diff --git a/include/hardware/gnss-base.h b/include/hardware/gnss-base.h
new file mode 100644
index 0000000..afeb834
--- /dev/null
+++ b/include/hardware/gnss-base.h
@@ -0,0 +1,267 @@
+// This file is autogenerated by hidl-gen. Do not edit manually.
+// Source: android.hardware.gnss@1.0
+
+#ifndef HIDL_GENERATED_ANDROID_HARDWARE_GNSS_V1_0_EXPORTED_CONSTANTS_H_
+#define HIDL_GENERATED_ANDROID_HARDWARE_GNSS_V1_0_EXPORTED_CONSTANTS_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+enum {
+    GNSS_MAX_SVS_COUNT = 64u, // 64
+};
+
+enum {
+    GNSS_CONSTELLATION_UNKNOWN = 0,
+    GNSS_CONSTELLATION_GPS = 1,
+    GNSS_CONSTELLATION_SBAS = 2,
+    GNSS_CONSTELLATION_GLONASS = 3,
+    GNSS_CONSTELLATION_QZSS = 4,
+    GNSS_CONSTELLATION_BEIDOU = 5,
+    GNSS_CONSTELLATION_GALILEO = 6,
+};
+
+enum {
+    GPS_LOCATION_HAS_LAT_LONG = 1, // 0x0001
+    GPS_LOCATION_HAS_ALTITUDE = 2, // 0x0002
+    GPS_LOCATION_HAS_SPEED = 4, // 0x0004
+    GPS_LOCATION_HAS_BEARING = 8, // 0x0008
+    GPS_LOCATION_HAS_ACCURACY = 16, // 0x0010
+};
+
+enum {
+    APN_IP_INVALID = 0,
+    APN_IP_IPV4 = 1,
+    APN_IP_IPV6 = 2,
+    APN_IP_IPV4V6 = 3,
+};
+
+enum {
+    AGPS_TYPE_SUPL = 1,
+    AGPS_TYPE_C2K = 2,
+};
+
+enum {
+    GNSS_REQUEST_AGNSS_DATA_CONN = 1,
+    GNSS_RELEASE_AGNSS_DATA_CONN = 2,
+    GNSS_AGNSS_DATA_CONNECTED = 3,
+    GNSS_AGNSS_DATA_CONN_DONE = 4,
+    GNSS_AGNSS_DATA_CONN_FAILED = 5,
+};
+
+enum {
+    AGPS_SETID_TYPE_NONE = 0,
+    AGPS_SETID_TYPE_IMSI = 1,
+    AGPS_SETID_TYPE_MSISDM = 2,
+};
+
+enum {
+    AGPS_RIL_NETWORK_TYPE_MOBILE = 0,
+    AGPS_RIL_NETWORK_TYPE_WIFI = 1,
+    AGPS_RIL_NETWORK_TYPE_MMS = 2,
+    AGPS_RIL_NETWORK_TYPE_SUPL = 3,
+    AGPS_RIL_NETWORK_TYPE_DUN = 4,
+    AGPS_RIL_NETWORK_TYPE_HIPRI = 5,
+    AGPS_RIL_NETWORK_TYPE_WIMAX = 6,
+};
+
+enum {
+    AGPS_REF_LOCATION_TYPE_GSM_CELLID = 1,
+    AGPS_REF_LOCATION_TYPE_UMTS_CELLID = 2,
+    AGPS_REF_LOCATION_TYPE_LTE_CELLID = 4,
+};
+
+enum {
+    AGPS_RIL_REQUEST_SETID_IMSI = 1u, // (1 << 0L)
+    AGPS_RIL_REQUEST_SETID_MSISDN = 2u, // (1 << 1L)
+};
+
+enum {
+    GPS_POSITION_MODE_STANDALONE = 0,
+    GPS_POSITION_MODE_MS_BASED = 1,
+    GPS_POSITION_MODE_MS_ASSISTED = 2,
+};
+
+enum {
+    GPS_POSITION_RECURRENCE_PERIODIC = 0u, // 0
+    GPS_POSITION_RECURRENCE_SINGLE = 1u, // 1
+};
+
+enum {
+    GPS_DELETE_EPHEMERIS = 1, // 0x0001
+    GPS_DELETE_ALMANAC = 2, // 0x0002
+    GPS_DELETE_POSITION = 4, // 0x0004
+    GPS_DELETE_TIME = 8, // 0x0008
+    GPS_DELETE_IONO = 16, // 0x0010
+    GPS_DELETE_UTC = 32, // 0x0020
+    GPS_DELETE_HEALTH = 64, // 0x0040
+    GPS_DELETE_SVDIR = 128, // 0x0080
+    GPS_DELETE_SVSTEER = 256, // 0x0100
