sound/soc/amd/acp/acp-platform.c

   1 // SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)
   2 //
   3 // This file is provided under a dual BSD/GPLv2 license. When using or
   4 // redistributing this file, you may do so under either license.
   5 //
   6 // Copyright(c) 2021 Advanced Micro Devices, Inc.
   7 //
   8 // Authors: Ajit Kumar Pandey <AjitKumar.Pandey@amd.com>
   9
  10 /*
  11  * Generic interface for ACP audio blck PCM component
  12  */
  13
  14 #include <linux/platform_device.h>
  15 #include <linux/module.h>
  16 #include <linux/err.h>
  17 #include <linux/io.h>
  18 #include <sound/pcm_params.h>
  19 #include <sound/soc.h>
  20 #include <sound/soc-dai.h>
  21 #include <linux/dma-mapping.h>
  22
  23 #include "amd.h"
  24 #include "../mach-config.h"
  25 #include "acp-mach.h"
  26
  27 #define DRV_NAME "acp_i2s_dma"
  28
  29 static const struct snd_pcm_hardware acp_pcm_hardware_playback = {
  30         .info = SNDRV_PCM_INFO_INTERLEAVED |
  31                 SNDRV_PCM_INFO_BLOCK_TRANSFER |
  32                 SNDRV_PCM_INFO_BATCH |
  33                 SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_MMAP_VALID |
  34                 SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_RESUME,
  35         .formats = SNDRV_PCM_FMTBIT_S16_LE |  SNDRV_PCM_FMTBIT_S8 |
  36                    SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S24_LE |
  37                    SNDRV_PCM_FMTBIT_S32_LE,
  38         .channels_min = 2,
  39         .channels_max = 8,
  40         .rates = SNDRV_PCM_RATE_8000_96000,
  41         .rate_min = 8000,
  42         .rate_max = 96000,
  43         .buffer_bytes_max = PLAYBACK_MAX_NUM_PERIODS * PLAYBACK_MAX_PERIOD_SIZE,
  44         .period_bytes_min = PLAYBACK_MIN_PERIOD_SIZE,
  45         .period_bytes_max = PLAYBACK_MAX_PERIOD_SIZE,
  46         .periods_min = PLAYBACK_MIN_NUM_PERIODS,
  47         .periods_max = PLAYBACK_MAX_NUM_PERIODS,
  48 };
  49
  50 static const struct snd_pcm_hardware acp_pcm_hardware_capture = {
  51         .info = SNDRV_PCM_INFO_INTERLEAVED |
  52                 SNDRV_PCM_INFO_BLOCK_TRANSFER |
  53                 SNDRV_PCM_INFO_BATCH |
  54                 SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_MMAP_VALID |
  55                 SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_RESUME,
  56         .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S8 |
  57                    SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S24_LE |
  58                    SNDRV_PCM_FMTBIT_S32_LE,
  59         .channels_min = 2,
  60         .channels_max = 2,
  61         .rates = SNDRV_PCM_RATE_8000_48000,
  62         .rate_min = 8000,
  63         .rate_max = 48000,
  64         .buffer_bytes_max = CAPTURE_MAX_NUM_PERIODS * CAPTURE_MAX_PERIOD_SIZE,
  65         .period_bytes_min = CAPTURE_MIN_PERIOD_SIZE,
  66         .period_bytes_max = CAPTURE_MAX_PERIOD_SIZE,
  67         .periods_min = CAPTURE_MIN_NUM_PERIODS,
  68         .periods_max = CAPTURE_MAX_NUM_PERIODS,
  69 };
  70
  71 static const struct snd_pcm_hardware acp6x_pcm_hardware_playback = {
  72         .info = SNDRV_PCM_INFO_INTERLEAVED |
  73                 SNDRV_PCM_INFO_BLOCK_TRANSFER |
  74                 SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_MMAP_VALID |
  75                 SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_RESUME,
  76         .formats = SNDRV_PCM_FMTBIT_S16_LE |  SNDRV_PCM_FMTBIT_S8 |
  77                    SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S24_LE |
  78                    SNDRV_PCM_FMTBIT_S32_LE,
  79         .channels_min = 2,
  80         .channels_max = 32,
  81         .rates = SNDRV_PCM_RATE_8000_192000,
  82         .rate_min = 8000,
