Commit graph

145 commits

Author SHA1 Message Date
Simon Glass
45a26867e8 dm: core: Update device_bind_driver_to_node() to use ofnode
Adjust this function to us an ofnode instead of an offset, so it can be
used with livetree. This involves updating all callers.

Signed-off-by: Simon Glass <sjg@chromium.org>
2017-06-01 07:03:08 -06:00
Simon Glass
a821c4af79 dm: Rename dev_addr..() functions
These support the flat device tree. We want to use the dev_read_..()
prefix for functions that support both flat tree and live tree. So rename
the existing functions to avoid confusion.

In the end we will have:

   1. dev_read_addr...()    - works on devices, supports flat/live tree
   2. devfdt_get_addr...()  - current functions, flat tree only
   3. of_get_address() etc. - new functions, live tree only

All drivers will be written to use 1. That function will in turn call
either 2 or 3 depending on whether the flat or live tree is in use.

Note this involves changing some dead code - the imx_lpi2c.c file.

Signed-off-by: Simon Glass <sjg@chromium.org>
2017-06-01 07:03:01 -06:00
Simon Glass
9d922450aa dm: Use dm.h header when driver mode is used
This header includes things that are needed to make driver build. Adjust
existing users to include that always, even if other dm/ includes are
present

Signed-off-by: Simon Glass <sjg@chromium.org>
2017-06-01 06:57:52 -06:00
Tom Rini
77777f769f omap4: Drop redundant CONFIG_OMAP4430 symbol
While there are a few different OMAP4 SoCs, today we always set
CONFIG_OMAP4430 and CONFIG_OMAP44XX.  Convert the few test of
CONFIG_OMAP4430 to CONFIG_OMAP44XX.

Cc: Marek Vasut <marex@denx.de>
Cc: Paul Kocialkowski <contact@paulk.fr>
Signed-off-by: Tom Rini <trini@konsulko.com>
2017-05-15 10:39:59 -04:00
Heinrich Schuchardt
2511b2ed4d musb: properly detect failed initialization of controller
We want to check the result of musb_init_controller
and not the address were the result is stored.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2017-04-25 12:50:11 +02:00
Tom Rini
ea3310e8aa Blackfin: Remove
The architecture is currently unmaintained, remove.

Cc: Benjamin Matthews <mben12@gmail.com>
Cc: Chong Huang <chuang@ucrobotics.com>
Cc: Dimitar Penev <dpn@switchfin.org>
Cc: Haitao Zhang <hzhang@ucrobotics.com>
Cc: I-SYST Micromodule <support@i-syst.com>
Cc: M.Hasewinkel (MHA) <info@ssv-embedded.de>
Cc: Marek Vasut <marex@denx.de>
Cc: Martin Strubel <strubel@section5.ch>
Cc: Peter Meerwald <devel@bct-electronic.com>
Cc: Sonic Zhang <sonic.adi@gmail.com>
Cc: Valentin Yakovenkov <yakovenkov@niistt.ru>
Cc: Wojtek Skulski <info@skutek.com>
Cc: Wojtek Skulski <skulski@pas.rochester.edu>
Signed-off-by: Tom Rini <trini@konsulko.com>
2017-04-05 13:52:01 -04:00
Simon Glass
e160f7d430 dm: core: Replace of_offset with accessor
At present devices use a simple integer offset to record the device tree
node associated with the device. In preparation for supporting a live
device tree, which uses a node pointer instead, refactor existing code to
access this field through an inline function.

Signed-off-by: Simon Glass <sjg@chromium.org>
2017-02-08 06:12:14 -07:00
Mugunthan V N
ae6acf9fe2 drivers: usb: musb: add ti musb host driver with driver model support
Add a TI MUSB host driver with driver model support and the
driver will be bound by the MUSB wrapper driver based on the
dr_mode device tree entry.

Signed-off-by: Mugunthan V N <mugunthanvnm@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
2016-12-02 21:04:48 -07:00
Mugunthan V N
1cac34ce16 drivers: usb: musb: adopt musb backend driver to driver model
Currently all backend driver ops uses hard coded physical
address, so to adopt the driver to DM, add device pointer to ops
call backs so that drivers can get physical addresses from the
usb driver priv/plat data.

Signed-off-by: Mugunthan V N <mugunthanvnm@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
2016-12-02 21:04:48 -07:00
Mugunthan V N
28b8d5fd2b drivers: usb: musb: add ti musb misc driver for wrapper
Add a misc driver for MUSB wrapper, so that based on dr_mode the
USB devices can bind to USB host or USB device drivers.

Signed-off-by: Mugunthan V N <mugunthanvnm@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
2016-12-02 21:03:56 -07:00
Masahiro Yamada
1221ce459d treewide: replace #include <asm/errno.h> with <linux/errno.h>
Now, arch/${ARCH}/include/asm/errno.h and include/linux/errno.h have
the same content.  (both just wrap <asm-generic/errno.h>)

Replace all include directives for <asm/errno.h> with <linux/errno.h>.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
[trini: Fixup include/clk.]
Signed-off-by: Tom Rini <trini@konsulko.com>
2016-09-23 17:55:42 -04:00
Hans de Goede
7c22e26ec5 sunxi: musb: Re-init musb controller on repeated probe calls
With sunxi-musb musb_lowlevel_init() can fail when a charger; or no cable
is plugged into the otg port.

