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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 or4// 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 component12 */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 29static 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 50static 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 71static 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 91static 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 111int 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->platform;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 adata->mach_dev = platform_device_register_data(adata->dev, mach->drv_name,129 PLATFORM_DEVID_NONE, mach, size);130 }131 if (IS_ERR(adata->mach_dev))132 dev_warn(adata->dev, "Unable to register Machine device\n");133 return 0;134}135EXPORT_SYMBOL_NS_GPL(acp_machine_select, SND_SOC_ACP_COMMON);136 137static irqreturn_t i2s_irq_handler(int irq, void *data)138{139 struct acp_dev_data *adata = data;140 struct acp_resource *rsrc = adata->rsrc;141 struct acp_stream *stream;142 u16 i2s_flag = 0;143 u32 ext_intr_stat, ext_intr_stat1;144 145 if (!adata)146 return IRQ_NONE;147 148 if (adata->rsrc->no_of_ctrls == 2)149 ext_intr_stat1 = readl(ACP_EXTERNAL_INTR_STAT(adata, (rsrc->irqp_used - 1)));150 151 ext_intr_stat = readl(ACP_EXTERNAL_INTR_STAT(adata, rsrc->irqp_used));152 153 spin_lock(&adata->acp_lock);154 list_for_each_entry(stream, &adata->stream_list, list) {155 if (ext_intr_stat & stream->irq_bit) {156 writel(stream->irq_bit,157 ACP_EXTERNAL_INTR_STAT(adata, rsrc->irqp_used));158 snd_pcm_period_elapsed(stream->substream);159 i2s_flag = 1;160 }161 if (adata->rsrc->no_of_ctrls == 2) {162 if (ext_intr_stat1 & stream->irq_bit) {163 writel(stream->irq_bit, ACP_EXTERNAL_INTR_STAT(adata,164 (rsrc->irqp_used - 1)));165 snd_pcm_period_elapsed(stream->substream);166 i2s_flag = 1;167 }168 }169 }170 spin_unlock(&adata->acp_lock);171 if (i2s_flag)172 return IRQ_HANDLED;173 174 return IRQ_NONE;175}176 177void config_pte_for_stream(struct acp_dev_data *adata, struct acp_stream *stream)178{179 struct acp_resource *rsrc = adata->rsrc;180 u32 reg_val;181 182 reg_val = rsrc->sram_pte_offset;183 stream->reg_offset = 0x02000000;184 185 writel((reg_val + GRP1_OFFSET) | BIT(31), adata->acp_base + ACPAXI2AXI_ATU_BASE_ADDR_GRP_1);186 writel(PAGE_SIZE_4K_ENABLE, adata->acp_base + ACPAXI2AXI_ATU_PAGE_SIZE_GRP_1);187 188 writel((reg_val + GRP2_OFFSET) | BIT(31), adata->acp_base + ACPAXI2AXI_ATU_BASE_ADDR_GRP_2);189 writel(PAGE_SIZE_4K_ENABLE, adata->acp_base + ACPAXI2AXI_ATU_PAGE_SIZE_GRP_2);190 191 writel(reg_val | BIT(31), adata->acp_base + ACPAXI2AXI_ATU_BASE_ADDR_GRP_5);192 writel(PAGE_SIZE_4K_ENABLE, adata->acp_base + ACPAXI2AXI_ATU_PAGE_SIZE_GRP_5);193 194 writel(0x01, adata->acp_base + ACPAXI2AXI_ATU_CTRL);195}196EXPORT_SYMBOL_NS_GPL(config_pte_for_stream, SND_SOC_ACP_COMMON);197 198void config_acp_dma(struct acp_dev_data *adata, struct acp_stream *stream, int size)199{200 struct snd_pcm_substream *substream = stream->substream;201 struct acp_resource *rsrc = adata->rsrc;202 dma_addr_t addr = substream->dma_buffer.addr;203 int num_pages = (PAGE_ALIGN(size) >> PAGE_SHIFT);204 u32 low, high, val;205 u16 page_idx;206 207 switch (adata->platform) {208 case ACP70:209 case ACP71:210 switch (stream->dai_id) {211 case I2S_SP_INSTANCE:212 if (stream->dir == SNDRV_PCM_STREAM_PLAYBACK)213 val = 0x0;214 else215 val = 0x1000;216 break;217 case I2S_BT_INSTANCE:218 if (stream->dir == SNDRV_PCM_STREAM_PLAYBACK)219 val = 0x2000;220 else221 val = 0x3000;222 break;223 case I2S_HS_INSTANCE:224 if (stream->dir == SNDRV_PCM_STREAM_PLAYBACK)225 val = 0x4000;226 else227 val = 0x5000;228 break;229 case DMIC_INSTANCE:230 val = 0x6000;231 break;232 default:233 dev_err(adata->dev, "Invalid dai id %x\n", stream->dai_id);234 return;235 }236 break;237 default:238 val = stream->pte_offset;239 break;240 }241 242 for (page_idx = 0; page_idx < num_pages; page_idx++) {243 /* Load the low address of page int ACP SRAM through SRBM */244 low = lower_32_bits(addr);245 high = upper_32_bits(addr);246 writel(low, adata->acp_base + rsrc->scratch_reg_offset + val);247 high |= BIT(31);248 writel(high, adata->acp_base + rsrc->scratch_reg_offset + val + 4);249 250 /* Move to next physically contiguous page */251 val += 8;252 addr += PAGE_SIZE;253 }254}255EXPORT_SYMBOL_NS_GPL(config_acp_dma, SND_SOC_ACP_COMMON);256 257static int acp_dma_open(struct snd_soc_component *component, struct snd_pcm_substream *substream)258{259 struct snd_pcm_runtime *runtime = substream->runtime;260 struct device *dev = component->dev;261 struct acp_dev_data *adata = dev_get_drvdata(dev);262 struct acp_chip_info *chip;263 struct acp_stream *stream;264 int