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-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 snd_soc_dai *dai) 107 { 108 return pxa2xx_ac97_hw_probe(to_platform_device(dai->dev)); 109 } 110 111 static int pxa2xx_ac97_remove(struct snd_soc_dai *dai) 112 { 113 pxa2xx_ac97_hw_remove(to_platform_device(dai->dev)); 114 return 0; 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 *cpu_dai) 120 { 121 struct pxa2xx_pcm_dma_params *dma_data; 122 123 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) 124 dma_data = &pxa2xx_ac97_pcm_stereo_out; 125 else 126 dma_data = &pxa2xx_ac97_pcm_stereo_in; 127 128 snd_soc_dai_set_dma_data(cpu_dai, substream, dma_data); 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 *cpu_dai) 136 { 137 struct pxa2xx_pcm_dma_params *dma_data; 138 139 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) 140 dma_data = &pxa2xx_ac97_pcm_aux_mono_out; 141 else 142 dma_data = &pxa2xx_ac97_pcm_aux_mono_in; 143 144 snd_soc_dai_set_dma_data(cpu_dai, substream, dma_data); 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 *cpu_dai) 152 { 153 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) 154 return -ENODEV; 155 else 156 snd_soc_dai_set_dma_data(cpu_dai, substream, 157 &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 static struct snd_soc_dai_ops pxa_ac97_hifi_dai_ops = { 167 .hw_params = pxa2xx_ac97_hw_params, 168 }; 169 170 static struct snd_soc_dai_ops pxa_ac97_aux_dai_ops = { 171 .hw_params = pxa2xx_ac97_hw_aux_params, 172 }; 173 174 static struct snd_soc_dai_ops pxa_ac97_mic_dai_ops = { 175 .hw_params = pxa2xx_ac97_hw_mic_params, 176 }; 177 178 /* 179 * There is only 1 physical AC97 interface for pxa2xx, but it 180 * has extra fifo's that can be used for aux DACs and ADCs. 181 */ 182 static struct snd_soc_dai_driver pxa_ac97_dai[] = { 183 { 184 .name = "pxa2xx-ac97", 185 .ac97_control = 1, 186 .probe = pxa2xx_ac97_probe, 187 .remove = pxa2xx_ac97_remove, 188 .suspend = pxa2xx_ac97_suspend, 189 .resume = pxa2xx_ac97_resume, 190 .playback = { 191 .stream_name = "AC97 Playback", 192 .channels_min = 2, 193 .channels_max = 2, 194 .rates = PXA2XX_AC97_RATES, 195 .formats = SNDRV_PCM_FMTBIT_S16_LE,}, 196 .capture = { 197 .stream_name = "AC97 Capture", 198 .channels_min = 2, 199 .channels_max = 2, 200 .rates = PXA2XX_AC97_RATES, 201 .formats = SNDRV_PCM_FMTBIT_S16_LE,}, 202 .ops = &pxa_ac97_hifi_dai_ops, 203 }, 204 { 205 .name = "pxa2xx-ac97-aux", 206 .ac97_control = 1, 207 .playback = { 208 .stream_name = "AC97 Aux Playback", 209 .channels_min = 1, 210 .channels_max = 1, 211 .rates = PXA2XX_AC97_RATES, 212 .formats = SNDRV_PCM_FMTBIT_S16_LE,}, 213 .capture = { 214 .stream_name = "AC97 Aux Capture", 215 .channels_min = 1, 216 .channels_max = 1, 217 .rates = PXA2XX_AC97_RATES, 218 .formats = SNDRV_PCM_FMTBIT_S16_LE,}, 219 .ops = &pxa_ac97_aux_dai_ops, 220 }, 221 { 222 .name = "pxa2xx-ac97-mic", 223 .ac97_control = 1, 224 .capture = { 225 .stream_name = "AC97 Mic 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_mic_dai_ops, 231 }, 232 }; 233 234 EXPORT_SYMBOL_GPL(soc_ac97_ops); 235 236 static __devinit int pxa2xx_ac97_dev_probe(struct platform_device *pdev) 237 { 238 if (pdev->id != -1) { 239 dev_err(&pdev->dev, "PXA2xx has only one AC97 port.\n"); 240 return -ENXIO; 241 } 242 243 /* Punt most of the init to the SoC probe; we may need the machine 244 * driver to do interesting things with the clocking to get us up 245 * and running. 246 */ 247 return snd_soc_register_dais(&pdev->dev, pxa_ac97_dai, 248 ARRAY_SIZE(pxa_ac97_dai)); 249 } 250 251 static int __devexit pxa2xx_ac97_dev_remove(struct platform_device *pdev) 252 { 253 snd_soc_unregister_dais(&pdev->dev, ARRAY_SIZE(pxa_ac97_dai)); 254 return 0; 255 } 256 257 static struct platform_driver pxa2xx_ac97_driver = { 258 .probe = pxa2xx_ac97_dev_probe, 259 .remove = __devexit_p(pxa2xx_ac97_dev_remove), 260 .driver = { 261 .name = "pxa2xx-ac97", 262 .owner = THIS_MODULE, 263 }, 264 }; 265 266 static int __init pxa_ac97_init(void) 267 { 268 return platform_driver_register(&pxa2xx_ac97_driver); 269 } 270 module_init(pxa_ac97_init); 271 272 static void __exit pxa_ac97_exit(void) 273 { 274 platform_driver_unregister(&pxa2xx_ac97_driver); 275 } 276 module_exit(pxa_ac97_exit); 277 278 MODULE_AUTHOR("Nicolas Pitre"); 279 MODULE_DESCRIPTION("AC97 driver for the Intel PXA2xx chip"); 280 MODULE_LICENSE("GPL"); 281