diff options
Diffstat (limited to 'sound/soc/qcom/qdsp6/q6apm-dai.c')
| -rw-r--r-- | sound/soc/qcom/qdsp6/q6apm-dai.c | 887 |
1 files changed, 887 insertions, 0 deletions
diff --git a/sound/soc/qcom/qdsp6/q6apm-dai.c b/sound/soc/qcom/qdsp6/q6apm-dai.c new file mode 100644 index 0000000000..c90db6daab --- /dev/null +++ b/sound/soc/qcom/qdsp6/q6apm-dai.c @@ -0,0 +1,887 @@ +// SPDX-License-Identifier: GPL-2.0 +// Copyright (c) 2021, Linaro Limited + +#include <linux/init.h> +#include <linux/err.h> +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/slab.h> +#include <sound/soc.h> +#include <sound/soc-dapm.h> +#include <linux/spinlock.h> +#include <sound/pcm.h> +#include <asm/dma.h> +#include <linux/dma-mapping.h> +#include <linux/of_device.h> +#include <sound/pcm_params.h> +#include "q6apm.h" + +#define DRV_NAME "q6apm-dai" + +#define PLAYBACK_MIN_NUM_PERIODS 2 +#define PLAYBACK_MAX_NUM_PERIODS 8 +#define PLAYBACK_MAX_PERIOD_SIZE 65536 +#define PLAYBACK_MIN_PERIOD_SIZE 128 +#define CAPTURE_MIN_NUM_PERIODS 2 +#define CAPTURE_MAX_NUM_PERIODS 8 +#define CAPTURE_MAX_PERIOD_SIZE 4096 +#define CAPTURE_MIN_PERIOD_SIZE 320 +#define BUFFER_BYTES_MAX (PLAYBACK_MAX_NUM_PERIODS * PLAYBACK_MAX_PERIOD_SIZE) +#define BUFFER_BYTES_MIN (PLAYBACK_MIN_NUM_PERIODS * PLAYBACK_MIN_PERIOD_SIZE) +#define COMPR_PLAYBACK_MAX_FRAGMENT_SIZE (128 * 1024) +#define COMPR_PLAYBACK_MAX_NUM_FRAGMENTS (16 * 4) +#define COMPR_PLAYBACK_MIN_FRAGMENT_SIZE (8 * 1024) +#define COMPR_PLAYBACK_MIN_NUM_FRAGMENTS (4) +#define SID_MASK_DEFAULT 0xF + +static const struct snd_compr_codec_caps q6apm_compr_caps = { + .num_descriptors = 1, + .descriptor[0].max_ch = 2, + .descriptor[0].sample_rates = { 8000, 11025, 12000, 16000, 22050, + 24000, 32000, 44100, 48000, 88200, + 96000, 176400, 192000 }, + .descriptor[0].num_sample_rates = 13, + .descriptor[0].bit_rate[0] = 320, + .descriptor[0].bit_rate[1] = 128, + .descriptor[0].num_bitrates = 2, + .descriptor[0].profiles = 0, + .descriptor[0].modes = SND_AUDIOCHANMODE_MP3_STEREO, + .descriptor[0].formats = 0, +}; + +enum stream_state { + Q6APM_STREAM_IDLE = 0, + Q6APM_STREAM_STOPPED, + Q6APM_STREAM_RUNNING, +}; + +struct q6apm_dai_rtd { + struct snd_pcm_substream *substream; + struct snd_compr_stream *cstream; + struct snd_codec codec; + struct snd_compr_params codec_param; + struct snd_dma_buffer dma_buffer; + phys_addr_t phys; + unsigned int pcm_size; + unsigned int pcm_count; + unsigned int pos; /* Buffer position */ + unsigned int periods; + unsigned int bytes_sent; + unsigned int bytes_received; + unsigned int copied_total; + uint16_t bits_per_sample; + uint16_t source; /* Encoding source bit mask */ + uint16_t session_id; + bool next_track; + enum stream_state state; + struct q6apm_graph *graph; + spinlock_t lock; + uint32_t initial_samples_drop; + uint32_t trailing_samples_drop; + bool notify_on_drain; +}; + +struct q6apm_dai_data { + long long sid; +}; + +static struct snd_pcm_hardware q6apm_dai_hardware_capture = { + .