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   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 snd_soc_dai *dai)
  91 {
  92         return pxa2xx_ac97_hw_suspend();
  93 }
  94
  95 static int pxa2xx_ac97_resume(struct snd_soc_dai *dai)
  96 {
  97         return pxa2xx_ac97_hw_resume();
  98 }
  99
 100 #else
 101 #define pxa2xx_ac97_suspend     NULL
 102 #define pxa2xx_ac97_resume      NULL
 103 #endif
 104
 105 static int pxa2xx_ac97_probe(struct platform_device *pdev,
 106                              struct snd_soc_dai *dai)
 107 {
 108         return pxa2xx_ac97_hw_probe(pdev);
 109 }
 110
 111 static void pxa2xx_ac97_remove(struct platform_device *pdev,
 112                                struct snd_soc_dai *dai)
 113 {
 114         pxa2xx_ac97_hw_remove(pdev);
 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 *dai)
 120 {
 121         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 122         struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
 123
 124         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
 125                 cpu_dai->dma_data = &pxa2xx_ac97_pcm_stereo_out;
 126         else
 127                 cpu_dai->dma_data = &pxa2xx_ac97_pcm_stereo_in;
 128
 129         return 0;
 130 }
 131
 132 static int pxa2xx_ac97_hw_aux_params(struct snd_pcm_substream *substream,
 133                                      struct snd_pcm_hw_params *params,
 134                                      struct snd_soc_dai *dai)
 135 {
 136         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 137         struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
 138
 139         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
 140                 cpu_dai->dma_data = &pxa2xx_ac97_pcm_aux_mono_out;
 141         else
 142                 cpu_dai->dma_data = &pxa2xx_ac97_pcm_aux_mono_in;
 143
 144         return 0;
 145 }
 146
 147 static int pxa2xx_ac97_hw_mic_params(struct snd_pcm_substream *substream,
 148                                      struct snd_pcm_hw_params *params,
 149                                      struct snd_soc_dai *dai)
 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         .ac97_control = 1,
 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         .ac97_control = 1,
 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         .ac97_control = 1,
 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 static int __init pxa_ac97_init(void)
 232 {
 233         return snd_soc_register_dais(pxa_ac97_dai, ARRAY_SIZE(pxa_ac97_dai));
 234 }
 235 module_init(pxa_ac97_init);
 236
 237 static void __exit pxa_ac97_exit(void)
 238 {
 239         snd_soc_unregister_dais(pxa_ac97_dai, ARRAY_SIZE(pxa_ac97_dai));
 240 }
 241 module_exit(pxa_ac97_exit);
 242
 243 MODULE_AUTHOR("Nicolas Pitre");
 244 MODULE_DESCRIPTION("AC97 driver for the Intel PXA2xx chip");
 245 MODULE_LICENSE("GPL");