To avoid leaking the struct musb allocated by musb_init_controller()
on repeated musb_usb_probe() calls, we were caching its result.
But musb_init_controller() does more, such as calling sunxi_musb_init()
which enables the clocks.

Not calling sunxi_musb_init() causes the musb controller to stop working
after a "usb reset" since that calls musb_usb_remove() which disables the
clocks.

This commit fixes this by removing the caching of the struct returned
from musb_init_controller(), it replaces this by free-ing the allocated
memory in musb_usb_remove() and calling musb_usb_remove() on
musb_usb_probe() errors to ensure proper cleanup.

While at it also make musb_usb_probe() and musb_usb_remove() static.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
2016-09-18 14:39:16 +02:00
Chen-Yu Tsai
57075a472a sunxi: musb: Power off OTG port VBUS when disabled
The Linux kernel musb driver expects VBUS to be off while initializing
musb. Having it on results in a repeating string of warnings, followed
by an unusable peripheral. The peripheral is only usable after
physically removing the OTG adapter, letting musb reset its state.

This partially reverts commit c9f8947e66 ("sunxi: usb-phy: Never
power off the usb ports")

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
2016-09-17 14:37:40 +02:00
Robert P. J. Day
62a3b7dd08 Various, unrelated tree-wide typo fixes.
Fix a number of typos, including:

     * "compatble" -> "compatible"
     * "eanbeld" -> "enabled"
     * "envrionment" -> "environment"
     * "FTD" -> "FDT" (for "flattened device tree")
     * "ommitted" -> "omitted"
     * "overriden" -> "overridden"
     * "partiton" -> "partition"
     * "propogate" -> "propagate"
     * "resourse" -> "resource"
     * "rest in piece" -> "rest in peace"
     * "suport" -> "support"
     * "varible" -> "variable"

Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca>
2016-07-16 09:43:12 -04:00
Hans de Goede
bca4c3c5fc sunxi: musb: Properly turn of musb controller before booting
Turn of the clock and assert the reset when musb_stop gets called, so that
the os gets the musb controller in a pristine state. This fixes a spurious
VBus error interrupt triggering as soon as the Linux musb driver loads.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
2016-06-10 12:09:38 +02:00
Sam Protsenko
3457bbaf22 usb: gadget: Move CONFIG_USB_GADGET_DUALSPEED to Kconfig
Move CONFIG_USB_GADGET_DUALSPEED option to Kconfig and
make all UDC controllers select USB_GADGET_DUALSPEED:
  - add next options to Kconfig selecting USB_GADGET_DUALSPEED:
    - USB_GADGET_ATMEL_USBA
    - USB_GADGET_DWC2_OTG
    - USB_DWC3
    - CI_UDC
  - make USB_MUSB_GADGET select USB_GADGET_DUALSPEED

While at it, make some related fixes:
  - remove DUALSPEED from configs that don't enable gadget support:
    - kwb.h
    - tseries.h
  - add missing USB_GADGET option to next configs:
    - novena_defconfig
    - pcm051_rev*_defconfig
    - xfi3_defconfig

Signed-off-by: Sam Protsenko <semen.protsenko@linaro.org>
2016-04-20 11:43:27 +02:00
Hans de Goede
bf31323064 musb: Properly call musb_stop() on probe failure
musb_lowlevelinit(): if no device is plugged in / detected call
musb_stop() to undo the preceding musb_start() call.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
2016-04-10 17:18:43 +02:00
Hans de Goede
38b4a3e143 musb: sunxi: Do not allocate musb struct multiple times
The probe function of the musb host driver can be called multiple
times. The code assumes that it can save the pointer to the allocated
musb struct in the driver model priv_auto_alloc data, but this data
gets free-ed on a probe failure or on removal, so we must save the
pointer elsewhere.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
2016-04-10 17:18:43 +02:00
Purna Chandra Mandal
03b8e04632 drivers: musb-new: Add USB DRC driver for Microchip PIC32 OTG controller.
This driver adds support of PIC32 MUSB OTG controller as dual role device.
It implements platform specific glue to reuse musb core.

Signed-off-by: Cristian Birsan <cristian.birsan@microchip.com>
Signed-off-by: Purna Chandra Mandal <purna.mandal@microchip.com>
2016-04-10 17:18:41 +02:00
Purna Chandra Mandal
6d9481047e drivers: remove writes{b,w,l,q} and reads{b,w,l,q}.
Definition of writes{bwlq}, reads{bwlq} are now added into arch specific
asm/io.h. So removing them from driver to fix re-definition error

Signed-off-by: Purna Chandra Mandal <purna.mandal@microchip.com>
2016-04-10 17:18:41 +02:00
Chen-Yu Tsai
96fccb175f musb: sunxi: Add support for A83T
Like the Allwinner A33 SoC, the A83T is missing the config register
from the musb USB DRD hardware block. Use a known working value for
it.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
2016-03-31 17:03:49 +02:00
Paul Kocialkowski
27754d18fc usb: musb-new: omap2430: OMAP4 MUSB USB controller support
This adds support for the OMAP4 MUSB USB controller, with a matching Linux
compat definition, TWL6030 USB device setup and USBOTGHS register setup.

Signed-off-by: Paul Kocialkowski <contact@paulk.fr>
2016-03-15 15:12:51 -04:00
Tom Rini
5b8031ccb4 Add more SPDX-License-Identifier tags
In a number of places we had wordings of the GPL (or LGPL in a few
cases) license text that were split in such a way that it wasn't caught
previously.  Convert all of these to the correct SPDX-License-Identifier
tag.

