1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * linux/sound/pxa2xx-ac97.c -- AC97 support for the Intel PXA2xx chip. 4 * 5 * Author: Nicolas Pitre 6 * Created: Dec 02, 2004 7 * Copyright: MontaVista Software Inc. 8 */ 9 10 #include <linux/init.h> 11 #include <linux/io.h> 12 #include <linux/module.h> 13 #include <linux/platform_device.h> 14 #include <linux/dmaengine.h> 15 #include <linux/dma/pxa-dma.h> 16 17 #include <sound/ac97/controller.h> 18 #include <sound/core.h> 19 #include <sound/ac97_codec.h> 20 #include <sound/soc.h> 21 #include <sound/pxa2xx-lib.h> 22 #include <sound/dmaengine_pcm.h> 23 24 #include <mach/hardware.h> 25 #include <mach/regs-ac97.h> 26 #include <mach/audio.h> 27 28 static void pxa2xx_ac97_warm_reset(struct ac97_controller *adrv) 29 { 30 pxa2xx_ac97_try_warm_reset(); 31 32 pxa2xx_ac97_finish_reset(); 33 } 34 35 static void pxa2xx_ac97_cold_reset(struct ac97_controller *adrv) 36 { 37 pxa2xx_ac97_try_cold_reset(); 38 39 pxa2xx_ac97_finish_reset(); 40 } 41 42 static int pxa2xx_ac97_read_actrl(struct ac97_controller *adrv, int slot, 43 unsigned short reg) 44 { 45 return pxa2xx_ac97_read(slot, reg); 46 } 47 48 static int pxa2xx_ac97_write_actrl(struct ac97_controller *adrv, int slot, 49 unsigned short reg, unsigned short val) 50 { 51 return pxa2xx_ac97_write(slot, reg, val); 52 } 53 54 static struct ac97_controller_ops pxa2xx_ac97_ops = { 55 .read = pxa2xx_ac97_read_actrl, 56 .write = pxa2xx_ac97_write_actrl, 57 .warm_reset = pxa2xx_ac97_warm_reset, 58 .reset = pxa2xx_ac97_cold_reset, 59 }; 60 61 static struct snd_dmaengine_dai_dma_data pxa2xx_ac97_pcm_stereo_in = { 62 .addr = __PREG(PCDR), 63 .addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES, 64 .chan_name = "pcm_pcm_stereo_in", 65 .maxburst = 32, 66 }; 67 68 static struct snd_dmaengine_dai_dma_data pxa2xx_ac97_pcm_stereo_out = { 69 .addr = __PREG(PCDR), 70 .addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES, 71 .chan_name = "pcm_pcm_stereo_out", 72 .maxburst = 32, 73 }; 74 75 static struct snd_dmaengine_dai_dma_data pxa2xx_ac97_pcm_aux_mono_out = { 76 .addr = __PREG(MODR), 77 .addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES, 78 .chan_name = "pcm_aux_mono_out", 79 .maxburst = 16, 80 }; 81 82 static struct snd_dmaengine_dai_dma_data pxa2xx_ac97_pcm_aux_mono_in = { 83 .addr = __PREG(MODR), 84 .addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES, 85 .chan_name = "pcm_aux_mono_in", 86 .maxburst = 16, 87 }; 88 89 static struct snd_dmaengine_dai_dma_data pxa2xx_ac97_pcm_mic_mono_in = { 90 .addr = __PREG(MCDR), 91 .addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES, 92 .chan_name = "pcm_aux_mic_mono", 93 .maxburst = 16, 94 }; 95 96 static int pxa2xx_ac97_hifi_startup(struct snd_pcm_substream *substream, 97 struct snd_soc_dai *cpu_dai) 98 { 99 struct snd_dmaengine_dai_dma_data *dma_data; 100 