  83         .rate_max = 192000,
  84         .buffer_bytes_max = PLAYBACK_MAX_NUM_PERIODS * PLAYBACK_MAX_PERIOD_SIZE,
  85         .period_bytes_min = PLAYBACK_MIN_PERIOD_SIZE,
  86         .period_bytes_max = PLAYBACK_MAX_PERIOD_SIZE,
  87         .periods_min = PLAYBACK_MIN_NUM_PERIODS,
  88         .periods_max = PLAYBACK_MAX_NUM_PERIODS,
  89 };
  90
  91 static const struct snd_pcm_hardware acp6x_pcm_hardware_capture = {
  92         .info = SNDRV_PCM_INFO_INTERLEAVED |
  93                 SNDRV_PCM_INFO_BLOCK_TRANSFER |
  94                 SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_MMAP_VALID |
  95                 SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_RESUME,
  96         .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S8 |
  97                    SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S24_LE |
  98                    SNDRV_PCM_FMTBIT_S32_LE,
  99         .channels_min = 2,
 100         .channels_max = 32,
 101         .rates = SNDRV_PCM_RATE_8000_192000,
 102         .rate_min = 8000,
 103         .rate_max = 192000,
 104         .buffer_bytes_max = CAPTURE_MAX_NUM_PERIODS * CAPTURE_MAX_PERIOD_SIZE,
 105         .period_bytes_min = CAPTURE_MIN_PERIOD_SIZE,
 106         .period_bytes_max = CAPTURE_MAX_PERIOD_SIZE,
 107         .periods_min = CAPTURE_MIN_NUM_PERIODS,
 108         .periods_max = CAPTURE_MAX_NUM_PERIODS,
 109 };
 110
 111 int acp_machine_select(struct acp_dev_data *adata)
 112 {
 113         struct snd_soc_acpi_mach *mach;
 114         int size, platform;
 115
 116         if (adata->flag == FLAG_AMD_LEGACY_ONLY_DMIC) {
 117                 platform = adata->acp_rev;
 118                 adata->mach_dev = platform_device_register_data(adata->dev, "acp-pdm-mach",
 119                                                                 PLATFORM_DEVID_NONE, &platform,
 120                                                                 sizeof(platform));
 121         } else {
 122                 size = sizeof(*adata->machines);
 123                 mach = snd_soc_acpi_find_machine(adata->machines);
 124                 if (!mach) {
 125                         dev_err(adata->dev, "warning: No matching ASoC machine driver found\n");
 126                         return -EINVAL;
 127                 }
 128                 mach->mach_params.subsystem_rev = adata->acp_rev;
 129                 adata->mach_dev = platform_device_register_data(adata->dev, mach->drv_name,
 130                                                                 PLATFORM_DEVID_NONE, mach, size);
 131         }
 132         if (IS_ERR(adata->mach_dev))
 133                 dev_warn(adata->dev, "Unable to register Machine device\n");
 134         return 0;
 135 }
 136 EXPORT_SYMBOL_NS_GPL(acp_machine_select, "SND_SOC_ACP_COMMON");
 137
 138 static irqreturn_t i2s_irq_handler(int irq, void *data)
 139 {
 140         struct acp_dev_data *adata = data;
 141         struct acp_resource *rsrc = adata->rsrc;
 142         struct acp_stream *stream;
 143         u16 i2s_flag = 0;
 144         u32 ext_intr_stat, ext_intr_stat1;
 145
 146         if (adata->rsrc->no_of_ctrls == 2)
 147                 ext_intr_stat1 = readl(ACP_EXTERNAL_INTR_STAT(adata, (rsrc->irqp_used - 1)));
 148
 149         ext_intr_stat = readl(ACP_EXTERNAL_INTR_STAT(adata, rsrc->irqp_used));
 150
 151         spin_lock(&adata->acp_lock);
 152         list_for_each_entry(stream, &adata->stream_list, list) {
 153                 if (ext_intr_stat & stream->irq_bit) {
 154                         writel(stream->irq_bit,
 155                                ACP_EXTERNAL_INTR_STAT(adata, rsrc->irqp_used));
 156                         snd_pcm_period_elapsed(stream->substream);
