LXR linux/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/module.h>
  16#include <linux/kernel.h>
  17#include <linux/device.h>
  18#include <sound/core.h>
  19#include <sound/pcm.h>
  20#include <sound/ac97_codec.h>
  21#include <sound/initval.h>
  22#include <sound/soc.h>
  23#include <sound/soc-dapm.h>
  24
  25#include "ad1980.h"
  26
  27static unsigned int ac97_read(struct snd_soc_codec *codec,
  28        unsigned int reg);
  29static int ac97_write(struct snd_soc_codec *codec,
  30        unsigned int reg, unsigned int val);
  31
  32/*
  33 * AD1980 register cache
  34 */
  35static const u16 ad1980_reg[] = {
  36        0x0090, 0x8000, 0x8000, 0x8000, /* 0 - 6  */
  37        0x0000, 0x0000, 0x8008, 0x8008, /* 8 - e  */
  38        0x8808, 0x8808, 0x0000, 0x8808, /* 10 - 16 */
  39        0x8808, 0x0000, 0x8000, 0x0000, /* 18 - 1e */
  40        0x0000, 0x0000, 0x0000, 0x0000, /* 20 - 26 */
  41        0x03c7, 0x0000, 0xbb80, 0xbb80, /* 28 - 2e */
  42        0xbb80, 0xbb80, 0x0000, 0x8080, /* 30 - 36 */
  43        0x8080, 0x2000, 0x0000, 0x0000, /* 38 - 3e */
  44        0x0000, 0x0000, 0x0000, 0x0000, /* reserved */
  45        0x0000, 0x0000, 0x0000, 0x0000, /* reserved */
  46        0x0000, 0x0000, 0x0000, 0x0000, /* reserved */
  47        0x0000, 0x0000, 0x0000, 0x0000, /* reserved */
  48        0x8080, 0x0000, 0x0000, 0x0000, /* 60 - 66 */
  49        0x0000, 0x0000, 0x0000, 0x0000, /* reserved */
  50        0x0000, 0x0000, 0x1001, 0x0000, /* 70 - 76 */
  51        0x0000, 0x0000, 0x4144, 0x5370  /* 78 - 7e */
  52};
  53
  54static const char *ad1980_rec_sel[] = {"Mic", "CD", "NC", "AUX", "Line",
  55                "Stereo Mix", "Mono Mix", "Phone"};
  56
  57static const struct soc_enum ad1980_cap_src =
  58        SOC_ENUM_DOUBLE(AC97_REC_SEL, 8, 0, 7, ad1980_rec_sel);
  59
  60static const struct snd_kcontrol_new ad1980_snd_ac97_controls[] = {
  61SOC_DOUBLE("Master Playback Volume", AC97_MASTER, 8, 0, 31, 1),
  62SOC_SINGLE("Master Playback Switch", AC97_MASTER, 15, 1, 1),
  63
  64SOC_DOUBLE("Headphone Playback Volume", AC97_HEADPHONE, 8, 0, 31, 1),
  65SOC_SINGLE("Headphone Playback Switch", AC97_HEADPHONE, 15, 1, 1),
  66
  67SOC_DOUBLE("PCM Playback Volume", AC97_PCM, 8, 0, 31, 1),
  68SOC_SINGLE("PCM Playback Switch", AC97_PCM, 15, 1, 1),
  69
  70SOC_DOUBLE("PCM Capture Volume", AC97_REC_GAIN, 8, 0, 31, 0),
  71SOC_SINGLE("PCM Capture Switch", AC97_REC_GAIN, 15, 1, 1),
  72
  73SOC_SINGLE("Mono Playback Volume", AC97_MASTER_MONO, 0, 31, 1),
  74SOC_SINGLE("Mono Playback Switch", AC97_MASTER_MONO, 15, 1, 1),
  75
  76SOC_SINGLE("Phone Capture Volume", AC97_PHONE, 0, 31, 1),
  77SOC_SINGLE("Phone Capture Switch", AC97_PHONE, 15, 1, 1),
  78
  79SOC_SINGLE("Mic Volume", AC97_MIC, 0, 31, 1),
  80SOC_SINGLE("Mic Switch", AC97_MIC, 15, 1, 1),
  81
  82SOC_SINGLE("Stereo Mic Switch", AC97_AD_MISC, 6, 1, 0),
  83SOC_DOUBLE("Line HP Swap Switch", AC97_AD_MISC, 10, 5, 1, 0),
  84
  85SOC_DOUBLE("Surround Playback Volume", AC97_SURROUND_MASTER, 8, 0, 31, 1),
  86SOC_DOUBLE("Surround Playback Switch", AC97_SURROUND_MASTER, 15, 7, 1, 1),
  87
  88SOC_DOUBLE("Center/LFE Playback Volume", AC97_CENTER_LFE_MASTER, 8, 0, 31, 1),
  89SOC_DOUBLE("Center/LFE Playback Switch", AC97_CENTER_LFE_MASTER, 15, 7, 1, 1),
  90
  91SOC_ENUM("Capture Source", ad1980_cap_src),
  92
  93SOC_SINGLE("Mic Boost Switch", AC97_MIC, 6, 1, 0),
  94};
  95
  96static unsigned int ac97_read(struct snd_soc_codec *codec,
  97        unsigned int reg)
  98{
  99        u16 *cache = codec->reg_cache;
 100
