NvError NvEcPowerSuspend(
NvEcPowerState PowerState)
{
NvError e = NvSuccess;
NvEcPrivState *ec = &g_ec;
NvOsMutexLock(ec->mutex);
// Call transport's power off only if it's in ON state
if (ec->powerState == NV_TRUE)
{
// Perform pre-suspend EC operations
NV_CHECK_ERROR_CLEANUP( NvEcPrivPowerSuspendHook(ec->hEc, PowerState) );
// Enter low power state
ec->EnterLowPowerState = NV_TRUE;
// Signal priv thread to get ready for power suspend.
NvOsSemaphoreSignal(ec->sema);
// Wait till priv thread is ready for power suspend.
NvOsSemaphoreWait(ec->LowPowerEntrySema);
e = NvEcTransportPowerSuspend(ec->transport);
ec->powerState = NV_FALSE;
}
fail:
NvOsMutexUnlock(ec->mutex);
return e;
}
static void nvec_battery_remove(struct nvec_device *pdev)
{
unsigned int i = 0;
if (batt_dev) {
batt_dev->exitThread = NV_TRUE;
if (batt_dev->hOdmSemaphore) {
NvOsSemaphoreSignal(batt_dev->hOdmSemaphore);
NvOsSemaphoreDestroy(batt_dev->hOdmSemaphore);
batt_dev->hOdmSemaphore = NULL;
}
if (batt_dev->hBattEventThread) {
NvOsThreadJoin(batt_dev->hBattEventThread);
}
if (batt_dev->hOdmBattDev) {
device_remove_file(&pdev->dev, &tegra_battery_attr);
device_remove_file(&pdev->dev, &tegra_battery_version); //Daniel 20100823, put ec version to fs
del_timer_sync(&(batt_dev->battery_poll_timer));
NvOdmBatteryDeviceClose(batt_dev->hOdmBattDev);
batt_dev->hOdmBattDev = NULL;
for (i = 0; i < ARRAY_SIZE(tegra_power_supplies); i++) {
power_supply_unregister(&tegra_power_supplies[i]);
}
}
kfree(batt_dev);
batt_dev = NULL;
}
}
NvError NvEcPowerResume(void)
{
NvError e = NvSuccess;
NvEcPrivState *ec = &g_ec;
NvOsMutexLock(ec->mutex);
// Call transport's power on if it's OFF state
if (ec->powerState == NV_FALSE)
{
NvOsDebugPrintf("ec_rs NvEcPowerResume 1\n");
NV_CHECK_ERROR_CLEANUP( NvEcTransportPowerResume(ec->transport) );
ec->powerState = NV_TRUE;
ec->EnterLowPowerState = NV_FALSE;
// Signal priv thread to get out of power suspend.
NvOsSemaphoreSignal(ec->LowPowerExitSema);
// Perform post-resume EC operations
NvEcPrivPowerResumeHook(ec->hEc);
NvOsDebugPrintf("ec_rs NvEcPowerResume 2\n");
}
fail:
NvOsMutexUnlock(ec->mutex);
return e;
}
/* Process receive response and update individual timeout */
static NvError
NvEcPrivProcessReceiveResponse( NvEcPrivState *ec,
NvError transportStatus )
{
NvError e = NvSuccess;
NvEcResponse packet;
NvEcResponseNode *responseNode = NULL;
NvU32 size;
// FIXME: remove this extra copying and buffering for optimization
NV_CHECK_ERROR( NvEcTransportGetReceivePacket( ec->transport,
&packet, sizeof(NvEcResponse) ) );
// nothing we can do here if error!
NvEcPrivFindAndDequeueResponse( ec, &packet, &responseNode);
if ( responseNode )
{
size = responseNode->size;
if ( size > sizeof(NvEcResponse) )
size = sizeof(NvEcResponse);
NvOsMemcpy( &responseNode->response, &packet, size );
responseNode->status = transportStatus;
NvOsSemaphoreSignal(responseNode->sema);
// all response stuff should be completed before signalling
}
else
e = NvError_BadParameter;
// will return Bad Param if can't find waiting response
return e;
}
void tegra_audiofx_destroyfx(struct tegra_audio_data *audio_context)
{
FxNotifier *m_FxNotifier = (FxNotifier*)&audio_context->m_FxNotifier;
if (m_FxNotifier->Connected) {
m_FxNotifier->Exit = 1;
NvOsSemaphoreSignal(m_FxNotifier->hTransportSemaphore);
NvOsThreadJoin(m_FxNotifier->hTransportThread);
m_FxNotifier->hTransportThread = 0;
tegra_transport_set_property(
(NvAudioFxObjectHandle)m_FxNotifier->hNotifier,
NvAudioFxNotifierProperty_Disconnect,
0,
0);
}
if (m_FxNotifier->hTransport) {
NvRmTransportClose(m_FxNotifier->hTransport);
m_FxNotifier->hTransport = 0;
}
if (m_FxNotifier->hNotifier) {
tegra_transport_mixer_destroy_object(
(NvAudioFxObjectHandle)m_FxNotifier->hNotifier);
m_FxNotifier->hNotifier = 0;
}
if (m_FxNotifier->hTransportSemaphore) {
NvOsSemaphoreDestroy(m_FxNotifier->hTransportSemaphore);
m_FxNotifier->hTransportSemaphore = 0;
}
return;
}
void
NvEcPrivProcessSendRequest( NvEcPrivState *ec )
{
NvEcRequestNode *requestNode;
NvOsMutexLock( ec->requestMutex );
if ( ec->requestBegin )
{
DISP_MESSAGE(("\r\nProcessSendReq requestBegin=0x%x", ec->requestBegin));
requestNode = ec->requestBegin;
// Update timeouts
requestNode->timeout = NVEC_REQUEST_TIMEOUT_DEFAULT;
ec->timeout[NVEC_IDX_REQUEST] = requestNode->timeout;
ec->timeoutBase[NVEC_IDX_REQUEST] = ec->lastTime;
DISP_MESSAGE(("\r\nec->timeout[NVEC_IDX_REQUEST] is set to=%d",
ec->timeout[NVEC_IDX_REQUEST]));
if ( NvSuccess != NvEcTransportAsyncSendPacket( ec->transport,
&requestNode->request, requestNode->size ) )
{
// transport send fail: de-queue, set status and signal
ec->requestBegin = requestNode->next;
if ( NULL == ec->requestBegin )
ec->requestEnd = NULL;
requestNode->status = NvError_I2cWriteFailed;
DISP_MESSAGE(("\r\nProcessSendReq Async Send failed"));
DISP_MESSAGE(("\r\nProcessSendReq requestBegin=0x%x", ec->requestBegin));
NvOsSemaphoreSignal( requestNode->sema );
}
}
NvOsMutexUnlock( ec->requestMutex );
}
/* We could potentially re-adjust the internal eventNode queue when there
is no ready queue to base on accumulated NumEventPacket hint. */
NvError
NvEcGetEvent(
NvEcEventRegistrationHandle hEcEventRegistration,
NvEcEvent *pEvent,
NvU32 EventSize)
{
NvEcHandle hEc = hEcEventRegistration->hEc;
NvEcPrivState *ec = hEc->ec;
NvError e = NvError_InvalidState;
NvEcEventNode *eventNode, *t;
NvU32 tagMask = (1UL << hEc->tag);
// FIXME: Should change these to assert ???
