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/slab.h>
  16 #include <linux/module.h>
  17 #include <linux/kernel.h>
  18 #include <linux/device.h>
  19 #include <sound/core.h>
  20 #include <sound/pcm.h>
  21 #include <sound/ac97_codec.h>
  22 #include <sound/initval.h>
  23 #include <sound/soc.h>
  24 #include <sound/soc-dapm.h>
  25
  26 #include "ad1980.h"
  27
  28 static unsigned int ac97_read(struct snd_soc_codec *codec,
  29         unsigned int reg);
  30 static int ac97_write(struct snd_soc_codec *codec,
  31         unsigned int reg, unsigned int val);
  32
  33 /*
  34  * AD1980 register cache
  35  */
  36 static const u16 ad1980_reg[] = {
  37         0x0090, 0x8000, 0x8000, 0x8000, /* 0 - 6  */
  38         0x0000, 0x0000, 0x8008, 0x8008, /* 8 - e  */
  39         0x8808, 0x8808, 0x0000, 0x8808, /* 10 - 16 */
  40         0x8808, 0x0000, 0x8000, 0x0000, /* 18 - 1e */
  41         0x0000, 0x0000, 0x0000, 0x0000, /* 20 - 26 */
  42         0x03c7, 0x0000, 0xbb80, 0xbb80, /* 28 - 2e */
  43         0xbb80, 0xbb80, 0x0000, 0x8080, /* 30 - 36 */
  44         0x8080, 0x2000, 0x0000, 0x0000, /* 38 - 3e */
  45         0x0000, 0x0000, 0x0000, 0x0000, /* reserved */
  46         0x0000, 0x0000, 0x0000, 0x0000, /* reserved */
  47         0x0000, 0x0000, 0x0000, 0x0000, /* reserved */
  48         0x0000, 0x0000, 0x0000, 0x0000, /* reserved */
  49         0x8080, 0x0000, 0x0000, 0x0000, /* 60 - 66 */
  50         0x0000, 0x0000, 0x0000, 0x0000, /* reserved */
  51         0x0000, 0x0000, 0x1001, 0x0000, /* 70 - 76 */
  52         0x0000, 0x0000, 0x4144, 0x5370  /* 78 - 7e */
  53 };
  54
  55 static const char *ad1980_rec_sel[] = {"Mic", "CD", "NC", "AUX", "Line",
  56                 "Stereo Mix", "Mono Mix", "Phone"};
  57
  58 static const struct soc_enum ad1980_cap_src =
  59         SOC_ENUM_DOUBLE(AC97_REC_SEL, 8, 0, 7, ad1980_rec_sel);
  60
  61 static const struct snd_kcontrol_new ad1980_snd_ac97_controls[] = {
  62 SOC_DOUBLE("Master Playback Volume", AC97_MASTER, 8, 0, 31, 1),
  63 SOC_SINGLE("Master Playback Switch", AC97_MASTER, 15, 1, 1),
  64
  65 SOC_DOUBLE("Headphone Playback Volume", AC97_HEADPHONE, 8, 0, 31, 1),
  66 SOC_SINGLE("Headphone Playback Switch", AC97_HEADPHONE, 15, 1, 1),
  67
  68 SOC_DOUBLE("PCM Playback Volume", AC97_PCM, 8, 0, 31, 1),
  69 SOC_SINGLE("PCM Playback Switch", AC97_PCM, 15, 1, 1),
  70
  71 SOC_DOUBLE("PCM Capture Volume", AC97_REC_GAIN, 8, 0, 31, 0),
  72 SOC_SINGLE("PCM Capture Switch", AC97_REC_GAIN, 15, 1, 1),
  73
  74 SOC_SINGLE("Mono Playback Volume", AC97_MASTER_MONO, 0, 31, 1),
  75 SOC_SINGLE("Mono Playback Switch", AC97_MASTER_MONO, 15, 1, 1),
  76
  77 SOC_SINGLE("Phone Capture Volume", AC97_PHONE, 0, 31, 1),
  78 SOC_SINGLE("Phone Capture Switch", AC97_PHONE, 15, 1, 1),
  79
  80 SOC_SINGLE("Mic Volume", AC97_MIC, 0, 31, 1),
  81 SOC_SINGLE("Mic Switch", AC97_MIC, 15, 1, 1),
  82
  83 SOC_SINGLE("Stereo Mic Switch", AC97_AD_MISC, 6, 1, 0),
  84 SOC_DOUBLE("Line HP Swap Switch", AC97_AD_MISC, 10, 5, 1, 0),
  85
  86 SOC_DOUBLE("Surround Playback Volume", AC97_SURROUND_MASTER, 8, 0, 31, 1),
  87 SOC_DOUBLE("Surround Playback Switch", AC97_SURROUND_MASTER, 15, 7, 1, 1),
  88
  89 SOC_DOUBLE("Center/LFE Playback Volume", AC97_CENTER_LFE_MASTER, 8, 0, 31, 1),
  90 SOC_DOUBLE("Center/LFE Playback Switch", AC97_CENTER_LFE_MASTER, 15, 7, 1, 1),
