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[HIDPARSE]

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- Implement HidP_GetUsagesEx
- HidP_GetUsagesEx uses HidP_GetUsages with undefined usage page
- Required for hid usb support
- Check if there is a maximum set. In that case verify if a usage maximum has been set and apply it to the currnt usage. Fixes asserts while usb composite device installation (keyboard)

svn path=/branches/usb-bringup-trunk/; revision=55357
This commit is contained in:
Johannes Anderwald 2012-01-31 19:00:45 +00:00
parent 3bb6d463d3
commit d0cec1a401
2 changed files with 59 additions and 21 deletions
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65
lib/drivers/hidparser/api.c
View file

@ -345,6 +345,7 @@ HidParser_GetUsagesWithReport(
PHID_REPORT_ITEM ReportItem;
UCHAR Activated;
ULONG Data;
PUSAGE_AND_PAGE UsageAndPage = NULL;
//
// get report
@ -366,6 +367,17 @@ HidParser_GetUsagesWithReport(
return HIDPARSER_STATUS_INVALID_REPORT_LENGTH;
}
//
// cast to usage and page
//
if (UsagePage == HID_USAGE_PAGE_UNDEFINED)
{
//
// the caller requested any set usages
//
UsageAndPage = (PUSAGE_AND_PAGE)UsageList;
}
for(Index = 0; Index < Report->ItemCount; Index++)
{
//
@ -384,17 +396,20 @@ HidParser_GetUsagesWithReport(
//
CurrentUsagePage = (ReportItem->UsageMinimum >> 16);
//
// does usage match
//
if (UsagePage != CurrentUsagePage)
continue;
if (UsagePage != HID_USAGE_PAGE_UNDEFINED)
{
//
// does usage match
//
if (UsagePage != CurrentUsagePage)
continue;
}
//
// check if the specified usage is activated
//
ASSERT(ReportItem->ByteOffset < ReportDescriptorLength);
ASSERT(ReportItem->BitCount < 8);
ASSERT(ReportItem->BitCount <= 8);
//
// one extra shift for skipping the prepended report id
@ -428,10 +443,21 @@ HidParser_GetUsagesWithReport(
continue;
}
//
// store item
//
UsageList[ItemCount] = (ReportItem->UsageMinimum & 0xFFFF);
if (UsagePage != HID_USAGE_PAGE_UNDEFINED)
{
//
// store item
//
UsageList[ItemCount] = (ReportItem->UsageMinimum & 0xFFFF);
}
else
{
//
// store usage and page
//
UsageAndPage[ItemCount].Usage = (ReportItem->UsageMinimum & 0xFFFF);
UsageAndPage[ItemCount].UsagePage = CurrentUsagePage;
}
ItemCount++;
}
@ -443,10 +469,21 @@ HidParser_GetUsagesWithReport(
return HIDPARSER_STATUS_BUFFER_TOO_SMALL;
}
//
// success, clear rest of array
//
Parser->Zero(&UsageList[ItemCount], (*UsageLength - ItemCount) * sizeof(USAGE));
if (UsagePage == HID_USAGE_PAGE_UNDEFINED)
{
//
// success, clear rest of array
//
Parser->Zero(&UsageAndPage[ItemCount], (*UsageLength - ItemCount) * sizeof(USAGE_AND_PAGE));
}
else
{
//
// success, clear rest of array
//
Parser->Zero(&UsageList[ItemCount], (*UsageLength - ItemCount) * sizeof(USAGE));
}
//
// store result size

15
lib/drivers/hidparser/parser.c
View file

@ -535,20 +535,21 @@ HidParser_InitReportItem(
// get usage minimum from local state
//
UsageValue = LocalItemState->UsageMinimum;
ASSERT(LocalItemState->UsageMinimumSet);
ASSERT(LocalItemState->UsageMaximumSet);
//
// append item index
//
UsageValue.u.Extended += ReportItemIndex;
if (UsageValue.u.Extended > LocalItemState->UsageMaximum.u.Extended)
if (LocalItemState->UsageMaximumSet)
{
//
// maximum reached
//
UsageValue.u.Extended = LocalItemState->UsageMaximum.u.Extended;
if (UsageValue.u.Extended > LocalItemState->UsageMaximum.u.Extended)
{
//
// maximum reached
//
UsageValue.u.Extended = LocalItemState->UsageMaximum.u.Extended;
}
}
}