ret;265 266 stream = kzalloc(sizeof(*stream), GFP_KERNEL);267 if (!stream)268 return -ENOMEM;269 270 stream->substream = substream;271 chip = dev_get_platdata(dev);272 switch (chip->acp_rev) {273 case ACP63_DEV:274 case ACP70_DEV:275 case ACP71_DEV:276 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)277 runtime->hw = acp6x_pcm_hardware_playback;278 else279 runtime->hw = acp6x_pcm_hardware_capture;280 break;281 default:282 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)283 runtime->hw = acp_pcm_hardware_playback;284 else285 runtime->hw = acp_pcm_hardware_capture;286 break;287 }288 289 ret = snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, DMA_SIZE);290 if (ret) {291 dev_err(component->dev, "set hw constraint HW_PARAM_PERIOD_BYTES failed\n");292 kfree(stream);293 return ret;294 }295 296 ret = snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, DMA_SIZE);297 if (ret) {298 dev_err(component->dev, "set hw constraint HW_PARAM_BUFFER_BYTES failed\n");299 kfree(stream);300 return ret;301 }302 303 ret = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS);304 if (ret < 0) {305 dev_err(component->dev, "set integer constraint failed\n");306 kfree(stream);307 return ret;308 }309 runtime->private_data = stream;310 311 writel(1, ACP_EXTERNAL_INTR_ENB(adata));312 313 spin_lock_irq(&adata->acp_lock);314 list_add_tail(&stream->list, &adata->stream_list);315 spin_unlock_irq(&adata->acp_lock);316 317 return ret;318}319 320static int acp_dma_hw_params(struct snd_soc_component *component,321 struct snd_pcm_substream *substream,322 struct snd_pcm_hw_params *params)323{324 struct acp_dev_data *adata = snd_soc_component_get_drvdata(component);325 struct acp_stream *stream = substream->runtime->private_data;326 u64 size = params_buffer_bytes(params);327 328 /* Configure ACP DMA block with params */329 config_pte_for_stream(adata, stream);330 config_acp_dma(adata, stream, size);331 332 return 0;333}334 335static snd_pcm_uframes_t acp_dma_pointer(struct snd_soc_component *component,336 struct snd_pcm_substream *substream)337{338 struct device *dev = component->dev;339 struct acp_dev_data *adata = dev_get_drvdata(dev);340 struct acp_stream *stream = substream->runtime->private_data;341 u32 pos, buffersize;342 u64 bytescount;343 344 buffersize = frames_to_bytes(substream->runtime,345 substream->runtime->buffer_size);346 347 bytescount = acp_get_byte_count(adata, stream->dai_id, substream->stream);348 349 if (bytescount > stream->bytescount)350 bytescount -= stream->bytescount;351 352 pos = do_div(bytescount, buffersize);353 354 return bytes_to_frames(substream->runtime, pos);355}356 357static int acp_dma_new(struct snd_soc_component *component,358 struct snd_soc_pcm_runtime *rtd)359{360 struct device *parent = component->dev->parent;361 362 snd_pcm_set_managed_buffer_all(rtd->pcm, SNDRV_DMA_TYPE_DEV,363 parent, MIN_BUFFER, MAX_BUFFER);364 return 0;365}366 367static int acp_dma_close(struct snd_soc_component *component,368 struct snd_pcm_substream *substream)369{370 struct device *dev = component->dev;371 struct acp_dev_data *adata = dev_get_drvdata(dev);372 struct acp_stream *stream = substream->runtime->private_data;373 374 /* Remove entry from list */375 spin_lock_irq(&adata->acp_lock);376 list_del(&stream->list);377 spin_unlock_irq(&adata->acp_lock);378 kfree(stream);379 380 return 0;381}382 383static const struct snd_soc_component_driver acp_pcm_component = {384 .name = DRV_NAME,385 .open = acp_dma_open,386 .close = acp_dma_close,387 .hw_params = acp_dma_hw_params,388 .pointer = acp_dma_pointer,389 .pcm_construct = acp_dma_new,390 .legacy_dai_naming = 1,391};392 393int acp_platform_register(struct device *dev)394{395 struct acp_dev_data *adata = dev_get_drvdata(dev);396 struct snd_soc_dai_driver;397 unsigned int status;398 399 status = devm_request_irq(dev, adata->i2s_irq, i2s_irq_handler,400 IRQF_SHARED, "ACP_I2S_IRQ", adata);401 if (status) {402 dev_err(dev, "ACP I2S IRQ request failed\n");403 return status;404 }405 406 status = devm_snd_soc_register_component(dev, &acp_pcm_component,407 adata->dai_driver,408 adata->num_dai);409 if (status) {410 dev_err(dev, "Fail to register acp i2s component\n");411 return status;412 }413 414 INIT_LIST_HEAD(&adata->stream_list);415 spin_lock_init(&adata->acp_lock);416 417 return 0;418}419EXPORT_SYMBOL_NS_GPL(acp_platform_register, SND_SOC_ACP_COMMON);420 421int acp_platform_unregister(struct device *dev)422{423 struct acp_dev_data *adata = dev_get_drvdata(dev);424 425 if (adata->mach_dev)426 platform_device_unregister(adata->mach_dev);427 return 0;428}429EXPORT_SYMBOL_NS_GPL(acp_platform_unregister, SND_SOC_ACP_COMMON);430 431MODULE_DESCRIPTION("AMD ACP PCM Driver");432MODULE_LICENSE("Dual BSD/GPL");433MODULE_ALIAS(DRV_NAME);434