sound/soc/codecs/ad1980.c

   1 /*
   2  * ad1980.c  --  ALSA Soc AD1980 codec support
   3  *
   4  * Copyright:   Analog Device Inc.
   5  * Author:      Roy Huang <roy.huang@analog.com>
   6  *              Cliff Cai <cliff.cai@analog.com>
   7  *
   8  *  This program is free software; you can redistribute  it and/or modify it
   9  *  under  the terms of  the GNU General  Public License as published by the
  10  *  Free Software Foundation;  either version 2 of the  License, or (at your
  11  *  option) any later version.
  12  */
  13
  14 #include <linux/init.h>
  15 #include <linux/module.h>
  16 #include <linux/kernel.h>
  17 #include <linux/device.h>
  18 #include <sound/core.h>
  19 #include <sound/pcm.h>
  20 #include <sound/ac97_codec.h>
  21 #include <sound/initval.h>
  22 #include <sound/soc.h>
  23 #include <sound/soc-dapm.h>
  24
  25 #include "ad1980.h"
  26
  27 static unsigned int ac97_read(struct snd_soc_codec *codec,
  28         unsigned int reg);
  29 static int ac97_write(struct snd_soc_codec *codec,
  30         unsigned int reg, unsigned int val);
  31
  32 /*
  33  * AD1980 register cache
  34  */
  35 static const u16 ad1980_reg[] = {
  36         0x0090, 0x8000, 0x8000, 0x8000, /* 0 - 6  */
  37         0x0000, 0x0000, 0x8008, 0x8008, /* 8 - e  */
  38         0x8808, 0x8808, 0x0000, 0x8808, /* 10 - 16 */
  39         0x8808, 0x0000, 0x8000, 0x0000, /* 18 - 1e */
  40         0x0000, 0x0000, 0x0000, 0x0000, /* 20 - 26 */
  41         0x03c7, 0x0000, 0xbb80, 0xbb80, /* 28 - 2e */
  42         0xbb80, 0xbb80, 0x0000, 0x8080, /* 30 - 36 */
  43         0x8080, 0x2000, 0x0000, 0x0000, /* 38 - 3e */
  44         0x0000, 0x0000, 0x0000, 0x0000, /* reserved */
  45         0x0000, 0x0000, 0x0000, 0x0000, /* reserved */
  46         0x0000, 0x0000, 0x0000, 0x0000, /* reserved */
  47         0x0000, 0x0000, 0x0000, 0x0000, /* reserved */
  48         0x8080, 0x0000, 0x0000, 0x0000, /* 60 - 66 */
  49         0x0000, 0x0000, 0x0000, 0x0000, /* reserved */
  50         0x0000, 0x0000, 0x1001, 0x0000, /* 70 - 76 */
  51         0x0000, 0x0000, 0x4144, 0x5370  /* 78 - 7e */
  52 };
  53
  54 static const char *ad1980_rec_sel[] = {"Mic", "CD", "NC", "AUX", "Line",
  55                 "Stereo Mix", "Mono Mix", "Phone"};
  56
  57 static const struct soc_enum ad1980_cap_src =
  58         SOC_ENUM_DOUBLE(AC97_REC_SEL, 8, 0, 7, ad1980_rec_sel);
  59
  60 static const struct snd_kcontrol_new ad1980_snd_ac97_controls[] = {
  61 SOC_DOUBLE("Master Playback Volume", AC97_MASTER, 8, 0, 31, 1),
  62 SOC_SINGLE("Master Playback Switch", AC97_MASTER, 15, 1, 1),
  63
  64 SOC_DOUBLE("Headphone Playback Volume", AC97_HEADPHONE, 8, 0, 31, 1),
  65 SOC_SINGLE("Headphone Playback Switch", AC97_HEADPHONE, 15, 1, 1),
  66
  67 SOC_DOUBLE("PCM Playback Volume", AC97_PCM, 8, 0, 31, 1),
  68 SOC_SINGLE("PCM Playback Switch", AC97_PCM, 15, 1, 1),
  69
  70 SOC_DOUBLE("PCM Capture Volume", AC97_REC_GAIN, 8, 0, 31, 0),
  71 SOC_SINGLE("PCM Capture Switch", AC97_REC_GAIN, 15, 1, 1),
  72
  73 SOC_SINGLE("Mono Playback Volume", AC97_MASTER_MONO, 0, 31, 1),
  74 SOC_SINGLE("Mono Playback Switch", AC97_MASTER_MONO, 15, 1, 1),
  75
  76 SOC_SINGLE("Phone Capture Volume", AC97_PHONE, 0, 31, 1),
  77 SOC_SINGLE("Phone Capture Switch", AC97_PHONE, 15, 1, 1),
  78
  79 SOC_SINGLE("Mic Volume", AC97_MIC, 0, 31, 1),
  80 SOC_SINGLE("Mic Switch", AC97_MIC, 15, 1, 1),
  81
  82 SOC_SINGLE("Stereo Mic Switch", AC97_AD_MISC, 6, 1, 0),
  83 SOC_DOUBLE("Line HP Swap Switch", AC97_AD_MISC, 10, 5, 1, 0),
  84
  85 SOC_DOUBLE("Surround Playback Volume", AC97_SURROUND_MASTER, 8, 0, 31, 1),
  86 SOC_DOUBLE("Surround Playback Switch", AC97_SURROUND_MASTER, 15, 7, 1, 1),
  87
  88 SOC_ENUM("Capture Source", ad1980_cap_src),