if ( !pEvent )
return NvError_InvalidAddress;
if ( !hEcEventRegistration )
return NvError_BadParameter;
if ( EventSize > sizeof(NvEcEvent) )
EventSize = sizeof(NvEcEvent);
else if ( EventSize < NVEC_MIN_EVENT_SIZE )
return NvError_InvalidSize;
NvOsMutexLock( ec->eventMutex );
eventNode = ec->eventReadyBegin;
while ( eventNode )
{
// pre advance eventNode since current one could be removed
t = eventNode;
eventNode = eventNode->next;
if ( (hEcEventRegistration->eventBitmap &
(1UL << t->event.EventType)) &&
(t->tagBitmap & tagMask) )
{
// only return event with matching client tag set
NvOsMemcpy( pEvent, &(t->event), EventSize );
e = NvSuccess;
t->tagBitmap &= ~tagMask;
// removed if all registered client has GetEvent(t)
if ( !t->tagBitmap )
{
// In case transport has been nack'ing due to eventFree
// queue is all used up, signal thread to retrieve
// queued up event in transport. eventMutex should
// synchronize NvEcPrivProcessReceiveEvent properly.
if ( NULL == ec->eventFreeBegin )
NvOsSemaphoreSignal( ec->sema );
NvEcPrivRemoveEventFromReady( ec, t );
}
break;
}
}
NvOsMutexUnlock( ec->eventMutex );
return e;
}
/*
* Since send request is blocking, only need to check requestBegin:
* - returns the requestBegin if asked
* - check if requestBegin timeout (will signal back too)
* - Update requestBegin's timeout by rebasing to
* EcPrivThread-global time (hEc->lastTime).
* - reset queue timeout to NV_WAIT_INFINITE
*/
static void
NvEcPrivFindAndDequeueRequest( NvEcPrivState *ec,
NvEcRequestNode **pRequestNode,
NvError transportStatus,
NvBool skipTimeout )
{
NvEcRequestNode *t = NULL;
NvBool remove = skipTimeout;
// always remove node with success if skipTimeout
NvOsMutexLock( ec->requestMutex );
NV_ASSERT(ec->requestBegin);
t = ec->requestBegin;
DISP_MESSAGE(("\r\nFindDQReq requestBegin=0x%x", ec->requestBegin));
if ( t )
{
if ( pRequestNode )
*pRequestNode = t;
if ( skipTimeout )
t->status = transportStatus;
else if ( t->timeout <= NVEC_TIMEDIFF_WITH_BASE(ec, NVEC_IDX_REQUEST) )
{
NvEcTransportAbortSendPacket( ec->transport, &t->request, t->size );
t->status = NvError_Timeout;
remove = NV_TRUE;
DISP_MESSAGE(("RQ time out Reqnode=0x%x", t));
}
if ( remove )
{
ec->requestBegin = t->next;
if ( NULL == ec->requestBegin )
ec->requestEnd = NULL;
DISP_MESSAGE(("\r\nFindDQReq removed=0x%x, removed->next=0x%x, "
"ec->requestBegin=0x%x, t->status=0x%x",
t, t->next, ec->requestBegin, t->status));
if ( pRequestNode == NULL )
NvOsSemaphoreSignal( t->sema );
}
else
{
t->timeout -= NVEC_TIMEDIFF_WITH_BASE(ec, NVEC_IDX_REQUEST);
// update this request timeout with lastTime base
}
// update with per-queue timeout and timeoutBase
ec->timeout[NVEC_IDX_REQUEST] = NV_WAIT_INFINITE;
ec->timeoutBase[NVEC_IDX_REQUEST] = ec->lastTime;
DISP_MESSAGE(("\r\nec->timeout[NVEC_IDX_REQUEST] is set to=%d",
ec->timeout[NVEC_IDX_REQUEST]));
}
NvOsMutexUnlock( ec->requestMutex );
}
static void
PowerEventNotify(
NvRmDeviceHandle hRmDeviceHandle,
NvRmPowerEvent Event)
{
NvU32 i;
NvRmPowerClient* pPowerClient = NULL;
NvRmPowerRegistry* pRegistry = &s_PowerRegistry;
NVRM_POWER_PRINTF(("%s is reported to RM clients\n",
(Event == NvRmPowerEvent_WakeLP0)? "Wake from LP0" : "Wake from LP1"));
// Restore clocks after LP0
if (Event == NvRmPowerEvent_WakeLP0)
NvRmPrivClocksResume(hRmDeviceHandle);
// Store event for all registered clients, and signal only those, that
// have provided valid semaphore handle; on wake from low power states
// set power cycled indicators
for (i = 0; i < pRegistry->UsedIndexRange; i++)
{
pPowerClient = pRegistry->pPowerClients[i];
if (pPowerClient != NULL)
{
ModuleVoltageReq* pVoltageReq = pPowerClient->pVoltageReqHead;
while (pVoltageReq != NULL)
{
if (Event == NvRmPowerEvent_WakeLP0)
{
//LP0: all power groups, except AO group, are powered down
// when core power is down
if (pVoltageReq->PowerGroup != NV_POWERGROUP_AO)
pVoltageReq->PowerCycled = NV_TRUE;
}
else if (Event == NvRmPowerEvent_WakeLP1)
{
// LP1: core power is preserved; but all power groups
// except AO and NPG group are power gated
if ((pVoltageReq->PowerGroup != NV_POWERGROUP_AO) &&
(pVoltageReq->PowerGroup != NV_POWERGROUP_NPG))
pVoltageReq->PowerCycled = NV_TRUE;
}
pVoltageReq = pVoltageReq->pNext;
}
pPowerClient->Event = Event;
if (pPowerClient->hEventSemaphore != NULL)
{
NvOsSemaphoreSignal(pPowerClient->hEventSemaphore);
}
}
}
}
