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/pxa-regs.h>
  24
  25 #include "pxa2xx-pcm.h"
  26 #include "pxa2xx-ac97.h"
  27
  28 static void pxa2xx_ac97_warm_reset(struct snd_ac97 *ac97)
  29 {
  30         pxa2xx_ac97_try_warm_reset(ac97);
  31
  32         pxa2xx_ac97_finish_reset(ac97);
  33 }
  34
  35 static void pxa2xx_ac97_cold_reset(struct snd_ac97 *ac97)
  36 {
  37         pxa2xx_ac97_try_cold_reset(ac97);
  38
  39         pxa2xx_ac97_finish_reset(ac97);
  40 }
  41
  42 struct snd_ac97_bus_ops soc_ac97_ops = {
  43         .read   = pxa2xx_ac97_read,
  44         .write  = pxa2xx_ac97_write,
  45         .warm_reset     = pxa2xx_ac97_warm_reset,
  46         .reset  = pxa2xx_ac97_cold_reset,
  47 };
  48
  49 static struct pxa2xx_pcm_dma_params pxa2xx_ac97_pcm_stereo_out = {
  50         .name                   = "AC97 PCM Stereo out",
  51         .dev_addr               = __PREG(PCDR),
  52         .drcmr                  = &DRCMR(12),
  53         .dcmd                   = DCMD_INCSRCADDR | DCMD_FLOWTRG |
  54                                   DCMD_BURST32 | DCMD_WIDTH4,
  55 };
  56
  57 static struct pxa2xx_pcm_dma_params pxa2xx_ac97_pcm_stereo_in = {
  58         .name                   = "AC97 PCM Stereo in",
  59         .dev_addr               = __PREG(PCDR),
  60         .drcmr                  = &DRCMR(11),
  61         .dcmd                   = DCMD_INCTRGADDR | DCMD_FLOWSRC |
  62                                   DCMD_BURST32 | DCMD_WIDTH4,
  63 };
  64
  65 static struct pxa2xx_pcm_dma_params pxa2xx_ac97_pcm_aux_mono_out = {
  66         .name                   = "AC97 Aux PCM (Slot 5) Mono out",
  67         .dev_addr               = __PREG(MODR),
  68         .drcmr                  = &DRCMR(10),
  69         .dcmd                   = DCMD_INCSRCADDR | DCMD_FLOWTRG |
  70                                   DCMD_BURST16 | DCMD_WIDTH2,
  71 };
  72
  73 static struct pxa2xx_pcm_dma_params pxa2xx_ac97_pcm_aux_mono_in = {
  74         .name                   = "AC97 Aux PCM (Slot 5) Mono in",
  75         .dev_addr               = __PREG(MODR),
  76         .drcmr                  = &DRCMR(9),
  77         .dcmd                   = DCMD_INCTRGADDR | DCMD_FLOWSRC |
  78                                   DCMD_BURST16 | DCMD_WIDTH2,
  79 };
  80
  81 static struct pxa2xx_pcm_dma_params pxa2xx_ac97_pcm_mic_mono_in = {
  82         .name                   = "AC97 Mic PCM (Slot 6) Mono in",
  83         .dev_addr               = __PREG(MCDR),
  84         .drcmr                  = &DRCMR(8),
  85         .dcmd                   = DCMD_INCTRGADDR | DCMD_FLOWSRC |
  86                                   DCMD_BURST16 | DCMD_WIDTH2,
  87 };
  88
  89 #ifdef CONFIG_PM
  90 static int pxa2xx_ac97_suspend(struct platform_device *pdev,
  91         struct snd_soc_dai *dai)
  92 {
  93         return pxa2xx_ac97_hw_suspend();
  94 }
  95
  96 static int pxa2xx_ac97_resume(struct platform_device *pdev,
  97         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(pdev);
 111 }
 112
 113 static void pxa2xx_ac97_remove(struct platform_device *pdev,
 114                                struct snd_soc_dai *dai)
 115 {
 116         pxa2xx_ac97_hw_remove(pdev);
 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 /*
 169  * There is only 1 physical AC97 interface for pxa2xx, but it
 170  * has extra fifo's that can be used for aux DACs and ADCs.
 171  */
 172 struct snd_soc_dai pxa_ac97_dai[] = {
 173 {
 174         .name = "pxa2xx-ac97",
 175         .id = 0,
 176         .type = SND_SOC_DAI_AC97,
 177         .probe = pxa2xx_ac97_probe,
 178         .remove = pxa2xx_ac97_remove,
 179         .suspend = pxa2xx_ac97_suspend,
 180         .resume = pxa2xx_ac97_resume,
 181         .playback = {
 182                 .stream_name = "AC97 Playback",
 183                 .channels_min = 2,
 184                 .channels_max = 2,
 185                 .rates = PXA2XX_AC97_RATES,
 186                 .formats = SNDRV_PCM_FMTBIT_S16_LE,},
 187         .capture = {
 188                 .stream_name = "AC97 Capture",
 189                 .channels_min = 2,
 190                 .channels_max = 2,
 191                 .rates = PXA2XX_AC97_RATES,
 192                 .formats = SNDRV_PCM_FMTBIT_S16_LE,},
 193         .ops = {
 194                 .hw_params = pxa2xx_ac97_hw_params,},
 195 },
 196 {
 197         .name = "pxa2xx-ac97-aux",
 198         .id = 1,
 199         .type = SND_SOC_DAI_AC97,
 200         .playback = {
 201                 .stream_name = "AC97 Aux Playback",
 202                 .channels_min = 1,
 203                 .channels_max = 1,
 204                 .rates = PXA2XX_AC97_RATES,
 205                 .formats = SNDRV_PCM_FMTBIT_S16_LE,},
 206         .capture = {
 207                 .stream_name = "AC97 Aux Capture",
 208                 .channels_min = 1,
 209                 .channels_max = 1,
 210                 .rates = PXA2XX_AC97_RATES,
 211                 .formats = SNDRV_PCM_FMTBIT_S16_LE,},
 212         .ops = {
 213                 .hw_params = pxa2xx_ac97_hw_aux_params,},
 214 },
 215 {
 216         .name = "pxa2xx-ac97-mic",
 217         .id = 2,
 218         .type = SND_SOC_DAI_AC97,
 219         .capture = {
 220                 .stream_name = "AC97 Mic Capture",
 221                 .channels_min = 1,
 222                 .channels_max = 1,
 223                 .rates = PXA2XX_AC97_RATES,
 224                 .formats = SNDRV_PCM_FMTBIT_S16_LE,},
 225         .ops = {
 226                 .hw_params = pxa2xx_ac97_hw_mic_params,},
 227 },
 228 };
 229
 230 EXPORT_SYMBOL_GPL(pxa_ac97_dai);
 231 EXPORT_SYMBOL_GPL(soc_ac97_ops);
 232
 233 MODULE_AUTHOR("Nicolas Pitre");
 234 MODULE_DESCRIPTION("AC97 driver for the Intel PXA2xx chip");
 235 MODULE_LICENSE("GPL");