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_BLOCK_TRANSFER | + SNDRV_PCM_INFO_MMAP_VALID | SNDRV_PCM_INFO_INTERLEAVED | + SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_RESUME | + SNDRV_PCM_INFO_BATCH), + .formats = (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_LE), + .rates = SNDRV_PCM_RATE_8000_48000, + .rate_min = 8000, + .rate_max = 48000, + .channels_min = 2, + .channels_max = 4, + .buffer_bytes_max = CAPTURE_MAX_NUM_PERIODS * CAPTURE_MAX_PERIOD_SIZE, + .period_bytes_min = CAPTURE_MIN_PERIOD_SIZE, + .period_bytes_max = CAPTURE_MAX_PERIOD_SIZE, + .periods_min = CAPTURE_MIN_NUM_PERIODS, + .periods_max = CAPTURE_MAX_NUM_PERIODS, + .fifo_size = 0, +}; + +static struct snd_pcm_hardware q6apm_dai_hardware_playback = { + .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_BLOCK_TRANSFER | + SNDRV_PCM_INFO_MMAP_VALID | SNDRV_PCM_INFO_INTERLEAVED | + SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_RESUME | + SNDRV_PCM_INFO_BATCH), + .formats = (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_LE), + .rates = SNDRV_PCM_RATE_8000_192000, + .rate_min = 8000, + .rate_max = 192000, + .channels_min = 2, + .channels_max = 8, + .buffer_bytes_max = (PLAYBACK_MAX_NUM_PERIODS * PLAYBACK_MAX_PERIOD_SIZE), + .period_bytes_min = PLAYBACK_MIN_PERIOD_SIZE, + .period_bytes_max = PLAYBACK_MAX_PERIOD_SIZE, + .periods_min = PLAYBACK_MIN_NUM_PERIODS, + .periods_max = PLAYBACK_MAX_NUM_PERIODS, + .fifo_size = 0, +}; + +static void event_handler(uint32_t opcode, uint32_t token, uint32_t *payload, void *priv) +{ + struct q6apm_dai_rtd *prtd = priv; + struct snd_pcm_substream *substream = prtd->substream; + unsigned long flags; + + switch (opcode) { + case APM_CLIENT_EVENT_CMD_EOS_DONE: + prtd->state = Q6APM_STREAM_STOPPED; + break; + case APM_CLIENT_EVENT_DATA_WRITE_DONE: + spin_lock_irqsave(&prtd->lock, flags); + prtd->pos += prtd->pcm_count; + spin_unlock_irqrestore(&prtd->lock, flags); + snd_pcm_period_elapsed(substream); + if (prtd->state == Q6APM_STREAM_RUNNING) + q6apm_write_async(prtd->graph, prtd->pcm_count, 0, 0, 0); + + break; + case APM_CLIENT_EVENT_DATA_READ_DONE: + spin_lock_irqsave(&prtd->lock, flags); + prtd->pos += prtd->pcm_count; + spin_unlock_irqrestore(&prtd->lock, flags); + snd_pcm_period_elapsed(substream); + if (prtd->state == Q6APM_STREAM_RUNNING) + q6apm_read(prtd->graph); + + break; + default: + break; + } +} + +static void event_handler_compr(uint32_t opcode, uint32_t token, + uint32_t *payload, void *priv) +{ + struct q6apm_dai_rtd *prtd = priv; + struct snd_compr_stream *substream = prtd->cstream; + unsigned long flags; + uint32_t wflags = 0; + uint64_t avail; + uint32_t bytes_written, bytes_to_write; + bool is_last_buffer = false; + + switch (opcode) { + case APM_CLIENT_EVENT_CMD_EOS_DONE: + spin_lock_irqsave(&prtd->lock, flags); + if (prtd->notify_on_drain) { + snd_compr_drain_notify(prtd->cstream); + prtd->notify_on_drain = false; + } else { + prtd->state = Q6APM_STREAM_STOPPED; + } + spin_unlock_irqrestore(&prtd->lock, flags); + break; + case APM_CLIENT_EVENT_DATA_WRITE_DONE: + spin_lock_irqsave(&prtd->lock, flags); + bytes_written = token >> APM_WRITE_TOKEN_LEN_SHIFT; + prtd->copied_total += bytes_written; + snd_compr_fragment_elapsed(substream); + + if (prtd->state != Q6APM_STREAM_RUNNING) { + spin_unlock_irqrestore(&prtd->lock, flags); + break; + } + + avail = prtd->bytes_received - prtd->bytes_sent; + + if (avail > prtd->pcm_count) { + bytes_to_write = prtd->pcm_count; + } else { + if (substream->partial_drain || prtd->notify_on_drain) + is_last_buffer = true; + bytes_to_write = avail; + } + + if (bytes_to_write) { + if (substream->partial_drain && is_last_buffer) + wflags |= APM_LAST_BUFFER_FLAG; + + q6apm_write_async(prtd->graph, + bytes_to_write, 0, 0, wflags); + + prtd->bytes_sent += bytes_to_write; + + if (prtd->notify_on_drain && is_last_buffer) + audioreach_shared_memory_send_eos(prtd->graph); + } + + spin_unlock_irqrestore(&prtd->lock, flags); + break; + default: + break; + } +} + +static int q6apm_dai_prepare(struct snd_soc_component *component, + struct snd_pcm_substream *substream) +{ + struct snd_pcm_runtime *runtime = substream->runtime; + struct q6apm_dai_rtd *prtd = runtime->private_data; + struct audioreach_module_config cfg; + struct device *dev = component->dev; + struct q6apm_dai_data *pdata; + int ret; + + pdata = snd_soc_component_get_drvdata(component); + if (!pdata) + return -EINVAL; + + if (!prtd || !prtd->graph) { + dev_err(dev, "%s: private data null or audio client freed\n", __func__); + return -EINVAL; + } + + cfg.direction = substream->stream; + cfg.sample_rate = runtime->rate; + cfg.num_channels = runtime->channels; + cfg.bit_width = prtd->bits_per_sample; + cfg.fmt = SND_AUDIOCODEC_PCM; + + if (prtd->state) { + /* clear the previous setup if any */ + q6apm_graph_stop(prtd->graph); + q6apm_unmap_memory_regions(prtd->graph, substream->stream); + } + + prtd->pcm_count = snd_pcm_lib_period_bytes(substream); + prtd->pos = 0; + /* rate and channels are sent to audio driver */ + ret = q6apm_graph_media_format_shmem(prtd->graph, &cfg); + if (ret < 0) { + dev_err(dev, "%s: q6apm_open_write failed\n", __func__); + return ret; + } + + ret = q6apm_graph_media_format_pcm(prtd->graph, &cfg); + if (ret < 0) + dev_err(dev, "%s: CMD Format block failed\n", __func__); + + ret = q6apm_map_memory_regions(prtd->graph, substream->stream, prtd->phys, + (prtd->pcm_size / prtd->periods), prtd->periods); + + if (ret < 0) { + dev_err(dev, "Audio Start: Buffer Allocation failed rc = %d\n", ret); + return -ENOMEM; + } + + ret = q6apm_graph_prepare(prtd->graph); + if (ret) { + dev_err(dev, "Failed to prepare Graph %d\n", ret); + return ret; + } + + ret = q6apm_graph_start(prtd->graph); + if (ret) { + dev_err(dev, "Failed to Start Graph %d\n", ret); + return ret; + } + + if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) { + int i; + /* Queue the buffers for Capture ONLY after graph is started */ + for (i = 0; i < runtime->periods; i++) + q6apm_read(prtd->graph); + + } + + /* Now that graph as been prepared and started update the internal state accordingly */ + prtd->state = Q6APM_STREAM_RUNNING; + + return 0; +} + +static int q6apm_dai_trigger(struct snd_soc_component *component, + struct snd_pcm_substream *substream, int cmd) +{ + struct snd_pcm_runtime *runtime = substream->runtime; + struct q6apm_dai_rtd *prtd = runtime->private_data; + int ret = 0; + + switch (cmd) { + case SNDRV_PCM_TRIGGER_START: + case SNDRV_PCM_TRIGGER_RESUME: + case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: + /* start writing buffers for playback