[linux-block.git] / drivers / hid / amd-sfh-hid / amd_sfh_client.c

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 *  AMD SFH Client Layer
 *  Copyright 2020-2021 Advanced Micro Devices, Inc.
 *  Authors: Nehal Bakulchandra Shah <Nehal-Bakulchandra.Shah@amd.com>
 *	     Sandeep Singh <Sandeep.singh@amd.com>
 *	     Basavaraj Natikar <Basavaraj.Natikar@amd.com>
 */

#include <linux/dma-mapping.h>
#include <linux/hid.h>
#include <linux/list.h>
#include <linux/slab.h>
#include <linux/workqueue.h>
#include <linux/errno.h>

#include "hid_descriptor/amd_sfh_hid_desc.h"
#include "amd_sfh_pcie.h"
#include "amd_sfh_hid.h"

void amd_sfh_set_report(struct hid_device *hid, int report_id,
			int report_type)
{
	struct amdtp_hid_data *hid_data = hid->driver_data;
	struct amdtp_cl_data *cli_data = hid_data->cli_data;
	int i;

	for (i = 0; i < cli_data->num_hid_devices; i++) {
		if (cli_data->hid_sensor_hubs[i] == hid) {
			cli_data->cur_hid_dev = i;
			break;
		}
	}
	amdtp_hid_wakeup(hid);
}

int amd_sfh_get_report(struct hid_device *hid, int report_id, int report_type)
{
	struct amdtp_hid_data *hid_data = hid->driver_data;
	struct amdtp_cl_data *cli_data = hid_data->cli_data;
	struct request_list *req_list = &cli_data->req_list;
	int i;

	for (i = 0; i < cli_data->num_hid_devices; i++) {
		if (cli_data->hid_sensor_hubs[i] == hid) {
			struct request_list *new = kzalloc(sizeof(*new), GFP_KERNEL);

			if (!new)
				return -ENOMEM;

			new->current_index = i;
			new->sensor_idx = cli_data->sensor_idx[i];
			new->hid = hid;
			new->report_type = report_type;
			new->report_id = report_id;
			cli_data->report_id[i] = report_id;
			cli_data->request_done[i] = false;
			list_add(&new->list, &req_list->list);
			break;
		}
	}
	schedule_delayed_work(&cli_data->work, 0);
	return 0;
}

void amd_sfh_work(struct work_struct *work)
{
	struct amdtp_cl_data *cli_data = container_of(work, struct amdtp_cl_data, work.work);
	struct request_list *req_list = &cli_data->req_list;
	struct amd_input_data *in_data = cli_data->in_data;
	struct request_list *req_node;
	u8 current_index, sensor_index;
	struct amd_mp2_ops *mp2_ops;
	struct amd_mp2_dev *mp2;
	u8 report_id, node_type;
	u8 report_size = 0;

	req_node = list_last_entry(&req_list->list, struct request_list, list);
	list_del(&req_node->list);
	current_index = req_node->current_index;
	sensor_index = req_node->sensor_idx;
	report_id = req_node->report_id;
	node_type = req_node->report_type;
	kfree(req_node);

	mp2 = container_of(in_data, struct amd_mp2_dev, in_data);
	mp2_ops = mp2->mp2_ops;
	if (node_type == HID_FEATURE_REPORT) {
		report_size = mp2_ops->get_feat_rep(sensor_index, report_id,
						    cli_data->feature_report[current_index]);
		if (report_size)
			hid_input_report(cli_data->hid_sensor_hubs[current_index],
					 cli_data->report_type[current_index],
					 cli_data->feature_report[current_index], report_size, 0);
		else
			pr_err("AMDSFH: Invalid report size\n");

	} else if (node_type == HID_INPUT_REPORT) {
		report_size = mp2_ops->get_in_rep(current_index, sensor_index, report_id, in_data);
		if (report_size)
			hid_input_report(cli_data->hid_sensor_hubs[current_index],
					 cli_data->report_type[current_index],
					 in_data->input_report[current_index], report_size, 0);
		else
			pr_err("AMDSFH: Invalid report size\n");
	}
	cli_data->cur_hid_dev = current_index;
	cli_data->sensor_requested_cnt[current_index] = 0;
	amdtp_hid_wakeup(cli_data->hid_sensor_hubs[current_index]);
}

void amd_sfh_work_buffer(struct work_struct *work)
{
	struct amdtp_cl_data *cli_data = container_of(work, struct amdtp_cl_data, work_buffer.work);
	struct amd_input_data *in_data = cli_data->in_data;
	struct amd_mp2_dev *mp2;
	u8 report_size;
	int i;

