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 /*
  37  * AD1980 register cache
  38  */
  39 static const u16 ad1980_reg[] = {
  40         0x0090, 0x8000, 0x8000, 0x8000, /* 0 - 6  */
  41         0x0000, 0x0000, 0x8008, 0x8008, /* 8 - e  */
  42         0x8808, 0x8808, 0x0000, 0x8808, /* 10 - 16 */
  43         0x8808, 0x0000, 0x8000, 0x0000, /* 18 - 1e */
  44         0x0000, 0x0000, 0x0000, 0x0000, /* 20 - 26 */
  45         0x03c7, 0x0000, 0xbb80, 0xbb80, /* 28 - 2e */
  46         0xbb80, 0xbb80, 0x0000, 0x8080, /* 30 - 36 */
  47         0x8080, 0x2000, 0x0000, 0x0000, /* 38 - 3e */
  48         0x0000, 0x0000, 0x0000, 0x0000, /* reserved */
  49         0x0000, 0x0000, 0x0000, 0x0000, /* reserved */
  50         0x0000, 0x0000, 0x0000, 0x0000, /* reserved */
  51         0x0000, 0x0000, 0x0000, 0x0000, /* reserved */
  52         0x8080, 0x0000, 0x0000, 0x0000, /* 60 - 66 */
  53         0x0000, 0x0000, 0x0000, 0x0000, /* reserved */
  54         0x0000, 0x0000, 0x1001, 0x0000, /* 70 - 76 */
  55         0x0000, 0x0000, 0x4144, 0x5370  /* 78 - 7e */
  56 };
  57
  58 static const char *ad1980_rec_sel[] = {"Mic", "CD", "NC", "AUX", "Line",
  59                 "Stereo Mix", "Mono Mix", "Phone"};
  60
  61 static const struct soc_enum ad1980_cap_src =
  62         SOC_ENUM_DOUBLE(AC97_REC_SEL, 8, 0, 7, ad1980_rec_sel);
  63
  64 static const struct snd_kcontrol_new ad1980_snd_ac97_controls[] = {
  65 SOC_DOUBLE("Master Playback Volume", AC97_MASTER, 8, 0, 31, 1),
  66 SOC_SINGLE("Master Playback Switch", AC97_MASTER, 15, 1, 1),
  67
  68 SOC_DOUBLE("Headphone Playback Volume", AC97_HEADPHONE, 8, 0, 31, 1),
  69 SOC_SINGLE("Headphone Playback Switch", AC97_HEADPHONE, 15, 1, 1),
  70
  71 SOC_DOUBLE("PCM Playback Volume", AC97_PCM, 8, 0, 31, 1),
  72 SOC_SINGLE("PCM Playback Switch", AC97_PCM, 15, 1, 1),
  73
  74 SOC_DOUBLE("PCM Capture Volume", AC97_REC_GAIN, 8, 0, 31, 0),
  75 SOC_SINGLE("PCM Capture Switch", AC97_REC_GAIN, 15, 1, 1),
  76
  77 SOC_SINGLE("Mono Playback Volume", AC97_MASTER_MONO, 0, 31, 1),
  78 SOC_SINGLE("Mono Playback Switch", AC97_MASTER_MONO, 15, 1, 1),
  79
  80 SOC_SINGLE("Phone Capture Volume", AC97_PHONE, 0, 31, 1),
  81 SOC_SINGLE("Phone Capture Switch", AC97_PHONE, 15, 1, 1),
  82
  83 SOC_SINGLE("Mic Volume", AC97_MIC, 0, 31, 1),
  84 SOC_SINGLE("Mic Switch", AC97_MIC, 15, 1, 1),
  85
  86 SOC_SINGLE("Stereo Mic Switch", AC97_AD_MISC, 6, 1, 0),
  87 SOC_DOUBLE("Line HP Swap Switch", AC97_AD_MISC, 10, 5, 1, 0),
  88
  89 SOC_DOUBLE("Surround Playback Volume", AC97_SURROUND_MASTER, 8, 0, 31, 1),
  90 SOC_DOUBLE("Surround Playback Switch", AC97_SURROUND_MASTER, 15, 7, 1, 1),
  91
  92 SOC_DOUBLE("Center/LFE Playback Volume", AC97_CENTER_LFE_MASTER, 8, 0, 31, 1),
  93 SOC_DOUBLE("Center/LFE Playback Switch", AC97_CENTER_LFE_MASTER, 15, 7, 1, 1),
  94
  95 SOC_ENUM("Capture Source", ad1980_cap_src),
  96
  97 SOC_SINGLE("Mic Boost Switch", AC97_MIC, 6, 1, 0),
  98 };
  99
 100 static unsigned int ac97_read(struct snd_soc_codec *codec,
 101         unsigned int reg)
 102 {
 103         u16 *cache = codec->reg_cache;
 104
 105         switch (reg) {
 106         case AC97_RESET:
