sound/soc/samsung/smdk_wm8580.c

   1 /*
   2  *  smdk_wm8580.c
   3  *
   4  *  Copyright (c) 2009 Samsung Electronics Co. Ltd
   5  *  Author: Jaswinder Singh <jassi.brar@samsung.com>
   6  *
   7  *  This program is free software; you can redistribute  it and/or modify it
   8  *  under  the terms of  the GNU General  Public License as published by the
   9  *  Free Software Foundation;  either version 2 of the  License, or (at your
  10  *  option) any later version.
  11  */
  12
  13 #include <sound/soc.h>
  14 #include <sound/pcm_params.h>
  15
  16 #include <asm/mach-types.h>
  17
  18 #include "../codecs/wm8580.h"
  19 #include "i2s.h"
  20
  21 /*
  22  * Default CFG switch settings to use this driver:
  23  *
  24  *   SMDK6410: Set CFG1 1-3 Off, CFG2 1-4 On
  25  */
  26
  27 /* SMDK has a 12MHZ crystal attached to WM8580 */
  28 #define SMDK_WM8580_FREQ 12000000
  29
  30 static int smdk_hw_params(struct snd_pcm_substream *substream,
  31         struct snd_pcm_hw_params *params)
  32 {
  33         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  34         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
  35         struct snd_soc_dai *codec_dai = rtd->codec_dai;
  36         unsigned int pll_out;
  37         int bfs, rfs, ret;
  38
  39         switch (params_format(params)) {
  40         case SNDRV_PCM_FORMAT_U8:
  41         case SNDRV_PCM_FORMAT_S8:
  42                 bfs = 16;
  43                 break;
  44         case SNDRV_PCM_FORMAT_U16_LE:
  45         case SNDRV_PCM_FORMAT_S16_LE:
  46                 bfs = 32;
  47                 break;
  48         default:
  49                 return -EINVAL;
  50         }
  51
  52         /* The Fvco for WM8580 PLLs must fall within [90,100]MHz.
  53          * This criterion can't be met if we request PLL output
  54          * as {8000x256, 64000x256, 11025x256}Hz.
  55          * As a wayout, we rather change rfs to a minimum value that
  56          * results in (params_rate(params) * rfs), and itself, acceptable
  57          * to both - the CODEC and the CPU.
  58          */
  59         switch (params_rate(params)) {
  60         case 16000:
  61         case 22050:
  62         case 32000:
  63         case 44100:
  64         case 48000:
  65         case 88200:
  66         case 96000:
  67                 rfs = 256;
  68                 break;
  69         case 64000:
  70                 rfs = 384;
  71                 break;
  72         case 8000:
  73         case 11025:
  74                 rfs = 512;
  75                 break;
  76         default:
  77                 return -EINVAL;
  78         }
  79         pll_out = params_rate(params) * rfs;
  80
  81         /* Set the Codec DAI configuration */
  82         ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S
  83                                          | SND_SOC_DAIFMT_NB_NF
  84                                          | SND_SOC_DAIFMT_CBM_CFM);
  85         if (ret < 0)
  86                 return ret;
  87
  88         /* Set the AP DAI configuration */
  89         ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S
  90                                          | SND_SOC_DAIFMT_NB_NF
  91                                          | SND_SOC_DAIFMT_CBM_CFM);
  92         if (ret < 0)
  93                 return ret;
  94
  95         /* Set WM8580 to drive MCLK from its PLLA */
  96         ret = snd_soc_dai_set_clkdiv(codec_dai, WM8580_MCLK,
  97                                         WM8580_CLKSRC_PLLA);
  98         if (ret < 0)
  99                 return ret;
 100
 101         ret = snd_soc_dai_set_pll(codec_dai, WM8580_PLLA, 0,
 102                                         SMDK_WM8580_FREQ, pll_out);
 103         if (ret < 0)
 104                 return ret;
 105
 106         ret = snd_soc_dai_set_sysclk(codec_dai, WM8580_CLKSRC_PLLA,
 107                                      pll_out, SND_SOC_CLOCK_IN);
 108         if (ret < 0)
 109                 return ret;
 110
 111         return 0;
 112 }
 113
 114 /*
 115  * SMDK WM8580 DAI operations.
