ret;
 333}
 334
 335static int omap_abe_remove(struct platform_device *pdev)
 336{
 337        struct snd_soc_card *card = platform_get_drvdata(pdev);
 338        struct abe_twl6040 *priv = snd_soc_card_get_drvdata(card);
 339
 340        snd_soc_unregister_card(card);
 341
 342        if (!IS_ERR(priv->dmic_codec_dev))
 343                platform_device_unregister(priv->dmic_codec_dev);
 344
 345        return 0;
 346}
 347
 348static const struct of_device_id omap_abe_of_match[] = {
 349        {.compatible = "ti,abe-twl6040", },
 350        { },
 351};
 352MODULE_DEVICE_TABLE(of, omap_abe_of_match);
 353
 354static struct platform_driver omap_abe_driver = {
 355        .driver = {
 356                .name = "omap-abe-twl6040",
 357                .owner = THIS_MODULE,
 358                .pm = &snd_soc_pm_ops,
 359                .of_match_table = omap_abe_of_match,
 360        },
 361        .probe = omap_abe_probe,
 362        .remove = omap_abe_remove,
 363};
 364
 365module_platform_driver(omap_abe_driver);
 366
 367MODULE_AUTHOR("Misael Lopez Cruz <misael.lopez@ti.com>");
 368MODULE_DESCRIPTION("ALSA SoC for OMAP boards with ABE and twl6040 codec");
 369MODULE_LICENSE("GPL");
 370MODULE_ALIAS("platform:omap-abe-twl6040");
 371