release/src-rt-6.x.4708/linux/linux-2.6.36/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 /*
  15  * WARNING:
  16  *
  17  * Because Analog Devices Inc. discontinued the ad1980 sound chip since
  18  * Sep. 2009, this ad1980 driver is not maintained, tested and supported
  19  * by ADI now.
  20  */
  21
  22 #include <linux/init.h>
  23 #include <linux/slab.h>
  24 #include <linux/module.h>
  25 #include <linux/kernel.h>
  26 #include <linux/device.h>
  27 #include <sound/core.h>
  28 #include <sound/pcm.h>
  29 #include <sound/ac97_codec.h>
  30 #include <sound/initval.h>
  31 #include <sound/soc.h>
  32 #include <sound/soc-dapm.h>
  33
  34 #include "ad1980.h"
  35
  36 static unsigned int ac97_read(struct snd_soc_codec *codec,
  37         unsigned int reg);
  38 static int ac97_write(struct snd_soc_codec *codec,
  39         unsigned int reg, unsigned int val);
  40
  41 /*
  42  * AD1980 register cache
  43  */
  44 static const u16 ad1980_reg[] = {
  45         0x0090, 0x8000, 0x8000, 0x8000, /* 0 - 6  */
  46         0x0000, 0x0000, 0x8008, 0x8008, /* 8 - e  */
  47         0x8808, 0x8808, 0x0000, 0x8808, /* 10 - 16 */
  48         0x8808, 0x0000, 0x8000, 0x0000, /* 18 - 1e */
  49         0x0000, 0x0000, 0x0000, 0x0000, /* 20 - 26 */
  50         0x03c7, 0x0000, 0xbb80, 0xbb80, /* 28 - 2e */
  51         0xbb80, 0xbb80, 0x0000, 0x8080, /* 30 - 36 */
  52         0x8080, 0x2000, 0x0000, 0x0000, /* 38 - 3e */
  53         0x0000, 0x0000, 0x0000, 0x0000, /* reserved */
  54         0x0000, 0x0000, 0x0000, 0x0000, /* reserved */
  55         0x0000, 0x0000, 0x0000, 0x0000, /* reserved */
  56         0x0000, 0x0000, 0x0000, 0x0000, /* reserved */
  57         0x8080, 0x0000, 0x0000, 0x0000, /* 60 - 66 */
  58         0x0000, 0x0000, 0x0000, 0x0000, /* reserved */
  59         0x0000, 0x0000, 0x1001, 0x0000, /* 70 - 76 */
  60         0x0000, 0x0000, 0x4144, 0x5370  /* 78 - 7e */
  61 };
  62
  63 static const char *ad1980_rec_sel[] = {"Mic", "CD", "NC", "AUX", "Line",
  64                 "Stereo Mix", "Mono Mix", "Phone"};
  65
  66 static const struct soc_enum ad1980_cap_src =
  67         SOC_ENUM_DOUBLE(AC97_REC_SEL, 8, 0, 7, ad1980_rec_sel);
  68
  69 static const struct snd_kcontrol_new ad1980_snd_ac97_controls[] = {
  70 SOC_DOUBLE("Master Playback Volume", AC97_MASTER, 8, 0, 31, 1),
  71 SOC_SINGLE("Master Playback Switch", AC97_MASTER, 15, 1, 1),
  72
  73 SOC_DOUBLE("Headphone Playback Volume", AC97_HEADPHONE, 8, 0, 31, 1),
  74 SOC_SINGLE("Headphone Playback Switch", AC97_HEADPHONE, 15, 1, 1),
  75
  76 SOC_DOUBLE("PCM Playback Volume", AC97_PCM, 8, 0, 31, 1),
  77 SOC_SINGLE("PCM Playback Switch", AC97_PCM, 15, 1, 1),
  78
  79 SOC_DOUBLE("PCM Capture Volume", AC97_REC_GAIN, 8, 0, 31, 0),
  80 SOC_SINGLE("PCM Capture Switch", AC97_REC_GAIN, 15, 1, 1),
  81
  82 SOC_SINGLE("Mono Playback Volume", AC97_MASTER_MONO, 0, 31, 1),
  83 SOC_SINGLE("Mono Playback Switch", AC97_MASTER_MONO, 15, 1, 1),
  84
  85 SOC_SINGLE("Phone Capture Volume", AC97_PHONE, 0, 31, 1),
