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authorAlan Stern <stern@rowland.harvard.edu>2012-07-11 11:21:32 -0400
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2012-07-16 16:50:13 -0700
commit4c53de72109759c931744734ca75f9cecb3baef1 (patch)
tree0f464052baf26967994146bf3b3716b3dd6e6d35 /drivers/usb/host/ehci.h
parentc83e1a9ff68a6535b81c40dc8fda99348ab480fb (diff)
USB: EHCI: add symbolic constants for QHs
This patch (as1568) introduces symbolic constants for some of the less-frequently used bitfields in the QH structure. This makes the code a little easier to read and understand. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/host/ehci.h')
-rw-r--r--drivers/usb/host/ehci.h8
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/usb/host/ehci.h b/drivers/usb/host/ehci.h
index f7a59f5d70c6..195449db1b18 100644
--- a/drivers/usb/host/ehci.h
+++ b/drivers/usb/host/ehci.h
@@ -324,7 +324,13 @@ union ehci_shadow {
struct ehci_qh_hw {
__hc32 hw_next; /* see EHCI 3.6.1 */
__hc32 hw_info1; /* see EHCI 3.6.2 */
-#define QH_HEAD 0x00008000
+#define QH_CONTROL_EP (1 << 27) /* FS/LS control endpoint */
+#define QH_HEAD (1 << 15) /* Head of async reclamation list */
+#define QH_TOGGLE_CTL (1 << 14) /* Data toggle control */
+#define QH_HIGH_SPEED (2 << 12) /* Endpoint speed */
+#define QH_LOW_SPEED (1 << 12)
+#define QH_FULL_SPEED (0 << 12)
+#define QH_INACTIVATE (1 << 7) /* Inactivate on next transaction */
__hc32 hw_info2; /* see EHCI 3.6.2 */
#define QH_SMASK 0x000000ff
#define QH_CMASK 0x0000ff00