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![Peter Ujfalusi](/assets/img/avatar_default.png)
Instead of using the SOF_IPC_MSG_MAX_SIZE as the maximum payload size for and IPC message, use the provided API to query it. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com> Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com> Reviewed-by: Bard Liao <yung-chuan.liao@linux.intel.com> Link: https://lore.kernel.org/r/20220506132647.18690-4-peter.ujfalusi@linux.intel.com Signed-off-by: Mark Brown <broonie@kernel.org>
819 lines
21 KiB
C
819 lines
21 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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//
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// Copyright(c) 2019-2022 Intel Corporation. All rights reserved.
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//
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// Author: Cezary Rojewski <cezary.rojewski@intel.com>
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//
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// SOF client support:
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// Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
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// Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
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//
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#include <linux/debugfs.h>
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#include <linux/module.h>
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#include <linux/pm_runtime.h>
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#include <sound/soc.h>
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#include <sound/sof/header.h>
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#include "sof-client.h"
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#include "sof-client-probes.h"
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#define SOF_PROBES_SUSPEND_DELAY_MS 3000
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/* only extraction supported for now */
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#define SOF_PROBES_NUM_DAI_LINKS 1
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#define SOF_PROBES_INVALID_NODE_ID UINT_MAX
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static bool __read_mostly sof_probes_enabled;
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module_param_named(enable, sof_probes_enabled, bool, 0444);
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MODULE_PARM_DESC(enable, "Enable SOF probes support");
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struct sof_probes_priv {
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struct dentry *dfs_points;
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struct dentry *dfs_points_remove;
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u32 extractor_stream_tag;
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struct snd_soc_card card;
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const struct sof_probes_host_ops *host_ops;
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};
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struct sof_probe_point_desc {
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unsigned int buffer_id;
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unsigned int purpose;
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unsigned int stream_tag;
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} __packed;
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struct sof_probe_dma {
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unsigned int stream_tag;
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unsigned int dma_buffer_size;
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} __packed;
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struct sof_ipc_probe_dma_add_params {
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struct sof_ipc_cmd_hdr hdr;
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unsigned int num_elems;
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struct sof_probe_dma dma[];
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} __packed;
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struct sof_ipc_probe_info_params {
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struct sof_ipc_reply rhdr;
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unsigned int num_elems;
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union {
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struct sof_probe_dma dma[0];
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struct sof_probe_point_desc desc[0];
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};
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} __packed;
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struct sof_ipc_probe_point_add_params {
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struct sof_ipc_cmd_hdr hdr;
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unsigned int num_elems;
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struct sof_probe_point_desc desc[];
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} __packed;
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struct sof_ipc_probe_point_remove_params {
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struct sof_ipc_cmd_hdr hdr;
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unsigned int num_elems;
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unsigned int buffer_id[];
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} __packed;
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/**
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* sof_probes_init - initialize data probing
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* @cdev: SOF client device
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* @stream_tag: Extractor stream tag
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* @buffer_size: DMA buffer size to set for extractor
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*
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* Host chooses whether extraction is supported or not by providing
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* valid stream tag to DSP. Once specified, stream described by that
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* tag will be tied to DSP for extraction for the entire lifetime of
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* probe.
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*
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* Probing is initialized only once and each INIT request must be
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* matched by DEINIT call.
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*/
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static int sof_probes_init(struct sof_client_dev *cdev, u32 stream_tag,
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size_t buffer_size)
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{
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struct sof_ipc_probe_dma_add_params *msg;
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size_t size = struct_size(msg, dma, 1);
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struct sof_ipc_reply reply;
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int ret;
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msg = kmalloc(size, GFP_KERNEL);
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if (!msg)
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return -ENOMEM;
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msg->hdr.size = size;
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msg->hdr.cmd = SOF_IPC_GLB_PROBE | SOF_IPC_PROBE_INIT;
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msg->num_elems = 1;
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msg->dma[0].stream_tag = stream_tag;
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msg->dma[0].dma_buffer_size = buffer_size;
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ret = sof_client_ipc_tx_message(cdev, msg, &reply, sizeof(reply));
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kfree(msg);
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return ret;
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}
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/**
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* sof_probes_deinit - cleanup after data probing
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* @cdev: SOF client device
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*
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* Host sends DEINIT request to free previously initialized probe
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* on DSP side once it is no longer needed. DEINIT only when there
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* are no probes connected and with all injectors detached.
