Message-Id: <20180418153157.1960-12-srinivas.kandagatla@linaro.org>
Date:   Wed, 18 Apr 2018 16:31:45 +0100
From:   srinivas.kandagatla@...aro.org
To:     andy.gross@...aro.org, broonie@...nel.org,
        linux-arm-msm@...r.kernel.org, alsa-devel@...a-project.org,
        robh+dt@...nel.org
Cc:     gregkh@...uxfoundation.org, david.brown@...aro.org,
        mark.rutland@....com, lgirdwood@...il.com, plai@...eaurora.org,
        bgoswami@...eaurora.org, tiwai@...e.com, perex@...ex.cz,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, rohkumar@....qualcomm.com,
        spatakok@....qualcomm.com,
        Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
Subject: [PATCH v5 11/23] ASoC: qdsp6: q6adm: Add q6adm driver

From: Srinivas Kandagatla <srinivas.kandagatla@...aro.org>

This patch adds support to Q6ADM (Audio Device Manager) module in
q6dsp. ADM performs routing between audio streams and AFE ports.
It does Rate matching for streams going to devices driven by
different clocks, it handles volume ramping, Mixing with channel
and bit-width. ADM creates and destroys dynamic COPP services
for device-related audio processing as needed.

This patch adds basic support to ADM.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
Reviewed-and-tested-by: Rohit kumar <rohitkr@...eaurora.org>
---
 sound/soc/qcom/Kconfig        |   4 +
 sound/soc/qcom/qdsp6/Makefile |   1 +
 sound/soc/qcom/qdsp6/q6adm.c  | 633 ++++++++++++++++++++++++++++++++++++++++++
 sound/soc/qcom/qdsp6/q6adm.h  |  25 ++
 4 files changed, 663 insertions(+)
 create mode 100644 sound/soc/qcom/qdsp6/q6adm.c
 create mode 100644 sound/soc/qcom/qdsp6/q6adm.h

diff --git a/sound/soc/qcom/Kconfig b/sound/soc/qcom/Kconfig
index f50c76d712c0..5090ffa75648 100644
--- a/sound/soc/qcom/Kconfig
+++ b/sound/soc/qcom/Kconfig
@@ -50,11 +50,15 @@ config SND_SOC_QDSP6_COMMON
 config SND_SOC_QDSP6_AFE
 	tristate
 
+config SND_SOC_QDSP6_ADM
+	tristate
+
 config SND_SOC_QDSP6
 	tristate "SoC ALSA audio driver for QDSP6"
 	depends on QCOM_APR && HAS_DMA
 	select SND_SOC_QDSP6_COMMON
 	select SND_SOC_QDSP6_AFE
+	select SND_SOC_QDSP6_ADM
 	help
 	 To add support for MSM QDSP6 Soc Audio.
 	 This will enable sound soc platform specific
diff --git a/sound/soc/qcom/qdsp6/Makefile b/sound/soc/qcom/qdsp6/Makefile
index 9ec951e0833b..930944425051 100644
--- a/sound/soc/qcom/qdsp6/Makefile
+++ b/sound/soc/qcom/qdsp6/Makefile
@@ -1,2 +1,3 @@
 obj-$(CONFIG_SND_SOC_QDSP6_COMMON) += q6dsp-common.o
 obj-$(CONFIG_SND_SOC_QDSP6_AFE) += q6afe.o
+obj-$(CONFIG_SND_SOC_QDSP6_ADM) += q6adm.o
diff --git a/sound/soc/qcom/qdsp6/q6adm.c b/sound/soc/qcom/qdsp6/q6adm.c
new file mode 100644
index 000000000000..abd171659469
--- /dev/null
+++ b/sound/soc/qcom/qdsp6/q6adm.c
@@ -0,0 +1,633 @@
+// SPDX-License-Identifier: GPL-2.0
