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1// SPDX-License-Identifier: GPL-2.0-or-later2/*3 * AMD MP2 1.1 descriptor interfaces4 *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/hid-sensor-ids.h>12 13#include "amd_sfh_interface.h"14#include "../hid_descriptor/amd_sfh_hid_desc.h"15#include "../hid_descriptor/amd_sfh_hid_report_desc.h"16 17#define SENSOR_PROP_REPORTING_STATE_ALL_EVENTS_ENUM 0x4118#define SENSOR_PROP_POWER_STATE_D0_FULL_POWER_ENUM 0x5119#define HID_DEFAULT_REPORT_INTERVAL 0x5020#define HID_DEFAULT_MIN_VALUE 0X7F21#define HID_DEFAULT_MAX_VALUE 0x8022#define HID_DEFAULT_SENSITIVITY 0x7F23#define HID_USAGE_SENSOR_PROPERTY_CONNECTION_TYPE_PC_INTEGRATED_ENUM 0x0124/* state enums */25#define HID_USAGE_SENSOR_STATE_READY_ENUM 0x0226#define HID_USAGE_SENSOR_STATE_INITIALIZING_ENUM 0x0527#define HID_USAGE_SENSOR_EVENT_DATA_UPDATED_ENUM 0x0428 29static int get_report_desc(int sensor_idx, u8 *rep_desc)30{31 switch (sensor_idx) {32 case ACCEL_IDX: /* accelerometer */33 memset(rep_desc, 0, sizeof(accel3_report_descriptor));34 memcpy(rep_desc, accel3_report_descriptor,35 sizeof(accel3_report_descriptor));36 break;37 case GYRO_IDX: /* gyroscope */38 memset(rep_desc, 0, sizeof(gyro3_report_descriptor));39 memcpy(rep_desc, gyro3_report_descriptor,40 sizeof(gyro3_report_descriptor));41 break;42 case MAG_IDX: /* magnetometer */43 memset(rep_desc, 0, sizeof(comp3_report_descriptor));44 memcpy(rep_desc, comp3_report_descriptor,45 sizeof(comp3_report_descriptor));46 break;47 case ALS_IDX: /* ambient light sensor */48 memset(rep_desc, 0, sizeof(als_report_descriptor));49 memcpy(rep_desc, als_report_descriptor,50 sizeof(als_report_descriptor));51 break;52 case HPD_IDX: /* HPD sensor */53 memset(rep_desc, 0, sizeof(hpd_report_descriptor));54 memcpy(rep_desc, hpd_report_descriptor,55 sizeof(hpd_report_descriptor));56 break;57 }58 return 0;59}60 61static void get_common_features(struct common_feature_property *common, int report_id)62{63 common->report_id = report_id;64 common->connection_type = HID_USAGE_SENSOR_PROPERTY_CONNECTION_TYPE_PC_INTEGRATED_ENUM;65 common->report_state = SENSOR_PROP_REPORTING_STATE_ALL_EVENTS_ENUM;66 common->power_state = SENSOR_PROP_POWER_STATE_D0_FULL_POWER_ENUM;67 common->sensor_state = HID_USAGE_SENSOR_STATE_INITIALIZING_ENUM;68 common->report_interval = HID_DEFAULT_REPORT_INTERVAL;69}70 71static u8 get_feature_rep(int sensor_idx, int report_id, u8 *feature_report)72{73 struct magno_feature_report magno_feature;74 struct accel3_feature_report acc_feature;75 struct gyro_feature_report gyro_feature;76 struct hpd_feature_report hpd_feature;77 struct als_feature_report als_feature;78 u8 report_size = 0;79 80 if (!feature_report)81 return report_size;82 83 switch (sensor_idx) {84 case ACCEL_IDX: /* accelerometer */85 get_common_features(&acc_feature.common_property, report_id);86 acc_feature.accel_change_sesnitivity = HID_DEFAULT_SENSITIVITY;87 acc_feature.accel_sensitivity_min = HID_DEFAULT_MIN_VALUE;88 acc_feature.accel_sensitivity_max = HID_DEFAULT_MAX_VALUE;89 memcpy(feature_report, &acc_feature, sizeof(acc_feature));90 report_size = sizeof(acc_feature);91 break;92 case GYRO_IDX: /* gyroscope */93 get_common_features(&gyro_feature.common_property, report_id);94 gyro_feature.gyro_change_sesnitivity = HID_DEFAULT_SENSITIVITY;95 gyro_feature.gyro_sensitivity_min = HID_DEFAULT_MIN_VALUE;96 gyro_feature.gyro_sensitivity_max = HID_DEFAULT_MAX_VALUE;97 memcpy(feature_report, &gyro_feature, sizeof(gyro_feature));98 report_size = sizeof(gyro_feature);99 break;100 case MAG_IDX: /* magnetometer */101 get_common_features(&magno_feature.common_property, report_id);102 magno_feature.magno_headingchange_sensitivity = HID_DEFAULT_SENSITIVITY;103 magno_feature.heading_min = HID_DEFAULT_MIN_VALUE;104 magno_feature.heading_max = HID_DEFAULT_MAX_VALUE;105 