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*/
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static int sof_probes_deinit(struct sof_client_dev *cdev)
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{
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struct sof_ipc_cmd_hdr msg;
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struct sof_ipc_reply reply;
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msg.size = sizeof(msg);
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msg.cmd = SOF_IPC_GLB_PROBE | SOF_IPC_PROBE_DEINIT;
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return sof_client_ipc_tx_message(cdev, &msg, &reply, sizeof(reply));
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}
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static int sof_probes_info(struct sof_client_dev *cdev, unsigned int cmd,
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void **params, size_t *num_params)
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{
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size_t max_msg_size = sof_client_get_ipc_max_payload_size(cdev);
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struct sof_ipc_probe_info_params msg = {{{0}}};
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struct sof_ipc_probe_info_params *reply;
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size_t bytes;
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int ret;
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*params = NULL;
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*num_params = 0;
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reply = kzalloc(max_msg_size, GFP_KERNEL);
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if (!reply)
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return -ENOMEM;
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msg.rhdr.hdr.size = sizeof(msg);
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msg.rhdr.hdr.cmd = SOF_IPC_GLB_PROBE | cmd;
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ret = sof_client_ipc_tx_message(cdev, &msg, reply, max_msg_size);
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if (ret < 0 || reply->rhdr.error < 0)
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goto exit;
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if (!reply->num_elems)
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goto exit;
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if (cmd == SOF_IPC_PROBE_DMA_INFO)
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bytes = sizeof(reply->dma[0]);
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else
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bytes = sizeof(reply->desc[0]);
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bytes *= reply->num_elems;
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*params = kmemdup(&reply->dma[0], bytes, GFP_KERNEL);
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if (!*params) {
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ret = -ENOMEM;
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goto exit;
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}
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*num_params = reply->num_elems;
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exit:
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kfree(reply);
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return ret;
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}
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/**
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* sof_probes_points_info - retrieve list of active probe points
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* @cdev: SOF client device
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* @desc: Returned list of active probes
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* @num_desc: Returned count of active probes
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*
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* Host sends PROBE_POINT_INFO request to obtain list of active probe
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* points, valid for disconnection when given probe is no longer
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* required.
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*/
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static int sof_probes_points_info(struct sof_client_dev *cdev,
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struct sof_probe_point_desc **desc,
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size_t *num_desc)
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{
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return sof_probes_info(cdev, SOF_IPC_PROBE_POINT_INFO,
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(void **)desc, num_desc);
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}
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/**
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* sof_probes_points_add - connect specified probes
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* @cdev: SOF client device
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* @desc: List of probe points to connect
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* @num_desc: Number of elements in @desc
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*
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* Dynamically connects to provided set of endpoints. Immediately
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* after connection is established, host must be prepared to
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* transfer data from or to target stream given the probing purpose.
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*
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* Each probe point should be removed using PROBE_POINT_REMOVE
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* request when no longer needed.
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*/
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static int sof_probes_points_add(struct sof_client_dev *cdev,
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struct sof_probe_point_desc *desc,
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size_t num_desc)
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{
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struct sof_ipc_probe_point_add_params *msg;
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size_t size = struct_size(msg, desc, num_desc);
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struct sof_ipc_reply reply;
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int ret;
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msg = kmalloc(size, GFP_KERNEL);
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if (!msg)
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return -ENOMEM;
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msg->hdr.size = size;
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msg->num_elems = num_desc;
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msg->hdr.cmd = SOF_IPC_GLB_PROBE | SOF_IPC_PROBE_POINT_ADD;
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memcpy(&msg->desc[0], desc, size - sizeof(*msg));
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ret = sof_client_ipc_tx_message(cdev, msg, &reply, sizeof(reply));
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kfree(msg);
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return ret;
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}
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/**
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* sof_probes_points_remove - disconnect specified probes
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* @cdev: SOF client device
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* @buffer_id: List of probe points to disconnect
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* @num_buffer_id: Number of elements in @desc
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*
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* Removes previously connected probes from list of active probe
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* points and frees all resources on DSP side.