+    GPS_DELETE_SADATA = 512, // 0x0200
+    GPS_DELETE_RTI = 1024, // 0x0400
+    GPS_DELETE_CELLDB_INFO = 32768, // 0x8000
+    GPS_DELETE_ALL = 65535, // 0xFFFF
+};
+
+enum {
+    FLP_BATCH_WAKEUP_ON_FIFO_FULL = 1, // 0x01
+};
+
+enum {
+    GPS_CAPABILITY_SCHEDULING = 1u, // (1 << 0)
+    GPS_CAPABILITY_MSB = 2u, // (1 << 1)
+    GPS_CAPABILITY_MSA = 4u, // (1 << 2)
+    GPS_CAPABILITY_SINGLE_SHOT = 8u, // (1 << 3)
+    GPS_CAPABILITY_ON_DEMAND_TIME = 16u, // (1 << 4)
+    GPS_CAPABILITY_GEOFENCING = 32u, // (1 << 5)
+    GPS_CAPABILITY_MEASUREMENTS = 64u, // (1 << 6)
+    GPS_CAPABILITY_NAV_MESSAGES = 128u, // (1 << 7)
+};
+
+enum {
+    GPS_STATUS_NONE = 0,
+    GPS_STATUS_SESSION_BEGIN = 1,
+    GPS_STATUS_SESSION_END = 2,
+    GPS_STATUS_ENGINE_ON = 3,
+    GPS_STATUS_ENGINE_OFF = 4,
+};
+
+enum {
+    GNSS_SV_FLAGS_NONE = 0,
+    GNSS_SV_FLAGS_HAS_EPHEMERIS_DATA = 1, // (1 << 0)
+    GNSS_SV_FLAGS_HAS_ALMANAC_DATA = 2, // (1 << 1)
+    GNSS_SV_FLAGS_USED_IN_FIX = 4, // (1 << 2)
+};
+
+enum {
+    GPS_GEOFENCE_ENTERED = 1, // (1 << 0L)
+    GPS_GEOFENCE_EXITED = 2, // (1 << 1L)
+    GPS_GEOFENCE_UNCERTAIN = 4, // (1 << 2L)
+};
+
+enum {
+    GPS_GEOFENCE_UNAVAILABLE = 1, // (1 << 0L)
+    GPS_GEOFENCE_AVAILABLE = 2, // (1 << 1L)
+};
+
+enum {
+    GPS_GEOFENCE_OPERATION_SUCCESS = 0,
+    GPS_GEOFENCE_ERROR_TOO_MANY_GEOFENCES = -100, // (-100)
+    GPS_GEOFENCE_ERROR_ID_EXISTS = -101, // (-101)
+    GPS_GEOFENCE_ERROR_ID_UNKNOWN = -102, // (-102)
+    GPS_GEOFENCE_ERROR_INVALID_TRANSITION = -103, // (-103)
+    GPS_GEOFENCE_ERROR_GENERIC = -149, // (-149)
+};
+
+enum {
+    GPS_MEASUREMENT_SUCCESS = 0,
+    GPS_MEASUREMENT_ERROR_ALREADY_INIT = -100, // (-100)
+    GPS_MEASUREMENT_ERROR_GENERIC = -101, // (-101)
+};
+
+enum {
+    GNSS_CLOCK_HAS_LEAP_SECOND = 1, // (1 << 0)
+    GNSS_CLOCK_HAS_TIME_UNCERTAINTY = 2, // (1 << 1)
+    GNSS_CLOCK_HAS_FULL_BIAS = 4, // (1 << 2)
+    GNSS_CLOCK_HAS_BIAS = 8, // (1 << 3)
+    GNSS_CLOCK_HAS_BIAS_UNCERTAINTY = 16, // (1 << 4)
+    GNSS_CLOCK_HAS_DRIFT = 32, // (1 << 5)
+    GNSS_CLOCK_HAS_DRIFT_UNCERTAINTY = 64, // (1 << 6)
+};
+
+enum {
+    GNSS_MEASUREMENT_HAS_SNR = 1u, // (1 << 0)
+    GNSS_MEASUREMENT_HAS_CARRIER_FREQUENCY = 512u, // (1 << 9)
+    GNSS_MEASUREMENT_HAS_CARRIER_CYCLES = 1024u, // (1 << 10)
+    GNSS_MEASUREMENT_HAS_CARRIER_PHASE = 2048u, // (1 << 11)
+    GNSS_MEASUREMENT_HAS_CARRIER_PHASE_UNCERTAINTY = 4096u, // (1 << 12)
+};
+
+enum {
+    GNSS_MULTIPATH_INDICATOR_UNKNOWN = 0,
+    GNSS_MULTIPATH_INDICATOR_PRESENT = 1,
+    GNSS_MULTIPATH_INDICATIOR_NOT_PRESENT = 2,
+};
+
+enum {
+    GNSS_MEASUREMENT_STATE_UNKNOWN = 0u, // 0