 107         case AC97_INT_PAGING:
 108         case AC97_POWERDOWN:
 109         case AC97_EXTENDED_STATUS:
 110         case AC97_VENDOR_ID1:
 111         case AC97_VENDOR_ID2:
 112                 return soc_ac97_ops.read(codec->ac97, reg);
 113         default:
 114                 reg = reg >> 1;
 115
 116                 if (reg >= ARRAY_SIZE(ad1980_reg))
 117                         return -EINVAL;
 118
 119                 return cache[reg];
 120         }
 121 }
 122
 123 static int ac97_write(struct snd_soc_codec *codec, unsigned int reg,
 124         unsigned int val)
 125 {
 126         u16 *cache = codec->reg_cache;
 127
 128         soc_ac97_ops.write(codec->ac97, reg, val);
 129         reg = reg >> 1;
 130         if (reg < ARRAY_SIZE(ad1980_reg))
 131                 cache[reg] = val;
 132
 133         return 0;
 134 }
 135
 136 static struct snd_soc_dai_driver ad1980_dai = {
 137         .name = "ad1980-hifi",
 138         .ac97_control = 1,
 139         .playback = {
 140                 .stream_name = "Playback",
 141                 .channels_min = 2,
 142                 .channels_max = 6,
 143                 .rates = SNDRV_PCM_RATE_48000,
 144                 .formats = SND_SOC_STD_AC97_FMTS, },
 145         .capture = {
 146                 .stream_name = "Capture",
 147                 .channels_min = 2,
 148                 .channels_max = 2,
 149                 .rates = SNDRV_PCM_RATE_48000,
 150                 .formats = SND_SOC_STD_AC97_FMTS, },
 151 };
 152 EXPORT_SYMBOL_GPL(ad1980_dai);
 153
 154 static int ad1980_reset(struct snd_soc_codec *codec, int try_warm)
 155 {
 156         u16 retry_cnt = 0;
 157
 158 retry:
 159         if (try_warm && soc_ac97_ops.warm_reset) {
 160                 soc_ac97_ops.warm_reset(codec->ac97);
 161                 if (ac97_read(codec, AC97_RESET) == 0x0090)
 162                         return 1;
 163         }
 164
 165         soc_ac97_ops.reset(codec->ac97);
 166         /* Set bit 16slot in register 74h, then every slot will has only 16
 167          * bits. This command is sent out in 20bit mode, in which case the
 168          * first nibble of data is eaten by the addr. (Tag is always 16 bit)*/
 169         ac97_write(codec, AC97_AD_SERIAL_CFG, 0x9900);
 170
 171         if (ac97_read(codec, AC97_RESET)  != 0x0090)
 172                 goto err;
 173         return 0;
 174
 175 err:
 176         while (retry_cnt++ < 10)
 177                 goto retry;
 178
 179         printk(KERN_ERR "AD1980 AC97 reset failed\n");
 180         return -EIO;
 181 }
 182
 183 static int ad1980_soc_probe(struct snd_soc_codec *codec)
 184 {
 185         int ret;
 186         u16 vendor_id2;
 187         u16 ext_status;
 188
 189         printk(KERN_INFO "AD1980 SoC Audio Codec\n");
 190
 191         ret = snd_soc_new_ac97_codec(codec, &soc_ac97_ops, 0);
 192         if (ret < 0) {
 193                 printk(KERN_ERR "ad1980: failed to register AC97 codec\n");
 194                 return ret;
 195         }
 196
 197         ret = ad1980_reset(codec, 0);
 198         if (ret < 0) {
 199                 printk(KERN_ERR "Failed to reset AD1980: AC97 link error\n");