magno_feature.flux_change_sensitivity = HID_DEFAULT_MIN_VALUE;106 magno_feature.flux_min = HID_DEFAULT_MIN_VALUE;107 magno_feature.flux_max = HID_DEFAULT_MAX_VALUE;108 memcpy(feature_report, &magno_feature, sizeof(magno_feature));109 report_size = sizeof(magno_feature);110 break;111 case ALS_IDX: /* ambient light sensor */112 get_common_features(&als_feature.common_property, report_id);113 als_feature.als_change_sesnitivity = HID_DEFAULT_SENSITIVITY;114 als_feature.als_sensitivity_min = HID_DEFAULT_MIN_VALUE;115 als_feature.als_sensitivity_max = HID_DEFAULT_MAX_VALUE;116 memcpy(feature_report, &als_feature, sizeof(als_feature));117 report_size = sizeof(als_feature);118 break;119 case HPD_IDX: /* human presence detection sensor */120 get_common_features(&hpd_feature.common_property, report_id);121 memcpy(feature_report, &hpd_feature, sizeof(hpd_feature));122 report_size = sizeof(hpd_feature);123 break;124 }125 return report_size;126}127 128static void get_common_inputs(struct common_input_property *common, int report_id)129{130 common->report_id = report_id;131 common->sensor_state = HID_USAGE_SENSOR_STATE_READY_ENUM;132 common->event_type = HID_USAGE_SENSOR_EVENT_DATA_UPDATED_ENUM;133}134 135int amd_sfh_float_to_int(u32 flt32_val)136{137 int fraction, shift, mantissa, sign, exp, zeropre;138 139 mantissa = flt32_val & GENMASK(22, 0);140 sign = (flt32_val & BIT(31)) ? -1 : 1;141 exp = (flt32_val & ~BIT(31)) >> 23;142 143 if (!exp && !mantissa)144 return 0;145 146 /*147 * Calculate the exponent and fraction part of floating148 * point representation.149 */150 exp -= 127;151 if (exp < 0) {152 exp = -exp;153 if (exp >= BITS_PER_TYPE(u32))154 return 0;155 zeropre = (((BIT(23) + mantissa) * 100) >> 23) >> exp;156 return zeropre >= 50 ? sign : 0;157 }158 159 shift = 23 - exp;160 if (abs(shift) >= BITS_PER_TYPE(u32))161 return 0;162 163 if (shift < 0) {164 shift = -shift;165 flt32_val = BIT(exp) + (mantissa << shift);166 shift = 0;167 } else {168 flt32_val = BIT(exp) + (mantissa >> shift);169 }170 171 fraction = (shift == 0) ? 0 : mantissa & GENMASK(shift - 1, 0);172 173 return (((fraction * 100) >> shift) >= 50) ? sign * (flt32_val + 1) : sign * flt32_val;174}175 176static u8 get_input_rep(u8 current_index, int sensor_idx, int report_id,177 struct amd_input_data *in_data)178{179 struct amd_mp2_dev *mp2 = container_of(in_data, struct amd_mp2_dev, in_data);180 u8 *input_report = in_data->input_report[current_index];181 struct magno_input_report magno_input;182 struct accel3_input_report acc_input;183 struct gyro_input_report gyro_input;184 struct als_input_report als_input;185 struct hpd_input_report hpd_input;186 struct sfh_accel_data accel_data;187 struct sfh_gyro_data gyro_data;188 struct sfh_mag_data mag_data;189 struct sfh_als_data als_data;190 struct hpd_status hpdstatus;191 struct sfh_base_info binfo;192 void __iomem *sensoraddr;193 u8 report_size = 0;194 195 if (!input_report)196 return report_size;197 198 switch (sensor_idx) {199 case ACCEL_IDX: /* accelerometer */200 sensoraddr = mp2->vsbase + (ACCEL_IDX * SENSOR_DATA_MEM_SIZE_DEFAULT) +201 OFFSET_SENSOR_DATA_DEFAULT;202 memcpy_fromio(&accel_data, sensoraddr, sizeof(struct sfh_accel_data));203 get_common_inputs(&acc_input.common_property, report_id);204 acc_input.in_accel_x_value = amd_sfh_float_to_int(accel_data.acceldata.x) / 100;205 acc_input.in_accel_y_value = amd_sfh_float_to_int(accel_data.acceldata.y) / 100;206 acc_input.in_accel_z_value = amd_sfh_float_to_int(accel_data.acceldata.z) / 100;207 memcpy(input_report, &acc_input, sizeof(acc_input));208 report_size = sizeof(acc_input);209 break;210 case GYRO_IDX: /* gyroscope */211 sensoraddr = mp2->vsbase + (GYRO_IDX * SENSOR_DATA_MEM_SIZE_DEFAULT) +212 OFFSET_SENSOR_DATA_DEFAULT;213 memcpy_fromio(&gyro_data, sensoraddr, sizeof(struct sfh_gyro_data));214 