radio stub HAL.
radio HAL stub implementation to be used for
test or reference.
Change-Id: I83294501d0bc138bcce68eb83296da6f6f4438d3
diff --git a/modules/radio/radio_hw.c b/modules/radio/radio_hw.c
new file mode 100644
index 0000000..b1a4d26
--- /dev/null
+++ b/modules/radio/radio_hw.c
@@ -0,0 +1,726 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "radio_hw_stub"
+#define LOG_NDEBUG 0
+
+#include <string.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <pthread.h>
+#include <sys/prctl.h>
+#include <sys/time.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <cutils/log.h>
+#include <cutils/list.h>
+#include <system/radio.h>
+#include <system/radio_metadata.h>
+#include <hardware/hardware.h>
+#include <hardware/radio.h>
+
+static const radio_hal_properties_t hw_properties = {
+ .class_id = RADIO_CLASS_AM_FM,
+ .implementor = "The Android Open Source Project",
+ .product = "Radio stub HAL",
+ .version = "0.1",
+ .serial = "0123456789",
+ .num_tuners = 1,
+ .num_audio_sources = 1,
+ .supports_capture = false,
+ .num_bands = 2,
+ .bands = {
+ {
+ .type = RADIO_BAND_FM,
+ .antenna_connected = false,
+ .lower_limit = 87900,
+ .upper_limit = 107900,
+ .num_spacings = 1,
+ .spacings = { 200 },
+ .fm = {
+ .deemphasis = RADIO_DEEMPHASIS_75,
+ .stereo = true,
+ .rds = RADIO_RDS_US,
+ .ta = false,
+ .af = false,
+ }
+ },
+ {
+ .type = RADIO_BAND_AM,
+ .antenna_connected = true,
+ .lower_limit = 540,
+ .upper_limit = 1610,
+ .num_spacings = 1,
+ .spacings = { 10 },
+ .am = {
+ .stereo = true,
+ }
+ }
+ }
+};
+
+struct stub_radio_tuner {
+ struct radio_tuner interface;
+ struct stub_radio_device *dev;
+ radio_callback_t callback;
+ void *cookie;
+ radio_hal_band_config_t config;
+ radio_program_info_t program;
+ bool audio;
+ pthread_t callback_thread;
+ pthread_mutex_t lock;
+ pthread_cond_t cond;
+ struct listnode command_list;
+};
+
+struct stub_radio_device {
+ struct radio_hw_device device;
+ struct stub_radio_tuner *tuner;
+ pthread_mutex_t lock;
+};
+
+
+typedef enum {
+ CMD_EXIT,
+ CMD_CONFIG,
+ CMD_STEP,
+ CMD_SCAN,
+ CMD_TUNE,
+ CMD_CANCEL,
+ CMD_METADATA,
+} thread_cmd_type_t;
+
+struct thread_command {
+ struct listnode node;
+ thread_cmd_type_t type;
+ struct timespec ts;
+ union {
+ unsigned int param;
+ radio_hal_band_config_t config;
+ };
+};
+
+/* must be called with out->lock locked */
+static int send_command_l(struct stub_radio_tuner *tuner,
+ thread_cmd_type_t type,
+ unsigned int delay_ms,
+ void *param)
+{
+ struct thread_command *cmd = (struct thread_command *)calloc(1, sizeof(struct thread_command));
+ struct timespec ts;
+
+ if (cmd == NULL)
+ return -ENOMEM;
+
+ ALOGV("%s %d delay_ms %d", __func__, type, delay_ms);
+
+ cmd->type = type;
+ if (param != NULL) {
+ if (cmd->type == CMD_CONFIG) {
+ cmd->config = *(radio_hal_band_config_t *)param;
+ ALOGV("%s CMD_CONFIG type %d", __func__, cmd->config.type);
+ } else
+ cmd->param = *(unsigned int *)param;
+ }
+
+ clock_gettime(CLOCK_REALTIME, &ts);
+
+ ts.tv_sec += delay_ms/1000;
+ ts.tv_nsec += (delay_ms%1000) * 1000000;
+ if (ts.tv_nsec >= 1000000000) {
+ ts.tv_nsec -= 1000000000;
+ ts.tv_sec += 1;
+ }
+ cmd->ts = ts;
+ list_add_tail(&tuner->command_list, &cmd->node);
