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276 lines
8.2 KiB
276 lines
8.2 KiB
// 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 Advanced Micro Devices, Inc. |
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* Authors: Nehal Bakulchandra Shah <[email protected]> |
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* Sandeep Singh <[email protected]> |
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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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struct request_list { |
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struct hid_device *hid; |
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struct list_head list; |
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u8 report_id; |
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u8 sensor_idx; |
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u8 report_type; |
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u8 current_index; |
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}; |
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static struct request_list req_list; |
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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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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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static 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 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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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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if (node_type == HID_FEATURE_REPORT) { |
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report_size = get_feature_report(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 = get_input_report(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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static 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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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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report_size = get_input_report |
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(i, cli_data->sensor_idx[i], 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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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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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_sensor_info info; |
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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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dev = &privdata->pdev->dev; |
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cl_data->num_hid_devices = amd_mp2_get_sensor_num(privdata, &cl_data->sensor_idx[0]); |
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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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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] = get_descr_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 = get_descr_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 = get_descr_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 = get_report_descriptor(cl_idx, cl_data->report_descr[i]); |
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if (rc) |
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return rc; |
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privdata->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->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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privdata->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 status 0x%x\n", |
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cl_data->sensor_idx[i], cl_data->sensor_sts[i]); |
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goto cleanup; |
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} |
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} |
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dev_dbg(dev, "sid 0x%x status 0x%x\n", |
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cl_data->sensor_idx[i], cl_data->sensor_sts[i]); |
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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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return 0; |
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cleanup: |
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for (i = 0; i < cl_data->num_hid_devices; i++) { |
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if (in_data->sensor_virt_addr[i]) { |
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dma_free_coherent(&privdata->pdev->dev, 8 * sizeof(int), |
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in_data->sensor_virt_addr[i], |
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cl_data->sensor_dma_addr[i]); |
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} |
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devm_kfree(dev, cl_data->feature_report[i]); |
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devm_kfree(dev, in_data->input_report[i]); |
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devm_kfree(dev, cl_data->report_descr[i]); |
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} |
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return rc; |
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} |
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int amd_sfh_hid_client_deinit(struct amd_mp2_dev *privdata) |
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{ |
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struct amdtp_cl_data *cl_data = privdata->cl_data; |
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struct amd_input_data *in_data = cl_data->in_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_sts[i] == SENSOR_ENABLED) { |
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privdata->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(&privdata->pdev->dev, "stopping sid 0x%x status 0x%x\n", |
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cl_data->sensor_idx[i], cl_data->sensor_sts[i]); |
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} |
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} |
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cancel_delayed_work_sync(&cl_data->work); |
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cancel_delayed_work_sync(&cl_data->work_buffer); |
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amdtp_hid_remove(cl_data); |
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for (i = 0; i < cl_data->num_hid_devices; i++) { |
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if (in_data->sensor_virt_addr[i]) { |
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dma_free_coherent(&privdata->pdev->dev, 8 * sizeof(int), |
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in_data->sensor_virt_addr[i], |
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cl_data->sensor_dma_addr[i]); |
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} |
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} |
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return 0; |
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}
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