  86 SOC_SINGLE("Phone Capture Switch", AC97_PHONE, 15, 1, 1),
  87
  88 SOC_SINGLE("Mic Volume", AC97_MIC, 0, 31, 1),
  89 SOC_SINGLE("Mic Switch", AC97_MIC, 15, 1, 1),
  90
  91 SOC_SINGLE("Stereo Mic Switch", AC97_AD_MISC, 6, 1, 0),
  92 SOC_DOUBLE("Line HP Swap Switch", AC97_AD_MISC, 10, 5, 1, 0),
  93
  94 SOC_DOUBLE("Surround Playback Volume", AC97_SURROUND_MASTER, 8, 0, 31, 1),
  95 SOC_DOUBLE("Surround Playback Switch", AC97_SURROUND_MASTER, 15, 7, 1, 1),
  96
  97 SOC_DOUBLE("Center/LFE Playback Volume", AC97_CENTER_LFE_MASTER, 8, 0, 31, 1),
  98 SOC_DOUBLE("Center/LFE Playback Switch", AC97_CENTER_LFE_MASTER, 15, 7, 1, 1),
  99
 100 SOC_ENUM("Capture Source", ad1980_cap_src),
 101
 102 SOC_SINGLE("Mic Boost Switch", AC97_MIC, 6, 1, 0),
 103 };
 104
 105 static unsigned int ac97_read(struct snd_soc_codec *codec,
 106         unsigned int reg)
 107 {
 108         u16 *cache = codec->reg_cache;
 109
 110         switch (reg) {
 111         case AC97_RESET:
 112         case AC97_INT_PAGING:
 113         case AC97_POWERDOWN:
 114         case AC97_EXTENDED_STATUS:
 115         case AC97_VENDOR_ID1:
 116         case AC97_VENDOR_ID2:
 117                 return soc_ac97_ops.read(codec->ac97, reg);
 118         default:
 119                 reg = reg >> 1;
 120
 121                 if (reg >= ARRAY_SIZE(ad1980_reg))
 122                         return -EINVAL;
 123
 124                 return cache[reg];
 125         }
 126 }
 127
 128 static int ac97_write(struct snd_soc_codec *codec, unsigned int reg,
 129         unsigned int val)
 130 {
 131         u16 *cache = codec->reg_cache;
 132
 133         soc_ac97_ops.write(codec->ac97, reg, val);
 134         reg = reg >> 1;
 135         if (reg < ARRAY_SIZE(ad1980_reg))
 136                 cache[reg] = val;
 137
 138         return 0;
 139 }
 140
 141 struct snd_soc_dai ad1980_dai = {
 142         .name = "AC97",
 143         .ac97_control = 1,
 144         .playback = {
 145                 .stream_name = "Playback",
 146                 .channels_min = 2,
 147                 .channels_max = 6,
 148                 .rates = SNDRV_PCM_RATE_48000,
 149                 .formats = SND_SOC_STD_AC97_FMTS, },
 150         .capture = {
 151                 .stream_name = "Capture",
 152                 .channels_min = 2,
 153                 .channels_max = 2,
 154                 .rates = SNDRV_PCM_RATE_48000,
 155                 .formats = SND_SOC_STD_AC97_FMTS, },
 156 };
 157 EXPORT_SYMBOL_GPL(ad1980_dai);
 158
 159 static int ad1980_reset(struct snd_soc_codec *codec, int try_warm)
 160 {
 161         u16 retry_cnt = 0;
 162
 163 retry:
 164         if (try_warm && soc_ac97_ops.warm_reset) {
 165                 soc_ac97_ops.warm_reset(codec->ac97);
 166                 if (ac97_read(codec, AC97_RESET) == 0x0090)
 167                         return 1;
 168         }
 169
 170         soc_ac97_ops.reset(codec->ac97);
 171         /* Set bit 16slot in register 74h, then every slot will has only 16
