sound/soc/pxa/pxa2xx-ac97.c

   1 /*
   2  * linux/sound/pxa2xx-ac97.c -- AC97 support for the Intel PXA2xx chip.
   3  *
   4  * Author:      Nicolas Pitre
   5  * Created:     Dec 02, 2004
   6  * Copyright:   MontaVista Software Inc.
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License version 2 as
  10  * published by the Free Software Foundation.
  11  */
  12
  13 #include <linux/init.h>
  14 #include <linux/module.h>
  15 #include <linux/platform_device.h>
  16
  17 #include <sound/core.h>
  18 #include <sound/ac97_codec.h>
  19 #include <sound/soc.h>
  20 #include <sound/pxa2xx-lib.h>
  21
  22 #include <mach/hardware.h>
  23 #include <mach/regs-ac97.h>
  24 #include <mach/dma.h>
  25 #include <mach/audio.h>
  26
  27 #include "pxa2xx-pcm.h"
  28 #include "pxa2xx-ac97.h"
  29
  30 static void pxa2xx_ac97_warm_reset(struct snd_ac97 *ac97)
  31 {
  32         pxa2xx_ac97_try_warm_reset(ac97);
  33
  34         pxa2xx_ac97_finish_reset(ac97);
  35 }
  36
  37 static void pxa2xx_ac97_cold_reset(struct snd_ac97 *ac97)
  38 {
  39         pxa2xx_ac97_try_cold_reset(ac97);
  40
  41         pxa2xx_ac97_finish_reset(ac97);
  42 }
  43
  44 struct snd_ac97_bus_ops soc_ac97_ops = {
  45         .read   = pxa2xx_ac97_read,
  46         .write  = pxa2xx_ac97_write,
  47         .warm_reset     = pxa2xx_ac97_warm_reset,
  48         .reset  = pxa2xx_ac97_cold_reset,
  49 };
  50
  51 static struct pxa2xx_pcm_dma_params pxa2xx_ac97_pcm_stereo_out = {
  52         .name                   = "AC97 PCM Stereo out",
  53         .dev_addr               = __PREG(PCDR),
  54         .drcmr                  = &DRCMR(12),
  55         .dcmd                   = DCMD_INCSRCADDR | DCMD_FLOWTRG |
  56                                   DCMD_BURST32 | DCMD_WIDTH4,
  57 };
  58
  59 static struct pxa2xx_pcm_dma_params pxa2xx_ac97_pcm_stereo_in = {
  60         .name                   = "AC97 PCM Stereo in",
  61         .dev_addr               = __PREG(PCDR),
  62         .drcmr                  = &DRCMR(11),
  63         .dcmd                   = DCMD_INCTRGADDR | DCMD_FLOWSRC |
  64                                   DCMD_BURST32 | DCMD_WIDTH4,
  65 };
  66
  67 static struct pxa2xx_pcm_dma_params pxa2xx_ac97_pcm_aux_mono_out = {
  68         .name                   = "AC97 Aux PCM (Slot 5) Mono out",
  69         .dev_addr               = __PREG(MODR),
  70         .drcmr                  = &DRCMR(10),
  71         .dcmd                   = DCMD_INCSRCADDR | DCMD_FLOWTRG |
  72                                   DCMD_BURST16 | DCMD_WIDTH2,
  73 };
  74
  75 static struct pxa2xx_pcm_dma_params pxa2xx_ac97_pcm_aux_mono_in = {
  76         .name                   = "AC97 Aux PCM (Slot 5) Mono in",
  77         .dev_addr               = __PREG(MODR),
  78         .drcmr                  = &DRCMR(9),
  79         .dcmd                   = DCMD_INCTRGADDR | DCMD_FLOWSRC |
  80                                   DCMD_BURST16 | DCMD_WIDTH2,
  81 };
  82
  83 static struct pxa2xx_pcm_dma_params pxa2xx_ac97_pcm_mic_mono_in = {
  84         .name                   = "AC97 Mic PCM (Slot 6) Mono in",
  85         .dev_addr               = __PREG(MCDR),
  86         .drcmr                  = &DRCMR(8),
  87         .dcmd                   = DCMD_INCTRGADDR | DCMD_FLOWSRC |
  88                                   DCMD_BURST16 | DCMD_WIDTH2,
  89 };
  90
  91 #ifdef CONFIG_PM
