fastboot: split generic code from USB gadget ...

The fastboot specification describes other protocols beyond USB. Allow
these to reuse the generic parts of the existing fastboot code when they
are implemented.

Most of the changes in common/fastboot.c are due to the renaming of struct
f_fastboot *f_fb to struct fastboot *fb.

Signed-off-by: Edmund Henniges <eh@emlix.com>
Signed-off-by: Daniel Glöckner <dg@emlix.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Merge branch 'for-next/mxs'

usb: i.MX: Add i.MX28 support ...

The existing i.MX chipidea support can be used for i.MX28 as well. The
main difference is that the i.MX28 doesn't have a usbmisc unit, so the
bulk of this patch makes this unit optional in the driver.

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

treewide: remove references to CREDITS ...

The CREDITS file was removed from barebox in 2015 by commit 6570288f2d97
("Remove the CREDITS file"). Remove references to it from several files.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Merge branch 'for-next/usb'

usb: Add U-Boot xhci driver ...

This adds the xhci driver from U-Boot-2020.04-rc2. The usual things
like adjusting to the barebox driver model and using dev_* instead of
printf/puts/debug messages are made.

The previously existing PCI support is not present in this driver
currently. XHCI PCI support was not enabled in any defconfig, so we
boldly assume it was unused. It shouldn't be much effort though to
add it again.

The memory handling has been changed for barebox. The various
descriptor rings and descriptors are allocated with dma_alloc_coherent()
which makes the cache flushing/invalidating unnecessary. They are left
in the driver in case we want to change that.

The XHCI has a nasty limitation in that the TRBs may not cross a 64KiB
boundary. This limitation has been handled in the U-Boot driver, but the
handling seems to be broken. We help ourselves with using a bounce
buffer which is sufficiently aligned, but this limits the maximum bulk
transfer size to 64KiB.

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

usb: Add super speed support ...

This adds the missing bits and pieces to add super speed support to the
USB stack. It is based on the corresponding U-Boot code.

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

usb: hub: Translate USB 3.0 hub port status into old version ...

Adoption of U-Boot commit:

| 1commit 74ffc7c
| Author: Bin Meng <bmeng.cn@gmail.com>
| Date:   Wed Jul 19 21:51:12 2017 +0800
|
|     usb: hub: Translate USB 3.0 hub port status into old version
|
|     USB 3.0 hub port status field has different bit positions from 2.0
|     hubs. Since U-Boot only understands the old version, translate the
|     new one into the old one.
|
|     Since we are going to add USB 3.0 hub support, this feature is only
|     available with driver model USB.
|
|     Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
|     Reviewed-by: Simon Glass <sjg@chromium.org>

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

usb: net: Allocate tx buffer dynamically ...

It's cleaner to have a tx buffer per device and not one for all.

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

usb: net: Allocate rx buffer dynamically ...

Allocate an individual rx buffer per device in the size we need it
instead of using one global buffer for all devices.

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

usb: support set hub depth request for USB 3.0 hubs ...

This is an adoption of U-Boot commit bbc6f06:

| commit bbc6f06
| Author: Bin Meng <bmeng.cn@gmail.com>
| Date:   Wed Jul 19 21:51:13 2017 +0800
|
|     usb: hub: Support 'set hub depth' request for USB 3.0 hubs
|
|     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 <bmeng.cn@gmail.com>
|     Reviewed-by: Simon Glass <sjg@chromium.org>

In this patch we also support recording the depth of a hub in
struct usb_device.

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

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

Adoption of U-Boot commit 5624dfd:

| commit 5624dfd
| Author: Bin Meng <bmeng.cn@gmail.com>
| Date:   Wed Jul 19 21:51:16 2017 +0800
|
|     usb: hub: Parse and save TT details from device descriptor
|
|     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 <bmeng.cn@gmail.com>
|     Reviewed-by: Simon Glass <sjg@chromium.org>

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

usb: Make driver_info const ...

driver_info shouldn't be changed, make it const.

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

usb: rename "struct usb_configuration" to "struct usb_config" ...

struct usb_configuration in usb.h conflicts with struct
usb_configuration in usb/composite.h

The version in usb/composite.h is also defined in Linux, so rename the
other one.

Signed-off-by: Christian Eggers <ceggers@arri.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

usb: Add usbroothubdes.h ...

Taken from U-Boot, needed for the upcoming dwc2 driver.

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

usb: Make timeout unit clear ...

The usb_*_msg() functions take a timeout parameter. Make clear which
unit is expected by adding a _ms suffix to the variable name.

