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1// SPDX-License-Identifier: GPL-2.0-or-later2/*3 * AMD MP2 1.1 communication driver4 *5 * Copyright (c) 2022, Advanced Micro Devices, Inc.6 * All Rights Reserved.7 *8 * Author: Basavaraj Natikar <Basavaraj.Natikar@amd.com>9 */10 11#include <linux/delay.h>12#include <linux/hid.h>13 14#include "amd_sfh_init.h"15#include "amd_sfh_interface.h"16#include "../hid_descriptor/amd_sfh_hid_desc.h"17 18static int amd_sfh_get_sensor_num(struct amd_mp2_dev *mp2, u8 *sensor_id)19{20 struct sfh_sensor_list *slist;21 struct sfh_base_info binfo;22 int num_of_sensors = 0;23 int i;24 25 memcpy_fromio(&binfo, mp2->vsbase, sizeof(struct sfh_base_info));26 slist = &binfo.sbase.s_list;27 28 for (i = 0; i < MAX_IDX; i++) {29 switch (i) {30 case ACCEL_IDX:31 case GYRO_IDX:32 case MAG_IDX:33 case ALS_IDX:34 case HPD_IDX:35 if (BIT(i) & slist->sl.sensors)36 sensor_id[num_of_sensors++] = i;37 break;38 }39 }40 41 return num_of_sensors;42}43 44static u32 amd_sfh_wait_for_response(struct amd_mp2_dev *mp2, u8 sid, u32 cmd_id)45{46 if (mp2->mp2_ops->response)47 return mp2->mp2_ops->response(mp2, sid, cmd_id);48 49 return 0;50}51 52static const char *get_sensor_name(int idx)53{54 switch (idx) {55 case ACCEL_IDX:56 return "accelerometer";57 case GYRO_IDX:58 return "gyroscope";59 case MAG_IDX:60 return "magnetometer";61 case ALS_IDX:62 return "ALS";63 case HPD_IDX:64 return "HPD";65 default:66 return "unknown sensor type";67 }68}69 70static int amd_sfh_hid_client_deinit(struct amd_mp2_dev *privdata)71{72 struct amdtp_cl_data *cl_data = privdata->cl_data;73 int i, status;74 75 for (i = 0; i < cl_data->num_hid_devices; i++) {76 switch (cl_data->sensor_idx[i]) {77 case HPD_IDX:78 privdata->dev_en.is_hpd_present = false;79 break;80 case ALS_IDX:81 privdata->dev_en.is_als_present = false;82 break;83 }84 85 if (cl_data->sensor_sts[i] == SENSOR_ENABLED) {86 privdata->mp2_ops->stop(privdata, cl_data->sensor_idx[i]);87 status = amd_sfh_wait_for_response88 (privdata, cl_data->sensor_idx[i], DISABLE_SENSOR);89 if (status == 0)90 cl_data->sensor_sts[i] = SENSOR_DISABLED;91 dev_dbg(&privdata->pdev->dev, "stopping sid 0x%x (%s) status 0x%x\n",92 cl_data->sensor_idx[i], get_sensor_name(cl_data->sensor_idx[i]),93 cl_data->sensor_sts[i]);94 }95 }96 97 cancel_delayed_work_sync(&cl_data->work);98 cancel_delayed_work_sync(&cl_data->work_buffer);99 amdtp_hid_remove(cl_data);100 101 return 0;102}103 104static int amd_sfh1_1_hid_client_init(struct amd_mp2_dev *privdata)105{106 struct amd_input_data *in_data = &privdata->in_data;107 struct amdtp_cl_data *cl_data = privdata->cl_data;108 struct amd_mp2_ops *mp2_ops = privdata->mp2_ops;109 struct amd_mp2_sensor_info info;110 struct request_list *req_list;111 u32 feature_report_size;112 u32 input_report_size;113 struct device *dev;114 int rc, i, status;115 u8 cl_idx;116 117 req_list = &cl_data->req_list;118 dev = &privdata->pdev->dev;119 amd_sfh1_1_set_desc_ops(mp2_ops);120 121 cl_data->num_hid_devices = amd_sfh_get_sensor_num(privdata, &cl_data->sensor_idx[0]);122 if (cl_data->num_hid_devices == 0)123 return -ENODEV;124 cl_data->is_any_sensor_enabled = false;125 126 INIT_DELAYED_WORK(&cl_data->work, amd_sfh_work);127 INIT_DELAYED_WORK(&cl_data->work_buffer, amd_sfh_work_buffer);128 