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 #include <mach/regs-ac97.h>
  25
  26 #include "pxa2xx-pcm.h"
  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 platform_device *pdev,
  92         struct snd_soc_dai *dai)
  93 {
  94         return pxa2xx_ac97_hw_suspend();
  95 }
  96
  97 static int pxa2xx_ac97_resume(struct platform_device *pdev,
  98         struct snd_soc_dai *dai)
  99 {
 100         return pxa2xx_ac97_hw_resume();
 101 }
 102
 103 #else
 104 #define pxa2xx_ac97_suspend     NULL
 105 #define pxa2xx_ac97_resume      NULL
 106 #endif
 107
 108 static int pxa2xx_ac97_probe(struct platform_device *pdev,
 109                              struct snd_soc_dai *dai)
 110 {
 111         return pxa2xx_ac97_hw_probe(pdev);
 112 }
 113
 114 static void pxa2xx_ac97_remove(struct platform_device *pdev,
 115                                struct snd_soc_dai *dai)
 116 {
 117         pxa2xx_ac97_hw_remove(pdev);
 118 }
 119
 120 static int pxa2xx_ac97_hw_params(struct snd_pcm_substream *substream,
 121                                 struct snd_pcm_hw_params *params)
 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 {
 137         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 138         struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
 139
 140         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
 141                 cpu_dai->dma_data = &pxa2xx_ac97_pcm_aux_mono_out;
 142         else
 143                 cpu_dai->dma_data = &pxa2xx_ac97_pcm_aux_mono_in;
 144
 145         return 0;
 146 }
 147
 148 static int pxa2xx_ac97_hw_mic_params(struct snd_pcm_substream *substream,
 149         struct snd_pcm_hw_params *params)
 150 {
 151         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 152         struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
 153
 154         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
 155                 return -ENODEV;
 156         else
 157                 cpu_dai->dma_data = &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 /*
 167  * There is only 1 physical AC97 interface for pxa2xx, but it
 168  * has extra fifo's that can be used for aux DACs and ADCs.
 169  */
 170 struct snd_soc_dai pxa_ac97_dai[] = {
 171 {
 172         .name = "pxa2xx-ac97",
 173         .id = 0,
 174         .type = SND_SOC_DAI_AC97,
 175         .probe = pxa2xx_ac97_probe,
 176         .remove = pxa2xx_ac97_remove,
 177         .suspend = pxa2xx_ac97_suspend,
 178         .resume = pxa2xx_ac97_resume,
 179         .playback = {
 180                 .stream_name = "AC97 Playback",
 181                 .channels_min = 2,
 182                 .channels_max = 2,
 183                 .rates = PXA2XX_AC97_RATES,
 184                 .formats = SNDRV_PCM_FMTBIT_S16_LE,},
 185         .capture = {
 186                 .stream_name = "AC97 Capture",
 187                 .channels_min = 2,
 188                 .channels_max = 2,
 189                 .rates = PXA2XX_AC97_RATES,
 190                 .formats = SNDRV_PCM_FMTBIT_S16_LE,},
 191         .ops = {
 192                 .hw_params = pxa2xx_ac97_hw_params,},
 193 },
 194 {
 195         .name = "pxa2xx-ac97-aux",
 196         .id = 1,
 197         .type = SND_SOC_DAI_AC97,
 198         .playback = {
 199                 .stream_name = "AC97 Aux Playback",
 200                 .channels_min = 1,
 201                 .channels_max = 1,
 202                 .rates = PXA2XX_AC97_RATES,
 203                 .formats = SNDRV_PCM_FMTBIT_S16_LE,},
 204         .capture = {
 205                 .stream_name = "AC97 Aux Capture",
 206                 .channels_min = 1,
 207                 .channels_max = 1,
 208                 .rates = PXA2XX_AC97_RATES,
 209                 .formats = SNDRV_PCM_FMTBIT_S16_LE,},
 210         .ops = {
 211                 .hw_params = pxa2xx_ac97_hw_aux_params,},
 212 },
 213 {
 214         .name = "pxa2xx-ac97-mic",
 215         .id = 2,
 216         .type = SND_SOC_DAI_AC97,
 217         .capture = {
 218                 .stream_name = "AC97 Mic Capture",
 219                 .channels_min = 1,
 220                 .channels_max = 1,
 221                 .rates = PXA2XX_AC97_RATES,
 222                 .formats = SNDRV_PCM_FMTBIT_S16_LE,},
 223         .ops = {
 224                 .hw_params = pxa2xx_ac97_hw_mic_params,},
 225 },
 226 };
 227
 228 EXPORT_SYMBOL_GPL(pxa_ac97_dai);
 229 EXPORT_SYMBOL_GPL(soc_ac97_ops);
 230
 231 MODULE_AUTHOR("Nicolas Pitre");
 232 MODULE_DESCRIPTION("AC97 driver for the Intel PXA2xx chip");
 233 MODULE_LICENSE("GPL");