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 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 snd_soc_dai *dai) 92 { 93 return pxa2xx_ac97_hw_suspend(); 94 } 95 96 static int pxa2xx_ac97_resume(struct snd_soc_dai *dai) 97 { 98 return pxa2xx_ac97_hw_resume(); 99 } 100 101 #else 102 #define pxa2xx_ac97_suspend NULL 103 #define pxa2xx_ac97_resume NULL 104 #endif 105 106 static int pxa2xx_ac97_probe(struct platform_device *pdev, 107 struct snd_soc_dai *dai) 108 { 109 return pxa2xx_ac97_hw_probe(to_platform_device(dai->dev)); 110 } 111 112 static void pxa2xx_ac97_remove(struct platform_device *pdev, 113 struct snd_soc_dai *dai) 114 { 115 pxa2xx_ac97_hw_remove(to_platform_device(dai->dev)); 116 } 117 118 static int pxa2xx_ac97_hw_params(struct snd_pcm_substream *substream, 119 struct snd_pcm_hw_params *params, 120 struct snd_soc_dai *dai) 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 struct snd_soc_dai *dai) 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 struct snd_soc_dai *dai) 151 { 152 struct snd_soc_pcm_runtime *rtd = substream->private_data; 153 struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai; 154 155 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) 156 return -ENODEV; 157 else 158 cpu_dai->dma_data = &pxa2xx_ac97_pcm_mic_mono_in; 159 160 return 0; 161 } 162 163 #define PXA2XX_AC97_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\ 164 SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 | SNDRV_PCM_RATE_44100 | \ 165 SNDRV_PCM_RATE_48000) 166 167 static struct snd_soc_dai_ops pxa_ac97_hifi_dai_ops = { 168 .hw_params = pxa2xx_ac97_hw_params, 169 }; 170 171 static struct snd_soc_dai_ops pxa_ac97_aux_dai_ops = { 172 .hw_params = pxa2xx_ac97_hw_aux_params, 173 }; 174 175 static struct snd_soc_dai_ops pxa_ac97_mic_dai_ops = { 176 .hw_params = pxa2xx_ac97_hw_mic_params, 177 }; 178 179 /* 180 * There is only 1 physical AC97 interface for pxa2xx, but it 181 * has extra fifo's that can be used for aux DACs and ADCs. 182 */ 183 struct snd_soc_dai pxa_ac97_dai[] = { 184 { 185 .name = "pxa2xx-ac97", 186 .id = 0, 187 .ac97_control = 1, 188 .probe = pxa2xx_ac97_probe, 189 .remove = pxa2xx_ac97_remove, 190 .suspend = pxa2xx_ac97_suspend, 191 .resume = pxa2xx_ac97_resume, 192 .playback = { 193 .stream_name = "AC97 Playback", 194 .channels_min = 2, 195 .channels_max = 2, 196 .rates = PXA2XX_AC97_RATES, 197 .formats = SNDRV_PCM_FMTBIT_S16_LE,}, 198 .capture = { 199 .stream_name = "AC97 Capture", 200 .channels_min = 2, 201 .channels_max = 2, 202 .rates = PXA2XX_AC97_RATES, 203 .formats = SNDRV_PCM_FMTBIT_S16_LE,}, 204 .ops = &pxa_ac97_hifi_dai_ops, 205 }, 206 { 207 .name = "pxa2xx-ac97-aux", 208 .id = 1, 209 .ac97_control = 1, 210 .playback = { 211 .stream_name = "AC97 Aux Playback", 212 .channels_min = 1, 213 .channels_max = 1, 214 .rates = PXA2XX_AC97_RATES, 215 .formats = SNDRV_PCM_FMTBIT_S16_LE,}, 216 .capture = { 217 .stream_name = "AC97 Aux Capture", 218 .channels_min = 1, 219 .channels_max = 1, 220 .rates = PXA2XX_AC97_RATES, 221 .formats = SNDRV_PCM_FMTBIT_S16_LE,}, 222 .ops = &pxa_ac97_aux_dai_ops, 223 }, 224 { 225 .name = "pxa2xx-ac97-mic", 226 .id = 2, 227 .ac97_control = 1, 228 .capture = { 229 .stream_name = "AC97 Mic Capture", 230 .channels_min = 1, 231 .channels_max = 1, 232 .rates = PXA2XX_AC97_RATES, 233 .formats = SNDRV_PCM_FMTBIT_S16_LE,}, 234 .ops = &pxa_ac97_mic_dai_ops, 235 }, 236 }; 237 238 EXPORT_SYMBOL_GPL(pxa_ac97_dai); 239 EXPORT_SYMBOL_GPL(soc_ac97_ops); 240 241 static int __devinit pxa2xx_ac97_dev_probe(struct platform_device *pdev) 242 { 243 int i; 244 245 for (i = 0; i < ARRAY_SIZE(pxa_ac97_dai); i++) 246 pxa_ac97_dai[i].dev = &pdev->dev; 247 248 /* Punt most of the init to the SoC probe; we may need the machine 249 * driver to do interesting things with the clocking to get us up 250 * and running. 251 */ 252 return snd_soc_register_dais(pxa_ac97_dai, ARRAY_SIZE(pxa_ac97_dai)); 253 } 254 255 static int __devexit pxa2xx_ac97_dev_remove(struct platform_device *pdev) 256 { 257 snd_soc_unregister_dais(pxa_ac97_dai, ARRAY_SIZE(pxa_ac97_dai)); 258 259 return 0; 260 } 261 262 static struct platform_driver pxa2xx_ac97_driver = { 263 .probe = pxa2xx_ac97_dev_probe, 264 .remove = __devexit_p(pxa2xx_ac97_dev_remove), 265 .driver = { 266 .name = "pxa2xx-ac97", 267 .owner = THIS_MODULE, 268 }, 269 }; 270 271 static int __init pxa_ac97_init(void) 272 { 273 return platform_driver_register(&pxa2xx_ac97_driver); 274 } 275 module_init(pxa_ac97_init); 276 277 static void __exit pxa_ac97_exit(void) 278 { 279 platform_driver_unregister(&pxa2xx_ac97_driver); 280 } 281 module_exit(pxa_ac97_exit); 282 283 MODULE_AUTHOR("Nicolas Pitre"); 284 MODULE_DESCRIPTION("AC97 driver for the Intel PXA2xx chip"); 285 MODULE_LICENSE("GPL"); 286