Signed-off-by: Srinivas Kandagatla srinivas.kandagatla@linaro.org --- sound/soc/qcom/Kconfig | 4 + sound/soc/qcom/audioreach/Makefile | 2 + sound/soc/qcom/audioreach/q6apm-dai.c | 494 ++++++++++++++++++++++++++ 3 files changed, 500 insertions(+) create mode 100644 sound/soc/qcom/audioreach/q6apm-dai.c
diff --git a/sound/soc/qcom/Kconfig b/sound/soc/qcom/Kconfig index c0e7f4cb328f..258fe9ef26f3 100644 --- a/sound/soc/qcom/Kconfig +++ b/sound/soc/qcom/Kconfig @@ -103,10 +103,14 @@ config SND_SOC_QDSP6 audio drivers. This includes q6asm, q6adm, q6afe interfaces to DSP using apr.
+config SND_SOC_QCOM_APM_DAI + tristate + config SND_SOC_QCOM_AUDIOREACH tristate "SoC ALSA audio drives for Qualcomm AUDIOREACH" depends on QCOM_GPR select SND_SOC_TOPOLOGY + select SND_SOC_QCOM_APM_DAI help Support for AudioReach in QDSP
diff --git a/sound/soc/qcom/audioreach/Makefile b/sound/soc/qcom/audioreach/Makefile index 65ea488e4cc8..7160bddbb1fb 100644 --- a/sound/soc/qcom/audioreach/Makefile +++ b/sound/soc/qcom/audioreach/Makefile @@ -1,6 +1,8 @@ # SPDX-License-Identifier: GPL-2.0-only snd-ar-objs := audioreach.o q6apm.o topology.o +snd-apm-dai-objs := q6apm-dai.o
obj-$(CONFIG_SND_SOC_QCOM_AUDIOREACH) += snd-ar.o +obj-$(CONFIG_SND_SOC_QCOM_APM_DAI) += snd-apm-dai.o
diff --git a/sound/soc/qcom/audioreach/q6apm-dai.c b/sound/soc/qcom/audioreach/q6apm-dai.c new file mode 100644 index 000000000000..ae83cac80978 --- /dev/null +++ b/sound/soc/qcom/audioreach/q6apm-dai.c @@ -0,0 +1,494 @@ +// 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 <sound/pcm.h> +#include <linux/spinlock.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 SID_MASK_DEFAULT 0xF + +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_compr_params codec_param; + struct snd_dma_buffer dma_buffer; + spinlock_t lock; + phys_addr_t phys; + unsigned int pcm_size; + unsigned int pcm_count; + unsigned int pcm_irq_pos; /* IRQ 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; + enum stream_state state; + struct q6apm_graph *graph; +}; + +struct q6apm_dai_data { + long long int 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), + .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), + .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; + + switch (opcode) { + case APM_CLIENT_EVENT_CMD_EOS_DONE: + prtd->state = Q6APM_STREAM_STOPPED; + break; + case APM_CLIENT_EVENT_DATA_WRITE_DONE: { + prtd->pcm_irq_pos += prtd->pcm_count; + snd_pcm_period_elapsed(substream); + if (prtd->state == Q6APM_STREAM_RUNNING) { + q6apm_write_async(prtd->graph, + prtd->pcm_count, 0, 0, NO_TIMESTAMP); + } + + break; + } + case APM_CLIENT_EVENT_DATA_READ_DONE: + prtd->pcm_irq_pos += prtd->pcm_count; + snd_pcm_period_elapsed(substream); + if (prtd->state == Q6APM_STREAM_RUNNING) + q6apm_read(prtd->graph); + + 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 q6apm_dai_data *pdata; + int ret, i; + + pdata = snd_soc_component_get_drvdata(component); + if (!pdata) + return -EINVAL; + + if (!prtd || !prtd->graph) { + dev_err(component->dev, "%s: private data null or audio client freed\n", + __func__); + return -EINVAL; + } + + prtd->pcm_count = snd_pcm_lib_period_bytes(substream); + prtd->pcm_irq_pos = 0; + /* rate and channels are sent to audio driver */ + ret = q6apm_graph_media_format_shmem(prtd->graph, + substream->stream, + runtime->rate, + runtime->channels, + NULL, + prtd->bits_per_sample); + + if (ret < 0) { + dev_err(component->dev, "%s: q6apm_open_write failed\n", __func__); + return ret; + } + + ret = q6apm_graph_media_format_pcm(prtd->graph, + substream->stream, + runtime->rate, + runtime->channels, + NULL, + prtd->bits_per_sample); + if (ret < 0) + pr_info("%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(component->dev, "Audio Start: Buffer Allocation failed rc = %d\n", + ret); + return -ENOMEM; + } + + ret = q6apm_graph_prepare(prtd->graph); + ret = q6apm_graph_start(prtd->graph); + + if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) { + /* Queue the buffers */ + for (i = 0; i < runtime->periods; i++) + q6apm_read(prtd->graph); + + } + 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: + if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) + ret = q6apm_write_async(prtd->graph, prtd->pcm_count, 0, 0, NO_TIMESTAMP); + break; + case SNDRV_PCM_TRIGGER_STOP: + prtd->state = Q6APM_STREAM_STOPPED; + //ret = q6apm_cmd_nowait(prtd->graph, CMD_EOS); + break; + case SNDRV_PCM_TRIGGER_SUSPEND: + case SNDRV_PCM_TRIGGER_PAUSE_PUSH: + //ret = q6apm_cmd_nowait(prtd->graph, CMD_PAUSE); + 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 q6apm_dai_rtd *prtd; + struct q6apm_dai_data *pdata; + struct device *dev = component->dev; + int ret; + int graph_id; + + graph_id = cpu_dai->driver->id; + + pdata = snd_soc_component_get_drvdata(component); + if (!pdata) { + dev_err(component->dev, "Drv data not found ..\n"); + return -EINVAL; + } + + prtd = kzalloc(sizeof(struct q6apm_dai_rtd), GFP_KERNEL); + if (prtd == NULL) + return -ENOMEM; + + prtd->substream = substream; + + prtd->graph = q6apm_graph_open(dev, (q6apm_cb)event_handler, + prtd, graph_id); + if (IS_ERR(prtd->graph)) { + pr_info("%s: Could not allocate memory\n", __func__); + ret = PTR_ERR(prtd->graph); + kfree(prtd); + return ret; + } + + 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"); + + 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); + } + } + + 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); + } + 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); + } + + 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); + + snd_pcm_set_runtime_buffer(substream, &substream->dma_buffer); + + return 0; +} + +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 && prtd->graph) { + 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; + + if (prtd->pcm_irq_pos >= prtd->pcm_size) + prtd->pcm_irq_pos = 0; + + return bytes_to_frames(runtime, (prtd->pcm_irq_pos)); +} + +static int q6apm_dai_mmap(struct snd_soc_component *component, + struct snd_pcm_substream *substream, + struct vm_area_struct *vma) +{ + struct snd_pcm_runtime *runtime = substream->runtime; + struct device *dev = component->dev; + + return dma_mmap_coherent(dev, vma, + runtime->dma_area, runtime->dma_addr, + runtime->dma_bytes); +} + +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; + } + + return 0; +} + +static int q6apm_dai_pcm_new(struct snd_soc_component *component, + struct snd_soc_pcm_runtime *rtd) +{ + struct snd_pcm_substream *psubstream, *csubstream; + struct snd_pcm *pcm = rtd->pcm; + struct device *dev; + int size, ret; + + dev = component->dev; + size = BUFFER_BYTES_MAX; + psubstream = pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream; + if (psubstream) { + ret = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, dev, size, + &psubstream->dma_buffer); + if (ret) { + dev_err(dev, "Cannot allocate buffer(s)\n"); + return ret; + } + } + + csubstream = pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream; + if (csubstream) { + ret = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, dev, size, + &csubstream->dma_buffer); + if (ret) { + dev_err(dev, "Cannot allocate buffer(s)\n"); + if (psubstream) + snd_dma_free_pages(&psubstream->dma_buffer); + return ret; + } + } + + return 0; +} + +static void q6apm_dai_pcm_free(struct snd_soc_component *component, + struct snd_pcm *pcm) +{ + struct snd_pcm_substream *substream; + int i; + + if (!pcm->streams) + return; + + for (i = 0; i < ARRAY_SIZE(pcm->streams); i++) { + substream = pcm->streams[i].substream; + if (substream) { + snd_dma_free_pages(&substream->dma_buffer); + substream->dma_buffer.area = NULL; + substream->dma_buffer.addr = 0; + } + } +} + +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, + .pcm_destruct = q6apm_dai_pcm_free, + .mmap = q6apm_dai_mmap, + .hw_params = q6apm_dai_hw_params, + .pointer = q6apm_dai_pointer, + .trigger = q6apm_dai_trigger, +}; + +static int q6apm_dai_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct device_node *node = dev->of_node; + struct of_phandle_args args; + struct q6apm_dai_data *pdata; + 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); +} + +static const struct of_device_id q6apm_dai_device_id[] = { + { .compatible = "qcom,q6apm-dais" }, + {}, +}; +MODULE_DEVICE_TABLE(of, q6apm_dai_device_id); + +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 v2");