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 struct pxa2xx_pcm_dma_params *dma_data; 126 127 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) 128 dma_data = &pxa2xx_ac97_pcm_stereo_out; 129 else 130 dma_data = &pxa2xx_ac97_pcm_stereo_in; 131 132 snd_soc_dai_set_dma_data(cpu_dai, substream, dma_data); 133 134 return 0; 135 } 136 137 static int pxa2xx_ac97_hw_aux_params(struct snd_pcm_substream *substream, 138 struct snd_pcm_hw_params *params, 139 struct snd_soc_dai *dai) 140 { 141 struct snd_soc_pcm_runtime *rtd = substream->private_data; 142 struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai; 143 struct pxa2xx_pcm_dma_params *dma_data; 144 145 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) 146 dma_data = &pxa2xx_ac97_pcm_aux_mono_out; 147 else 148 dma_data = &pxa2xx_ac97_pcm_aux_mono_in; 149 150 snd_soc_dai_set_dma_data(cpu_dai, substream, dma_data); 151 152 return 0; 153 } 154 155 static int pxa2xx_ac97_hw_mic_params(struct snd_pcm_substream *substream, 156 struct snd_pcm_hw_params *params, 157 struct snd_soc_dai *dai) 158 { 159 struct snd_soc_pcm_runtime *rtd = substream->private_data; 160 struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai; 161 162 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) 163 return -ENODEV; 164 else 165 snd_soc_dai_set_dma_data(cpu_dai, substream, 166 &pxa2xx_ac97_pcm_mic_mono_in); 167 168 return 0; 169 } 170 171 #define PXA2XX_AC97_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\ 172 SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 | SNDRV_PCM_RATE_44100 | \ 173 SNDRV_PCM_RATE_48000) 174 175 static struct snd_soc_dai_ops pxa_ac97_hifi_dai_ops = { 176 .hw_params = pxa2xx_ac97_hw_params, 177 }; 178 179 static struct snd_soc_dai_ops pxa_ac97_aux_dai_ops = { 180 .hw_params = pxa2xx_ac97_hw_aux_params, 181 }; 182 183 static struct snd_soc_dai_ops pxa_ac97_mic_dai_ops = { 184 .hw_params = pxa2xx_ac97_hw_mic_params, 185 }; 186 187 /* 188 * There is only 1 physical AC97 interface for pxa2xx, but it 189 * has extra fifo's that can be used for aux DACs and ADCs. 190 */ 191 struct snd_soc_dai pxa_ac97_dai[] = { 192 { 193 .name = "pxa2xx-ac97", 194 .id = 0, 195 .ac97_control = 1, 196 .probe = pxa2xx_ac97_probe, 197 .remove = pxa2xx_ac97_remove, 198 .suspend = pxa2xx_ac97_suspend, 199 .resume = pxa2xx_ac97_resume, 200 .playback = { 201 .stream_name = "AC97 Playback", 202 .channels_min = 2, 203 .channels_max = 2, 204 .rates = PXA2XX_AC97_RATES, 205 .formats = SNDRV_PCM_FMTBIT_S16_LE,}, 206 .capture = { 207 .stream_name = "AC97 Capture", 208 .channels_min = 2, 209 .channels_max = 2, 210 .rates = PXA2XX_AC97_RATES, 211 .formats = SNDRV_PCM_FMTBIT_S16_LE,}, 212 .ops = &pxa_ac97_hifi_dai_ops, 213 }, 214 { 215 .name = "pxa2xx-ac97-aux", 216 .id = 1, 217 .ac97_control = 1, 218 .playback = { 219 .stream_name = "AC97 Aux Playback", 220 .channels_min = 1, 221 .channels_max = 1, 222 .rates = PXA2XX_AC97_RATES, 223 .formats = SNDRV_PCM_FMTBIT_S16_LE,}, 224 .capture = { 225 .stream_name = "AC97 Aux Capture", 226 .channels_min = 1, 227 .channels_max = 1, 228 .rates = PXA2XX_AC97_RATES, 229 .formats = SNDRV_PCM_FMTBIT_S16_LE,}, 230 .ops = &pxa_ac97_aux_dai_ops, 231 }, 232 { 233 .name = "pxa2xx-ac97-mic", 234 .id = 2, 235 .ac97_control = 1, 236 .capture = { 237 .stream_name = "AC97 Mic Capture", 238 .channels_min = 1, 239 .channels_max = 1, 240 .rates = PXA2XX_AC97_RATES, 241 .formats = SNDRV_PCM_FMTBIT_S16_LE,}, 242 .ops = &pxa_ac97_mic_dai_ops, 243 }, 244 }; 245 246 EXPORT_SYMBOL_GPL(pxa_ac97_dai); 247 EXPORT_SYMBOL_GPL(soc_ac97_ops); 248 249 static int __devinit pxa2xx_ac97_dev_probe(struct platform_device *pdev) 250 { 251 int i; 252 pxa2xx_audio_ops_t *pdata = pdev->dev.platform_data; 253 254 if (pdev->id >= 0) { 255 dev_err(&pdev->dev, "PXA2xx has only one AC97 port.\n"); 256 return -ENXIO; 257 } 258 259 for (i = 0; i < ARRAY_SIZE(pxa_ac97_dai); i++) { 260 pxa_ac97_dai[i].dev = &pdev->dev; 261 if (pdata && pdata->codec_pdata[0]) 262 pxa_ac97_dai[i].ac97_pdata = pdata->codec_pdata[0]; 263 } 264 265 /* Punt most of the init to the SoC probe; we may need the machine 266 * driver to do interesting things with the clocking to get us up 267 * and running. 268 */ 269 return snd_soc_register_dais(pxa_ac97_dai, ARRAY_SIZE(pxa_ac97_dai)); 270 } 271 272 static int __devexit pxa2xx_ac97_dev_remove(struct platform_device *pdev) 273 { 274 snd_soc_unregister_dais(pxa_ac97_dai, ARRAY_SIZE(pxa_ac97_dai)); 275 276 return 0; 277 } 278 279 static struct platform_driver pxa2xx_ac97_driver = { 280 .probe = pxa2xx_ac97_dev_probe, 281 .remove = __devexit_p(pxa2xx_ac97_dev_remove), 282 .driver = { 283 .name = "pxa2xx-ac97", 284 .owner = THIS_MODULE, 285 }, 286 }; 287 288 static int __init pxa_ac97_init(void) 289 { 290 return platform_driver_register(&pxa2xx_ac97_driver); 291 } 292 module_init(pxa_ac97_init); 293 294 static void __exit pxa_ac97_exit(void) 295 { 296 platform_driver_unregister(&pxa2xx_ac97_driver); 297 } 298 module_exit(pxa_ac97_exit); 299 300 MODULE_AUTHOR("Nicolas Pitre"); 301 MODULE_DESCRIPTION("AC97 driver for the Intel PXA2xx chip"); 302 MODULE_LICENSE("GPL"); 303