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MdeModulePkg: Enable port power if port power control feature is supported by EHCI

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signed-off-by: erictian
reviewed-by: li-elvin



git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12725 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
erictian
2011-11-16 10:24:47 +00:00
parent 96aace827e
commit f01219e875
3 changed files with 29 additions and 8 deletions
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19
MdeModulePkg/Bus/Pci/EhciDxe/EhciReg.c
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@@ -2,7 +2,7 @@
The EHCI register operation routines.
Copyright (c) 2007 - 2009, Intel Corporation. All rights reserved.<BR>
Copyright (c) 2007 - 2011, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
@@ -554,6 +554,7 @@ EhcInitHC (
)
{
EFI_STATUS Status;
UINT32 Index;
// This ASSERT crashes the BeagleBoard. There is some issue in the USB stack.
// This ASSERT needs to be removed so the BeagleBoard will boot. When we fix
@@ -580,21 +581,29 @@ EhcInitHC (
EhcWriteOpReg (Ehc, EHC_USBINTR_OFFSET, 0);
//
// 2. Program periodic frame list, already done in EhcInitSched
// 3. Start the Host Controller
// 2. Start the Host Controller
//
EhcSetOpRegBit (Ehc, EHC_USBCMD_OFFSET, USBCMD_RUN);
//
// 4. Set all ports routing to EHC
// 3. Power up all ports if EHCI has Port Power Control (PPC) support
//
EhcSetOpRegBit (Ehc, EHC_CONFIG_FLAG_OFFSET, CONFIGFLAG_ROUTE_EHC);
if (Ehc->HcStructParams & HCSP_PPC) {
for (Index = 0; Index < (UINT8) (Ehc->HcStructParams & HCSP_NPORTS); Index++) {
EhcSetOpRegBit (Ehc, (UINT32) (EHC_PORT_STAT_OFFSET + (4 * Index)), PORTSC_POWER);
}
}
//
// Wait roothub port power stable
//
gBS->Stall (EHC_ROOT_PORT_RECOVERY_STALL);
//
// 4. Set all ports routing to EHC
//
EhcSetOpRegBit (Ehc, EHC_CONFIG_FLAG_OFFSET, CONFIGFLAG_ROUTE_EHC);
Status = EhcEnablePeriodSchd (Ehc, EHC_GENERIC_TIMEOUT);
if (EFI_ERROR (Status)) {