u-boot.git/include/usb.h, branch v2017.11

dm: usb: emul: Drop usb_emul_reset()

2017-10-01T14:32:51+00:00

With the root hub unbinding in usb_stop(), there is no need to do
a Sandbox-specific reset operation. usb_emul_reset() is no longer
used anywhere, drop it.

Signed-off-by: Bin Meng

usb: emul: Expose find_descriptor() as a public API

2017-10-01T14:32:51+00:00

This can be useful outside of the sandbox usb emulation uclass
driver. Expose it as a public API with a proper prefix (usb_emul_).

Signed-off-by: Bin Meng

usb: sandbox: Fix emulator device select logic in usb_emul_find_devnum()

2017-10-01T14:32:50+00:00

Current emulator select logic in usb_emul_find_devnum() is to test
the USB address. The USB address of the device being enumerated is
initialized to zero at the beginning of the enumeration process in
usb_setup_device(). At this point, the saved USB address in the
platform data has not been assigned to any valid USB address either.
This means: the logic will select an emulator device according to
its sequence of declaring order in the device tree. Take test.dts
for example, flash-stick@0 will be selected before flash-stick@1.
But unfortunately such logic is wrong.

In fact USB devices show up in a random order during the enumeration
which means usb_emul_find_devnum() may be called on port 3 for keyb@3
before on port 0 for flash-stick@0.

To fix this, we introduce a new emulator uclass specific platdata
to store the USB device's port number on its parent hub, and update
the logic to test the port number instead.

Signed-off-by: Bin Meng

usb: Fix comments of usb_emul_find_for_dev()

2017-10-01T14:32:50+00:00

There is no such a parameter called 'bus'.

Signed-off-by: Bin Meng

usb: emul: Remove maxpacketsize in usb_emul_setup_device()

2017-10-01T14:32:50+00:00

This parameter is never used.

Signed-off-by: Bin Meng

dm: usb: Add a new USB controller operation 'get_max_xfer_size'

2017-09-27T10:12:21+00:00

The HCD may have limitation on the maximum bytes to be transferred
in a USB transfer. USB class driver needs to be aware of this.

Signed-off-by: Bin Meng

dm: usb: Add a new USB controller operation 'update_hub_device'

2017-07-28T21:34:35+00:00

For USB host controllers like xHC, its internal representation of
hub needs to be updated after the hub descriptor is fetched. This
adds a new op that does this.

Signed-off-by: Bin Meng 
Reviewed-by: Simon Glass

usb: hub: Parse and save TT details from device descriptor

2017-07-28T21:34:34+00:00

A high speed hub has a special responsibility to handle full speed/
low speed devices connected on downstream ports. In this case, the
hub must isolate the high speed signaling environment from the full
speed/low speed signaling environment with the help of Transaction
Translator (TT). TT details are provided by hub descriptors and we
parse and save it to hub uclass_priv for later use.

Signed-off-by: Bin Meng 
Reviewed-by: Simon Glass

usb: hub: Support 'set hub depth' request for USB 3.0 hubs

2017-07-28T21:34:32+00:00

USB 3.0 hub uses a hub depth value multiplied by four as an offset
into the 'route string' to locate the bits it uses to determine the
downstream port number. We shall set the hub depth value of a USB
3.0 hub after it is configured.

Signed-off-by: Bin Meng 
Reviewed-by: Simon Glass

usb: hub: Add a new API to test if a hub device is root hub

2017-07-28T21:34:30+00:00

Sometimes we need know if a given hub device is root hub or not.
Add a new API to test this. This removes the xHCI driver's own
version is_root_hub() and change to use the new API.

While we are here, remove the unused/commented out get_usb_device()
in the xHCI driver too.

Signed-off-by: Bin Meng