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*/
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static int sof_probes_points_remove(struct sof_client_dev *cdev,
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unsigned int *buffer_id, size_t num_buffer_id)
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{
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struct sof_ipc_probe_point_remove_params *msg;
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size_t size = struct_size(msg, buffer_id, num_buffer_id);
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struct sof_ipc_reply reply;
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int ret;
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msg = kmalloc(size, GFP_KERNEL);
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if (!msg)
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return -ENOMEM;
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msg->hdr.size = size;
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msg->num_elems = num_buffer_id;
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msg->hdr.cmd = SOF_IPC_GLB_PROBE | SOF_IPC_PROBE_POINT_REMOVE;
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memcpy(&msg->buffer_id[0], buffer_id, size - sizeof(*msg));
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ret = sof_client_ipc_tx_message(cdev, msg, &reply, sizeof(reply));
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kfree(msg);
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return ret;
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}
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static int sof_probes_compr_startup(struct snd_compr_stream *cstream,
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struct snd_soc_dai *dai)
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{
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struct snd_soc_card *card = snd_soc_component_get_drvdata(dai->component);
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struct sof_client_dev *cdev = snd_soc_card_get_drvdata(card);
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struct sof_probes_priv *priv = cdev->data;
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const struct sof_probes_host_ops *ops = priv->host_ops;
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int ret;
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if (sof_client_get_fw_state(cdev) == SOF_FW_CRASHED)
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return -ENODEV;
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ret = sof_client_core_module_get(cdev);
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if (ret)
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return ret;
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ret = ops->assign(cdev, cstream, dai, &priv->extractor_stream_tag);
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if (ret) {
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dev_err(dai->dev, "Failed to assign probe stream: %d\n", ret);
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priv->extractor_stream_tag = SOF_PROBES_INVALID_NODE_ID;
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sof_client_core_module_put(cdev);
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}
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return ret;
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}
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static int sof_probes_compr_shutdown(struct snd_compr_stream *cstream,
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struct snd_soc_dai *dai)
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{
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struct snd_soc_card *card = snd_soc_component_get_drvdata(dai->component);
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struct sof_client_dev *cdev = snd_soc_card_get_drvdata(card);
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struct sof_probes_priv *priv = cdev->data;
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const struct sof_probes_host_ops *ops = priv->host_ops;
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struct sof_probe_point_desc *desc;
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size_t num_desc;
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int i, ret;
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/* disconnect all probe points */
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ret = sof_probes_points_info(cdev, &desc, &num_desc);
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if (ret < 0) {
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dev_err(dai->dev, "Failed to get probe points: %d\n", ret);
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goto exit;
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}
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for (i = 0; i < num_desc; i++)
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sof_probes_points_remove(cdev, &desc[i].buffer_id, 1);
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kfree(desc);
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exit:
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ret = sof_probes_deinit(cdev);
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if (ret < 0)
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dev_err(dai->dev, "Failed to deinit probe: %d\n", ret);
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priv->extractor_stream_tag = SOF_PROBES_INVALID_NODE_ID;
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snd_compr_free_pages(cstream);
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ret = ops->free(cdev, cstream, dai);
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sof_client_core_module_put(cdev);
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return ret;
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}
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static int sof_probes_compr_set_params(struct snd_compr_stream *cstream,
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struct snd_compr_params *params,
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struct snd_soc_dai *dai)
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{
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struct snd_soc_card *card = snd_soc_component_get_drvdata(dai->component);
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struct sof_client_dev *cdev = snd_soc_card_get_drvdata(card);
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struct snd_compr_runtime *rtd = cstream->runtime;
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struct sof_probes_priv *priv = cdev->data;
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const struct sof_probes_host_ops *ops = priv->host_ops;
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int ret;
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cstream->dma_buffer.dev.type = SNDRV_DMA_TYPE_DEV_SG;
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cstream->dma_buffer.dev.dev = sof_client_get_dma_dev(cdev);
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ret = snd_compr_malloc_pages(cstream, rtd->buffer_size);
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if (ret < 0)
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return ret;
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ret = ops->set_params(cdev, cstream, params, dai);
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if (ret)
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return ret;
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ret = sof_probes_init(cdev, priv->extractor_stream_tag, rtd->dma_bytes);
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if (ret < 0) {
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dev_err(dai->dev, "Failed to init probe: %d\n", ret);
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return ret;
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}
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return 0;
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}
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static int sof_probes_compr_trigger(struct snd_compr_stream *cstream, int cmd,
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struct snd_soc_dai *dai)
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{
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struct snd_soc_card *card = snd_soc_component_get_drvdata(dai->component);
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struct sof_client_dev *cdev = snd_soc_card_get_drvdata(card);
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struct sof_probes_priv *priv = cdev->data;
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const struct sof_probes_host_ops *ops = priv->host_ops;
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return ops->trigger(cdev, cstream, cmd, dai);
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}
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static int sof_probes_compr_pointer(struct snd_compr_stream *cstream,
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struct snd_compr_tstamp *tstamp,
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struct snd_soc_dai *dai)
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{
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struct snd_soc_card *card = snd_soc_component_get_drvdata(dai->component);
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struct sof_client_dev *cdev = snd_soc_card_get_drvdata(card);
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struct sof_probes_priv *priv = cdev->data;
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const struct sof_probes_host_ops *ops = priv->host_ops;
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return ops->pointer(cdev, cstream, tstamp, dai);
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}
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static const struct snd_soc_cdai_ops sof_probes_compr_ops = {
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.startup = sof_probes_compr_startup,
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.shutdown = sof_probes_compr_shutdown,
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.set_params = sof_probes_compr_set_params,
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.trigger = sof_probes_compr_trigger,
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.pointer = sof_probes_compr_pointer,
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};
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static int sof_probes_compr_copy(struct snd_soc_component *component,
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struct snd_compr_stream *cstream,
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char __user *buf, size_t count)
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{
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struct snd_compr_runtime *rtd = cstream->runtime;
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unsigned int offset, n;
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void *ptr;
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int ret;
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if (count > rtd->buffer_size)
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count = rtd->buffer_size;
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div_u64_rem(rtd->total_bytes_transferred, rtd->buffer_size, &offset);
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ptr = rtd->dma_area + offset;
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n = rtd->buffer_size - offset;
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if (count < n) {
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ret = copy_to_user(buf, ptr, count);
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} else {
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ret = copy_to_user(buf, ptr, n);
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ret += copy_to_user(buf + n, rtd->dma_area, count - n);
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}
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if (ret)
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return count - ret;
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return count;
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}
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static const struct snd_compress_ops sof_probes_compressed_ops = {
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.copy = sof_probes_compr_copy,
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};
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/**
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* strsplit_u32 - Split string into sequence of u32 tokens
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* @buf: String to split into tokens.