+// Copyright (c) 2011-2017, The Linux Foundation
+// Copyright (c) 2018, Linaro Limited
+
+#include <linux/slab.h>
+#include <linux/wait.h>
+#include <linux/kernel.h>
+#include <linux/device.h>
+#include <linux/module.h>
+#include <linux/sched.h>
+#include <linux/jiffies.h>
+#include <linux/of.h>
+#include <linux/of_platform.h>
+#include <linux/kref.h>
+#include <linux/wait.h>
+#include <linux/soc/qcom/apr.h>
+#include <linux/platform_device.h>
+#include <sound/asound.h>
+#include "q6adm.h"
+#include "q6afe.h"
+#include "q6core.h"
+#include "q6dsp-errno.h"
+#include "q6dsp-common.h"
+
+#define ADM_CMD_DEVICE_OPEN_V5		0x00010326
+#define ADM_CMDRSP_DEVICE_OPEN_V5	0x00010329
+#define ADM_CMD_DEVICE_CLOSE_V5		0x00010327
+#define ADM_CMD_MATRIX_MAP_ROUTINGS_V5	0x00010325
+
+#define TIMEOUT_MS 1000
+#define RESET_COPP_ID 99
+#define INVALID_COPP_ID 0xFF
+/* Definition for a legacy device session. */
+#define ADM_LEGACY_DEVICE_SESSION	0
+#define ADM_MATRIX_ID_AUDIO_RX		0
+#define ADM_MATRIX_ID_AUDIO_TX		1
+
+struct copp {
+	int afe_port;
+	int copp_idx;
+	int id;
+	int topology;
+	int mode;
+	int rate;
+	int bit_width;
+	int channels;
+	int app_type;
+	int acdb_id;
+
+	struct aprv2_ibasic_rsp_result_t result;
+	struct kref refcount;
+	wait_queue_head_t wait;
+	struct list_head node;
+	struct q6adm *adm;
+};
+
+struct q6adm {
+	struct apr_device *apr;
+	struct device *dev;
+	struct q6core_svc_api_info ainfo;
+	unsigned long copp_bitmap[AFE_MAX_PORTS];
+	struct list_head copps_list;
+	spinlock_t copps_list_lock;
+	struct aprv2_ibasic_rsp_result_t result;
+	struct mutex lock;
+	wait_queue_head_t matrix_map_wait;
+	struct platform_device *pdev_routing;
+};
+
+struct adm_cmd_device_open_v5 {
+	struct apr_hdr hdr;
+	u16 flags;
+	u16 mode_of_operation;
+	u16 endpoint_id_1;
+	u16 endpoint_id_2;
+	u32 topology_id;
+	u16 dev_num_channel;
+	u16 bit_width;
+	u32 sample_rate;
+	u8 dev_channel_mapping[8];
+} __packed;
+
+struct adm_cmd_matrix_map_routings_v5 {
+	struct apr_hdr hdr;
+	u32 matrix_id;
+	u32 num_sessions;
+} __packed;
+
+struct adm_session_map_node_v5 {
+	u16 session_id;
+	u16 num_copps;
+} __packed;
+
+static struct copp *adm_find_copp(struct q6adm *adm, int port_idx,
+				  int copp_idx)
+{
+	struct copp *c = NULL;
+	unsigned long flags;
+
+	spin_lock_irqsave(&adm->copps_list_lock, flags);
+	list_for_each_entry(c, &adm->copps_list, node) {
+		if ((port_idx == c->afe_port) && (copp_idx == c->copp_idx))
+			break;
+	}
+
+	spin_unlock_irqrestore(&adm->copps_list_lock, flags);
+
+	return c;
+
+}
+
+static int q6adm_callback(struct apr_device *adev,
+			struct apr_client_message *data)
+{
+	struct aprv2_ibasic_rsp_result_t *result = data->payload;
+	int port_idx, copp_idx;
+	struct copp *copp;
+	struct q6adm *adm = dev_get_drvdata(&adev->dev);
+