static ssize_t tegra_battery_store_property(
struct device *dev,
struct device_attribute *attr,
const char *buf,
size_t count)
{
unsigned int value = 0;
value = simple_strtoul(buf, NULL, 0);
NvOsMutexLock(batt_dev->hBattEventMutex);
batt_dev->batt_status_poll_period = value;
NvOsMutexUnlock(batt_dev->hBattEventMutex);
NvOsSemaphoreSignal(batt_dev->hOdmSemaphore);
return count;
}
static void PmuThreadTerminate(NvRmPmu* pPmu)
{
/*
* Request thread abort, signal semaphore to make sure the thread is
* awaken and wait for its self-termination. Do nothing if invalid PMU
* structure
*/
if (pPmu)
{
if (pPmu->hSemaphore && pPmu->hThread)
{
pPmu->AbortThread = NV_TRUE;
NvOsSemaphoreSignal(pPmu->hSemaphore);
NvOsThreadJoin(pPmu->hThread);
}
pPmu->AbortThread = NV_FALSE;
}
}
static void
NvEcPrivProcessPostSendRequest( NvEcPrivState *ec,
NvError transportStatus )
{
NvEcRequestNode *requestNode = NULL;
NvEcResponseNode *responseNode;
NvEcPrivFindAndDequeueRequest(ec, &requestNode, transportStatus, NV_TRUE);
// update corresponding responseNode timeout
if ( requestNode )
{
requestNode->completed = NV_TRUE;
responseNode = requestNode->responseNode;
if ( responseNode )
{
NvOsMutexLock( ec->responseMutex );
NV_ASSERT(ec->responseBegin);
if ( NV_WAIT_INFINITE == ec->timeout[NVEC_IDX_RESPONSE] )
{
// no current pending response on timeout watch.
// Update response queue timeout.
responseNode->timeout = NVEC_RESPONSE_TIMEOUT_DEFAULT;
ec->timeout[NVEC_IDX_RESPONSE] = responseNode->timeout;
ec->timeoutBase[NVEC_IDX_RESPONSE] = ec->lastTime;
DISP_MESSAGE(("\r\nec->timeout[NVEC_IDX_RESPONSE] is set to=%d",
ec->timeout[NVEC_IDX_RESPONSE]));
}
else
{
// Update this response timeout with current lastTime as base
responseNode->timeout = NVEC_RESPONSE_TIMEOUT_DEFAULT +
NVEC_TIME_BASE(ec, NVEC_IDX_RESPONSE);
// wraparound time difference will work too.
}
NvOsMutexUnlock( ec->responseMutex );
}
NvOsSemaphoreSignal( requestNode->sema );
// all request stuff should be done before signal
}
}
void tegra_transport_deinit(void)
{
if (!atrans)
goto EXIT;
spin_lock(&atrans->lock);
atrans->RefCount--;
if (atrans->RefCount > 0){
spin_unlock(&atrans->lock);
goto EXIT;
}
spin_unlock(&atrans->lock);
atrans->ShutDown = 1;
if (atrans->hRmTransport) {
NvRmTransportClose(atrans->hRmTransport);
atrans->hRmTransport = 0;
atrans->TransportConnected = 0;
}
if (atrans->hServiceThread) {
NvOsSemaphoreSignal(atrans->hServiceSema);
NvOsThreadJoin(atrans->hServiceThread);
atrans->hServiceThread = 0;
}
if (atrans->hServiceSema) {
NvOsSemaphoreDestroy(atrans->hServiceSema);
atrans->hServiceSema = 0;
}
atrans->hRmDevice = 0;
kfree(atrans);
atrans = 0;
EXIT:
return;
}
static void nvec_battery_remove(struct nvec_device *pdev)
{
unsigned int i = 0;
if (batt_dev) {
batt_dev->exitThread = NV_TRUE;
if (batt_dev->hOdmSemaphore) {
NvOsSemaphoreSignal(batt_dev->hOdmSemaphore);
NvOsSemaphoreDestroy(batt_dev->hOdmSemaphore);
batt_dev->hOdmSemaphore = NULL;
}
if (batt_dev->hBattEventThread) {
NvOsThreadJoin(batt_dev->hBattEventThread);
}
if (batt_dev->hBattEventMutex) {
NvOsMutexDestroy(batt_dev->hBattEventMutex);
batt_dev->hBattEventMutex = NULL;
}
if (batt_dev->hOdmBattDev) {
device_remove_file(&pdev->dev, &tegra_battery_attr);
NvOdmBatteryDeviceClose(batt_dev->hOdmBattDev);
batt_dev->hOdmBattDev = NULL;
for (i = 0; i < ARRAY_SIZE(tegra_power_supplies); i++) {
power_supply_unregister(&tegra_power_supplies[i]);
}
}
kfree(batt_dev);
batt_dev = NULL;
}
}
void NvOdmOsSemaphoreSignal(NvOdmOsSemaphoreHandle semaphore)
{
NvOsSemaphoreSignal( (NvOsSemaphoreHandle)semaphore );
}
static int nvec_battery_probe(struct nvec_device *pdev)
{
int i, rc;
NvError ErrorStatus = NvSuccess;
NvBool result = NV_FALSE;
batt_dev = kzalloc(sizeof(struct tegra_battery_dev), GFP_KERNEL);
if (!batt_dev) {
pr_err("nvec_battery_probe:NOMEM\n");
return -ENOMEM;
}
ErrorStatus = NvOsSemaphoreCreate(&batt_dev->hOdmSemaphore, 0);
if (NvSuccess != ErrorStatus) {
pr_err("NvOsSemaphoreCreate Failed!\n");
goto Cleanup;
}
batt_dev->exitThread = NV_FALSE;
ErrorStatus = NvOsThreadCreate(NvBatteryEventHandlerThread,
batt_dev,
&(batt_dev->hBattEventThread));
if (NvSuccess != ErrorStatus) {
pr_err("NvOsThreadCreate FAILED\n");
goto Cleanup;
}
result = NvOdmBatteryDeviceOpen(&(batt_dev->hOdmBattDev),
(NvOdmOsSemaphoreHandle *)&batt_dev->hOdmSemaphore,
&(batt_dev->ec_version)); //Daniel 20100823, put ec version to fs.
