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SAMA5 EHCI: cosmetic changes

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This commit is contained in:
Gregory Nutt 2013-08-23 11:26:17 -06:00
parent 9a109ba4ba
commit bdc7d0523d
1 changed files with 15 additions and 14 deletions
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29
arch/arm/src/sama5/sam_ehci.c
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@ -1384,22 +1384,31 @@ static void sam_qh_enqueue(struct sam_qh_s *qh)
{
uintptr_t physaddr;
/* Add the new QH to the head of the asynchronous queue list. */
/* Attach the old head as the new QH HLP and flush the new QH and its attached
* qTDs to RAM.
/* Set the internal fqp field. When we transverse the the QH list later,
* we need to know the correct place to start because the overlay may no
* longer point to the first qTD entry.
*/
qh->fqp = qh->hw.overlay.nqp;
(void)sam_qh_dump(qh, NULL, NULL);
/* Add the new QH to the head of the asynchronous queue list.
*
* First, attach the old head as the new QH HLP and flush the new QH and its
* attached qTDs to RAM.
*/
qh->hw.hlp = g_asynchead.hw.hlp;
sam_qh_flush(qh);
/* Set the new QH as the first QH in the asychronous queue and flush the
/* Then set the new QH as the first QH in the asychronous queue and flush the
* modified head to RAM.
*/
physaddr = (uintptr_t)sam_physramaddr((uintptr_t)qh);
g_asynchead.hw.hlp = sam_swap32(physaddr | QH_HLP_TYP_QH);
cp15_coherent_dcache((uintptr_t)&g_asynchead,
(uintptr_t)&g_asynchead + sizeof(struct ehci_qh_s));
cp15_coherent_dcache((uintptr_t)&g_asynchead.hw,
(uintptr_t)&g_asynchead.hw + sizeof(struct ehci_qh_s));
}
/*******************************************************************************
@ -1907,16 +1916,8 @@ static int sam_async_transfer(struct sam_rhport_s *rhport,
*flink = sam_swap32(physaddr);
}
/* Set the internal fqp field. When we transverse the the QH list later,
* we need to know the correct place to start because the overlay may no
* longer point to the first qTD entry.
*/
qh->fqp = qh->hw.overlay.nqp;
/* Add the new QH to the head of the asynchronous queue list */
(void)sam_qh_dump(qh, NULL, NULL);
sam_qh_enqueue(qh);
/* Release the EHCI semaphore while we wait. Other threads need the