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/io.h> 15 #include <linux/module.h> 16 #include <linux/platform_device.h> 17 18 #include <sound/core.h> 19 #include <sound/ac97_codec.h> 20 #include <sound/soc.h> 21 #include <sound/pxa2xx-lib.h> 22 23 #include <mach/hardware.h> 24 #include <mach/regs-ac97.h> 25 #include <mach/dma.h> 26 #include <mach/audio.h> 27 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 __devinit pxa2xx_ac97_probe(struct snd_soc_dai *dai) 108 { 109 return pxa2xx_ac97_hw_probe(to_platform_device(dai->dev)); 110 } 111 112 static int pxa2xx_ac97_remove(struct snd_soc_dai *dai) 113 { 114 pxa2xx_ac97_hw_remove(to_platform_device(dai->dev)); 115 return 0; 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 *cpu_dai) 121 { 122 struct pxa2xx_pcm_dma_params *dma_data; 123 124 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) 125 dma_data = &pxa2xx_ac97_pcm_stereo_out; 126 else 127 dma_data = &pxa2xx_ac97_pcm_stereo_in; 128 129 snd_soc_dai_set_dma_data(cpu_dai, substream, dma_data); 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 *cpu_dai) 137 { 138 struct pxa2xx_pcm_dma_params *dma_data; 139 140 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) 141 dma_data = &pxa2xx_ac97_pcm_aux_mono_out; 142 else 143 dma_data = &pxa2xx_ac97_pcm_aux_mono_in; 144 145 snd_soc_dai_set_dma_data(cpu_dai, substream, dma_data); 146 147 return 0; 148 } 149 150 static int pxa2xx_ac97_hw_mic_params(struct snd_pcm_substream *substream, 151 struct snd_pcm_hw_params *params, 152 struct snd_soc_dai *cpu_dai) 153 { 154 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) 155 return -ENODEV; 156 else 157 snd_soc_dai_set_dma_data(cpu_dai, substream, 158 &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 const struct snd_soc_dai_ops pxa_ac97_hifi_dai_ops = { 168 .hw_params = pxa2xx_ac97_hw_params, 169 }; 170 171 static const struct snd_soc_dai_ops pxa_ac97_aux_dai_ops = { 172 .hw_params = pxa2xx_ac97_hw_aux_params, 173 }; 174 175 static const 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 static struct snd_soc_dai_driver pxa_ac97_dai_driver[] = { 184 { 185 .name = "pxa2xx-ac97", 186 .ac97_control = 1, 187 .probe = pxa2xx_ac97_probe, 188 .remove = pxa2xx_ac97_remove, 189 .suspend = pxa2xx_ac97_suspend, 190 .resume = pxa2xx_ac97_resume, 191 .playback = { 192 .stream_name = "AC97 Playback", 193 .channels_min = 2, 194 .channels_max = 2, 195 .rates = PXA2XX_AC97_RATES, 196 .formats = SNDRV_PCM_FMTBIT_S16_LE,}, 197 .capture = { 198 .stream_name = "AC97 Capture", 199 .channels_min = 2, 200 .channels_max = 2, 201 .rates = PXA2XX_AC97_RATES, 202 .formats = SNDRV_PCM_FMTBIT_S16_LE,}, 203 .ops = &pxa_ac97_hifi_dai_ops, 204 }, 205 { 206 .name = "pxa2xx-ac97-aux", 207 .ac97_control = 1, 208 .playback = { 209 .stream_name = "AC97 Aux Playback", 210 .channels_min = 1, 211 .channels_max = 1, 212 .rates = PXA2XX_AC97_RATES, 213 .formats = SNDRV_PCM_FMTBIT_S16_LE,}, 214 .capture = { 215 .stream_name = "AC97 Aux Capture", 216 .channels_min = 1, 217 .channels_max = 1, 218 .rates = PXA2XX_AC97_RATES, 219 .formats = SNDRV_PCM_FMTBIT_S16_LE,}, 220 .ops = &pxa_ac97_aux_dai_ops, 221 }, 222 { 223 .name = "pxa2xx-ac97-mic", 224 .ac97_control = 1, 225 .capture = { 226 .stream_name = "AC97 Mic Capture", 227 .channels_min = 1, 228 .channels_max = 1, 229 .rates = PXA2XX_AC97_RATES, 230 .formats = SNDRV_PCM_FMTBIT_S16_LE,}, 231 .ops = &pxa_ac97_mic_dai_ops, 232 }, 233 }; 234 235 EXPORT_SYMBOL_GPL(soc_ac97_ops); 236 237 static __devinit int pxa2xx_ac97_dev_probe(struct platform_device *pdev) 238 { 239 if (pdev->id != -1) { 240 dev_err(&pdev->dev, "PXA2xx has only one AC97 port.\n"); 241 return -ENXIO; 242 } 243 244 /* Punt most of the init to the SoC probe; we may need the machine 245 * driver to do interesting things with the clocking to get us up 246 * and running. 247 */ 248 return snd_soc_register_dais(&pdev->dev, pxa_ac97_dai_driver, 249 ARRAY_SIZE(pxa_ac97_dai_driver)); 250 } 251 252 static int __devexit pxa2xx_ac97_dev_remove(struct platform_device *pdev) 253 { 254 snd_soc_unregister_dais(&pdev->dev, ARRAY_SIZE(pxa_ac97_dai_driver)); 255 return 0; 256 } 257 258 static struct platform_driver pxa2xx_ac97_driver = { 259 .probe = pxa2xx_ac97_dev_probe, 260 .remove = __devexit_p(pxa2xx_ac97_dev_remove), 261 .driver = { 262 .name = "pxa2xx-ac97", 263 .owner = THIS_MODULE, 264 }, 265 }; 266 267 module_platform_driver(pxa2xx_ac97_driver); 268 269 MODULE_AUTHOR("Nicolas Pitre"); 270 MODULE_DESCRIPTION("AC97 driver for the Intel PXA2xx chip"); 271 MODULE_LICENSE("GPL"); 272