1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * AMD MP2 1.1 descriptor interfaces 4 * 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 0x41 18 #define SENSOR_PROP_POWER_STATE_D0_FULL_POWER_ENUM 0x51 19 #define HID_DEFAULT_REPORT_INTERVAL 0x50 20 #define HID_DEFAULT_MIN_VALUE 0X7F 21 #define HID_DEFAULT_MAX_VALUE 0x80 22 #define HID_DEFAULT_SENSITIVITY 0x7F 23 #define HID_USAGE_SENSOR_PROPERTY_CONNECTION_TYPE_PC_INTEGRATED_ENUM 0x01 24 /* state enums */ 25 #define HID_USAGE_SENSOR_STATE_READY_ENUM 0x02 26 #define HID_USAGE_SENSOR_STATE_INITIALIZING_ENUM 0x05 27 #define HID_USAGE_SENSOR_EVENT_DATA_UPDATED_ENUM 0x04 28 29 static 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 61 static 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 71 static 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 } 127 128 static 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 } 134 135 static int float_to_int(u32 float32) 136 { 137 int fraction, shift, mantissa, sign, exp, zeropre; 138 139 mantissa = float32 & GENMASK(22, 0); 140 sign = (float32 & BIT(31)) ? -1 : 1; 141 exp = (float32 & ~BIT(31)) >> 23; 142 143 if (!exp && !mantissa) 144 return 0; 145 146 exp -= 127; 147 if (exp < 0) { 148 exp = -exp; 149 zeropre = (((BIT(23) + mantissa) * 100) >> 23) >> exp; 150 return zeropre >= 50 ? sign : 0; 151 } 152 153 shift = 23 - exp; 154 float32 = BIT(exp) + (mantissa >> shift); 155 fraction = mantissa & GENMASK(shift - 1, 0); 156 157 return (((fraction * 100) >> shift) >= 50) ? sign * (float32 + 1) : sign * float32; 158 } 159 160 static u8 get_input_rep(u8 current_index, int sensor_idx, int report_id, 161 struct amd_input_data *in_data) 162 { 163 struct amd_mp2_dev *mp2 = container_of(in_data, struct amd_mp2_dev, in_data); 164 u8 *input_report = in_data->input_report[current_index]; 165 struct magno_input_report magno_input; 166 struct accel3_input_report acc_input; 167 struct gyro_input_report gyro_input; 168 struct als_input_report als_input; 169 struct hpd_input_report hpd_input; 170 struct sfh_accel_data accel_data; 171 struct sfh_gyro_data gyro_data; 172 struct sfh_mag_data mag_data; 173 struct sfh_als_data als_data; 174 struct hpd_status hpdstatus; 175 void __iomem *sensoraddr; 176 u8 report_size = 0; 177 178 if (!input_report) 179 return report_size; 180 181 switch (sensor_idx) { 182 case ACCEL_IDX: /* accelerometer */ 183 sensoraddr = mp2->vsbase + (ACCEL_IDX * SENSOR_DATA_MEM_SIZE_DEFAULT) + 184 OFFSET_SENSOR_DATA_DEFAULT; 185 memcpy_fromio(&accel_data, sensoraddr, sizeof(struct sfh_accel_data)); 186 get_common_inputs(&acc_input.common_property, report_id); 187 acc_input.in_accel_x_value = float_to_int(accel_data.acceldata.x) / 100; 188 acc_input.in_accel_y_value = float_to_int(accel_data.acceldata.y) / 100; 189 acc_input.in_accel_z_value = float_to_int(accel_data.acceldata.z) / 100; 190 memcpy(input_report, &acc_input, sizeof(acc_input)); 191 report_size = sizeof(acc_input); 192 break; 193 case GYRO_IDX: /* gyroscope */ 194 sensoraddr = mp2->vsbase + (GYRO_IDX * SENSOR_DATA_MEM_SIZE_DEFAULT) + 195 OFFSET_SENSOR_DATA_DEFAULT; 196 memcpy_fromio(&gyro_data, sensoraddr, sizeof(struct sfh_gyro_data)); 197 get_common_inputs(&gyro_input.common_property, report_id); 198 gyro_input.in_angel_x_value = float_to_int(gyro_data.gyrodata.x) / 1000; 199 gyro_input.in_angel_y_value = float_to_int(gyro_data.gyrodata.y) / 1000; 200 gyro_input.in_angel_z_value = float_to_int(gyro_data.gyrodata.z) / 1000; 201 memcpy(input_report, &gyro_input, sizeof(gyro_input)); 202 report_size = sizeof(gyro_input); 203 break; 204 case MAG_IDX: /* magnetometer */ 205 sensoraddr = mp2->vsbase + (MAG_IDX * SENSOR_DATA_MEM_SIZE_DEFAULT) + 206 OFFSET_SENSOR_DATA_DEFAULT; 207 memcpy_fromio(&mag_data, sensoraddr, sizeof(struct sfh_mag_data)); 208 get_common_inputs(&magno_input.common_property, report_id); 209 magno_input.in_magno_x = float_to_int(mag_data.magdata.x) / 100; 210 magno_input.in_magno_y = float_to_int(mag_data.magdata.y) / 100; 211 magno_input.in_magno_z = float_to_int(mag_data.magdata.z) / 100; 212 magno_input.in_magno_accuracy = mag_data.accuracy / 100; 213 memcpy(input_report, &magno_input, sizeof(magno_input)); 214 report_size = sizeof(magno_input); 215 break; 216 case ALS_IDX: 217 sensoraddr = mp2->vsbase + (ALS_IDX * SENSOR_DATA_MEM_SIZE_DEFAULT) + 218 OFFSET_SENSOR_DATA_DEFAULT; 219 memcpy_fromio(&als_data, sensoraddr, sizeof(struct sfh_als_data)); 220 get_common_inputs(&als_input.common_property, report_id); 221 als_input.illuminance_value = als_data.lux; 222 report_size = sizeof(als_input); 223 memcpy(input_report, &als_input, sizeof(als_input)); 224 break; 225 case HPD_IDX: 226 get_common_inputs(&hpd_input.common_property, report_id); 227 hpdstatus.val = readl(mp2->mmio + AMD_C2P_MSG(4)); 228 hpd_input.human_presence = hpdstatus.shpd.presence; 229 report_size = sizeof(hpd_input); 230 memcpy(input_report, &hpd_input, sizeof(hpd_input)); 231 break; 232 } 233 return report_size; 234 } 235 236 static u32 get_desc_size(int sensor_idx, int descriptor_name) 237 { 238 switch (sensor_idx) { 239 case ACCEL_IDX: 240 switch (descriptor_name) { 241 case descr_size: 242 return sizeof(accel3_report_descriptor); 243 case input_size: 244 return sizeof(struct accel3_input_report); 245 case feature_size: 246 return sizeof(struct accel3_feature_report); 247 } 248 break; 249 case GYRO_IDX: 250 switch (descriptor_name) { 251 case descr_size: 252 return sizeof(gyro3_report_descriptor); 253 case input_size: 254 return sizeof(struct gyro_input_report); 255 case feature_size: 256 return sizeof(struct gyro_feature_report); 257 } 258 break; 259 case MAG_IDX: 260 switch (descriptor_name) { 261 case descr_size: 262 return sizeof(comp3_report_descriptor); 263 case input_size: 264 return sizeof(struct magno_input_report); 265 case feature_size: 266 return sizeof(struct magno_feature_report); 267 } 268 break; 269 case ALS_IDX: 270 switch (descriptor_name) { 271 case descr_size: 272 return sizeof(als_report_descriptor); 273 case input_size: 274 return sizeof(struct als_input_report); 275 case feature_size: 276 return sizeof(struct als_feature_report); 277 } 278 break; 279 case HPD_IDX: 280 switch (descriptor_name) { 281 case descr_size: 282 return sizeof(hpd_report_descriptor); 283 case input_size: 284 return sizeof(struct hpd_input_report); 285 case feature_size: 286 return sizeof(struct hpd_feature_report); 287 } 288 break; 289 } 290 291 return 0; 292 } 293 294 void amd_sfh1_1_set_desc_ops(struct amd_mp2_ops *mp2_ops) 295 { 296 mp2_ops->get_rep_desc = get_report_desc; 297 mp2_ops->get_feat_rep = get_feature_rep; 298 mp2_ops->get_desc_sz = get_desc_size; 299 mp2_ops->get_in_rep = get_input_rep; 300 } 301