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

usb: i.MX: Use usb_register_otg_device() ...

We now have usb_register_otg_device() to register an "otg" device. Use
it and drop the custom code.

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

usb: Add function to register otg dev ...

We have two drivers in the tree which register an "otg" device to
configure the host/peripheral switching. Before introducing a third
driver create a common function for it.

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

Merge branch 'for-next/usb'

Merge branch 'for-next/layerscape'

usb: Change power-on / scanning timeout handling ...

Change USB port scanning procedure and timeout handling in the
following ways:

1)
The power-on delay in usb_hub_power_on() is now reduced to a value of
max(100ms, "hub->desc.bPwrOn2PwrGood * 2"). The code does not wait
using mdelay, instead usb_hub_power_on() will wait before querying
the device in the scanning loop later. The total connection timeout for
this hub, which is (1 second + hub->desc.bPwrOn2PwrGood * 2) is
calculated and will be used in the following per-port scanning loop as
the timeout to detect active USB devices on this hub.

2)
Don't delay the minimum delay (for power to stabilize) in
usb_hub_power_on(). Instead skip querying these devices in the scanning
loop usb_scan_port() until the delay time is reached.

3)
The ports are now scanned in a quasi parallel way. The current code did
wait for each (unconnected) port to reach its timeout and only then
continue with the next port. This patch now changes this to scan all
ports of all USB hubs quasi simultaneously. For this, all ports are added
to a scanning list in usb_hub_configure_ports(). The list is later scanned
in usb_device_list_scan() until all ports are ready by either a) reaching
the connection timeout (calculated earlier), or by b) detecting a USB
device. This results in a faster USB scan time as the recursive scanning
of USB hubs connected to the hub that's currently being scanned will
start earlier.

4)
Ports with overcurrent detection will get scanned multiple times if OC
condition is detected (PORT_OVERCURRENT_MAX_SCAN_COUNT).

Without patch:

    $ time usb
    usb: USB: scanning bus for devices...
    usb: 17 USB Device(s) found
    time: 10344ms

With patch:

    $ time usb
    usb: USB: scanning bus for devices...
    usb: 17 USB Device(s) found
    time: 4529ms

Delta: ~6 seconds

Signed-off-by: Primoz Fiser <primoz.fiser@norik.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

usb: gadget: composite: conditionally dequeue setup requests ...

This is an adoption of Kernel commit a7c12eaf2 ("usb: gadget: composite:
conditionally dequeue os_desc and setup requests"). Basically we only
want to dequeue ep0 requests when they are actually queued. Drivers like
dwc3 warn when unqueued requests are being tried to unqueued.

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

usb/ch9.h: add USB 3.1 isoc endpoint define ...

Add a new define for USB 3.1 endpoints

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

usb: gadget: add usb_gadget_udc_reset function ...

Add a function to notify the udc core, that a bus reset occured.

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

USB: remove blackfin support ...

The blackfin architecture has been removed from barebox. Remove the
blackfin specifics in the USB drivers as well.

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

usb: Drop usb_disable_asynch() ...

There are no users of usb_control_msg() in the codebase that pass
timeout of 0, so it doesn't look like usb_disable_asynch() has any
effect on USB operation. Drop that function and remove all of its uses
to simplify things.

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

include/usb: Import USB_SPEED_SUPER_PLUS from Linux ...

Import USB_SPEED_SUPER_PLUS constant from Linux to support porting
kernel code that uses it.

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

usb: gadget: fastboot: pass message type as enum ...

We used to pass the message type ("INFO", "FAIL", "OKAY") as strings
to fastboot_tx_print(). Change this to a enum type. This allows
fastboot_tx_print() to react on the message type in the next step.

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

usbgadget: autostart: add DFU support ...

Use global variable dfu_function to autostart DFU. As similar code
is used to start multifunction gadget using command, move common
code to common/usbgadget.c and consolidate it.
It turned out that '-s' option of usbgadget command does nothing,
so remove its help text and make it function as '-a'.

Signed-off-by: Ladislav Michl <ladis@linux-mips.org>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

usb: gadget: fsl_udc: pass controller instance to unregister ...

ci_udc_unregister() used to unregister "the controller". Since we
may register multiple chipidea devices we called ci_udc_unregister()
for each of them. This led to messages like:

ERROR: imx-usb 53f80000.usb: gadget not registered.

Fix this by returning the registered controller. This allows us to call
ci_udc_unregister() only when we actually registered one before.

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