if (!result || !batt_dev->hOdmBattDev) {
pr_err("NvOdmBatteryDeviceOpen FAILED\n");
goto Cleanup;
}
for (i = 0; i < ARRAY_SIZE(tegra_power_supplies); i++) {
if (power_supply_register(&pdev->dev, &tegra_power_supplies[i]))
pr_err("Failed to register power supply\n");
}
batt_dev->batt_status_poll_period = NVBATTERY_POLLING_INTERVAL_MILLISECS;
setup_timer(&(batt_dev->battery_poll_timer), tegra_battery_poll_timer_func, 0);
mod_timer(&(batt_dev->battery_poll_timer),
jiffies + msecs_to_jiffies(batt_dev->batt_status_poll_period));
rc = device_create_file(&pdev->dev, &tegra_battery_attr);
rc = device_create_file(&pdev->dev, &tegra_battery_version); //Daniel 20100823, put ec version to fs
if (rc) {
for (i = 0; i < ARRAY_SIZE(tegra_power_supplies); i++) {
power_supply_unregister(&tegra_power_supplies[i]);
}
del_timer_sync(&(batt_dev->battery_poll_timer));
pr_err("nvec_battery_probe:device_create_file FAILED");
goto Cleanup;
}
return 0;
Cleanup:
batt_dev->exitThread = NV_TRUE;
if (batt_dev->hOdmSemaphore) {
NvOsSemaphoreSignal(batt_dev->hOdmSemaphore);
NvOsSemaphoreDestroy(batt_dev->hOdmSemaphore);
batt_dev->hOdmSemaphore = NULL;
}
if (batt_dev->hBattEventThread) {
NvOsThreadJoin(batt_dev->hBattEventThread);
}
if (batt_dev->hOdmBattDev) {
NvOdmBatteryDeviceClose(batt_dev->hOdmBattDev);
batt_dev->hOdmBattDev = NULL;
}
kfree(batt_dev);
batt_dev = NULL;
return -1;
}
void
NvEcClose(NvEcHandle hEc)
{
NvEcPrivState *ec;
NvBool destroy = NV_FALSE;
if ( NULL == hEc )
return;
NV_ASSERT( s_refcount );
ec = hEc->ec;
NvOsMutexLock( ec->mutex );
// FIXME: handle client still with outstanding event types
if ( !--s_refcount )
{
NvEcPrivDeinitHook(ec->hEc);
NV_ASSERT( NULL == ec->eventReg[hEc->tag].regBegin &&
NULL == ec->eventReg[hEc->tag].regEnd );
NV_ASSERT( NULL == ec->requestBegin && NULL == ec->requestEnd );
NV_ASSERT( NULL == ec->responseBegin && NULL == ec->responseEnd );
#ifndef CONFIG_TEGRA_ODM_BETELGEUSE
ec->exitPingThread = NV_TRUE;
NvOsSemaphoreSignal( ec->hPingSema );
NvOsThreadJoin( ec->hPingThread );
#endif
ec->exitThread = NV_TRUE;
NvOsSemaphoreSignal( ec->sema );
NvOsThreadJoin( ec->thread );
NvEcTransportClose( ec->transport );
NvOsMutexDestroy( ec->requestMutex );
NvOsMutexDestroy( ec->responseMutex );
NvOsMutexDestroy( ec->eventMutex );
NvOsSemaphoreDestroy( ec->sema );
#ifndef CONFIG_TEGRA_ODM_BETELGEUSE
NvOsSemaphoreDestroy( ec->hPingSema );
#endif
NvOsSemaphoreDestroy( ec->LowPowerEntrySema );
NvOsSemaphoreDestroy( ec->LowPowerExitSema );
destroy = NV_TRUE;
NvOsFree( ec->eventNodes );
NvOsFree( ec->hEc );
}
// Set this flag as FALSE to indicate power is disabled
//Daniel 20100723, if we change power state to NV_FALSE, we won't be able to suspend/poweroff it.
//Is there any side effect ?????
//ec->powerState = NV_FALSE;
NV_ASSERT( hEc->tag < NVEC_MAX_REQUESTOR_TAG );
ec->tagAllocated[hEc->tag] = NV_FALSE; // to be recycled
NvOsFree( hEc );
NvOsMutexUnlock( ec->mutex );
if ( destroy )
{
NvOsMutexDestroy( ec->mutex );
NvOsMemset( ec, 0, sizeof(NvEcPrivState) );
ec->mutex = NULL;
}
}
/*
* Process receive (response & event) and update individual timeout.
*
* Return NvError_InsufficientMemory due to 2 conditions:
* - internal event queue (ec->eventNodes) too small.
* - client did NvEcRegisterForEvents.
* Skip TransportGetReceivePacket and transport will keep NACK'ing EC in this
* error case.
*/
static NvError
NvEcPrivProcessReceiveEvent( NvEcPrivState *ec,
NvError transportStatus )
{
NvError e = NvSuccess;
NvEcEventNode *eventNode = NULL;
NvEcEventRegistration *reg = NULL;
NvEcEvent *packet = NULL;
NvEcEventType eventType;
NvU32 i, tagBitmap;
NvOsMutexLock( ec->eventMutex );
if ( ec->eventFreeBegin )
{
eventNode = ec->eventFreeBegin;
packet = &eventNode->event;
}
else
{
e = NvError_InsufficientMemory;
goto fail;
}
NV_CHECK_ERROR( NvEcTransportGetReceivePacket( ec->transport,
(NvEcResponse *)packet, sizeof(NvEcEvent) ) );
// nothing we can do here if error!
