[alsa-devel] [RESEND PATCH v2 12/15] ASoC: qcom: qdsp6: Add support to q6asm dai driver
Rohit Kumar
rohitkr at codeaurora.org
Sat Jan 13 09:45:54 CET 2018
On 12/14/2017 11:03 PM, srinivas.kandagatla at linaro.org wrote:
> From: Srinivas Kandagatla <srinivas.kandagatla at linaro.org>
>
> This patch adds support to q6asm dai driver which configures Q6ASM streams
> to pass pcm data.
> Currently the driver only exposes 2 playback streams for hdmi playback
> support, it can be easily extended to add all 8 streams.
>
> Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla at linaro.org>
> ---
> sound/soc/qcom/Kconfig | 6 +
> sound/soc/qcom/qdsp6/Makefile | 1 +
> sound/soc/qcom/qdsp6/q6asm-dai.c | 534 +++++++++++++++++++++++++++++++++++++++
> 3 files changed, 541 insertions(+)
> create mode 100644 sound/soc/qcom/qdsp6/q6asm-dai.c
>
> diff --git a/sound/soc/qcom/Kconfig b/sound/soc/qcom/Kconfig
> index 003ce182691c..ecd1e4ba834d 100644
> --- a/sound/soc/qcom/Kconfig
[..]
> +static void event_handler(uint32_t opcode, uint32_t token,
> + uint32_t *payload, void *priv)
> +{
> + struct q6asm_dai_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;
Add support for V2 version of opcode to support latest adsp
> + 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:
> + break;
> + }
> +}
> +
> +static int q6asm_dai_prepare(struct snd_pcm_substream *substream)
> +{
> + struct snd_pcm_runtime *runtime = substream->runtime;
> + struct snd_soc_pcm_runtime *soc_prtd = substream->private_data;
> + struct q6asm_dai_rtd *prtd = runtime->private_data;
> + struct q6asm_dai_data *pdata;
> + int ret;
> +
> + pdata = dev_get_drvdata(soc_prtd->platform->dev);
> + if (!pdata)
> + 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);
> + q6routing_dereg_phy_stream(soc_prtd->dai_link->id,
> + SNDRV_PCM_STREAM_PLAYBACK);
> + }
> +
> + ret = q6asm_map_memory_regions(substream->stream, prtd->audio_client,
> + 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;
> + }
> +
> + 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 = q6asm_get_session_id(prtd->audio_client);
> + ret = q6routing_reg_phy_stream(soc_prtd->dai_link->id, LEGACY_PCM_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 q6asm_dai_trigger(struct snd_pcm_substream *substream, int cmd)
> +{
> + int ret = 0;
> + struct snd_pcm_runtime *runtime = substream->runtime;
> + struct q6asm_dai_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:
> + prtd->state = STOPPED;
> + 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 q6asm_dai_open(struct snd_pcm_substream *substream)
> +{
> + struct snd_pcm_runtime *runtime = substream->runtime;
> + struct snd_soc_pcm_runtime *soc_prtd = substream->private_data;
> + struct q6asm_dai_rtd *prtd;
> + struct q6asm_dai_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 q6asm_dai_rtd), GFP_KERNEL);
> + if (prtd == NULL)
> + return -ENOMEM;
> +
> + prtd->substream = substream;
> + prtd->audio_client = q6asm_audio_client_alloc(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 = q6asm_dai_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, &q6asm_dai_hardware_playback);
> +
> + runtime->dma_bytes = q6asm_dai_hardware_playback.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 q6asm_dai_close(struct snd_pcm_substream *substream)
> +{
> + struct snd_pcm_runtime *runtime = substream->runtime;
> + struct snd_soc_pcm_runtime *soc_prtd = substream->private_data;
> + struct q6asm_dai_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);
