summaryrefslogtreecommitdiffstats
path: root/drivers/hid/amd-sfh-hid/sfh1_1/amd_sfh_desc.c
diff options
context:
space:
mode:
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.c316
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;
+}