eventType = packet->EventType;
NV_ASSERT( eventType < NvEcEventType_Num );
e = NvError_InvalidState; // init to event type never registered
i = 0;
tagBitmap = ec->eventTagBitmap[eventType];
while( tagBitmap )
{
NV_ASSERT( i < NvEcEventType_Num );
if ( tagBitmap & 1 )
{
reg = ec->eventMap[i][eventType];
NV_ASSERT( reg );
if ( NvSuccess != e )
{
// dequeue from free and enqueue into ready if not done yet
ec->eventFreeBegin = eventNode->next;
if ( ec->eventFreeBegin == NULL )
ec->eventFreeEnd = NULL;
eventNode->timeout = NVEC_EVENT_TIMEOUT_DEFAULT; // ???
eventNode->tagBitmap = ec->eventTagBitmap[eventType];
eventNode->next = NULL;
NVEC_ENQ( ec->eventReady, eventNode );
e = NvSuccess;
}
NvOsSemaphoreSignal( reg->sema );
}
i++;
tagBitmap = tagBitmap >> 1;
}
fail:
NvOsMutexUnlock( ec->eventMutex );
return e;
}
static void PmuIsr(void* args)
{
NvRmPmu* pPmu = (NvRmPmu*)args;
NvOsSemaphoreSignal(pPmu->hSemaphore);
}
/*
* Traverse response nodes with these:
* - one response matching the tag param (returns the node). If bypassing
* tag checking, use INVALID tag as parameter.
* - all responses timeout (will signal back too)
* - Update individual responseNode's timeout by rebasing to
* EcPrivThread-global time (hEc->lastTime).
* - Update shortest timeout value for response queue.
*/
static void
NvEcPrivFindAndDequeueResponse( NvEcPrivState *ec,
NvEcResponse *response,
NvEcResponseNode **pResponseNode )
{
NvEcResponseNode *t = NULL, *p = NULL, *temp;
NvU32 timeout = NV_WAIT_INFINITE;
NvBool remove = NV_FALSE, found = NV_FALSE;
NvBool SignalSema;
NvOsMutexLock( ec->responseMutex );
NV_ASSERT(ec->responseBegin);
DISP_MESSAGE(("\r\nFindDQRes responseBegin=0x%x", ec->responseBegin));
if ( ec->responseBegin )
{
t = ec->responseBegin;
while( t )
{
SignalSema = NV_FALSE;
/* FIXME: just match tag? more to match?
* There may be the cases where spurious response is received from EC.
* Response should not be removed from the queue until req is complete.
*/
DISP_MESSAGE(("t->tag=0x%x\n", t->tag));
if (response)
DISP_MESSAGE(("response->RequestorTag=0x%x\n", response->RequestorTag));
if ( response && !found && (t->tag == response->RequestorTag) &&
t->requestNode->completed )
{
if ( pResponseNode )
*pResponseNode = t;
found = NV_TRUE;
remove = NV_TRUE;
}
else
{
#if ENABLE_TIMEOUT
if ( t->timeout <=
NVEC_TIMEDIFF_WITH_BASE(ec, NVEC_IDX_RESPONSE) )
{
t->status = NvError_Timeout;
SignalSema = NV_TRUE;
remove = NV_TRUE;
DISP_MESSAGE(("Resp Timeout Respnode=0x%x", t));
}
else
{
// This check is needed for spurious response case handling.
if (t->timeout != NV_WAIT_INFINITE)
t->timeout -=
NVEC_TIMEDIFF_WITH_BASE(ec, NVEC_IDX_RESPONSE);
// update this response timeout w/ lastTime as base
}
#endif
}
if ( remove )
{
temp = t;
NVEC_UNLINK( ec->response, t, p );
DISP_MESSAGE(("\r\nFindDQRes removed=0x%x, removed->next=0x%x, "
"prev=0x%x ec->responseBegin=0x%x", t, t->next, p,
ec->responseBegin));
remove = NV_FALSE;
if (p)
t = p->next;
else
t = ec->responseBegin;
if (SignalSema == NV_TRUE)
NvOsSemaphoreSignal( temp->sema );
}
else
{
if ( timeout > t->timeout )
timeout = t->timeout;
p = t;
t = t->next;
}
}
// update with per-queue timeout and timeoutBase
ec->timeout[NVEC_IDX_RESPONSE] = timeout;
ec->timeoutBase[NVEC_IDX_RESPONSE] = ec->lastTime;
DISP_MESSAGE(("\r\nec->timeout[NVEC_IDX_RESPONSE] is set to=%d",
ec->timeout[NVEC_IDX_RESPONSE]));
}
if (found == NV_FALSE)
NvOsDebugPrintf("\r\n***NVEC:Received Spurious Response from EC.");
NvOsMutexUnlock( ec->responseMutex );
}
void
NvEcClose(NvEcHandle hEc)
{
NvEcPrivState *ec;
NvBool destroy = NV_FALSE;
if ( NULL == hEc )
return;
NV_ASSERT( s_refcount );
ec = hEc->ec;
NvOsMutexLock( ec->mutex );
// FIXME: handle client still with outstanding event types
if ( !--s_refcount )
{
NvEcPrivDeinitHook(ec->hEc);
NV_ASSERT( NULL == ec->eventReg[hEc->tag].regBegin &&
NULL == ec->eventReg[hEc->tag].regEnd );
NV_ASSERT( NULL == ec->requestBegin && NULL == ec->requestEnd );
NV_ASSERT( NULL == ec->responseBegin && NULL == ec->responseEnd );
ec->exitPingThread = NV_TRUE;
NvOsSemaphoreSignal( ec->hPingSema );
NvOsThreadJoin( ec->hPingThread );