101 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) 102 dma_data = &pxa2xx_ac97_pcm_stereo_out; 103 else 104 dma_data = &pxa2xx_ac97_pcm_stereo_in; 105 106 snd_soc_dai_set_dma_data(cpu_dai, substream, dma_data); 107 108 return 0; 109 } 110 111 static int pxa2xx_ac97_aux_startup(struct snd_pcm_substream *substream, 112 struct snd_soc_dai *cpu_dai) 113 { 114 struct snd_dmaengine_dai_dma_data *dma_data; 115 116 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) 117 dma_data = &pxa2xx_ac97_pcm_aux_mono_out; 118 else 119 dma_data = &pxa2xx_ac97_pcm_aux_mono_in; 120 121 snd_soc_dai_set_dma_data(cpu_dai, substream, dma_data); 122 123 return 0; 124 } 125 126 static int pxa2xx_ac97_mic_startup(struct snd_pcm_substream *substream, 127 struct snd_soc_dai *cpu_dai) 128 { 129 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) 130 return -ENODEV; 131 snd_soc_dai_set_dma_data(cpu_dai, substream, 132 &pxa2xx_ac97_pcm_mic_mono_in); 133 134 return 0; 135 } 136 137 #define PXA2XX_AC97_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\ 138 SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 | SNDRV_PCM_RATE_44100 | \ 139 SNDRV_PCM_RATE_48000) 140 141 static const struct snd_soc_dai_ops pxa_ac97_hifi_dai_ops = { 142 .startup = pxa2xx_ac97_hifi_startup, 143 }; 144 145 static const struct snd_soc_dai_ops pxa_ac97_aux_dai_ops = { 146 .startup = pxa2xx_ac97_aux_startup, 147 }; 148 149 static const struct snd_soc_dai_ops pxa_ac97_mic_dai_ops = { 150 .startup = pxa2xx_ac97_mic_startup, 151 }; 152 153 /* 154 * There is only 1 physical AC97 interface for pxa2xx, but it 155 * has extra fifo's that can be used for aux DACs and ADCs. 156 */ 157 static struct snd_soc_dai_driver pxa_ac97_dai_driver[] = { 158 { 159 .name = "pxa2xx-ac97", 160 .playback = { 161 .stream_name = "AC97 Playback", 162 .channels_min = 2, 163 .channels_max = 2, 164 .rates = PXA2XX_AC97_RATES, 165 .formats = SNDRV_PCM_FMTBIT_S16_LE,}, 166 .capture = { 167 .stream_name = "AC97 Capture", 168 .channels_min = 2, 169 .channels_max = 2, 170 .rates = PXA2XX_AC97_RATES, 171 .formats = SNDRV_PCM_FMTBIT_S16_LE,}, 172 .ops = &pxa_ac97_hifi_dai_ops, 173 }, 174 { 175 .name = "pxa2xx-ac97-aux", 176 .playback = { 177 .stream_name = "AC97 Aux Playback", 178 .channels_min = 1, 179 .channels_max = 1, 180 .rates = PXA2XX_AC97_RATES, 181 .formats = SNDRV_PCM_FMTBIT_S16_LE,}, 182 .capture = { 183 .stream_name = "AC97 Aux Capture", 184 .channels_min = 1, 185 .channels_max = 1, 186 .rates = PXA2XX_AC97_RATES, 187 .formats = SNDRV_PCM_FMTBIT_S16_LE,}, 188 .ops = &pxa_ac97_aux_dai_ops, 189 }, 190 { 191 .name = "pxa2xx-ac97-mic", 192 .capture = { 193 .stream_name = "AC97 Mic Capture", 194 .channels_min = 1, 195 .channels_max = 1, 196 .rates = PXA2XX_AC97_RATES, 197 .formats = SNDRV_PCM_FMTBIT_S16_LE,}, 198 .ops = &pxa_ac97_mic_dai_ops, 199 }, 200 }; 201 202 static const