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Message-Id: <20210607152836.17154-9-srinivas.kandagatla@linaro.org>
Date: Mon, 7 Jun 2021 16:28:31 +0100
From: Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
To: bjorn.andersson@...aro.org, broonie@...nel.org
Cc: plai@...eaurora.org, tiwai@...e.de, robh@...nel.org,
devicetree@...r.kernel.org, perex@...ex.cz,
alsa-devel@...a-project.org, linux-kernel@...r.kernel.org,
lgirdwood@...il.com, bgoswami@...eaurora.org,
Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
Subject: [RFC PATCH 08/13] ASoC: qcom: audioreach: add q6apm-dai support
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@...aro.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");
--
2.21.0
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