  91
  92 SOC_ENUM("Capture Source", ad1980_cap_src),
  93
  94 SOC_SINGLE("Mic Boost Switch", AC97_MIC, 6, 1, 0),
  95 };
  96
  97 static unsigned int ac97_read(struct snd_soc_codec *codec,
  98         unsigned int reg)
  99 {
 100         u16 *cache = codec->reg_cache;
 101
 102         switch (reg) {
 103         case AC97_RESET:
 104         case AC97_INT_PAGING:
 105         case AC97_POWERDOWN:
 106         case AC97_EXTENDED_STATUS:
 107         case AC97_VENDOR_ID1:
 108         case AC97_VENDOR_ID2:
 109                 return soc_ac97_ops.read(codec->ac97, reg);
 110         default:
 111                 reg = reg >> 1;
 112
 113                 if (reg >= ARRAY_SIZE(ad1980_reg))
 114                         return -EINVAL;
 115
 116                 return cache[reg];
 117         }
 118 }
 119
 120 static int ac97_write(struct snd_soc_codec *codec, unsigned int reg,
 121         unsigned int val)
 122 {
 123         u16 *cache = codec->reg_cache;
 124
 125         soc_ac97_ops.write(codec->ac97, reg, val);
 126         reg = reg >> 1;
 127         if (reg < ARRAY_SIZE(ad1980_reg))
 128                 cache[reg] = val;
 129
 130         return 0;
 131 }
 132
 133 struct snd_soc_dai_driver ad1980_dai = {
 134         .name = "ad1980-hifi",
 135         .ac97_control = 1,
 136         .playback = {
 137                 .stream_name = "Playback",
 138                 .channels_min = 2,
 139                 .channels_max = 6,
 140                 .rates = SNDRV_PCM_RATE_48000,
 141                 .formats = SND_SOC_STD_AC97_FMTS, },
 142         .capture = {
 143                 .stream_name = "Capture",
 144                 .channels_min = 2,
 145                 .channels_max = 2,
 146                 .rates = SNDRV_PCM_RATE_48000,
 147                 .formats = SND_SOC_STD_AC97_FMTS, },
 148 };
 149 EXPORT_SYMBOL_GPL(ad1980_dai);
 150
 151 static int ad1980_reset(struct snd_soc_codec *codec, int try_warm)
 152 {
 153         u16 retry_cnt = 0;
 154
 155 retry:
 156         if (try_warm && soc_ac97_ops.warm_reset) {
 157                 soc_ac97_ops.warm_reset(codec->ac97);
 158                 if (ac97_read(codec, AC97_RESET) == 0x0090)
 159                         return 1;
 160         }
 161
 162         soc_ac97_ops.reset(codec->ac97);
 163         /* Set bit 16slot in register 74h, then every slot will has only 16
 164          * bits. This command is sent out in 20bit mode, in which case the
 165          * first nibble of data is eaten by the addr. (Tag is always 16 bit)*/
 166         ac97_write(codec, AC97_AD_SERIAL_CFG, 0x9900);
 167
 168         if (ac97_read(codec, AC97_RESET)  != 0x0090)
 169                 goto err;
 170         return 0;
 171
 172 err:
 173         while (retry_cnt++ < 10)
 174                 goto retry;
 175
 176         printk(KERN_ERR "AD1980 AC97 reset failed\n");
 177         return -EIO;
 178 }
 179
 180 static int ad1980_soc_probe(struct snd_soc_codec *codec)
 181 {
 182         int ret;
 183         u16 vendor_id2;
 184         u16 ext_status;
 185
 186         printk(KERN_INFO "AD1980 SoC Audio Codec\n");
 187
 188         ret = snd_soc_new_ac97_codec(codec, &soc_ac97_ops, 0);
 189         if (ret < 0) {
 190                 printk(KERN_ERR "ad1980: failed to register AC97 codec\n");
