sound/soc/pxa/pxa2xx-ac97.c

   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 void 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 }
 273
 274 #ifdef CONFIG_PM_SLEEP
 275 static int pxa2xx_ac97_dev_suspend(struct device *dev)
 276 {
 277         return pxa2xx_ac97_hw_suspend();
 278 }
 279
 280 static int pxa2xx_ac97_dev_resume(struct device *dev)
 281 {
 282         return pxa2xx_ac97_hw_resume();
 283 }
 284
 285 static SIMPLE_DEV_PM_OPS(pxa2xx_ac97_pm_ops,
 286                 pxa2xx_ac97_dev_suspend, pxa2xx_ac97_dev_resume);
 287 #endif
 288
 289 static struct platform_driver pxa2xx_ac97_driver = {
 290         .probe          = pxa2xx_ac97_dev_probe,
 291         .remove_new     = pxa2xx_ac97_dev_remove,
 292         .driver         = {
 293                 .name   = "pxa2xx-ac97",
 294 #ifdef CONFIG_PM_SLEEP
 295                 .pm     = &pxa2xx_ac97_pm_ops,
 296 #endif
 297                 .of_match_table = of_match_ptr(pxa2xx_ac97_dt_ids),
 298         },
 299 };
 300
 301 module_platform_driver(pxa2xx_ac97_driver);
 302
 303 MODULE_AUTHOR("Nicolas Pitre");
 304 MODULE_DESCRIPTION("AC97 driver for the Intel PXA2xx chip");
 305 MODULE_LICENSE("GPL");
 306 MODULE_ALIAS("platform:pxa2xx-ac97");