We don't need dwc3_trace() unless we're building a
kernel with CONFIG_FTRACE. This patch reduces
dwc3.ko text size a bit while also removing overhead
of dwc3_trace() calls.

   text    data     bss     dec     hex filename
  50796     581       0   51377    c8b1 drivers/usb/dwc3/dwc3.o
  43961     581       0   44542    adfe drivers/usb/dwc3/dwc3.o.patched
Signed-off-by: NFelipe Balbi <felipe.balbi@linux.intel.com>

We can offset the latency of a full Start Transfer
command - where we _must_ poll for its completion -
to usb_ep_enable() time. This means that once
requests start showing up from the gadget driver, we
can rely on No Response Update Transfer command -
where we don't need to poll for completion.

This patch, starts implementing this method for Bulk
endpoints, even though, technically, we could extend
it to all other endpoints in future commits.
Signed-off-by: NFelipe Balbi <felipe.balbi@linux.intel.com>

In case of periodic transfers, let's pretty print
the size field as a multiplier followed by length,
such as :

	3x 1024

instead of:

	33555456
Signed-off-by: NFelipe Balbi <felipe.balbi@linux.intel.com>

Now that usb_endpoint_maxp() only returns the lowest
11 bits from wMaxPacketSize, we can remove the &
operation from this driver.
Signed-off-by: NFelipe Balbi <felipe.balbi@linux.intel.com>

Now that usb_endpoint_maxp() only returns the lowest
11 bits from wMaxPacketSize, we can remove the &
operation from this driver.

Cc: Li Yang <leoli@freescale.com>
Cc: <linuxppc-dev@lists.ozlabs.org>
Signed-off-by: NFelipe Balbi <felipe.balbi@linux.intel.com>

Now that usb_endpoint_maxp() only returns the lowest
11 bits from wMaxPacketSize, we can remove the &
operation from this driver.

Cc: Valentina Manea <valentina.manea.m@gmail.com>
Cc: Shuah Khan <shuah@kernel.org>
Cc: <linux-usb@vger.kernel.org>
Signed-off-by: NFelipe Balbi <felipe.balbi@linux.intel.com>

Now that usb_endpoint_maxp() only returns the lowest
11 bits from wMaxPacketSize, we can remove the &
operation from this driver.
Signed-off-by: NFelipe Balbi <felipe.balbi@linux.intel.com>

Now that usb_endpoint_maxp() only returns the lowest
11 bits from wMaxPacketSize, we can remove the &
operation from this driver.
Signed-off-by: NFelipe Balbi <felipe.balbi@linux.intel.com>

Now that usb_endpoint_maxp() only returns the lowest
11 bits from wMaxPacketSize, we can remove the &
operation from this driver.
Signed-off-by: NFelipe Balbi <felipe.balbi@linux.intel.com>

Now that usb_endpoint_maxp() only returns the lowest
11 bits from wMaxPacketSize, we can remove the &
operation from this driver.
Signed-off-by: NFelipe Balbi <felipe.balbi@linux.intel.com>

Now that usb_endpoint_maxp() only returns the lowest
11 bits from wMaxPacketSize, we can remove the &
operation from this driver.

Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: <linux-usb@vger.kernel.org>
Signed-off-by: NFelipe Balbi <felipe.balbi@linux.intel.com>

Now that usb_endpoint_maxp() only returns the lowest
11 bits from wMaxPacketSize, we can remove the &
operation from this driver.

Cc: Ashwini Pahuja <ashwini.linux@gmail.com>
Cc: <linux-usb@vger.kernel.org>
Signed-off-by: NFelipe Balbi <felipe.balbi@linux.intel.com>

Now that usb_endpoint_maxp() only returns the lowest
11 bits from wMaxPacketSize, we can remove the &
operation from this driver.
Acked-by: NNicolas Ferre <nicolas.ferre@atmel.com>
Cc: <linux-usb@vger.kernel.org>
Signed-off-by: NFelipe Balbi <felipe.balbi@linux.intel.com>

Now that usb_endpoint_maxp() only returns the lowest
11 bits from wMaxPacketSize, we can remove the &
operation from this driver.
Signed-off-by: NFelipe Balbi <felipe.balbi@linux.intel.com>

Now that usb_endpoint_maxp() only returns the lowest
11 bits from wMaxPacketSize, we can remove this macro
from the driver.

Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: <linux-usb@vger.kernel.org>
Signed-off-by: NFelipe Balbi <felipe.balbi@linux.intel.com>

Now that usb_endpoint_maxp() only returns the lowest
11 bits from wMaxPacketSize, we can remove the &
operation from this driver.

Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: NFelipe Balbi <felipe.balbi@linux.intel.com>

Now that usb_endpoint_maxp() only returns the lowest
11 bits from wMaxPacketSize, we can remove the &
operation from this driver.

Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: <linux-usb@vger.kernel.org>
Acked-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: NFelipe Balbi <felipe.balbi@linux.intel.com>

Now that usb_endpoint_maxp() only returns the lowest
11 bits from wMaxPacketSize, we can remove the &
operation from this driver.

Cc: Peter Chen <Peter.Chen@nxp.com>
Cc: <linux-usb@vger.kernel.org>
Signed-off-by: NFelipe Balbi <felipe.balbi@linux.intel.com>

Now that usb_endpoint_maxp() only returns the lowest
11 bits from wMaxPacketSize, we can remove the &
operation from this driver.

Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: Mauro Carvalho Chehab <mchehab@kernel.org>
Cc: <linux-media@vger.kernel.org>
Acked-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: NFelipe Balbi <felipe.balbi@linux.intel.com>

usb_endpoint_maxp() is now returning maxpacket
correctly - iow only bits 10:0. We can finaly remove
XHCI's private GET_MAX_PACKET macro.
Signed-off-by: NFelipe Balbi <felipe.balbi@linux.intel.com>

Now that we have a helper to gather periodic
endpoints' multiplier bits from wMaxPacketSize and
every driver is using it, we can safely make sure
that usb_endpoint_maxp() returns only bits 10:0 of
wMaxPacketSize which is where the actual packet size
lies.
Signed-off-by: NFelipe Balbi <felipe.balbi@linux.intel.com>

We have introduced a helper to calculate multiplier
value from wMaxPacketSize. Start using it.

Cc: Bin Liu <b-liu@ti.com>
Signed-off-by: NFelipe Balbi <felipe.balbi@linux.intel.com>

We have introduced a helper to calculate multiplier
value from wMaxPacketSize. Start using it.
Signed-off-by: NFelipe Balbi <felipe.balbi@linux.intel.com>

We have introduced a helper to calculate multiplier
value from wMaxPacketSize. Start using it.

Cc: Mathias Nyman <mathias.nyman@intel.com>
Cc: <linux-usb@vger.kernel.org>
Signed-off-by: NFelipe Balbi <felipe.balbi@linux.intel.com>

We have introduced a helper to calculate multiplier
value from wMaxPacketSize. Start using it.

Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: <linux-usb@vger.kernel.org>
Signed-off-by: NFelipe Balbi <felipe.balbi@linux.intel.com>

We have introduced a helper to calculate multiplier
value from wMaxPacketSize. Start using it.
Signed-off-by: NFelipe Balbi <felipe.balbi@linux.intel.com>

We have introduced a helper to calculate multiplier
value from wMaxPacketSize. Start using it.
Signed-off-by: NFelipe Balbi <felipe.balbi@linux.intel.com>

We have introduced a helper to calculate multiplier
value from wMaxPacketSize. Start using it.
Signed-off-by: NFelipe Balbi <felipe.balbi@linux.intel.com>

We have introduced a helper to calculate multiplier
value from wMaxPacketSize. Start using it.

Cc: Li Yang <leoli@freescale.com>
Cc: <linuxppc-dev@lists.ozlabs.org>
Signed-off-by: NFelipe Balbi <felipe.balbi@linux.intel.com>

We have introduced a helper to calculate multiplier
value from wMaxPacketSize. Start using it.

Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: <linux-usb@vger.kernel.org>
Signed-off-by: NFelipe Balbi <felipe.balbi@linux.intel.com>

We have introduced a helper to calculate multiplier
value from wMaxPacketSize. Start using it.

Cc: Ashwini Pahuja <ashwini.linux@gmail.com>
Cc: <linux-usb@vger.kernel.org>
Signed-off-by: NFelipe Balbi <felipe.balbi@linux.intel.com>

We have introduced a helper to calculate multiplier
value from wMaxPacketSize. Start using it.
Acked-by: NNicolas Ferre <nicolas.ferre@atmel.com>
Cc: <linux-usb@vger.kernel.org>
Signed-off-by: NFelipe Balbi <felipe.balbi@linux.intel.com>

We have introduced a helper to calculate multiplier
value from wMaxPacketSize. Start using it.

Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: <linux-usb@vger.kernel.org>
Acked-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: NFelipe Balbi <felipe.balbi@linux.intel.com>

We have introduced a helper to calculate multiplier
value from wMaxPacketSize. Start using it.
Acked-by: NPeter Chen <Peter.Chen@nxp.com>
Cc: <linux-usb@vger.kernel.org>
Signed-off-by: NFelipe Balbi <felipe.balbi@linux.intel.com>

We have introduced a helper to calculate multiplier
value from wMaxPacketSize. Start using it.
Acked-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: Mauro Carvalho Chehab <mchehab@kernel.org>
Cc: <linux-media@vger.kernel.org>
Signed-off-by: NFelipe Balbi <felipe.balbi@linux.intel.com>

We have introduced a helper to calculate multiplier
value from wMaxPacketSize. Start using it.

Cc: Mauro Carvalho Chehab <mchehab@kernel.org>
Cc: <linux-media@vger.kernel.org>
Signed-off-by: NFelipe Balbi <felipe.balbi@linux.intel.com>

With this extra piece of information, it will be
easier to find mismatches between driver and HW.
Signed-off-by: NFelipe Balbi <felipe.balbi@linux.intel.com>

We will be using dwc3_ep0_state_string() from within
our tracepoints, so we need to move that helper to
debug.h in order for it to be accessible.
Signed-off-by: NFelipe Balbi <felipe.balbi@linux.intel.com>

Removing some trace prints which were made redundant
when we started decoding events and TRBs completely
within their respective trace points.
Signed-off-by: NFelipe Balbi <felipe.balbi@linux.intel.com>

DWC3 can tell us which phase of a setup transfer
we're getting into. Let's decode it from the event
to make it easier to debug.
Signed-off-by: NFelipe Balbi <felipe.balbi@linux.intel.com>