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* @delim: String containing delimiter characters.
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* @tkns: Returned u32 sequence pointer.
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* @num_tkns: Returned number of tokens obtained.
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*/
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static int strsplit_u32(char *buf, const char *delim, u32 **tkns, size_t *num_tkns)
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{
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char *s;
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u32 *data, *tmp;
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size_t count = 0;
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size_t cap = 32;
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int ret = 0;
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*tkns = NULL;
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*num_tkns = 0;
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data = kcalloc(cap, sizeof(*data), GFP_KERNEL);
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if (!data)
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return -ENOMEM;
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|
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while ((s = strsep(&buf, delim)) != NULL) {
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ret = kstrtouint(s, 0, data + count);
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|
if (ret)
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goto exit;
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if (++count >= cap) {
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cap *= 2;
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tmp = krealloc(data, cap * sizeof(*data), GFP_KERNEL);
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|
if (!tmp) {
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ret = -ENOMEM;
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goto exit;
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|
}
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|
data = tmp;
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}
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}
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|
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if (!count)
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goto exit;
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*tkns = kmemdup(data, count * sizeof(*data), GFP_KERNEL);
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if (!(*tkns)) {
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ret = -ENOMEM;
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goto exit;
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|
}
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*num_tkns = count;
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exit:
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kfree(data);
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return ret;
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}
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|
|
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static int tokenize_input(const char __user *from, size_t count,
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|
loff_t *ppos, u32 **tkns, size_t *num_tkns)
|
|
{
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char *buf;
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|
int ret;
|
|
|
|
buf = kmalloc(count + 1, GFP_KERNEL);
|
|
if (!buf)
|
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return -ENOMEM;
|
|
|
|
ret = simple_write_to_buffer(buf, count, ppos, from, count);
|
|
if (ret != count) {
|
|
ret = ret >= 0 ? -EIO : ret;
|
|
goto exit;
|
|
}
|
|
|
|
buf[count] = '\0';
|
|
ret = strsplit_u32(buf, ",", tkns, num_tkns);
|
|
exit:
|
|
kfree(buf);
|
|
return ret;
|
|
}
|
|
|
|
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 exit;
|
|
|
|
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);
|
|
|
|
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);
|
|
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;
|
|
size_t num_tkns, bytes;
|
|
u32 *tkns;
|
|
int ret, err;
|
|
|
|
if (priv->extractor_stream_tag == SOF_PROBES_INVALID_NODE_ID) {
|
|
dev_warn(dev, "no extractor stream running\n");
|
|
return -ENOENT;
|
|
}
|
|
|
|
ret = tokenize_input(from, count, ppos, &tkns, &num_tkns);
|
|
if (ret < 0)
|
|
return ret;
|
|
bytes = sizeof(*tkns) * num_tkns;
|
|
if (!num_tkns || (bytes % sizeof(*desc))) {
|
|
ret = -EINVAL;
|
|
goto exit;
|
|
}
|
|
|
|
desc = (struct sof_probe_point_desc *)tkns;
|
|
|
|
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(tkns);
|
|
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;
|
|
size_t num_tkns;
|
|
u32 *tkns;
|
|
int ret, err;
|
|
|
|
if (priv->extractor_stream_tag == SOF_PROBES_INVALID_NODE_ID) {
|
|
dev_warn(dev, "no extractor stream running\n");
|
|
return -ENOENT;
|
|
}
|
|
|
|
ret = tokenize_input(from, count, ppos, &tkns, &num_tkns);
|
|
if (ret < 0)
|
|
return ret;
|
|
if (!num_tkns) {
|
|
ret = -EINVAL;
|
|
goto exit;
|
|
}
|
|
|
|
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, tkns, num_tkns);
|
|
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(tkns);
|
|
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,
|
|
};
|
|
|
|
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;
|
|
|
|
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->assign || !ops->free || !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);
|