ec->exitThread = NV_TRUE;
NvOsSemaphoreSignal( ec->sema );
NvOsThreadJoin( ec->thread );
NvEcTransportClose( ec->transport );
NvOsMutexDestroy( ec->requestMutex );
NvOsMutexDestroy( ec->responseMutex );
NvOsMutexDestroy( ec->eventMutex );
NvOsSemaphoreDestroy( ec->sema );
NvOsSemaphoreDestroy( ec->hPingSema );
NvOsSemaphoreDestroy( ec->LowPowerEntrySema );
NvOsSemaphoreDestroy( ec->LowPowerExitSema );
destroy = NV_TRUE;
NvOsFree( ec->eventNodes );
NvOsFree( ec->hEc );
}
// Set this flag as FALSE to indicate power is disabled
ec->powerState = NV_FALSE;
NV_ASSERT( hEc->tag < NVEC_MAX_REQUESTOR_TAG );
ec->tagAllocated[hEc->tag] = NV_FALSE; // to be recycled
NvOsFree( hEc );
NvOsMutexUnlock( ec->mutex );
if ( destroy )
{
NvOsMutexDestroy( ec->mutex );
NvOsMemset( ec, 0, sizeof(NvEcPrivState) );
ec->mutex = NULL;
}
}
NvError
NvEcOpen(NvEcHandle *phEc,
NvU32 InstanceId)
{
NvEc *hEc = NULL;
NvU32 i;
NvEcPrivState *ec = &g_ec;
NvOsMutexHandle mutex = NULL;
NvError e = NvSuccess;
NV_ASSERT( phEc );
if ( NULL == ec->mutex )
{
e = NvOsMutexCreate(&mutex);
if (NvSuccess != e)
return e;
if (0 != NvOsAtomicCompareExchange32((NvS32*)&ec->mutex, 0,
(NvS32)mutex) )
NvOsMutexDestroy( mutex );
}
NvOsMutexLock(ec->mutex);
if ( !s_refcount )
{
mutex = ec->mutex;
NvOsMemset( ec, 0, sizeof(NvEcPrivState) );
ec->mutex = mutex;
NV_CHECK_ERROR_CLEANUP( NvOsMutexCreate( &ec->requestMutex ));
NV_CHECK_ERROR_CLEANUP( NvOsMutexCreate( &ec->responseMutex ));
NV_CHECK_ERROR_CLEANUP( NvOsMutexCreate( &ec->eventMutex ));
NV_CHECK_ERROR_CLEANUP( NvOsSemaphoreCreate( &ec->sema, 0));
NV_CHECK_ERROR_CLEANUP( NvOsSemaphoreCreate( &ec->LowPowerEntrySema, 0));
NV_CHECK_ERROR_CLEANUP( NvOsSemaphoreCreate( &ec->LowPowerExitSema, 0));
NV_CHECK_ERROR_CLEANUP( NvEcTransportOpen( &ec->transport, InstanceId,
ec->sema, 0 ) );
}
// Set this flag as TRUE to indicate power is enabled
ec->powerState = NV_TRUE;
// create private handle for internal communications between NvEc driver
// and EC
if ( !s_refcount )
{
ec->hEc = NvOsAlloc( sizeof(NvEc) );
if ( NULL == ec->hEc )
goto clean;
// reserve the zero tag for internal use by the nvec driver; this ensures
// that the driver always has a requestor tag available and can therefore
// always talk to the EC
ec->tagAllocated[0] = NV_TRUE;
ec->hEc->ec = ec;
ec->hEc->tag = 0;
NV_CHECK_ERROR_CLEANUP(NvOsSemaphoreCreate(&ec->hPingSema, 0));
// perform startup operations before mutex is unlocked
NV_CHECK_ERROR_CLEANUP( NvEcPrivInitHook(ec->hEc) );
// start thread to send "pings" - no-op commands to keep EC "alive"
NV_CHECK_ERROR_CLEANUP(NvOsThreadCreate(
(NvOsThreadFunction)NvEcPrivPingThread, ec, &ec->hPingThread));
}
hEc = NvOsAlloc( sizeof(NvEc) );
if ( NULL == hEc )
goto clean;
NvOsMemset(hEc, 0x00, sizeof(NvEc));
hEc->ec = ec;
hEc->tag = NVEC_REQUESTOR_TAG_INVALID;
for ( i = 0; i < NVEC_MAX_REQUESTOR_TAG; i++ )
{
if ( !ec->tagAllocated[i] )
{
ec->tagAllocated[i] = NV_TRUE;
hEc->tag = i;
break;
}
}
if ( NVEC_REQUESTOR_TAG_INVALID == hEc->tag )
goto clean; // run out of tag, clean it up!
*phEc = hEc;
s_refcount++;
NvOsMutexUnlock( ec->mutex );
ec->IsEcActive = NV_FALSE;
return NvSuccess;
clean:
NvOsFree( hEc );
NvOsMutexUnlock( ec->mutex );
return NvError_InsufficientMemory;
fail:
if (!s_refcount)
{
ec->exitPingThread = NV_TRUE;
if (ec->hPingSema)
NvOsSemaphoreSignal( ec->hPingSema );
NvOsThreadJoin( ec->hPingThread );
NvOsSemaphoreDestroy(ec->hPingSema);
ec->exitThread = NV_TRUE;
if (ec->sema)
NvOsSemaphoreSignal( ec->sema );
NvOsThreadJoin( ec->thread );
NvOsFree( ec->hEc );
if ( ec->transport )
NvEcTransportClose( ec->transport );
NvOsMutexDestroy( ec->requestMutex );
NvOsMutexDestroy( ec->responseMutex );
NvOsMutexDestroy( ec->eventMutex );
NvOsSemaphoreDestroy( ec->sema );
NvOsSemaphoreDestroy( ec->LowPowerEntrySema );
NvOsSemaphoreDestroy( ec->LowPowerExitSema );
if ( ec->mutex )
{
NvOsMutexUnlock( ec->mutex );
// Destroying of this mutex here is not safe, if another thread is
// waiting on this mutex, it can cause issues. We shold have
// serialized Init/DeInit calls for creating and destroying this mutex.
