In DWC3 versions < 2.50a configured without
Hibernation mode enabled, there will be an
extra link status change interrupt if device
detects host-initiated U3 exit.
In that case, core will generate an unnecessary
U3 -> RESUME transition which should be ignored
by the driver.
Signed-off-by: Felipe Balbi <balbi@ti.com>
Some new revisions of the DWC3 core have
been released, let's add our defines to help
implementing known erratas.
Signed-off-by: Felipe Balbi <balbi@ti.com>
when commit 388e5c5 (usb: dwc3: remove dwc3
dependency on host AND gadget.) changed the
way debugfs files are created, it failed to
note that 'mode' is necessary in Dual Role
mode only while 'testmode' and 'link_state'
are valid in Dual Role and Peripheral-only
builds. Fix this while also converting pre-
processor conditional to C conditionals.
Signed-off-by: Felipe Balbi <balbi@ti.com>
nobody should be modifying that structure and
debugfs has already being fixed to take const
arguments, so we won't cause any new compile
warnings.
Signed-off-by: Felipe Balbi <balbi@ti.com>
whenever we grab an unknown link_state we
were printing the entire register value as
a integer but that's hardly useful; instead,
let's print only the bogus state value.
Signed-off-by: Felipe Balbi <balbi@ti.com>
by moving to threaded IRQs, we allow our IRQ
priorities to be configurable when running with
realtime patch. Also, since we're running in
thread context, we can call functions which
might sleep, such as sysfs_notify() without
problems.
Signed-off-by: Felipe Balbi <balbi@ti.com>
Adds suspend and resume callbacks to exynos dwc3 driver as part of
power management support.
This change does gating of dwc3 clock during suspend/resume cycles.
Signed-off-by: Abhilash Kesavan <a.kesavan@samsung.com>
Signed-off-by: Vikas C Sajjan <vikas.sajjan@linaro.org>
CC: Doug Anderson <dianders@chromium.org>
Tested-by: Vivek Gautam <gautam.vivek@samsung.com>
[ balbi@ti.com : refreshed to current linus/master ]
Signed-off-by: Felipe Balbi <balbi@ti.com>
this patch implements basic suspend/resume
functionality for the OMAP glue layer.
Tested-by: Vivek Gautam <gautam.vivek@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
we're not using those fields of the structure,
might as well remove them.
Tested-by: Vivek Gautam <gautam.vivek@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Add support for basic power management on
the dwc3 driver. While there is still lots
to improve for full PM support, this minimal
patch will already make sure that we survive
suspend-to-ram and suspend-to-disk without
major issues.
Cc: Vikas C Sajjan <vikas.sajjan@linaro.org>
Tested-by: Vivek Gautam <gautam.vivek@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This will be used during resume to verify
if we should reconnect our pullups or not.
Tested-by: Vivek Gautam <gautam.vivek@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
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 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>
Now that we have drivers for omap-usb2 phy and omap-usb3 phy, stop
using nop-usb-xceiv.
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
omap5 is not going to have support for non-dt boot making the platform
data associated with dwc3 useless. Removed it here.
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Includes few minor fixes in dwc3-omap like populating the compatible
string in a correct way, extracting the utmi-mode property properly and
changing the index of get_irq since irq of core is removed from hwmod
entry.
Also updated the documentation with dwc3-omap device tree binding
information.
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
[ balbi@ti.com : fix a compile warning introduced by
this commit ]
Signed-off-by: Felipe Balbi <balbi@ti.com>
drivers/usb/dwc3/ep0.c: In function `__dwc3_ep0_do_control_data':
drivers/usb/dwc3/ep0.c:905: error: `typeof' applied to a bit-field
Looks like a gcc-3.4.5/sparc64 bug.
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>
the params variables on dwc3_gadget_conndone_interrupt()
is only memset() to zero but never used in
that function, so we can safely drop the variable
and memset() call.
