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whyred: fingerprint: Load goodix HAL if loading the fpc HAL fails

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Change-Id: I5d45d1c655e69c34de16e6813eee80b07d30dda9
This commit is contained in:
Christopher R. Palmer 2017-01-09 05:35:05 -05:00 • committed by Vasishath Kaushal
parent fd644c012f
commit 29fa5da482
1 changed files with 28 additions and 9 deletions
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37
fingerprint/FingerprintWrapper.cpp
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@ -38,18 +38,37 @@ static union {
const hw_module_t *hw_module;
} vendor;
static bool ensure_vendor_module_is_loaded(void)
static bool try_hal(const char *class_name, const char *device_name)
{
const hw_module_t *module;
int rv = hw_get_module_by_class("fingerprint", class_name, &module);
if (rv) {
ALOGE("Failed to open fingerprint module: class %s, error %d", class_name, rv);
vendor.module = NULL;
} else {
hw_device_t *device;
ALOGI("loaded fingerprint module, class %s: %s version %x", class_name, module->name,
module->module_api_version);
if (module->methods->open(module, device_name, &device) == 0) {
device->close(device);
ALOGI("Successfully loaded the device for fingerprint module, class %s", class_name);
vendor.hw_module = module;
} else {
ALOGE("Failed to open a device using fingerprint HAL, class %s", class_name);
}
}
return vendor.module != NULL;
}
static bool ensure_vendor_module_is_loaded(const char *device_name)
{
android::Mutex::Autolock lock(vendor_mutex);
if (!vendor.module) {
int rv = hw_get_module_by_class("fingerprint", "vendor", &vendor.hw_module);
if (rv) {
ALOGE("failed to open vendor module, error %d", rv);
vendor.module = NULL;
} else {
ALOGI("loaded vendor module: %s version %x", vendor.module->common.name,
vendor.module->common.module_api_version);
if (!try_hal("fpc", device_name)) {
try_hal("goodix", device_name);
}
}
@ -140,7 +159,7 @@ static int device_open(const hw_module_t *module, const char *name, hw_device_t
int rv;
device_t *device;
if (!ensure_vendor_module_is_loaded()) {
if (!ensure_vendor_module_is_loaded(name)) {
return -EINVAL;
}