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 snd_soc_dai *dai)
 108 {
 109         return pxa2xx_ac97_hw_probe(to_platform_device(dai->dev));
 110 }
 111
 112 static int pxa2xx_ac97_remove(struct snd_soc_dai *dai)
 113 {
 114         pxa2xx_ac97_hw_remove(to_platform_device(dai->dev));
 115         return 0;
 116 }
 117
 118 static int pxa2xx_ac97_hw_params(struct snd_pcm_substream *substream,
 119                                  struct snd_pcm_hw_params *params,
 120                                  struct snd_soc_dai *cpu_dai)
 121 {
 122         struct pxa2xx_pcm_dma_params *dma_data;
 123
 124         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
 125                 dma_data = &pxa2xx_ac97_pcm_stereo_out;
 126         else
 127                 dma_data = &pxa2xx_ac97_pcm_stereo_in;
 128
 129         snd_soc_dai_set_dma_data(cpu_dai, substream, dma_data);
 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 *cpu_dai)
 137 {
 138         struct pxa2xx_pcm_dma_params *dma_data;
 139
 140         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
 141                 dma_data = &pxa2xx_ac97_pcm_aux_mono_out;
 142         else
 143                 dma_data = &pxa2xx_ac97_pcm_aux_mono_in;
 144
 145         snd_soc_dai_set_dma_data(cpu_dai, substream, dma_data);
 146
 147         return 0;
 148 }
 149
 150 static int pxa2xx_ac97_hw_mic_params(struct snd_pcm_substream *substream,
 151                                      struct snd_pcm_hw_params *params,
 152                                      struct snd_soc_dai *cpu_dai)
 153 {
 154         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
 155                 return -ENODEV;
 156         else
 157                 snd_soc_dai_set_dma_data(cpu_dai, substream,
 158                                          &pxa2xx_ac97_pcm_mic_mono_in);
 159
 160         return 0;
 161 }
 162
 163 #define PXA2XX_AC97_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
 164                 SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 | SNDRV_PCM_RATE_44100 | \
 165                 SNDRV_PCM_RATE_48000)
 166
 167 static struct snd_soc_dai_ops pxa_ac97_hifi_dai_ops = {
 168         .hw_params      = pxa2xx_ac97_hw_params,
 169 };
 170
 171 static struct snd_soc_dai_ops pxa_ac97_aux_dai_ops = {
 172         .hw_params      = pxa2xx_ac97_hw_aux_params,
 173 };
 174
 175 static struct snd_soc_dai_ops pxa_ac97_mic_dai_ops = {
 176         .hw_params      = pxa2xx_ac97_hw_mic_params,
 177 };
 178
 179 /*
 180  * There is only 1 physical AC97 interface for pxa2xx, but it
 181  * has extra fifo's that can be used for aux DACs and ADCs.
 182  */
 183 static struct snd_soc_dai_driver pxa_ac97_dai[] = {
 184 {
 185         .name = "pxa2xx-ac97",
 186         .ac97_control = 1,
 187         .probe = pxa2xx_ac97_probe,
 188         .remove = pxa2xx_ac97_remove,
 189         .suspend = pxa2xx_ac97_suspend,
 190         .resume = pxa2xx_ac97_resume,
 191         .playback = {
 192                 .stream_name = "AC97 Playback",
 193                 .channels_min = 2,
 194                 .channels_max = 2,
 195                 .rates = PXA2XX_AC97_RATES,
 196                 .formats = SNDRV_PCM_FMTBIT_S16_LE,},
 197         .capture = {
 198                 .stream_name = "AC97 Capture",
 199                 .channels_min = 2,
 200                 .channels_max = 2,
 201                 .rates = PXA2XX_AC97_RATES,
 202                 .formats = SNDRV_PCM_FMTBIT_S16_LE,},
 203         .ops = &pxa_ac97_hifi_dai_ops,
 204 },
 205 {
 206         .name = "pxa2xx-ac97-aux",
 207         .ac97_control = 1,
 208         .playback = {
 209                 .stream_name = "AC97 Aux Playback",
 210                 .channels_min = 1,
 211                 .channels_max = 1,
 212                 .rates = PXA2XX_AC97_RATES,
 213                 .formats = SNDRV_PCM_FMTBIT_S16_LE,},
 214         .capture = {
 215                 .stream_name = "AC97 Aux Capture",
 216                 .channels_min = 1,
 217                 .channels_max = 1,
 218                 .rates = PXA2XX_AC97_RATES,
 219                 .formats = SNDRV_PCM_FMTBIT_S16_LE,},
 220         .ops = &pxa_ac97_aux_dai_ops,
 221 },
 222 {
 223         .name = "pxa2xx-ac97-mic",
 224         .ac97_control = 1,
 225         .capture = {
 226                 .stream_name = "AC97 Mic Capture",
 227                 .channels_min = 1,
 228                 .channels_max = 1,
 229                 .rates = PXA2XX_AC97_RATES,
 230                 .formats = SNDRV_PCM_FMTBIT_S16_LE,},
 231         .ops = &pxa_ac97_mic_dai_ops,
 232 },
 233 };
 234
 235 EXPORT_SYMBOL_GPL(soc_ac97_ops);
 236
 237 static __devinit int pxa2xx_ac97_dev_probe(struct platform_device *pdev)
 238 {
 239         if (pdev->id != -1) {
 240                 dev_err(&pdev->dev, "PXA2xx has only one AC97 port.\n");
 241                 return -ENXIO;
 242         }
 243
 244         /* Punt most of the init to the SoC probe; we may need the machine
 245          * driver to do interesting things with the clocking to get us up
 246          * and running.
 247          */
 248         return snd_soc_register_dais(&pdev->dev, pxa_ac97_dai,
 249                         ARRAY_SIZE(pxa_ac97_dai));
 250 }
 251
 252 static int __devexit pxa2xx_ac97_dev_remove(struct platform_device *pdev)
 253 {
 254         snd_soc_unregister_dais(&pdev->dev, ARRAY_SIZE(pxa_ac97_dai));
 255         return 0;
 256 }
 257
 258 static struct platform_driver pxa2xx_ac97_driver = {
 259         .probe          = pxa2xx_ac97_dev_probe,
 260         .remove         = __devexit_p(pxa2xx_ac97_dev_remove),
 261         .driver         = {
 262                 .name   = "pxa2xx-ac97",
 263                 .owner  = THIS_MODULE,
 264         },
 265 };
 266
 267 static int __init pxa_ac97_init(void)
 268 {
 269         return platform_driver_register(&pxa2xx_ac97_driver);
 270 }
 271 module_init(pxa_ac97_init);
 272
 273 static void __exit pxa_ac97_exit(void)
 274 {
 275         platform_driver_unregister(&pxa2xx_ac97_driver);
 276 }
 277 module_exit(pxa_ac97_exit);
 278
 279 MODULE_AUTHOR("Nicolas Pitre");
 280 MODULE_DESCRIPTION("AC97 driver for the Intel PXA2xx chip");
 281 MODULE_LICENSE("GPL");