 157                         i2s_flag = 1;
 158                 }
 159                 if (adata->rsrc->no_of_ctrls == 2) {
 160                         if (ext_intr_stat1 & stream->irq_bit) {
 161                                 writel(stream->irq_bit, ACP_EXTERNAL_INTR_STAT(adata,
 162                                        (rsrc->irqp_used - 1)));
 163                                 snd_pcm_period_elapsed(stream->substream);
 164                                 i2s_flag = 1;
 165                         }
 166                 }
 167         }
 168         spin_unlock(&adata->acp_lock);
 169         if (i2s_flag)
 170                 return IRQ_HANDLED;
 171
 172         return IRQ_NONE;
 173 }
 174
 175 void config_pte_for_stream(struct acp_dev_data *adata, struct acp_stream *stream)
 176 {
 177         struct acp_resource *rsrc = adata->rsrc;
 178         u32 reg_val;
 179
 180         reg_val = rsrc->sram_pte_offset;
 181         stream->reg_offset = 0x02000000;
 182
 183         writel((reg_val + GRP1_OFFSET) | BIT(31), adata->acp_base + ACPAXI2AXI_ATU_BASE_ADDR_GRP_1);
 184         writel(PAGE_SIZE_4K_ENABLE,  adata->acp_base + ACPAXI2AXI_ATU_PAGE_SIZE_GRP_1);
 185
 186         writel((reg_val + GRP2_OFFSET) | BIT(31), adata->acp_base + ACPAXI2AXI_ATU_BASE_ADDR_GRP_2);
 187         writel(PAGE_SIZE_4K_ENABLE,  adata->acp_base + ACPAXI2AXI_ATU_PAGE_SIZE_GRP_2);
 188
 189         writel(reg_val | BIT(31), adata->acp_base + ACPAXI2AXI_ATU_BASE_ADDR_GRP_5);
 190         writel(PAGE_SIZE_4K_ENABLE,  adata->acp_base + ACPAXI2AXI_ATU_PAGE_SIZE_GRP_5);
 191
 192         writel(0x01, adata->acp_base + ACPAXI2AXI_ATU_CTRL);
 193 }
 194 EXPORT_SYMBOL_NS_GPL(config_pte_for_stream, "SND_SOC_ACP_COMMON");
 195
 196 void config_acp_dma(struct acp_dev_data *adata, struct acp_stream *stream, int size)
 197 {
 198         struct snd_pcm_substream *substream = stream->substream;
 199         struct acp_resource *rsrc = adata->rsrc;
 200         dma_addr_t addr = substream->dma_buffer.addr;
 201         int num_pages = (PAGE_ALIGN(size) >> PAGE_SHIFT);
 202         u32 low, high, val;
 203         u16 page_idx;
 204
 205         switch (adata->acp_rev) {
 206         case ACP70_PCI_ID:
 207         case ACP71_PCI_ID:
 208                 switch (stream->dai_id) {
 209                 case I2S_SP_INSTANCE:
 210                         if (stream->dir == SNDRV_PCM_STREAM_PLAYBACK)
 211                                 val = 0x0;
 212                         else
 213                                 val = 0x1000;
 214                         break;
 215                 case I2S_BT_INSTANCE:
 216                         if (stream->dir == SNDRV_PCM_STREAM_PLAYBACK)
 217                                 val = 0x2000;
 218                         else
 219                                 val = 0x3000;
 220                         break;
 221                 case I2S_HS_INSTANCE:
 222                         if (stream->dir == SNDRV_PCM_STREAM_PLAYBACK)
 223                                 val = 0x4000;
 224                         else
 225                                 val = 0x5000;
 226                         break;
 227                 case DMIC_INSTANCE:
 228                         val = 0x6000;
 229                         break;
 230                 default:
 231                         dev_err(adata->dev, "Invalid dai id %x\n", stream->dai_id);
 232                         return;
 233                 }
 234                 break;
 235         default:
 236                 val = stream->pte_offset;
 237                 break;
 238         }
 239
 240         for (page_idx = 0; page_idx < num_pages; page_idx++) {
 241                 /* Load the low address of page int ACP SRAM through SRBM */