	for (i = 0; i < cli_data->num_hid_devices; i++) {
		if (cli_data->sensor_sts[i] == SENSOR_ENABLED) {
			mp2 = container_of(in_data, struct amd_mp2_dev, in_data);
			report_size = mp2->mp2_ops->get_in_rep(i, cli_data->sensor_idx[i],
							       cli_data->report_id[i], in_data);
			hid_input_report(cli_data->hid_sensor_hubs[i], HID_INPUT_REPORT,
					 in_data->input_report[i], report_size, 0);
		}
	}
	schedule_delayed_work(&cli_data->work_buffer, msecs_to_jiffies(AMD_SFH_IDLE_LOOP));
}

static u32 amd_sfh_wait_for_response(struct amd_mp2_dev *mp2, u8 sid, u32 sensor_sts)
{
	if (mp2->mp2_ops->response)
		sensor_sts = mp2->mp2_ops->response(mp2, sid, sensor_sts);

	return sensor_sts;
}

static const char *get_sensor_name(int idx)
{
	switch (idx) {
	case accel_idx:
		return "accelerometer";
	case gyro_idx:
		return "gyroscope";
	case mag_idx:
		return "magnetometer";
	case als_idx:
		return "ALS";
	case HPD_IDX:
		return "HPD";
	default:
		return "unknown sensor type";
	}
}

static void amd_sfh_resume(struct amd_mp2_dev *mp2)
{
	struct amdtp_cl_data *cl_data = mp2->cl_data;
	struct amd_mp2_sensor_info info;
	int i, status;

	for (i = 0; i < cl_data->num_hid_devices; i++) {
		if (cl_data->sensor_sts[i] == SENSOR_DISABLED) {
			info.period = AMD_SFH_IDLE_LOOP;
			info.sensor_idx = cl_data->sensor_idx[i];
			info.dma_address = cl_data->sensor_dma_addr[i];
			mp2->mp2_ops->start(mp2, info);
			status = amd_sfh_wait_for_response
					(mp2, cl_data->sensor_idx[i], SENSOR_ENABLED);
			if (status == SENSOR_ENABLED)
				cl_data->sensor_sts[i] = SENSOR_ENABLED;
			dev_dbg(&mp2->pdev->dev, "resume sid 0x%x (%s) status 0x%x\n",
				cl_data->sensor_idx[i], get_sensor_name(cl_data->sensor_idx[i]),
				cl_data->sensor_sts[i]);
		}
	}

	schedule_delayed_work(&cl_data->work_buffer, msecs_to_jiffies(AMD_SFH_IDLE_LOOP));
	amd_sfh_clear_intr(mp2);
}

static void amd_sfh_suspend(struct amd_mp2_dev *mp2)
{
	struct amdtp_cl_data *cl_data = mp2->cl_data;
	int i, status;

	for (i = 0; i < cl_data->num_hid_devices; i++) {
		if (cl_data->sensor_idx[i] != HPD_IDX &&
		    cl_data->sensor_sts[i] == SENSOR_ENABLED) {
			mp2->mp2_ops->stop(mp2, cl_data->sensor_idx[i]);
			status = amd_sfh_wait_for_response
					(mp2, cl_data->sensor_idx[i], SENSOR_DISABLED);
			if (status != SENSOR_ENABLED)
				cl_data->sensor_sts[i] = SENSOR_DISABLED;
			dev_dbg(&mp2->pdev->dev, "suspend sid 0x%x (%s) status 0x%x\n",
				cl_data->sensor_idx[i], get_sensor_name(cl_data->sensor_idx[i]),
				cl_data->sensor_sts[i]);
		}
	}

	cancel_delayed_work_sync(&cl_data->work_buffer);
	amd_sfh_clear_intr(mp2);
}

int amd_sfh_hid_client_init(struct amd_mp2_dev *privdata)
{
	struct amd_input_data *in_data = &privdata->in_data;
	struct amdtp_cl_data *cl_data = privdata->cl_data;
	struct amd_mp2_ops *mp2_ops = privdata->mp2_ops;
	struct amd_mp2_sensor_info info;
	struct request_list *req_list;
	struct device *dev;
	u32 feature_report_size;
	u32 input_report_size;
	int rc, i, status;
	u8 cl_idx;

	req_list = &cl_data->req_list;
	dev = &privdata->pdev->dev;
	amd_sfh_set_desc_ops(mp2_ops);

	mp2_ops->suspend = amd_sfh_suspend;
	mp2_ops->resume = amd_sfh_resume;

	cl_data->num_hid_devices = amd_mp2_get_sensor_num(privdata, &cl_data->sensor_idx[0]);
	if (cl_data->num_hid_devices == 0)
		return -ENODEV;
	cl_data->is_any_sensor_enabled = false;

