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
  33 #include "ad1980.h"
  34
  35 /*
  36  * AD1980 register cache
  37  */
  38 static const u16 ad1980_reg[] = {
  39         0x0090, 0x8000, 0x8000, 0x8000, /* 0 - 6  */
  40         0x0000, 0x0000, 0x8008, 0x8008, /* 8 - e  */
  41         0x8808, 0x8808, 0x0000, 0x8808, /* 10 - 16 */
  42         0x8808, 0x0000, 0x8000, 0x0000, /* 18 - 1e */
  43         0x0000, 0x0000, 0x0000, 0x0000, /* 20 - 26 */
  44         0x03c7, 0x0000, 0xbb80, 0xbb80, /* 28 - 2e */
  45         0xbb80, 0xbb80, 0x0000, 0x8080, /* 30 - 36 */
  46         0x8080, 0x2000, 0x0000, 0x0000, /* 38 - 3e */
  47         0x0000, 0x0000, 0x0000, 0x0000, /* reserved */
  48         0x0000, 0x0000, 0x0000, 0x0000, /* reserved */
  49         0x0000, 0x0000, 0x0000, 0x0000, /* reserved */
  50         0x0000, 0x0000, 0x0000, 0x0000, /* reserved */
  51         0x8080, 0x0000, 0x0000, 0x0000, /* 60 - 66 */
  52         0x0000, 0x0000, 0x0000, 0x0000, /* reserved */
  53         0x0000, 0x0000, 0x1001, 0x0000, /* 70 - 76 */
  54         0x0000, 0x0000, 0x4144, 0x5370  /* 78 - 7e */
  55 };
  56
  57 static const char *ad1980_rec_sel[] = {"Mic", "CD", "NC", "AUX", "Line",
  58                 "Stereo Mix", "Mono Mix", "Phone"};
  59
  60 static SOC_ENUM_DOUBLE_DECL(ad1980_cap_src,
  61                             AC97_REC_SEL, 8, 0, ad1980_rec_sel);
  62
  63 static const struct snd_kcontrol_new ad1980_snd_ac97_controls[] = {
  64 SOC_DOUBLE("Master Playback Volume", AC97_MASTER, 8, 0, 31, 1),
  65 SOC_SINGLE("Master Playback Switch", AC97_MASTER, 15, 1, 1),
  66
  67 SOC_DOUBLE("Headphone Playback Volume", AC97_HEADPHONE, 8, 0, 31, 1),
  68 SOC_SINGLE("Headphone Playback Switch", AC97_HEADPHONE, 15, 1, 1),
  69
  70 SOC_DOUBLE("PCM Playback Volume", AC97_PCM, 8, 0, 31, 1),
  71 SOC_SINGLE("PCM Playback Switch", AC97_PCM, 15, 1, 1),
  72
  73 SOC_DOUBLE("PCM Capture Volume", AC97_REC_GAIN, 8, 0, 31, 0),
  74 SOC_SINGLE("PCM Capture Switch", AC97_REC_GAIN, 15, 1, 1),
  75
  76 SOC_SINGLE("Mono Playback Volume", AC97_MASTER_MONO, 0, 31, 1),
  77 SOC_SINGLE("Mono Playback Switch", AC97_MASTER_MONO, 15, 1, 1),
  78
  79 SOC_SINGLE("Phone Capture Volume", AC97_PHONE, 0, 31, 1),
  80 SOC_SINGLE("Phone Capture Switch", AC97_PHONE, 15, 1, 1),
  81
  82 SOC_SINGLE("Mic Volume", AC97_MIC, 0, 31, 1),
  83 SOC_SINGLE("Mic Switch", AC97_MIC, 15, 1, 1),
  84
  85 SOC_SINGLE("Stereo Mic Switch", AC97_AD_MISC, 6, 1, 0),
  86 SOC_DOUBLE("Line HP Swap Switch", AC97_AD_MISC, 10, 5, 1, 0),
  87
  88 SOC_DOUBLE("Surround Playback Volume", AC97_SURROUND_MASTER, 8, 0, 31, 1),
  89 SOC_DOUBLE("Surround Playback Switch", AC97_SURROUND_MASTER, 15, 7, 1, 1),
  90
  91 SOC_DOUBLE("Center/LFE Playback Volume", AC97_CENTER_LFE_MASTER, 8, 0, 31, 1),
  92 SOC_DOUBLE("Center/LFE Playback Switch", AC97_CENTER_LFE_MASTER, 15, 7, 1, 1),
  93
  94 SOC_ENUM("Capture Source", ad1980_cap_src),
  95
  96 SOC_SINGLE("Mic Boost Switch", AC97_MIC, 6, 1, 0),
  97 };
  98
  99 static const struct snd_soc_dapm_widget ad1980_dapm_widgets[] = {
 100 SND_SOC_DAPM_INPUT("MIC1"),
 101 SND_SOC_DAPM_INPUT("MIC2"),
 102 SND_SOC_DAPM_INPUT("CD_L"),
 103 SND_SOC_DAPM_INPUT("CD_R"),
 104 SND_SOC_DAPM_INPUT("AUX_L"),
 105 SND_SOC_DAPM_INPUT("AUX_R"),
 106 SND_SOC_DAPM_INPUT("LINE_IN_L"),
 107 SND_SOC_DAPM_INPUT("LINE_IN_R"),
 108
 109 SND_SOC_DAPM_OUTPUT("LFE_OUT"),
 110 SND_SOC_DAPM_OUTPUT("CENTER_OUT"),
 111 SND_SOC_DAPM_OUTPUT("LINE_OUT_L"),
 112 SND_SOC_DAPM_OUTPUT("LINE_OUT_R"),
 113 SND_SOC_DAPM_OUTPUT("MONO_OUT"),
 114 SND_SOC_DAPM_OUTPUT("HP_OUT_L"),
 115 SND_SOC_DAPM_OUTPUT("HP_OUT_R"),