+ pthread_cond_signal(&tuner->cond);
+ return 0;
+}
+
+#define BITMAP_FILE_PATH "/data/misc/media/android.png"
+
+static int add_bitmap_metadata(radio_metadata_t **metadata, radio_metadata_key_t key,
+ const char *source)
+{
+ int fd;
+ ssize_t ret = 0;
+ struct stat info;
+ void *data = NULL;
+ size_t size;
+
+ fd = open(source, O_RDONLY);
+ if (fd < 0)
+ return -EPIPE;
+
+ fstat(fd, &info);
+ size = info.st_size;
+ data = malloc(size);
+ if (data == NULL) {
+ ret = -ENOMEM;
+ goto exit;
+ }
+ ret = read(fd, data, size);
+ if (ret < 0)
+ goto exit;
+ ret = radio_metadata_add_raw(metadata, key, (const unsigned char *)data, size);
+
+exit:
+ close(fd);
+ free(data);
+ ALOGE_IF(ret != 0, "%s error %d", __func__, ret);
+ return (int)ret;
+}
+
+static int prepare_metadata(struct stub_radio_tuner *tuner,
+ radio_metadata_t **metadata, bool program)
+{
+ int ret = 0;
+ char text[RADIO_STRING_LEN_MAX];
+ struct timespec ts;
+
+ if (metadata == NULL)
+ return -EINVAL;
+
+ if (*metadata != NULL)
+ radio_metadata_deallocate(*metadata);
+
+ *metadata = NULL;
+
+ ret = radio_metadata_allocate(metadata, tuner->program.channel, 0);
+ if (ret != 0)
+ return ret;
+
+ if (program) {
+ ret = radio_metadata_add_int(metadata, RADIO_METADATA_KEY_RBDS_PTY, 5);
+ if (ret != 0)
+ goto exit;
+ ret = radio_metadata_add_text(metadata, RADIO_METADATA_KEY_RDS_PS, "RockBand");
+ if (ret != 0)
+ goto exit;
+ ret = add_bitmap_metadata(metadata, RADIO_METADATA_KEY_ICON, BITMAP_FILE_PATH);
+ if (ret != 0)
+ goto exit;
+ } else {
+ ret = add_bitmap_metadata(metadata, RADIO_METADATA_KEY_ART, BITMAP_FILE_PATH);
+ if (ret != 0)
+ goto exit;
+ }
+
+ clock_gettime(CLOCK_REALTIME, &ts);
+ snprintf(text, RADIO_STRING_LEN_MAX, "Artist %ld", ts.tv_sec % 10);
+ ret = radio_metadata_add_text(metadata, RADIO_METADATA_KEY_ARTIST, text);
+ if (ret != 0)
+ goto exit;
+
+ snprintf(text, RADIO_STRING_LEN_MAX, "Song %ld", ts.tv_nsec % 10);
+ ret = radio_metadata_add_text(metadata, RADIO_METADATA_KEY_TITLE, text);
+ if (ret != 0)
+ goto exit;
+
+ return 0;
+
+exit:
+ radio_metadata_deallocate(*metadata);
+ *metadata = NULL;
+ return ret;
+}
+
+static void *callback_thread_loop(void *context)
+{
+ struct stub_radio_tuner *tuner = (struct stub_radio_tuner *)context;
+ struct timespec ts = {0, 0};
+
+ ALOGI("%s", __func__);
+
+ prctl(PR_SET_NAME, (unsigned long)"sound trigger callback", 0, 0, 0);
+
+ pthread_mutex_lock(&tuner->lock);
+
+ while (true) {
+ struct thread_command *cmd = NULL;
+ struct listnode *item;
+ struct listnode *tmp;
+ struct timespec cur_ts;
+
+ if (list_empty(&tuner->command_list) || ts.tv_sec != 0) {
+ ALOGV("%s SLEEPING", __func__);
+ if (ts.tv_sec != 0) {
+ ALOGV("%s SLEEPING with timeout", __func__);
+ pthread_cond_timedwait(&tuner->cond, &tuner->lock, &ts);
+ } else {
+ ALOGV("%s SLEEPING forever", __func__);
+ pthread_cond_wait(&tuner->cond, &tuner->lock);
+ }
+ ts.tv_sec = 0;
+ ALOGV("%s RUNNING", __func__);
+ }
+
+ clock_gettime(CLOCK_REALTIME, &cur_ts);
+
+ list_for_each_safe(item, tmp, &tuner->command_list) {
+ cmd = node_to_item(item, struct thread_command, node);
+
+ if ((cmd->ts.tv_sec < cur_ts.tv_sec) ||
