338 lines
8.9 KiB
C
338 lines
8.9 KiB
C
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// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* AMD MP2 1.1 communication driver
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*
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* Copyright (c) 2022, Advanced Micro Devices, Inc.
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* All Rights Reserved.
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*
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* Author: Basavaraj Natikar <Basavaraj.Natikar@amd.com>
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*/
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#include <linux/delay.h>
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#include <linux/hid.h>
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#include "amd_sfh_init.h"
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#include "amd_sfh_interface.h"
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#include "../hid_descriptor/amd_sfh_hid_desc.h"
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static int amd_sfh_get_sensor_num(struct amd_mp2_dev *mp2, u8 *sensor_id)
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{
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struct sfh_sensor_list *slist;
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struct sfh_base_info binfo;
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int num_of_sensors = 0;
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int i;
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memcpy_fromio(&binfo, mp2->vsbase, sizeof(struct sfh_base_info));
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slist = &binfo.sbase.s_list;
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for (i = 0; i < MAX_IDX; i++) {
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switch (i) {
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case ACCEL_IDX:
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case GYRO_IDX:
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case MAG_IDX:
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case ALS_IDX:
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case HPD_IDX:
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if (BIT(i) & slist->sl.sensors)
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sensor_id[num_of_sensors++] = i;
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break;
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}
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}
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return num_of_sensors;
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}
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static u32 amd_sfh_wait_for_response(struct amd_mp2_dev *mp2, u8 sid, u32 cmd_id)
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{
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if (mp2->mp2_ops->response)
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return mp2->mp2_ops->response(mp2, sid, cmd_id);
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return 0;
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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 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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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], DISABLE_SENSOR);
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if (status == 0)
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cl_data->sensor_sts[i] = SENSOR_DISABLED;
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dev_dbg(&privdata->pdev->dev, "stopping 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);
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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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return 0;
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}
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static int amd_sfh1_1_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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u32 feature_report_size;
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u32 input_report_size;
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struct device *dev;
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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_sfh1_1_set_desc_ops(mp2_ops);
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cl_data->num_hid_devices = amd_sfh_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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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.sensor_idx = cl_idx;
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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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writel(0, privdata->mmio + AMD_P2C_MSG(0));
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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], ENABLE_SENSOR);
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status = (status == 0) ? SENSOR_ENABLED : SENSOR_DISABLED;
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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(i, 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], DISABLE_SENSOR);
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if (status == 0)
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status = 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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}
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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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dev_warn(dev, "Failed to discover, sensors not enabled is %d\n",
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cl_data->is_any_sensor_enabled);
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rc = -EOPNOTSUPP;
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goto cleanup;
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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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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]);
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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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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.sensor_idx = cl_data->sensor_idx[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], ENABLE_SENSOR);
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if (status == 0)
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status = 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], DISABLE_SENSOR);
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if (status == 0)
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status = 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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static void amd_mp2_pci_remove(void *privdata)
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{
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struct amd_mp2_dev *mp2 = privdata;
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amd_sfh_hid_client_deinit(privdata);
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mp2->mp2_ops->stop_all(mp2);
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pci_intx(mp2->pdev, false);
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amd_sfh_clear_intr(mp2);
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}
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static void amd_sfh_set_ops(struct amd_mp2_dev *mp2)
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{
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struct amd_mp2_ops *mp2_ops;
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sfh_interface_init(mp2);
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mp2_ops = mp2->mp2_ops;
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mp2_ops->clear_intr = amd_sfh_clear_intr_v2,
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mp2_ops->init_intr = amd_sfh_irq_init_v2,
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mp2_ops->suspend = amd_sfh_suspend;
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mp2_ops->resume = amd_sfh_resume;
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mp2_ops->remove = amd_mp2_pci_remove;
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}
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int amd_sfh1_1_init(struct amd_mp2_dev *mp2)
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{
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u32 phy_base = readl(mp2->mmio + AMD_C2P_MSG(22));
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struct device *dev = &mp2->pdev->dev;
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struct sfh_base_info binfo;
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int rc;
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phy_base <<= 21;
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if (!devm_request_mem_region(dev, phy_base, 128 * 1024, "amd_sfh")) {
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dev_dbg(dev, "can't reserve mmio registers\n");
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return -ENOMEM;
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}
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mp2->vsbase = devm_ioremap(dev, phy_base, 128 * 1024);
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if (!mp2->vsbase) {
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dev_dbg(dev, "failed to remap vsbase\n");
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return -ENOMEM;
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}
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/* Before accessing give time for SFH firmware for processing configuration */
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msleep(5000);
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memcpy_fromio(&binfo, mp2->vsbase, sizeof(struct sfh_base_info));
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if (binfo.sbase.fw_info.fw_ver == 0 || binfo.sbase.s_list.sl.sensors == 0) {
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dev_dbg(dev, "failed to get sensors\n");
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return -EOPNOTSUPP;
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}
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dev_dbg(dev, "firmware version 0x%x\n", binfo.sbase.fw_info.fw_ver);
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amd_sfh_set_ops(mp2);
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rc = amd_sfh_irq_init(mp2);
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if (rc) {
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dev_err(dev, "amd_sfh_irq_init failed\n");
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return rc;
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}
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rc = amd_sfh1_1_hid_client_init(mp2);
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if (rc) {
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dev_err(dev, "amd_sfh1_1_hid_client_init failed\n");
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return rc;
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}
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return rc;
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}
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