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_DOUBLE("Center/LFE Playback Volume", AC97_CENTER_LFE_MASTER, 8, 0, 31, 1),
  89 SOC_DOUBLE("Center/LFE Playback Switch", AC97_CENTER_LFE_MASTER, 15, 7, 1, 1),
  90
  91 SOC_ENUM("Capture Source", ad1980_cap_src),
  92
  93 SOC_SINGLE("Mic Boost Switch", AC97_MIC, 6, 1, 0),
  94 };
  95
  96 static unsigned int ac97_read(struct snd_soc_codec *codec,
  97         unsigned int reg)
  98 {
  99         u16 *cache = codec->reg_cache;
 100
 101         switch (reg) {
 102         case AC97_RESET:
 103         case AC97_INT_PAGING:
 104         case AC97_POWERDOWN:
 105         case AC97_EXTENDED_STATUS:
 106         case AC97_VENDOR_ID1:
 107         case AC97_VENDOR_ID2:
 108                 return soc_ac97_ops.read(codec->ac97, reg);
 109         default:
 110                 reg = reg >> 1;
 111
 112                 if (reg >= ARRAY_SIZE(ad1980_reg))
 113                         return -EINVAL;
 114
 115                 return cache[reg];
 116         }
 117 }
 118
 119 static int ac97_write(struct snd_soc_codec *codec, unsigned int reg,
 120         unsigned int val)
 121 {
 122         u16 *cache = codec->reg_cache;
 123
 124         soc_ac97_ops.write(codec->ac97, reg, val);
 125         reg = reg >> 1;
 126         if (reg < ARRAY_SIZE(ad1980_reg))
 127                 cache[reg] = val;
 128
 129         return 0;
 130 }
 131
 132 struct snd_soc_dai ad1980_dai = {
 133         .name = "AC97",
 134         .ac97_control = 1,
 135         .playback = {
 136                 .stream_name = "Playback",
 137                 .channels_min = 2,
 138                 .channels_max = 6,
 139                 .rates = SNDRV_PCM_RATE_48000,
 140                 .formats = SND_SOC_STD_AC97_FMTS, },
 141         .capture = {
 142                 .stream_name = "Capture",
 143                 .channels_min = 2,
 144                 .channels_max = 2,
 145                 .rates = SNDRV_PCM_RATE_48000,
 146                 .formats = SND_SOC_STD_AC97_FMTS, },
 147 };
 148 EXPORT_SYMBOL_GPL(ad1980_dai);
 149
 150 static int ad1980_reset(struct snd_soc_codec *codec, int try_warm)
 151 {
 152         u16 retry_cnt = 0;
 153
 154 retry:
 155         if (try_warm && soc_ac97_ops.warm_reset) {
 156                 soc_ac97_ops.warm_reset(codec->ac97);
 157                 if (ac97_read(codec, AC97_RESET) == 0x0090)
 158                         return 1;
 159         }
 160
 161         soc_ac97_ops.reset(codec->ac97);
 162         /* Set bit 16slot in register 74h, then every slot will has only 16
 163          * bits. This command is sent out in 20bit mode, in which case the
 164          * first nibble of data is eaten by the addr. (Tag is always 16 bit)*/
 165         ac97_write(codec, AC97_AD_SERIAL_CFG, 0x9900);
 166
 167         if (ac97_read(codec, AC97_RESET)  != 0x0090)
 168                 goto err;
 169         return 0;
 170
 171 err:
 172         while (retry_cnt++ < 10)
 173                 goto retry;
 174
 175         printk(KERN_ERR "AD1980 AC97 reset failed\n");
 176         return -EIO;
 177 }
 178
 179 static int ad1980_soc_probe(struct platform_device *pdev)
 180 {
 181         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
 182         struct snd_soc_codec *codec;
 183         int ret = 0;
 184         u16 vendor_id2;
 185         u16 ext_status;
 186
 187         printk(KERN_INFO "AD1980 SoC Audio Codec\n");
 188
 189         socdev->card->codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
 190         if (socdev->card->codec == NULL)
 191                 return -ENOMEM;
 192         codec = socdev->card->codec;
 193         mutex_init(&codec->mutex);
 194
 195         codec->reg_cache =
 196                 kzalloc(sizeof(u16) * ARRAY_SIZE(ad1980_reg), GFP_KERNEL);