get_common_inputs(&gyro_input.common_property, report_id);215 gyro_input.in_angel_x_value = amd_sfh_float_to_int(gyro_data.gyrodata.x) / 1000;216 gyro_input.in_angel_y_value = amd_sfh_float_to_int(gyro_data.gyrodata.y) / 1000;217 gyro_input.in_angel_z_value = amd_sfh_float_to_int(gyro_data.gyrodata.z) / 1000;218 memcpy(input_report, &gyro_input, sizeof(gyro_input));219 report_size = sizeof(gyro_input);220 break;221 case MAG_IDX: /* magnetometer */222 sensoraddr = mp2->vsbase + (MAG_IDX * SENSOR_DATA_MEM_SIZE_DEFAULT) +223 OFFSET_SENSOR_DATA_DEFAULT;224 memcpy_fromio(&mag_data, sensoraddr, sizeof(struct sfh_mag_data));225 get_common_inputs(&magno_input.common_property, report_id);226 magno_input.in_magno_x = amd_sfh_float_to_int(mag_data.magdata.x) / 100;227 magno_input.in_magno_y = amd_sfh_float_to_int(mag_data.magdata.y) / 100;228 magno_input.in_magno_z = amd_sfh_float_to_int(mag_data.magdata.z) / 100;229 magno_input.in_magno_accuracy = mag_data.accuracy / 100;230 memcpy(input_report, &magno_input, sizeof(magno_input));231 report_size = sizeof(magno_input);232 break;233 case ALS_IDX:234 sensoraddr = mp2->vsbase + (ALS_IDX * SENSOR_DATA_MEM_SIZE_DEFAULT) +235 OFFSET_SENSOR_DATA_DEFAULT;236 memcpy_fromio(&als_data, sensoraddr, sizeof(struct sfh_als_data));237 get_common_inputs(&als_input.common_property, report_id);238 als_input.illuminance_value = amd_sfh_float_to_int(als_data.lux);239 240 memcpy_fromio(&binfo, mp2->vsbase, sizeof(struct sfh_base_info));241 if (binfo.sbase.s_prop[ALS_IDX].sf.feat & 0x2) {242 als_input.light_color_temp = als_data.light_color_temp;243 als_input.chromaticity_x_value =244 amd_sfh_float_to_int(als_data.chromaticity_x);245 als_input.chromaticity_y_value =246 amd_sfh_float_to_int(als_data.chromaticity_y);247 }248 249 report_size = sizeof(als_input);250 memcpy(input_report, &als_input, sizeof(als_input));251 break;252 case HPD_IDX:253 get_common_inputs(&hpd_input.common_property, report_id);254 hpdstatus.val = readl(mp2->mmio + amd_get_c2p_val(mp2, 4));255 hpd_input.human_presence = hpdstatus.shpd.presence;256 report_size = sizeof(hpd_input);257 memcpy(input_report, &hpd_input, sizeof(hpd_input));258 break;259 }260 return report_size;261}262 263static u32 get_desc_size(int sensor_idx, int descriptor_name)264{265 switch (sensor_idx) {266 case ACCEL_IDX:267 switch (descriptor_name) {268 case descr_size:269 return sizeof(accel3_report_descriptor);270 case input_size:271 return sizeof(struct accel3_input_report);272 case feature_size:273 return sizeof(struct accel3_feature_report);274 }275 break;276 case GYRO_IDX:277 switch (descriptor_name) {278 case descr_size:279 return sizeof(gyro3_report_descriptor);280 case input_size:281 return sizeof(struct gyro_input_report);282 case feature_size:283 return sizeof(struct gyro_feature_report);284 }285 break;286 case MAG_IDX:287 switch (descriptor_name) {288 case descr_size:289 return sizeof(comp3_report_descriptor);290 case input_size:291 return sizeof(struct magno_input_report);292 case feature_size:293 return sizeof(struct magno_feature_report);294 }295 break;296 case ALS_IDX:297 switch (descriptor_name) {298 case descr_size:299 return sizeof(als_report_descriptor);300 case input_size:301 return sizeof(struct als_input_report);302 case feature_size:303 return sizeof(struct als_feature_report);304 }305 break;306 case HPD_IDX:307 switch (descriptor_name) {308 case descr_size:309 return sizeof(hpd_report_descriptor);310 case input_size:311 return sizeof(struct hpd_input_report);312 case feature_size:313 return sizeof(struct hpd_feature_report);314 }315 break;316 }317 318 return 0;319}320 321void amd_sfh1_1_set_desc_ops(struct amd_mp2_ops *mp2_ops)322{323 mp2_ops->get_rep_desc = get_report_desc;324 mp2_ops->get_feat_rep = get_feature_rep;325 mp2_ops->get_desc_sz = get_desc_size;326 mp2_ops->get_in_rep = get_input_rep;327}328