+ ((cmd->ts.tv_sec == cur_ts.tv_sec) && (cmd->ts.tv_nsec < cur_ts.tv_nsec))) {
+ radio_hal_event_t event;
+
+ event.type = RADIO_EVENT_HW_FAILURE;
+ list_remove(item);
+
+ ALOGV("%s processing command %d time %ld.%ld", __func__, cmd->type, cmd->ts.tv_sec,
+ cmd->ts.tv_nsec);
+
+ switch (cmd->type) {
+ default:
+ case CMD_EXIT:
+ free(cmd);
+ goto exit;
+
+ case CMD_CONFIG: {
+ tuner->config = cmd->config;
+ event.type = RADIO_EVENT_CONFIG;
+ event.config = tuner->config;
+ ALOGV("%s CMD_CONFIG type %d low %d up %d",
+ __func__, tuner->config.type,
+ tuner->config.lower_limit, tuner->config.upper_limit);
+ if (tuner->config.type == RADIO_BAND_FM) {
+ ALOGV(" - stereo %d\n - rds %d\n - ta %d\n - af %d",
+ tuner->config.fm.stereo, tuner->config.fm.rds,
+ tuner->config.fm.ta, tuner->config.fm.af);
+ } else {
+ ALOGV(" - stereo %d", tuner->config.am.stereo);
+ }
+ } break;
+
+ case CMD_STEP: {
+ int frequency;
+ frequency = tuner->program.channel;
+ if (cmd->param == RADIO_DIRECTION_UP) {
+ frequency += tuner->config.spacings[0];
+ } else {
+ frequency -= tuner->config.spacings[0];
+ }
+ if (frequency > (int)tuner->config.upper_limit) {
+ frequency = tuner->config.lower_limit;
+ }
+ if (frequency < (int)tuner->config.lower_limit) {
+ frequency = tuner->config.upper_limit;
+ }
+ tuner->program.channel = frequency;
+ tuner->program.tuned = (frequency / (tuner->config.spacings[0] * 5)) % 2;
+ tuner->program.signal_strength = 20;
+ if (tuner->config.type == RADIO_BAND_FM)
+ tuner->program.stereo = false;
+ else
+ tuner->program.stereo = false;
+
+ event.type = RADIO_EVENT_TUNED;
+ event.info = tuner->program;
+ } break;
+
+ case CMD_SCAN: {
+ int frequency;
+ frequency = tuner->program.channel;
+ if (cmd->param == RADIO_DIRECTION_UP) {
+ frequency += tuner->config.spacings[0] * 25;
+ } else {
+ frequency -= tuner->config.spacings[0] * 25;
+ }
+ if (frequency > (int)tuner->config.upper_limit) {
+ frequency = tuner->config.lower_limit;
+ }
+ if (frequency < (int)tuner->config.lower_limit) {
+ frequency = tuner->config.upper_limit;
+ }
+ tuner->program.channel = (unsigned int)frequency;
+ tuner->program.tuned = true;
+ if (tuner->config.type == RADIO_BAND_FM)
+ tuner->program.stereo = tuner->config.fm.stereo;
+ else
+ tuner->program.stereo = tuner->config.am.stereo;
+ tuner->program.signal_strength = 50;
+
+ event.type = RADIO_EVENT_TUNED;
+ event.info = tuner->program;
+ if (tuner->program.metadata != NULL)
+ radio_metadata_deallocate(tuner->program.metadata);
+ tuner->program.metadata = NULL;
+ send_command_l(tuner, CMD_METADATA, 2000, NULL);
+ } break;
+
+ case CMD_TUNE: {
+ tuner->program.channel = cmd->param;
+ tuner->program.tuned = (tuner->program.channel /
+ (tuner->config.spacings[0] * 5)) % 2;
+
+ if (tuner->program.tuned) {
+ prepare_metadata(tuner, &tuner->program.metadata, true);
+ send_command_l(tuner, CMD_METADATA, 5000, NULL);
+ } else {
+ if (tuner->program.metadata != NULL)
+ radio_metadata_deallocate(tuner->program.metadata);
+ tuner->program.metadata = NULL;
+ }
+ tuner->program.signal_strength = 100;
+ if (tuner->config.type == RADIO_BAND_FM)
+ tuner->program.stereo =
+ tuner->program.tuned ? tuner->config.fm.stereo : false;
+ else