 116  */
 117 static struct snd_soc_ops smdk_ops = {
 118         .hw_params = smdk_hw_params,
 119 };
 120
 121 /* SMDK Playback widgets */
 122 static const struct snd_soc_dapm_widget wm8580_dapm_widgets_pbk[] = {
 123         SND_SOC_DAPM_HP("Front", NULL),
 124         SND_SOC_DAPM_HP("Center+Sub", NULL),
 125         SND_SOC_DAPM_HP("Rear", NULL),
 126 };
 127
 128 /* SMDK Capture widgets */
 129 static const struct snd_soc_dapm_widget wm8580_dapm_widgets_cpt[] = {
 130         SND_SOC_DAPM_MIC("MicIn", NULL),
 131         SND_SOC_DAPM_LINE("LineIn", NULL),
 132 };
 133
 134 /* SMDK-PAIFTX connections */
 135 static const struct snd_soc_dapm_route audio_map_tx[] = {
 136         /* MicIn feeds AINL */
 137         {"AINL", NULL, "MicIn"},
 138
 139         /* LineIn feeds AINL/R */
 140         {"AINL", NULL, "LineIn"},
 141         {"AINR", NULL, "LineIn"},
 142 };
 143
 144 /* SMDK-PAIFRX connections */
 145 static const struct snd_soc_dapm_route audio_map_rx[] = {
 146         /* Front Left/Right are fed VOUT1L/R */
 147         {"Front", NULL, "VOUT1L"},
 148         {"Front", NULL, "VOUT1R"},
 149
 150         /* Center/Sub are fed VOUT2L/R */
 151         {"Center+Sub", NULL, "VOUT2L"},
 152         {"Center+Sub", NULL, "VOUT2R"},
 153
 154         /* Rear Left/Right are fed VOUT3L/R */
 155         {"Rear", NULL, "VOUT3L"},
 156         {"Rear", NULL, "VOUT3R"},
 157 };
 158
 159 static int smdk_wm8580_init_paiftx(struct snd_soc_pcm_runtime *rtd)
 160 {
 161         struct snd_soc_codec *codec = rtd->codec;
 162         struct snd_soc_dapm_context *dapm = &codec->dapm;
 163
 164         /* Add smdk specific Capture widgets */
 165         snd_soc_dapm_new_controls(dapm, wm8580_dapm_widgets_cpt,
 166                                   ARRAY_SIZE(wm8580_dapm_widgets_cpt));
 167
 168         /* Set up PAIFTX audio path */
 169         snd_soc_dapm_add_routes(dapm, audio_map_tx, ARRAY_SIZE(audio_map_tx));
 170
 171         /* Enabling the microphone requires the fitting of a 0R
 172          * resistor to connect the line from the microphone jack.