 101        switch (reg) {
 102        case AC97_RESET:
 103        case AC97_INT_PAGING:
 104        case AC97_POWERDOWN:
 105        case AC97_EXTENDED_STATUS:
 106        case AC97_VENDOR_ID1:
 107        case AC97_VENDOR_ID2:
 108                return soc_ac97_ops.read(codec->ac97, reg);
 109        default:
 110                reg = reg >> 1;
 111
 112                if (reg >= ARRAY_SIZE(ad1980_reg))
 113                        return -EINVAL;
 114
 115                return cache[reg];
 116        }
 117}
 118
 119static int ac97_write(struct snd_soc_codec *codec, unsigned int reg,
 120        unsigned int val)
 121{
 122        u16 *cache = codec->reg_cache;
 123
 124        soc_ac97_ops.write(codec->ac97, reg, val);
 125        reg = reg >> 1;
 126        if (reg < ARRAY_SIZE(ad1980_reg))
 127                cache[reg] = val;
 128
 129        return 0;
 130}
 131
 132struct snd_soc_dai ad1980_dai = {
 133        .name = "AC97",
 134        .ac97_control = 1,
 135        .playback = {
 136                .stream_name = "Playback",
 137                .channels_min = 2,
 138                .channels_max = 6,
 139                .rates = SNDRV_PCM_RATE_48000,
 140                .formats = SND_SOC_STD_AC97_FMTS, },
 141        .capture = {
 142                .stream_name = "Capture",
 143                .channels_min = 2,
 144                .channels_max = 2,
 145                .rates = SNDRV_PCM_RATE_48000,
 146                .formats = SND_SOC_STD_AC97_FMTS, },
 147};
 148EXPORT_SYMBOL_GPL(ad1980_dai);
 149
 150static int ad1980_reset(struct snd_soc_codec *codec, int try_warm)
 151{
 152        u16 retry_cnt = 0;
 153
 154retry:
 155        if (try_warm && soc_ac97_ops.warm_reset) {
 156                soc_ac97_ops.warm_reset(codec->ac97);
 157                if (ac97_read(codec, AC97_RESET) == 0x0090)
 158                        return 1;
 159        }
 160
 161        soc_ac97_ops.reset(codec->ac97);
 162        /* Set bit 16slot in register 74h, then every slot will has only 16
 163         * bits. This command is sent out in 20bit mode, in which case the
 164         * first nibble of data is eaten by the addr. (Tag is always 16 bit)*/
 165        ac97_write(codec, AC97_AD_SERIAL_CFG, 0x9900);
 166
 167        if (ac97_read(codec, AC97_RESET)  != 0x0090)
 168                goto err;
 169        return 0;
 170
 171err:
 172        while (retry_cnt++ < 10)
 173                goto retry;
 174
 175        printk(KERN_ERR "AD1980 AC97 reset failed\n");
 176        return -EIO;
 177}
 178
 179static int ad1980_soc_probe(struct platform_device *pdev)
 180{
 181        struct snd_soc_device *socdev = platform_get_drvdata(pdev);
 182        struct snd_soc_codec *codec;
 183        int ret = 0;
 184        u16 vendor_id2;
 185        u16 ext_status;
 186
 187        printk(KERN_INFO "AD1980 SoC Audio Codec\n");
 188
 189        socdev->card->codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
 190        if (socdev->card->codec == NULL)
 191                return -ENOMEM;
 192        codec = socdev->card->codec;
 193        mutex_init(&codec->mutex);
 194
 195        codec->reg_cache =
 196                kzalloc(sizeof(u16) * ARRAY_SIZE(ad1980_reg), GFP_KERNEL);
 197        if (codec->reg_cache == NULL) {
 198                ret = -ENOMEM;
 199                goto cache_err;
 200        }
 201        memcpy(codec->reg_cache, ad1980_reg, sizeof(u16) * \
 202                        ARRAY_SIZE(ad1980_reg));
 203        codec->reg_cache_size = sizeof(u16) * ARRAY_SIZE(ad1980_reg);