Signed-off-by: Tom Rini <trini@konsulko.com>
2016-01-19 08:31:21 -05:00
Stefan Brüns
ac3abf0b7d usb: musb: Fix hub port setting for SPLIT transactions
The ifdef'ed Linux kernel code uses the 1 based port number, whereas U-Boot
puts a 0 based port number into the register. The reason the 0 based port
number apparently works can probably be taken from the USB 2.0 spec:

8.4.2.2 Start-Split Transaction Token
... The host must correctly set the port field for single and multiple TT
hub implementations. A single TT hub implementation *may ignore* the port
field.

Actually, as far as I understand, a multi TT hub defaults to single TT
(bAlternateSetting: 0) until switched via SetInterface, so even "port 42"
would work.

The change was verified by hardcoding the port number to a wrong value,
SPLIT transactions kept working (although using a DWC2 instead of MUSB).
Tested hubs are the RPi onboard SMC9514 and an external "05e3:0608
Genesys Logic, Inc. USB-2.0 4-Port HUB". The former is a multi TT hub,
the latter single TT only.

Addendum: Tested on sunxi/MUSB by Hans de Goede

Signed-off-by: Stefan Brüns <stefan.bruens@rwth-aachen.de>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Tested-by: Hans de Goede <hdegoede@redhat.com>
2015-12-31 16:16:30 +01:00
Stefan Brüns
faa7db24a4 usb: Move determination of TT hub address/port into separate function
Start split and complete split tokens need the hub address and the
downstream port of the first HS hub (device view).

The core of the function was duplicated in both host/ehci_hcd and
musb-new/usb-compat.h.

Signed-off-by: Stefan Brüns <stefan.bruens@rwth-aachen.de>
Reviewed-by: Marek Vasut <marex@denx.de>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Tested-by: Hans de Goede <hdegoede@redhat.com>
2015-12-31 16:16:29 +01:00
Siarhei Siamashka
6047a3a9c9 sunxi: musb: Implement dfu_usb_get_reset()
This is necessary to distinguish between the "dfu-util --detach" and
the "dfu-util --reset" requests.

The default weak implementation of dfu_usb_get_reset() unconditionally
reboots the device, but we want to be able to continue the boot.scr
execution after writing the kernel, fdt and ramdisk to RAM via DFU.

Signed-off-by: Siarhei Siamashka <siarhei.siamashka@gmail.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
2015-11-22 11:30:59 +01:00
Simon Glass
24b852a7a2 Move console definitions into a new console.h file
The console includes a global variable and several functions that are only
used by a small subset of U-Boot files. Before adding more functions, move
the definitions into their own header file.

Signed-off-by: Simon Glass <sjg@chromium.org>
2015-11-19 20:27:50 -07:00
Tom Rini
da58dec866 Various Makefiles: Add SPDX-License-Identifier tags
After consulting with some of the SPDX team, the conclusion is that
Makefiles are worth adding SPDX-License-Identifier tags too, and most of
ours have one.  This adds tags to ones that lack them and converts a few
that had full (or in one case, very partial) license blobs into the
equivalent tag.

Cc: Kate Stewart <kstewart@linuxfoundation.org>
Signed-off-by: Tom Rini <trini@konsulko.com>
2015-11-10 09:19:52 -05:00
Simon Glass
bcbe3d1579 dm: Rename dev_get_parentdata() to dev_get_parent_priv()
The current name is inconsistent with other driver model data access
functions. Rename it and fix up all users.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Joe Hershberger <joe.hershberger@ni.com>
2015-10-23 09:42:28 -06:00
Stefan Roese
68282f55b8 arm: Remove unused ST-Ericsson u8500 arch
This arch does not seem to be supported / used at all in the current
U-Boot mainline source tree any more. So lets remove the core u8500 code
and code that was only referenced by this platform.

Please note that this patch also removes these config options:

- CONFIG_PL011_SERIAL_RLCR
- CONFIG_PL011_SERIAL_FLUSH_ON_INIT

As they only seem to be referenced by u8500 based boards. Without any
such board in the current code, these config option don't make sense
any more. Lets remove them as well.

If someone still wants to use this platform, then please send patches
to re-enable support by adding at least one board that references this
code.

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Cc: John Rigby <john.rigby@linaro.org>
Cc: Simon Glass <sjg@chromium.org>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Tom Rini <trini@konsulko.com>
Cc: Heiko Schocher <hs@denx.de>
Cc: Albert Aribaud <albert.u.boot@aribaud.net>
Reviewed-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2015-09-15 15:05:21 -04:00
Hans de Goede
7806b75a05 sunxi: musb: Drop no longer accurate comment in Kconfig help text
Drop the no longer accurate part of the USB_MUSB_SUNXI Kconfig help text,
since the musb-host code now supports the device-model, ehci and musb in
host mode can both be enabled at the same time without issues.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
2015-08-31 08:43:41 +02:00
Hans de Goede
c9f8947e66 sunxi: usb-phy: Never power off the usb ports
USB devices are not really designed to get the power bounced off and on
at them. Esp. USB powered harddisks do not like this.

Currently we power off the USB ports both on a "usb reset" and when
booting the kernel, causing the usb-power to bounce off and then back
on again.

This patch removes the powering off calls, fixing the undesirable power
bouncing.

