No functional changes, just fixing one easy
to spot sparse error.
Signed-off-by: NFelipe Balbi <balbi@ti.com>

The drivers/usb/gadget directory contains many files.
Files which are related can be distributed into separate directories.
This patch moves the UDC drivers into a separate directory.
Signed-off-by: NAndrzej Pietrasiewicz <andrzej.p@samsung.com>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

Commit e56e69cc ("usb: gadget: net2280: Use pr_* function")
includes a editing mistake on one of the #ifdef.

This patch fixes it.
Reported-by: NPaul Bolle <pebolle@tiscali.nl>
Signed-off-by: NRicardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

Use of quirks improve readability and will be easier to add new devices
to this driver.
Suggested-by: NAlan Stern <stern@rowland.harvard.edu>
Signed-off-by: NRicardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

Driver was using custom functions WARNING, ERROR, DEBUG, instead of
 pr_err, pr_dgb...

New ep_* macros have been created that use standard pr_* functions.
Signed-off-by: NRicardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

- Move logical continuations to end of line
- Improve spacing
Signed-off-by: NRicardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

Fix Code Style using checkpatch.pl criteria
Signed-off-by: NRicardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

Replace a long and ugly expresion with an already available function.
Signed-off-by: NRicardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

Signed-off-by: NRicardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

For bool variables
Signed-off-by: NRicardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

Improves readability of the code
Signed-off-by: NRicardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

Instead of using magic numbers use #defines
Signed-off-by: NRicardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

This patch adds support for the PLX USB3380 and USB3382.

This driver is based on the driver from the manufacturer.

Since USB338X is register compatible with NET2280, I thought that it
would be better to include this hardware into net2280 driver.

Manufacturer's driver only supported the USB33X, did not follow the
Kernel Style and contain some trivial errors. This patch has tried to
address this issues.

This patch has only been tested on USB338x hardware, but the merge has
been done trying to not affect the behaviour of NET2280.
Tested-by: NAlan Stern <stern@rowland.harvard.edu>
Signed-off-by: NRicardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

This reverts commit c4128cac.

This should come through Felipe's tree first, and there was a bunch of
other patches that are needed after this one as well that I didn't have.

Cc: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Cc: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

This patch adds support for the PLX USB3380 and USB3382.

This driver is based on the driver from the manufacturer.

Since USB338X is register compatible with NET2280, I thought that it
would be better to include this hardware into net2280 driver.

Manufacturer's driver only supported the USB33X, did not follow the
Kernel Style and contain some trivial errors. This patch has tried to
address this issues.

This patch has only been tested on USB338x hardware, but the merge has
been done trying to not affect the behaviour of NET2280.
Signed-off-by: NRicardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Tested-by: NAlan Stern <stern@rowland.harvard.edu>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

When DEBUG is enabled driver->driver.name is accessed, but driver
can be NULL

[  174.411689] BUG: unable to handle kernel NULL pointer dereference at 0000000000000040
[  174.429043] RIP: 0010:[<ffffffffa0131ca3>]  [<ffffffffa0131ca3>] net2280_stop+0xa3/0x100 [net2280]
[  174.457910] Call Trace:
[  174.459503]  [<ffffffffa00dd92a>] usb_gadget_remove_driver+0x5a/0xb0 [udc_core]
[  174.462693]  [<ffffffffa00ddd84>] usb_del_gadget_udc+0xb4/0x110 [udc_core]
[  174.464316]  [<ffffffffa012e2bf>] net2280_remove+0x2f/0x1c0 [net2280]
Signed-off-by: NRicardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

This patch adds "maxpacket_limit" to struct usb_ep. This field contains
maximum value of maxpacket supported by driver, and is set in driver probe.
This value should be used by autoconfig() function, because value of field
"maxpacket" is set to value from endpoint descriptor when endpoint becomes
enabled. So when autoconfig() function will be called again for this endpoint,
"maxpacket" value will contain wMaxPacketSize from descriptior instead of
maximum packet size for this endpoint.