 242                 low = lower_32_bits(addr);
 243                 high = upper_32_bits(addr);
 244                 writel(low, adata->acp_base + rsrc->scratch_reg_offset + val);
 245                 high |= BIT(31);
 246                 writel(high, adata->acp_base + rsrc->scratch_reg_offset + val + 4);
 247
 248                 /* Move to next physically contiguous page */
 249                 val += 8;
 250                 addr += PAGE_SIZE;
 251         }
 252 }
 253 EXPORT_SYMBOL_NS_GPL(config_acp_dma, "SND_SOC_ACP_COMMON");
 254
 255 static int acp_dma_open(struct snd_soc_component *component, struct snd_pcm_substream *substream)
 256 {
 257         struct snd_pcm_runtime *runtime = substream->runtime;
 258         struct device *dev = component->dev;
 259         struct acp_dev_data *adata = dev_get_drvdata(dev);
 260         struct acp_chip_info *chip;
 261         struct acp_stream *stream;
 262         int ret;
 263
 264         stream = kzalloc(sizeof(*stream), GFP_KERNEL);
 265         if (!stream)
 266                 return -ENOMEM;
 267
 268         stream->substream = substream;
 269         chip = dev_get_platdata(dev);
 270         switch (chip->acp_rev) {
 271         case ACP63_PCI_ID:
 272         case ACP70_PCI_ID:
 273         case ACP71_PCI_ID:
 274                 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
 275                         runtime->hw = acp6x_pcm_hardware_playback;
 276                 else
 277                         runtime->hw = acp6x_pcm_hardware_capture;
 278                 break;
 279         default:
 280                 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
 281                         runtime->hw = acp_pcm_hardware_playback;
 282                 else
 283                         runtime->hw = acp_pcm_hardware_capture;
 284                 break;
 285         }
 286
 287         ret = snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, DMA_SIZE);
 288         if (ret) {
 289                 dev_err(component->dev, "set hw constraint HW_PARAM_PERIOD_BYTES failed\n");
 290                 kfree(stream);
 291                 return ret;
 292         }
 293
 294         ret = snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, DMA_SIZE);
 295         if (ret) {
 296                 dev_err(component->dev, "set hw constraint HW_PARAM_BUFFER_BYTES failed\n");
 297                 kfree(stream);
 298                 return ret;
 299         }
 300
 301         ret = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS);
 302         if (ret < 0) {
 303                 dev_err(component->dev, "set integer constraint failed\n");
 304                 kfree(stream);
 305                 return ret;
 306         }
 307         runtime->private_data = stream;
 308
 309         writel(1, ACP_EXTERNAL_INTR_ENB(adata));
 310
 311         spin_lock_irq(&adata->acp_lock);
 312         list_add_tail(&stream->list, &adata->stream_list);
 313         spin_unlock_irq(&adata->acp_lock);
 314
 315         return ret;
 316 }
 317
 318 static int acp_dma_hw_params(struct snd_soc_component *component,
 319                              struct snd_pcm_substream *substream,
 320                              struct snd_pcm_hw_params *params)
 321 {
 322         struct acp_dev_data *adata = snd_soc_component_get_drvdata(component);
 323         struct acp_stream *stream = substream->runtime->private_data;
 324         u64 size = params_buffer_bytes(params);
 325
 326         /* Configure ACP DMA block with params */
 327         config_pte_for_stream(adata, stream);
 328         config_acp_dma(adata, stream, size);
 329
 330         return 0;
 331 }
 332
 333 static snd_pcm_uframes_t acp_dma_pointer(struct snd_soc_component *component,