INIT_LIST_HEAD(&req_list->list);129 cl_data->in_data = in_data;130 131 for (i = 0; i < cl_data->num_hid_devices; i++) {132 cl_data->sensor_sts[i] = SENSOR_DISABLED;133 cl_data->sensor_requested_cnt[i] = 0;134 cl_data->cur_hid_dev = i;135 cl_idx = cl_data->sensor_idx[i];136 137 cl_data->report_descr_sz[i] = mp2_ops->get_desc_sz(cl_idx, descr_size);138 if (!cl_data->report_descr_sz[i]) {139 rc = -EINVAL;140 goto cleanup;141 }142 feature_report_size = mp2_ops->get_desc_sz(cl_idx, feature_size);143 if (!feature_report_size) {144 rc = -EINVAL;145 goto cleanup;146 }147 input_report_size = mp2_ops->get_desc_sz(cl_idx, input_size);148 if (!input_report_size) {149 rc = -EINVAL;150 goto cleanup;151 }152 cl_data->feature_report[i] = devm_kzalloc(dev, feature_report_size, GFP_KERNEL);153 if (!cl_data->feature_report[i]) {154 rc = -ENOMEM;155 goto cleanup;156 }157 in_data->input_report[i] = devm_kzalloc(dev, input_report_size, GFP_KERNEL);158 if (!in_data->input_report[i]) {159 rc = -ENOMEM;160 goto cleanup;161 }162 163 info.sensor_idx = cl_idx;164 165 cl_data->report_descr[i] =166 devm_kzalloc(dev, cl_data->report_descr_sz[i], GFP_KERNEL);167 if (!cl_data->report_descr[i]) {168 rc = -ENOMEM;169 goto cleanup;170 }171 rc = mp2_ops->get_rep_desc(cl_idx, cl_data->report_descr[i]);172 if (rc)173 goto cleanup;174 175 writel(0, privdata->mmio + amd_get_p2c_val(privdata, 0));176 mp2_ops->start(privdata, info);177 status = amd_sfh_wait_for_response178 (privdata, cl_data->sensor_idx[i], ENABLE_SENSOR);179 180 cl_data->sensor_sts[i] = (status == 0) ? SENSOR_ENABLED : SENSOR_DISABLED;181 }182 183 for (i = 0; i < cl_data->num_hid_devices; i++) {184 cl_data->cur_hid_dev = i;185 if (cl_data->sensor_sts[i] == SENSOR_ENABLED) {186 cl_data->is_any_sensor_enabled = true;187 rc = amdtp_hid_probe(i, cl_data);188 if (rc)189 goto cleanup;190 switch (cl_data->sensor_idx[i]) {191 case HPD_IDX:192 privdata->dev_en.is_hpd_present = true;193 break;194 case ALS_IDX:195 privdata->dev_en.is_als_present = true;196 break;197 }198 }199 dev_dbg(dev, "sid 0x%x (%s) status 0x%x\n",200 cl_data->sensor_idx[i], get_sensor_name(cl_data->sensor_idx[i]),201 cl_data->sensor_sts[i]);202 }203 204 if (!cl_data->is_any_sensor_enabled) {205 dev_warn(dev, "No sensor registered, sensors not enabled is %d\n",206 cl_data->is_any_sensor_enabled);207 rc = -EOPNOTSUPP;208 goto cleanup;209 }210 211 schedule_delayed_work(&cl_data->work_buffer, msecs_to_jiffies(AMD_SFH_IDLE_LOOP));212 return 0;213 214cleanup:215 amd_sfh_hid_client_deinit(privdata);216 for (i = 0; i < cl_data->num_hid_devices; i++) {217 devm_kfree(dev, cl_data->feature_report[i]);218 devm_kfree(dev, in_data->input_report[i]);219 devm_kfree(dev, cl_data->report_descr[i]);220 }221 return rc;222}223 224static void amd_sfh_resume(struct amd_mp2_dev *mp2)225{226 struct amdtp_cl_data *cl_data = mp2->cl_data;227 struct amd_mp2_sensor_info info;228 int i, status;229 230 if (!cl_data->is_any_sensor_enabled) {231 amd_sfh_clear_intr(mp2);232 return;233 }234 235 for (i = 0; i < cl_data->num_hid_devices; i++) {236 if (cl_data->sensor_sts[i] == SENSOR_DISABLED) {237 info.sensor_idx = cl_data->sensor_idx[i];238 mp2->mp2_ops->start(mp2, info);239 status = amd_sfh_wait_for_response240 (mp2, cl_data->sensor_idx[i], ENABLE_SENSOR);241 