Note this requires some special handling for the OTG port:
1) We must skip the external vbus check if we've already enabled our own
vbus to avoid false positives
2) If on an usb reset we no longer detect that the id-pin is grounded, turn
off vbus as that means an external vbus may be present now

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
2015-08-08 16:26:19 +02:00
Maxime Ripard
1feda63ed9 musb: sunxi: Force EP0 on re-enable
Currently, the second use of a gadget will fail, while the first one works.

Forcing the EP0 at every enable fix this issue.

Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
2015-08-05 17:20:34 +02:00
Paul Kocialkowski
6bed24cc62 sunxi: usb: USB_MUSB_SUNXI move to musb-new Kconfig
Now that the musb-new driver has a Kconfig, we can move Kconfig options to
enable controllers to it, so that it's easier in e.g. menuconfig.

In addition, this allows declaring support for USB_MUSB_HOST/GADGET in
defconfigs instead of the USB_MUSB_SUNXI controller, that will get selected
automatically when needed.

Signed-off-by: Paul Kocialkowski <contact@paulk.fr>
2015-08-05 17:20:34 +02:00
Paul Kocialkowski
5d6c2f4b5a usb: musb-new: Kconfig support for USB_MUSB_HOST and USB_MUSB_GADGET
Having MUSB_HOST and MUSB_GADGET in Kconfig allows more flexibility with regard
to what Kconfig options to enable, such as USB_STORAGE or USB_KEYBOARD.

Signed-off-by: Paul Kocialkowski <contact@paulk.fr>
2015-08-05 17:20:34 +02:00
Paul Kocialkowski
95de1e2f26 usb: musb-new: CONFIG_MUSB prefix replacement with CONFIG_USB_MUSB
USB-related options are usually prefixed with CONFIG_USB and platform-specific
adaptation for the MUSB controller already have a CONFIG_USB_MUSB prefix, so
this switches all MUSB-related options to a CONFIG_USB_MUSB prefix, for
consistency.

Signed-off-by: Paul Kocialkowski <contact@paulk.fr>
2015-08-05 17:20:34 +02:00
Hans de Goede
9ecce9707b sunxi: musb: Stop treating not having a vbus-det gpio as an error
On some boards the otg is wired up in host-only mode in this case we
have no vbus-det gpio.

Stop logging an error from sunxi_usb_phy_vbus_detect() in this case, and
stop treating sunxi_usb_phy_vbus_detect() returning a negative errno, as
if a charger is plugged into the otg port.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Marek Vasut <marex@denx.de>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
2015-07-25 11:22:55 +02:00
Hans de Goede
56a2085410 sunxi: musb: Improve output during probing
When we return an error the usb core will print an error-message, so in this
case do not print anything.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Marek Vasut <marex@denx.de>
Acked-by: Ian Campbell <ian.campbell@citrix.com>
2015-07-25 11:22:55 +02:00
Hans de Goede
91183babea sunxi: musb: Use device-model for musb host mode
Modify the sunxi musb glue to use the device-model for musb host mode.

This allows using musb in host mode together with other host drivers
such as ehci / ohci, which is esp. useful on boards which use the
musb controller in host-only mode, these boards have e.g. an usb-a
receptacle or an usb to sata converter attached to the musb controller.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
2015-07-25 11:22:55 +02:00
Hans de Goede
d42faf3198 sunxi: musb: Move musb config and platdata to the sunxi-musb glue
Move the musb config and platdata to the sunxi-musb glue, which is where
it really belongs. This is preparation patch for adding device-model
support for the sunxi-musb-host code.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
2015-07-25 11:22:55 +02:00
Hans de Goede
71cbe0d681 sunxi: musb: Add id pin support
When in host mode check if there is a host cable inserted into the otg
port by checking the id pin. If there is no host cable return an error to
make usb_lowlevel_init() exit early, rather then waiting for 1 second
for a device which will never show up.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
2015-07-25 11:22:55 +02:00
Hans de Goede
b41972e7d1 sunxi: musb: Move vbus check to sunxi_musb_enable
This way it can be re-checked on "usb reset".

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
2015-07-25 11:22:54 +02:00
Masahiro Yamada
3721eaf28e linux_compat: remove cpu_relax() define
The macro cpu_relax() is defined by several headers in different
ways.

arch/{arm,avr32,mips}/include/asm/processor.h defines it as follows:
  #define cpu_relax()	barrier()

On the other hand, include/linux/compat.h defines it as follows:
  #define cpu_relax() do {} while (0)

If both headers are included from the same source file, the warning
  warning: "cpu_relax" redefined [enabled by default]
is displayed.

It effectively makes it impossible to include <linux/compat.h>
from some sources.  Drop the latter.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Heiko Schocher <hs@denx.de>
Acked-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Lukasz Majewski <l.majewski@samsung.com>
2015-07-22 07:30:37 -06:00
Hans de Goede
09e7ea47e7 musb: Add device-model support to the musb-host u-boot glue
Add device-model support to the musb-host u-boot glue, note this only
adds device-model support to the musb-core glue code, it does not add
support for device-model to any of the SoC specific musb glue code.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Simon Glass <sjg@chromium.org>
2015-07-21 17:39:38 -06:00
Hans de Goede
fc85d39e79 musb: Add musb_host_data struct to hold global data
Add a musb_host_data struct to hold all the global data host related musb
data. This is a preparation patch for adding device-model support.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Simon Glass <sjg@chromium.org>
2015-07-21 17:39:37 -06:00
Hans de Goede
1398252abf musb: Rename and wrap public functions
Rename and wrap the usb host API public functions, this is a preparation
patch for adding device-model support.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Simon Glass <sjg@chromium.org>
2015-07-21 17:39:37 -06:00
Hans de Goede
e740ca3cab musb: Update usb-compat to work with struct usb_device without a parent ptr
When building with CONFIG_DM_USB=y struct usb_device does not have a parent
pointer. This commit adds support to the musb code to deal with this.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Simon Glass <sjg@chromium.org>
2015-07-21 17:39:37 -06:00
Hans de Goede
1583723638 musb: Allow musb_platform_enable to return an error code
Allow musb_platform_enable to return an error code and propagate it up to
usb_lowlevel_init().

