Convert USB descriptor's fields to CPU byte order before using locally in USB
NCM gadget driver.

Tested on MIPS32 big-endian device.
Signed-off-by: NDmytro Milinevskyy <milinevskyy@gmail.com>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

Checking skb->len against ETH_FRAME_LEN assumes a 1514
ethernet frame size. With an 802.1Q VLAN header, ethernet
frame length can now be 1518. Validate frame length against that.
Signed-off-by: NIan Coolidge <iancoolidge@gmail.com>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

This commit removes the /sys/devices/platform/<UDC>/udc/<UDC>/is_dualspeed
file and is_dualspeeed line from /sys/devices/platform/ci13xxx_*/udc/device
file.

The is_dualspeed file is superseded by maximum_speed in the same directory
and is_dualspeed line in device file is superseded by max_speed line in
the same file.

The maximum_speed/max_speed specifies maximum speed supported by UDC.
To check if dualspeeed is supported, check if the value is >= 3.
Signed-off-by: NMichal Nazarewicz <mina86@mina86.com>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

Since function-line macros are to be avoided, this commit replaces
the fsg_lun_is_open() macro with a static inline function.

While at it, this commit also adds “inline” modifier to the
fsg_lun_from_dev() function.
Signed-off-by: NMichal Nazarewicz <mina86@mina86.com>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

storage_common.c has been used by both file_storage.c and f_mass_storage.c
which had some different requirements in a few places.  To accomodate for
that, storage_common.c provided configuratian macros which were to be
defined (or not) prior to the file #inclusion.  Because now
file_storage.c is no longer with us, we can remove support for those
macros and thus simplify the code slightly.
Signed-off-by: NMichal Nazarewicz <mina86@mina86.com>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

Since g_file_storage has been removed, this commit removes code from
the storage_common.c file which has been used by file_storage.c only
(and not by f_mass_storage.c).
Signed-off-by: NMichal Nazarewicz <mina86@mina86.com>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

The File-backed Storage Gadget (g_file_storage) gadget has been replaced
with Mass Storage Gadget (g_mass_storage) which uses the composite
framework.  This commit removes g_file_storage (and most references to it).
Signed-off-by: NMichal Nazarewicz <mina86@mina86.com>
Acked-by: NAlan Stern <stern@rowland.harvard.edu>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

Checking skb->len against ETH_FRAME_LEN assumes a 1514
ethernet frame size. With an 802.1Q VLAN header, ethernet
frame length can now be 1518. Validate frame length against that.
Signed-off-by: NIan Coolidge <iancoolidge@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Correct spelling typo in debug messages within drivers/usb.
Acked-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: NMasanari Iida <standby24x7@gmail.com>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

The one thing that makes two UDCs+HCDs impossible is the global
the_controller variable. This patch changes this. After device
allocation we allocate the "the_controller" variable and pass it as
platform_data to the UDC and its companion.
We can have now multiple instances dummy hcd and therefore I change the
limit from one to two. I was able to test this with g_ncm adn g_zero:

|# lsusb
|Bus 001 Device 002: ID 0525:a4a0 Netchip Technology, Inc. Linux-USB "Gadget Zero"
|Bus 002 Device 002: ID 0525:a4a1 Netchip Technology, Inc. Linux-USB Ethernet Gadget
|Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
|Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

I was able to start testusb -a and ifconfig usb[01] up with no complains.
Signed-off-by: NSebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

This patch creates & adds multiple instances of the HCD and UDC. We have
a new module option "num" which says how many emulated UDCs + HCDs we
want. The default value is one and currently the maximum is one as well.
This will change soon.
Signed-off-by: NSebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

This patch replaces the single pdev variable by an array. One change:
The device id is no longer -1 (i.e. none) but 0.
This is prepation work for multiple instances of the dummy_hcd + udc
which should help to test gadget framework with multiple UDCs.
Signed-off-by: NSebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

Instead of calling usb_string_id() multiple times I replace it with one
usb_string_ids_tab(). The NULL pointer in struct usb_string with "" and
are not overwritten in fail or unbind case.

The conditional assignment remains because some gadgets recycle the string
ID because the same descriptor (and string ID) is used if we have more
than one config descriptor.
Signed-off-by: NSebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

There is no need for this variable in between.
Acked-by: NJassi Brar <jassisinghbrar@gmail.com>
Signed-off-by: NSebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

This patch removes the shifting and masking of interface and its alt
setting and provides its own variable.