 334                                          struct snd_pcm_substream *substream)
 335 {
 336         struct device *dev = component->dev;
 337         struct acp_dev_data *adata = dev_get_drvdata(dev);
 338         struct acp_stream *stream = substream->runtime->private_data;
 339         u32 pos, buffersize;
 340         u64 bytescount;
 341
 342         buffersize = frames_to_bytes(substream->runtime,
 343                                      substream->runtime->buffer_size);
 344
 345         bytescount = acp_get_byte_count(adata, stream->dai_id, substream->stream);
 346
 347         if (bytescount > stream->bytescount)
 348                 bytescount -= stream->bytescount;
 349
 350         pos = do_div(bytescount, buffersize);
 351
 352         return bytes_to_frames(substream->runtime, pos);
 353 }
 354
 355 static int acp_dma_new(struct snd_soc_component *component,
 356                        struct snd_soc_pcm_runtime *rtd)
 357 {
 358         struct device *parent = component->dev->parent;
 359
 360         snd_pcm_set_managed_buffer_all(rtd->pcm, SNDRV_DMA_TYPE_DEV,
 361                                        parent, MIN_BUFFER, MAX_BUFFER);
 362         return 0;
 363 }
 364
 365 static int acp_dma_close(struct snd_soc_component *component,
 366                          struct snd_pcm_substream *substream)
 367 {
 368         struct device *dev = component->dev;
 369         struct acp_dev_data *adata = dev_get_drvdata(dev);
 370         struct acp_stream *stream = substream->runtime->private_data;
 371
 372         /* Remove entry from list */
 373         spin_lock_irq(&adata->acp_lock);
 374         list_del(&stream->list);
 375         spin_unlock_irq(&adata->acp_lock);
 376         kfree(stream);
 377
 378         return 0;
 379 }
 380
 381 static const struct snd_soc_component_driver acp_pcm_component = {
 382         .name                   = DRV_NAME,
 383         .open                   = acp_dma_open,
 384         .close                  = acp_dma_close,
 385         .hw_params              = acp_dma_hw_params,
 386         .pointer                = acp_dma_pointer,
 387         .pcm_construct          = acp_dma_new,
 388         .legacy_dai_naming      = 1,
 389 };
 390
 391 int acp_platform_register(struct device *dev)
 392 {
 393         struct acp_dev_data *adata = dev_get_drvdata(dev);
 394         struct snd_soc_dai_driver;
 395         unsigned int status;
 396
 397         status = devm_request_irq(dev, adata->i2s_irq, i2s_irq_handler,
 398                                   IRQF_SHARED, "ACP_I2S_IRQ", adata);
 399         if (status) {
 400                 dev_err(dev, "ACP I2S IRQ request failed\n");
 401                 return status;
 402         }
 403
 404         status = devm_snd_soc_register_component(dev, &acp_pcm_component,
 405                                                  adata->dai_driver,
 406                                                  adata->num_dai);
 407         if (status) {
 408                 dev_err(dev, "Fail to register acp i2s component\n");
 409                 return status;
 410         }
 411
 412         INIT_LIST_HEAD(&adata->stream_list);
 413         spin_lock_init(&adata->acp_lock);
 414
 415         return 0;
 416 }
 417 EXPORT_SYMBOL_NS_GPL(acp_platform_register, "SND_SOC_ACP_COMMON");
 418
 419 int acp_platform_unregister(struct device *dev)
 420 {
 421         struct acp_dev_data *adata = dev_get_drvdata(dev);
 422
 423         if (adata->mach_dev)
 424                 platform_device_unregister(adata->mach_dev);
 425         return 0;
 426 }
 427 EXPORT_SYMBOL_NS_GPL(acp_platform_unregister, "SND_SOC_ACP_COMMON");
 428
 429 MODULE_DESCRIPTION("AMD ACP PCM Driver");
 430 MODULE_LICENSE("Dual BSD/GPL");
 431 MODULE_ALIAS(DRV_NAME);