 197         if (codec->reg_cache == NULL) {
 198                 ret = -ENOMEM;
 199                 goto cache_err;
 200         }
 201         memcpy(codec->reg_cache, ad1980_reg, sizeof(u16) * \
 202                         ARRAY_SIZE(ad1980_reg));
 203         codec->reg_cache_size = sizeof(u16) * ARRAY_SIZE(ad1980_reg);
 204         codec->reg_cache_step = 2;
 205         codec->name = "AD1980";
 206         codec->owner = THIS_MODULE;
 207         codec->dai = &ad1980_dai;
 208         codec->num_dai = 1;
 209         codec->write = ac97_write;
 210         codec->read = ac97_read;
 211         INIT_LIST_HEAD(&codec->dapm_widgets);
 212         INIT_LIST_HEAD(&codec->dapm_paths);
 213
 214         ret = snd_soc_new_ac97_codec(codec, &soc_ac97_ops, 0);
 215         if (ret < 0) {
 216                 printk(KERN_ERR "ad1980: failed to register AC97 codec\n");
 217                 goto codec_err;
 218         }
 219
 220         /* register pcms */
 221         ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
 222         if (ret < 0)
 223                 goto pcm_err;
 224
 225
 226         ret = ad1980_reset(codec, 0);
 227         if (ret < 0) {
 228                 printk(KERN_ERR "Failed to reset AD1980: AC97 link error\n");
 229                 goto reset_err;
 230         }
 231
 232         /* Read out vendor ID to make sure it is ad1980 */
 233         if (ac97_read(codec, AC97_VENDOR_ID1) != 0x4144)
 234                 goto reset_err;
 235
 236         vendor_id2 = ac97_read(codec, AC97_VENDOR_ID2);
 237
 238         if (vendor_id2 != 0x5370) {
 239                 if (vendor_id2 != 0x5374)
 240                         goto reset_err;
 241                 else
 242                         printk(KERN_WARNING "ad1980: "
 243                                 "Found AD1981 - only 2/2 IN/OUT Channels "
 244                                 "supported\n");
 245         }
 246
 247         /* unmute captures and playbacks volume */
 248         ac97_write(codec, AC97_MASTER, 0x0000);
 249         ac97_write(codec, AC97_PCM, 0x0000);
 250         ac97_write(codec, AC97_REC_GAIN, 0x0000);
 251         ac97_write(codec, AC97_CENTER_LFE_MASTER, 0x0000);
 252         ac97_write(codec, AC97_SURROUND_MASTER, 0x0000);
 253
 254         /*power on LFE/CENTER/Surround DACs*/
 255         ext_status = ac97_read(codec, AC97_EXTENDED_STATUS);
 256         ac97_write(codec, AC97_EXTENDED_STATUS, ext_status&~0x3800);
 257
 258         snd_soc_add_controls(codec, ad1980_snd_ac97_controls,
 259                                 ARRAY_SIZE(ad1980_snd_ac97_controls));
 260
 261         return 0;
 262
 263 reset_err:
 264         snd_soc_free_pcms(socdev);
 265
 266 pcm_err:
 267         snd_soc_free_ac97_codec(codec);
 268
 269 codec_err:
 270         kfree(codec->reg_cache);
 271
 272 cache_err:
 273         kfree(socdev->card->codec);
 274         socdev->card->codec = NULL;
 275         return ret;
 276 }
 277
 278 static int ad1980_soc_remove(struct platform_device *pdev)
 279 {
 280         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
 281         struct snd_soc_codec *codec = socdev->card->codec;
 282
 283         if (codec == NULL)
 284                 return 0;
 285
 286         snd_soc_dapm_free(socdev);
 287         snd_soc_free_pcms(socdev);
 288         snd_soc_free_ac97_codec(codec);
 289         kfree(codec->reg_cache);
 290         kfree(codec);
 291         return 0;
 292 }
 293
 294 struct snd_soc_codec_device soc_codec_dev_ad1980 = {
 295         .probe =        ad1980_soc_probe,
 296         .remove =       ad1980_soc_remove,
 297 };
 298 EXPORT_SYMBOL_GPL(soc_codec_dev_ad1980);
 299
 300 MODULE_DESCRIPTION("ASoC ad1980 driver");
 301 MODULE_AUTHOR("Roy Huang, Cliff Cai");
 302 MODULE_LICENSE("GPL");