+ tuner->program.stereo =
+ tuner->program.tuned ? tuner->config.am.stereo : false;
+ event.type = RADIO_EVENT_TUNED;
+ event.info = tuner->program;
+ } break;
+
+ case CMD_METADATA: {
+ prepare_metadata(tuner, &tuner->program.metadata, false);
+ event.type = RADIO_EVENT_METADATA;
+ event.metadata = tuner->program.metadata;
+ } break;
+
+ case CMD_CANCEL: {
+ struct listnode *tmp2;
+ list_for_each_safe(item, tmp2, &tuner->command_list) {
+ cmd = node_to_item(item, struct thread_command, node);
+ if (cmd->type == CMD_STEP || cmd->type == CMD_SCAN ||
+ cmd->type == CMD_TUNE || cmd->type == CMD_METADATA) {
+ list_remove(item);
+ free(cmd);
+ }
+ }
+ } break;
+
+ }
+ if (event.type != RADIO_EVENT_HW_FAILURE && tuner->callback != NULL) {
+ pthread_mutex_unlock(&tuner->lock);
+ tuner->callback(&event, tuner->cookie);
+ pthread_mutex_lock(&tuner->lock);
+ }
+ ALOGV("%s processed command %d", __func__, cmd->type);
+ free(cmd);
+ } else {
+ if ((ts.tv_sec == 0) ||
+ (cmd->ts.tv_sec < ts.tv_sec) ||
+ ((cmd->ts.tv_sec == ts.tv_sec) && (cmd->ts.tv_nsec < ts.tv_nsec))) {
+ ts.tv_sec = cmd->ts.tv_sec;
+ ts.tv_nsec = cmd->ts.tv_nsec;
+ }
+ }
+ }
+ }
+
+exit:
+ pthread_mutex_unlock(&tuner->lock);
+
+ ALOGV("%s Exiting", __func__);
+
+ return NULL;
+}
+
+
+static int tuner_set_configuration(const struct radio_tuner *tuner,
+ const radio_hal_band_config_t *config)
+{
+ struct stub_radio_tuner *stub_tuner = (struct stub_radio_tuner *)tuner;
+ int status = 0;
+
+ ALOGI("%s stub_tuner %p", __func__, stub_tuner);
+ pthread_mutex_lock(&stub_tuner->lock);
+ if (config == NULL) {
+ status = -EINVAL;
+ goto exit;
+ }
+ send_command_l(stub_tuner, CMD_CANCEL, 0, NULL);
+ send_command_l(stub_tuner, CMD_CONFIG, 500, (void *)config);
+
+exit:
+ pthread_mutex_unlock(&stub_tuner->lock);
+ return status;
+}
+
+static int tuner_get_configuration(const struct radio_tuner *tuner,
+ radio_hal_band_config_t *config)
+{
+ struct stub_radio_tuner *stub_tuner = (struct stub_radio_tuner *)tuner;
+ int status = 0;
+ struct listnode *item;
+ radio_hal_band_config_t *src_config;
+
+ ALOGI("%s stub_tuner %p", __func__, stub_tuner);
+ pthread_mutex_lock(&stub_tuner->lock);
+ src_config = &stub_tuner->config;
+
+ if (config == NULL) {
+ status = -EINVAL;
+ goto exit;
+ }
+ list_for_each(item, &stub_tuner->command_list) {
+ struct thread_command *cmd = node_to_item(item, struct thread_command, node);
+ if (cmd->type == CMD_CONFIG) {
+ src_config = &cmd->config;
+ }
+ }
+ *config = *src_config;
+
+exit:
+ pthread_mutex_unlock(&stub_tuner->lock);
+ return status;
+}
+
+static int tuner_step(const struct radio_tuner *tuner,
+ radio_direction_t direction, bool skip_sub_channel)
+{
+ struct stub_radio_tuner *stub_tuner = (struct stub_radio_tuner *)tuner;
+
+ ALOGI("%s stub_tuner %p direction %d, skip_sub_channel %d",
+ __func__, stub_tuner, direction, skip_sub_channel);
+
+ pthread_mutex_lock(&stub_tuner->lock);
+ send_command_l(stub_tuner, CMD_STEP, 20, &direction);
+ pthread_mutex_unlock(&stub_tuner->lock);
+ return 0;
+}
+
+static int tuner_scan(const struct radio_tuner *tuner,
+ radio_direction_t direction, bool skip_sub_channel)
+{
+ struct stub_radio_tuner *stub_tuner = (struct stub_radio_tuner *)tuner;