struct snd_soc_component_driver pxa_ac97_component = { 203 .name = "pxa-ac97", 204 .pcm_construct = pxa2xx_soc_pcm_new, 205 .open = pxa2xx_soc_pcm_open, 206 .close = pxa2xx_soc_pcm_close, 207 .hw_params = pxa2xx_soc_pcm_hw_params, 208 .prepare = pxa2xx_soc_pcm_prepare, 209 .trigger = pxa2xx_soc_pcm_trigger, 210 .pointer = pxa2xx_soc_pcm_pointer, 211 }; 212 213 #ifdef CONFIG_OF 214 static const struct of_device_id pxa2xx_ac97_dt_ids[] = { 215 { .compatible = "marvell,pxa250-ac97", }, 216 { .compatible = "marvell,pxa270-ac97", }, 217 { .compatible = "marvell,pxa300-ac97", }, 218 { } 219 }; 220 MODULE_DEVICE_TABLE(of, pxa2xx_ac97_dt_ids); 221 222 #endif 223 224 static int pxa2xx_ac97_dev_probe(struct platform_device *pdev) 225 { 226 int ret; 227 struct ac97_controller *ctrl; 228 pxa2xx_audio_ops_t *pdata = pdev->dev.platform_data; 229 void **codecs_pdata; 230 231 if (pdev->id != -1) { 232 dev_err(&pdev->dev, "PXA2xx has only one AC97 port.\n"); 233 return -ENXIO; 234 } 235 236 ret = pxa2xx_ac97_hw_probe(pdev); 237 if (ret) { 238 dev_err(&pdev->dev, "PXA2xx AC97 hw probe error (%d)\n", ret); 239 return ret; 240 } 241 242 codecs_pdata = pdata ? pdata->codec_pdata : NULL; 243 ctrl = snd_ac97_controller_register(&pxa2xx_ac97_ops, &pdev->dev, 244 AC97_SLOTS_AVAILABLE_ALL, 245 codecs_pdata); 246 if (IS_ERR(ctrl)) 247 return PTR_ERR(ctrl); 248 249 platform_set_drvdata(pdev, ctrl); 250 /* Punt most of the init to the SoC probe; we may need the machine 251 * driver to do interesting things with the clocking to get us up 252 * and running. 253 */ 254 return devm_snd_soc_register_component(&pdev->dev, &pxa_ac97_component, 255 pxa_ac97_dai_driver, ARRAY_SIZE(pxa_ac97_dai_driver)); 256 } 257 258 static int pxa2xx_ac97_dev_remove(struct platform_device *pdev) 259 { 260 struct ac97_controller *ctrl = platform_get_drvdata(pdev); 261 262 snd_ac97_controller_unregister(ctrl); 263 pxa2xx_ac97_hw_remove(pdev); 264 return 0; 265 } 266 267 #ifdef CONFIG_PM_SLEEP 268 static int pxa2xx_ac97_dev_suspend(struct device *dev) 269 { 270 return pxa2xx_ac97_hw_suspend(); 271 } 272 273 static int pxa2xx_ac97_dev_resume(struct device *dev) 274 { 275 return pxa2xx_ac97_hw_resume(); 276 } 277 278 static SIMPLE_DEV_PM_OPS(pxa2xx_ac97_pm_ops, 279 pxa2xx_ac97_dev_suspend, pxa2xx_ac97_dev_resume); 280 #endif 281 282 static struct platform_driver pxa2xx_ac97_driver = { 283 .probe = pxa2xx_ac97_dev_probe, 284 .remove = pxa2xx_ac97_dev_remove, 285 .driver = { 286 .name = "pxa2xx-ac97", 287 #ifdef CONFIG_PM_SLEEP 288 .pm = &pxa2xx_ac97_pm_ops, 289 #endif 290 .of_match_table = of_match_ptr(pxa2xx_ac97_dt_ids), 291 }, 292 }; 293 294 module_platform_driver(pxa2xx_ac97_driver); 295 296 MODULE_AUTHOR("Nicolas Pitre"); 297 MODULE_DESCRIPTION("AC97 driver for the Intel PXA2xx chip"); 298 MODULE_LICENSE("GPL"); 299 MODULE_ALIAS("platform:pxa2xx-ac97"); 300