 116 };
 117
 118 static const struct snd_soc_dapm_route ad1980_dapm_routes[] = {
 119         { "Capture", NULL, "MIC1" },
 120         { "Capture", NULL, "MIC2" },
 121         { "Capture", NULL, "CD_L" },
 122         { "Capture", NULL, "CD_R" },
 123         { "Capture", NULL, "AUX_L" },
 124         { "Capture", NULL, "AUX_R" },
 125         { "Capture", NULL, "LINE_IN_L" },
 126         { "Capture", NULL, "LINE_IN_R" },
 127
 128         { "LFE_OUT", NULL, "Playback" },
 129         { "CENTER_OUT", NULL, "Playback" },
 130         { "LINE_OUT_L", NULL, "Playback" },
 131         { "LINE_OUT_R", NULL, "Playback" },
 132         { "MONO_OUT", NULL, "Playback" },
 133         { "HP_OUT_L", NULL, "Playback" },
 134         { "HP_OUT_R", NULL, "Playback" },
 135 };
 136
 137 static unsigned int ac97_read(struct snd_soc_codec *codec,
 138         unsigned int reg)
 139 {
 140         u16 *cache = codec->reg_cache;
 141
 142         switch (reg) {
 143         case AC97_RESET:
 144         case AC97_INT_PAGING:
 145         case AC97_POWERDOWN:
 146         case AC97_EXTENDED_STATUS:
 147         case AC97_VENDOR_ID1:
 148         case AC97_VENDOR_ID2:
 149                 return soc_ac97_ops->read(codec->ac97, reg);
 150         default:
 151                 reg = reg >> 1;
 152
 153                 if (reg >= ARRAY_SIZE(ad1980_reg))
 154                         return -EINVAL;
 155
 156                 return cache[reg];
 157         }
 158 }
 159
 160 static int ac97_write(struct snd_soc_codec *codec, unsigned int reg,
 161         unsigned int val)
 162 {
 163         u16 *cache = codec->reg_cache;
 164
 165         soc_ac97_ops->write(codec->ac97, reg, val);
 166         reg = reg >> 1;
 167         if (reg < ARRAY_SIZE(ad1980_reg))
 168                 cache[reg] = val;
 169
 170         return 0;
 171 }
 172
 173 static struct snd_soc_dai_driver ad1980_dai = {
 174         .name = "ad1980-hifi",
 175         .ac97_control = 1,
 176         .playback = {
 177                 .stream_name = "Playback",
 178                 .channels_min = 2,
 179                 .channels_max = 6,
 180                 .rates = SNDRV_PCM_RATE_48000,
 181                 .formats = SND_SOC_STD_AC97_FMTS, },
 182         .capture = {
 183                 .stream_name = "Capture",
 184                 .channels_min = 2,
 185                 .channels_max = 2,
 186                 .rates = SNDRV_PCM_RATE_48000,
 187                 .formats = SND_SOC_STD_AC97_FMTS, },
 188 };
 189
 190 static int ad1980_reset(struct snd_soc_codec *codec, int try_warm)
 191 {
 192         unsigned int retry_cnt = 0;
 193
 194         do {
 195                 if (try_warm && soc_ac97_ops->warm_reset) {
 196                         soc_ac97_ops->warm_reset(codec->ac97);
 197                         if (ac97_read(codec, AC97_RESET) == 0x0090)
 198                                 return 1;
 199                 }
 200
 201                 soc_ac97_ops->reset(codec->ac97);
 202                 /*
 203                  * Set bit 16slot in register 74h, then every slot will has only
 204                  * 16 bits. This command is sent out in 20bit mode, in which
 205                  * case the first nibble of data is eaten by the addr. (Tag is
 206                  * always 16 bit)
 207                  */
 208                 ac97_write(codec, AC97_AD_SERIAL_CFG, 0x9900);
 209
 210                 if (ac97_read(codec, AC97_RESET)  == 0x0090)
 211                         return 0;
 212         } while (retry_cnt++ < 10);
 213
 214         printk(KERN_ERR "AD1980 AC97 reset failed\n");
