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