 200                 goto reset_err;
 201         }
 202
 203         /* Read out vendor ID to make sure it is ad1980 */
 204         if (ac97_read(codec, AC97_VENDOR_ID1) != 0x4144)
 205                 goto reset_err;
 206
 207         vendor_id2 = ac97_read(codec, AC97_VENDOR_ID2);
 208
 209         if (vendor_id2 != 0x5370) {
 210                 if (vendor_id2 != 0x5374)
 211                         goto reset_err;
 212                 else
 213                         printk(KERN_WARNING "ad1980: "
 214                                 "Found AD1981 - only 2/2 IN/OUT Channels "
 215                                 "supported\n");
 216         }
 217
 218         /* unmute captures and playbacks volume */
 219         ac97_write(codec, AC97_MASTER, 0x0000);
 220         ac97_write(codec, AC97_PCM, 0x0000);
 221         ac97_write(codec, AC97_REC_GAIN, 0x0000);
 222         ac97_write(codec, AC97_CENTER_LFE_MASTER, 0x0000);
 223         ac97_write(codec, AC97_SURROUND_MASTER, 0x0000);
 224
 225         /*power on LFE/CENTER/Surround DACs*/
 226         ext_status = ac97_read(codec, AC97_EXTENDED_STATUS);
 227         ac97_write(codec, AC97_EXTENDED_STATUS, ext_status&~0x3800);
 228
 229         snd_soc_add_controls(codec, ad1980_snd_ac97_controls,
 230                                 ARRAY_SIZE(ad1980_snd_ac97_controls));
 231
 232         return 0;
 233
 234 reset_err:
 235         snd_soc_free_ac97_codec(codec);
 236         return ret;
 237 }
 238
 239 static int ad1980_soc_remove(struct snd_soc_codec *codec)
 240 {
 241         snd_soc_free_ac97_codec(codec);
 242         return 0;
 243 }
 244
 245 static struct snd_soc_codec_driver soc_codec_dev_ad1980 = {
 246         .probe =        ad1980_soc_probe,
 247         .remove =       ad1980_soc_remove,
 248         .reg_cache_size = ARRAY_SIZE(ad1980_reg),
 249         .reg_word_size = sizeof(u16),
 250         .reg_cache_default = ad1980_reg,
 251         .reg_cache_step = 2,
 252         .write = ac97_write,
 253         .read = ac97_read,
 254 };
 255
 256 static __devinit int ad1980_probe(struct platform_device *pdev)
 257 {
 258         return snd_soc_register_codec(&pdev->dev,
 259                         &soc_codec_dev_ad1980, &ad1980_dai, 1);
 260 }
 261
 262 static int __devexit ad1980_remove(struct platform_device *pdev)
 263 {
 264         snd_soc_unregister_codec(&pdev->dev);
 265         return 0;
 266 }
 267
 268 static struct platform_driver ad1980_codec_driver = {
 269         .driver = {
 270                         .name = "ad1980-codec",
 271                         .owner = THIS_MODULE,
 272         },
 273
 274         .probe = ad1980_probe,
 275         .remove = __devexit_p(ad1980_remove),
 276 };
 277
 278 static int __init ad1980_init(void)
 279 {
 280         return platform_driver_register(&ad1980_codec_driver);
 281 }
 282 module_init(ad1980_init);
 283
 284 static void __exit ad1980_exit(void)
 285 {
 286         platform_driver_unregister(&ad1980_codec_driver);
 287 }
 288 module_exit(ad1980_exit);
 289
 290 MODULE_DESCRIPTION("ASoC ad1980 driver (Obsolete)");
 291 MODULE_AUTHOR("Roy Huang, Cliff Cai");
 292 MODULE_LICENSE("GPL");