	INIT_DELAYED_WORK(&cl_data->work, amd_sfh_work);
	INIT_DELAYED_WORK(&cl_data->work_buffer, amd_sfh_work_buffer);
	INIT_LIST_HEAD(&req_list->list);
	cl_data->in_data = in_data;

	for (i = 0; i < cl_data->num_hid_devices; i++) {
		in_data->sensor_virt_addr[i] = dma_alloc_coherent(dev, sizeof(int) * 8,
								  &cl_data->sensor_dma_addr[i],
								  GFP_KERNEL);
		if (!in_data->sensor_virt_addr[i]) {
			rc = -ENOMEM;
			goto cleanup;
		}
		cl_data->sensor_sts[i] = SENSOR_DISABLED;
		cl_data->sensor_requested_cnt[i] = 0;
		cl_data->cur_hid_dev = i;
		cl_idx = cl_data->sensor_idx[i];
		cl_data->report_descr_sz[i] = mp2_ops->get_desc_sz(cl_idx, descr_size);
		if (!cl_data->report_descr_sz[i]) {
			rc = -EINVAL;
			goto cleanup;
		}
		feature_report_size = mp2_ops->get_desc_sz(cl_idx, feature_size);
		if (!feature_report_size) {
			rc = -EINVAL;
			goto cleanup;
		}
		input_report_size =  mp2_ops->get_desc_sz(cl_idx, input_size);
		if (!input_report_size) {
			rc = -EINVAL;
			goto cleanup;
		}
		cl_data->feature_report[i] = devm_kzalloc(dev, feature_report_size, GFP_KERNEL);
		if (!cl_data->feature_report[i]) {
			rc = -ENOMEM;
			goto cleanup;
		}
		in_data->input_report[i] = devm_kzalloc(dev, input_report_size, GFP_KERNEL);
		if (!in_data->input_report[i]) {
			rc = -ENOMEM;
			goto cleanup;
		}
		info.period = AMD_SFH_IDLE_LOOP;
		info.sensor_idx = cl_idx;
		info.dma_address = cl_data->sensor_dma_addr[i];

		cl_data->report_descr[i] =
			devm_kzalloc(dev, cl_data->report_descr_sz[i], GFP_KERNEL);
		if (!cl_data->report_descr[i]) {
			rc = -ENOMEM;
			goto cleanup;
		}
		rc = mp2_ops->get_rep_desc(cl_idx, cl_data->report_descr[i]);
		if (rc)
			goto cleanup;
		mp2_ops->start(privdata, info);
		status = amd_sfh_wait_for_response
				(privdata, cl_data->sensor_idx[i], SENSOR_ENABLED);
		if (status == SENSOR_ENABLED) {
			cl_data->is_any_sensor_enabled = true;
			cl_data->sensor_sts[i] = SENSOR_ENABLED;
			rc = amdtp_hid_probe(cl_data->cur_hid_dev, cl_data);
			if (rc) {
				mp2_ops->stop(privdata, cl_data->sensor_idx[i]);
				status = amd_sfh_wait_for_response
					(privdata, cl_data->sensor_idx[i], SENSOR_DISABLED);
				if (status != SENSOR_ENABLED)
					cl_data->sensor_sts[i] = SENSOR_DISABLED;
				dev_dbg(dev, "sid 0x%x (%s) status 0x%x\n",
					cl_data->sensor_idx[i],
					get_sensor_name(cl_data->sensor_idx[i]),
					cl_data->sensor_sts[i]);
				goto cleanup;
			}
		} else {
			cl_data->sensor_sts[i] = SENSOR_DISABLED;
			dev_dbg(dev, "sid 0x%x (%s) status 0x%x\n",
				cl_data->sensor_idx[i],
				get_sensor_name(cl_data->sensor_idx[i]),
				cl_data->sensor_sts[i]);
		}
		dev_dbg(dev, "sid 0x%x (%s) status 0x%x\n",
			cl_data->sensor_idx[i], get_sensor_name(cl_data->sensor_idx[i]),
			cl_data->sensor_sts[i]);
	}
	if (!cl_data->is_any_sensor_enabled ||
	   (mp2_ops->discovery_status && mp2_ops->discovery_status(privdata) == 0)) {
		amd_sfh_hid_client_deinit(privdata);
		for (i = 0; i < cl_data->num_hid_devices; i++) {
			devm_kfree(dev, cl_data->feature_report[i]);
			devm_kfree(dev, in_data->input_report[i]);
			devm_kfree(dev, cl_data->report_descr[i]);
		}
		dev_warn(dev, "Failed to discover, sensors not enabled is %d\n", cl_data->is_any_sensor_enabled);
		return -EOPNOTSUPP;
	}
	schedule_delayed_work(&cl_data->work_buffer, msecs_to_jiffies(AMD_SFH_IDLE_LOOP));
	return 0;