  89
  90 SOC_SINGLE("Mic Boost Switch", AC97_MIC, 6, 1, 0),
  91 };
  92
  93 /* add non dapm controls */
  94 static int ad1980_add_controls(struct snd_soc_codec *codec)
  95 {
  96         int err, i;
  97
  98         for (i = 0; i < ARRAY_SIZE(ad1980_snd_ac97_controls); i++) {
  99                 err = snd_ctl_add(codec->card, snd_soc_cnew(
 100                                 &ad1980_snd_ac97_controls[i], codec, NULL));
 101                 if (err < 0)
 102                         return err;
 103         }
 104         return 0;
 105 }
 106
 107 static unsigned int ac97_read(struct snd_soc_codec *codec,
 108         unsigned int reg)
 109 {
 110         u16 *cache = codec->reg_cache;
 111
 112         switch (reg) {
 113         case AC97_RESET:
 114         case AC97_INT_PAGING:
 115         case AC97_POWERDOWN:
 116         case AC97_EXTENDED_STATUS:
 117         case AC97_VENDOR_ID1:
 118         case AC97_VENDOR_ID2:
 119                 return soc_ac97_ops.read(codec->ac97, reg);
 120         default:
 121                 reg = reg >> 1;
 122
 123                 if (reg >= (ARRAY_SIZE(ad1980_reg)))
 124                         return -EINVAL;
 125
 126                 return cache[reg];
 127         }
 128 }
 129
 130 static int ac97_write(struct snd_soc_codec *codec, unsigned int reg,
 131         unsigned int val)
 132 {
 133         u16 *cache = codec->reg_cache;
 134
 135         soc_ac97_ops.write(codec->ac97, reg, val);
 136         reg = reg >> 1;
 137         if (reg < (ARRAY_SIZE(ad1980_reg)))
 138                 cache[reg] = val;
 139
 140         return 0;
 141 }
 142
 143 struct snd_soc_dai ad1980_dai = {
 144         .name = "AC97",
 145         .playback = {
 146                 .stream_name = "Playback",
 147                 .channels_min = 2,
 148                 .channels_max = 2,
 149                 .rates = SNDRV_PCM_RATE_48000,
 150                 .formats = SNDRV_PCM_FMTBIT_S16_LE, },
 151         .capture = {
 152                 .stream_name = "Capture",
 153                 .channels_min = 2,
 154                 .channels_max = 2,
 155                 .rates = SNDRV_PCM_RATE_48000,
 156                 .formats = SNDRV_PCM_FMTBIT_S16_LE, },
 157 };
 158 EXPORT_SYMBOL_GPL(ad1980_dai);
 159
 160 static int ad1980_reset(struct snd_soc_codec *codec, int try_warm)
 161 {
 162         u16 retry_cnt = 0;
 163
 164 retry:
 165         if (try_warm && soc_ac97_ops.warm_reset) {
 166                 soc_ac97_ops.warm_reset(codec->ac97);
 167                 if (ac97_read(codec, AC97_RESET) == 0x0090)
 168                         return 1;
 169         }
 170
 171         soc_ac97_ops.reset(codec->ac97);
 172         /* Set bit 16slot in register 74h, then every slot will has only 16
 173          * bits. This command is sent out in 20bit mode, in which case the
 174          * first nibble of data is eaten by the addr. (Tag is always 16 bit)*/
 175         ac97_write(codec, AC97_AD_SERIAL_CFG, 0x9900);
 176
 177         if (ac97_read(codec, AC97_RESET)  != 0x0090)
 178                 goto err;
 179         return 0;
 180
 181 err:
 182         while (retry_cnt++ < 10)
 183                 goto retry;
 184
 185         printk(KERN_ERR "AD1980 AC97 reset failed\n");
 186         return -EIO;
 187 }
 188
 189 static int ad1980_soc_probe(struct platform_device *pdev)
 190 {
 191         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
 192         struct snd_soc_codec *codec;
 193         int ret = 0;
 194         u16 vendor_id2;
 195
 196         printk(KERN_INFO "AD1980 SoC Audio Codec\n");
 197
 198         socdev->codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
 199         if (socdev->codec == NULL)
 200                 return -ENOMEM;