NvOsMutexDestroy( ec->mutex );
NvOsMemset( ec, 0, sizeof(NvEcPrivState) );
ec->mutex = NULL;
}
}
return NvError_NotInitialized;
}
static int nvec_battery_probe(struct nvec_device *pdev)
{
int i, rc;
NvError ErrorStatus = NvSuccess;
NvBool result = NV_FALSE;
batt_dev = kzalloc(sizeof(struct tegra_battery_dev), GFP_KERNEL);
if (!batt_dev) {
pr_err("nvec_battery_probe:NOMEM\n");
return -ENOMEM;
}
ErrorStatus = NvOsMutexCreate(&batt_dev->hBattEventMutex);
if (NvSuccess != ErrorStatus) {
pr_err("NvOsMutexCreate Failed!\n");
goto Cleanup;
}
ErrorStatus = NvOsSemaphoreCreate(&batt_dev->hOdmSemaphore, 0);
if (NvSuccess != ErrorStatus) {
pr_err("NvOsSemaphoreCreate Failed!\n");
goto Cleanup;
}
/*Henry++ adjust thread to be createn at last
batt_dev->exitThread = NV_FALSE;
batt_dev->inSuspend = NV_FALSE;
ErrorStatus = NvOsThreadCreate(NvBatteryEventHandlerThread,
batt_dev,
&(batt_dev->hBattEventThread));
if (NvSuccess != ErrorStatus) {
pr_err("NvOsThreadCreate FAILED\n");
goto Cleanup;
}
*/
//Henry add retry when fail ****
for(i=0;i<BATTERY_RETRY_TIMES;i++){
result = NvOdmBatteryDeviceOpen(&(batt_dev->hOdmBattDev),
(NvOdmOsSemaphoreHandle *)&batt_dev->hOdmSemaphore);
if (!result || !batt_dev->hOdmBattDev) {
pr_err("NvOdmBatteryDeviceOpen FAILED,retry i=%i\n",i);
NvOsWaitUS(10000);
continue;
}
else{
break;
}
}
if(i==BATTERY_RETRY_TIMES){
pr_err("NvOdmBatteryDeviceOpen FAILED\n");
goto Cleanup;
}
//******************************
for (i = 0; i < ARRAY_SIZE(tegra_power_supplies); i++) {
if (power_supply_register(&pdev->dev, &tegra_power_supplies[i]))
pr_err("Failed to register power supply\n");
}
batt_dev->batt_status_poll_period = NVBATTERY_POLLING_INTERVAL;
rc = device_create_file(&pdev->dev, &tegra_battery_attr);
if (rc) {
for (i = 0; i < ARRAY_SIZE(tegra_power_supplies); i++) {
power_supply_unregister(&tegra_power_supplies[i]);
}
pr_err("nvec_battery_probe:device_create_file FAILED");
goto Cleanup;
}
//Henry++ adjust thread to be createn at last
batt_dev->exitThread = NV_FALSE;
batt_dev->inSuspend = NV_FALSE;
ErrorStatus = NvOsThreadCreate(NvBatteryEventHandlerThread,
batt_dev,
&(batt_dev->hBattEventThread));
if (NvSuccess != ErrorStatus) {
pr_err("NvOsThreadCreate FAILED\n");
goto Cleanup;
}
return 0;
Cleanup:
batt_dev->exitThread = NV_TRUE;
if (batt_dev->hOdmSemaphore) {
NvOsSemaphoreSignal(batt_dev->hOdmSemaphore);
NvOsSemaphoreDestroy(batt_dev->hOdmSemaphore);
batt_dev->hOdmSemaphore = NULL;
}
if (batt_dev->hBattEventThread) {
NvOsThreadJoin(batt_dev->hBattEventThread);
}
if (batt_dev->hBattEventMutex) {
NvOsMutexDestroy(batt_dev->hBattEventMutex);
batt_dev->hBattEventMutex = NULL;
}
if (batt_dev->hOdmBattDev) {
NvOdmBatteryDeviceClose(batt_dev->hOdmBattDev);
batt_dev->hOdmBattDev = NULL;
}
kfree(batt_dev);
batt_dev = NULL;
//return -1;
return 0; //henry++ workaround system can't enter suspend
}
/*
* Always use one EcPrivThread-global clock/time for timeout calculations
*/
static void
NvEcPrivThread( void * args )
{
NvEcPrivState *ec = (NvEcPrivState *)args;
NvU32 t, timeout = NV_WAIT_INFINITE;
NvU32 tStatus = 0;
NvError wait = NvSuccess;
NvError e;
while( !ec->exitThread )
{
#if ENABLE_TIMEOUT
if ( timeout )
wait = NvOsSemaphoreWaitTimeout( ec->sema, timeout );
#else
NvOsSemaphoreWait( ec->sema );
wait = NvSuccess;
#endif
#if ENABLE_FAKE_TIMEOUT_TEST
t = ec->lastTime + 0x200;
#else
t = NvOsGetTimeMS();
#endif
ec->timeDiff = t - ec->lastTime;
ec->lastTime = t; // update last timer value
if ( !timeout || (wait == NvError_Timeout) )
{
// timeout case
NvEcPrivProcessTimeout( ec );
}
// look for any pending packets
tStatus = NvEcTransportQueryStatus( ec->transport );
e = NvSuccess;
/*
* SEND_COMPLETE event must be processed before RESPONSE_RECEIVE_COMPLETE
* event as SEND_COMPLETE event schedules timeout for RESPONSE_RECEIVE event.
*/
if ( tStatus & (NVEC_TRANSPORT_STATUS_SEND_COMPLETE |
NVEC_TRANSPORT_STATUS_SEND_ERROR) )
{
NvEcPrivProcessPostSendRequest( ec,
(tStatus & NVEC_TRANSPORT_STATUS_SEND_COMPLETE) ?
NvSuccess : NvError_I2cWriteFailed );
}
if ( tStatus & (NVEC_TRANSPORT_STATUS_RESPONSE_RECEIVE_ERROR |
NVEC_TRANSPORT_STATUS_RESPONSE_RECEIVE_COMPLETE) )
{
e = (tStatus & NVEC_TRANSPORT_STATUS_RESPONSE_RECEIVE_COMPLETE) ?
NvSuccess : NvError_I2cReadFailed;
e = NvEcPrivProcessReceiveResponse( ec, e );
// return ignored. Could be spurious response.
}
if ( tStatus & (NVEC_TRANSPORT_STATUS_EVENT_RECEIVE_ERROR |
NVEC_TRANSPORT_STATUS_EVENT_RECEIVE_COMPLETE) )
{
e = (tStatus & NVEC_TRANSPORT_STATUS_EVENT_RECEIVE_COMPLETE) ?
NvSuccess : NvError_I2cReadFailed;
e = NvEcPrivProcessReceiveEvent( ec, e );
// return ignored. Could be spurious event.
