377 lines
12 KiB
C
377 lines
12 KiB
C
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// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* AMD SFH Client Layer
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* Copyright 2020-2021 Advanced Micro Devices, Inc.
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* Authors: Nehal Bakulchandra Shah <Nehal-Bakulchandra.Shah@amd.com>
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* Sandeep Singh <Sandeep.singh@amd.com>
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* Basavaraj Natikar <Basavaraj.Natikar@amd.com>
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*/
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#include <linux/dma-mapping.h>
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#include <linux/hid.h>
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#include <linux/list.h>
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#include <linux/slab.h>
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#include <linux/workqueue.h>
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#include <linux/errno.h>
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#include "hid_descriptor/amd_sfh_hid_desc.h"
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#include "amd_sfh_pcie.h"
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#include "amd_sfh_hid.h"
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void amd_sfh_set_report(struct hid_device *hid, int report_id,
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int report_type)
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{
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struct amdtp_hid_data *hid_data = hid->driver_data;
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struct amdtp_cl_data *cli_data = hid_data->cli_data;
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int i;
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for (i = 0; i < cli_data->num_hid_devices; i++) {
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if (cli_data->hid_sensor_hubs[i] == hid) {
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cli_data->cur_hid_dev = i;
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break;
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}
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}
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amdtp_hid_wakeup(hid);
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}
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int amd_sfh_get_report(struct hid_device *hid, int report_id, int report_type)
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{
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struct amdtp_hid_data *hid_data = hid->driver_data;
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struct amdtp_cl_data *cli_data = hid_data->cli_data;
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struct request_list *req_list = &cli_data->req_list;
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int i;
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for (i = 0; i < cli_data->num_hid_devices; i++) {
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if (cli_data->hid_sensor_hubs[i] == hid) {
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struct request_list *new = kzalloc(sizeof(*new), GFP_KERNEL);
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if (!new)
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return -ENOMEM;
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new->current_index = i;
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new->sensor_idx = cli_data->sensor_idx[i];
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new->hid = hid;
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new->report_type = report_type;
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new->report_id = report_id;
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cli_data->report_id[i] = report_id;
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cli_data->request_done[i] = false;
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list_add(&new->list, &req_list->list);
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break;
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}
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}
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schedule_delayed_work(&cli_data->work, 0);
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return 0;
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}
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void amd_sfh_work(struct work_struct *work)
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{
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struct amdtp_cl_data *cli_data = container_of(work, struct amdtp_cl_data, work.work);
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struct request_list *req_list = &cli_data->req_list;
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struct amd_input_data *in_data = cli_data->in_data;
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struct request_list *req_node;
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u8 current_index, sensor_index;
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struct amd_mp2_ops *mp2_ops;
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struct amd_mp2_dev *mp2;
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u8 report_id, node_type;
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u8 report_size = 0;
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req_node = list_last_entry(&req_list->list, struct request_list, list);
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list_del(&req_node->list);
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current_index = req_node->current_index;
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sensor_index = req_node->sensor_idx;
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report_id = req_node->report_id;
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node_type = req_node->report_type;
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kfree(req_node);
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mp2 = container_of(in_data, struct amd_mp2_dev, in_data);
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mp2_ops = mp2->mp2_ops;
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if (node_type == HID_FEATURE_REPORT) {
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report_size = mp2_ops->get_feat_rep(sensor_index, report_id,
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cli_data->feature_report[current_index]);
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if (report_size)
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hid_input_report(cli_data->hid_sensor_hubs[current_index],
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cli_data->report_type[current_index],
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cli_data->feature_report[current_index], report_size, 0);
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else
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pr_err("AMDSFH: Invalid report size\n");
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} else if (node_type == HID_INPUT_REPORT) {
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report_size = mp2_ops->get_in_rep(current_index, sensor_index, report_id, in_data);
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if (report_size)
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hid_input_report(cli_data->hid_sensor_hubs[current_index],
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cli_data->report_type[current_index],
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in_data->input_report[current_index], report_size, 0);
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else
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pr_err("AMDSFH: Invalid report size\n");
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}
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cli_data->cur_hid_dev = current_index;
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cli_data->sensor_requested_cnt[current_index] = 0;
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amdtp_hid_wakeup(cli_data->hid_sensor_hubs[current_index]);
