static int get_driver_path(const char *mod, const char *path, char *buf) {
DIR *dir;
struct dirent *de;
char modpath[SYSFS_PATH_MAX];
int ret = 0;
if ((dir = opendir(path))) {
while ((de = readdir(dir))) {
struct stat sb;
if (de->d_name[0] == '.')
continue;
snprintf(modpath, SYSFS_PATH_MAX, "%s/%s", path, de->d_name);
if (!strcmp(de->d_name, mod)) {
strncpy(buf, modpath, SYSFS_PATH_MAX - 1);
buf[SYSFS_PATH_MAX - 1] = '\0';
ret = 1;
break;
}
if (!stat(modpath, &sb) && (sb.st_mode & S_IFMT) == S_IFDIR)
if ((ret = get_driver_path(mod, modpath, buf)))
break;
}
closedir(dir);
}
return ret;
}
int wifi_load_driver()
{
#ifdef WIFI_DRIVER_MODULE_PATH
char driver_status[PROPERTY_VALUE_MAX];
char modname[PROPERTY_VALUE_MAX];
char modpath[SYSFS_PATH_MAX];
int count = 100; /* wait at most 20 seconds for completion */
if (is_wifi_driver_loaded()) {
return 0;
}
if (!property_get(DRIVER_PATH_PROP, modpath, NULL)) {
property_get(DRIVER_NAME_PROP, modname, NULL);
strcat(modname, ".ko");
if (!get_driver_path(modname, MODULE_DEFAULT_DIR, modpath))
strcpy(modpath, WIFI_DRIVER_MODULE_PATH);
}
ALOGI("got module path %s", modpath);
if (insmod(modpath, DRIVER_MODULE_ARG) < 0)
return -1;
if (strcmp(FIRMWARE_LOADER,"") == 0) {
/* usleep(WIFI_DRIVER_LOADER_DELAY); */
property_set(DRIVER_PROP_NAME, "ok");
}
else {
property_set("ctl.start", FIRMWARE_LOADER);
}
sched_yield();
while (count-- > 0) {
if (property_get(DRIVER_PROP_NAME, driver_status, NULL)) {
if (strcmp(driver_status, "ok") == 0) {
get_driver_info(modname);
return 0;
} else if (strcmp(DRIVER_PROP_NAME, "failed") == 0) {
wifi_unload_driver();
return -1;
}
}
usleep(200000);
}
property_set(DRIVER_PROP_NAME, "timeout");
wifi_unload_driver();
return -1;
#else
property_set(DRIVER_PROP_NAME, "ok");
return 0;
#endif
}
/**
* sysfs_open_driver: open driver by name, given its bus
* @bus_name: Name of the bus
* @drv_name: Name of the driver
* Returns the sysfs_driver reference on success and NULL on failure
*/
struct sysfs_driver *sysfs_open_driver(const char *bus_name,
const char *drv_name)
{
char path[SYSFS_PATH_MAX];
struct sysfs_driver *driver = NULL;
if (!drv_name || !bus_name) {
errno = EINVAL;
return NULL;
}
memset(path, 0, SYSFS_PATH_MAX);
if (get_driver_path(bus_name, drv_name, path, SYSFS_PATH_MAX)) {
dprintf("Error getting to driver %s\n", drv_name);
return NULL;
}
driver = sysfs_open_driver_path(path);
if (!driver) {
dprintf("Error opening driver at %s\n", path);
return NULL;
}
return driver;
}
