new file mode 100644
@@ -0,0 +1,21 @@
+Qualcomm Q6ADM (Q6 Audio Device Manager) binding
+
+This bindings describe the Qualcomm Q6 ADM module on QDSP,
+which is used by audio drivers.
+
+- compatible:
+
+ Usage: required
+ Value type: <stringlist>
+ Definition: must be "qcom,q6pcm-v2"
+
+#sound-dai-cells:
+ Usage: required
+ Value type: <integer>
+ Definition: Must be equal to 1
+
+= EXAMPLE
+ pcm: pcm0 {
+ compatible = "qcom,q6pcm-v2";
+ #sound-dai-cells = <1>;
+ };
@@ -64,6 +64,11 @@ config SND_SOC_QDSP6V2_HDMI
tristate
default n
+config SND_SOC_QDSP6V2_PCM
+ tristate
+ default n
+
+
config SND_SOC_QDSP6V2
tristate "SoC ALSA audio driver for QDSP6V2"
select SND_SOC_QDSP6V2_AFE
@@ -71,6 +76,7 @@ config SND_SOC_QDSP6V2
select SND_SOC_QDSP6V2_ASM
select SND_SOC_QDSP6V2_ROUTING
select SND_SOC_QDSP6V2_HDMI
+ select SND_SOC_QDSP6V2_PCM
help
To add support for MSM QDSP6V2 Soc Audio.
This will enable sound soc platform specific
@@ -3,3 +3,4 @@ obj-$(CONFIG_SND_SOC_QDSP6V2_ADM) += q6adm.o
obj-$(CONFIG_SND_SOC_QDSP6V2_ASM) += q6asm.o
obj-$(CONFIG_SND_SOC_QDSP6V2_ROUTING) += q6routing.o
obj-$(CONFIG_SND_SOC_QDSP6V2_HDMI) += q6hdmi.o
+obj-$(CONFIG_SND_SOC_QDSP6V2_PCM) += q6pcm.o
new file mode 100644
@@ -0,0 +1,558 @@
+/* Copyright (c) 2012-2017, The Linux Foundation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#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 <asm/dma.h>
+#include <linux/dma-mapping.h>
+#include <dt-bindings/sound/qcom,asm.h>
+#include <linux/of_device.h>
+#include <sound/pcm_params.h>
+#include "q6asm-v2.h"
+#include "q6routing-v2.h"
+#include "common.h"
+
+#define PLAYBACK_MIN_NUM_PERIODS 2
+#define PLAYBACK_MAX_NUM_PERIODS 8
+#define PLAYBACK_MAX_PERIOD_SIZE 61440
+#define PLAYBACK_MIN_PERIOD_SIZE 128
+
+enum stream_state {
+ IDLE = 0,
+ STOPPED,
+ RUNNING,
+};
+
+struct q6pcm_rtd {
+ struct snd_pcm_substream *substream;
+ void *data;
+ dma_addr_t phys;
+ unsigned int pcm_size;
+ unsigned int pcm_count;
+ unsigned int pcm_irq_pos; /* IRQ position */
+ unsigned int periods;
+ uint16_t bits_per_sample;
+ uint16_t source; /* Encoding source bit mask */
+
+ struct audio_client *audio_client;
+ uint16_t session_id;
+
+ enum stream_state state;
+ bool set_channel_map;
+ char channel_map[8];
+};
+
+struct q6pcm_data {
+ struct q6asm *q6asm;
+ u64 sid;
+};
+
+static struct snd_pcm_hardware q6pcm_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 = 1,
+ .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,
+};
+
+/* Conventional and unconventional sample rate supported */
+static unsigned int supported_sample_rates[] = {
+ 8000, 11025, 12000, 16000, 22050, 24000, 32000, 44100, 48000,
+ 88200, 96000, 176400, 192000
+};
+
+static struct snd_pcm_hw_constraint_list constraints_sample_rates = {
+ .count = ARRAY_SIZE(supported_sample_rates),
+ .list = supported_sample_rates,
+ .mask = 0,
+};
+
+static void event_handler(uint32_t opcode, uint32_t token,
+ uint32_t *payload, void *priv)
+{
+ struct q6pcm_rtd *prtd = priv;
+ struct snd_pcm_substream *substream = prtd->substream;
+
+ switch (opcode) {
+ case ASM_CLIENT_EVENT_CMD_RUN_DONE:
+ q6asm_write_nolock(prtd->audio_client,
+ prtd->pcm_count, 0, 0, NO_TIMESTAMP);
+ break;
+ case ASM_CLIENT_EVENT_CMD_EOS_DONE:
+ prtd->state = STOPPED;
+ break;
+ case ASM_CLIENT_EVENT_DATA_WRITE_DONE: {
+ prtd->pcm_irq_pos += prtd->pcm_count;