cleanup:
	for (i = 0; i < cl_data->num_hid_devices; i++) {
		if (in_data->sensor_virt_addr[i]) {
			dma_free_coherent(&privdata->pdev->dev, 8 * sizeof(int),
					  in_data->sensor_virt_addr[i],
					  cl_data->sensor_dma_addr[i]);
		}
		devm_kfree(dev, cl_data->feature_report[i]);
		devm_kfree(dev, in_data->input_report[i]);
		devm_kfree(dev, cl_data->report_descr[i]);
	}
	return rc;
}

int amd_sfh_hid_client_deinit(struct amd_mp2_dev *privdata)
{
	struct amdtp_cl_data *cl_data = privdata->cl_data;
	struct amd_input_data *in_data = cl_data->in_data;
	int i, status;

	for (i = 0; i < cl_data->num_hid_devices; i++) {
		if (cl_data->sensor_sts[i] == SENSOR_ENABLED) {
			privdata->mp2_ops->stop(privdata, cl_data->sensor_idx[i]);
			status = amd_sfh_wait_for_response
					(privdata, cl_data->sensor_idx[i], SENSOR_DISABLED);
			if (status != SENSOR_ENABLED)
				cl_data->sensor_sts[i] = SENSOR_DISABLED;
			dev_dbg(&privdata->pdev->dev, "stopping sid 0x%x (%s) status 0x%x\n",
				cl_data->sensor_idx[i], get_sensor_name(cl_data->sensor_idx[i]),
				cl_data->sensor_sts[i]);
		}
	}

	cancel_delayed_work_sync(&cl_data->work);
	cancel_delayed_work_sync(&cl_data->work_buffer);
	amdtp_hid_remove(cl_data);

