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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 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 {
 122         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 123         struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
 124
 125         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
 126                 cpu_dai->dma_data = &pxa2xx_ac97_pcm_stereo_out;
 127         else
 128                 cpu_dai->dma_data = &pxa2xx_ac97_pcm_stereo_in;
 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 {
 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 {
 150         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 151         struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
 152
 153         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
 154                 return -ENODEV;
 155         else
 156                 cpu_dai->dma_data = &pxa2xx_ac97_pcm_mic_mono_in;
 157
 158         return 0;
 159 }
 160
 161 #define PXA2XX_AC97_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
 162                 SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 | SNDRV_PCM_RATE_44100 | \
 163                 SNDRV_PCM_RATE_48000)
 164
 165 /*
 166  * There is only 1 physical AC97 interface for pxa2xx, but it
 167  * has extra fifo's that can be used for aux DACs and ADCs.
 168  */
 169 struct snd_soc_dai pxa_ac97_dai[] = {
 170 {
 171         .name = "pxa2xx-ac97",
 172         .id = 0,
 173         .type = SND_SOC_DAI_AC97,
 174         .probe = pxa2xx_ac97_probe,
 175         .remove = pxa2xx_ac97_remove,
 176         .suspend = pxa2xx_ac97_suspend,
 177         .resume = pxa2xx_ac97_resume,
 178         .playback = {
 179                 .stream_name = "AC97 Playback",
 180                 .channels_min = 2,
 181                 .channels_max = 2,
 182                 .rates = PXA2XX_AC97_RATES,
 183                 .formats = SNDRV_PCM_FMTBIT_S16_LE,},
 184         .capture = {
 185                 .stream_name = "AC97 Capture",
 186                 .channels_min = 2,
 187                 .channels_max = 2,
 188                 .rates = PXA2XX_AC97_RATES,
 189                 .formats = SNDRV_PCM_FMTBIT_S16_LE,},
 190         .ops = {
 191                 .hw_params = pxa2xx_ac97_hw_params,},
 192 },
 193 {
 194         .name = "pxa2xx-ac97-aux",
 195         .id = 1,
 196         .type = SND_SOC_DAI_AC97,
 197         .playback = {
 198                 .stream_name = "AC97 Aux Playback",
 199                 .channels_min = 1,
 200                 .channels_max = 1,
 201                 .rates = PXA2XX_AC97_RATES,
 202                 .formats = SNDRV_PCM_FMTBIT_S16_LE,},
 203         .capture = {
 204                 .stream_name = "AC97 Aux Capture",
 205                 .channels_min = 1,
 206                 .channels_max = 1,
 207                 .rates = PXA2XX_AC97_RATES,
 208                 .formats = SNDRV_PCM_FMTBIT_S16_LE,},
 209         .ops = {
 210                 .hw_params = pxa2xx_ac97_hw_aux_params,},
 211 },
 212 {
 213         .name = "pxa2xx-ac97-mic",
 214         .id = 2,
 215         .type = SND_SOC_DAI_AC97,
 216         .capture = {
 217                 .stream_name = "AC97 Mic Capture",
 218                 .channels_min = 1,
 219                 .channels_max = 1,
 220                 .rates = PXA2XX_AC97_RATES,
 221                 .formats = SNDRV_PCM_FMTBIT_S16_LE,},
 222         .ops = {
 223                 .hw_params = pxa2xx_ac97_hw_mic_params,},
 224 },
 225 };
 226
 227 EXPORT_SYMBOL_GPL(pxa_ac97_dai);
 228 EXPORT_SYMBOL_GPL(soc_ac97_ops);
 229
 230 MODULE_AUTHOR("Nicolas Pitre");
 231 MODULE_DESCRIPTION("AC97 driver for the Intel PXA2xx chip");
 232 MODULE_LICENSE("GPL");