diff options
Diffstat (limited to 'drivers/hid/amd-sfh-hid/sfh1_1/amd_sfh_desc.c')
| -rw-r--r-- | drivers/hid/amd-sfh-hid/sfh1_1/amd_sfh_desc.c | 316 |
1 files changed, 316 insertions, 0 deletions
diff --git a/drivers/hid/amd-sfh-hid/sfh1_1/amd_sfh_desc.c b/drivers/hid/amd-sfh-hid/sfh1_1/amd_sfh_desc.c new file mode 100644 index 000000000..06bdcf072 --- /dev/null +++ b/drivers/hid/amd-sfh-hid/sfh1_1/amd_sfh_desc.c @@ -0,0 +1,316 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * AMD MP2 1.1 descriptor interfaces + * + * Copyright (c) 2022, Advanced Micro Devices, Inc. + * All Rights Reserved. + * + * Author: Basavaraj Natikar <Basavaraj.Natikar@amd.com> + */ + +#include <linux/hid-sensor-ids.h> + +#include "amd_sfh_interface.h" +#include "../hid_descriptor/amd_sfh_hid_desc.h" +#include "../hid_descriptor/amd_sfh_hid_report_desc.h" + +#define SENSOR_PROP_REPORTING_STATE_ALL_EVENTS_ENUM 0x41 +#define SENSOR_PROP_POWER_STATE_D0_FULL_POWER_ENUM 0x51 +#define HID_DEFAULT_REPORT_INTERVAL 0x50 +#define HID_DEFAULT_MIN_VALUE 0X7F +#define HID_DEFAULT_MAX_VALUE 0x80 +#define HID_DEFAULT_SENSITIVITY 0x7F +#define HID_USAGE_SENSOR_PROPERTY_CONNECTION_TYPE_PC_INTEGRATED_ENUM 0x01 +/* state enums */ +#define HID_USAGE_SENSOR_STATE_READY_ENUM 0x02 +#define HID_USAGE_SENSOR_STATE_INITIALIZING_ENUM 0x05 +#define HID_USAGE_SENSOR_EVENT_DATA_UPDATED_ENUM 0x04 + +static int get_report_desc(int sensor_idx, u8 *rep_desc) +{ + switch (sensor_idx) { + case ACCEL_IDX: /* accelerometer */ + memset(rep_desc, 0, sizeof(accel3_report_descriptor)); + memcpy(rep_desc, accel3_report_descriptor, + sizeof(accel3_report_descriptor)); + break; + case GYRO_IDX: /* gyroscope */ + memset(rep_desc, 0, sizeof(gyro3_report_descriptor)); + memcpy(rep_desc, gyro3_report_descriptor, + sizeof(gyro3_report_descriptor)); + break; + case MAG_IDX: /* magnetometer */ + memset(rep_desc, 0, sizeof(comp3_report_descriptor)); + memcpy(rep_desc, comp3_report_descriptor, + sizeof(comp3_report_descriptor)); + break; + case ALS_IDX: /* ambient light sensor */ + memset(rep_desc, 0, sizeof(als_report_descriptor)); + memcpy(rep_desc, als_report_descriptor, + sizeof(als_report_descriptor)); + break; + case HPD_IDX: /* HPD sensor */ + memset(rep_desc, 0, sizeof(hpd_report_descriptor)); + memcpy(rep_desc, hpd_report_descriptor, + sizeof(hpd_report_descriptor)); + break; + } + return 0; +} + +static void get_common_features(struct common_feature_property *common, int report_id) +{ + common->report_id = report_id; + common->connection_type = HID_USAGE_SENSOR_PROPERTY_CONNECTION_TYPE_PC_INTEGRATED_ENUM; + common->report_state = SENSOR_PROP_REPORTING_STATE_ALL_EVENTS_ENUM; + common->power_state = SENSOR_PROP_POWER_STATE_D0_FULL_POWER_ENUM; + common->sensor_state = HID_USAGE_SENSOR_STATE_INITIALIZING_ENUM; + common->report_interval = HID_DEFAULT_REPORT_INTERVAL; +} + +static u8 get_feature_rep(int sensor_idx, int report_id, u8 *feature_report) +{ + struct magno_feature_report magno_feature; + struct accel3_feature_report acc_feature; + struct gyro_feature_report gyro_feature; + struct hpd_feature_report hpd_feature; + struct als_feature_report als_feature; + u8 report_size = 0; + + if (!feature_report) + return report_size; + + switch (sensor_idx) { + case ACCEL_IDX: /* accelerometer */ + get_common_features(&acc_feature.common_property, report_id); + acc_feature.accel_change_sesnitivity = HID_DEFAULT_SENSITIVITY; + acc_feature.accel_sensitivity_min = HID_DEFAULT_MIN_VALUE; + acc_feature.accel_sensitivity_max = HID_DEFAULT_MAX_VALUE; + memcpy(feature_report, &acc_feature, sizeof(acc_feature)); + report_size = sizeof(acc_feature); + break; + case GYRO_IDX: /* gyroscope */ + get_common_features(&gyro_feature.common_property, report_id); + gyro_feature.gyro_change_sesnitivity = HID_DEFAULT_SENSITIVITY; + gyro_feature.gyro_sensitivity_min = HID_DEFAULT_MIN_VALUE; + gyro_feature.gyro_sensitivity_max = HID_DEFAULT_MAX_VALUE; + memcpy(feature_report, &gyro_feature, sizeof(gyro_feature)); + report_size = sizeof(gyro_feature); + break; + case MAG_IDX: /* magnetometer */ + get_common_features(&magno_feature.common_property, report_id); + magno_feature.magno_headingchange_sensitivity = HID_DEFAULT_SENSITIVITY; + magno_feature.heading_min = HID_DEFAULT_MIN_VALUE; + magno_feature.heading_max = HID_DEFAULT_MAX_VALUE; + magno_feature.flux_change_sensitivity = HID_DEFAULT_MIN_VALUE; + magno_feature.flux_min = HID_DEFAULT_MIN_VALUE; + magno_feature.flux_max = HID_DEFAULT_MAX_VALUE; + memcpy(feature_report, &magno_feature, sizeof(magno_feature)); + report_size = sizeof(magno_feature); + break; + case ALS_IDX: /* ambient light sensor */ + get_common_features(&als_feature.common_property, report_id); + als_feature.als_change_sesnitivity = HID_DEFAULT_SENSITIVITY; + als_feature.als_sensitivity_min = HID_DEFAULT_MIN_VALUE; + als_feature.als_sensitivity_max = HID_DEFAULT_MAX_VALUE; + memcpy(feature_report, &als_feature, sizeof(als_feature)); + report_size = sizeof(als_feature); + break; + case HPD_IDX: /* human presence detection sensor */ + get_common_features(&hpd_feature.common_property, report_id); + memcpy(feature_report, &hpd_feature, sizeof(hpd_feature)); + report_size = sizeof(hpd_feature); + break; + } + return report_size; +} + +static void get_common_inputs(struct common_input_property *common, int report_id) +{ + common->report_id = report_id; + common->sensor_state = HID_USAGE_SENSOR_STATE_READY_ENUM; + common->event_type = HID_USAGE_SENSOR_EVENT_DATA_UPDATED_ENUM; +} + +static int float_to_int(u32 flt32_val) +{ + int fraction, shift, mantissa, sign, exp, zeropre; + + mantissa = flt32_val & GENMASK(22, 0); + sign = (flt32_val & BIT(31)) ? -1 : 1; + exp = (flt32_val & ~BIT(31)) >> 23; + + if (!exp && !mantissa) + return 0; + + /* + * Calculate the exponent and fraction part of floating + * point representation. + */ + exp -= 127; + if (exp < 0) { + exp = -exp; + if (exp >= BITS_PER_TYPE(u32)) + return 0; + zeropre = (((BIT(23) + mantissa) * 100) >> 23) >> exp; + return zeropre >= 50 ? sign : 0; + } + + shift = 23 - exp; + if (abs(shift) >= BITS_PER_TYPE(u32)) + return 0; + + if (shift < 0) { + shift = -shift; + flt32_val = BIT(exp) + (mantissa << shift); + shift = 0; + } else { + flt32_val = BIT(exp) + (mantissa >> shift); + } + + fraction = (shift == 0) ? 0 : mantissa & GENMASK(shift - 1, 0); + + return (((fraction * 100) >> shift) >= 50) ? sign * (flt32_val + 1) : sign * flt32_val; +} + +static u8 get_input_rep(u8 current_index, int sensor_idx, int report_id, + struct amd_input_data *in_data) +{ + struct amd_mp2_dev *mp2 = container_of(in_data, struct amd_mp2_dev, in_data); + u8 *input_report = in_data->input_report[current_index]; + struct magno_input_report magno_input; + struct accel3_input_report acc_input; + struct gyro_input_report gyro_input; + struct als_input_report als_input; + struct hpd_input_report hpd_input; + struct sfh_accel_data accel_data; + struct sfh_gyro_data gyro_data; + struct sfh_mag_data mag_data; + struct sfh_als_data als_data; + struct hpd_status hpdstatus; + void __iomem *sensoraddr; + u8 report_size = 0; + + if (!input_report) + return report_size; + + switch (sensor_idx) { + case ACCEL_IDX: /* accelerometer */ + sensoraddr = mp2->vsbase + (ACCEL_IDX * SENSOR_DATA_MEM_SIZE_DEFAULT) + + OFFSET_SENSOR_DATA_DEFAULT; + memcpy_fromio(&accel_data, sensoraddr, sizeof(struct sfh_accel_data)); + get_common_inputs(&acc_input.common_property, report_id); + acc_input.in_accel_x_value = float_to_int(accel_data.acceldata.x) / 100; + acc_input.in_accel_y_value = float_to_int(accel_data.acceldata.y) / 100; + acc_input.in_accel_z_value = float_to_int(accel_data.acceldata.z) / 100; + memcpy(input_report, &acc_input, sizeof(acc_input)); + report_size = sizeof(acc_input); + break; + case GYRO_IDX: /* gyroscope */ + sensoraddr = mp2->vsbase + (GYRO_IDX * SENSOR_DATA_MEM_SIZE_DEFAULT) + + OFFSET_SENSOR_DATA_DEFAULT; + memcpy_fromio(&gyro_data, sensoraddr, sizeof(struct sfh_gyro_data)); + get_common_inputs(&gyro_input.common_property, report_id); + gyro_input.in_angel_x_value = float_to_int(gyro_data.gyrodata.x) / 1000; + gyro_input.in_angel_y_value = float_to_int(gyro_data.gyrodata.y) / 1000; + gyro_input.in_angel_z_value = float_to_int(gyro_data.gyrodata.z) / 1000; + memcpy(input_report, &gyro_input, sizeof(gyro_input)); + report_size = sizeof(gyro_input); + break; + case MAG_IDX: /* magnetometer */ + sensoraddr = mp2->vsbase + (MAG_IDX * SENSOR_DATA_MEM_SIZE_DEFAULT) + + OFFSET_SENSOR_DATA_DEFAULT; + memcpy_fromio(&mag_data, sensoraddr, sizeof(struct sfh_mag_data)); + get_common_inputs(&magno_input.common_property, report_id); + magno_input.in_magno_x = float_to_int(mag_data.magdata.x) / 100; + magno_input.in_magno_y = float_to_int(mag_data.magdata.y) / 100; + magno_input.in_magno_z = float_to_int(mag_data.magdata.z) / 100; + magno_input.in_magno_accuracy = mag_data.accuracy / 100; + memcpy(input_report, &magno_input, sizeof(magno_input)); + report_size = sizeof(magno_input); + break; + case ALS_IDX: + sensoraddr = mp2->vsbase + (ALS_IDX * SENSOR_DATA_MEM_SIZE_DEFAULT) + + OFFSET_SENSOR_DATA_DEFAULT; + memcpy_fromio(&als_data, sensoraddr, sizeof(struct sfh_als_data)); + get_common_inputs(&als_input.common_property, report_id); + als_input.illuminance_value = float_to_int(als_data.lux); + report_size = sizeof(als_input); + memcpy(input_report, &als_input, sizeof(als_input)); + break; + case HPD_IDX: + get_common_inputs(&hpd_input.common_property, report_id); + hpdstatus.val = readl(mp2->mmio + AMD_C2P_MSG(4)); + hpd_input.human_presence = hpdstatus.shpd.presence; + report_size = sizeof(hpd_input); + memcpy(input_report, &hpd_input, sizeof(hpd_input)); + break; + } + return report_size; +} + +static u32 get_desc_size(int sensor_idx, int descriptor_name) +{ + switch (sensor_idx) { + case ACCEL_IDX: + switch (descriptor_name) { + case descr_size: + return sizeof(accel3_report_descriptor); + case input_size: + return sizeof(struct accel3_input_report); + case feature_size: + return sizeof(struct accel3_feature_report); + } + break; + case GYRO_IDX: + switch (descriptor_name) { + case descr_size: + return sizeof(gyro3_report_descriptor); + case input_size: + return sizeof(struct gyro_input_report); + case feature_size: + return sizeof(struct gyro_feature_report); + } + break; + case MAG_IDX: + switch (descriptor_name) { + case descr_size: + return sizeof(comp3_report_descriptor); + case input_size: + return sizeof(struct magno_input_report); + case feature_size: + return sizeof(struct magno_feature_report); + } + break; + case ALS_IDX: + switch (descriptor_name) { + case descr_size: + return sizeof(als_report_descriptor); + case input_size: + return sizeof(struct als_input_report); + case feature_size: + return sizeof(struct als_feature_report); + } + break; + case HPD_IDX: + switch (descriptor_name) { + case descr_size: + return sizeof(hpd_report_descriptor); + case input_size: + return sizeof(struct hpd_input_report); + case feature_size: + return sizeof(struct hpd_feature_report); + } + break; + } + + return 0; +} + +void amd_sfh1_1_set_desc_ops(struct amd_mp2_ops *mp2_ops) +{ + mp2_ops->get_rep_desc = get_report_desc; + mp2_ops->get_feat_rep = get_feature_rep; + mp2_ops->get_desc_sz = get_desc_size; + mp2_ops->get_in_rep = get_input_rep; +} |