This allows moving the checks for an external vbus being present to be
moved from platform_init to platform_enable, so that the user can unplug a
charger, plug in a host adapter with a usb-device, do a "usb reset" and
have things working.

This also allows adding a check for the id-pin to platform_enable, so that
it can short circuit the 1s delay in usb_lowlevel_init() when no host cable
is plugged in and thus waiting for a device to show up is useless.

Note that all the changes to code shared with the kernel are wrapped in
the kernel.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Simon Glass <sjg@chromium.org>
2015-07-21 17:39:37 -06:00
Hans de Goede
8802f56349 usb: Add an usb_device parameter to usb_reset_root_port
Add an usb_device parameter to usb_reset_root_port so that it knows which
root-port it is resetting. This is necessary for proper device-model support
for usb_reset_root_port.

Also remove a duplicate declaration of usb_reset_root_port() from usb.h .

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Simon Glass <sjg@chromium.org>
2015-07-21 17:39:35 -06:00
Hans de Goede
998b8ab3f6 sunxi: musb: Remove unused sunxi_musb_exit method
Remove the unused sunxi_musb_exit method, there is no code in u-boot
calling the exit method, and our implementation was broken as it did
not disable the clocks and asserted reset.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
2015-06-17 15:22:42 +02:00
Hans de Goede
e1abfa437a sunxi: musb: Do not fully reset the controler from sunxi_musb_disable
Fully resetting the controller is a too big hammer, and the musb_core will
then afterwards fail to communicate with any endpoints other then 0 as
too much state was cleared.

Instead report vbus low for 200ms which will effectively end the current
session without needing to do a full reset.

This fixes usb mass-storage devices no longer working after a "usb reset"

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
2015-06-17 15:22:07 +02:00
Hans de Goede
e13afeef6f sunxi: usb: Do not call phy_probe from hcd code
The 2/3 usb-phys on the sunxi SoCs are really a single separate functional
block, and are modelled as such in devicetree. So once we've moved all the
sunxi usb code to the driver-model then phy_probe will be called once
for the entire block from the driver-model enumeration code.

Move to this now as this also avoids problems with phy_probe being called
multiple times once we introduce ohci support. This also allows us to get rid
of the sunxi_usb_phy_enabled_count variable as phy_probe now is guaranteed
to be called only once.

Since we're effectively rewriting the probe / remove functions, move them
to the end of the file while we are at it, as that is the most logical place
for them.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
2015-05-04 16:51:55 +02:00
Hans de Goede
2aacc4239c sunxi: usb: Rename the usbc.? files to usb_phy.?
The usbc.? files now only contain usb-phy related code, rename them to make
this clear.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
2015-05-04 16:51:55 +02:00
Hans de Goede
7b798658b2 sunxi: usb: Rename sunxi_usbc_foo functions to sunxi_usb_phy_bar
Rename the sunxi_usbc_foo functions to sunxi_usb_phy_bar to make it clear
that these are usb-phy functions. Also change the verbs & nouns in the suffix
to match the verbs & nouns used in the Linux kernels generic phy framework.

This patch purely renames things, it contains no functional changes.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
2015-05-04 16:51:55 +02:00
Hans de Goede
375de01702 sunxi: usb: Move setup of host controller clocks to the host controller drivers
The sunxi "usbc" code is mostly about phy setup, but currently also sets up
the host controller clocks, which is something which really belongs in the
host controller drivers, so move it there.

This is a preparation patch for moving the sunxi ehci code to the driver
model and for adding ohci support.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
2015-05-04 16:51:54 +02:00
Vishnu Patekar
8c3dacff14 sunxi: Add basic A33 basic support
Enable full support for the A33 SoC including display, otg-usb, etc.

Signed-off-by: Vishnu Patekar <vishnupatekar0510@gmail.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
2015-05-04 16:51:51 +02:00
Simon Glass
de31213fb8 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>
2015-04-18 11:11:20 -06:00
Tom Rini
20913018fb Merge branch 'master' of http://git.denx.de/u-boot-sunxi 2015-04-16 12:51:23 -04:00
Paul Kocialkowski
ebd468b2d2 sunxi: common VBUS detection logic in usbc
VBUS detection could be needed not only by the musb code (to prevent host mode),
but also by e.g. gadget drivers to start only when a cable is connected.

In addition, this allows more flexibility in vbus detection, as it could easily
be extended to other USBC indexes. Eventually, this would help making musb
support independent from a hardcoded USB controller index (0).

Signed-off-by: Paul Kocialkowski <contact@paulk.fr>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
2015-04-15 16:17:17 +02:00
Paul Kocialkowski
5eaacb4340 sunxi: usb: Drop AXP-sepcific VBUS detection and drive logic
VBUS detection and enable is now be used with virtual AXP GPIOs, so all the USB
code has to use GPIO in every case and let sunxi_gpio do the heavy lifting.