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}
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void amd_sfh_work_buffer(struct work_struct *work)
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{
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struct amdtp_cl_data *cli_data = container_of(work, struct amdtp_cl_data, work_buffer.work);
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struct amd_input_data *in_data = cli_data->in_data;
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struct amd_mp2_dev *mp2;
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u8 report_size;
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int i;
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for (i = 0; i < cli_data->num_hid_devices; i++) {
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if (cli_data->sensor_sts[i] == SENSOR_ENABLED) {
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mp2 = container_of(in_data, struct amd_mp2_dev, in_data);
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report_size = mp2->mp2_ops->get_in_rep(i, cli_data->sensor_idx[i],
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cli_data->report_id[i], in_data);
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hid_input_report(cli_data->hid_sensor_hubs[i], HID_INPUT_REPORT,
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in_data->input_report[i], report_size, 0);
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}
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}
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schedule_delayed_work(&cli_data->work_buffer, msecs_to_jiffies(AMD_SFH_IDLE_LOOP));
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}
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static u32 amd_sfh_wait_for_response(struct amd_mp2_dev *mp2, u8 sid, u32 sensor_sts)
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{
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if (mp2->mp2_ops->response)
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sensor_sts = mp2->mp2_ops->response(mp2, sid, sensor_sts);
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return sensor_sts;
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}
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static const char *get_sensor_name(int idx)
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{
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switch (idx) {
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case accel_idx:
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return "accelerometer";
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case gyro_idx:
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return "gyroscope";
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case mag_idx:
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return "magnetometer";
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case als_idx:
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return "ALS";
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case HPD_IDX:
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return "HPD";
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default:
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return "unknown sensor type";
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}
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}
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static void amd_sfh_resume(struct amd_mp2_dev *mp2)
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{
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struct amdtp_cl_data *cl_data = mp2->cl_data;
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struct amd_mp2_sensor_info info;
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int i, status;
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for (i = 0; i < cl_data->num_hid_devices; i++) {
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if (cl_data->sensor_sts[i] == SENSOR_DISABLED) {
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info.period = AMD_SFH_IDLE_LOOP;
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info.sensor_idx = cl_data->sensor_idx[i];
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info.dma_address = cl_data->sensor_dma_addr[i];
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mp2->mp2_ops->start(mp2, info);
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status = amd_sfh_wait_for_response
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(mp2, cl_data->sensor_idx[i], SENSOR_ENABLED);
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if (status == SENSOR_ENABLED)
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cl_data->sensor_sts[i] = SENSOR_ENABLED;
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dev_dbg(&mp2->pdev->dev, "resume sid 0x%x (%s) status 0x%x\n",
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cl_data->sensor_idx[i], get_sensor_name(cl_data->sensor_idx[i]),
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cl_data->sensor_sts[i]);
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}
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}
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schedule_delayed_work(&cl_data->work_buffer, msecs_to_jiffies(AMD_SFH_IDLE_LOOP));
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amd_sfh_clear_intr(mp2);
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}
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static void amd_sfh_suspend(struct amd_mp2_dev *mp2)
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{
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struct amdtp_cl_data *cl_data = mp2->cl_data;
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int i, status;
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for (i = 0; i < cl_data->num_hid_devices; i++) {
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if (cl_data->sensor_idx[i] != HPD_IDX &&
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cl_data->sensor_sts[i] == SENSOR_ENABLED) {
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mp2->mp2_ops->stop(mp2, cl_data->sensor_idx[i]);
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status = amd_sfh_wait_for_response
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(mp2, cl_data->sensor_idx[i], SENSOR_DISABLED);
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if (status != SENSOR_ENABLED)
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cl_data->sensor_sts[i] = SENSOR_DISABLED;
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dev_dbg(&mp2->pdev->dev, "suspend sid 0x%x (%s) status 0x%x\n",
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cl_data->sensor_idx[i], get_sensor_name(cl_data->sensor_idx[i]),
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cl_data->sensor_sts[i]);
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}
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}
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cancel_delayed_work_sync(&cl_data->work_buffer);
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amd_sfh_clear_intr(mp2);
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}
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int amd_sfh_hid_client_init(struct amd_mp2_dev *privdata)
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{
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struct amd_input_data *in_data = &privdata->in_data;
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struct amdtp_cl_data *cl_data = privdata->cl_data;
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struct amd_mp2_ops *mp2_ops = privdata->mp2_ops;
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struct amd_mp2_sensor_info info;
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struct request_list *req_list;
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struct device *dev;
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u32 feature_report_size;
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u32 input_report_size;
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int rc, i, status;
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u8 cl_idx;
