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