	for (i = 0; i < cl_data->num_hid_devices; i++) {
		if (in_data->sensor_virt_addr[i]) {
			dma_free_coherent(&privdata->pdev->dev, 8 * sizeof(int),
					  in_data->sensor_virt_addr[i],
					  cl_data->sensor_dma_addr[i]);
		}
	}
	return 0;
}
Commit	Line	Data
4b2c53d9 SS	1	// SPDX-License-Identifier: GPL-2.0-or-later
	2	/*
	3	* AMD SFH Client Layer
f75203cd	4	* Copyright 2020-2021 Advanced Micro Devices, Inc.
4b2c53d9 SS	5	* Authors: Nehal Bakulchandra Shah <Nehal-Bakulchandra.Shah@amd.com>
4b2c53d9 SS	6	* Sandeep Singh <Sandeep.singh@amd.com>
f75203cd	7	* Basavaraj Natikar <Basavaraj.Natikar@amd.com>
4b2c53d9 SS	8	*/
	9
	10	#include <linux/dma-mapping.h>
	11	#include <linux/hid.h>
	12	#include <linux/list.h>
	13	#include <linux/slab.h>
	14	#include <linux/workqueue.h>
	15	#include <linux/errno.h>
	16
	17	#include "hid_descriptor/amd_sfh_hid_desc.h"
	18	#include "amd_sfh_pcie.h"
	19	#include "amd_sfh_hid.h"
	20
4b2c53d9 SS	21	void amd_sfh_set_report(struct hid_device *hid, int report_id,
	22	int report_type)
	23	{
	24	struct amdtp_hid_data *hid_data = hid->driver_data;
	25	struct amdtp_cl_data *cli_data = hid_data->cli_data;
	26	int i;
	27
	28	for (i = 0; i < cli_data->num_hid_devices; i++) {
	29	if (cli_data->hid_sensor_hubs[i] == hid) {
	30	cli_data->cur_hid_dev = i;
	31	break;
	32	}
	33	}
	34	amdtp_hid_wakeup(hid);
	35	}
	36
	37	int amd_sfh_get_report(struct hid_device *hid, int report_id, int report_type)
	38	{
	39	struct amdtp_hid_data *hid_data = hid->driver_data;
	40	struct amdtp_cl_data *cli_data = hid_data->cli_data;
c092e274	41	struct request_list *req_list = &cli_data->req_list;
4b2c53d9 SS	42	int i;
	43
	44	for (i = 0; i < cli_data->num_hid_devices; i++) {
	45	if (cli_data->hid_sensor_hubs[i] == hid) {
	46	struct request_list new = kzalloc(sizeof(new), GFP_KERNEL);
	47
	48	if (!new)
	49	return -ENOMEM;
	50
	51	new->current_index = i;
	52	new->sensor_idx = cli_data->sensor_idx[i];
	53	new->hid = hid;
	54	new->report_type = report_type;
	55	new->report_id = report_id;
	56	cli_data->report_id[i] = report_id;
	57	cli_data->request_done[i] = false;
c092e274	58	list_add(&new->list, &req_list->list);
4b2c53d9 SS	59	break;
	60	}
	61	}
	62	schedule_delayed_work(&cli_data->work, 0);
	63	return 0;
	64	}
	65
e7f535ea	66	void amd_sfh_work(struct work_struct *work)
4b2c53d9 SS	67	{
4b2c53d9 SS	68	struct amdtp_cl_data *cli_data = container_of(work, struct amdtp_cl_data, work.work);
c092e274	69	struct request_list *req_list = &cli_data->req_list;
0aad9c95	70	struct amd_input_data *in_data = cli_data->in_data;
4b2c53d9 SS	71	struct request_list *req_node;
4b2c53d9 SS	72	u8 current_index, sensor_index;
786aa1b9 BN	73	struct amd_mp2_ops *mp2_ops;
786aa1b9 BN	74	struct amd_mp2_dev *mp2;
4b2c53d9 SS	75	u8 report_id, node_type;
	76	u8 report_size = 0;
	77
c092e274	78	req_node = list_last_entry(&req_list->list, struct request_list, list);
4b2c53d9 SS	79	list_del(&req_node->list);
	80	current_index = req_node->current_index;
	81	sensor_index = req_node->sensor_idx;
	82	report_id = req_node->report_id;
	83	node_type = req_node->report_type;
5ad755fd	84	kfree(req_node);
4b2c53d9	85
786aa1b9 BN	86	mp2 = container_of(in_data, struct amd_mp2_dev, in_data);
786aa1b9 BN	87	mp2_ops = mp2->mp2_ops;
4b2c53d9	88	if (node_type == HID_FEATURE_REPORT) {
786aa1b9 BN	89	report_size = mp2_ops->get_feat_rep(sensor_index, report_id,
786aa1b9 BN	90	cli_data->feature_report[current_index]);
4b2c53d9 SS	91	if (report_size)
	92	hid_input_report(cli_data->hid_sensor_hubs[current_index],
	93	cli_data->report_type[current_index],
	94	cli_data->feature_report[current_index], report_size, 0);
	95	else
