version.h header inclusion is not necessary as detected by
versioncheck.
Signed-off-by: NSachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

version.h header inclusion is not necessary as detected by
versioncheck.
Signed-off-by: NSachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

version.h header inclusion is not necessary as detected by
versioncheck.
Signed-off-by: NSachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

version.h header inclusion is not necessary as detected by
versioncheck.
Signed-off-by: NSachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

version.h header inclusion is not necessary as detected by
versioncheck.
Signed-off-by: NSachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

version.h header inclusion is not necessary as detected by
versioncheck.
Signed-off-by: NSachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

version.h header inclusion is not necessary as detected by
versioncheck.
Signed-off-by: NSachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

version.h header inclusion is not necessary as detected by
versioncheck.
Signed-off-by: NSachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

version.h header inclusion is not necessary as detected by
versioncheck.
Signed-off-by: NSachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

version.h header inclusion is not necessary as detected by
versioncheck.
Signed-off-by: NSachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

version.h header inclusion is not necessary as detected by
versioncheck.
Signed-off-by: NSachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

version.h header inclusion is not necessary as detected by
versioncheck.
Signed-off-by: NSachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

version.h header inclusion is not necessary as detected by
versioncheck.
Signed-off-by: NSachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

version.h header inclusion is not necessary as detected by
versioncheck.
Signed-off-by: NSachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

version.h header inclusion is not necessary as detected by
versioncheck.
Signed-off-by: NSachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

version.h header inclusion is not necessary as detected by
versioncheck.
Signed-off-by: NSachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

version.h header inclusion is not necessary as detected by
versioncheck.
Signed-off-by: NSachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

version.h header inclusion is not necessary as detected by
versioncheck.
Signed-off-by: NSachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

version.h header inclusion is not necessary as detected by
versioncheck.
Signed-off-by: NSachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

version.h header inclusion is not necessary as detected by
versioncheck.
Signed-off-by: NSachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

version.h header inclusion is not necessary as detected by
versioncheck.
Signed-off-by: NSachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Give useful error messages when we can't create server sockets.
Signed-Off-By: NAnthony Foiani <anthony.foiani@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Using a simple integer makes the code easier to read and removes the
need to blank out array elements in case of errors.
Signed-Off-By: NAnthony Foiani <anthony.foiani@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

A few whitespace changes allows the file to pass checkpatch --strict
(other than ignoring the CamelCase derived from the USB standard.)
Signed-Off-By: NAnthony Foiani <anthony.foiani@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Delete unused "pVBInfo" parameters from internal functions.
Signed-off-by: NAaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Delete unused "RefreshRateTableIndex" parameters from internal functions.
Signed-off-by: NAaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Delete unused "HwDeviceExtension" parameters from internal functions.
Signed-off-by: NAaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Delete unused "ModeIdIndex" parameters from internal functions.
Signed-off-by: NAaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Delete unused "ModeNo" parameters from internal functions.
Signed-off-by: NAaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Delete unused "rateindex" parameters from internal functions.
Signed-off-by: NAaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

When dma is disabled inside dwc2 (because the hardware does not support
it, or the code was changed to disable it for testing), let the usb core
know about this by clearing hcd->self.uses_dma.

By default, the usb core assumes that dma is used when a dma_mask is
set, but this might not always match the dma_enable value in dwc2. To
prevent problems resulting from a mismatch, better to explicitely
disable dma in this case (though everything seemed to work with the
wrong value of uses_dma as well, probably only resulted in some unneeded
work).
Signed-off-by: NMatthijs Kooijman <matthijs@stdin.nl>
Acked-by: NPaul Zimmerman <Paul.Zimmerman@synopsys.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

If the platform or bus driver failed to setup a dma_mask, but the
hardware advertises support for DMA, before DMA would be enabled in
dwc2, but disabled in the usb core, making all connectivity break.

With this commit, the dwc2 driver will emit a warning and fall back to
slave mode in this case.