> + }
> + q6routing_dereg_phy_stream(soc_prtd->dai_link->id,
> + SNDRV_PCM_STREAM_PLAYBACK);
> + kfree(prtd);
> + return 0;
> +}
> +
> +static snd_pcm_uframes_t q6asm_dai_pointer(struct snd_pcm_substream *substream)
> +{
> +
> + struct snd_pcm_runtime *runtime = substream->runtime;
> + struct q6asm_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 q6asm_dai_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;
> + struct snd_card *card = soc_prtd->card->snd_card;
> +
> + return dma_mmap_coherent(card->dev, vma,
> + runtime->dma_area, runtime->dma_addr,
> + runtime->dma_bytes);
> +}
> +
> +static int q6asm_dai_hw_params(struct snd_pcm_substream *substream,
> + struct snd_pcm_hw_params *params)
> +{
> + struct snd_pcm_runtime *runtime = substream->runtime;
> + struct q6asm_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 struct snd_pcm_ops q6asm_dai_ops = {
> + .open = q6asm_dai_open,
> + .hw_params = q6asm_dai_hw_params,
> + .close = q6asm_dai_close,
> + .ioctl = snd_pcm_lib_ioctl,
> + .prepare = q6asm_dai_prepare,
> + .trigger = q6asm_dai_trigger,
> + .pointer = q6asm_dai_pointer,
> + .mmap = q6asm_dai_mmap,
> +};
> +
> +static int q6asm_dai_pcm_new(struct snd_soc_pcm_runtime *rtd)
> +{
> + struct snd_pcm *pcm = rtd->pcm;
> + struct snd_pcm_substream *substream;
> + struct snd_card *card = rtd->card->snd_card;
> + struct device *dev = card->dev;
> + struct device_node *node = dev->of_node;
> + struct q6asm_dai_data *pdata = dev_get_drvdata(rtd->platform->dev);
> + struct of_phandle_args args;
> +
> + int size, ret = 0;
> +
> + ret = of_parse_phandle_with_fixed_args(node, "iommus", 1, 0, &args);
> + if (ret < 0)
> + pdata->sid = -1;
> + else
> + pdata->sid = args.args[0];
> +
> +
> +
> + substream = pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream;
> + size = q6asm_dai_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 ret;
> +}
> +
> +static void q6asm_dai_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 q6asm_soc_platform = {
> + .ops = &q6asm_dai_ops,
> + .pcm_new = q6asm_dai_pcm_new,
> + .pcm_free = q6asm_dai_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 q6asm_fe_dai_component = {
> + .name = "q6asm-fe-dai",
> +};
> +
> +static struct snd_soc_dai_driver q6asm_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 q6asm_dai_probe(struct platform_device *pdev)
> +{
> + struct q6asm_dai_data *pdata;
> + struct device *dev = &pdev->dev;
> + int rc;
> +
> + pdata = devm_kzalloc(dev, sizeof(struct q6asm_dai_data), GFP_KERNEL);
> + if (!pdata)
> + return -ENOMEM;
> +
> +
> + dev_set_drvdata(dev, pdata);
> +
> + rc = snd_soc_register_platform(dev, &q6asm_soc_platform);
> + if (rc) {
> + dev_err(&pdev->dev, "err_dai_platform\n");
> + return rc;
> + }
> +
> + rc = snd_soc_register_component(dev, &q6asm_fe_dai_component,
> + q6asm_fe_dais,
> + ARRAY_SIZE(q6asm_fe_dais));
> + if (rc)
> + dev_err(dev, "err_dai_component\n");
> +
> + return rc;
> +
> +}
> +
> +static int q6asm_dai_remove(struct platform_device *pdev)
> +{
> + snd_soc_unregister_platform(&pdev->dev);
> + return 0;
> +}
> +
> +static struct platform_driver q6asm_dai_driver = {
> + .driver = {
> + .name = "q6asm_dai",
> + .owner = THIS_MODULE,
> + },
> + .probe = q6asm_dai_probe,
> + .remove = q6asm_dai_remove,
> +};
> +
> +module_platform_driver(q6asm_dai_driver);
> +
> +MODULE_DESCRIPTION("PCM module platform driver");
> +MODULE_LICENSE("GPL v2");
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