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 EXPORT_SYMBOL_GPL(soc_ac97_ops); 51 52 static struct pxa2xx_pcm_dma_params pxa2xx_ac97_pcm_stereo_out = { 53 .name = "AC97 PCM Stereo out", 54 .dev_addr = __PREG(PCDR), 55 .drcmr = &DRCMR(12), 56 .dcmd = DCMD_INCSRCADDR | DCMD_FLOWTRG | 57 DCMD_BURST32 | DCMD_WIDTH4, 58 }; 59 60 static struct pxa2xx_pcm_dma_params pxa2xx_ac97_pcm_stereo_in = { 61 .name = "AC97 PCM Stereo in", 62 .dev_addr = __PREG(PCDR), 63 .drcmr = &DRCMR(11), 64 .dcmd = DCMD_INCTRGADDR | DCMD_FLOWSRC | 65 DCMD_BURST32 | DCMD_WIDTH4, 66 }; 67 68 static struct pxa2xx_pcm_dma_params pxa2xx_ac97_pcm_aux_mono_out = { 69 .name = "AC97 Aux PCM (Slot 5) Mono out", 70 .dev_addr = __PREG(MODR), 71 .drcmr = &DRCMR(10), 72 .dcmd = DCMD_INCSRCADDR | DCMD_FLOWTRG | 73 DCMD_BURST16 | DCMD_WIDTH2, 74 }; 75 76 static struct pxa2xx_pcm_dma_params pxa2xx_ac97_pcm_aux_mono_in = { 77 .name = "AC97 Aux PCM (Slot 5) Mono in", 78 .dev_addr = __PREG(MODR), 79 .drcmr = &DRCMR(9), 80 .dcmd = DCMD_INCTRGADDR | DCMD_FLOWSRC | 81 DCMD_BURST16 | DCMD_WIDTH2, 82 }; 83 84 static struct pxa2xx_pcm_dma_params pxa2xx_ac97_pcm_mic_mono_in = { 85 .name = "AC97 Mic PCM (Slot 6) Mono in", 86 .dev_addr = __PREG(MCDR), 87 .drcmr = &DRCMR(8), 88 .dcmd = DCMD_INCTRGADDR | DCMD_FLOWSRC | 89 DCMD_BURST16 | DCMD_WIDTH2, 90 }; 91 92 #ifdef CONFIG_PM 93 static int pxa2xx_ac97_suspend(struct snd_soc_dai *dai) 94 { 95 return pxa2xx_ac97_hw_suspend(); 96 } 97 98 static int pxa2xx_ac97_resume(struct snd_soc_dai *dai) 99 { 100 return pxa2xx_ac97_hw_resume(); 101 } 102 103 #else 104 #define pxa2xx_ac97_suspend NULL 105 #define pxa2xx_ac97_resume NULL 106 #endif 107 108 static int pxa2xx_ac97_probe(struct snd_soc_dai *dai) 109 { 110 return pxa2xx_ac97_hw_probe(to_platform_device(dai->dev)); 111 } 112 113 static int pxa2xx_ac97_remove(struct snd_soc_dai *dai) 114 { 115 pxa2xx_ac97_hw_remove(to_platform_device(dai->dev)); 116 return 0; 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 *cpu_dai) 122 { 123 struct pxa2xx_pcm_dma_params *dma_data; 124 125 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) 126 dma_data = &pxa2xx_ac97_pcm_stereo_out; 127 else 128 dma_data = &pxa2xx_ac97_pcm_stereo_in; 129 130 snd_soc_dai_set_dma_data(cpu_dai, substream, dma_data); 131 132 return 0; 133 } 134 135 static int pxa2xx_ac97_hw_aux_params(struct snd_pcm_substream *substream, 136 struct snd_pcm_hw_params *params, 137 struct snd_soc_dai *cpu_dai) 138 { 139 struct pxa2xx_pcm_dma_params *dma_data; 140 141 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) 142 dma_data = &pxa2xx_ac97_pcm_aux_mono_out; 143 else 144 dma_data = &pxa2xx_ac97_pcm_aux_mono_in; 145 146 snd_soc_dai_set_dma_data(cpu_dai, substream, dma_data); 147 148 return 0; 149 } 150 151 static int pxa2xx_ac97_hw_mic_params(struct snd_pcm_substream *substream, 152 struct snd_pcm_hw_params *params, 153 struct snd_soc_dai *cpu_dai) 154 { 155 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) 156 return -ENODEV; 157 else 158 snd_soc_dai_set_dma_data(cpu_dai, substream, 159 &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 const struct snd_soc_dai_ops pxa_ac97_hifi_dai_ops = { 169 .hw_params = pxa2xx_ac97_hw_params, 170 }; 171 172 static const struct snd_soc_dai_ops pxa_ac97_aux_dai_ops = { 173 .hw_params = pxa2xx_ac97_hw_aux_params, 174 }; 175 176 static const 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 static struct snd_soc_dai_driver pxa_ac97_dai_driver[] = { 185 { 186 .name = "pxa2xx-ac97", 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 .ac97_control = 1, 209 .playback = { 210 .stream_name = "AC97 Aux Playback", 211 .channels_min = 1, 212 .channels_max = 1, 213 .rates = PXA2XX_AC97_RATES, 214 .formats = SNDRV_PCM_FMTBIT_S16_LE,}, 215 .capture = { 216 .stream_name = "AC97 Aux Capture", 217 .channels_min = 1, 218 .channels_max = 1, 219 .rates = PXA2XX_AC97_RATES, 220 .formats = SNDRV_PCM_FMTBIT_S16_LE,}, 221 .ops = &pxa_ac97_aux_dai_ops, 222 }, 223 { 224 .name = "pxa2xx-ac97-mic", 225 .ac97_control = 1, 226 .capture = { 227 .stream_name = "AC97 Mic Capture", 228 .channels_min = 1, 229 .channels_max = 1, 230 .rates = PXA2XX_AC97_RATES, 231 .formats = SNDRV_PCM_FMTBIT_S16_LE,}, 232 .ops = &pxa_ac97_mic_dai_ops, 233 }, 234 }; 235 236 static const struct snd_soc_component_driver pxa_ac97_component = { 237 .name = "pxa-ac97", 238 }; 239 240 static int pxa2xx_ac97_dev_probe(struct platform_device *pdev) 241 { 242 if (pdev->id != -1) { 243 dev_err(&pdev->dev, "PXA2xx has only one AC97 port.\n"); 244 return -ENXIO; 245 } 246 247 /* Punt most of the init to the SoC probe; we may need the machine 248 * driver to do interesting things with the clocking to get us up 249 * and running. 250 */ 251 return snd_soc_register_component(&pdev->dev, &pxa_ac97_component, 252 pxa_ac97_dai_driver, ARRAY_SIZE(pxa_ac97_dai_driver)); 253 } 254 255 static int pxa2xx_ac97_dev_remove(struct platform_device *pdev) 256 { 257 snd_soc_unregister_component(&pdev->dev); 258 return 0; 259 } 260 261 static struct platform_driver pxa2xx_ac97_driver = { 262 .probe = pxa2xx_ac97_dev_probe, 263 .remove = pxa2xx_ac97_dev_remove, 264 .driver = { 265 .name = "pxa2xx-ac97", 266 .owner = THIS_MODULE, 267 }, 268 }; 269 270 module_platform_driver(pxa2xx_ac97_driver); 271 272 MODULE_AUTHOR("Nicolas Pitre"); 273 MODULE_DESCRIPTION("AC97 driver for the Intel PXA2xx chip"); 274 MODULE_LICENSE("GPL"); 275