diff options
Diffstat (limited to 'sound/soc/sof/sof-client-probes.c')
| -rw-r--r-- | sound/soc/sof/sof-client-probes.c | 752 |
1 files changed, 752 insertions, 0 deletions
diff --git a/sound/soc/sof/sof-client-probes.c b/sound/soc/sof/sof-client-probes.c new file mode 100644 index 000000000..1e521a9e3 --- /dev/null +++ b/sound/soc/sof/sof-client-probes.c @@ -0,0 +1,752 @@ +// SPDX-License-Identifier: GPL-2.0-only +// +// Copyright(c) 2019-2022 Intel Corporation. All rights reserved. +// +// Author: Cezary Rojewski <cezary.rojewski@intel.com> +// +// SOF client support: +// Ranjani Sridharan <ranjani.sridharan@linux.intel.com> +// Peter Ujfalusi <peter.ujfalusi@linux.intel.com> +// + +#include <linux/debugfs.h> +#include <linux/module.h> +#include <linux/pm_runtime.h> +#include <linux/string_helpers.h> + +#include <sound/soc.h> +#include <sound/sof/header.h> +#include "sof-client.h" +#include "sof-client-probes.h" + +#define SOF_PROBES_SUSPEND_DELAY_MS 3000 +/* only extraction supported for now */ +#define SOF_PROBES_NUM_DAI_LINKS 1 + +#define SOF_PROBES_INVALID_NODE_ID UINT_MAX + +static bool __read_mostly sof_probes_enabled; +module_param_named(enable, sof_probes_enabled, bool, 0444); +MODULE_PARM_DESC(enable, "Enable SOF probes support"); + +struct sof_probes_priv { + struct dentry *dfs_points; + struct dentry *dfs_points_remove; + u32 extractor_stream_tag; + struct snd_soc_card card; + + const struct sof_probes_host_ops *host_ops; +}; + +struct sof_probe_point_desc { + unsigned int buffer_id; + unsigned int purpose; + unsigned int stream_tag; +} __packed; + +struct sof_probe_dma { + unsigned int stream_tag; + unsigned int dma_buffer_size; +} __packed; + +struct sof_ipc_probe_dma_add_params { + struct sof_ipc_cmd_hdr hdr; + unsigned int num_elems; + struct sof_probe_dma dma[]; +} __packed; + +struct sof_ipc_probe_info_params { + struct sof_ipc_reply rhdr; + unsigned int num_elems; + union { + struct sof_probe_dma dma[0]; + struct sof_probe_point_desc desc[0]; + }; +} __packed; + +struct sof_ipc_probe_point_add_params { + struct sof_ipc_cmd_hdr hdr; + unsigned int num_elems; + struct sof_probe_point_desc desc[]; +} __packed; + +struct sof_ipc_probe_point_remove_params { + struct sof_ipc_cmd_hdr hdr; + unsigned int num_elems; + unsigned int buffer_id[]; +} __packed; + +/** + * sof_probes_init - initialize data probing + * @cdev: SOF client device + * @stream_tag: Extractor stream tag + * @buffer_size: DMA buffer size to set for extractor + * + * Host chooses whether extraction is supported or not by providing + * valid stream tag to DSP. Once specified, stream described by that + * tag will be tied to DSP for extraction for the entire lifetime of + * probe. + * + * Probing is initialized only once and each INIT request must be + * matched by DEINIT call. + */ +static int sof_probes_init(struct sof_client_dev *cdev, u32 stream_tag, + size_t buffer_size) +{ + struct sof_ipc_probe_dma_add_params *msg; + size_t size = struct_size(msg, dma, 1); + struct sof_ipc_reply reply; + int ret; + + msg = kmalloc(size, GFP_KERNEL); + if (!msg) + return -ENOMEM; + msg->hdr.size = size; + msg->hdr.cmd = SOF_IPC_GLB_PROBE | SOF_IPC_PROBE_INIT; + msg->num_elems = 1; + msg->dma[0].stream_tag = stream_tag; + msg->dma[0].dma_buffer_size = buffer_size; + + ret = sof_client_ipc_tx_message(cdev, msg, &reply, sizeof(reply)); + kfree(msg); + return ret; +} + +/** + * sof_probes_deinit - cleanup after data probing + * @cdev: SOF client device + * + * Host sends DEINIT request to free previously