 191                 return ret;
 192         }
 193
 194         ret = ad1980_reset(codec, 0);
 195         if (ret < 0) {
 196                 printk(KERN_ERR "Failed to reset AD1980: AC97 link error\n");
 197                 goto reset_err;
 198         }
 199
 200         /* Read out vendor ID to make sure it is ad1980 */
 201         if (ac97_read(codec, AC97_VENDOR_ID1) != 0x4144)
 202                 goto reset_err;
 203
 204         vendor_id2 = ac97_read(codec, AC97_VENDOR_ID2);
 205
 206         if (vendor_id2 != 0x5370) {
 207                 if (vendor_id2 != 0x5374)
 208                         goto reset_err;
 209                 else
 210                         printk(KERN_WARNING "ad1980: "
 211                                 "Found AD1981 - only 2/2 IN/OUT Channels "
 212                                 "supported\n");
 213         }
 214
 215         /* unmute captures and playbacks volume */
 216         ac97_write(codec, AC97_MASTER, 0x0000);
 217         ac97_write(codec, AC97_PCM, 0x0000);
 218         ac97_write(codec, AC97_REC_GAIN, 0x0000);
 219         ac97_write(codec, AC97_CENTER_LFE_MASTER, 0x0000);
 220         ac97_write(codec, AC97_SURROUND_MASTER, 0x0000);
 221
 222         /*power on LFE/CENTER/Surround DACs*/
 223         ext_status = ac97_read(codec, AC97_EXTENDED_STATUS);
 224         ac97_write(codec, AC97_EXTENDED_STATUS, ext_status&~0x3800);
 225
 226         snd_soc_add_controls(codec, ad1980_snd_ac97_controls,
 227                                 ARRAY_SIZE(ad1980_snd_ac97_controls));
 228
 229         return 0;
 230
 231 reset_err:
 232         snd_soc_free_ac97_codec(codec);
 233         return ret;
 234 }
 235
 236 static int ad1980_soc_remove(struct snd_soc_codec *codec)
 237 {
 238         snd_soc_free_ac97_codec(codec);
 239         return 0;
 240 }
 241
 242 static struct snd_soc_codec_driver soc_codec_dev_ad1980 = {
 243         .probe =        ad1980_soc_probe,
 244         .remove =       ad1980_soc_remove,
 245         .reg_cache_size = ARRAY_SIZE(ad1980_reg),
 246         .reg_word_size = sizeof(u16),
 247         .reg_cache_step = 2,
 248         .write = ac97_write,
 249         .read = ac97_read,
 250 };
 251
 252 static __devinit int ad1980_probe(struct platform_device *pdev)
 253 {
 254         return snd_soc_register_codec(&pdev->dev,
 255                         &soc_codec_dev_ad1980, &ad1980_dai, 1);
 256 }
 257
 258 static int __devexit ad1980_remove(struct platform_device *pdev)
 259 {
 260         snd_soc_unregister_codec(&pdev->dev);
 261         return 0;
 262 }
 263
 264 static struct platform_driver ad1980_codec_driver = {
 265         .driver = {
 266                         .name = "ad1980-codec",
 267                         .owner = THIS_MODULE,
 268         },
 269
 270         .probe = ad1980_probe,
 271         .remove = __devexit_p(ad1980_remove),
 272 };
 273
 274 static int __init ad1980_init(void)
 275 {
 276         return platform_driver_register(&ad1980_codec_driver);
 277 }
 278 module_init(ad1980_init);
 279
 280 static void __exit ad1980_exit(void)
 281 {
 282         platform_driver_unregister(&ad1980_codec_driver);
 283 }
 284 module_exit(ad1980_exit);
 285
 286 MODULE_DESCRIPTION("ASoC ad1980 driver");
 287 MODULE_AUTHOR("Roy Huang, Cliff Cai");
 288 MODULE_LICENSE("GPL");