	96	pr_err("AMDSFH: Invalid report size\n");
	97
	98	} else if (node_type == HID_INPUT_REPORT) {
786aa1b9	99	report_size = mp2_ops->get_in_rep(current_index, sensor_index, report_id, in_data);
4b2c53d9 SS	100	if (report_size)
	101	hid_input_report(cli_data->hid_sensor_hubs[current_index],
	102	cli_data->report_type[current_index],
0aad9c95	103	in_data->input_report[current_index], report_size, 0);
4b2c53d9 SS	104	else
	105	pr_err("AMDSFH: Invalid report size\n");
	106	}
	107	cli_data->cur_hid_dev = current_index;
	108	cli_data->sensor_requested_cnt[current_index] = 0;
	109	amdtp_hid_wakeup(cli_data->hid_sensor_hubs[current_index]);
	110	}
	111
e7f535ea	112	void amd_sfh_work_buffer(struct work_struct *work)
4b2c53d9 SS	113	{
4b2c53d9 SS	114	struct amdtp_cl_data *cli_data = container_of(work, struct amdtp_cl_data, work_buffer.work);
0aad9c95	115	struct amd_input_data *in_data = cli_data->in_data;
786aa1b9	116	struct amd_mp2_dev *mp2;
4b2c53d9 SS	117	u8 report_size;
	118	int i;
	119
	120	for (i = 0; i < cli_data->num_hid_devices; i++) {
173709f5	121	if (cli_data->sensor_sts[i] == SENSOR_ENABLED) {
786aa1b9 BN	122	mp2 = container_of(in_data, struct amd_mp2_dev, in_data);
	123	report_size = mp2->mp2_ops->get_in_rep(i, cli_data->sensor_idx[i],
	124	cli_data->report_id[i], in_data);
173709f5 BN	125	hid_input_report(cli_data->hid_sensor_hubs[i], HID_INPUT_REPORT,
	126	in_data->input_report[i], report_size, 0);
	127	}
4b2c53d9 SS	128	}
	129	schedule_delayed_work(&cli_data->work_buffer, msecs_to_jiffies(AMD_SFH_IDLE_LOOP));
	130	}
	131
87cb7952	132	static u32 amd_sfh_wait_for_response(struct amd_mp2_dev *mp2, u8 sid, u32 sensor_sts)
173709f5 BN	133	{
	134	if (mp2->mp2_ops->response)
	135	sensor_sts = mp2->mp2_ops->response(mp2, sid, sensor_sts);
	136
	137	return sensor_sts;
	138	}
	139
87cb7952	140	static const char *get_sensor_name(int idx)
696455e9 BN	141	{
	142	switch (idx) {
	143	case accel_idx:
	144	return "accelerometer";
	145	case gyro_idx:
	146	return "gyroscope";
	147	case mag_idx:
	148	return "magnetometer";
	149	case als_idx:
	150	return "ALS";
	151	case HPD_IDX:
	152	return "HPD";
	153	default:
	154	return "unknown sensor type";
	155	}
	156	}
	157
9acadc72 BN	158	static void amd_sfh_resume(struct amd_mp2_dev *mp2)
	159	{
	160	struct amdtp_cl_data *cl_data = mp2->cl_data;
	161	struct amd_mp2_sensor_info info;
	162	int i, status;
	163
	164	for (i = 0; i < cl_data->num_hid_devices; i++) {
	165	if (cl_data->sensor_sts[i] == SENSOR_DISABLED) {
	166	info.period = AMD_SFH_IDLE_LOOP;
	167	info.sensor_idx = cl_data->sensor_idx[i];
	168	info.dma_address = cl_data->sensor_dma_addr[i];
	169	mp2->mp2_ops->start(mp2, info);
	170	status = amd_sfh_wait_for_response
	171	(mp2, cl_data->sensor_idx[i], SENSOR_ENABLED);
	172	if (status == SENSOR_ENABLED)
	173	cl_data->sensor_sts[i] = SENSOR_ENABLED;
	174	dev_dbg(&mp2->pdev->dev, "resume sid 0x%x (%s) status 0x%x\n",
	175	cl_data->sensor_idx[i], get_sensor_name(cl_data->sensor_idx[i]),
	176	cl_data->sensor_sts[i]);
	177	}
	178	}
	179
	180	schedule_delayed_work(&cl_data->work_buffer, msecs_to_jiffies(AMD_SFH_IDLE_LOOP));
014730c4	181	amd_sfh_clear_intr(mp2);
9acadc72 BN	182	}
	183
	184	static void amd_sfh_suspend(struct amd_mp2_dev *mp2)
	185	{
	186	struct amdtp_cl_data *cl_data = mp2->cl_data;
	187	int i, status;
	188
	189	for (i = 0; i < cl_data->num_hid_devices; i++) {
	190	if (cl_data->sensor_idx[i] != HPD_IDX &&
	191	cl_data->sensor_sts[i] == SENSOR_ENABLED) {
	192	mp2->mp2_ops->stop(mp2, cl_data->sensor_idx[i]);
	193	status = amd_sfh_wait_for_response
	194	(mp2, cl_data->sensor_idx[i], SENSOR_DISABLED);
	195	if (status != SENSOR_ENABLED)
