status_t HOST_Init(void *host)
{
sdif_transfer_callback_t sdifCallback = {0};
sdif_host_t *sdifHost = (sdif_host_t *)host;
/* Sets callback in host driver. */
EVENT_InitTimer();
/* Initialize SDIF. */
sdifHost->config.endianMode = kHOST_EndianModeLittle;
sdifHost->config.responseTimeout = 0xFFU;
sdifHost->config.cardDetDebounce_Clock = 0xFFFFFFU;
sdifHost->config.dataTimeout = 0xFFFFFFU;
SDIF_Init(sdifHost->base, &(sdifHost->config));
/* Set callback for SDHC driver. */
sdifCallback.TransferComplete = SDIF_TransferCompleteCallback;
/* Create handle for SDHC driver */
SDIF_TransferCreateHandle(sdifHost->base, &g_sdifHandle, &sdifCallback, NULL);
/* Create transfer complete event. */
if (false == EVENT_Create(kEVENT_TransferComplete))
{
return kStatus_Fail;
}
/* Define transfer function. */
sdifHost->transfer = SDIF_TransferFunction;
/* Enable the card power here for mmc card case, because mmc card don't need card detect*/
SDIF_EnableCardPower(sdifHost->base, true);
return kStatus_Success;
}
/**
* Gets event from cache or allocates a new one. Must be called
* under synchronization.
*/
STATIC Event * RWLOCK_GetExclusiveEvent(RWLock * lock)
{
if (lock->eventsInCache > 0) {
Event * e = lock->eventCache[lock->eventsInCache-1];
lock->eventCache[lock->eventsInCache-1] = NULL;
lock->eventsInCache--;
ASSERT(e);
return e;
} else {
return EVENT_Create();
}
}