This looks better and is smaller:
 text    data     bss     dec     hex filename
x86-32
 6940     956      56    7952    1f10 gadget/audio.o.old
 6908     956      56    7920    1ef0 gadget/audio.o.new
arm
 7914     956      56    8926    22de gadget/audio.o.old
 7886     956      56    8898    22c2 gadget/audio.o.new
Acked-by: NJassi Brar <jassisinghbrar@gmail.com>
Signed-off-by: NSebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

DMA_ADDR_INVALID is used by the UDC driver and the gadgets should
provide only a buffer address. Everything else should be taken core of
by the UDC and udc-core.
Signed-off-by: NSebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

HS and SS descriptors are staticaly created. They are updated during the
bind process with the endpoint address, string id or interface numbers.

After that, the descriptor chain is linked to struct usb_function which
is used by composite in order to serve the GET_DESCRIPTOR requests,
number of available configs and so on.

There is no need to assign the HS descriptor only if the UDC supports
HS speed because composite won't report those to the host if HS support
has not been reached. The same reasoning is valid for SS.

This patch makes sure each function updates HS/SS descriptors
unconditionally and uses the newly introduced helper function to create a
copy the descriptors for the speed which is supported by the UDC.

While at that, also rename f->descriptors to f->fs_descriptors in order
to make it more explicit what that means.

Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: NSebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

The "video->minor = -1" assigment is done in V4L2 by
video_register_device() so it is removed here.
Now. uvc_function_bind() calls in error case uvc_function_unbind() for
cleanup. The problem is that uvc_function_unbind() frees the uvc struct
and uvc_bind_config() does as well in error case of usb_add_function().
Removing kfree() in usb_add_function() would make the patch smaller but
it would look odd because the new allocated memory is not cleaned up.
However it is not guaranteed that if we call usb_add_function() we also
get to the bind function.
Therefore the patch extracts the conditional cleanup from
uvc_function_unbind() applies to uvc_function_bind().
uvc_function_unbind() now contains only the complete cleanup which is
required once everything has been registrated.

Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: Bhupesh Sharma <bhupesh.sharma@st.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: NSebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

Cc: stable <stable@vger.kernel.org>
Signed-off-by: NSebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

This function works only on FS or HS. If the gadget is HS capable only
HS descriptors are assigned. If we plug it to an 1.1 host it won't work
because we have only 2.0 descriptors. This patch changes the behavior to
provide both sets.
Signed-off-by: NSebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

The HS descriptors are only created if HS is supported by the UDC but we
never free them.

Cc: stable <stable@vger.kernel.org>
Signed-off-by: NSebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

Whether highspeed configuration is valid or not is something that
composite decides and not the gadget. That gadget can only provide the
required descriptors for it.
Signed-off-by: NSebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

I think this is wrong since 72c973dd ("usb: gadget: add
usb_endpoint_descriptor to struct usb_ep"). If we fail to allocate an ep
or bail out early we shouldn't check for the descriptor which is
assigned at ep_enable() time.

Cc: Tatyana Brokhman <tlinder@codeaurora.org>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: NSebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

In case something goes wrong here, don't leak memory / endpoints.
Acked-by: NJassi Brar <jassisinghbrar@gmail.com>
Signed-off-by: NSebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

The 9 for HS means 32ms. Use the macro to make it easier to read.
Signed-off-by: NSebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

The 5+4 magic for HS tries to aim 32ms which is also what is intended
with 1 << 5 for FS. This little macro should make this easier to
understand.
Signed-off-by: NSebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

The descriptor list for FS speed was not NULL terminated. This patch
fixes this.

While here one of the twe two bAlternateSetting assignments for the BOT
interface. Both assign 0, one is enough.

Cc: stable <stable@vger.kernel.org>
Signed-off-by: NSebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

Commit d11519 ("usb: gadget: Add Interface Association Descriptor to
ECM") added the IAD descriptor to FS and HS descriptors. The SS
descriptor has been left out probably because it has been added "just
recently".
Signed-off-by: NSebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

Add the missing unlock on the error handle path in function
net2272_irq().
Signed-off-by: NWei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

The STOTG04 is an replacement for ISP1301.

Most of the registers on STOTG04 are the same as on ISP1301, but the
register ISP1301_I2C_OTG_CONTROL_2 (address 0x10) doesn't exist on the
ST part.