Signed-off-by: Paul Kocialkowski <contact@paulk.fr>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
2015-04-15 16:17:17 +02:00
Kishon Vijay Abraham I
2d48aa69bd usb: modify usb_gadget_handle_interrupts to take controller index
Since we support multiple dwc3 controllers to be existent at the same
time, in order to handle the interrupts of a particular dwc3 controller
usb_gadget_handle_interrutps should take controller index as an
argument.

Hence the API of usb_gadget_handle_interrupts is modified to take
controller index as an argument and made the corresponding changes to all
the usb_gadget_handle_interrupts calls.

Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Reviewed-by: Lukasz Majewski <l.majewski@samsung.com>
2015-04-14 05:48:11 +02:00
Hans de Goede
246e3b8787 sunxi: musb: Fix some lo speed devices not working with musb host
The usb0 / otg phy on sunxi boards has a bug where it wrongly detects a
high speed squelch on usb reset deassert when a lo speed device is plugged in.

The android kernel has a work around for this in the form of temporary
disabling the phy's squelch detection on reset deassert, this commit adds
the same workaround to the u-boot sunxi musb code, thereby fixing various usb
lo speed devices not working.

Tested with a (before non working) usb keyboard and a usb 2.4 GHz wireless
keyboard/mouse combo receiver.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
2015-03-29 12:58:59 +02:00
Paul Kocialkowski
8a440b09f2 sunxi: musb: Return early on VBUS GPIO error instead of on a positive value
This allows printing the error message when VBUS is detected, as it would with
AXP VBUS detect.

Signed-off-by: Paul Kocialkowski <contact@paulk.fr>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
2015-03-21 13:51:27 +01:00
Chen-Yu Tsai
e42add561b sunxi: musb: Support checking VBUS using AXP221 PMIC
This enables the musb glue layer to use the AXP221's VBUS detection
function to check for VBUS. This fixes otg support on the A23 q8h
tablets.

Note that u-boot never calls musb_shutdown(), so once VBUS is enabled,
it is never disabled until the system is powered off, or the OS does
so. This can be used to our advantage to keep VBUS powered into the
OS, where support for AXP221 is not available yet.

Fixes: 52defe8f65 ("sunxi: musb: Check Vbus-det before enabling otg port power")
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
2015-03-10 15:20:25 +01:00
Paul Kocialkowski
193d7d1530 usb: musb-new: omap2430: Reset the MUSB controller early
When booting from USB peripheral boot, the bootrom will not properly deinit the
MUSB controller, which doesn't clearly indicate an USB disconnection to the host
and leaves U-Boot to deal with the state of the previous USB session.

On some host controller drivers (e.g. xhci_hcd), this ends up in a failure
during set address, caused by the lack of proper disconnection notification.

Resetting the controller early in U-Boot notifies the host of the disconnection
and doesn't hurt other use cases.

Signed-off-by: Paul Kocialkowski <contact@paulk.fr>
Reviewed-by: Tom Rini <trini@ti.com>
2015-02-24 18:54:03 +01:00
Hans de Goede
52defe8f65 sunxi: musb: Check Vbus-det before enabling otg port power
Sending out 5V when there is a charger connected to the otg port is not a
good idea, so check for this and error out.

Note this commit currently breaks otg support on the q8h tablets, as we need
to do some magic with the pmic there to get vbus info, this is deliberate
(better safe then sorry), fixing this is on my TODO list.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
2015-02-21 16:53:33 +01:00
Hans de Goede
b1b912ddf3 sunxi: otg: Fix peripheral mode
Peripheral mode needs us to signal vusb high to the phy for it to work,
just like the host mode does.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
2015-02-16 20:05:52 +01:00
Hans de Goede
904f2a83a8 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>
2015-01-18 12:31:36 +01:00
Hans de Goede
accf04c2aa musb-new: Add urb and hep parameters to construct_urb
Make construct_urb take an urb and hep parameter, rather then having it always
operate on the file global urb and hep structs. This is a preperation patch
for adding interrupt queue support.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
2015-01-18 12:31:36 +01:00
Hans de Goede
b918a0c6f6 musb-new: Properly remove a transfer from the schedule on timeout
If a transfer / urb times-out, properly remove it from the schedule, rather
then letting it sit on the ep head. This stops the musb code from getting
confused and refusing to queue further transfers after a timeout.

Tested by unplugging a usb-keyboard, replugging it and doing a usb-reset,
before this commit the keyboard would not work after the usb-reset.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
2015-01-18 12:31:36 +01:00
Hans de Goede
90cdc1039d 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>
2015-01-18 12:31:36 +01:00
Hans de Goede
e8672e3f0e musb-new: Fix interrupt transfers not working
For bulk and ctrl transfers common/usb.c sets udev->status = USB_ST_NOT_PROC,
but it does not do so for interrupt transfers.

musb_uboot.c: submit_urb() however was waiting for USB_ST_NOT_PROC to become 0,
and thus without anyone setting USB_ST_NOT_PROC would exit immediately for
interrupt urbs, returning the urb status of EINPROGRESS as error.