 204        codec->reg_cache_step = 2;
 205        codec->name = "AD1980";
 206        codec->owner = THIS_MODULE;
 207        codec->dai = &ad1980_dai;
 208        codec->num_dai = 1;
 209        codec->write = ac97_write;
 210        codec->read = ac97_read;
 211        INIT_LIST_HEAD(&codec->dapm_widgets);
 212        INIT_LIST_HEAD(&codec->dapm_paths);
 213
 214        ret = snd_soc_new_ac97_codec(codec, &soc_ac97_ops, 0);
 215        if (ret < 0) {
 216                printk(KERN_ERR "ad1980: failed to register AC97 codec\n");
 217                goto codec_err;
 218        }
 219
 220        /* register pcms */
 221        ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
 222        if (ret < 0)
 223                goto pcm_err;
 224
 225
 226        ret = ad1980_reset(codec, 0);
 227        if (ret < 0) {
 228                printk(KERN_ERR "Failed to reset AD1980: AC97 link error\n");
 229                goto reset_err;
 230        }
 231
 232        /* Read out vendor ID to make sure it is ad1980 */
 233        if (ac97_read(codec, AC97_VENDOR_ID1) != 0x4144)
 234                goto reset_err;
 235
 236        vendor_id2 = ac97_read(codec, AC97_VENDOR_ID2);
 237
 238        if (vendor_id2 != 0x5370) {
 239                if (vendor_id2 != 0x5374)
 240                        goto reset_err;
 241                else
 242                        printk(KERN_WARNING "ad1980: "
 243                                "Found AD1981 - only 2/2 IN/OUT Channels "
 244                                "supported\n");
 245        }
 246
 247        /* unmute captures and playbacks volume */
 248        ac97_write(codec, AC97_MASTER, 0x0000);
 249        ac97_write(codec, AC97_PCM, 0x0000);
 250        ac97_write(codec, AC97_REC_GAIN, 0x0000);
 251        ac97_write(codec, AC97_CENTER_LFE_MASTER, 0x0000);
 252        ac97_write(codec, AC97_SURROUND_MASTER, 0x0000);
 253
 254        /*power on LFE/CENTER/Surround DACs*/
 255        ext_status = ac97_read(codec, AC97_EXTENDED_STATUS);
 256        ac97_write(codec, AC97_EXTENDED_STATUS, ext_status&~0x3800);
 257
 258        snd_soc_add_controls(codec, ad1980_snd_ac97_controls,
 259                                ARRAY_SIZE(ad1980_snd_ac97_controls));
 260        ret = snd_soc_init_card(socdev);
 261        if (ret < 0) {
 262                printk(KERN_ERR "ad1980: failed to register card\n");
 263                goto reset_err;
 264        }
 265
 266        return 0;
 267
 268reset_err:
 269        snd_soc_free_pcms(socdev);
 270
 271pcm_err:
 272        snd_soc_free_ac97_codec(codec);
 273
 274codec_err:
 275        kfree(codec->reg_cache);
 276
 277cache_err:
 278        kfree(socdev->card->codec);
 279        socdev->card->codec = NULL;
 280        return ret;
 281}
 282
 283static int ad1980_soc_remove(struct platform_device *pdev)
 284{
 285        struct snd_soc_device *socdev = platform_get_drvdata(pdev);
 286        struct snd_soc_codec *codec = socdev->card->codec;
 287
 288        if (codec == NULL)
 289                return 0;
 290
 291        snd_soc_dapm_free(socdev);
 292        snd_soc_free_pcms(socdev);
 293        snd_soc_free_ac97_codec(codec);
 294        kfree(codec->reg_cache);
 295        kfree(codec);
 296        return 0;
 297}
 298
 299struct snd_soc_codec_device soc_codec_dev_ad1980 = {
 300        .probe =        ad1980_soc_probe,
 301        .remove =       ad1980_soc_remove,
 302};
 303EXPORT_SYMBOL_GPL(soc_codec_dev_ad1980);
 304
 305MODULE_DESCRIPTION("ASoC ad1980 driver");
 306MODULE_AUTHOR("Roy Huang, Cliff Cai");
 307MODULE_LICENSE("GPL");
 308