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 platform_device *pdev, 108 struct snd_soc_dai *dai) 109 { 110 return pxa2xx_ac97_hw_probe(to_platform_device(dai->dev)); 111 } 112 113 static void pxa2xx_ac97_remove(struct platform_device *pdev, 114 struct snd_soc_dai *dai) 115 { 116 pxa2xx_ac97_hw_remove(to_platform_device(dai->dev)); 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 static struct snd_soc_dai_ops pxa_ac97_hifi_dai_ops = { 169 .hw_params = pxa2xx_ac97_hw_params, 170 }; 171 172 static struct snd_soc_dai_ops pxa_ac97_aux_dai_ops = { 173 .hw_params = pxa2xx_ac97_hw_aux_params, 174 }; 175 176 static struct snd_soc_dai_ops pxa_ac97_mic_dai_ops = { 177 .hw_params = pxa2xx_ac97_hw_mic_params, 178 }; 179 180 /* 181 * There is only 1 physical AC97 interface for pxa2xx, but it 182 * has extra fifo's that can be used for aux DACs and ADCs. 183 */ 184 struct snd_soc_dai pxa_ac97_dai[] = { 185 { 186 .name = "pxa2xx-ac97", 187 .id = 0, 188 .ac97_control = 1, 189 .probe = pxa2xx_ac97_probe, 190 .remove = pxa2xx_ac97_remove, 191 .suspend = pxa2xx_ac97_suspend, 192 .resume = pxa2xx_ac97_resume, 193 .playback = { 194 .stream_name = "AC97 Playback", 195 .channels_min = 2, 196 .channels_max = 2, 197 .rates = PXA2XX_AC97_RATES, 198 .formats = SNDRV_PCM_FMTBIT_S16_LE,}, 199 .capture = { 200 .stream_name = "AC97 Capture", 201 .channels_min = 2, 202 .channels_max = 2, 203 .rates = PXA2XX_AC97_RATES, 204 .formats = SNDRV_PCM_FMTBIT_S16_LE,}, 205 .ops = &pxa_ac97_hifi_dai_ops, 206 }, 207 { 208 .name = "pxa2xx-ac97-aux", 209 .id = 1, 210 .ac97_control = 1, 211 .playback = { 212 .stream_name = "AC97 Aux Playback", 213 .channels_min = 1, 214 .channels_max = 1, 215 .rates = PXA2XX_AC97_RATES, 216 .formats = SNDRV_PCM_FMTBIT_S16_LE,}, 217 .capture = { 218 .stream_name = "AC97 Aux Capture", 219 .channels_min = 1, 220 .channels_max = 1, 221 .rates = PXA2XX_AC97_RATES, 222 .formats = SNDRV_PCM_FMTBIT_S16_LE,}, 223 .ops = &pxa_ac97_aux_dai_ops, 224 }, 225 { 226 .name = "pxa2xx-ac97-mic", 227 .id = 2, 228 .ac97_control = 1, 229 .capture = { 230 .stream_name = "AC97 Mic Capture", 231 .channels_min = 1, 232 .channels_max = 1, 233 .rates = PXA2XX_AC97_RATES, 234 .formats = SNDRV_PCM_FMTBIT_S16_LE,}, 235 .ops = &pxa_ac97_mic_dai_ops, 236 }, 237 }; 238 239 EXPORT_SYMBOL_GPL(pxa_ac97_dai); 240 EXPORT_SYMBOL_GPL(soc_ac97_ops); 241 242 static int __devinit pxa2xx_ac97_dev_probe(struct platform_device *pdev) 243 { 244 int i; 245 pxa2xx_audio_ops_t *pdata = pdev->dev.platform_data; 246 247 if (pdev->id >= 0) { 248 dev_err(&pdev->dev, "PXA2xx has only one AC97 port.\n"); 249 return -ENXIO; 250 } 251 252 for (i = 0; i < ARRAY_SIZE(pxa_ac97_dai); i++) { 253 pxa_ac97_dai[i].dev = &pdev->dev; 254 if (pdata && pdata->codec_pdata[0]) 255 pxa_ac97_dai[i].ac97_pdata = pdata->codec_pdata[0]; 256 } 257 258 /* Punt most of the init to the SoC probe; we may need the machine 259 * driver to do interesting things with the clocking to get us up 260 * and running. 261 */ 262 return snd_soc_register_dais(pxa_ac97_dai, ARRAY_SIZE(pxa_ac97_dai)); 263 } 264 265 static int __devexit pxa2xx_ac97_dev_remove(struct platform_device *pdev) 266 { 267 snd_soc_unregister_dais(pxa_ac97_dai, ARRAY_SIZE(pxa_ac97_dai)); 268 269 return 0; 270 } 271 272 static struct platform_driver pxa2xx_ac97_driver = { 273 .probe = pxa2xx_ac97_dev_probe, 274 .remove = __devexit_p(pxa2xx_ac97_dev_remove), 275 .driver = { 276 .name = "pxa2xx-ac97", 277 .owner = THIS_MODULE, 278 }, 279 }; 280 281 static int __init pxa_ac97_init(void) 282 { 283 return platform_driver_register(&pxa2xx_ac97_driver); 284 } 285 module_init(pxa_ac97_init); 286 287 static void __exit pxa_ac97_exit(void) 288 { 289 platform_driver_unregister(&pxa2xx_ac97_driver); 290 } 291 module_exit(pxa_ac97_exit); 292 293 MODULE_AUTHOR("Nicolas Pitre"); 294 MODULE_DESCRIPTION("AC97 driver for the Intel PXA2xx chip"); 295 MODULE_LICENSE("GPL"); 296