For this reason this patch adds new field "maxpacket_limit" which contains
value of maximum packet size (which defines maximum endpoint capabilities).
This value is used in ep_matches() function used by autoconfig().

Value of "maxpacket_limit" should be set in UDC driver probe function, using
usb_ep_set_maxpacket_limit() function, defined in gadget.h. This function
set choosen value to both "maxpacket_limit" and "maxpacket" fields.

This patch modifies UDC drivers by adding support for maxpacket_limit.
Signed-off-by: NRobert Baldyga <r.baldyga@samsung.com>
Signed-off-by: NKyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

These aren't necessary after switch and if blocks.
Signed-off-by: NJoe Perches <joe@perches.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

The driver core clears the driver data to NULL after device_release
or on probe failure. Thus, it is not needed to manually clear the
device driver data to NULL.
Signed-off-by: NJingoo Han <jg1.han@samsung.com>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

Driver core sets driver data to NULL upon failure or remove.
Signed-off-by: NSachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Convert all USB gadget sysfs attributes to use the _RO or _RW variants,
to make them easier to audit and ensure that the permissions are
correct.

Note, two are left using the DEVICE_ATTR() macro, as there is no
DEVICE_ATTR_WO() in Linus's tree, that will happen after 3.12-rc1 is
out, a follow-on patch will be sent then.
Reviewed-by: NFelipe Balbi <balbi@ti.com>
Acked-by: NFelipe Balbi <balbi@ti.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

--
 drivers/usb/gadget/composite.c      |    8 +++-----
 drivers/usb/gadget/dummy_hcd.c      |    8 ++++----
 drivers/usb/gadget/f_mass_storage.c |   14 ++++++--------
 drivers/usb/gadget/net2272.c        |    4 ++--
 drivers/usb/gadget/net2280.c        |   18 +++++++++---------
 drivers/usb/gadget/storage_common.c |   25 ++++++++++++-------------
 drivers/usb/gadget/udc-core.c       |   14 +++++++-------
 7 files changed, 43 insertions(+), 48 deletions(-)

fix the following sparse warnings:

drivers/usb/gadget/net2280.c:2063:13: warning: Using plain integer as NULL pointer
drivers/usb/gadget/net2280.c:2321:68: warning: Using plain integer as NULL pointer
drivers/usb/gadget/net2280.c:2349:68: warning: Using plain integer as NULL pointer
drivers/usb/gadget/net2280.c:2371:68: warning: Using plain integer as NULL pointer
Acked-by: NMichal Nazarewicz <mina86@mina86.com>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

This patch (as1667) removes an incorrect driver->unbind() call from
the net2280 driver.  If startup fails, the UDC core takes care of
unbinding the gadget driver automatically; the controller driver
shouldn't do it too.
Signed-off-by: NAlan Stern <stern@rowland.harvard.edu>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

with the latest udc_start/udc_stop conversion,
too much code was deleted which ended up creating
a regression in net2272 and net2280 drivers.

To fix the regression we revert one hunk of the
original commits.
Signed-off-by: NFelipe Balbi <balbi@ti.com>

DMA_ADDR_INVALID isn't used anymore, it's safe
to remove it.
Signed-off-by: NFelipe Balbi <balbi@ti.com>

udc-core provides a better way to handle release
methods, let's use it.
Signed-off-by: NFelipe Balbi <balbi@ti.com>

udc-core now handles that for us, which means
we can remove it from our driver.
Signed-off-by: NFelipe Balbi <balbi@ti.com>

udc-core now sets dma-related and parent fields
for us, we don't need to do it ourselves.
Signed-off-by: NFelipe Balbi <balbi@ti.com>

We don't need the ->register_my_device flag
anymore because all UDC drivers have been
properly converted.