This commit fixes this, thereby also making usb_kbd.c work together with
musb_new and CONFIG_SYS_USB_EVENT_POLL.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
2015-01-18 12:31:36 +01:00
Hans de Goede
dc9a391270 musb-new: Use time based timeouts rather then cpu-cycles based timeouts
CPU cycle based timeouts are no good, because how long they use depends on
CPU speed. Instead use time based timeouts, and wait one second for a
device connection to show up (per the USB spec), and wait USB_TIMEOUT_MS
for various urbs to complete.

This fixes "usb start" taking for ever when no device is plugged into the
otg port.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
2015-01-18 12:31:36 +01:00
Hans de Goede
28a15ef7fd 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>
2015-01-18 12:31:36 +01:00
Hans de Goede
0f8bc53240 musb-new: Add register defines for different reg layout on sunxi
The sunxi SoCs also have a musb controller, but with a different register
layout.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
2015-01-18 12:31:36 +01:00
Daniel Mack
16b61d13ba usb: musb-new: core: set MUSB_POWER_HSENAB in MUSB_POWER for host mode
This bit allows the MUSB controller to negotiate for high-speed mode when
the device is reset by the hub. If unset, Babble errors occur with
high-speed mass storage devices right after the first packet. This condition
is not caught by the interrupt handles in U-Boot, so no recovery is done,
and the USB communication is stuck.

To fix this, set the bit unconditionally, not only for
CONFIG_USB_GADGET_DUALSPEED but also for host-only modes.

Signed-off-by: Daniel Mack <zonque@gmail.com>
2014-10-06 21:04:44 +02:00
Masahiro Yamada
3b61297024 kbuild: force to define __UBOOT__ in all the C sources
U-Boot has imported various source files from other projects,
mostly Linux.

Something like

  #ifdef __UBOOT__
    [ modification for U-Boot ]
  #else
    [ original code ]
  #endif

is an often used strategy for clarification of adjusted parts,
that is, easier re-sync in future.

Instead of defining __UBOOT__ in each source file,
passing it from the top Makefile would be easier.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Acked-by: Marek Vasut <marex@denx.de>
Acked-by: Heiko Schocher <hs@denx.de>
2014-09-16 12:23:56 -04:00
Heiko Schocher
0c06db5983 lib, linux: move linux specific defines to linux/compat.h
- move linux specific defines from usb and video code
  into linux/compat.h
- move common linux specific defines from include/ubi_uboot.h
  to linux/compat.h
- add for new mtd/ubi/ubifs sync new needed linux specific
  defines to linux/compat.h

Signed-off-by: Heiko Schocher <hs@denx.de>
Cc: Marek Vasut <marex@denx.de>
Cc: Anatolij Gustschin <agust@denx.de>
[trini: Add spin_lock_irqsave/spin_unlock_irqrestore dummies from
usb/lin_gadet_compat.h]
Signed-off-by: Tom Rini <trini@ti.com>
2014-08-25 19:25:03 -04:00
Heiko Schocher
ab2f5c12f7 musb-new, dfu: first send request answer then call completions
comment in ep0_txstate() states:

"report completions as soon as the fifo's loaded; there's no win
 in waiting till this last packet gets acked".

This is wrong for using dfu. In the dfu usecase we must send
a PollTimeout to the host, so the host can wait until the
U-Boot Code is ready for answering new usb requests. So the
answer which contains the PollTimeout must send *before*
U-Boot calls req->complete.

The req->complete is used in the dfu case for flushing the
medium, when entering DFU_STATE_dfuMANIFEST_SYNC state.

Change-Id: Ib2941119c72761e48e15fedbdad1ecce07ae0b3d
Signed-off-by: Heiko Schocher <hs@denx.de>
Cc: Kyungmin Park <kyungmin.park@samsung.com>
Cc: Marek Vasut <marex@denx.de>
Cc: Pantelis Antoniou <panto@antoniou-consulting.com>
Acked-by: Marek Vasut <marex@denx.de>
Acked-by: Lukasz Majewski <l.majewski@samsung.com>
2014-05-08 10:38:30 +02:00
Rob Herring
078d7302ac usb: musb: fill in usb_gadget_unregister_driver
Add missing missing disconnect and unbind calls to the musb gadget driver's
usb_gadget_unregister_driver function. Otherwise, any gadget drivers fail
to uninitialize and run a 2nd time.

Signed-off-by: Rob Herring <robh@kernel.org>
2014-04-30 10:30:57 +02:00
Masahiro Yamada
6825a95b0b kbuild: use Linux Kernel build scripts
Now we are ready to switch over to real Kbuild.

This commit disables temporary scripts:
  scripts/{Makefile.build.tmp, Makefile.host.tmp}
and enables real Kbuild scripts:
  scripts/{Makefile.build,Makefile.host,Makefile.lib}.

This switch is triggered by the line in scripts/Kbuild.include
  -build := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.build.tmp obj
  +build := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.build obj

We need to adjust some build scripts for U-Boot.
But smaller amount of modification is preferable.

Additionally, we need to fix compiler flags which are
locally added or removed.

In Kbuild, it is not allowed to change CFLAGS locally.
Instead, ccflags-y, asflags-y, cppflags-y,
CFLAGS_$(basetarget).o, CFLAGS_REMOVE_$(basetarget).o
are prepared for that purpose.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Tested-by: Gerhard Sittig <gsi@denx.de>
2014-02-19 11:07:50 -05:00
Masahiro Yamada
44e32c7144 drivers: usb: convert makefiles to Kbuild style
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
2013-10-31 13:25:38 -04:00
Troy Kisky
06d513ecb6 usb: add enum usb_init_type parameter to usb_lowlevel_init
This parameter will later be used to verify OTG ports.