Signed-off-by: Felipe Balbi <balbi@ti.com>
commit 3921426 (usb: dwc3: core: move
event buffer allocation out of
dwc3_core_init()) introduced a memory leak
of the coherent memory we use as event
buffers on dwc3 driver.
If the driver is compiled as a dynamically
loadable module and use constantly loads
and unloads the driver, we will continue
to leak the coherent memory allocated during
->probe() because dwc3_free_event_buffers()
is never called during ->remove().
Cc: <stable@vger.kernel.org> # v3.7 v3.8
Signed-off-by: Felipe Balbi <balbi@ti.com>
Add a couple of missing GENERIC_HARDIRQS dependencies to fix link
errors like below on s390:
ERROR: "devm_request_threaded_irq" [drivers/usb/gadget/mv_udc.ko] undefined!
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Two new PHY drivers coming here: one for Samsung,
one for OMAP. Both architectures are adding USB3
support to mainline kernel.
The PHY layer now allows us to have mulitple PHYs
of the same type, which is necessary for platforms
which provide more than one USB peripheral port.
There's also a few cleanups here: removal of __dev*
annotations, conversion of a cast to to_delayed_work(),
and mxs-phy learns about ->set_suspend.
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Merge tag 'xceiv-for-v3.9' of git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb into usb-next
Felipe writes:
usb: xceiv: patches for v3.9 merge window
Two new PHY drivers coming here: one for Samsung,
one for OMAP. Both architectures are adding USB3
support to mainline kernel.
The PHY layer now allows us to have mulitple PHYs
of the same type, which is necessary for platforms
which provide more than one USB peripheral port.
There's also a few cleanups here: removal of __dev*
annotations, conversion of a cast to to_delayed_work(),
and mxs-phy learns about ->set_suspend.
Multiple dwc3 controllers will try to allocate multiple xhci-hcd
interfaces.
Changing platform device IDs from NONE to AUTO to support
such cases.
Signed-off-by: Vivek Gautam <gautam.vivek@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Multiple dwc3 probe calls try to allocate no_op_xceive platform
device. Having static IDs for these will throw sysfs error -EEXIST.
Changing these static platform device IDs to AUTO to enable
multiple dwc3 controller support on a SoC.
Signed-off-by: Vivek Gautam <gautam.vivek@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Added dt support for dwc3 core and update the documentation with
device tree binding information. Getting a PHY is now done using
devm_usb_get_phy_by_phandle() for dt boot.
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
No functional change. Stray statements where removed from dwc3 core.
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Enabled the USB2 and USB3 PHY in probe by calling usb_phy_set_suspend
and disabled the PHYs on driver removal. When PM is implemented this
will be optimized to enable the PHYs only when needed.
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Add an API in the omap glue layer to write to the mailbox register which
can be used by comparator driver(twl). To pass the detection of the attached
device (signified by VBUS, ID) to the dwc3 core, dwc3 core has to write
to the mailbox regiter.
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
The runtime API's takes care of setting the SYSCONFIG register with
appropriate values. Hence explicit writes to SYSCONFIG register is
removed.
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Before accessing any register, runtime API's should be invoked to enable
the clocks. runtime API's are added here to prevent abort during register
access.
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Used of_platform_populate() to create dwc3 core platform_device
from device tree data.
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Used device_for_each_child() to handle child device (dwc3 core) removal
during devexit of dwc3 omap. This is in preparation for creating the child
devices from subnode of dwc3 omap glue using of_platform_populate.
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Using specific chip in compatible strings. Newer SOCs can claim
device by using older string in the compatible list.
Signed-off-by: Vivek Gautam <gautam.vivek@samsung.com>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Reviewed-by: Doug Anderson <dianders@chromium.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>
First of all, that 28 value makes no sense as
HIRD threshold is a 4-bit value, second of all
it's causing issues for OMAP5.
Using 12 because commit cbc725b3 (usb: dwc3:
keep default hird threshold value as 4b1100)
had the intention of setting the maximum allowed
value of 0xc.
Also, original code has been wrong forever, so
this should be backported as far back as
possible.
Cc: <stable@vger.kernel.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>