}
if ( tStatus & NVEC_TRANSPORT_STATUS_EVENT_PACKET_MAX_NACK ) {
// signal the ping thread to send a ping command since max
// number of nacks have been sent to the EC
if (ec->hPingSema) {
NvOsSemaphoreSignal(ec->hPingSema);
}
}
// send request whenever possible
if ( (ec->timeout[NVEC_IDX_REQUEST] == NV_WAIT_INFINITE) &&
(ec->EnterLowPowerState == NV_FALSE) )
NvEcPrivProcessSendRequest( ec );
#if ENABLE_TIMEOUT
timeout = NvEcPrivUpdateActualTimeout( ec );
#endif
if (ec->EnterLowPowerState)
{
// This code assumes that EC is already in kept in sleep mode by
// either shim or top level code. And there will not be any activity
// going on SM bus.
if (ec->timeout[NVEC_IDX_REQUEST] != NV_WAIT_INFINITE)
{
NvOsDebugPrintf("\r\nNvEc has active requests during suspend. "
"It shouldn't have. check it.");
}
// No active request is pending. Enter into low power state.
// Signal power suspend API to enter into suspend mode.
NvOsSemaphoreSignal(ec->LowPowerEntrySema);
// Wait till power resume API signals resume operation.
NvOsSemaphoreWait(ec->LowPowerExitSema);
// Update the timeouts for the active responses, which are scheduled
// to receive before system entering into suspend.
#if ENABLE_TIMEOUT
NvEcPrivResetActiveRequestResponseTimeouts( ec );
timeout = NvEcPrivUpdateActualTimeout( ec );
#endif // ENABLE_TIMEOUT
}
}
}
NvError
NvEcSendRequest(
NvEcHandle hEc,
NvEcRequest *pRequest,
NvEcResponse *pResponse,
NvU32 RequestSize,
NvU32 ResponseSize)
{
NvEcPrivState *ec;
NvError e = NvSuccess;
NvEcRequestNode *requestNode = NULL;
NvEcResponseNode *responseNode = NULL;
NvOsSemaphoreHandle requestSema = NULL;
NvOsSemaphoreHandle responseSema = NULL;
NV_ASSERT( pRequest );
NV_ASSERT( hEc );
if ( (RequestSize > sizeof(NvEcRequest)) ||
(ResponseSize > sizeof(NvEcResponse)) )
return NvError_InvalidSize;
ec = hEc->ec;
requestNode = NvOsAlloc(sizeof(NvEcRequestNode));
if ( NULL == requestNode )
{
e = NvError_InsufficientMemory;
goto fail;
}
NV_CHECK_ERROR_CLEANUP( NvOsSemaphoreCreate( &requestSema, 0 ) );
if ( pResponse )
{
responseNode = NvOsAlloc(sizeof(NvEcResponseNode));
if ( NULL == responseNode )
{
e = NvError_InsufficientMemory;
goto fail;
}
NV_CHECK_ERROR_CLEANUP( NvOsSemaphoreCreate( &responseSema, 0 ) );
}
ec->IsEcActive = NV_TRUE;
// request end-queue. Timeout set to infinite until request sent.
NvOsMemset( requestNode, 0, sizeof(NvEcRequestNode) );
pRequest->RequestorTag = hEc->tag; // assigned tag here
DISP_MESSAGE(("NvEcSendRequest:pRequest->RequestorTag=0x%x\n", pRequest->RequestorTag));
NvOsMemcpy(&requestNode->request, pRequest, RequestSize);
requestNode->tag = hEc->tag;
DISP_MESSAGE(("NvEcSendRequest:requestNode->tag=0x%x\n", requestNode->tag));
requestNode->sema = requestSema;
requestNode->timeout = NV_WAIT_INFINITE;
requestNode->completed = NV_FALSE;
requestNode->size = RequestSize;
NvOsMutexLock( ec->requestMutex );
NVEC_ENQ( ec->request, requestNode );
DISP_MESSAGE(("\r\nSendReq ec->requestBegin=0x%x", ec->requestBegin));
NvOsMutexUnlock( ec->requestMutex );
// response en-queue. Timeout set to infinite until request completes.
if ( pResponse )
{
NvOsMemset( responseNode, 0, sizeof(NvEcResponseNode) );
requestNode->responseNode = responseNode; // association between
responseNode->requestNode = requestNode; // request & response
responseNode->sema = responseSema;
responseNode->timeout = NV_WAIT_INFINITE;
responseNode->tag = hEc->tag;
DISP_MESSAGE(("NvEcSendRequest:responseNode->tag=0x%x\n", responseNode->tag));
responseNode->size = ResponseSize;
NvOsMutexLock( ec->responseMutex );
NVEC_ENQ( ec->response, responseNode );
DISP_MESSAGE(("\r\nSendReq ec->responseBegin=0x%x", ec->responseBegin));
NvOsMutexUnlock( ec->responseMutex );
}
NvOsMutexLock( ec->mutex );
if ( !ec->thread )
NvEcPrivThreadCreate( ec );
NvOsMutexUnlock( ec->mutex );
// Trigger EcPrivThread
NvOsSemaphoreSignal( ec->sema );
DISP_MESSAGE(("\r\nSendReq requestNode=0x%x, requestNode->responseNode=0x%x",
requestNode, requestNode->responseNode));
// Wait on Request returns
NvOsSemaphoreWait( requestSema );
DISP_MESSAGE(("\r\nSendReq Out of req sema"));
e = requestNode->status;
if ( NvSuccess != e )
{
NvEcResponseNode *t = NULL, *p = NULL;
// de-queue responseNode too !!!!
NvOsMutexLock( ec->responseMutex );
NVEC_REMOVE_FROM_Q( ec->response, responseNode, t, p );
DISP_MESSAGE(("\r\nSendReq responseBegin=0x%x", ec->responseBegin));
NvOsMutexUnlock( ec->responseMutex );
goto fail;
}
if ( pResponse )
{
// Wait on Response returns
NvOsSemaphoreWait( responseSema );
DISP_MESSAGE(("\r\nSendReq Out of resp sema"));
NV_CHECK_ERROR_CLEANUP( responseNode->status );
NvOsMemcpy(pResponse, &responseNode->response, ResponseSize);
}
// if successful, nodes should be de-queue already but not freed yet
fail:
NvOsSemaphoreDestroy( requestSema );
NvOsSemaphoreDestroy( responseSema );
DISP_MESSAGE(("\r\nSendReq Freeing requestNode=0x%x, responseNode=0x%x",
requestNode, responseNode));
NvOsFree( requestNode );
NvOsFree( responseNode );
return e;
}