initialized probe + * on DSP side once it is no longer needed. DEINIT only when there + * are no probes connected and with all injectors detached. + */ +static int sof_probes_deinit(struct sof_client_dev *cdev) +{ + struct sof_ipc_cmd_hdr msg; + struct sof_ipc_reply reply; + + msg.size = sizeof(msg); + msg.cmd = SOF_IPC_GLB_PROBE | SOF_IPC_PROBE_DEINIT; + + return sof_client_ipc_tx_message(cdev, &msg, &reply, sizeof(reply)); +} + +static int sof_probes_info(struct sof_client_dev *cdev, unsigned int cmd, + void **params, size_t *num_params) +{ + size_t max_msg_size = sof_client_get_ipc_max_payload_size(cdev); + struct sof_ipc_probe_info_params msg = {{{0}}}; + struct sof_ipc_probe_info_params *reply; + size_t bytes; + int ret; + + *params = NULL; + *num_params = 0; + + reply = kzalloc(max_msg_size, GFP_KERNEL); + if (!reply) + return -ENOMEM; + msg.rhdr.hdr.size = sizeof(msg); + msg.rhdr.hdr.cmd = SOF_IPC_GLB_PROBE | cmd; + + ret = sof_client_ipc_tx_message(cdev, &msg, reply, max_msg_size); + if (ret < 0 || reply->rhdr.error < 0) + goto exit; + + if (!reply->num_elems) + goto exit; + + if (cmd == SOF_IPC_PROBE_DMA_INFO) + bytes = sizeof(reply->dma[0]); + else + bytes = sizeof(reply->desc[0]); + bytes *= reply->num_elems; + *params = kmemdup(&reply->dma[0], bytes, GFP_KERNEL); + if (!*params) { + ret = -ENOMEM; + goto exit; + } + *num_params = reply->num_elems; + +exit: + kfree(reply); + return ret; +} + +/** + * sof_probes_points_info - retrieve list of active probe points + * @cdev: SOF client device + * @desc: Returned list of active probes + * @num_desc: Returned count of active probes + * + * Host sends PROBE_POINT_INFO request to obtain list of active probe + * points, valid for disconnection when given probe is no longer + * required. + */ +static int sof_probes_points_info(struct sof_client_dev *cdev, + struct sof_probe_point_desc **desc, + size_t *num_desc) +{ + return sof_probes_info(cdev, SOF_IPC_PROBE_POINT_INFO, + (void **)desc, num_desc); +} + +/** + * sof_probes_points_add - connect specified probes + * @cdev: SOF client device + * @desc: List of probe points to connect + * @num_desc: Number of elements in @desc + * + * Dynamically connects to provided set of endpoints. Immediately + * after connection is established, host must be prepared to + * transfer data from or to target stream given the probing purpose. + * + * Each probe point should be removed using PROBE_POINT_REMOVE + * request when no longer needed. + */ +static int sof_probes_points_add(struct sof_client_dev *cdev, + struct sof_probe_point_desc *desc, + size_t num_desc) +{ + struct sof_ipc_probe_point_add_params *msg; + size_t size = struct_size(msg, desc, num_desc); + struct sof_ipc_reply reply; + int ret; + + msg = kmalloc(size, GFP_KERNEL); + if (!msg) + return -ENOMEM; + msg->hdr.size = size; + msg->num_elems = num_desc; + msg->hdr.cmd = SOF_IPC_GLB_PROBE | SOF_IPC_PROBE_POINT_ADD; + memcpy(&msg->desc[0], desc, size - sizeof(*msg)); + + ret = sof_client_ipc_tx_message(cdev, msg, &reply, sizeof(reply)); + kfree(msg); + return ret; +} + +/** + * sof_probes_points_remove - disconnect specified probes + * @cdev: SOF client device + * @buffer_id: List of probe points to disconnect + * @num_buffer_id: Number of elements in @desc + * + * Removes previously connected probes from list of active probe + * points and frees all resources on DSP side. + */ +static int sof_probes_points_remove(struct sof_client_dev *cdev, + unsigned int *buffer_id, size_t num_buffer_id) +{ + struct sof_ipc_probe_point_remove_params *msg; + size_t size = struct_size(msg, buffer_id, num_buffer_id); + struct sof_ipc_reply reply; + int ret; + + msg = kmalloc(size, GFP_KERNEL); + if (!msg) + return -ENOMEM; + msg->hdr.size = size; + msg->num_elems = num_buffer_id; + msg->hdr.cmd = SOF_IPC_GLB_PROBE | SOF_IPC_PROBE_POINT_REMOVE; + memcpy(&msg->buffer_id[0], buffer_id, size - sizeof(*msg)); + + ret = sof_client_ipc_tx_message(cdev, msg, &reply, sizeof(reply)); + kfree(msg); + return ret; +} + +static int sof_probes_compr_startup(struct snd_compr_stream *cstream, + struct snd_soc_dai *dai) +{ + struct snd_soc_card *card = snd_soc_component_get_drvdata(dai->component); + struct sof_client_dev *cdev = snd_soc_card_get_drvdata(card); + struct sof_probes_priv *priv = cdev->data; + const struct sof_probes_host_ops *ops = priv->host_ops; + int ret; + + if (sof_client_get_fw_state(cdev) == SOF_FW_CRASHED) + return -ENODEV; + + ret = sof_client_core_module_get(cdev); + if (ret) + return ret; + + ret = ops->startup(cdev, cstream, dai, &priv->extractor_stream_tag); + if (ret) { + dev_err(dai->dev, "Failed to startup probe stream: %d\n", ret); + priv->extractor_stream_tag = SOF_PROBES_INVALID_NODE_ID; + sof_client_core_module_put(cdev); + } + + return ret; +} + +static int sof_probes_compr_shutdown(struct snd_compr_stream *cstream, + struct snd_soc_dai *dai) +{ + struct snd_soc_card *card = snd_soc_component_get_drvdata(dai->component); + struct sof_client_dev *cdev = snd_soc_card_get_drvdata(card); + struct sof_probes_priv *priv = cdev->data; + const struct sof_probes_host_ops *ops = priv->host_ops; + struct sof_probe_point_desc *desc; + size_t num_desc; + int i, ret; + + /* disconnect all probe points */ + ret = sof_probes_points_info(cdev, &desc, &num_desc); + if (ret < 0) { + dev_err(dai->dev, "Failed to get probe points: %d\n", ret); + goto exit; + } + + for (i = 0; i < num_desc; i++) + sof_probes_points_remove(cdev, &desc[i].buffer_id, 1); + kfree(desc); + +exit: + ret = sof_probes_deinit(cdev); + if (ret < 0) + dev_err(dai->dev, "Failed to deinit probe: %d\n", ret); + + priv->extractor_stream_tag = SOF_PROBES_INVALID_NODE_ID; + snd_compr_free_pages(cstream); + + ret = ops->shutdown(cdev, cstream, dai); + + sof_client_core_module_put(cdev); + + return ret; +} + +static int sof_probes_compr_set_params(struct snd_compr_stream *cstream, + struct snd_compr_params *params, + struct snd_soc_dai *dai) +{ + struct snd_soc_card *card = snd_soc_component_get_drvdata(dai->component); + struct sof_client_dev *cdev = snd_soc_card_get_drvdata(card); + struct snd_compr_runtime *rtd = cstream->runtime; + struct sof_probes_priv *priv = cdev->data; + const struct sof_probes_host_ops *ops = priv->host_ops; + int ret; + + cstream->dma_buffer.dev.type = SNDRV_DMA_TYPE_DEV_SG; + cstream->dma_buffer.dev.dev = sof_client_get_dma_dev(cdev); + ret = snd_compr_malloc_pages(cstream, rtd->buffer_size); + if (ret < 0) + return ret; + + ret = ops->set_params(cdev, cstream, params, dai); + if (ret) + return ret; + + ret = sof_probes_init(cdev, priv->extractor_stream_tag, rtd->dma_bytes); + if (ret < 0) { + dev_err(dai->dev, "Failed to init probe: %d\n", ret); + return ret; + } + + return 0; +} + +static int sof_probes_compr_trigger(struct snd_compr_stream *cstream, int cmd, + struct snd_soc_dai *dai) +{ + struct snd_soc_card *card = snd_soc_component_get_drvdata(dai->component); + struct sof_client_dev *cdev = snd_soc_card_get_drvdata(card); + struct sof_probes_priv *priv = cdev->data; + const struct sof_probes_host_ops *ops = priv->host_ops; + + return ops->trigger(cdev, cstream, cmd, dai); +} + +static int sof_probes_compr_pointer(struct snd_compr_stream *cstream, + struct snd_compr_tstamp *tstamp, + struct snd_soc_dai *dai) +{ + struct snd_soc_card *card = snd_soc_component_get_drvdata(dai->component); + struct sof_client_dev *cdev = snd_soc_card_get_drvdata(card); + struct sof_probes_priv *priv = cdev->data; + const struct sof_probes_host_ops *ops = priv->host_ops; + + return ops->pointer(cdev, cstream, tstamp, dai); +} + +static const struct snd_soc_cdai_ops sof_probes_compr_ops = { + .startup = sof_probes_compr_startup, + .shutdown = sof_probes_compr_shutdown, + .set_params = sof_probes_compr_set_params, + .trigger = sof_probes_compr_trigger, + .pointer = sof_probes_compr_pointer, +}; + +static int sof_probes_compr_copy(struct snd_soc_component *component, + struct snd_compr_stream *cstream, + char __user *buf, size_t count) +{ + struct snd_compr_runtime *rtd = cstream->runtime; + unsigned int offset, n; + void *ptr; + int ret; + + if (count > rtd->buffer_size) + count = rtd->buffer_size; + + div_u64_rem(rtd->total_bytes_transferred, rtd->buffer_size, &offset); + ptr = rtd->dma_area + offset; + n = rtd->buffer_size - offset; + + if (count < n) { + ret = copy_to_user(buf, ptr, count); + } else { + ret = copy_to_user(buf, ptr, n); + ret += copy_to_user(buf + n, rtd->dma_area, count - n); + } + + if (ret) + return count - ret; + return count; +} + +static const struct snd_compress_ops sof_probes_compressed_ops = { + .copy = sof_probes_compr_copy, +}; + +static ssize_t sof_probes_dfs_points_read(struct file *file, char __user *to, + size_t count, loff_t *ppos) +{ + struct sof_client_dev *cdev = file->private_data; + struct sof_probes_priv *priv = cdev->data; + struct device *dev = &cdev->auxdev.dev; + struct sof_probe_point_desc *desc; + int remaining, offset; + size_t num_desc; + char *buf; + int i, ret, err; + + if (priv->extractor_stream_tag == SOF_PROBES_INVALID_NODE_ID) { + dev_warn(dev, "no extractor stream running\n"); + return -ENOENT; + } + + buf = kzalloc(PAGE_SIZE, GFP_KERNEL); + if (!buf) + return -ENOMEM; + + ret = pm_runtime_resume_and_get(dev); + if (ret < 0 && ret != -EACCES) { + dev_err_ratelimited(dev, "debugfs read failed to resume %d\n", ret); + goto exit; + } + + ret = sof_probes_points_info(cdev, &desc, &num_desc); + if (ret < 0) + goto pm_error; + + for (i = 0; i < num_desc; i++) { + offset = strlen(buf); + remaining = PAGE_SIZE - offset; + ret = snprintf(buf + offset, remaining, + "Id: %#010x Purpose: %u Node id: %#x\n", + desc[i].buffer_id, desc[i].purpose, desc[i].stream_tag); + if (ret < 0 || ret >= remaining) { + /* truncate the output buffer at the last full line */ + buf[offset] = '\0'; + break; + } + } + + ret = simple_read_from_buffer(to, count, ppos, buf, strlen(buf)); + + kfree(desc); + +pm_error: + pm_runtime_mark_last_busy(dev); + err = pm_runtime_put_autosuspend(dev); + if (err < 0) + dev_err_ratelimited(dev, "debugfs read failed to idle %d\n", err); + +exit: + kfree(buf); + return ret; +} + +static ssize_t +sof_probes_dfs_points_write(struct file *file, const char __user *from, + size_t count, loff_t *ppos) +{ + struct sof_client_dev *cdev = file->private_data; + struct sof_probes_priv *priv = cdev->data; + struct device *dev = &cdev->auxdev.dev; + struct sof_probe_point_desc *desc; + u32 num_elems, *array; + size_t bytes; + int ret, err; + + if (priv->extractor_stream_tag == SOF_PROBES_INVALID_NODE_ID) { + dev_warn(dev, "no extractor stream running\n"); + return -ENOENT; + } + + ret = parse_int_array_user(from, count, (int **)&array); + if (ret < 0) + return ret; + + num_elems = *array; + bytes = sizeof(*array) * num_elems; + if (bytes % sizeof(*desc)) { + ret = -EINVAL; + goto exit; + } + + desc = (struct sof_probe_point_desc *)&array[1]; + + ret = pm_runtime_resume_and_get(dev); + if (ret < 0 && ret != -EACCES) { + dev_err_ratelimited(dev, "debugfs write failed to resume %d\n", ret); + goto exit; + } + + ret = sof_probes_points_add(cdev, desc, bytes / sizeof(*desc)); + if (!ret) + ret = count; + + pm_runtime_mark_last_busy(dev); + err = pm_runtime_put_autosuspend(dev); + if (err < 0) + dev_err_ratelimited(dev, "debugfs write failed to idle %d\n", err); +exit: + kfree(array); + return ret; +} + +static const struct file_operations sof_probes_points_fops = { + .open = simple_open, + .read = sof_probes_dfs_points_read, + .write = sof_probes_dfs_points_write, + .llseek = default_llseek, + + .owner = THIS_MODULE, +}; + +static ssize_t +sof_probes_dfs_points_remove_write(struct file *file, const char __user *from, + size_t count, loff_t *ppos) +{ + struct sof_client_dev *cdev = file->private_data; + struct sof_probes_priv *priv = cdev->data; + struct device *dev = &cdev->auxdev.dev; + int ret, err; + u32 *array; + + if (priv->extractor_stream_tag == SOF_PROBES_INVALID_NODE_ID) { + dev_warn(dev, "no extractor stream running\n"); + return -ENOENT; + } + + ret = parse_int_array_user(from, count, (int **)&array); + if (ret < 0) + return ret; + + ret = pm_runtime_resume_and_get(dev); + if (ret < 0) { + dev_err_ratelimited(dev, "debugfs write failed to resume %d\n", ret); + goto exit; + } + + ret = sof_probes_points_remove(cdev, &array[1], array[0]); + if (!ret) + ret = count; + + pm_runtime_mark_last_busy(dev); + err = pm_runtime_put_autosuspend(dev); + if (err < 0) + dev_err_ratelimited(dev, "debugfs write failed to idle %d\n", err); +exit: + kfree(array); + return ret; +} + +static const struct file_operations sof_probes_points_remove_fops = { + .open = simple_open, + .write = sof_probes_dfs_points_remove_write, + .llseek = default_llseek, + + .owner = THIS_MODULE, +}; + +static struct snd_soc_dai_driver sof_probes_dai_drv[] = { +{ + .name = "Probe Extraction CPU DAI", + .compress_new = snd_soc_new_compress, + .cops = &sof_probes_compr_ops, + .capture = { + .stream_name = "Probe Extraction", + .channels_min = 1, + .channels_max = 8, + .rates = SNDRV_PCM_RATE_48000, + .rate_min = 48000, + .rate_max = 48000, + }, +}, +}; + +static const struct snd_soc_component_driver sof_probes_component = { + .name = "sof-probes-component", + .compress_ops = &sof_probes_compressed_ops, + .module_get_upon_open = 1, + .legacy_dai_naming = 1, +}; + +SND_SOC_DAILINK_DEF(dummy, DAILINK_COMP_ARRAY(COMP_DUMMY())); + +static int sof_probes_client_probe(struct auxiliary_device *auxdev, + const struct auxiliary_device_id *id) +{ + struct sof_client_dev *cdev = auxiliary_dev_to_sof_client_dev(auxdev); + struct dentry *dfsroot = sof_client_get_debugfs_root(cdev); + struct device *dev = &auxdev->dev; + struct snd_soc_dai_link_component platform_component[] = { + { + .name = dev_name(dev), + } + }; + struct snd_soc_card *card; + struct sof_probes_priv *priv; + struct snd_soc_dai_link_component *cpus; + struct sof_probes_host_ops *ops; + struct snd_soc_dai_link *links; + int ret; + + /* do not set up the probes support if it is not enabled */ + if (!sof_probes_enabled) + return -ENXIO; + + /* only ipc3 is supported */ + if (sof_client_get_ipc_type(cdev) != SOF_IPC) + return -ENXIO; + + if (!dev->platform_data) { + dev_err(dev, "missing platform data\n"); + return -ENODEV; + } + + priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + ops = dev->platform_data; + + if (!ops->startup || !ops->shutdown || !ops->set_params || !ops->trigger || + !ops->pointer) { + dev_err(dev, "missing platform callback(s)\n"); + return -ENODEV; + } + + priv->host_ops = ops; + cdev->data = priv; + + /* register probes component driver and dai */ + ret = devm_snd_soc_register_component(dev, &sof_probes_component, + sof_probes_dai_drv, + ARRAY_SIZE(sof_probes_dai_drv)); + if (ret < 0) { + dev_err(dev, "failed to register SOF probes DAI driver %d\n", ret); + return ret; + } + + /* set client data */ + priv->extractor_stream_tag = SOF_PROBES_INVALID_NODE_ID; + + /* create read-write probes_points debugfs entry */ + priv->dfs_points = debugfs_create_file("probe_points", 0644, dfsroot, + cdev, &sof_probes_points_fops); + + /* create read-write probe_points_remove debugfs entry */ + priv->dfs_points_remove = debugfs_create_file("probe_points_remove", 0644, + dfsroot, cdev, + &sof_probes_points_remove_fops); + + links = devm_kcalloc(dev, SOF_PROBES_NUM_DAI_LINKS, sizeof(*links), GFP_KERNEL); + cpus = devm_kcalloc(dev, SOF_PROBES_NUM_DAI_LINKS, sizeof(*cpus), GFP_KERNEL); + if (!links || !cpus) { + debugfs_remove(priv->dfs_points); + debugfs_remove(priv->dfs_points_remove); + return -ENOMEM; + } + + /* extraction DAI link */ + links[0].name = "Compress Probe Capture"; + links[0].id = 0; + links[0].cpus = &cpus[0]; + links[0].num_cpus = 1; + links[0].cpus->dai_name = "Probe Extraction CPU DAI"; + links[0].codecs = dummy; + links[0].num_codecs = 1; + links[0].platforms = platform_component; + links[0].num_platforms = ARRAY_SIZE(platform_component); + links[0].nonatomic = 1; + + card = &priv->card; + + card->dev = dev; + card->name = "sof-probes"; + card->owner = THIS_MODULE; + card->num_links = SOF_PROBES_NUM_DAI_LINKS; + card->dai_link = links; + + /* set idle_bias_off to prevent the core from resuming the card->dev */ + card->dapm.idle_bias_off = true; + + snd_soc_card_set_drvdata(card, cdev); + + ret = devm_snd_soc_register_card(dev, card); + if (ret < 0) { + debugfs_remove(priv->dfs_points); + debugfs_remove(priv->dfs_points_remove); + dev_err(dev, "Probes card register failed %d\n", ret); + return ret; + } + + /* enable runtime PM */ + pm_runtime_set_autosuspend_delay(dev, SOF_PROBES_SUSPEND_DELAY_MS); + pm_runtime_use_autosuspend(dev); + pm_runtime_enable(dev); + pm_runtime_mark_last_busy(dev); + pm_runtime_idle(dev); + + return 0; +} + +static void sof_probes_client_remove(struct auxiliary_device *auxdev) +{ + struct sof_client_dev *cdev = auxiliary_dev_to_sof_client_dev(auxdev); + struct sof_probes_priv *priv = cdev->data; + + if (!sof_probes_enabled) + return; + + pm_runtime_disable(&auxdev->dev); + debugfs_remove(priv->dfs_points); + debugfs_remove(priv->dfs_points_remove); +} + +static const struct auxiliary_device_id sof_probes_client_id_table[] = { + { .name = "snd_sof.hda-probes", }, + {}, +}; +MODULE_DEVICE_TABLE(auxiliary, sof_probes_client_id_table); + +/* driver name will be set based on KBUILD_MODNAME */ +static struct auxiliary_driver sof_probes_client_drv = { + .probe = sof_probes_client_probe, + .remove = sof_probes_client_remove, + + .id_table = sof_probes_client_id_table, +}; + +module_auxiliary_driver(sof_probes_client_drv); + +MODULE_DESCRIPTION("SOF Probes Client Driver"); +MODULE_LICENSE("GPL v2"); +MODULE_IMPORT_NS(SND_SOC_SOF_CLIENT); |