+
+ ALOGI("%s stub_tuner %p direction %d, skip_sub_channel %d",
+ __func__, stub_tuner, direction, skip_sub_channel);
+
+ pthread_mutex_lock(&stub_tuner->lock);
+ send_command_l(stub_tuner, CMD_SCAN, 200, &direction);
+ pthread_mutex_unlock(&stub_tuner->lock);
+ return 0;
+}
+
+static int tuner_tune(const struct radio_tuner *tuner,
+ unsigned int channel, unsigned int sub_channel)
+{
+ struct stub_radio_tuner *stub_tuner = (struct stub_radio_tuner *)tuner;
+
+ ALOGI("%s stub_tuner %p channel %d, sub_channel %d",
+ __func__, stub_tuner, channel, sub_channel);
+
+ pthread_mutex_lock(&stub_tuner->lock);
+ if (channel < stub_tuner->config.lower_limit || channel > stub_tuner->config.upper_limit) {
+ pthread_mutex_unlock(&stub_tuner->lock);
+ ALOGI("%s channel out of range", __func__);
+ return -EINVAL;
+ }
+ send_command_l(stub_tuner, CMD_TUNE, 100, &channel);
+ pthread_mutex_unlock(&stub_tuner->lock);
+ return 0;
+}
+
+static int tuner_cancel(const struct radio_tuner *tuner)
+{
+ struct stub_radio_tuner *stub_tuner = (struct stub_radio_tuner *)tuner;
+
+ ALOGI("%s stub_tuner %p", __func__, stub_tuner);
+
+ pthread_mutex_lock(&stub_tuner->lock);
+ send_command_l(stub_tuner, CMD_CANCEL, 0, NULL);
+ pthread_mutex_unlock(&stub_tuner->lock);
+ return 0;
+}
+
+static int tuner_get_program_information(const struct radio_tuner *tuner,
+ radio_program_info_t *info)
+{
+ struct stub_radio_tuner *stub_tuner = (struct stub_radio_tuner *)tuner;
+ int status = 0;
+ radio_metadata_t *metadata;
+
+ ALOGI("%s stub_tuner %p", __func__, stub_tuner);
+ pthread_mutex_lock(&stub_tuner->lock);
+ if (info == NULL) {
+ status = -EINVAL;
+ goto exit;
+ }
+ metadata = info->metadata;
+ *info = stub_tuner->program;
+ info->metadata = metadata;
+ if (metadata != NULL)
+ radio_metadata_add_metadata(&info->metadata, stub_tuner->program.metadata);
+
+exit:
+ pthread_mutex_unlock(&stub_tuner->lock);
+ return status;
+}
+
+static int rdev_get_properties(const struct radio_hw_device *dev,
+ radio_hal_properties_t *properties)
+{
+ struct stub_radio_device *rdev = (struct stub_radio_device *)dev;
+
+ ALOGI("%s", __func__);
+ if (properties == NULL)
+ return -EINVAL;
+ memcpy(properties, &hw_properties, sizeof(radio_hal_properties_t));
+ return 0;
+}
+
+static int rdev_open_tuner(const struct radio_hw_device *dev,
+ const radio_hal_band_config_t *config,
+ bool audio,
+ radio_callback_t callback,
+ void *cookie,
+ const struct radio_tuner **tuner)
+{
+ struct stub_radio_device *rdev = (struct stub_radio_device *)dev;
+ int status = 0;
+
+ ALOGI("%s rdev %p", __func__, rdev);
+ pthread_mutex_lock(&rdev->lock);
+
+ if (rdev->tuner != NULL) {
+ status = -ENOSYS;
+ goto exit;
+ }
+
+ if (config == NULL || callback == NULL || tuner == NULL) {
+ status = -EINVAL;
+ goto exit;
+ }
+
+ rdev->tuner = (struct stub_radio_tuner *)calloc(1, sizeof(struct stub_radio_tuner));
+ if (rdev->tuner == NULL) {
+ status = -ENOMEM;
+ goto exit;
+ }
+
+ rdev->tuner->interface.set_configuration = tuner_set_configuration;
+ rdev->tuner->interface.get_configuration = tuner_get_configuration;
+ rdev->tuner->interface.scan = tuner_scan;
+ rdev->tuner->interface.step = tuner_step;