+	if (!data->payload_size)
+		return 0;
+
+	copp_idx = (data->token) & 0XFF;
+	port_idx = ((data->token) >> 16) & 0xFF;
+	if (port_idx < 0 || port_idx >= AFE_MAX_PORTS) {
+		dev_err(&adev->dev, "Invalid port idx %d token %d\n",
+		       port_idx, data->token);
+		return 0;
+	}
+	if (copp_idx < 0 || copp_idx >= MAX_COPPS_PER_PORT) {
+		dev_err(&adev->dev, "Invalid copp idx %d token %d\n",
+			copp_idx, data->token);
+		return 0;
+	}
+
+	switch (data->opcode) {
+	case APR_BASIC_RSP_RESULT: {
+		if (result->status != 0) {
+			dev_err(&adev->dev, "cmd = 0x%x return error = 0x%x\n",
+				result->opcode, result->status);
+		}
+		switch (result->opcode) {
+		case ADM_CMD_DEVICE_OPEN_V5:
+		case ADM_CMD_DEVICE_CLOSE_V5:
+			copp = adm_find_copp(adm, port_idx, copp_idx);
+			if (!copp)
+				return 0;
+
+			copp->result = *result;
+			wake_up(&copp->wait);
+			break;
+		case ADM_CMD_MATRIX_MAP_ROUTINGS_V5:
+			adm->result = *result;
+			wake_up(&adm->matrix_map_wait);
+			break;
+
+		default:
+			dev_err(&adev->dev, "Unknown Cmd: 0x%x\n",
+				result->opcode);
+			break;
+		}
+		return 0;
+	}
+	case ADM_CMDRSP_DEVICE_OPEN_V5: {
+		struct adm_cmd_rsp_device_open_v5 {
+			u32 status;
+			u16 copp_id;
+			u16 reserved;
+		} __packed * open = data->payload;
+
+		open = data->payload;
+		copp = adm_find_copp(adm, port_idx, copp_idx);
+		if (!copp)
+			return 0;
+
+		if (open->copp_id == INVALID_COPP_ID) {
+			dev_err(&adev->dev, "Invalid coppid rxed %d\n",
+				open->copp_id);
+			copp->result.status = ADSP_EBADPARAM;
+			wake_up(&copp->wait);
+			break;
+		}
+		copp->result.opcode = data->opcode;
+		copp->id = open->copp_id;
+		wake_up(&copp->wait);
+	}
+	break;
+	default:
+		dev_err(&adev->dev, "Unknown cmd:0x%x\n",
+		       data->opcode);
+		break;
+	}
+
+	return 0;
+}
+
+static struct copp *adm_alloc_copp(struct q6adm *adm, int port_idx)
+{
+	struct copp *c;
+	int idx;
+
+	idx = find_first_zero_bit(&adm->copp_bitmap[port_idx],
+				  MAX_COPPS_PER_PORT);
+
+	if (idx > MAX_COPPS_PER_PORT)
+		return ERR_PTR(-EBUSY);
+
+	c = kzalloc(sizeof(*c), GFP_KERNEL);
+	if (!c)
+		return ERR_PTR(-ENOMEM);
+
+	set_bit(idx, &adm->copp_bitmap[port_idx]);
+	c->copp_idx = idx;
+	c->afe_port = port_idx;
+	c->adm = adm;
+
+	init_waitqueue_head(&c->wait);
+
+	return c;
+}
+
+static int q6adm_apr_send_copp_pkt(struct q6adm *adm, struct copp *copp,
+				   void *data, uint32_t rsp_opcode)
+{
+	struct device *dev = adm->dev;
+	struct apr_hdr *hdr = data;
+	uint32_t opcode = hdr->opcode;
+	int ret;
+
+	mutex_lock(&adm->lock);
+	copp->result.opcode = 0;
+	copp->result.status = 0;
+	ret = apr_send_pkt(adm->apr, data);
+	if (ret < 0) {
+		dev_err(dev, "Failed to send APR packet\n");
+		ret = -EINVAL;
+		goto err;
+	}
+
+	/* Wait for the callback with copp id */
+	if (rsp_opcode)