+    GNSS_MEASUREMENT_STATE_CODE_LOCK = 1u, // (1 << 0)
+    GNSS_MEASUREMENT_STATE_BIT_SYNC = 2u, // (1 << 1)
+    GNSS_MEASUREMENT_STATE_SUBFRAME_SYNC = 4u, // (1 << 2)
+    GNSS_MEASUREMENT_STATE_TOW_DECODED = 8u, // (1 << 3)
+    GNSS_MEASUREMENT_STATE_MSEC_AMBIGUOUS = 16u, // (1 << 4)
+    GNSS_MEASUREMENT_STATE_SYMBOL_SYNC = 32u, // (1 << 5)
+    GNSS_MEASUREMENT_STATE_GLO_STRING_SYNC = 64u, // (1 << 6)
+    GNSS_MEASUREMENT_STATE_GLO_TOD_DECODED = 128u, // (1 << 7)
+    GNSS_MEASUREMENT_STATE_BDS_D2_BIT_SYNC = 256u, // (1 << 8)
+    GNSS_MEASUREMENT_STATE_BDS_D2_SUBFRAME_SYNC = 512u, // (1 << 9)
+    GNSS_MEASUREMENT_STATE_GAL_E1BC_CODE_LOCK = 1024u, // (1 << 10)
+    GNSS_MEASUREMENT_STATE_GAL_E1C_2ND_CODE_LOCK = 2048u, // (1 << 11)
+    GNSS_MEASUREMENT_STATE_GAL_E1B_PAGE_SYNC = 4096u, // (1 << 12)
+    GNSS_MEASUREMENT_STATE_SBAS_SYNC = 8192u, // (1 << 13)
+};
+
+enum {
+    GNSS_ADR_STATE_UNKNOWN = 0,
+    GNSS_ADR_STATE_VALID = 1, // (1 << 0)
+    GNSS_ADR_STATE_RESET = 2, // (1 << 1)
+    GNSS_ADR_STATE_CYCLE_SLIP = 4, // (1 << 2)
+};
+
+enum {
+    GPS_NAVIGATION_MESSAGE_SUCCESS = 0,
+    GPS_NAVIGATION_MESSAGE_ERROR_ALREADY_INIT = -100, // (-100)
+    GPS_NAVIGATION_MESSAGE_ERROR_GENERIC = -101, // (-101)
+};
+
+enum {
+    GNSS_NAVIGATION_MESSAGE_TYPE_UNKNOWN = 0,
+    GNSS_NAVIGATION_MESSAGE_TYPE_GNSS_L1CA = 257, // 0x0101
+    GNSS_NAVIGATION_MESSAGE_TYPE_GNSS_L2CNAV = 258, // 0x0102
+    GNSS_NAVIGATION_MESSAGE_TYPE_GNSS_L5CNAV = 259, // 0x0103
+    GNSS_NAVIGATION_MESSAGE_TYPE_GNSS_CNAV2 = 260, // 0x0104
+    GNSS_NAVIGATION_MESSAGE_TYPE_GLO_L1CA = 769, // 0x0301
+    GNSS_NAVIGATION_MESSAGE_TYPE_BDS_D1 = 1281, // 0x0501
+    GNSS_NAVIGATION_MESSAGE_TYPE_BDS_D2 = 1282, // 0x0502
+    GNSS_NAVIGATION_MESSAGE_TYPE_GAL_I = 1537, // 0x0601
+    GNSS_NAVIGATION_MESSAGE_TYPE_GAL_F = 1538, // 0x0602
+};
+
+typedef enum {
+    NAV_MESSAGE_STATUS_PARITY_PASSED = 1, // (1 << 0)
+    NAV_MESSAGE_STATUS_PARITY_REBUILT = 2, // (1 << 1)
+    NAV_MESSAGE_STATUS_UNKNOWN = 0,
+} navigation_message_status;
+
+enum {
+    GPS_NI_TYPE_VOICE = 1,
+    GPS_NI_TYPE_UMTS_SUPL = 2,
+    GPS_NI_TYPE_UMTS_CTRL_PLANE = 3,
+};
+
+enum {
+    GPS_NI_NEED_NOTIFY = 1u, // 0x0001
+    GPS_NI_NEED_VERIFY = 2u, // 0x0002
+    GPS_NI_PRIVACY_OVERRIDE = 4u, // 0x0004
+};
+
+enum {
+    GPS_NI_RESPONSE_ACCEPT = 1,
+    GPS_NI_RESPONSE_DENY = 2,
+    GPS_NI_RESPONSE_NORESP = 3,
+};
+
+enum {
+    GPS_ENC_NONE = 0,
+    GPS_ENC_SUPL_GSM_DEFAULT = 1,
+    GPS_ENC_SUPL_UTF8 = 2,
+    GPS_ENC_SUPL_UCS2 = 3,
+    GPS_ENC_UNKNOWN = -1, // (-1)
+};
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif  // HIDL_GENERATED_ANDROID_HARDWARE_GNSS_V1_0_EXPORTED_CONSTANTS_H_