 215         return -EIO;
 216 }
 217
 218 static int ad1980_soc_probe(struct snd_soc_codec *codec)
 219 {
 220         int ret;
 221         u16 vendor_id2;
 222         u16 ext_status;
 223
 224         printk(KERN_INFO "AD1980 SoC Audio Codec\n");
 225
 226         ret = snd_soc_new_ac97_codec(codec, soc_ac97_ops, 0);
 227         if (ret < 0) {
 228                 printk(KERN_ERR "ad1980: failed to register AC97 codec\n");
 229                 return ret;
 230         }
 231
 232         ret = ad1980_reset(codec, 0);
 233         if (ret < 0) {
 234                 printk(KERN_ERR "Failed to reset AD1980: AC97 link error\n");
 235                 goto reset_err;
 236         }
 237
 238         /* Read out vendor ID to make sure it is ad1980 */
 239         if (ac97_read(codec, AC97_VENDOR_ID1) != 0x4144) {
 240                 ret = -ENODEV;
 241                 goto reset_err;
 242         }
 243
 244         vendor_id2 = ac97_read(codec, AC97_VENDOR_ID2);
 245
 246         if (vendor_id2 != 0x5370) {
 247                 if (vendor_id2 != 0x5374) {
 248                         ret = -ENODEV;
 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
 257         /* unmute captures and playbacks volume */
 258         ac97_write(codec, AC97_MASTER, 0x0000);
 259         ac97_write(codec, AC97_PCM, 0x0000);
 260         ac97_write(codec, AC97_REC_GAIN, 0x0000);
 261         ac97_write(codec, AC97_CENTER_LFE_MASTER, 0x0000);
 262         ac97_write(codec, AC97_SURROUND_MASTER, 0x0000);
 263
 264         /*power on LFE/CENTER/Surround DACs*/
 265         ext_status = ac97_read(codec, AC97_EXTENDED_STATUS);
 266         ac97_write(codec, AC97_EXTENDED_STATUS, ext_status&~0x3800);
 267
 268         snd_soc_add_codec_controls(codec, ad1980_snd_ac97_controls,
 269                                 ARRAY_SIZE(ad1980_snd_ac97_controls));
 270
 271         return 0;
 272
 273 reset_err:
 274         snd_soc_free_ac97_codec(codec);
 275         return ret;
 276 }
 277
 278 static int ad1980_soc_remove(struct snd_soc_codec *codec)
 279 {
 280         snd_soc_free_ac97_codec(codec);
 281         return 0;
 282 }
 283
 284 static struct snd_soc_codec_driver soc_codec_dev_ad1980 = {
 285         .probe =        ad1980_soc_probe,
 286         .remove =       ad1980_soc_remove,
 287         .reg_cache_size = ARRAY_SIZE(ad1980_reg),
 288         .reg_word_size = sizeof(u16),
 289         .reg_cache_default = ad1980_reg,
 290         .reg_cache_step = 2,
 291         .write = ac97_write,
 292         .read = ac97_read,
 293
 294         .dapm_widgets = ad1980_dapm_widgets,
 295         .num_dapm_widgets = ARRAY_SIZE(ad1980_dapm_widgets),
 296         .dapm_routes = ad1980_dapm_routes,
 297         .num_dapm_routes = ARRAY_SIZE(ad1980_dapm_routes),
 298 };
 299
 300 static int ad1980_probe(struct platform_device *pdev)
 301 {
 302         return snd_soc_register_codec(&pdev->dev,
 303                         &soc_codec_dev_ad1980, &ad1980_dai, 1);
 304 }
 305
 306 static int ad1980_remove(struct platform_device *pdev)
 307 {
 308         snd_soc_unregister_codec(&pdev->dev);
 309         return 0;
 310 }
 311
 312 static struct platform_driver ad1980_codec_driver = {
 313         .driver = {
 314                         .name = "ad1980",
 315                         .owner = THIS_MODULE,
 316         },
 317
 318         .probe = ad1980_probe,
 319         .remove = ad1980_remove,
 320 };
 321
 322 module_platform_driver(ad1980_codec_driver);
 323
 324 MODULE_DESCRIPTION("ASoC ad1980 driver (Obsolete)");
 325 MODULE_AUTHOR("Roy Huang, Cliff Cai");
 326 MODULE_LICENSE("GPL");