+ snd_pcm_period_elapsed(substream);
+ if (prtd->state == RUNNING)
+ q6asm_write_nolock(prtd->audio_client,
+ prtd->pcm_count, 0, 0, NO_TIMESTAMP);
+
+ break;
+ }
+ default:
+ pr_err("Not Supported Event opcode[0x%x]\n", opcode);
+ break;
+ }
+}
+
+static int q6pcm_prepare(struct snd_pcm_substream *substream)
+{
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ struct snd_soc_pcm_runtime *soc_prtd = substream->private_data;
+ struct q6pcm_rtd *prtd = runtime->private_data;
+ struct q6pcm_data *pdata;
+ int ret;
+
+ pdata = dev_get_drvdata(soc_prtd->platform->dev);
+ if (!pdata) {
+ pr_err("%s: platform data not populated\n", __func__);
+ return -EINVAL;
+ }
+ if (!prtd || !prtd->audio_client) {
+ pr_err("%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 */
+ if (prtd->state) {
+ /* clear the previous setup if any */
+ q6asm_cmd(prtd->audio_client, CMD_CLOSE);
+ q6asm_unmap_memory_regions(substream->stream,
+ prtd->audio_client);
+ routing_dereg_phy_stream(soc_prtd->dai_link->id,
+ SNDRV_PCM_STREAM_PLAYBACK);
+ }
+
+ ret = q6asm_map_memory_regions(substream->stream, prtd->audio_client,
+ prtd->data, prtd->phys,
+ (prtd->pcm_size / prtd->periods),
+ prtd->periods);
+
+ if (ret < 0) {
+ pr_err("Audio Start: Buffer Allocation failed rc = %d\n",
+ ret);
+ return -ENOMEM;
+ }
+
+ prtd->audio_client->perf_mode = LEGACY_PCM_MODE;
+
+ ret = q6asm_open_write(prtd->audio_client, FORMAT_LINEAR_PCM,
+ prtd->bits_per_sample);
+ if (ret < 0) {
+ pr_err("%s: q6asm_open_write failed\n", __func__);
+ q6asm_audio_client_free(prtd->audio_client);
+ prtd->audio_client = NULL;
+ return -ENOMEM;
+ }
+
+ prtd->session_id = prtd->audio_client->session;
+ ret = routing_reg_phy_stream(soc_prtd->dai_link->id,
+ prtd->audio_client->perf_mode,
+ prtd->session_id, substream->stream);
+ if (ret) {
+ pr_err("%s: stream reg failed ret:%d\n", __func__, ret);
+ return ret;
+ }
+
+ ret = q6asm_media_format_block_multi_ch_pcm(
+ prtd->audio_client, runtime->rate,
+ runtime->channels, !prtd->set_channel_map,
+ prtd->channel_map, prtd->bits_per_sample);
+ if (ret < 0)
+ pr_info("%s: CMD Format block failed\n", __func__);
+
+ prtd->state = RUNNING;
+
+ return 0;
+}
+
+static int q6pcm_trigger(struct snd_pcm_substream *substream, int cmd)
+{
+ int ret = 0;
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ struct q6pcm_rtd *prtd = runtime->private_data;
+
+ switch (cmd) {
+ case SNDRV_PCM_TRIGGER_START:
+ ret = q6asm_run_nowait(prtd->audio_client, 0, 0, 0);
+ break;
+ case SNDRV_PCM_TRIGGER_RESUME:
+ case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
+ ret = q6asm_run_nowait(prtd->audio_client, 0, 0, 0);
+ break;
+ case SNDRV_PCM_TRIGGER_STOP:
+ ret = q6asm_cmd_nowait(prtd->audio_client, CMD_EOS);
+ break;
+ case SNDRV_PCM_TRIGGER_SUSPEND:
+ case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
+ ret = q6asm_cmd_nowait(prtd->audio_client, CMD_PAUSE);
+ break;
+ default:
+ ret = -EINVAL;
+ break;
+ }
+
+ return ret;
+}
+
+static int q6pcm_open(struct snd_pcm_substream *substream)
+{
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ struct snd_soc_pcm_runtime *soc_prtd = substream->private_data;
+ struct q6pcm_rtd *prtd;
+ struct q6pcm_data *pdata;
+ struct device *dev = soc_prtd->platform->dev;
+ int ret = 0;
+
+ pdata = dev_get_drvdata(dev);
+ if (!pdata) {
+ pr_err("Platform data not found ..\n");
