This driver is being rewritten, but let's silence a pointer-to-int-cast
compiler warning meanwhile.
Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>

There is no interrupt channel as such and so no need to support
->output_report().
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>

To follow coding guidelines a bit :)
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>

Also bring * closer to gb_interface_get_drvdata :)
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>

Add gb_debugfs_get method to access to gb_debug_root dentry,
in order to use it from other greybus modules.
Signed-off-by: Alexandre Bailon <abailon@baylibre.com>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>

Remove packed-attribute from line-coding struct, whose members are all
naturally aligned.
Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>

Fix alignment of the duty and period-fields in the config request,
which should follow the which-field without any inserted padding.
Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>

Fix alignment of the usec-field in the set-debounce request, which
should follow the which-field without any inserted padding.
Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>

Make sure not to call connection_exit for connections that have never
been initialised (e.g. due to failure to init).

This fixes oopses due to null-dereferences and use-after-free in
connection_exit callbacks (e.g. trying to remove a gpio-chip that has
never been added) when the bundle and interface are ultimately
destroyed.
Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>

Fix memory leak in connection_init error path.
Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>

Fix memory leak in connection_init error path.
Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>

This adds HID transport layer driver for Greybus. Most of the stuff is
implemented, but is untested.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Alex Elder <elder@linaro.org>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>

Fix unconditional re-enabling of interrupts in gb_hd_connection_find,
which can be called with local interrupts disabled from the USB
completion handler.
Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Reviewed-by: Alex Elder <elder@linaro.org>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>

When it receive an interrupt, the function gb_gpio_request_recv doesn't
use the good gpio number to get the irq number. Then, the expected irq is never fired.
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>

Fix unconditional re-enabling of interrupts in various operation
functions that can all be called with local interrupts disabled from USB
completion handlers.
Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>

We don't want to bind to the ES1 device, that would be bad.
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>

Fix three related memory leaks in the init an exit callbacks, where the
gpio-lines array was never freed at all and the controller data wasn't
freed in the init error path.
Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>

Adds gpio interrupt handling support using an irqchip/irqdomain
instantiation inside the GB GPIO driver. This implementation works
on older kernels such as 3.10 that do not have the gpiolib irqchip
helpers. Any line on a Greybus gpiochip may be configured as an
interrupt. Once configured, IRQ event messages received from a
module fire off the registered interrupt handler.
Signed-off-by: Matt Porter <mporter@linaro.org>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>

Make sure to release the spin lock protecting the interface bundle lists
before tearing down the connections and removing the bundle device,
which are operations that may sleep.
Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Reviewed-by: Alex Elder <elder@linaro.org>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>

Use GFP_ATOMIC for IDA memory allocations under spin lock, which must
not sleep.
Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Reviewed-by: Alex Elder <elder@linaro.org>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>

Export gb_operation_response_send() for other modules
Signed-off-by: Matt Porter <mporter@linaro.org>
Reviewed-by: Alex Elder <elder@linaro.org>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>

- Fixed incorrect use of $$GREYBUS_SRC_PATH variable
- Added quotes around find pattern to stop shell expansion of "*"
Signed-off-by: Michael Scott <michael.scott@linaro.org>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>

When initializing the USB device, we were starting up the svc message
queue before the cport urbs were allocated.  This might not be an issue
for "slower" machines, but not having any allocated urbs for a cport
might be an issue if we were to handle svc messages.

So wait until everything is properly initialized and allocated before
starting the svc urb.
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>

SVC messages come in in an "order", so don't mess them up by processing
them out of order.  Fix this by making our work queue ordered, which
should keep everything in line.
Reported-by: Perry Hung <perry@leaflabs.com>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>

We now have several modules generated by the greybus build.
Let's add any *.ko files we find to the buid.
Signed-off-by: Michael Scott <michael.scott@linaro.org>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>

Make sure destination for greybus modules is consistent and easier to maintain
Signed-off-by: Michael Scott <michael.scott@linaro.org>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>

This reverts commit 241b5fefc54eae95239b0f7dc4e2b0db49457729 as it's
wrong, we want to insert into the correct place in the list.
Reported-by: Alex Elder <elder@linaro.org>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>

This reverts commit 57131bf309d34568dd3b8f8e9da7a7ba25e9495e, it isn't
going to be needed as the patch this fixes will be reverted.
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>

'gb_i2c_transfer_request' is the name given to a function and a struct. Though
we don't get any compilation errors/warnings about it, but the names should be
unique.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>

'gb_i2c_transfer_response' is the name given to a function and a struct. Though
we don't get any compilation errors/warnings about it, but the names should be
unique.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>

__gb_protocol_register check if the protocol is not already registred,
and then register it. It register in existing->lists but at this point,
existing is always NULL (we exist just before if not).
Use gb_protocols instead.
Signed-off-by: Alexandre Bailon <abailon@baylibre.com>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>

These aren't used anymore and so can be removed.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Alex Elder <elder@linaro.org>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>

This gets rid of lots of duplication of code.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Alex Elder <elder@linaro.org>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>

Request type for all other protocols is defined like: GB_<protocol>_TYPE_<operation>,
but for UART is like: GB_<protocol>_REQ_<operation>.

Replace REQ with TYPE to make it consistent. It will also be useful in a later
patch that creates get_version() routines with the help of a macro.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Alex Elder <elder@linaro.org>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>

Some files are still prefixed with "gb-" with the reasoning that the modules
would be named so, i.e.  gb-*.ko. But this can be done by playing a bit in
Makefile instead and keep uniform naming of .c files.

Lets try it.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Alex Elder <elder@linaro.org>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>