only as we already queued capture buffers */ + if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) + ret = q6apm_write_async(prtd->graph, prtd->pcm_count, 0, 0, 0); + break; + case SNDRV_PCM_TRIGGER_STOP: + /* TODO support be handled via SoftPause Module */ + prtd->state = Q6APM_STREAM_STOPPED; + break; + case SNDRV_PCM_TRIGGER_SUSPEND: + case SNDRV_PCM_TRIGGER_PAUSE_PUSH: + break; + default: + ret = -EINVAL; + break; + } + + return ret; +} + +static int q6apm_dai_open(struct snd_soc_component *component, + struct snd_pcm_substream *substream) +{ + struct snd_pcm_runtime *runtime = substream->runtime; + struct snd_soc_pcm_runtime *soc_prtd = substream->private_data; + struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(soc_prtd, 0); + struct device *dev = component->dev; + struct q6apm_dai_data *pdata; + struct q6apm_dai_rtd *prtd; + int graph_id, ret; + + graph_id = cpu_dai->driver->id; + + pdata = snd_soc_component_get_drvdata(component); + if (!pdata) { + dev_err(dev, "Drv data not found ..\n"); + return -EINVAL; + } + + prtd = kzalloc(sizeof(*prtd), GFP_KERNEL); + if (prtd == NULL) + return -ENOMEM; + + spin_lock_init(&prtd->lock); + prtd->substream = substream; + prtd->graph = q6apm_graph_open(dev, (q6apm_cb)event_handler, prtd, graph_id); + if (IS_ERR(prtd->graph)) { + dev_err(dev, "%s: Could not allocate memory\n", __func__); + ret = PTR_ERR(prtd->graph); + goto err; + } + + if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) + runtime->hw = q6apm_dai_hardware_playback; + else if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) + runtime->hw = q6apm_dai_hardware_capture; + + /* Ensure that buffer size is a multiple of period size */ + ret = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS); + if (ret < 0) { + dev_err(dev, "snd_pcm_hw_constraint_integer failed\n"); + goto err; + } + + if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { + ret = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, + BUFFER_BYTES_MIN, BUFFER_BYTES_MAX); + if (ret < 0) { + dev_err(dev, "constraint for buffer bytes min max ret = %d\n", ret); + goto err; + } + } + + ret = snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 32); + if (ret < 0) { + dev_err(dev, "constraint for period bytes step ret = %d\n", ret); + goto err; + } + + ret = snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, 32); + if (ret < 0) { + dev_err(dev, "constraint for buffer bytes step ret = %d\n", ret); + goto err; + } + + runtime->private_data = prtd; + runtime->dma_bytes = BUFFER_BYTES_MAX; + if (pdata->sid < 0) + prtd->phys = substream->dma_buffer.addr; + else + prtd->phys = substream->dma_buffer.addr | (pdata->sid << 32); + + return 0; +err: + kfree(prtd); + + return ret; +} + +static int q6apm_dai_close(struct snd_soc_component *component, + struct snd_pcm_substream *substream) +{ + struct snd_pcm_runtime *runtime = substream->runtime; + struct q6apm_dai_rtd *prtd = runtime->private_data; + + if (prtd->state) { /* only stop graph that is started */ + q6apm_graph_stop(prtd->graph); + q6apm_unmap_memory_regions(prtd->graph, substream->stream); + } + + q6apm_graph_close(prtd->graph); + prtd->graph = NULL; + kfree(prtd); + runtime->private_data = NULL; + + return 0; +} + +static snd_pcm_uframes_t q6apm_dai_pointer(struct snd_soc_component *component, + struct snd_pcm_substream *substream) +{ + struct snd_pcm_runtime *runtime = substream->runtime; + struct q6apm_dai_rtd *prtd = runtime->private_data; + snd_pcm_uframes_t ptr; + unsigned long flags; + + spin_lock_irqsave(&prtd->lock, flags); + if (prtd->pos == prtd->pcm_size) + prtd->pos = 0; + + ptr = bytes_to_frames(runtime, prtd->pos); + spin_unlock_irqrestore(&prtd->lock, flags); + + return ptr; +} + +static int q6apm_dai_hw_params(struct snd_soc_component *component, + struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *params) +{ + struct snd_pcm_runtime *runtime = substream->runtime; + struct q6apm_dai_rtd *prtd = runtime->private_data; + + prtd->pcm_size = params_buffer_bytes(params); + prtd->periods = params_periods(params); + + switch (params_format(params)) { + case SNDRV_PCM_FORMAT_S16_LE: + prtd->bits_per_sample = 16; + break; + case SNDRV_PCM_FORMAT_S24_LE: + prtd->bits_per_sample = 24; + break; + default: + return -EINVAL; + } + + return 0; +} + +static int q6apm_dai_pcm_new(struct snd_soc_component *component, struct snd_soc_pcm_runtime *rtd) +{ + int size = BUFFER_BYTES_MAX; + + return snd_pcm_set_fixed_buffer_all(rtd->pcm, SNDRV_DMA_TYPE_DEV, component->dev, size); +} + +static int q6apm_dai_compr_open(struct snd_soc_component *component, + struct snd_compr_stream *stream) +{ + struct snd_soc_pcm_runtime *rtd = stream->private_data; + struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0); + struct snd_compr_runtime *runtime = stream->runtime; + struct q6apm_dai_rtd *prtd; + struct q6apm_dai_data *pdata; + struct device *dev = component->dev; + int ret, size; + int graph_id; + + graph_id = cpu_dai->driver->id; + pdata = snd_soc_component_get_drvdata(component); + if (!pdata) + return -EINVAL; + + prtd = kzalloc(sizeof(*prtd), GFP_KERNEL); + if (prtd == NULL) + return -ENOMEM; + + prtd->cstream = stream; + prtd->graph = q6apm_graph_open(dev, (q6apm_cb)event_handler_compr, prtd, graph_id); + if (IS_ERR(prtd->graph)) { + ret = PTR_ERR(prtd->graph); + kfree(prtd); + return ret; + } + + runtime->private_data = prtd; + runtime->dma_bytes = BUFFER_BYTES_MAX; + size = COMPR_PLAYBACK_MAX_FRAGMENT_SIZE * COMPR_PLAYBACK_MAX_NUM_FRAGMENTS; + ret = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, dev, size, &prtd->dma_buffer); + if (ret) + return ret; + + if (pdata->sid < 0) + prtd->phys = prtd->dma_buffer.addr; + else + prtd->phys = prtd->dma_buffer.addr | (pdata->sid << 32); + + snd_compr_set_runtime_buffer(stream, &prtd->dma_buffer); + spin_lock_init(&prtd->lock); + + q6apm_enable_compress_module(dev, prtd->graph, true); + return 0; +} + +static int q6apm_dai_compr_free(struct snd_soc_component *component, + struct snd_compr_stream *stream) +{ + struct snd_compr_runtime *runtime = stream->runtime; + struct q6apm_dai_rtd *prtd = runtime->private_data; + + q6apm_graph_stop(prtd->graph); + q6apm_unmap_memory_regions(prtd->graph, SNDRV_PCM_STREAM_PLAYBACK); + q6apm_graph_close(prtd->graph); + snd_dma_free_pages(&prtd->dma_buffer); + prtd->graph = NULL; + kfree(prtd); + runtime->private_data = NULL; + + return 