dm: usb: Make usb_get_bus easier to use for callers

Make usb_get_bus easier to use for callers, by directly returning the bus
rather then returning it via a pass-by-ref argument.

dm: usb: Make usb_get_bus easier to use for callers

Make usb_get_bus easier to use for callers, by directly returning the bus
rather then returning it via a pass-by-ref argument.

This also removes the error checking from the current callers, as
we already have an assert() for bus not being NULL in usb_get_bus().

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Simon Glass <sjg@chromium.org>

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Merge branch 'u-boot/master' into 'u-boot-arm/master'

Merge branch 'master' of git://www.denx.de/git/u-boot-imx

Merge branch 'master' of git://git.denx.de/u-boot-video

Merge branch 'buildman' of git://git.denx.de/u-boot-x86

dm: usb: sandbox: Add a uclass for USB device emulation

With sandbox we want to be able to emulate USB devices so that we can test
the USB stack. Add a uclass to support this. It impleme

dm: usb: sandbox: Add a uclass for USB device emulation

With sandbox we want to be able to emulate USB devices so that we can test
the USB stack. Add a uclass to support this. It implements the same
operations as a normal USB device driver, but in this case passes them on
to an emulation driver.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Marek Vasut <marex@denx.de>

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dm: usb: Allow USB drivers to be declared and auto-probed

USB devices in U-Boot are currently probed only after all devices have
been enumerated. Each type of device is probed by custom

dm: usb: Allow USB drivers to be declared and auto-probed

USB devices in U-Boot are currently probed only after all devices have
been enumerated. Each type of device is probed by custom code, e.g.:

- USB storage
- Keyboard
- Ethernet

With driver model this approach doesn't work very well. We could build
a picture of the bus and then go back and add the devices later, but
this means that the data structures are incomplete for quite a while.
It also does not follow the model of being able to bind a device when we
discover it.

We would prefer to have devices automatically be bound as the device is
enumerated. This allows us to attach drivers to particular USB classes
or product/vendor IDs. This is the method used by Linux.

Add the required #defines from Linux, a way of declaring a USB driver and
the logic to locate the correct driver given the USB device's descriptors.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Marek Vasut <marex@denx.de>

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dm: usb: Refactor port resets

Move the port reset code into its own function. Rename usb_hub_reset() to
indicate that is is now a legacy function.

Signed-off-by: Simon Glass <sj

dm: usb: Refactor port resets

Move the port reset code into its own function. Rename usb_hub_reset() to
indicate that is is now a legacy function.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Marek Vasut <marex@denx.de>

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dm: usb: Adjust usb_alloc_new_device() to return an error

This function returns NULL on error at present. Adjust it so that we can
return a real error, as is needed with driver model. Al

dm: usb: Adjust usb_alloc_new_device() to return an error

This function returns NULL on error at present. Adjust it so that we can
return a real error, as is needed with driver model. Also improve the
error handling in its caller, usb_hub_port_connect_change(), and adjust
the code order to prepare for driver model.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Marek Vasut <marex@denx.de>

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dm: usb: Add a uclass for USB controllers

Add a uclass that can represent a USB controller. For now we do not create
devices for things attached to the controller. This will be added lat

dm: usb: Add a uclass for USB controllers

Add a uclass that can represent a USB controller. For now we do not create
devices for things attached to the controller. This will be added later.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Marek Vasut <marex@denx.de>

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Merge branch 'master' of http://git.denx.de/u-boot-sunxi

usb: Convert protocol header structures to use explicitly sized variables

This patch converts USB protocol headers to use explicitly sized
fields like the rest of the code

Signe

usb: Convert protocol header structures to use explicitly sized variables

This patch converts USB protocol headers to use explicitly sized
fields like the rest of the code

Signed-off-by: Radha Mohan Chintakuntla <rchintakuntla@cavium.com>
Signed-off-by: Sergey Temerkhanov <s.temerkhanov@gmail.com>

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Merge branch 'master' of git://git.denx.de/u-boot

Merge branch 'master' of git://www.denx.de/git/u-boot-imx

Merge branch 'master' of git://git.denx.de/u-boot-blackfin

Merge branch 'master' of git://git.denx.de/u-boot-atmel

Merge branch 'zynq' of git://www.denx.de/git/u-boot-microblaze

Merge branch 'master' of git://git.denx.de/u-boot-mpc85xx

Merge branch 'fpga' of git://www.denx.de/git/u-boot-microblaze

Merge git://git.denx.de/u-boot-arc

Merge branch 'master' of git://git.denx.de/u-boot-mmc

Merge branch 'master' of git://git.denx.de/u-boot-usb

musb-new: Add interrupt queue support

Add interrupt queue support, so that a usb keyboard can be used without
causing huge latencies.

Signed-off-by: Hans de Goede <hdegoede@redh

musb-new: Add interrupt queue support

Add interrupt queue support, so that a usb keyboard can be used without
causing huge latencies.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>

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musb-new: Fix reset sequence when in host mode

This commit fixes a number of issues with the reset sequence of musb-new
in host mode:

1) Our usb device probe relies on a second

musb-new: Fix reset sequence when in host mode

This commit fixes a number of issues with the reset sequence of musb-new
in host mode:

1) Our usb device probe relies on a second device reset being done after the
first descriptors read. Factor the musb reset code into a usb_reset_root_port
function (and add this as an empty define for other controllers), and call
this when a device has no parent.

2) Just like with normal usb controllers there needs to be a delay after
reset, for normal usb controllers, this is handled in hub_port_reset, add a
delay to usb_reset_root_port.

3) Sync the musb reset sequence with the upstream kernel, clear all bits of
power except bits 4-7, and increase the time reset is asserted to 50 ms.

With these fixes an usb keyboard I have now always enumerates properly, where
as earlier it would only enumerare properly once every 5 tries.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>

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musb-new: Add sunxi musb controller support

This is based on Jussi Kivilinna's work for the linux-sunxi-3.4 kernel to use
the kernels musb driver instead of Allwinners own custom driver.

musb-new: Add sunxi musb controller support

This is based on Jussi Kivilinna's work for the linux-sunxi-3.4 kernel to use
the kernels musb driver instead of Allwinners own custom driver.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>

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