+		ret = wait_event_timeout(copp->wait,
+					 (copp->result.opcode == opcode) ||
+					 (copp->result.opcode == rsp_opcode),
+					 msecs_to_jiffies(TIMEOUT_MS));
+	else
+		ret = wait_event_timeout(copp->wait,
+					 (copp->result.opcode == opcode),
+					 msecs_to_jiffies(TIMEOUT_MS));
+
+	if (!ret) {
+		dev_err(dev, "ADM copp cmd timedout\n");
+		ret = -EINVAL;
+	} else if (copp->result.status > 0) {
+		dev_err(dev, "DSP returned error[%d]\n",
+			copp->result.status);
+		ret = -EINVAL;
+	}
+
+err:
+	mutex_unlock(&adm->lock);
+	return ret;
+}
+
+static int q6adm_device_close(struct q6adm *adm, struct copp *copp,
+			      int port_id, int copp_idx)
+{
+	struct apr_hdr close = {0};
+
+	close.hdr_field = APR_HDR_FIELD(APR_MSG_TYPE_SEQ_CMD,
+					APR_HDR_LEN(APR_HDR_SIZE),
+					APR_PKT_VER);
+	close.pkt_size = sizeof(close);
+	close.src_svc = APR_SVC_ADM;
+	close.src_domain = APR_DOMAIN_APPS;
+	close.src_port = port_id;
+	close.dest_svc = APR_SVC_ADM;
+	close.dest_domain = APR_DOMAIN_ADSP;
+	close.dest_port = copp->id;
+	close.token = port_id << 16 | copp_idx;
+	close.opcode = ADM_CMD_DEVICE_CLOSE_V5;
+
+	return q6adm_apr_send_copp_pkt(adm, copp, &close, 0);
+}
+
+static void adm_free_copp(struct kref *ref)
+{
+	struct copp *c = container_of(ref, struct copp, refcount);
+	struct q6adm *adm = c->adm;
+	int port_idx = c->afe_port;
+	int copp_idx = c->copp_idx;
+	unsigned long flags;
+	int ret;
+
+	ret = q6adm_device_close(adm, c, port_idx, copp_idx);
+	if (ret < 0)
+		dev_err(adm->dev, "Failed to close copp %d\n", ret);
+
+	clear_bit(c->copp_idx, &adm->copp_bitmap[port_idx]);
+	spin_lock_irqsave(&adm->copps_list_lock, flags);
+	list_del(&c->node);
+	spin_unlock_irqrestore(&adm->copps_list_lock, flags);
+	kfree(c);
+}
+
+static struct copp *adm_find_matching_copp(struct q6adm *adm,
+					   int port_id, int topology,
+					   int mode, int rate, int channel_mode,
+					   int bit_width, int app_type)
+{
+	unsigned long flags;
+	struct copp *c;
+
+	spin_lock_irqsave(&adm->copps_list_lock, flags);
+
+	list_for_each_entry(c, &adm->copps_list, node) {
+		if ((port_id == c->afe_port) && (topology == c->topology) &&
+		    (mode == c->mode) && (rate == c->rate) &&
+		    (bit_width == c->bit_width) && (app_type == c->app_type)) {
+			spin_unlock_irqrestore(&adm->copps_list_lock, flags);
+			return c;
+		}
+	}
+	spin_unlock_irqrestore(&adm->copps_list_lock, flags);
+
+	c = adm_alloc_copp(adm, port_id);
+	if (IS_ERR_OR_NULL(c))
+		return ERR_CAST(c);
+
+	kref_init(&c->refcount);
+	c->topology = topology;
+	c->mode = mode;
+	c->rate = rate;
+	c->channels = channel_mode;
+	c->bit_width = bit_width;
+	c->app_type = app_type;
+
+	spin_lock_irqsave(&adm->copps_list_lock, flags);
+	list_add_tail(&c->node, &adm->copps_list);
+	spin_unlock_irqrestore(&adm->copps_list_lock, flags);