+ return -EINVAL;
+ }
+
+ prtd = kzalloc(sizeof(struct q6pcm_rtd), GFP_KERNEL);
+ if (prtd == NULL)
+ return -ENOMEM;
+
+ prtd->substream = substream;
+ prtd->audio_client = q6asm_audio_client_alloc(pdata->q6asm, dev,
+ (app_cb)event_handler, prtd);
+ if (!prtd->audio_client) {
+ pr_info("%s: Could not allocate memory\n", __func__);
+ kfree(prtd);
+ return -ENOMEM;
+ }
+
+ prtd->audio_client->dev = dev;
+
+ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+ runtime->hw = q6pcm_hardware_playback;
+
+ ret = snd_pcm_hw_constraint_list(runtime, 0,
+ SNDRV_PCM_HW_PARAM_RATE,
+ &constraints_sample_rates);
+ if (ret < 0)
+ pr_info("snd_pcm_hw_constraint_list failed\n");
+ /* 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)
+ pr_info("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,
+ PLAYBACK_MIN_NUM_PERIODS * PLAYBACK_MIN_PERIOD_SIZE,
+ PLAYBACK_MAX_NUM_PERIODS * PLAYBACK_MAX_PERIOD_SIZE);
+ if (ret < 0) {
+ pr_err("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) {
+ pr_err("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) {
+ pr_err("constraint for buffer bytes step ret = %d\n",
+ ret);
+ }
+
+ prtd->set_channel_map = false;
+ runtime->private_data = prtd;
+
+ snd_soc_set_runtime_hwparams(substream, &q6pcm_hardware_playback);
+
+ runtime->dma_bytes = q6pcm_hardware_playback.buffer_bytes_max;
+
+
+ prtd->data = substream->dma_buffer.area;
+
+ 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 q6pcm_close(struct snd_pcm_substream *substream)
+{
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ struct snd_soc_pcm_runtime *soc_prtd = substream->private_data;
+ struct q6pcm_rtd *prtd = runtime->private_data;
+
+ if (prtd->audio_client) {
+ q6asm_cmd(prtd->audio_client, CMD_CLOSE);
+ q6asm_unmap_memory_regions(substream->stream,
+ prtd->audio_client);
+ q6asm_audio_client_free(prtd->audio_client);
+ }
+ routing_dereg_phy_stream(soc_prtd->dai_link->id,
+ SNDRV_PCM_STREAM_PLAYBACK);
+ kfree(prtd);
+ return 0;
+}
+
+static snd_pcm_uframes_t q6pcm_pointer(struct snd_pcm_substream *substream)
+{
+
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ struct q6pcm_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 q6pcm_mmap(struct snd_pcm_substream *substream,
+ struct vm_area_struct *vma)
+{
+
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ struct snd_soc_pcm_runtime *soc_prtd = substream->private_data;
+
+ return dma_mmap_coherent(soc_prtd->platform->dev, vma,
+ runtime->dma_area, runtime->dma_addr,
+ runtime->dma_bytes);
+}
+
+static int q6pcm_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params)
+{
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ struct q6pcm_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 struct snd_pcm_ops q6pcm_ops = {
+ .open = q6pcm_open,
+ .hw_params = q6pcm_hw_params,
+ .close = q6pcm_close,
+ .ioctl = snd_pcm_lib_ioctl,
+ .prepare = q6pcm_prepare,
+ .trigger = q6pcm_trigger,
+ .pointer = q6pcm_pointer,
+ .mmap = q6pcm_mmap,
+};
+static int msm_asoc_pcm_new(struct snd_soc_pcm_runtime *rtd)
+{
+ struct device *dev = rtd->platform->dev;
+ struct snd_pcm *pcm = rtd->pcm;
+ struct snd_pcm_substream *substream;
+ int size, ret = 0;
+
+ substream = pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream;
+ size = q6pcm_hardware_playback.buffer_bytes_max;
+ ret = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, dev, size,
