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 const struct soc_enum ad1980_cap_src =
  61         SOC_ENUM_DOUBLE(AC97_REC_SEL, 8, 0, 7, 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 unsigned int ac97_read(struct snd_soc_codec *codec,
 100         unsigned int reg)
 101 {
 102         u16 *cache = codec->reg_cache;
 103
 104         switch (reg) {
 105         case AC97_RESET:
 106         case AC97_INT_PAGING:
 107         case AC97_POWERDOWN:
 108         case AC97_EXTENDED_STATUS:
 109         case AC97_VENDOR_ID1:
 110         case AC97_VENDOR_ID2:
 111                 return soc_ac97_ops.read(codec->ac97, reg);
 112         default:
 113                 reg = reg >> 1;
 114
 115                 if (reg >= ARRAY_SIZE(ad1980_reg))
 116                         return -EINVAL;
 117
 118                 return cache[reg];
 119         }
 120 }
 121
 122 static int ac97_write(struct snd_soc_codec *codec, unsigned int reg,
 123         unsigned int val)
 124 {
 125         u16 *cache = codec->reg_cache;
 126
 127         soc_ac97_ops.write(codec->ac97, reg, val);
 128         reg = reg >> 1;
 129         if (reg < ARRAY_SIZE(ad1980_reg))
 130                 cache[reg] = val;
 131
 132         return 0;
 133 }
 134
 135 static struct snd_soc_dai_driver ad1980_dai = {
 136         .name = "ad1980-hifi",
 137         .ac97_control = 1,
 138         .playback = {
 139                 .stream_name = "Playback",
 140                 .channels_min = 2,
 141                 .channels_max = 6,
 142                 .rates = SNDRV_PCM_RATE_48000,
 143                 .formats = SND_SOC_STD_AC97_FMTS, },
 144         .capture = {
 145                 .stream_name = "Capture",
 146                 .channels_min = 2,
 147                 .channels_max = 2,
 148                 .rates = SNDRV_PCM_RATE_48000,
 149                 .formats = SND_SOC_STD_AC97_FMTS, },
 150 };
 151 EXPORT_SYMBOL_GPL(ad1980_dai);
 152
 153 static int ad1980_reset(struct snd_soc_codec *codec, int try_warm)
 154 {
 155         u16 retry_cnt = 0;
 156
 157 retry:
 158         if (try_warm && soc_ac97_ops.warm_reset) {
 159                 soc_ac97_ops.warm_reset(codec->ac97);
 160                 if (ac97_read(codec, AC97_RESET) == 0x0090)
 161                         return 1;
 162         }
 163
 164         soc_ac97_ops.reset(codec->ac97);
 165         /* Set bit 16slot in register 74h, then every slot will has only 16
 166          * bits. This command is sent out in 20bit mode, in which case the
 167          * first nibble of data is eaten by the addr. (Tag is always 16 bit)*/
 168         ac97_write(codec, AC97_AD_SERIAL_CFG, 0x9900);
 169
 170         if (ac97_read(codec, AC97_RESET)  != 0x0090)
 171                 goto err;
 172         return 0;
 173
 174 err:
 175         while (retry_cnt++ < 10)
 176                 goto retry;
 177
 178         printk(KERN_ERR "AD1980 AC97 reset failed\n");
 179         return -EIO;
 180 }
 181
 182 static int ad1980_soc_probe(struct snd_soc_codec *codec)
 183 {
 184         int ret;
 185         u16 vendor_id2;
 186         u16 ext_status;
 187
 188         printk(KERN_INFO "AD1980 SoC Audio Codec\n");
 189
 190         ret = snd_soc_new_ac97_codec(codec, &soc_ac97_ops, 0);
 191         if (ret < 0) {
 192                 printk(KERN_ERR "ad1980: failed to register AC97 codec\n");
 193                 return ret;
 194         }
 195
 196         ret = ad1980_reset(codec, 0);
 197         if (ret < 0) {
 198                 printk(KERN_ERR "Failed to reset AD1980: AC97 link error\n");
 199                 goto reset_err;
 200         }
 201
 202         /* Read out vendor ID to make sure it is ad1980 */
 203         if (ac97_read(codec, AC97_VENDOR_ID1) != 0x4144)
 204                 goto reset_err;
 205
 206         vendor_id2 = ac97_read(codec, AC97_VENDOR_ID2);
 207
 208         if (vendor_id2 != 0x5370) {
 209                 if (vendor_id2 != 0x5374)
 210                         goto reset_err;
 211                 else
 212                         printk(KERN_WARNING "ad1980: "
 213                                 "Found AD1981 - only 2/2 IN/OUT Channels "
 214                                 "supported\n");
 215         }
 216
 217         /* unmute captures and playbacks volume */
 218         ac97_write(codec, AC97_MASTER, 0x0000);
 219         ac97_write(codec, AC97_PCM, 0x0000);
 220         ac97_write(codec, AC97_REC_GAIN, 0x0000);
 221         ac97_write(codec, AC97_CENTER_LFE_MASTER, 0x0000);
 222         ac97_write(codec, AC97_SURROUND_MASTER, 0x0000);
 223
 224         /*power on LFE/CENTER/Surround DACs*/
 225         ext_status = ac97_read(codec, AC97_EXTENDED_STATUS);
 226         ac97_write(codec, AC97_EXTENDED_STATUS, ext_status&~0x3800);
 227
 228         snd_soc_add_controls(codec, ad1980_snd_ac97_controls,
 229                                 ARRAY_SIZE(ad1980_snd_ac97_controls));
 230
 231         return 0;
 232
 233 reset_err:
 234         snd_soc_free_ac97_codec(codec);
 235         return ret;
 236 }
 237
 238 static int ad1980_soc_remove(struct snd_soc_codec *codec)
 239 {
 240         snd_soc_free_ac97_codec(codec);
 241         return 0;
 242 }
 243
 244 static struct snd_soc_codec_driver soc_codec_dev_ad1980 = {
 245         .probe =        ad1980_soc_probe,
 246         .remove =       ad1980_soc_remove,
 247         .reg_cache_size = ARRAY_SIZE(ad1980_reg),
 248         .reg_word_size = sizeof(u16),
 249         .reg_cache_default = ad1980_reg,
 250         .reg_cache_step = 2,
 251         .write = ac97_write,
 252         .read = ac97_read,
 253 };
 254
 255 static __devinit int ad1980_probe(struct platform_device *pdev)
 256 {
 257         return snd_soc_register_codec(&pdev->dev,
 258                         &soc_codec_dev_ad1980, &ad1980_dai, 1);
 259 }
 260
 261 static int __devexit ad1980_remove(struct platform_device *pdev)
 262 {
 263         snd_soc_unregister_codec(&pdev->dev);
 264         return 0;
 265 }
 266
 267 static struct platform_driver ad1980_codec_driver = {
 268         .driver = {
 269                         .name = "ad1980-codec",
 270                         .owner = THIS_MODULE,
 271         },
 272
 273         .probe = ad1980_probe,
 274         .remove = __devexit_p(ad1980_remove),
 275 };
 276
 277 static int __init ad1980_init(void)
 278 {
 279         return platform_driver_register(&ad1980_codec_driver);
 280 }
 281 module_init(ad1980_init);
 282
 283 static void __exit ad1980_exit(void)
 284 {
 285         platform_driver_unregister(&ad1980_codec_driver);
 286 }
 287 module_exit(ad1980_exit);
 288
 289 MODULE_DESCRIPTION("ASoC ad1980 driver (Obsolete)");
 290 MODULE_AUTHOR("Roy Huang, Cliff Cai");
 291 MODULE_LICENSE("GPL");