we don't need to enable IRQs until we have
a gadget driver loaded and ready to work,
so let's delay IRQ enable to ->udc_start()
and IRQ disable to ->udc_stop().

While at that, also move the related use of
request_irq() and free_irq().
Tested-by: Vivek Gautam <gautam.vivek@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

Make the call to dwc3_event_buffers_setup()
and dwc3_event_buffers_cleanup() explicit,
so it's easier to implement PM.
Tested-by: Vivek Gautam <gautam.vivek@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

we have generic implementations for a reason,
let's use them
Signed-off-by: Felipe Balbi <balbi@ti.com>

we have generic implementations for a reason,
let's use them
Signed-off-by: Felipe Balbi <balbi@ti.com>

we have generic implementations for a reason,
let's use them
Signed-off-by: Felipe Balbi <balbi@ti.com>

we have generic implementations for a reason,
let's use them
Signed-off-by: Felipe Balbi <balbi@ti.com>

we have generic implementations for a reason,
let's use them.
Signed-off-by: Felipe Balbi <balbi@ti.com>

that member isn't used anywhere in the driver
and be removed with no mercy.
Signed-off-by: Felipe Balbi <balbi@ti.com>

we have generic implementations for a reason,
let's use them.
Signed-off-by: Felipe 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: Felipe Balbi <balbi@ti.com>

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

By simply setting a flag, we can drop some
boilerplate code.
Acked-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Felipe Balbi <balbi@ti.com>

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

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

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

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

By simply setting a flag, we can drop some
boilerplate code.
Reviewed-by: Tomasz Figa <tomasz.figa@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

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

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

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

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

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

Fix the following compile warning:

mv_u3d_core.c:1766:12: warning: 'mv_u3d_remove' \
	defined but not used [-Wunused-function]
Signed-off-by: Felipe Balbi <balbi@ti.com>

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

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

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

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

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

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

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

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

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

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

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

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

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

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

By simply setting a flag, we can delete a little
boilerplate code.
Signed-off-by: Felipe Balbi <balbi@ti.com>

We don't need to register that device ourselves
if we simply set gadget->register_my_device.
Signed-off-by: Felipe Balbi <balbi@ti.com>

Currently all UDC drivers are calling
device_register() before calling
usb_add_gadget_udc(). In order to avoid
code duplication, we can allow udc-core.c
register that device.

However that would become a really large patch,
so to cope with the meanwhile and allow us
to write bite-sized patches, we're adding
a flag which will be set by UDC driver once
it removes the code for registering the
gadget device.

Once all are converted, the new flag will
be removed.
Reviewed-by: Tomasz Figa <tomasz.figa@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>