Note that since commit 642f2ecc (staging: dwc2: Fix dma-enabled platform
devices using a default dma_mask) the platform bindings make sure a DMA
mask is always present, but having this check here anyway is probably a
good from a defensive programming standpoint (in case of changes to
platform.c or addition of new glue layers).
Signed-off-by: NMatthijs Kooijman <matthijs@stdin.nl>
Acked-by: NPaul Zimmerman <Paul.Zimmerman@synopsys.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

The dwc2 driver sets the value of the DWC2 GAHBCFG register to 0x6,
which is GAHBCFG_HBSTLEN_INCR4. But different platforms may require
different values. In particular, the Broadcom 2835 SOC used in the
Raspberry Pi needs a value of 0x10, otherwise the DWC2 controller
stops working after a short period of heavy USB traffic.

So this patch adds another driver parameter named 'ahbcfg'. The
default value is 0x6. Any platform needing a different value should
add a DT attribute to set it.

This patch also removes the 'ahb_single' driver parameter, since
that bit can now be set using 'ahbcfg'.

This patch does not add DT support to platform.c, I will leave that
to whoever owns the first platform that needs a non-default value.
(Stephen?)
Signed-off-by: NPaul Zimmerman <paulz@synopsys.com>
Tested-by: NStephen Warren <swarren@wwwdotorg.org>
Reviewed-by: NMatthijs Kooijman <matthijs@stdin.nl>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

This fix uses 'value' parameter as it should be instead
of hardcoded -1.
Signed-off-by: NJulien Delacou <julien.delacou@stericsson.com>
Acked-by: NPaul Zimmerman <paulz@synopys.com>
Reviewed-by: NMatthijs Kooijman <matthijs@stdin.nl>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Remove the use of bus_to_virt() and just fail the transfer if an
unaligned buffer with no virtual address is found. AFAIK that
can't happen anyway.

Also change setting of coherent DMA mask to the normal 32 bits.
31 bits was only needed when calling bus_to_virt() AFAICR.
Signed-off-by: NPaul Zimmerman <paulz@synopsys.com>
Tested-by: NStephen Warren <swarren@wwwdotorg.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Change the non-aligned buffer debug messages to dev_vdbg(). Also
remove some duplicated debug output when the driver is loaded.
Signed-off-by: NPaul Zimmerman <paulz@synopsys.com>
Tested-by: NStephen Warren <swarren@wwwdotorg.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

The logic in dwc2_hcd_qtd_add() was a bit messy, and one of the
error exit paths was broken. Fix it up.
Signed-off-by: NPaul Zimmerman <paulz@synopsys.com>
Tested-by: NStephen Warren <swarren@wwwdotorg.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Make dwc2_hc_handle_tt_clear() return early if the device is
hi-speed.
Signed-off-by: NPaul Zimmerman <paulz@synopsys.com>
Tested-by: NStephen Warren <swarren@wwwdotorg.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

The driver was lacking calls to usb_hcd_link_urb_to_ep(),
usb_hcd_unlink_urb_from_ep(), and usb_hcd_check_unlink_urb(). Add
those now.
Signed-off-by: NPaul Zimmerman <paulz@synopsys.com>
Tested-by: NStephen Warren <swarren@wwwdotorg.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

The parameters to dwc2_host_complete() didn't make much sense.
The 'context' parameter always came from the ->priv member of the
'dwc2_urb' parameter, and both of those always came from a struct
dwc2_qtd. So just pass in the struct dwc2_qtd instead.

This also allows us to null out the dwc2_qtd->urb member after it
is freed, which the calling code forgot to do in several places,
causing random driver crashes from dereferencing the freed pointer.

This also requires the calls to dwc2_hc_handle_tt_clear() to be
moved before the calls to dwc2_host_complete(), otherwise that
routine would do nothing because dwc2_qtd->urb has already been
freed.
Signed-off-by: NPaul Zimmerman <paulz@synopsys.com>
Tested-by: NStephen Warren <swarren@wwwdotorg.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>