linux-toradex.git/include/linux/usb/ch11.h, branch v3.4.5

USB/xHCI: Enable USB 3.0 hub remote wakeup.

2012-02-14T20:12:24+00:00

USB 3.0 hubs have a different remote wakeup policy than USB 2.0 hubs.
USB 2.0 hubs, once they have remote wakeup enabled, will always send
remote wakes when anything changes on a port.

However, USB 3.0 hubs have a per-port remote wake up policy that is off
by default.  The Set Feature remote wake mask can be changed for any
port, enabling remote wakeup for a connect, disconnect, or overcurrent
event, much like EHCI and xHCI host controller "wake on" port status
bits.  The bits are cleared to zero on the initial hub power on, or
after the hub has been reset.

Without this patch, when a USB 3.0 hub gets suspended, it will not send
a remote wakeup on device connect or disconnect.  This would show up to
the user as "dead ports" unless they ran lsusb -v (since newer versions
of lsusb use the sysfs files, rather than sending control transfers).

Change the hub driver's suspend method to enable remote wake up for
disconnect, connect, and overcurrent for all ports on the hub.  Modify
the xHCI driver's roothub code to handle that request, and set the "wake
on" bits in the port status registers accordingly.

Signed-off-by: Sarah Sharp

USB: Remove duplicate USB 3.0 hub feature #defines.

2012-02-10T22:24:31+00:00

Somehow we ended up with duplicate hub feature #defines in ch11.h.
Tatyana Brokhman first created the USB 3.0 hub feature macros in 2.6.38
with commit 0eadcc09203349b11ca477ec367079b23d32ab91 "usb: USB3.0 ch11
definitions".  In 2.6.39, I modified a patch from John Youn that added
similar macros in a different place in the same file, and committed
dbe79bbe9dcb22cb3651c46f18943477141ca452 "USB 3.0 Hub Changes".

Some of the #defines used different names for the same values.  Others
used exactly the same names with the same values, like these gems:

 #define USB_PORT_FEAT_BH_PORT_RESET     28
...
 #define USB_PORT_FEAT_BH_PORT_RESET            28

According to my very geeky husband (who looked it up in the C99 spec),
it is allowed to have object-like macros with duplicate names as long as
the replacement list is exactly the same.  However, he recalled that
some compilers will give warnings when they find duplicate macros.  It's
probably best to remove the duplicates in the stable tree, so that the
code compiles for everyone.

The macros are now fixed to move the feature requests that are specific
to USB 3.0 hubs into a new section (out of the USB 2.0 hub feature
section), and use the most common macro name.

This patch should be backported to 2.6.39.

Signed-off-by: Sarah Sharp 
Cc: Tatyana Brokhman 
Cc: John Youn 
Cc: Jamey Sharp 
Cc: stable@vger.kernel.org

USB: Remove the duplicate definition of HUB_SET_DEPTH

2011-12-12T22:46:47+00:00

The macro HUB_SET_DEPTH is defined twice in ch11.h (introduced by
commit 0eadcc0 "usb: USB3.0 ch11 definitions" and dbe79bb "USB 3.0
Hub Changes"), so remove the duplicate one in the USB 2.0 part.

Signed-off-by: Qinglin Ye 
Cc: John Youn 
Cc: Sergei Shtylyov 
Signed-off-by: Greg Kroah-Hartman

USB: Adding #define in hub_configure() and hcd.c file

2011-12-10T00:20:38+00:00

This patch is in succession of previous patch
commit c8421147926fcacf53081a36438a0bed394da9f5
        xHCI: Adding #define values used for hub descriptor

Hub descriptors characteristics #defines values are added in
hub_configure() in place of magic numbers as asked by Alan Stern.
And the indentation for switch and case is changed to be same.

Some #defines values are added in ch11.h for defining hub class
protocols and used in hub.c and hcd.c in which magic values were
used for hub class protocols.

Signed-off-by: Aman Deep 
Signed-off-by: Greg Kroah-Hartman

xHCI: Adding #define values used for hub descriptor

2011-11-27T03:58:47+00:00

xhci-hub used some numerical values for initialisation of root hub
descriptors. #define values are addded in usb 2.0 hub specification
file and these values are used for root hub characteristics
initialisation.

Also use some #defines in places where magic numbers are being used.

Signed-off-by: Aman Deep 
Acked-by: Sarah Sharp 
Signed-off-by: Greg Kroah-Hartman

USB: Remove bogus USB_PORT_STAT_SUPER_SPEED symbol.

2011-03-14T01:23:50+00:00

USB_PORT_STAT_SUPER_SPEED is a made up symbol that the USB core used to
track whether USB ports had a SuperSpeed device attached.  This is a
linux-internal symbol that was used when SuperSpeed and non-SuperSpeed
devices would show up under the same xHCI roothub.  This particular
port status is never returned by external USB 3.0 hubs.  (Instead they
have a USB_PORT_STAT_SPEED_5GBPS that uses a completely different speed
mask.)

Now that the xHCI driver registers two roothubs, USB 3.0 devices will only
show up under USB 3.0 hubs.  Rip out USB_PORT_STAT_SUPER_SPEED and replace
it with calls to hub_is_superspeed().

Signed-off-by: Sarah Sharp

USB 3.0 Hub Changes

2011-03-14T01:07:11+00:00

Update the USB core to deal with USB 3.0 hubs.  These hubs have a slightly
different hub descriptor than USB 2.0 hubs, with a fixed (rather than
variable length) size.  Change the USB core's hub descriptor to have a
union for the last fields that differ.  Change the host controller drivers
that access those last fields (DeviceRemovable and PortPowerCtrlMask) to
use the union.

Translate the new version of the hub port status field into the old
version that khubd understands.  (Note: we need to fix it to translate the
roothub's port status once we stop converting it to USB 2.0 hub status
internally.)

Add new code to handle link state change status.  Send out new control
messages that are needed for USB 3.0 hubs, like Set Hub Depth.

This patch is a modified version of the original patch submitted by John
Youn.  It's updated to reflect the removal of the "bitmap" #define, and
change the hub descriptor accesses of a couple new host controller
drivers.

Signed-off-by: John Youn 
Signed-off-by: Sarah Sharp 
Cc: Nobuhiro Iwamatsu 
Cc: Inaky Perez-Gonzalez 
Cc: Tony Olech 
Cc: "Robert P. J. Day" 
Cc: Max Vozeler 
Cc: Tejun Heo 
Cc: Yoshihiro Shimoda 
Cc: Rodolfo Giometti 
Cc: Mike Frysinger 
Cc: Anton Vorontsov 
Cc: Sebastian Siewior 
Cc: Lothar Wassmann 
Cc: Olav Kongas 
Cc: Martin Fuzzey 
Cc: Alan Stern 
Cc: David Brownell

USB: usb.h: Make comment match the defines it describes

2011-02-17T18:53:25+00:00

Signed-off-by: Paul Bolle 
Signed-off-by: Greg Kroah-Hartman

usb: USB3.0 ch11 definitions

2010-11-11T14:19:35+00:00

Adding hub SuperSpeed usb definitions as defined by ch10 of the USB3.0
spec.

Signed-off-by: Tatyana Brokhman 
Signed-off-by: Greg Kroah-Hartman

USB: export the new ch11.h file to userspce

2010-05-20T20:21:40+00:00

This patch (as1374) cleans up a few loose ends in the
include/linux/usb/ch11.h header file and exports it to userspace.

Signed-off-by: Alan Stern 
Cc: Eric Lescouet 
Signed-off-by: Greg Kroah-Hartman