// SPDX-License-Identifier: GPL-2.0-or-later /* * AMD SFH Client Layer * Copyright 2020-2021 Advanced Micro Devices, Inc. * Authors: Nehal Bakulchandra Shah * Sandeep Singh * Basavaraj Natikar */ #include #include #include #include #include #include #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; struct amd_input_data *in_data = cli_data->in_data; struct amd_mp2_dev *mp2; int i; mp2 = container_of(in_data, struct amd_mp2_dev, in_data); guard(mutex)(&mp2->lock); 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; mp2 = container_of(in_data, struct amd_mp2_dev, in_data); guard(mutex)(&mp2->lock); 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_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]); if (!list_empty(&req_list->list)) schedule_delayed_work(&cli_data->work, 0); } 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; mp2 = container_of(in_data, struct amd_mp2_dev, in_data); guard(mutex)(&mp2->lock); for (i = 0; i < cli_data->num_hid_devices; i++) { if (cli_data->sensor_sts[i] == SENSOR_ENABLED) { 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 op_idx: return "operating-mode"; case als_idx: case ACS_IDX: /* ambient color sensor */ 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; 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] = dmam_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; } if (cl_data->sensor_idx[i] == op_idx) { info.period = AMD_SFH_IDLE_LOOP; info.sensor_idx = cl_data->sensor_idx[i]; info.dma_address = cl_data->sensor_dma_addr[i]; mp2_ops->start(privdata, info); cl_data->sensor_sts[i] = amd_sfh_wait_for_response(privdata, cl_data->sensor_idx[i], SENSOR_ENABLED); if (cl_data->sensor_sts[i] == SENSOR_ENABLED) cl_data->is_any_sensor_enabled = true; continue; } 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); cl_data->sensor_sts[i] = amd_sfh_wait_for_response (privdata, cl_data->sensor_idx[i], SENSOR_ENABLED); if (cl_data->sensor_sts[i] == SENSOR_ENABLED) cl_data->is_any_sensor_enabled = true; } if (!cl_data->is_any_sensor_enabled || (mp2_ops->discovery_status && mp2_ops->discovery_status(privdata) == 0)) { dev_warn(dev, "Failed to discover, sensors not enabled is %d\n", cl_data->is_any_sensor_enabled); rc = -EOPNOTSUPP; goto cleanup; } for (i = 0; i < cl_data->num_hid_devices; i++) { cl_data->cur_hid_dev = i; if (cl_data->sensor_idx[i] == op_idx) { 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]); continue; } if (cl_data->sensor_sts[i] == SENSOR_ENABLED) { rc = amdtp_hid_probe(i, cl_data); if (rc) 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]); } schedule_delayed_work(&cl_data->work_buffer, msecs_to_jiffies(AMD_SFH_IDLE_LOOP)); return 0; cleanup: 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]); } return rc; } int amd_sfh_hid_client_deinit(struct amd_mp2_dev *privdata) { struct amdtp_cl_data *cl_data = privdata->cl_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); return 0; }