  92 static int pxa2xx_ac97_suspend(struct snd_soc_dai *dai)
  93 {
  94         return pxa2xx_ac97_hw_suspend();
  95 }
  96
  97 static int pxa2xx_ac97_resume(struct snd_soc_dai *dai)
  98 {
  99         return pxa2xx_ac97_hw_resume();
 100 }
 101
 102 #else
 103 #define pxa2xx_ac97_suspend     NULL
 104 #define pxa2xx_ac97_resume      NULL
 105 #endif
 106
 107 static int pxa2xx_ac97_probe(struct platform_device *pdev,
 108                              struct snd_soc_dai *dai)
 109 {
 110         return pxa2xx_ac97_hw_probe(to_platform_device(dai->dev));
 111 }
 112
 113 static void pxa2xx_ac97_remove(struct platform_device *pdev,
 114                                struct snd_soc_dai *dai)
 115 {
 116         pxa2xx_ac97_hw_remove(to_platform_device(dai->dev));
 117 }
 118
 119 static int pxa2xx_ac97_hw_params(struct snd_pcm_substream *substream,
 120                                  struct snd_pcm_hw_params *params,
 121                                  struct snd_soc_dai *dai)
 122 {
 123         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 124         struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
 125
 126         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
 127                 cpu_dai->dma_data = &pxa2xx_ac97_pcm_stereo_out;
 128         else
 129                 cpu_dai->dma_data = &pxa2xx_ac97_pcm_stereo_in;
 130
 131         return 0;
 132 }
 133
 134 static int pxa2xx_ac97_hw_aux_params(struct snd_pcm_substream *substream,
 135                                      struct snd_pcm_hw_params *params,
 136                                      struct snd_soc_dai *dai)
 137 {
 138         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 139         struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
 140
 141         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
 142                 cpu_dai->dma_data = &pxa2xx_ac97_pcm_aux_mono_out;
 143         else
 144                 cpu_dai->dma_data = &pxa2xx_ac97_pcm_aux_mono_in;
 145
 146         return 0;
 147 }
 148
 149 static int pxa2xx_ac97_hw_mic_params(struct snd_pcm_substream *substream,
 150                                      struct snd_pcm_hw_params *params,
 151                                      struct snd_soc_dai *dai)
 152 {
 153         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 154         struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
 155
 156         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
 157                 return -ENODEV;
 158         else
 159                 cpu_dai->dma_data = &pxa2xx_ac97_pcm_mic_mono_in;
 160
 161         return 0;
 162 }
 163
 164 #define PXA2XX_AC97_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
 165                 SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 | SNDRV_PCM_RATE_44100 | \
 166                 SNDRV_PCM_RATE_48000)
 167
 168 static struct snd_soc_dai_ops pxa_ac97_hifi_dai_ops = {
 169         .hw_params      = pxa2xx_ac97_hw_params,
 170 };
 171
 172 static struct snd_soc_dai_ops pxa_ac97_aux_dai_ops = {
 173         .hw_params      = pxa2xx_ac97_hw_aux_params,
 174 };
 175
 176 static struct snd_soc_dai_ops pxa_ac97_mic_dai_ops = {
 177         .hw_params      = pxa2xx_ac97_hw_mic_params,
 178 };
 179
 180 /*
 181  * There is only 1 physical AC97 interface for pxa2xx, but it
 182  * has extra fifo's that can be used for aux DACs and ADCs.