+
+	return c;
+
+}
+
+static int q6adm_device_open(struct q6adm *adm, struct copp *copp, int port_id,
+			     int path, int topology, int channel_mode,
+			     int bit_width, int rate)
+{
+	struct adm_cmd_device_open_v5 open = { {0} };
+	int afe_port = q6afe_get_port_id(port_id);
+	int ret;
+
+	open.hdr.hdr_field = APR_HDR_FIELD(APR_MSG_TYPE_SEQ_CMD,
+					   APR_HDR_LEN(APR_HDR_SIZE),
+					   APR_PKT_VER);
+	open.hdr.pkt_size = sizeof(open);
+	open.hdr.src_svc = APR_SVC_ADM;
+	open.hdr.src_domain = APR_DOMAIN_APPS;
+	open.hdr.src_port = afe_port;
+	open.hdr.dest_svc = APR_SVC_ADM;
+	open.hdr.dest_domain = APR_DOMAIN_ADSP;
+	open.hdr.dest_port = afe_port;
+	open.hdr.token = port_id << 16 | copp->copp_idx;
+	open.hdr.opcode = ADM_CMD_DEVICE_OPEN_V5;
+	open.flags = ADM_LEGACY_DEVICE_SESSION;
+	open.mode_of_operation = path;
+	open.endpoint_id_1 = afe_port;
+	open.topology_id = topology;
+	open.dev_num_channel = channel_mode & 0x00FF;
+	open.bit_width = bit_width;
+	open.sample_rate = rate;
+
+	ret = q6dsp_map_channels(&open.dev_channel_mapping[0],
+				 channel_mode);
+	if (ret)
+		return ret;
+
+	return q6adm_apr_send_copp_pkt(adm, copp, &open,
+				       ADM_CMDRSP_DEVICE_OPEN_V5);
+}
+
+/**
+ * q6adm_open() - open adm and grab a free copp
+ *
+ * @dev: Pointer to adm child device.
+ * @port_id: port id
+ * @path: playback or capture path.
+ * @rate: rate at which copp is required.
+ * @channel_mode: channel mode
+ * @topology: adm topology id
+ * @perf_mode: performace mode.
+ * @bit_width: audio sample bit width
+ * @app_type: Application type.
+ * @acdb_id: ACDB id
+ *
+ * Return: Will be an negative on error or a valid copp index on success.
+ */
+int q6adm_open(struct device *dev, int port_id, int path, int rate,
+	       int channel_mode, int topology, int perf_mode,
+	       uint16_t bit_width, int app_type, int acdb_id)
+{
+	struct q6adm *adm = dev_get_drvdata(dev->parent);
+	struct copp *copp;
+	int ret = 0;
+
+	if (port_id < 0) {
+		dev_err(dev, "Invalid port_id 0x%x\n", port_id);
+		return -EINVAL;
+	}
+
+	copp = adm_find_matching_copp(adm, port_id, topology, perf_mode,
+				      rate, channel_mode, bit_width, app_type);
+	if (kref_read(&copp->refcount) == 1) {
+		/* not initialized yet */
+		ret = q6adm_device_open(adm, copp, port_id, path, topology,
+				  channel_mode, bit_width, rate);
+		if (ret < 0)
+			return ret;
+	}
+
+	kref_get(&copp->refcount);
+
+	return copp->copp_idx;
+}
+EXPORT_SYMBOL_GPL(q6adm_open);
+
+/**
+ * q6adm_matrix_map() - Map asm streams and afe ports using payload
+ *
+ * @dev: Pointer to adm child device.
+ * @path: playback or capture path.
+ * @payload_map: map between session id and afe ports.
+ * @perf_mode: Performace mode.
+ *
+ * Return: Will be an negative on error or a zero on success.
