From: Eric Lescouet <Eric.Lescouet@xxxxxxxxxxxxxxxx>
Base on inputs from Alan Stern, split the hub.h header into:
- new ch11.h header (most of it) containing constants and
structures from chapter 11 of the USB 2.0 spec.
- a small remaining part being merged into hcd.h.
Signed-of-by: Eric Lescouet <eric@xxxxxxxxxxxx>
Cc: Alan Stern <stern@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxx>
---
include/linux/usb/{hub.h => ch11.h} | 47 +++++-----------------------------
include/linux/usb/hcd.h | 37 ++++++++++++++++++++++++++-
2 files changed, 43 insertions(+), 41 deletions(-)
rename include/linux/usb/{hub.h => ch11.h} (79%)
diff --git a/include/linux/usb/hub.h b/include/linux/usb/ch11.h
similarity index 79%
rename from include/linux/usb/hub.h
rename to include/linux/usb/ch11.h
index de8081f..35cb735 100644
--- a/include/linux/usb/hub.h
+++ b/include/linux/usb/ch11.h
@@ -1,13 +1,14 @@
-#ifndef __LINUX_HUB_H
-#define __LINUX_HUB_H
-
/*
- * Hub protocol and driver data structures.
+ * This file holds Hub protocol constants and data structures that are
+ * defined in chapter 11 (Hub Specification) of the USB 2.0 specification.
*
- * Some of these are known to the "virtual root hub" code
- * in host controller drivers.
+ * It is used/shared between the USB core, the HCDs and couple of other USB
+ * drivers.
*/
+#ifndef __LINUX_HUB_H
+#define __LINUX_HUB_H
+
#include <linux/list.h>
#include <linux/workqueue.h>
#include <linux/compiler.h> /* likely()/unlikely() */
@@ -162,44 +163,10 @@ enum hub_led_mode {
INDICATOR_ALT_BLINK, INDICATOR_ALT_BLINK_OFF
} __attribute__ ((packed));
-struct usb_device;
-
/* Transaction Translator Think Times, in bits */
#define HUB_TTTT_8_BITS 0x00
#define HUB_TTTT_16_BITS 0x20
#define HUB_TTTT_24_BITS 0x40
#define HUB_TTTT_32_BITS 0x60
-/*
- * As of USB 2.0, full/low speed devices are segregated into trees.
- * One type grows from USB 1.1 host controllers (OHCI, UHCI etc).
- * The other type grows from high speed hubs when they connect to
- * full/low speed devices using "Transaction Translators" (TTs).
- *
- * TTs should only be known to the hub driver, and high speed bus
- * drivers (only EHCI for now). They affect periodic scheduling and
- * sometimes control/bulk error recovery.
- */
-struct usb_tt {
- struct usb_device *hub; /* upstream highspeed hub */
- int multi; /* true means one TT per port */
- unsigned think_time; /* think time in ns */
-
- /* for control/bulk error recovery (CLEAR_TT_BUFFER) */
- spinlock_t lock;
- struct list_head clear_list; /* of usb_tt_clear */
- struct work_struct clear_work;
-};
-
-struct usb_tt_clear {
- struct list_head clear_list;
- unsigned tt;
- u16 devinfo;
- struct usb_hcd *hcd;
- struct usb_host_endpoint *ep;
-};
-
-extern int usb_hub_clear_tt_buffer(struct urb *urb);
-extern void usb_ep0_reinit(struct usb_device *);
-
#endif /* __LINUX_HUB_H */
diff --git a/include/linux/usb/hcd.h b/include/linux/usb/hcd.h
index ca228f0..d268415 100644
--- a/include/linux/usb/hcd.h
+++ b/include/linux/usb/hcd.h
@@ -374,7 +374,42 @@ extern void usb_destroy_configuration(struct usb_device *dev);
* HCD Root Hub support
*/
-#include <linux/usb/hub.h>
+#include <linux/usb/ch11.h>
+
+/*
+ * As of USB 2.0, full/low speed devices are segregated into trees.
+ * One type grows from USB 1.1 host controllers (OHCI, UHCI etc).
+ * The other type grows from high speed hubs when they connect to
+ * full/low speed devices using "Transaction Translators" (TTs).
+ *
+ * TTs should only be known to the hub driver, and high speed bus
+ * drivers (only EHCI for now). They affect periodic scheduling and
+ * sometimes control/bulk error recovery.
+ */
+
+struct usb_device;
+
+struct usb_tt {
+ struct usb_device *hub; /* upstream highspeed hub */
+ int multi; /* true means one TT per port */
+ unsigned think_time; /* think time in ns */
+
+ /* for control/bulk error recovery (CLEAR_TT_BUFFER) */
+ spinlock_t lock;
+ struct list_head clear_list; /* of usb_tt_clear */
+ struct work_struct clear_work;
+};
+
+struct usb_tt_clear {
+ struct list_head clear_list;
+ unsigned tt;
+ u16 devinfo;
+ struct usb_hcd *hcd;
+ struct usb_host_endpoint *ep;
+};
+
+extern int usb_hub_clear_tt_buffer(struct urb *urb);
+extern void usb_ep0_reinit(struct usb_device *);
/* (shifted) direction/type/recipient from the USB 2.0 spec, table 9.2 */
#define DeviceRequest \
--
1.7.1
--
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