+ rdev->tuner->interface.tune = tuner_tune;
+ rdev->tuner->interface.cancel = tuner_cancel;
+ rdev->tuner->interface.get_program_information = tuner_get_program_information;
+
+ rdev->tuner->audio = audio;
+ rdev->tuner->callback = callback;
+ rdev->tuner->cookie = cookie;
+
+ rdev->tuner->dev = rdev;
+
+ pthread_mutex_init(&rdev->tuner->lock, (const pthread_mutexattr_t *) NULL);
+ pthread_cond_init(&rdev->tuner->cond, (const pthread_condattr_t *) NULL);
+ pthread_create(&rdev->tuner->callback_thread, (const pthread_attr_t *) NULL,
+ callback_thread_loop, rdev->tuner);
+ list_init(&rdev->tuner->command_list);
+
+ pthread_mutex_lock(&rdev->tuner->lock);
+ send_command_l(rdev->tuner, CMD_CONFIG, 500, (void *)config);
+ pthread_mutex_unlock(&rdev->tuner->lock);
+
+ *tuner = &rdev->tuner->interface;
+
+exit:
+ pthread_mutex_unlock(&rdev->lock);
+ ALOGI("%s DONE", __func__);
+ return status;
+}
+
+static int rdev_close_tuner(const struct radio_hw_device *dev,
+ const struct radio_tuner *tuner)
+{
+ struct stub_radio_device *rdev = (struct stub_radio_device *)dev;
+ struct stub_radio_tuner *stub_tuner = (struct stub_radio_tuner *)tuner;
+ int status = 0;
+
+ ALOGI("%s tuner %p", __func__, tuner);
+ pthread_mutex_lock(&rdev->lock);
+
+ if (tuner == NULL) {
+ status = -EINVAL;
+ goto exit;
+ }
+
+ pthread_mutex_lock(&stub_tuner->lock);
+ stub_tuner->callback = NULL;
+ send_command_l(stub_tuner, CMD_EXIT, 0, NULL);
+ pthread_mutex_unlock(&stub_tuner->lock);
+ pthread_join(stub_tuner->callback_thread, (void **) NULL);
+
+ if (stub_tuner->program.metadata != NULL)
+ radio_metadata_deallocate(stub_tuner->program.metadata);
+
+ free(stub_tuner);
+ rdev->tuner = NULL;
+
+exit:
+ pthread_mutex_unlock(&rdev->lock);
+ return status;
+}
+
+static int rdev_close(hw_device_t *device)
+{
+ struct stub_radio_device *rdev = (struct stub_radio_device *)device;
+ if (rdev != NULL) {
+ free(rdev->tuner);
+ }
+ free(rdev);
+ return 0;
+}
+
+static int rdev_open(const hw_module_t* module, const char* name,
+ hw_device_t** device)
+{
+ struct stub_radio_device *rdev;
+ int ret;
+
+ if (strcmp(name, RADIO_HARDWARE_DEVICE) != 0)
+ return -EINVAL;
+
+ rdev = calloc(1, sizeof(struct stub_radio_device));
+ if (!rdev)
+ return -ENOMEM;
+
+ rdev->device.common.tag = HARDWARE_DEVICE_TAG;
+ rdev->device.common.version = RADIO_DEVICE_API_VERSION_1_0;
+ rdev->device.common.module = (struct hw_module_t *) module;
+ rdev->device.common.close = rdev_close;
+ rdev->device.get_properties = rdev_get_properties;
+ rdev->device.open_tuner = rdev_open_tuner;
+ rdev->device.close_tuner = rdev_close_tuner;
+
+ pthread_mutex_init(&rdev->lock, (const pthread_mutexattr_t *) NULL);
+
+ *device = &rdev->device.common;
+
+ return 0;
+}
+
+
+static struct hw_module_methods_t hal_module_methods = {
+ .open = rdev_open,
+};
+
+struct radio_module HAL_MODULE_INFO_SYM = {
+ .common = {
+ .tag = HARDWARE_MODULE_TAG,
+ .module_api_version = RADIO_MODULE_API_VERSION_1_0,
+ .hal_api_version = HARDWARE_HAL_API_VERSION,
+ .id = RADIO_HARDWARE_MODULE_ID,
+ .name = "Stub radio HAL",
+ .author = "The Android Open Source Project",
+ .methods = &hal_module_methods,
+ },
+};