+ */
+int q6adm_matrix_map(struct device *dev, int path,
+		     struct route_payload payload_map, int perf_mode)
+{
+	struct q6adm *adm = dev_get_drvdata(dev->parent);
+	struct adm_cmd_matrix_map_routings_v5 *route;
+	struct adm_session_map_node_v5 *node;
+	uint16_t *copps_list;
+	int cmd_size, ret, i, copp_idx;
+	void *matrix_map = NULL;
+	struct copp *copp;
+
+	/* Assumes port_ids have already been validated during adm_open */
+	cmd_size = (sizeof(*route) +
+		    sizeof(*node) +
+		    (sizeof(uint32_t) * payload_map.num_copps));
+	matrix_map = kzalloc(cmd_size, GFP_KERNEL);
+	if (!matrix_map)
+		return -ENOMEM;
+
+	route = matrix_map;
+	route->hdr.hdr_field = APR_HDR_FIELD(APR_MSG_TYPE_SEQ_CMD,
+					     APR_HDR_LEN(APR_HDR_SIZE),
+					     APR_PKT_VER);
+	route->hdr.pkt_size = cmd_size;
+	route->hdr.src_svc = 0;
+	route->hdr.src_domain = APR_DOMAIN_APPS;
+	route->hdr.dest_svc = APR_SVC_ADM;
+	route->hdr.dest_domain = APR_DOMAIN_ADSP;
+	route->hdr.token = 0;
+	route->hdr.opcode = ADM_CMD_MATRIX_MAP_ROUTINGS_V5;
+	route->num_sessions = 1;
+
+	switch (path) {
+	case ADM_PATH_PLAYBACK:
+		route->matrix_id = ADM_MATRIX_ID_AUDIO_RX;
+		break;
+	case ADM_PATH_LIVE_REC:
+		route->matrix_id = ADM_MATRIX_ID_AUDIO_TX;
+		break;
+	default:
+		dev_err(dev, "Wrong path set[%d]\n", path);
+
+		break;
+	}
+
+	node = matrix_map + sizeof(*route);
+	node->session_id = payload_map.session_id;
+	node->num_copps = payload_map.num_copps;
+	copps_list = matrix_map + sizeof(*route) + sizeof(*node);
+
+	for (i = 0; i < payload_map.num_copps; i++) {
+		int port_idx = payload_map.port_id[i];
+
+		if (port_idx < 0) {
+			dev_err(dev, "Invalid port_id 0x%x\n",
+				payload_map.port_id[i]);
+			ret = -EINVAL;
+			goto fail_cmd;
+		}
+		copp_idx = payload_map.copp_idx[i];
+
+		copp = adm_find_copp(adm, port_idx, copp_idx);
+		if (!copp) {
+			ret = -EINVAL;
+			goto fail_cmd;
+		}
+
+		copps_list[i] = copp->id;
+	}
+
+	mutex_lock(&adm->lock);
+	adm->result.status = 0;
+	adm->result.opcode = 0;
+
+	ret = apr_send_pkt(adm->apr, matrix_map);
+	if (ret < 0) {
+		dev_err(dev, "routing for syream %d failed ret %d\n",
+		       payload_map.session_id, ret);
+		goto fail_cmd;
+	}
+	ret = wait_event_timeout(adm->matrix_map_wait,
+				 adm->result.opcode == route->hdr.opcode,
+				 msecs_to_jiffies(TIMEOUT_MS));
+	if (!ret) {
+		dev_err(dev, "routing for syream %d failed\n",
+		       payload_map.session_id);
+		ret = -ETIMEDOUT;
+		goto fail_cmd;
+	} else if (adm->result.status > 0) {
+		dev_err(dev, "DSP returned error[%d]\n",
+			adm->result.status);
+		ret = -EINVAL;
+		goto fail_cmd;
+	}
+
+fail_cmd:
+	mutex_unlock(&adm->lock);
+	kfree(matrix_map);
+	return ret;
+}
+EXPORT_SYMBOL_GPL(q6adm_matrix_map);
+
+/**
+ * q6adm_close() - Close adm copp
+ *
+ * @dev: Pointer to adm child device.
+ * @port_id: afe port id.
+ * @perf_mode: perf_mode mode
+ * @copp_idx: copp index to close
+ *
+ * Return: Will be an negative on error or a zero on success.