	196	cl_data->sensor_sts[i] = SENSOR_DISABLED;
	197	dev_dbg(&mp2->pdev->dev, "suspend sid 0x%x (%s) status 0x%x\n",
	198	cl_data->sensor_idx[i], get_sensor_name(cl_data->sensor_idx[i]),
	199	cl_data->sensor_sts[i]);
	200	}
	201	}
	202
	203	cancel_delayed_work_sync(&cl_data->work_buffer);
014730c4	204	amd_sfh_clear_intr(mp2);
9acadc72 BN	205	}
9acadc72 BN	206
4b2c53d9 SS	207	int amd_sfh_hid_client_init(struct amd_mp2_dev *privdata)
4b2c53d9 SS	208	{
0aad9c95	209	struct amd_input_data *in_data = &privdata->in_data;
4b2c53d9	210	struct amdtp_cl_data *cl_data = privdata->cl_data;
786aa1b9	211	struct amd_mp2_ops *mp2_ops = privdata->mp2_ops;
4b2c53d9	212	struct amd_mp2_sensor_info info;
c092e274	213	struct request_list *req_list;
4b2c53d9 SS	214	struct device *dev;
	215	u32 feature_report_size;
	216	u32 input_report_size;
173709f5	217	int rc, i, status;
4b2c53d9	218	u8 cl_idx;
4b2c53d9	219
c092e274	220	req_list = &cl_data->req_list;
4b2c53d9	221	dev = &privdata->pdev->dev;
786aa1b9	222	amd_sfh_set_desc_ops(mp2_ops);
4b2c53d9	223
9acadc72 BN	224	mp2_ops->suspend = amd_sfh_suspend;
	225	mp2_ops->resume = amd_sfh_resume;
	226
4b2c53d9	227	cl_data->num_hid_devices = amd_mp2_get_sensor_num(privdata, &cl_data->sensor_idx[0]);
5d4d0f15 BN	228	if (cl_data->num_hid_devices == 0)
5d4d0f15 BN	229	return -ENODEV;
7bcfdab3	230	cl_data->is_any_sensor_enabled = false;
4b2c53d9 SS	231
	232	INIT_DELAYED_WORK(&cl_data->work, amd_sfh_work);
	233	INIT_DELAYED_WORK(&cl_data->work_buffer, amd_sfh_work_buffer);
c092e274	234	INIT_LIST_HEAD(&req_list->list);
0aad9c95	235	cl_data->in_data = in_data;
4b2c53d9 SS	236
4b2c53d9 SS	237	for (i = 0; i < cl_data->num_hid_devices; i++) {
0aad9c95	238	in_data->sensor_virt_addr[i] = dma_alloc_coherent(dev, sizeof(int) * 8,
de30491e	239	&cl_data->sensor_dma_addr[i],
4b2c53d9	240	GFP_KERNEL);
53ffa6a9 JJ	241	if (!in_data->sensor_virt_addr[i]) {
	242	rc = -ENOMEM;
	243	goto cleanup;
	244	}
173709f5	245	cl_data->sensor_sts[i] = SENSOR_DISABLED;
4b2c53d9 SS	246	cl_data->sensor_requested_cnt[i] = 0;
	247	cl_data->cur_hid_dev = i;
	248	cl_idx = cl_data->sensor_idx[i];
786aa1b9	249	cl_data->report_descr_sz[i] = mp2_ops->get_desc_sz(cl_idx, descr_size);
4b2c53d9 SS	250	if (!cl_data->report_descr_sz[i]) {
	251	rc = -EINVAL;
	252	goto cleanup;
	253	}
786aa1b9	254	feature_report_size = mp2_ops->get_desc_sz(cl_idx, feature_size);
4b2c53d9 SS	255	if (!feature_report_size) {
	256	rc = -EINVAL;
	257	goto cleanup;
	258	}
786aa1b9	259	input_report_size = mp2_ops->get_desc_sz(cl_idx, input_size);
4b2c53d9 SS	260	if (!input_report_size) {
	261	rc = -EINVAL;
	262	goto cleanup;
	263	}
e3d6a599	264	cl_data->feature_report[i] = devm_kzalloc(dev, feature_report_size, GFP_KERNEL);
4b2c53d9 SS	265	if (!cl_data->feature_report[i]) {
	266	rc = -ENOMEM;
	267	goto cleanup;
	268	}
0aad9c95 BN	269	in_data->input_report[i] = devm_kzalloc(dev, input_report_size, GFP_KERNEL);
0aad9c95 BN	270	if (!in_data->input_report[i]) {
4b2c53d9 SS	271	rc = -ENOMEM;
	272	goto cleanup;
	273	}
3978f548	274	info.period = AMD_SFH_IDLE_LOOP;
4b2c53d9	275	info.sensor_idx = cl_idx;
de30491e	276	info.dma_address = cl_data->sensor_dma_addr[i];
4b2c53d9	277
e3d6a599 BN	278	cl_data->report_descr[i] =
e3d6a599 BN	279	devm_kzalloc(dev, cl_data->report_descr_sz[i], GFP_KERNEL);
4b2c53d9 SS	280	if (!cl_data->report_descr[i]) {
	281	rc = -ENOMEM;
	282	goto cleanup;
	283	}
786aa1b9	284	rc = mp2_ops->get_rep_desc(cl_idx, cl_data->report_descr[i]);
4b2c53d9	285	if (rc)
2a33ad4a	286	goto cleanup;
786aa1b9	287	mp2_ops->start(privdata, info);
173709f5 BN	288	status = amd_sfh_wait_for_response
173709f5 BN	289	(privdata, cl_data->sensor_idx[i], SENSOR_ENABLED);