 173          */
 174         snd_soc_dapm_disable_pin(dapm, "MicIn");
 175
 176         /* signal a DAPM event */
 177         snd_soc_dapm_sync(dapm);
 178
 179         return 0;
 180 }
 181
 182 static int smdk_wm8580_init_paifrx(struct snd_soc_pcm_runtime *rtd)
 183 {
 184         struct snd_soc_codec *codec = rtd->codec;
 185         struct snd_soc_dapm_context *dapm = &codec->dapm;
 186
 187         /* Add smdk specific Playback widgets */
 188         snd_soc_dapm_new_controls(dapm, wm8580_dapm_widgets_pbk,
 189                                   ARRAY_SIZE(wm8580_dapm_widgets_pbk));
 190
 191         /* Set up PAIFRX audio path */
 192         snd_soc_dapm_add_routes(dapm, audio_map_rx, ARRAY_SIZE(audio_map_rx));
 193
 194         /* signal a DAPM event */
 195         snd_soc_dapm_sync(dapm);
 196
 197         return 0;
 198 }
 199
 200 enum {
 201         PRI_PLAYBACK = 0,
 202         PRI_CAPTURE,
 203         SEC_PLAYBACK,
 204 };
 205
 206 static struct snd_soc_dai_link smdk_dai[] = {
 207         [PRI_PLAYBACK] = { /* Primary Playback i/f */
 208                 .name = "WM8580 PAIF RX",
 209                 .stream_name = "Playback",
 210                 .cpu_dai_name = "samsung-i2s.0",
 211                 .codec_dai_name = "wm8580-hifi-playback",
 212                 .platform_name = "samsung-audio",
 213                 .codec_name = "wm8580-codec.0-001b",
 214                 .init = smdk_wm8580_init_paifrx,
 215                 .ops = &smdk_ops,
 216         },
 217         [PRI_CAPTURE] = { /* Primary Capture i/f */
 218                 .name = "WM8580 PAIF TX",
 219                 .stream_name = "Capture",
 220                 .cpu_dai_name = "samsung-i2s.0",
 221                 .codec_dai_name = "wm8580-hifi-capture",
 222                 .platform_name = "samsung-audio",
 223                 .codec_name = "wm8580-codec.0-001b",
 224                 .init = smdk_wm8580_init_paiftx,
 225                 .ops = &smdk_ops,
 226         },
 227         [SEC_PLAYBACK] = { /* Sec_Fifo Playback i/f */
 228                 .name = "Sec_FIFO TX",
 229                 .stream_name = "Playback",
 230                 .cpu_dai_name = "samsung-i2s.x",
 231                 .codec_dai_name = "wm8580-hifi-playback",
 232                 .platform_name = "samsung-audio",
 233                 .codec_name = "wm8580-codec.0-001b",
 234                 .init = smdk_wm8580_init_paifrx,
 235                 .ops = &smdk_ops,
 236         },
 237 };
 238
 239 static struct snd_soc_card smdk = {
 240         .name = "SMDK-I2S",
 241         .dai_link = smdk_dai,
 242         .num_links = 2,
 243 };
 244
 245 static struct platform_device *smdk_snd_device;
 246
 247 static int __init smdk_audio_init(void)
 248 {
 249         int ret;
 250         char *str;
 251
 252         if (machine_is_smdkc100()
 253                         || machine_is_smdkv210() || machine_is_smdkc110()) {
 254                 smdk.num_links = 3;
 255                 /* Secondary is at offset SAMSUNG_I2S_SECOFF from Primary */
 256                 str = (char *)smdk_dai[SEC_PLAYBACK].cpu_dai_name;
 257                 str[strlen(str) - 1] = '0' + SAMSUNG_I2S_SECOFF;
 258         } else if (machine_is_smdk6410()) {
 259                 str = (char *)smdk_dai[PRI_PLAYBACK].cpu_dai_name;
 260                 str[strlen(str) - 1] = '2';
 261                 str = (char *)smdk_dai[PRI_CAPTURE].cpu_dai_name;
 262                 str[strlen(str) - 1] = '2';
 263         }
 264
 265         smdk_snd_device = platform_device_alloc("soc-audio", -1);
 266         if (!smdk_snd_device)
 267                 return -ENOMEM;
 268
 269         platform_set_drvdata(smdk_snd_device, &smdk);
 270         ret = platform_device_add(smdk_snd_device);
 271
 272         if (ret)
 273                 platform_device_put(smdk_snd_device);
 274
 275         return ret;
 276 }
 277 module_init(smdk_audio_init);
 278
 279 static void __exit smdk_audio_exit(void)
 280 {
 281         platform_device_unregister(smdk_snd_device);
 282 }
 283 module_exit(smdk_audio_exit);
 284
 285 MODULE_AUTHOR("Jaswinder Singh, jassi.brar@samsung.com");
 286 MODULE_DESCRIPTION("ALSA SoC SMDK WM8580");
 287 MODULE_LICENSE("GPL");