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 <linux/platform_data/asoc-pxa.h> 25 26 #define PCDR 0x0040 /* PCM FIFO Data Register */ 27 #define MODR 0x0140 /* Modem FIFO Data Register */ 28 #define MCDR 0x0060 /* Mic-in FIFO Data Register */ 29 30 static void pxa2xx_ac97_warm_reset(struct ac97_controller *adrv) 31 { 32 pxa2xx_ac97_try_warm_reset(); 33 34 pxa2xx_ac97_finish_reset(); 35 } 36 37 static void pxa2xx_ac97_cold_reset(struct ac97_controller *adrv) 38 { 39 pxa2xx_ac97_try_cold_reset(); 40 41 pxa2xx_ac97_finish_reset(); 42 } 43 44 static int pxa2xx_ac97_read_actrl(struct ac97_controller *adrv, int slot, 45 unsigned short reg) 46 { 47 return pxa2xx_ac97_read(slot, reg); 48 } 49 50 static int pxa2xx_ac97_write_actrl(struct ac97_controller *adrv, int slot, 51 unsigned short reg, unsigned short val) 52 { 53 return pxa2xx_ac97_write(slot, reg, val); 54 } 55 56 static struct ac97_controller_ops pxa2xx_ac97_ops = { 57 .read = pxa2xx_ac97_read_actrl, 58 .write = pxa2xx_ac97_write_actrl, 59 .warm_reset = pxa2xx_ac97_warm_reset, 60 .reset = pxa2xx_ac97_cold_reset, 61 }; 62 63 static struct snd_dmaengine_dai_dma_data pxa2xx_ac97_pcm_stereo_in = { 64 .addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES, 65 .chan_name = "pcm_pcm_stereo_in", 66 .maxburst = 32, 67 }; 68 69 static struct snd_dmaengine_dai_dma_data pxa2xx_ac97_pcm_stereo_out = { 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_width = DMA_SLAVE_BUSWIDTH_2_BYTES, 77 .chan_name = "pcm_aux_mono_out", 78 .maxburst = 16, 79 }; 80 81 static struct snd_dmaengine_dai_dma_data pxa2xx_ac97_pcm_aux_mono_in = { 82 .addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES, 83 .chan_name = "pcm_aux_mono_in", 84 .maxburst = 16, 85 }; 86 87 static struct snd_dmaengine_dai_dma_data pxa2xx_ac97_pcm_mic_mono_in = { 88 .addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES, 89 .chan_name = "pcm_aux_mic_mono", 90 .maxburst = 16, 91 }; 92 93 static int pxa2xx_ac97_hifi_startup(struct snd_pcm_substream *substream, 94 struct snd_soc_dai *cpu_dai) 95 { 96 struct snd_dmaengine_dai_dma_data *dma_data; 97 98 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) 99 dma_data = &pxa2xx_ac97_pcm_stereo_out; 100 else 101 dma_data = &pxa2xx_ac97_pcm_stereo_in; 102 103 snd_soc_dai_set_dma_data(cpu_dai, substream, dma_data); 104 105 return 0; 106 } 107 108 static int pxa2xx_ac97_aux_startup(struct snd_pcm_substream *substream, 109 struct snd_soc_dai *cpu_dai) 110 { 111 struct snd_dmaengine_dai_dma_data *dma_data; 112 113 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) 114 dma_data = &pxa2xx_ac97_pcm_aux_mono_out; 115 else 116 dma_data = &pxa2xx_ac97_pcm_aux_mono_in; 117 118 snd_soc_dai_set_dma_data(cpu_dai, substream, dma_data); 119 120 return 0; 121 } 122 123 static int pxa2xx_ac97_mic_startup(struct snd_pcm_substream *substream, 124 struct snd_soc_dai *cpu_dai) 125 { 126 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) 127 return -ENODEV; 128 snd_soc_dai_set_dma_data(cpu_dai, substream, 129 &pxa2xx_ac97_pcm_mic_mono_in); 130 131 return 0; 132 } 133 134 #define PXA2XX_AC97_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\ 135 SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 | SNDRV_PCM_RATE_44100 | \ 136 SNDRV_PCM_RATE_48000) 137 138 static const struct snd_soc_dai_ops pxa_ac97_hifi_dai_ops = { 139 .startup = pxa2xx_ac97_hifi_startup, 140 }; 141 142 static const struct snd_soc_dai_ops pxa_ac97_aux_dai_ops = { 143 .startup = pxa2xx_ac97_aux_startup, 144 }; 145 146 static const struct snd_soc_dai_ops pxa_ac97_mic_dai_ops = { 147 .startup = pxa2xx_ac97_mic_startup, 148 }; 149 150 /* 151 * There is only 1 physical AC97 interface for pxa2xx, but it 152 * has extra fifo's that can be used for aux DACs and ADCs. 153 */ 154 static struct snd_soc_dai_driver pxa_ac97_dai_driver[] = { 155 { 156 .name = "pxa2xx-ac97", 157 .playback = { 158 .stream_name = "AC97 Playback", 159 .channels_min = 2, 160 .channels_max = 2, 161 .rates = PXA2XX_AC97_RATES, 162 .formats = SNDRV_PCM_FMTBIT_S16_LE,}, 163 .capture = { 164 .stream_name = "AC97 Capture", 165 .channels_min = 2, 166 .channels_max = 2, 167 .rates = PXA2XX_AC97_RATES, 168 .formats = SNDRV_PCM_FMTBIT_S16_LE,}, 169 .ops = &pxa_ac97_hifi_dai_ops, 170 }, 171 { 172 .name = "pxa2xx-ac97-aux", 173 .playback = { 174 .stream_name = "AC97 Aux Playback", 175 .channels_min = 1, 176 .channels_max = 1, 177 .rates = PXA2XX_AC97_RATES, 178 .formats = SNDRV_PCM_FMTBIT_S16_LE,}, 179 .capture = { 180 .stream_name = "AC97 Aux Capture", 181 .channels_min = 1, 182 .channels_max = 1, 183 .rates = PXA2XX_AC97_RATES, 184 .formats = SNDRV_PCM_FMTBIT_S16_LE,}, 185 .ops = &pxa_ac97_aux_dai_ops, 186 }, 187 { 188 .name = "pxa2xx-ac97-mic", 189 .capture = { 190 .stream_name = "AC97 Mic Capture", 191 .channels_min = 1, 192 .channels_max = 1, 193 .rates = PXA2XX_AC97_RATES, 194 .formats = SNDRV_PCM_FMTBIT_S16_LE,}, 195 .ops = &pxa_ac97_mic_dai_ops, 196 }, 197 }; 198 199 static const struct snd_soc_component_driver pxa_ac97_component = { 200 .name = "pxa-ac97", 201 .pcm_construct = pxa2xx_soc_pcm_new, 202 .open = pxa2xx_soc_pcm_open, 203 .close = pxa2xx_soc_pcm_close, 204 .hw_params = pxa2xx_soc_pcm_hw_params, 205 .prepare = pxa2xx_soc_pcm_prepare, 206 .trigger = pxa2xx_soc_pcm_trigger, 207 .pointer = pxa2xx_soc_pcm_pointer, 208 }; 209 210 #ifdef CONFIG_OF 211 static const struct of_device_id pxa2xx_ac97_dt_ids[] = { 212 { .compatible = "marvell,pxa250-ac97", }, 213 { .compatible = "marvell,pxa270-ac97", }, 214 { .compatible = "marvell,pxa300-ac97", }, 215 { } 216 }; 217 MODULE_DEVICE_TABLE(of, pxa2xx_ac97_dt_ids); 218 219 #endif 220 221 static int pxa2xx_ac97_dev_probe(struct platform_device *pdev) 222 { 223 int ret; 224 struct ac97_controller *ctrl; 225 pxa2xx_audio_ops_t *pdata = pdev->dev.platform_data; 226 struct resource *regs; 227 void **codecs_pdata; 228 229 if (pdev->id != -1) { 230 dev_err(&pdev->dev, "PXA2xx has only one AC97 port.\n"); 231 return -ENXIO; 232 } 233 234 regs = platform_get_resource(pdev, IORESOURCE_MEM, 0); 235 if (!regs) 236 return -ENXIO; 237 238 pxa2xx_ac97_pcm_stereo_in.addr = regs->start + PCDR; 239 pxa2xx_ac97_pcm_stereo_out.addr = regs->start + PCDR; 240 pxa2xx_ac97_pcm_aux_mono_out.addr = regs->start + MODR; 241 pxa2xx_ac97_pcm_aux_mono_in.addr = regs->start + MODR; 242 pxa2xx_ac97_pcm_mic_mono_in.addr = regs->start + MCDR; 243 244 ret = pxa2xx_ac97_hw_probe(pdev); 245 if (ret) { 246 dev_err(&pdev->dev, "PXA2xx AC97 hw probe error (%d)\n", ret); 247 return ret; 248 } 249 250 codecs_pdata = pdata ? pdata->codec_pdata : NULL; 251 ctrl = snd_ac97_controller_register(&pxa2xx_ac97_ops, &pdev->dev, 252 AC97_SLOTS_AVAILABLE_ALL, 253 codecs_pdata); 254 if (IS_ERR(ctrl)) 255 return PTR_ERR(ctrl); 256 257 platform_set_drvdata(pdev, ctrl); 258 /* Punt most of the init to the SoC probe; we may need the machine 259 * driver to do interesting things with the clocking to get us up 260 * and running. 261 */ 262 return devm_snd_soc_register_component(&pdev->dev, &pxa_ac97_component, 263 pxa_ac97_dai_driver, ARRAY_SIZE(pxa_ac97_dai_driver)); 264 } 265 266 static int pxa2xx_ac97_dev_remove(struct platform_device *pdev) 267 { 268 struct ac97_controller *ctrl = platform_get_drvdata(pdev); 269 270 snd_ac97_controller_unregister(ctrl); 271 pxa2xx_ac97_hw_remove(pdev); 272 return 0; 273 } 274 275 #ifdef CONFIG_PM_SLEEP 276 static int pxa2xx_ac97_dev_suspend(struct device *dev) 277 { 278 return pxa2xx_ac97_hw_suspend(); 279 } 280 281 static int pxa2xx_ac97_dev_resume(struct device *dev) 282 { 283 return pxa2xx_ac97_hw_resume(); 284 } 285 286 static SIMPLE_DEV_PM_OPS(pxa2xx_ac97_pm_ops, 287 pxa2xx_ac97_dev_suspend, pxa2xx_ac97_dev_resume); 288 #endif 289 290 static struct platform_driver pxa2xx_ac97_driver = { 291 .probe = pxa2xx_ac97_dev_probe, 292 .remove = pxa2xx_ac97_dev_remove, 293 .driver = { 294 .name = "pxa2xx-ac97", 295 #ifdef CONFIG_PM_SLEEP 296 .pm = &pxa2xx_ac97_pm_ops, 297 #endif 298 .of_match_table = of_match_ptr(pxa2xx_ac97_dt_ids), 299 }, 300 }; 301 302 module_platform_driver(pxa2xx_ac97_driver); 303 304 MODULE_AUTHOR("Nicolas Pitre"); 305 MODULE_DESCRIPTION("AC97 driver for the Intel PXA2xx chip"); 306 MODULE_LICENSE("GPL"); 307 MODULE_ALIAS("platform:pxa2xx-ac97"); 308