ac15e919	290	if (status == SENSOR_ENABLED) {
7bcfdab3	291	cl_data->is_any_sensor_enabled = true;
173709f5	292	cl_data->sensor_sts[i] = SENSOR_ENABLED;
ac15e919 BN	293	rc = amdtp_hid_probe(cl_data->cur_hid_dev, cl_data);
ac15e919 BN	294	if (rc) {
786aa1b9	295	mp2_ops->stop(privdata, cl_data->sensor_idx[i]);
ac15e919 BN	296	status = amd_sfh_wait_for_response
	297	(privdata, cl_data->sensor_idx[i], SENSOR_DISABLED);
	298	if (status != SENSOR_ENABLED)
	299	cl_data->sensor_sts[i] = SENSOR_DISABLED;
696455e9 BN	300	dev_dbg(dev, "sid 0x%x (%s) status 0x%x\n",
	301	cl_data->sensor_idx[i],
	302	get_sensor_name(cl_data->sensor_idx[i]),
	303	cl_data->sensor_sts[i]);
ac15e919 BN	304	goto cleanup;
ac15e919 BN	305	}
7bcfdab3 ML	306	} else {
	307	cl_data->sensor_sts[i] = SENSOR_DISABLED;
	308	dev_dbg(dev, "sid 0x%x (%s) status 0x%x\n",
	309	cl_data->sensor_idx[i],
	310	get_sensor_name(cl_data->sensor_idx[i]),
	311	cl_data->sensor_sts[i]);
ac15e919	312	}
696455e9 BN	313	dev_dbg(dev, "sid 0x%x (%s) status 0x%x\n",
	314	cl_data->sensor_idx[i], get_sensor_name(cl_data->sensor_idx[i]),
	315	cl_data->sensor_sts[i]);
4b2c53d9	316	}
7bcfdab3 ML	317	if (!cl_data->is_any_sensor_enabled \|\|
7bcfdab3 ML	318	(mp2_ops->discovery_status && mp2_ops->discovery_status(privdata) == 0)) {
b5d7f43e BN	319	amd_sfh_hid_client_deinit(privdata);
	320	for (i = 0; i < cl_data->num_hid_devices; i++) {
	321	devm_kfree(dev, cl_data->feature_report[i]);
	322	devm_kfree(dev, in_data->input_report[i]);
	323	devm_kfree(dev, cl_data->report_descr[i]);
	324	}
7bcfdab3	325	dev_warn(dev, "Failed to discover, sensors not enabled is %d\n", cl_data->is_any_sensor_enabled);
b5d7f43e BN	326	return -EOPNOTSUPP;
b5d7f43e BN	327	}
4b2c53d9 SS	328	schedule_delayed_work(&cl_data->work_buffer, msecs_to_jiffies(AMD_SFH_IDLE_LOOP));
	329	return 0;
	330
	331	cleanup:
	332	for (i = 0; i < cl_data->num_hid_devices; i++) {
0aad9c95	333	if (in_data->sensor_virt_addr[i]) {
4b2c53d9	334	dma_free_coherent(&privdata->pdev->dev, 8 * sizeof(int),
0aad9c95	335	in_data->sensor_virt_addr[i],
de30491e	336	cl_data->sensor_dma_addr[i]);
4b2c53d9	337	}
e3d6a599	338	devm_kfree(dev, cl_data->feature_report[i]);
0aad9c95	339	devm_kfree(dev, in_data->input_report[i]);
e3d6a599	340	devm_kfree(dev, cl_data->report_descr[i]);
4b2c53d9	341	}
4b2c53d9 SS	342	return rc;
	343	}
	344
	345	int amd_sfh_hid_client_deinit(struct amd_mp2_dev *privdata)
	346	{
	347	struct amdtp_cl_data *cl_data = privdata->cl_data;
0aad9c95	348	struct amd_input_data *in_data = cl_data->in_data;
173709f5	349	int i, status;
4b2c53d9	350
173709f5 BN	351	for (i = 0; i < cl_data->num_hid_devices; i++) {
	352	if (cl_data->sensor_sts[i] == SENSOR_ENABLED) {
	353	privdata->mp2_ops->stop(privdata, cl_data->sensor_idx[i]);
	354	status = amd_sfh_wait_for_response
	355	(privdata, cl_data->sensor_idx[i], SENSOR_DISABLED);
	356	if (status != SENSOR_ENABLED)
	357	cl_data->sensor_sts[i] = SENSOR_DISABLED;
696455e9 BN	358	dev_dbg(&privdata->pdev->dev, "stopping sid 0x%x (%s) status 0x%x\n",
	359	cl_data->sensor_idx[i], get_sensor_name(cl_data->sensor_idx[i]),
	360	cl_data->sensor_sts[i]);
173709f5 BN	361	}
173709f5 BN	362	}
4b2c53d9 SS	363
	364	cancel_delayed_work_sync(&cl_data->work);
	365	cancel_delayed_work_sync(&cl_data->work_buffer);
	366	amdtp_hid_remove(cl_data);
	367
	368	for (i = 0; i < cl_data->num_hid_devices; i++) {
0aad9c95	369	if (in_data->sensor_virt_addr[i]) {
4b2c53d9	370	dma_free_coherent(&privdata->pdev->dev, 8 * sizeof(int),
0aad9c95	371	in_data->sensor_virt_addr[i],
de30491e	372	cl_data->sensor_dma_addr[i]);
4b2c53d9 SS	373	}
4b2c53d9 SS	374	}
4b2c53d9 SS	375	return 0;
4b2c53d9 SS	376	}