Let's remove every history of it.
Signed-off-by: NFelipe Balbi <balbi@ti.com>

By simply setting a flag, we can drop some
boilerplate code.
Signed-off-by: NFelipe Balbi <balbi@ti.com>

This patch (as1656) adds a module parameter to the net2280 UDC driver
to force full-speed operation.  It is intended for testing purposes,
where one wants to check how well a full-speed device performs when
attached to a high-speed bus.  Without this parameter it would be
necessary to interpose a full-speed hub; otherwise the net2280 would
connect at high speed.
Signed-off-by: NAlan Stern <stern@rowland.harvard.edu>
Acked-by: NFelipe Balbi <balbi@ti.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

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>

Remove all #inclusions of asm/system.h preparatory to splitting and killing
it.  Performed with the following command:

perl -p -i -e 's!^#\s*include\s*<asm/system[.]h>.*\n!!' `grep -Irl '^#\s*include\s*<asm/system[.]h>' *`
Signed-off-by: NDavid Howells <dhowells@redhat.com>

those routines have everything we need to map/unmap
USB requests and it's better to use them.
Signed-off-by: NFelipe Balbi <balbi@ti.com>

module_param(bool) used to counter-intuitively take an int.  In
fddd5201 (mid-2009) we allowed bool or int/unsigned int using a messy
trick.

It's time to remove the int/unsigned int option.  For this version
it'll simply give a warning, but it'll break next kernel version.
Acked-by: NMauro Carvalho Chehab <mchehab@redhat.com>
Signed-off-by: NRusty Russell <rusty@rustcorp.com.au>

This commit renames the “speed” field of the usb_gadget_driver
structure to “max_speed”.  This is so that to make it more
apparent that the field represents the maximum speed gadget
driver can support.

This also make the field look more like fields with the same
name in usb_gadget and usb_composite_driver structures.  All
of those represent the *maximal* speed given entity supports.

After this commit, there are the following fields in various
structures:
* usb_gadget::speed - the current connection speed,
* usb_gadget::max_speed - maximal speed UDC supports,
* usb_gadget_driver::max_speed - maximal speed gadget driver
  supports, and
* usb_composite_driver::max_speed - maximal speed composite
  gadget supports.
Signed-off-by: NMichal Nazarewicz <mina86@mina86.com>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

This commit replaces usb_gadget's is_dualspeed field with
a max_speed field.

[ balbi@ti.com : Fixed DWC3 driver ]
Signed-off-by: NMichal Nazarewicz <mina86@mina86.com>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

Several UDC drivers had a gadget driver's speed sanity check of the
form of:

	driver->speed != USB_SPEED_HIGH

or:

	driver->speed != USB_SPEED_HIGH && driver->speed != USB_SPEED_FULL

As more and more gadget drivers support USB SuperSpeed, driver->speed
may be set to USB_SPEED_SUPER and UDC driver should handle such gadget
correctly.  The above checks however fail to recognise USB_SPEED_SUPER
as a valid speed.

This commit changes the two checks to:

	driver->speed < USB_SPEED_HIGH

or:

	driver->speed < USB_SPEED_FULL

respectively.
Signed-off-by: NMichal Nazarewicz <mina86@mina86.com>
Reported-by: NAlan Stern <stern@rowland.harvard.edu>
Tested-by: NHeiko Stuebner <heiko@sntech.de>
Signed-off-by: NFelipe Balbi <balbi@ti.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

with this patch we can finally remove the global
"the_controller" pointer.
Signed-off-by: NFelipe Balbi <balbi@ti.com>

In a few places in the kernel, the code prints
a human-readable USB device speed (eg. "high speed").
This involves a switch statement sometimes wrapped
around in ({ ... }) block leading to code repetition.

To mitigate this issue, this commit introduces
usb_speed_string() function, which returns
a human-readable name of provided speed.

It also changes a few places switch was used to use
this new function.  This changes a bit the way the
speed is printed in few instances at the same time
standardising it.
Signed-off-by: NMichal Nazarewicz <mina86@mina86.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>