+ &substream->dma_buffer);
+ if (ret) {
+ dev_err(dev, "Cannot allocate buffer(s)\n");
+ return ret;
+ }
+
+ return 0;
+}
+
+static void msm_asoc_pcm_free(struct snd_pcm *pcm)
+{
+ struct snd_pcm_substream *substream;
+ int i;
+
+ 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 struct snd_soc_platform_driver msm_soc_platform = {
+ .ops = &q6pcm_ops,
+ .pcm_new = msm_asoc_pcm_new,
+ .pcm_free = msm_asoc_pcm_free,
+
+};
+
+static const struct snd_soc_dapm_route afe_pcm_routes[] = {
+ {"MM_DL1", NULL, "MultiMedia1 Playback" },
+ {"MM_DL2", NULL, "MultiMedia2 Playback" },
+
+};
+
+static int fe_dai_probe(struct snd_soc_dai *dai)
+{
+ struct snd_soc_dapm_context *dapm;
+
+ dapm = snd_soc_component_get_dapm(dai->component);
+ snd_soc_dapm_add_routes(dapm, afe_pcm_routes,
+ ARRAY_SIZE(afe_pcm_routes));
+
+ return 0;
+}
+
+static const struct snd_soc_component_driver msm_fe_dai_component = {
+ .name = "msm-dai-fe",
+};
+
+static struct snd_soc_dai_driver msm_fe_dais[] = {
+ {
+ .playback = {
+ .stream_name = "MultiMedia1 Playback",
+ .rates = (SNDRV_PCM_RATE_8000_192000|
+ SNDRV_PCM_RATE_KNOT),
+ .formats = (SNDRV_PCM_FMTBIT_S16_LE |
+ SNDRV_PCM_FMTBIT_S24_LE),
+ .channels_min = 1,
+ .channels_max = 8,
+ .rate_min = 8000,
+ .rate_max = 192000,
+ },
+ .name = "MM_DL1",
+ .probe = fe_dai_probe,
+ .id = MSM_FRONTEND_DAI_MULTIMEDIA1,
+ },
+ {
+ .playback = {
+ .stream_name = "MultiMedia2 Playback",
+ .rates = (SNDRV_PCM_RATE_8000_192000|
+ SNDRV_PCM_RATE_KNOT),
+ .formats = (SNDRV_PCM_FMTBIT_S16_LE |
+ SNDRV_PCM_FMTBIT_S24_LE),
+ .channels_min = 1,
+ .channels_max = 8,
+ .rate_min = 8000,
+ .rate_max = 192000,
+ },
+ .name = "MM_DL2",
+ .probe = fe_dai_probe,
+ .id = MSM_FRONTEND_DAI_MULTIMEDIA2,
+ },
+};
+
+static int q6pcm_probe(struct platform_device *pdev)
+{
+ struct q6pcm_data *pdata;
+ struct device *dev = &pdev->dev;
+ struct device_node *node = dev->of_node;
+ struct of_phandle_args args;
+ int rc;
+
+ pdata = devm_kzalloc(dev, sizeof(struct q6pcm_data), GFP_KERNEL);
+ if (!pdata)
+ return -ENOMEM;
+
+ pdata->q6asm = q6asm_get(dev);
+ if (IS_ERR(pdata->q6asm))
+ return -EPROBE_DEFER;
+
+
+ rc = of_parse_phandle_with_fixed_args(node, "iommus", 1, 0, &args);
+ if (rc < 0)
+ pdata->sid = -1;
+ else
+ pdata->sid = args.args[0];
+
+ /* only 32bit addressable */
+ dma_set_mask(dev, DMA_BIT_MASK(32));
+ dma_set_coherent_mask(dev, DMA_BIT_MASK(32));
+ dev_set_drvdata(dev, pdata);
+
+ rc = snd_soc_register_platform(dev, &msm_soc_platform);
+ if (rc) {
+ dev_err(&pdev->dev, "err_dai_platform\n");
+ return rc;
+ }
+
+ rc = snd_soc_register_component(dev, &msm_fe_dai_component,
+ msm_fe_dais, ARRAY_SIZE(msm_fe_dais));
+ if (rc)
+ dev_err(dev, "err_dai_component\n");
+
+ return rc;
+
+}
+
+static int q6pcm_remove(struct platform_device *pdev)
+{
+ snd_soc_unregister_platform(&pdev->dev);
+
+ return 0;
+}
+
+static const struct of_device_id q6pcm_dt_match[] = {
+ {.compatible = "qcom,q6pcm-v2"},
+ {}
+};
+MODULE_DEVICE_TABLE(of, q6pcm_dt_match);
+
+static struct platform_driver q6pcm_driver = {
+ .driver = {
+ .name = "msm-pcm-dsp",
+ .owner = THIS_MODULE,
+ .of_match_table = q6pcm_dt_match,
+ },
+ .probe = q6pcm_probe,
+ .remove = q6pcm_remove,
+};
+
+module_platform_driver(q6pcm_driver);
+
+MODULE_DESCRIPTION("PCM module platform driver");
+MODULE_LICENSE("GPL v2");