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req_list = &cl_data->req_list;
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dev = &privdata->pdev->dev;
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amd_sfh_set_desc_ops(mp2_ops);
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mp2_ops->suspend = amd_sfh_suspend;
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mp2_ops->resume = amd_sfh_resume;
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cl_data->num_hid_devices = amd_mp2_get_sensor_num(privdata, &cl_data->sensor_idx[0]);
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if (cl_data->num_hid_devices == 0)
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return -ENODEV;
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cl_data->is_any_sensor_enabled = false;
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INIT_DELAYED_WORK(&cl_data->work, amd_sfh_work);
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INIT_DELAYED_WORK(&cl_data->work_buffer, amd_sfh_work_buffer);
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INIT_LIST_HEAD(&req_list->list);
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cl_data->in_data = in_data;
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for (i = 0; i < cl_data->num_hid_devices; i++) {
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in_data->sensor_virt_addr[i] = dma_alloc_coherent(dev, sizeof(int) * 8,
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&cl_data->sensor_dma_addr[i],
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GFP_KERNEL);
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if (!in_data->sensor_virt_addr[i]) {
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rc = -ENOMEM;
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goto cleanup;
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}
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cl_data->sensor_sts[i] = SENSOR_DISABLED;
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cl_data->sensor_requested_cnt[i] = 0;
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cl_data->cur_hid_dev = i;
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cl_idx = cl_data->sensor_idx[i];
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cl_data->report_descr_sz[i] = mp2_ops->get_desc_sz(cl_idx, descr_size);
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if (!cl_data->report_descr_sz[i]) {
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rc = -EINVAL;
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goto cleanup;
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}
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feature_report_size = mp2_ops->get_desc_sz(cl_idx, feature_size);
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if (!feature_report_size) {
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rc = -EINVAL;
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goto cleanup;
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}
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input_report_size = mp2_ops->get_desc_sz(cl_idx, input_size);
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if (!input_report_size) {
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rc = -EINVAL;
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goto cleanup;
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}
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cl_data->feature_report[i] = devm_kzalloc(dev, feature_report_size, GFP_KERNEL);
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if (!cl_data->feature_report[i]) {
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rc = -ENOMEM;
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goto cleanup;
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}
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in_data->input_report[i] = devm_kzalloc(dev, input_report_size, GFP_KERNEL);
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if (!in_data->input_report[i]) {
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rc = -ENOMEM;
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goto cleanup;
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}
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info.period = AMD_SFH_IDLE_LOOP;
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info.sensor_idx = cl_idx;
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info.dma_address = cl_data->sensor_dma_addr[i];
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cl_data->report_descr[i] =
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devm_kzalloc(dev, cl_data->report_descr_sz[i], GFP_KERNEL);
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if (!cl_data->report_descr[i]) {
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rc = -ENOMEM;
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goto cleanup;
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}
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rc = mp2_ops->get_rep_desc(cl_idx, cl_data->report_descr[i]);
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if (rc)
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goto cleanup;
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mp2_ops->start(privdata, info);
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status = amd_sfh_wait_for_response
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(privdata, cl_data->sensor_idx[i], SENSOR_ENABLED);
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if (status == SENSOR_ENABLED) {
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cl_data->is_any_sensor_enabled = true;
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cl_data->sensor_sts[i] = SENSOR_ENABLED;
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rc = amdtp_hid_probe(cl_data->cur_hid_dev, cl_data);
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if (rc) {
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mp2_ops->stop(privdata, cl_data->sensor_idx[i]);
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status = amd_sfh_wait_for_response
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(privdata, cl_data->sensor_idx[i], SENSOR_DISABLED);
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if (status != SENSOR_ENABLED)
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cl_data->sensor_sts[i] = SENSOR_DISABLED;
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dev_dbg(dev, "sid 0x%x (%s) status 0x%x\n",
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cl_data->sensor_idx[i],
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get_sensor_name(cl_data->sensor_idx[i]),
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cl_data->sensor_sts[i]);
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goto cleanup;
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}
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} else {
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cl_data->sensor_sts[i] = SENSOR_DISABLED;
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dev_dbg(dev, "sid 0x%x (%s) status 0x%x\n",
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cl_data->sensor_idx[i],
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get_sensor_name(cl_data->sensor_idx[i]),
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cl_data->sensor_sts[i]);
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}
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dev_dbg(dev, "sid 0x%x (%s) status 0x%x\n",
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cl_data->sensor_idx[i], get_sensor_name(cl_data->sensor_idx[i]),
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cl_data->sensor_sts[i]);
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}
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if (!cl_data->is_any_sensor_enabled ||
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(mp2_ops->discovery_status && mp2_ops->discovery_status(privdata) == 0)) {
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amd_sfh_hid_client_deinit(privdata);
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for (i = 0; i < cl_data->num_hid_devices; i++) {
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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;
|
||
|
|
}
|