usb: ehci: use linux-way ehci_readl and ehci_writel ...

Also drop nowhere defined CONFIG_EHCI_DESC_BIG_ENDIAN.

Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

USB: EHCI: reuse ch9.h config and interface descriptors ...

Now that usb_config_descriptor and usb_interface_descriptor are clean
of any additional fields, drop the duplication in EHCI code and use
the default ones.

Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

USB: Move FooRequest defines and add class requests ...

{Device,Interface,Endpoint}Requests are currently defined in private
ehci.h but are also useful for other drivers than ehci-hcd. Move them
to usb/usb_defs.h and also add some more class requests.

Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Treewide: remove address of the Free Software Foundation ...

The FSF address has changed in the past. Instead of updating it
each time the address changes, just drop it completely treewide.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

USB ehci: rework cache handling ...

We do not need to invalidate the cache in the poll loop anymore
since the corresponding bit is now in a dma coherent area. Instead,
flush cache before hardware operation and invalidate afterwards. Put
the corresponding code inline since it's shorter.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

USB ehci: put fields of struct qTD directly into struct QH ...

This allows us to extend struct qTD with non hardware specific
fields.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

USB: Remove __attribute__ ((packed)) for struct ehci_hccr and ehci_hcor ...

cherry-picked from U-Boot.

commit 69716c1
Author: Jason Kridner <jkridner@beagleboard.org>
Date:   Wed Apr 20 08:54:16 2011 -0500

    USB: Remove __attribute__ ((packed)) for struct ehci_hccr and ehci_hcor

    Remove __attribute__ ((packed)) to prevent byte access to soc
    registers in some gcc versions.

    Having patches to enable ehci for the BeagleBoard lying around for
    several months, this one was the show-stopper.

    Switched to align(4), rather than remove the attribute, per suggestion
    from Alexander.

    Credits have to go to Laine Walker-Avina <lwalkera@ieee.org> for
    finding the problem.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

ehci: set CONFIG_SYS_USB_EHCI_MAX_ROOT_PORTS to 16 ...

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>

drivers/usb: regorganisation ...

move to linux usb driver organisation

as following

drivers/usb/core
drivers/usb/gadget
drivers/usb/host
drivers/usb/otg

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>