0; +} + +static int q6apm_dai_compr_get_caps(struct snd_soc_component *component, + struct snd_compr_stream *stream, + struct snd_compr_caps *caps) +{ + caps->direction = SND_COMPRESS_PLAYBACK; + caps->min_fragment_size = COMPR_PLAYBACK_MIN_FRAGMENT_SIZE; + caps->max_fragment_size = COMPR_PLAYBACK_MAX_FRAGMENT_SIZE; + caps->min_fragments = COMPR_PLAYBACK_MIN_NUM_FRAGMENTS; + caps->max_fragments = COMPR_PLAYBACK_MAX_NUM_FRAGMENTS; + caps->num_codecs = 3; + caps->codecs[0] = SND_AUDIOCODEC_MP3; + caps->codecs[1] = SND_AUDIOCODEC_AAC; + caps->codecs[2] = SND_AUDIOCODEC_FLAC; + + return 0; +} + +static int q6apm_dai_compr_get_codec_caps(struct snd_soc_component *component, + struct snd_compr_stream *stream, + struct snd_compr_codec_caps *codec) +{ + switch (codec->codec) { + case SND_AUDIOCODEC_MP3: + *codec = q6apm_compr_caps; + break; + default: + break; + } + + return 0; +} + +static int q6apm_dai_compr_pointer(struct snd_soc_component *component, + struct snd_compr_stream *stream, + struct snd_compr_tstamp *tstamp) +{ + struct snd_compr_runtime *runtime = stream->runtime; + struct q6apm_dai_rtd *prtd = runtime->private_data; + unsigned long flags; + + spin_lock_irqsave(&prtd->lock, flags); + tstamp->copied_total = prtd->copied_total; + tstamp->byte_offset = prtd->copied_total % prtd->pcm_size; + spin_unlock_irqrestore(&prtd->lock, flags); + + return 0; +} + +static int q6apm_dai_compr_trigger(struct snd_soc_component *component, + struct snd_compr_stream *stream, int cmd) +{ + struct snd_compr_runtime *runtime = stream->runtime; + struct q6apm_dai_rtd *prtd = runtime->private_data; + int ret = 0; + + switch (cmd) { + case SNDRV_PCM_TRIGGER_START: + case SNDRV_PCM_TRIGGER_RESUME: + case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: + ret = q6apm_write_async(prtd->graph, prtd->pcm_count, 0, 0, NO_TIMESTAMP); + break; + case SNDRV_PCM_TRIGGER_STOP: + break; + case SNDRV_PCM_TRIGGER_SUSPEND: + case SNDRV_PCM_TRIGGER_PAUSE_PUSH: + break; + case SND_COMPR_TRIGGER_NEXT_TRACK: + prtd->next_track = true; + break; + case SND_COMPR_TRIGGER_DRAIN: + case SND_COMPR_TRIGGER_PARTIAL_DRAIN: + prtd->notify_on_drain = true; + break; + default: + ret = -EINVAL; + break; + } + + return ret; +} + +static int q6apm_dai_compr_ack(struct snd_soc_component *component, struct snd_compr_stream *stream, + size_t count) +{ + struct snd_compr_runtime *runtime = stream->runtime; + struct q6apm_dai_rtd *prtd = runtime->private_data; + unsigned long flags; + + spin_lock_irqsave(&prtd->lock, flags); + prtd->bytes_received += count; + spin_unlock_irqrestore(&prtd->lock, flags); + + return count; +} + +static int q6apm_dai_compr_set_params(struct snd_soc_component *component, + struct snd_compr_stream *stream, + struct snd_compr_params *params) +{ + struct snd_compr_runtime *runtime = stream->runtime; + struct q6apm_dai_rtd *prtd = runtime->private_data; + struct q6apm_dai_data *pdata; + struct audioreach_module_config cfg; + struct snd_codec *codec = ¶ms->codec; + int dir = stream->direction; + int ret; + + pdata = snd_soc_component_get_drvdata(component); + if (!pdata) + return -EINVAL; + + prtd->periods = runtime->fragments; + prtd->pcm_count = runtime->fragment_size; + prtd->pcm_size = runtime->fragments * runtime->fragment_size; + prtd->bits_per_sample = 16; + + prtd->pos = 0; + + if (prtd->next_track != true) { + memcpy(&prtd->codec, codec, sizeof(*codec)); + + ret = q6apm_set_real_module_id(component->dev, prtd->graph, codec->id); + if (ret) + return ret; + + cfg.direction = dir; + cfg.sample_rate = codec->sample_rate; + cfg.num_channels = 2; + cfg.bit_width = prtd->bits_per_sample; + cfg.fmt = codec->id; + memcpy(&cfg.codec, codec, sizeof(*codec)); + + ret = q6apm_graph_media_format_shmem(prtd->graph, &cfg); + if (ret < 0) + return ret; + + ret = q6apm_graph_media_format_pcm(prtd->graph, &cfg); + if (ret) + return ret; + + ret = q6apm_map_memory_regions(prtd->graph, SNDRV_PCM_STREAM_PLAYBACK, + prtd->phys, (prtd->pcm_size / prtd->periods), + prtd->periods); + if (ret < 0) + return -ENOMEM; + + ret = q6apm_graph_prepare(prtd->graph); + if (ret) + return ret; + + ret = q6apm_graph_start(prtd->graph); + if (ret) + return ret; + + } else { + cfg.direction = dir; + cfg.sample_rate = codec->sample_rate; + cfg.num_channels = 2; + cfg.bit_width = prtd->bits_per_sample; + cfg.fmt = codec->id; + memcpy(&cfg.codec, codec, sizeof(*codec)); + + ret = audioreach_compr_set_param(prtd->graph, &cfg); + if (ret < 0) + return ret; + } + prtd->state = Q6APM_STREAM_RUNNING; + + return 0; +} + +static int q6apm_dai_compr_set_metadata(struct snd_soc_component *component, + struct snd_compr_stream *stream, + struct snd_compr_metadata *metadata) +{ + struct snd_compr_runtime *runtime = stream->runtime; + struct q6apm_dai_rtd *prtd = runtime->private_data; + int ret = 0; + + switch (metadata->key) { + case SNDRV_COMPRESS_ENCODER_PADDING: + prtd->trailing_samples_drop = metadata->value[0]; + q6apm_remove_trailing_silence(component->dev, prtd->graph, + prtd->trailing_samples_drop); + break; + case SNDRV_COMPRESS_ENCODER_DELAY: + prtd->initial_samples_drop = metadata->value[0]; + q6apm_remove_initial_silence(component->dev, prtd->graph, + prtd->initial_samples_drop); + break; + default: + ret = -EINVAL; + break; + } + + return ret; +} + +static int q6apm_dai_compr_mmap(struct snd_soc_component *component, + struct snd_compr_stream *stream, + struct vm_area_struct *vma) +{ + struct snd_compr_runtime *runtime = stream->runtime; + struct q6apm_dai_rtd *prtd = runtime->private_data; + struct device *dev = component->dev; + + return dma_mmap_coherent(dev, vma, prtd->dma_buffer.area, prtd->dma_buffer.addr, + prtd->dma_buffer.bytes); +} + +static int q6apm_compr_copy(struct snd_soc_component *component, + struct snd_compr_stream *stream, char __user *buf, + size_t count) +{ + struct snd_compr_runtime *runtime = stream->runtime; + struct q6apm_dai_rtd *prtd = runtime->private_data; + void *dstn; + unsigned long flags; + size_t copy; + u32 wflags = 0; + u32 app_pointer; + u32 bytes_received; + uint32_t bytes_to_write; + int avail, bytes_in_flight = 0; + + bytes_received = prtd->bytes_received; + + /** + * Make sure that next track data pointer is aligned at 32 bit boundary + * This is a Mandatory requirement from DSP data buffers alignment + */ + if (prtd->next_track) + bytes_received = ALIGN(prtd->bytes_received, prtd->pcm_count); + + app_pointer = bytes_received/prtd->pcm_size; + app_pointer = bytes_received - (app_pointer * prtd->pcm_size); + dstn = prtd->dma_buffer.area + app_pointer; + + if (count < prtd->pcm_size - app_pointer) { + if (copy_from_user(dstn, buf, count)) + return -EFAULT; + } else { + copy = prtd->pcm_size - app_pointer; + if (copy_from_user(dstn, buf, copy)) + return -EFAULT; + if (copy_from_user(prtd->dma_buffer.area, buf + copy, count - copy)) + return -EFAULT; + } + + spin_lock_irqsave(&prtd->lock, flags); + bytes_in_flight = prtd->bytes_received - prtd->copied_total; + + if (prtd->next_track) { + prtd->next_track = false; + prtd->copied_total = ALIGN(prtd->copied_total, prtd->pcm_count); + prtd->bytes_sent = ALIGN(prtd->bytes_sent, prtd->pcm_count); + } + + prtd->bytes_received = bytes_received + count; + + /* Kick off the data to dsp if its starving!! */ + if (prtd->state == Q6APM_STREAM_RUNNING && (bytes_in_flight == 0)) { + bytes_to_write = prtd->pcm_count; + avail = prtd->bytes_received - prtd->bytes_sent; + + if (avail < prtd->pcm_count) + bytes_to_write = avail; + + q6apm_write_async(prtd->graph, bytes_to_write, 0, 0, wflags); + prtd->bytes_sent += bytes_to_write; + } + + spin_unlock_irqrestore(&prtd->lock, flags); + + return count; +} + +static const struct snd_compress_ops q6apm_dai_compress_ops = { + .open = q6apm_dai_compr_open, + .free = q6apm_dai_compr_free, + .get_caps = q6apm_dai_compr_get_caps, + .get_codec_caps = q6apm_dai_compr_get_codec_caps, + .pointer = q6apm_dai_compr_pointer, + .trigger = q6apm_dai_compr_trigger, + .ack = q6apm_dai_compr_ack, + .set_params = q6apm_dai_compr_set_params, + .set_metadata = q6apm_dai_compr_set_metadata, + .mmap = q6apm_dai_compr_mmap, + .copy = q6apm_compr_copy, +}; + +static const struct snd_soc_component_driver q6apm_fe_dai_component = { + .name = DRV_NAME, + .open = q6apm_dai_open, + .close = q6apm_dai_close, + .prepare = q6apm_dai_prepare, + .pcm_construct = q6apm_dai_pcm_new, + .hw_params = q6apm_dai_hw_params, + .pointer = q6apm_dai_pointer, + .trigger = q6apm_dai_trigger, + .compress_ops = &q6apm_dai_compress_ops, + .use_dai_pcm_id = true, +}; + +static int q6apm_dai_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct device_node *node = dev->of_node; + struct q6apm_dai_data *pdata; + struct of_phandle_args args; + int rc; + + pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL); + if (!pdata) + return -ENOMEM; + + rc = of_parse_phandle_with_fixed_args(node, "iommus", 1, 0, &args); + if (rc < 0) + pdata->sid = -1; + else + pdata->sid = args.args[0] & SID_MASK_DEFAULT; + + dev_set_drvdata(dev, pdata); + + return devm_snd_soc_register_component(dev, &q6apm_fe_dai_component, NULL, 0); +} + +#ifdef CONFIG_OF +static const struct of_device_id q6apm_dai_device_id[] = { + { .compatible = "qcom,q6apm-dais" }, + {}, +}; +MODULE_DEVICE_TABLE(of, q6apm_dai_device_id); +#endif + +static struct platform_driver q6apm_dai_platform_driver = { + .driver = { + .name = "q6apm-dai", + .of_match_table = of_match_ptr(q6apm_dai_device_id), + }, + .probe = q6apm_dai_probe, +}; +module_platform_driver(q6apm_dai_platform_driver); + +MODULE_DESCRIPTION("Q6APM dai driver"); +MODULE_LICENSE("GPL"); |