 201         codec = socdev->codec;
 202         mutex_init(&codec->mutex);
 203
 204         codec->reg_cache =
 205                 kzalloc(sizeof(u16) * ARRAY_SIZE(ad1980_reg), GFP_KERNEL);
 206         if (codec->reg_cache == NULL) {
 207                 ret = -ENOMEM;
 208                 goto cache_err;
 209         }
 210         memcpy(codec->reg_cache, ad1980_reg, sizeof(u16) * \
 211                         ARRAY_SIZE(ad1980_reg));
 212         codec->reg_cache_size = sizeof(u16) * ARRAY_SIZE(ad1980_reg);
 213         codec->reg_cache_step = 2;
 214         codec->name = "AD1980";
 215         codec->owner = THIS_MODULE;
 216         codec->dai = &ad1980_dai;
 217         codec->num_dai = 1;
 218         codec->write = ac97_write;
 219         codec->read = ac97_read;
 220         INIT_LIST_HEAD(&codec->dapm_widgets);
 221         INIT_LIST_HEAD(&codec->dapm_paths);
 222
 223         ret = snd_soc_new_ac97_codec(codec, &soc_ac97_ops, 0);
 224         if (ret < 0) {
 225                 printk(KERN_ERR "ad1980: failed to register AC97 codec\n");
 226                 goto codec_err;
 227         }
 228
 229         /* register pcms */
 230         ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
 231         if (ret < 0)
 232                 goto pcm_err;
 233
 234
 235         ret = ad1980_reset(codec, 0);
 236         if (ret < 0) {
 237                 printk(KERN_ERR "AC97 link error\n");
 238                 goto reset_err;
 239         }
 240
 241         /* Read out vendor ID to make sure it is ad1980 */
 242         if (ac97_read(codec, AC97_VENDOR_ID1) != 0x4144)
 243                 goto reset_err;
 244
 245         vendor_id2 = ac97_read(codec, AC97_VENDOR_ID2);
 246
 247         if (vendor_id2 != 0x5370) {
 248                 if (vendor_id2 != 0x5374)
 249                         goto reset_err;
 250                 else
 251                         printk(KERN_WARNING "ad1980: "
 252                                 "Found AD1981 - only 2/2 IN/OUT Channels "
 253                                 "supported\n");
 254         }
 255
 256         ac97_write(codec, AC97_MASTER, 0x0000); /* unmute line out volume */
 257         ac97_write(codec, AC97_PCM, 0x0000);    /* unmute PCM out volume */
 258         ac97_write(codec, AC97_REC_GAIN, 0x0000);/* unmute record volume */
 259
 260         ad1980_add_controls(codec);
 261         ret = snd_soc_register_card(socdev);
 262         if (ret < 0) {
 263                 printk(KERN_ERR "ad1980: failed to register card\n");
 264                 goto reset_err;
 265         }
 266
 267         return 0;
 268
 269 reset_err:
 270         snd_soc_free_pcms(socdev);
 271
 272 pcm_err:
 273         snd_soc_free_ac97_codec(codec);
 274
 275 codec_err:
 276         kfree(codec->reg_cache);
 277
 278 cache_err:
 279         kfree(socdev->codec);
 280         socdev->codec = NULL;
 281         return ret;
 282 }
 283
 284 static int ad1980_soc_remove(struct platform_device *pdev)
 285 {
 286         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
 287         struct snd_soc_codec *codec = socdev->codec;
 288
 289         if (codec == NULL)
 290                 return 0;
 291
 292         snd_soc_dapm_free(socdev);
 293         snd_soc_free_pcms(socdev);
 294         snd_soc_free_ac97_codec(codec);
 295         kfree(codec->reg_cache);
 296         kfree(codec);
 297         return 0;
 298 }
 299
 300 struct snd_soc_codec_device soc_codec_dev_ad1980 = {
 301         .probe =        ad1980_soc_probe,
 302         .remove =       ad1980_soc_remove,
 303 };
 304 EXPORT_SYMBOL_GPL(soc_codec_dev_ad1980);
 305
 306 MODULE_DESCRIPTION("ASoC ad1980 driver");
 307 MODULE_AUTHOR("Roy Huang, Cliff Cai");
 308 MODULE_LICENSE("GPL");