usb: hub: Do not power-cycle usb devices on init ...

This is an adoption of U-Boot commit 0834bb2fb0 ("usb: Do not power-cycle
usb devices on init")

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

usb: Pass portstatus/portchange to usb_hub_port_connect_change() ...

portstatus/portchange have just been read in usb_scan_port(), there
shouldn't be any need to read them again in
usb_hub_port_connect_change().

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

usb: Remove hack from the early days ...

The weird hack about "bad shielded USB devices" goes back to the initial
U-Boot git commmit. Let's be bold and remove it 18 years later.

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

usb: hub: let usb_scan_port() return void ...

usb_scan_port() never returns anything else but 0, so let it return
void.

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

usb: hub: do not reset devices twice ...

U-Boot has this since 3ed9eb93c2 ("usb: Don't reset the USB hub a 2nd
time"), so do the same for barebox.

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

usb: hub: Make debugging output more consistent ...

Some of the messages print the port they belong to, others don't. Print
the port consistently in all debugging messages. Also remove some stray
'\' in the messages.

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

Merge branch 'for-next/stm32'

Merge branch 'for-next/misc'

Merge branch 'for-next/imx'

Merge branch 'for-next/block'

usb: Add extra delay for device scan ...

Since b1d9837182, detection of various USB flash drives stopped working.
While the changes itself look correct, probably the HUB requires some
"recovery time" between the GET_STATUS commands in order to be able to
detect devices.

Our configuration: i.MX6ULL (USB-OTG) with only one port on the root
HUB. This port is connected to a Microchip USB4916 hub (permanently
attached). The USB4916 is configured with it's power on defaults which
means that bPwrOn2PwrGood is set to the maximum (0xFF = 510 ms).

Fixes: b1d9837182 ("usb: Change power-on / scanning timeout handling")
Signed-off-by: Christian Eggers <ceggers@arri.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

usb: host: ehci: distinguish DMA addresses ...

This patch adds translation from CPU to DMA addresses, which is required for
proper operation on certain architectures like MIPS.

This patch also fixes the bug introduced by 4350744bf5 "usb: ehci-hcd: port
periodic transactions implementation from the u-boot", which is still present
in the original U-Boot code:

	td->qt_buffer[0] =
		cpu_to_hc32((unsigned long)buffer + i * elementsize);
	td->qt_buffer[1] =
		cpu_to_hc32((td->qt_buffer[0] + 0x1000) & ~0xfff);
	...

In case of a big-endian CPU 0x1000 is added to the byte-swapped value
`td->qt_buffer[0]`, the result is byte swapped once again and stored to
`td->qt_buffer[1]`. This results in erroneous values being stored in
`td->qt_buffer[1..4]`.

N.B.: This patch needs some testing on architectures different from MIPS.

Signed-off-by: Peter Mamonov <pmamonov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

usb: gadget: fastboot: call discard_range for sparse files as well ...

We can save some time by explicitly telling the block layer that a range
is unused before overwriting it. This brought time my sample write
from 445s to 376s.

Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

USB: MUSB: defer driver probes where necessary ...

Kernel commit 0782e8572c ("ARM: dts: Probe am335x musb with ti-sysc")
which we pulled in during the v2020.02.0 dts/ sync moved the USB nodes
to be under a ti-sysc bus instead of ti,am33xx-usb.

This new probe order broke am335x USB under barebox, because the MUSB
drivers couldn't cope with the now different device probe order.

Pepper some -EPROBE_DEFER around to make USB work again.

Fixes: 574eed3f6f ("dts: update to v5.5-rc1")
Reported-by: Yegor Yefremov <yegorslists@googlemail.com>
Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Tested-by: Yegor Yefremov <yegorslists@googlemail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

USB: MUSB: PHY: scrap singleton am335x_get_usb_phy() ...

am335x_get_usb_phy() retrieves the last probed USB phy. On the BeagleBone
with both PHYs enabled, this means that dependent on probe order, both
MUSB instances could end up with the same PHY.

Remove the global variable and have the MUSB driver parse the "phys"
property instead.

The cleaner way to achieve this would be to migrate phy-am335x.c
and phy-am335x-control.c to the generic phy framework and have MUSB use
of_phy_get, alas, even Linux hasn't done this so far and we need
a short patch for master anyway, thus just do it the easy way.

Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Tested-by: Yegor Yefremov <yegorslists@googlemail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

phy: remove unused init_data parameter ...

Linux has since migrated to a new lookup API that lacks the init_data
parameter. As it's unused in barebox, follow suit.

Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

gadget: f_fastboot: New Kconfig option USB_GADGET_FASTBOOT_CMD_OEM ...

Most fastboot commands are suitable for a secure boot environment as
they only allow to download/flash/erase to files/partitions which were
explicitly specified in the usbgadget command.

The "oem" group of commands allows execution of arbitrary barebox
commands. This needs to be disabled for secure boot devices.

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

usb: imx: add i.MX8MM support for usbmisc ...

The i.MX8MM also has a usbmisc unit. It's the same as for the i.MX7d,
add the compatible entry for it.

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

usb: imx: Add i.MX8mm support ...

Only add the compatible string to let the driver match.

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

usb: gadget: fsl_udc: Fix warnings on 64bit compilation ...

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

usb: gadget: fsl_udc: Add PBL image loading support ...

For boards that do the RAM setup in code we can up to now only download
the PBL part to SRAM. This patch adds support for downloading the rest
of the image after the RAM has been configured.

The ROM is nice enough to leave the USB controller initialized after a
download, so we don't have to reinitialize it, but can simply continue to
use the controller. Like all two-staged loading processes on i.MX this
needs board support, it will only work when a board calls
imx_barebox_load_usb() or one of the SoC specific variants.

This needs the host counterpart in imx-usb-loader which is done in the
next patch.

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

USB: gadget: fsl_udc: move register definitions to header file ...

The register definitions will be shared by the regular and the
pbl driver, so move them to a header file.

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

Merge branch 'for-next/misc'

usb: gadget: fsl_udc: remove unnessary argument ...

fsl_build_dtd() returns the length of the dTD, but it is never used.
Remove the length argument from the function.

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

gadget: f_fastboot: Fix memory leak ...

bootm_data::os_file is not required to be a copied string. It isn't
freed anywhere.

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

Merge branch 'for-next/rpi'

usb: ehci: Do not use memset on dma coherent memory ...

memset is an optimized operation that at least on ARM64 may only be
called on cached memory, see 32e8842c40 ("ARM: lib64: Make string
functions aware of MMU configuration"). To avoid crashes in the ehci
driver we no longer call memset on memory allocated with
dma_alloc_coherent(), but use a simple memzero32 function instead.

Reported-by: Elmar Albert <EAlbert@data-modul.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

usb: Add dwc2 host driver ...

This adds a driver for the dwc2 controller in host mode. The driver is
taken from U-Boot-2019.10 and tested on a Raspberry Pi 3.

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

usb: Forward error code from usb_set_configuration ...

Instead of returning -1 forward the error code and take the opportunity
to print the error string.

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>