if (status == 0)242 status = SENSOR_ENABLED;243 if (status == SENSOR_ENABLED)244 cl_data->sensor_sts[i] = SENSOR_ENABLED;245 dev_dbg(&mp2->pdev->dev, "resume sid 0x%x (%s) status 0x%x\n",246 cl_data->sensor_idx[i], get_sensor_name(cl_data->sensor_idx[i]),247 cl_data->sensor_sts[i]);248 }249 }250 251 schedule_delayed_work(&cl_data->work_buffer, msecs_to_jiffies(AMD_SFH_IDLE_LOOP));252 amd_sfh_clear_intr(mp2);253}254 255static void amd_sfh_suspend(struct amd_mp2_dev *mp2)256{257 struct amdtp_cl_data *cl_data = mp2->cl_data;258 int i, status;259 260 if (!cl_data->is_any_sensor_enabled) {261 amd_sfh_clear_intr(mp2);262 return;263 }264 265 for (i = 0; i < cl_data->num_hid_devices; i++) {266 if (cl_data->sensor_idx[i] != HPD_IDX &&267 cl_data->sensor_sts[i] == SENSOR_ENABLED) {268 mp2->mp2_ops->stop(mp2, cl_data->sensor_idx[i]);269 status = amd_sfh_wait_for_response270 (mp2, cl_data->sensor_idx[i], DISABLE_SENSOR);271 if (status == 0)272 status = SENSOR_DISABLED;273 if (status != SENSOR_ENABLED)274 cl_data->sensor_sts[i] = SENSOR_DISABLED;275 dev_dbg(&mp2->pdev->dev, "suspend sid 0x%x (%s) status 0x%x\n",276 cl_data->sensor_idx[i], get_sensor_name(cl_data->sensor_idx[i]),277 cl_data->sensor_sts[i]);278 }279 }280 281 cancel_delayed_work_sync(&cl_data->work_buffer);282 amd_sfh_clear_intr(mp2);283}284 285static void amd_mp2_pci_remove(void *privdata)286{287 struct amd_mp2_dev *mp2 = privdata;288 289 sfh_deinit_emp2();290 amd_sfh_hid_client_deinit(privdata);291 mp2->mp2_ops->stop_all(mp2);292 pci_intx(mp2->pdev, false);293 amd_sfh_clear_intr(mp2);294}295 296static void amd_sfh_set_ops(struct amd_mp2_dev *mp2)297{298 struct amd_mp2_ops *mp2_ops;299 300 sfh_interface_init(mp2);301 mp2_ops = mp2->mp2_ops;302 mp2_ops->clear_intr = amd_sfh_clear_intr_v2;303 mp2_ops->init_intr = amd_sfh_irq_init_v2;304 mp2_ops->suspend = amd_sfh_suspend;305 mp2_ops->resume = amd_sfh_resume;306 mp2_ops->remove = amd_mp2_pci_remove;307}308 309int amd_sfh1_1_init(struct amd_mp2_dev *mp2)310{311 u32 phy_base = readl(mp2->mmio + amd_get_c2p_val(mp2, 22));312 struct device *dev = &mp2->pdev->dev;313 struct sfh_base_info binfo;314 int rc;315 316 phy_base <<= 21;317 if (!devm_request_mem_region(dev, phy_base, 128 * 1024, "amd_sfh")) {318 dev_dbg(dev, "can't reserve mmio registers\n");319 return -ENOMEM;320 }321 322 mp2->vsbase = devm_ioremap(dev, phy_base, 128 * 1024);323 if (!mp2->vsbase) {324 dev_dbg(dev, "failed to remap vsbase\n");325 return -ENOMEM;326 }327 328 /* Before accessing give time for SFH firmware for processing configuration */329 msleep(5000);330 331 memcpy_fromio(&binfo, mp2->vsbase, sizeof(struct sfh_base_info));332 if (binfo.sbase.fw_info.fw_ver == 0 || binfo.sbase.s_list.sl.sensors == 0) {333 dev_dbg(dev, "No sensor registered\n");334 return -EOPNOTSUPP;335 }336 dev_dbg(dev, "firmware version 0x%x\n", binfo.sbase.fw_info.fw_ver);337 338 amd_sfh_set_ops(mp2);339 340 rc = amd_sfh_irq_init(mp2);341 if (rc) {342 sfh_deinit_emp2();343 dev_err(dev, "amd_sfh_irq_init failed\n");344 return rc;345 }346 347 rc = amd_sfh1_1_hid_client_init(mp2);348 if (rc) {349 sfh_deinit_emp2();350 if ((rc != -ENODEV) && (rc != -EOPNOTSUPP))351 dev_err(dev, "amd_sfh1_1_hid_client_init failed\n");352 return rc;353 }354 355 return rc;356}357