This is a work around for this by using the interrupt source register that
should behave the same on both parts and has the needed information.
Tested-by: NRoland Stigge <stigge@antcom.de>
Signed-off-by: NAlexandre Pereira da Silva <aletes.xgr@gmail.com>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

This message is an debugging message. It's useful for finding protocol
details but it's not necessarily an error.
Acked-by: NRoland Stigge <stigge@antcom.de>
Signed-off-by: NAlexandre Pereira da Silva <aletes.xgr@gmail.com>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

Composite gadget support is now available as a library instead of being
built with each gadget. Composite drivers need to select
USB_LIBCOMPOSITE.
Signed-off-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

We need to take the terminator into consideration here or the last
character gets silently truncated away later.
Signed-off-by: NDan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: NNicholas Bellinger <nab@linux-iscsi.org>

We set bAlternateSetting to zero twice.  I kept the second one
(.bAlternateSetting = USB_G_ALT_INT_BBB) because that's more
descriptive.
Signed-off-by: NDan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: NNicholas Bellinger <nab@linux-iscsi.org>

__user * != * __user
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>

Acked-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: NFelipe Balbi <balbi@ti.com>
Acked-by: NSerge Hallyn <serge.hallyn@canonical.com>
Signed-off-by: NEric W. Biederman <ebiederm@xmission.com>

Acked-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: NFelipe Balbi <balbi@ti.com>
Acked-by: NSerge Hallyn <serge.hallyn@canonical.com>
Signed-off-by: NEric W. Biederman <ebiederm@xmission.com>

Platform data for device drivers should be defined in
include/linux/platform_data/*.h, not in the architecture
and platform specific directories.

This moves such data out of the samsung include directories
Signed-off-by: NArnd Bergmann <arnd@arndb.de>
Acked-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: NNicolas Pitre <nico@linaro.org>
Acked-by: NMauro Carvalho Chehab <mchehab@redhat.com>
Cc: Kukjin Kim <kgene.kim@samsung.com>
Cc: Kyungmin Park <kyungmin.park@samsung.com>
Cc: Ben Dooks <ben-linux@fluff.org>
Cc: Jeff Garzik <jgarzik@pobox.com>
Cc: Guenter Roeck <linux@roeck-us.net>
Cc: "Wolfram Sang (embedded platforms)" <w.sang@pengutronix.de>
Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Cc: Bryan Wu <bryan.wu@canonical.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: Sylwester Nawrocki <s.nawrocki@samsung.com>
Cc: Chris Ball <cjb@laptop.org>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Grant Likely <grant.likely@secretlab.ca>
Cc: Felipe Balbi <balbi@ti.com>
Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: Sangbeom Kim <sbkim73@samsung.com>
Cc: Liam Girdwood <lrg@ti.com>
Cc: linux-samsung-soc@vger.kernel.org

As discussed at the kernel summit this year, CONFIG_EXPERIMENTAL means
nothing, so let's get rid of it.
Acked-by: NFelipe Balbi <balbi@ti.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: David Herrmann <dh.herrmann@googlemail.com>
Cc: Hauke Mehrtens <hauke@hauke-m.de>
Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: Neil Zhang <zhangwm@marvell.com>
Cc: Randy Dunlap <rdunlap@xenotime.net>
Cc: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Every fabric driver has to supply a se_tfo->set_fabric_sense_len()
method, just so iSCSI can return an offset of 2.  However, every fabric
driver is already allocating a sense buffer and passing it into the
target core, either via transport_init_se_cmd() or target_submit_cmd().

So instead of having iSCSI pass the start of its sense buffer into the
core and then later tell the core to skip the first 2 bytes, it seems
easier for iSCSI just to do the offset of 2 when it passes the sense
buffer into the core.  Then we can drop the se_tfo->set_fabric_sense_len()
everywhere, and just add a couple of lines of code to iSCSI to set the
sense data length to the beginning of the buffer right before it sends
it over the network.

(nab: Remove .set_fabric_sense_len usage from tcm_qla2xxx_npiv_ops +
      change transport_get_sense_buffer to follow v3.6-rc6 code w/o
      ->set_fabric_sense_len usage)
Signed-off-by: NRoland Dreier <roland@purestorage.com>
Signed-off-by: NNicholas Bellinger <nab@linux-iscsi.org>