+ */
+int q6adm_close(struct device *dev, int port_id, int perf_mode, int copp_idx)
+{
+	struct q6adm *adm = dev_get_drvdata(dev->parent);
+	struct copp *copp;
+
+	if (port_id < 0) {
+		dev_err(dev, "Invalid port_id 0x%x\n", port_id);
+		return -EINVAL;
+	}
+
+	if ((copp_idx < 0) || (copp_idx >= MAX_COPPS_PER_PORT)) {
+		dev_err(dev, "Invalid copp idx: %d\n", copp_idx);
+		return -EINVAL;
+	}
+
+	copp = adm_find_copp(adm, port_id, copp_idx);
+	if (!copp)
+		return -EINVAL;
+
+	kref_put(&copp->refcount, adm_free_copp);
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(q6adm_close);
+
+static int q6adm_probe(struct apr_device *adev)
+{
+	struct device *dev = &adev->dev;
+	struct device_node *dais_np;
+	struct q6adm *adm;
+
+	adm = devm_kzalloc(&adev->dev, sizeof(*adm), GFP_KERNEL);
+	if (!adm)
+		return -ENOMEM;
+
+	adm->apr = adev;
+	dev_set_drvdata(&adev->dev, adm);
+	adm->dev = dev;
+	q6core_get_svc_api_info(adev->svc_id, &adm->ainfo);
+	mutex_init(&adm->lock);
+	init_waitqueue_head(&adm->matrix_map_wait);
+
+	INIT_LIST_HEAD(&adm->copps_list);
+	spin_lock_init(&adm->copps_list_lock);
+
+	dais_np = of_get_child_by_name(dev->of_node, "routing");
+	if (dais_np) {
+		adm->pdev_routing = of_platform_device_create(dais_np,
+							   "q6routing", dev);
+		of_node_put(dais_np);
+	}
+
+	return 0;
+}
+
+static int q6adm_remove(struct apr_device *adev)
+{
+	struct q6adm *adm = dev_get_drvdata(&adev->dev);
+
+	if (adm->pdev_routing)
+		of_platform_device_destroy(&adm->pdev_routing->dev, NULL);
+
+	return 0;
+}
+
+static const struct of_device_id q6adm_device_id[]  = {
+	{ .compatible = "qcom,q6adm" },
+	{},
+};
+MODULE_DEVICE_TABLE(of, q6adm_device_id);
+
+static struct apr_driver qcom_q6adm_driver = {
+	.probe = q6adm_probe,
+	.remove = q6adm_remove,
+	.callback = q6adm_callback,
+	.driver = {
+		.name = "qcom-q6adm",
+		.of_match_table = of_match_ptr(q6adm_device_id),
+	},
+};
+
+module_apr_driver(qcom_q6adm_driver);
+MODULE_DESCRIPTION("Q6 Audio Device Manager");
+MODULE_LICENSE("GPL v2");
diff --git a/sound/soc/qcom/qdsp6/q6adm.h b/sound/soc/qcom/qdsp6/q6adm.h
new file mode 100644
index 000000000000..7ad278399ec0
--- /dev/null
+++ b/sound/soc/qcom/qdsp6/q6adm.h
@@ -0,0 +1,25 @@
+// SPDX-License-Identifier: GPL-2.0
+#ifndef __Q6_ADM_V2_H__
+#define __Q6_ADM_V2_H__
+
+#define ADM_PATH_PLAYBACK	0x1
+#define ADM_PATH_LIVE_REC	0x2
+#define MAX_COPPS_PER_PORT	8
+#define NULL_COPP_TOPOLOGY	0x00010312
+
+/* multiple copp per stream. */
+struct route_payload {
+	int num_copps;
+	int session_id;
+	int copp_idx[MAX_COPPS_PER_PORT];
+	int port_id[MAX_COPPS_PER_PORT];
+};
+
+int q6adm_open(struct device *dev, int port_id, int path, int rate,
+	       int channel_mode, int topology, int perf_mode,
+	       uint16_t bit_width, int app_type, int acdb_id);
+int q6adm_close(struct device *dev, int port, int topology, int perf_mode);
+int q6adm_matrix_map(struct device *dev, int path,
+		     struct route_payload payload_map, int perf_mode);
+
+#endif /* __Q6_ADM_V2_H__ */
-- 
2.16.2

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