Signed-off-by: Troy Kisky <troy.kisky@boundarydevices.com>
2013-10-20 23:45:26 +02:00
Wolfgang Denk
d4c8aa9cb4 Coding Style cleanup: remove trailing empty lines
Signed-off-by: Wolfgang Denk <wd@denx.de>
2013-10-14 16:06:54 -04:00
Wu, Josh
2f96b06be5 linux/compat.h: move dev_err, dev_info and dev_dbg from usb driver to compat.h
Since kernel code current use many dev_xxx() instead of using printk. To
compatible, move those dev_xxx from usb driver to linux/compat.h. Then all
driver code can use dev_err, dev_info and dev_vdbg.

This patch also removed duplicated macro definitions in usb driver.

Signed-off-by: Josh Wu <josh.wu@atmel.com>
Acked-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Andreas Bießmann <andreas.devel@googlemail.com>
2013-08-22 16:50:29 +02:00
Lokesh Vutla
32f420b8ec musb: Disable extra prints
There are many musb prints in SPL and U-Boot log.
These prints are required only during musb debug.
So replacing printk with pr_debug in musb_core.

Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Tested-by: Heiko Schocher <hs@denx.de>
Acked-by: Heiko Schocher <hs@denx.de>
2013-08-15 08:51:10 -04:00
Heiko Schocher
7a34278542 usb, musb-new: add wdt trigger
Signed-off-by: Heiko Schocher <hs@denx.de>
Cc: Marek Vasut <marek.vasut@gmail.com>
Cc: Ilya Yanok <ilya.yanok@cogentembedded.com>
2013-06-30 18:41:07 +02:00
Albert ARIBAUD
1812201997 Merge branch 'u-boot/master' into 'u-boot-arm/master'
Conflicts:
	drivers/video/exynos_fb.c
2013-04-12 22:07:57 +02:00
Bin Liu
76b09b8561 musb: set MUSB speed based on CONFIG
Do not config MUSB to highspeed mode if CONFIG_USB_GADGET_DUALSPEED
is not set, in which case Ether gadget only operates in fullspeed.

Reviewed-by: Tom Rini <trini@ti.com>
Signed-off-by: Bin Liu <b-liu@ti.com>
2013-04-08 11:29:04 -04:00
Bin Liu
4de602f2b0 musb: am335x: disable bulk split-combine feature
On TI AM335x devices, MUSB has bulk split/combine feature enabled
in the ConfigData register, but the current MUSB driver does not
support it yet. Therefore, disable the feature for now, until the
driver adds the support.

One usecase which is broken because of this feature is that Ether
gadget stops working in Fullspeed mode (by un-defining
CONFIG_USB_GADGET_DUALSPEED)

After desabled this feature, MUSB driver send packets in proper size
(no more than 64 bytes) in Fullspeed mode.

This has been validated with Ether gadget in Fullspeed mode on AM335x
EVM.

Signed-off-by: Bin Liu <b-liu@ti.com>
2013-04-08 11:29:04 -04:00
York Sun
472d546054 Consolidate bool type
'bool' is defined in random places. This patch consolidates them into a
single header file include/linux/types.h, using stdbool.h introduced in C99.

All other #define, typedef and enum are removed. They are all consistent with
true = 1, false = 0.

Replace FALSE, False with false. Replace TRUE, True with true.
Skip *.py, *.php, lib/* files.

Signed-off-by: York Sun <yorksun@freescale.com>
2013-04-01 16:33:52 -04:00
Ilya Yanok
673a524b6a musb-new: omap2plus backend driver
Backend driver for MUSB OTG controllers found on TI OMAP2/3/4
(tested only on OMAP3 Beagle).

Signed-off-by: Ilya Yanok <ilya.yanok@cogentembedded.com>
2012-11-20 00:16:08 +01:00
Ilya Yanok
833a53c627 musb-new: am35x backend driver
Backend driver for MUSB OTG controllers found on TI AM35x.

It seems that on AM35X interrupt status registers can be updated
_before_ core registers. As we don't use true interrupts in U-Boot
and poll interrupt status registers instead this can result in
interrupt handler being called with non-updated core registers.
This confuses the code and result in hanged transfers.
Add a small delay in am35x_interrupt as a workaround.

Signed-off-by: Ilya Yanok <ilya.yanok@cogentembedded.com>
2012-11-20 00:16:07 +01:00
Ilya Yanok
37931f02c2 musb-new: dsps backend driver
Backend driver for MUSB OTG controllers found on TI AM33xx and
TI81xx SoCs (tested with AM33xx only).

Signed-off-by: Ilya Yanok <ilya.yanok@cogentembedded.com>
2012-11-20 00:16:06 +01:00
Ilya Yanok
eb81955bf0 musb-new: port of Linux musb driver
Existing U-Boot musb driver has no support for the new gadget framework
and also seems to have other limitations. As gadget framework is ported
from Linux it seems pretty natural to port musb gadget driver as well.

This driver supports both host and peripheral modes.

This is not a replacement for current musb driver (at least now) as
there are still some consumers of the old UDC interface.

No DMA operation support included, CONFIG_MUSB_PIO_ONLY should be
defined.

Virtual root hub device is not implemented.

Known problems: with no devices connected usb_lowlevel_start() fails.

Signed-off-by: Ilya Yanok <ilya.yanok@cogentembedded.com>
2012-11-20 00:16:06 +01:00