 172          * bits. This command is sent out in 20bit mode, in which case the
 173          * first nibble of data is eaten by the addr. (Tag is always 16 bit)*/
 174         ac97_write(codec, AC97_AD_SERIAL_CFG, 0x9900);
 175
 176         if (ac97_read(codec, AC97_RESET)  != 0x0090)
 177                 goto err;
 178         return 0;
 179
 180 err:
 181         while (retry_cnt++ < 10)
 182                 goto retry;
 183
 184         printk(KERN_ERR "AD1980 AC97 reset failed\n");
 185         return -EIO;
 186 }
 187
 188 static int ad1980_soc_probe(struct platform_device *pdev)
 189 {
 190         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
 191         struct snd_soc_codec *codec;
 192         int ret = 0;
 193         u16 vendor_id2;
 194         u16 ext_status;
 195
 196         printk(KERN_INFO "AD1980 SoC Audio Codec\n");
 197
 198         socdev->card->codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
 199         if (socdev->card->codec == NULL)
 200                 return -ENOMEM;
 201         codec = socdev->card->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 "Failed to reset AD1980: 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         /* unmute captures and playbacks volume */
 257         ac97_write(codec, AC97_MASTER, 0x0000);
 258         ac97_write(codec, AC97_PCM, 0x0000);
 259         ac97_write(codec, AC97_REC_GAIN, 0x0000);
 260         ac97_write(codec, AC97_CENTER_LFE_MASTER, 0x0000);
 261         ac97_write(codec, AC97_SURROUND_MASTER, 0x0000);
 262
 263         /*power on LFE/CENTER/Surround DACs*/
 264         ext_status = ac97_read(codec, AC97_EXTENDED_STATUS);
 265         ac97_write(codec, AC97_EXTENDED_STATUS, ext_status&~0x3800);
 266
 267         snd_soc_add_controls(codec, ad1980_snd_ac97_controls,
 268                                 ARRAY_SIZE(ad1980_snd_ac97_controls));
 269
 270         return 0;
 271
 272 reset_err:
 273         snd_soc_free_pcms(socdev);
 274
 275 pcm_err:
 276         snd_soc_free_ac97_codec(codec);
 277
 278 codec_err:
 279         kfree(codec->reg_cache);
 280
 281 cache_err:
 282         kfree(socdev->card->codec);
 283         socdev->card->codec = NULL;
 284         return ret;
 285 }
 286
 287 static int ad1980_soc_remove(struct platform_device *pdev)
 288 {
 289         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
 290         struct snd_soc_codec *codec = socdev->card->codec;
 291
 292         if (codec == NULL)
 293                 return 0;
 294
 295         snd_soc_dapm_free(socdev);
 296         snd_soc_free_pcms(socdev);
 297         snd_soc_free_ac97_codec(codec);
 298         kfree(codec->reg_cache);
 299         kfree(codec);
 300         return 0;
 301 }
 302
 303 struct snd_soc_codec_device soc_codec_dev_ad1980 = {
 304         .probe =        ad1980_soc_probe,
 305         .remove =       ad1980_soc_remove,
 306 };
 307 EXPORT_SYMBOL_GPL(soc_codec_dev_ad1980);
 308
 309 MODULE_DESCRIPTION("ASoC ad1980 driver (Obsolete)");
 310 MODULE_AUTHOR("Roy Huang, Cliff Cai");
 311 MODULE_LICENSE("GPL");