 183  */
 184 struct snd_soc_dai pxa_ac97_dai[] = {
 185 {
 186         .name = "pxa2xx-ac97",
 187         .id = 0,
 188         .ac97_control = 1,
 189         .probe = pxa2xx_ac97_probe,
 190         .remove = pxa2xx_ac97_remove,
 191         .suspend = pxa2xx_ac97_suspend,
 192         .resume = pxa2xx_ac97_resume,
 193         .playback = {
 194                 .stream_name = "AC97 Playback",
 195                 .channels_min = 2,
 196                 .channels_max = 2,
 197                 .rates = PXA2XX_AC97_RATES,
 198                 .formats = SNDRV_PCM_FMTBIT_S16_LE,},
 199         .capture = {
 200                 .stream_name = "AC97 Capture",
 201                 .channels_min = 2,
 202                 .channels_max = 2,
 203                 .rates = PXA2XX_AC97_RATES,
 204                 .formats = SNDRV_PCM_FMTBIT_S16_LE,},
 205         .ops = &pxa_ac97_hifi_dai_ops,
 206 },
 207 {
 208         .name = "pxa2xx-ac97-aux",
 209         .id = 1,
 210         .ac97_control = 1,
 211         .playback = {
 212                 .stream_name = "AC97 Aux Playback",
 213                 .channels_min = 1,
 214                 .channels_max = 1,
 215                 .rates = PXA2XX_AC97_RATES,
 216                 .formats = SNDRV_PCM_FMTBIT_S16_LE,},
 217         .capture = {
 218                 .stream_name = "AC97 Aux Capture",
 219                 .channels_min = 1,
 220                 .channels_max = 1,
 221                 .rates = PXA2XX_AC97_RATES,
 222                 .formats = SNDRV_PCM_FMTBIT_S16_LE,},
 223         .ops = &pxa_ac97_aux_dai_ops,
 224 },
 225 {
 226         .name = "pxa2xx-ac97-mic",
 227         .id = 2,
 228         .ac97_control = 1,
 229         .capture = {
 230                 .stream_name = "AC97 Mic Capture",
 231                 .channels_min = 1,
 232                 .channels_max = 1,
 233                 .rates = PXA2XX_AC97_RATES,
 234                 .formats = SNDRV_PCM_FMTBIT_S16_LE,},
 235         .ops = &pxa_ac97_mic_dai_ops,
 236 },
 237 };
 238
 239 EXPORT_SYMBOL_GPL(pxa_ac97_dai);
 240 EXPORT_SYMBOL_GPL(soc_ac97_ops);
 241
 242 static int __devinit pxa2xx_ac97_dev_probe(struct platform_device *pdev)
 243 {
 244         int i;
 245         pxa2xx_audio_ops_t *pdata = pdev->dev.platform_data;
 246
 247         if (pdev->id >= 0) {
 248                 dev_err(&pdev->dev, "PXA2xx has only one AC97 port.\n");
 249                 return -ENXIO;
 250         }
 251
 252         for (i = 0; i < ARRAY_SIZE(pxa_ac97_dai); i++) {
 253                 pxa_ac97_dai[i].dev = &pdev->dev;
 254                 if (pdata && pdata->codec_pdata[0])
 255                         pxa_ac97_dai[i].ac97_pdata = pdata->codec_pdata[0];
 256         }
 257
 258         /* Punt most of the init to the SoC probe; we may need the machine
 259          * driver to do interesting things with the clocking to get us up
 260          * and running.
 261          */
 262         return snd_soc_register_dais(pxa_ac97_dai, ARRAY_SIZE(pxa_ac97_dai));
 263 }
 264
 265 static int __devexit pxa2xx_ac97_dev_remove(struct platform_device *pdev)
 266 {
 267         snd_soc_unregister_dais(pxa_ac97_dai, ARRAY_SIZE(pxa_ac97_dai));
 268
 269         return 0;
 270 }
 271
 272 static struct platform_driver pxa2xx_ac97_driver = {
 273         .probe          = pxa2xx_ac97_dev_probe,
 274         .remove         = __devexit_p(pxa2xx_ac97_dev_remove),
 275         .driver         = {
 276                 .name   = "pxa2xx-ac97",
 277                 .owner  = THIS_MODULE,
 278         },
 279 };
 280
 281 static int __init pxa_ac97_init(void)
 282 {
 283         return platform_driver_register(&pxa2xx_ac97_driver);
 284 }
 285 module_init(pxa_ac97_init);
 286
 287 static void __exit pxa_ac97_exit(void)
 288 {
 289         platform_driver_unregister(&pxa2xx_ac97_driver);
 290 }
 291 module_exit(pxa_ac97_exit);
 292
 293 MODULE_AUTHOR("Nicolas Pitre");
 294 MODULE_DESCRIPTION("AC97 driver for the Intel PXA2xx chip");
 295 MODULE_LICENSE("GPL");