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.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.12 (GNU/Linux)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=c796
-----END PGP SIGNATURE-----
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>
DWC3 controller curretly depends on USB && USB_GADGET.
Some hardware may like to use only host feature on dwc3,
or only gadget feature.
So, removing this dependency of USB_DWC3 on USB and USB_GADGET.
Adding the mode of operaiton of DWC3 also here
HOST/GADGET/DUAL_ROLE based on which features are enabled.
[ balbi@ti.com :
. make sure we have default modes for all possible Kernel
configurations.
. Remove the config -> menuconfig change as it's unnecessary
. switch over to IS_ENABLED() ]
CC: Doug Anderson <dianders@chromium.org>
Signed-off-by: Vivek Gautam <gautam.vivek@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
I am not sure, why I found it during SG debugging. But, I noticed that
even when req_queued list was empty, there were some request in
request_list having queued flag true. If I run test second time, it
first removes all request from request_list and hence busy_slot was
wrongly incremented.
Cc: <stable@vger.kernel.org>
Signed-off-by: Pratyush Anand <pratyush.anand@st.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
To work with scatter gather properly, fixes have been done in number of
functions. I will explain requirement of each fixes one by one.
start_slot: used to retrieve all request of SG during cleanup
dwc3_gadget_giveback: We need to skip link TRB if it was one of the
intermediate TRB of SG.
dwc3_prepare_one_trb: We need to track all submitted TRBs during
cleanup. Since, all TRBs would be serially allocated, so we can just
keep starting slot info and we can always find rest of them. We need to
pass sg node number, so that we cab appropriately program ISOC_FIRST/ISOC,
Chain etc.
dwc3_prepare_trbs: last_one should be set when it is last node
of SG as well as last node of request_list.
__dwc3_cleanup_done_trbs: It has been prepared after re-factorization of
dwc3_cleanup_done_reqs. It is called for each TRB of SG.
Signed-off-by: Pratyush Anand <pratyush.anand@st.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
UPDATE_TRANSFER does not need any parameters. So, no need to prepare it.
Signed-off-by: Pratyush Anand <pratyush.anand@st.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
When we reach to link trb, we just need to increase free_slot and then
calculate TRB. Return is not correct, as it will cause wrong TRB DMA
address to fetch in case of update transfer.
Cc: <stable@vger.kernel.org>
Signed-off-by: Pratyush Anand <pratyush.anand@st.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
There were still some corner cases where isoc transfer was not able to
restart, specially when missed isoc does not happen , and in fact gadget does
not queue any new request during giveback.
Cleanup function calls giveback first, which provides a way to queue
another request to gadget. But gadget did not had any data. So , it did
not call ep_queue. To twist it further, gadget did not queue till
cleanup for last queued TRB is called. If we ever reach this scenario,
we must call END TRANSFER, so that we receive a new xfernotready with
information about current microframe number.
Also insure that there is no request submitted to core when issuing END
TRANSFER.
Cc: <stable@vger.kernel.org> # v3.8
Signed-off-by: Pratyush Anand <pratyush.anand@st.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Its better to return from each if condition as they are mutually
exclusive.
Signed-off-by: Pratyush Anand <pratyush.anand@st.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
There are two reasons to generate missed isoc.
1. when the host does not poll for all the data.
2. because of application-side delays that prevent all the data from
being transferred in programmed microframe.
Current code was able to handle first case only. This patch handles
scenario 2 as well.Scenario 2 sometime may occur with complex gadget
application, however it can be easily reproduced for testing purpose as
follows:
a. use isoc binterval as 1 in f_sourcesink.
b. use pattern=0
c. introduce a delay of 150us deliberately in source_sink_complete, so
that after few frames it lands into scenario 2.
d. now run testusb 16 (isoc in test). You will notice that if this
patch is not applied then isoc transfer is not able to recover after
first missed.
Current patch's approach is as under:
If missed isoc occurs and there is no request queued then issue END
TRANSFER, so that core generates next xfernotready and we will issue a
fresh START TRANSFER.
If there are still queued request then wait, do not issue either END or
UPDATE TRANSFER, just attach next request in request_list during giveback.
If any future queued request is successfully transferred then we will issue
UPDATE TRANSFER for all request in the request_list.
Cc: <stable@vger.kernel.org> # v3.6 v3.7 v3.8
Signed-off-by: Pratyush Anand <pratyush.anand@st.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Synopsys says:
The HIRD Threshold field must be set to ‘0’ when the device core is
operating in super speed mode.
This patch implements above statement.
Cc: <stable@vger.kernel.org> # v3.6 v3.7 v3.8
Acked-by: Paul Zimmerman <paulz@synopsys.com>
Signed-off-by: Pratyush Anand <pratyush.anand@st.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
dwc3_gadget_set_ep_config expects maxburst as incremented by 1. So, by
default initialize ep->maxburst to 1 for ep0.
Cc: <stable@vger.kernel.org>
Signed-off-by: Pratyush Anand <pratyush.anand@st.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
The devm_ functions allocate memory that is released when a driver
detaches. This makes the code smaller and a bit simpler.
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Currently we're allocating an entire page to
serve as our event buffer. Provided our events
are 4 bytes long, it's very unlikely we will
even trigger 1k events at once.
Even in the worst case scenario where every
endpoint triggers one event and we still have
a couple of error events, that would still
be less than 40 events.
In order to cope with future versions of the
IP which could (or could not) increase the
amount of possible events to trigger
simultaneously, we're using an arbitrary size
of 64 events for our event buffer.
We're saving 3840 bytes by doing so.
Signed-off-by: Felipe Balbi <balbi@ti.com>
As with dwc_readl/writel, the global registers are specified as
offsets starting from the beginning of the xHCI address space,
but the memory region pointed to by dwc->regs already maps to
the start of the global addresses. Fix by offsetting each of the
regs relative to DWC3_GLOBALS_REGS_START.
Signed-off-by: Jack Pham <jackp@codeaurora.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>
CONFIG_HOTPLUG is going away as an option so __devexit is no
longer needed.
Signed-off-by: Bill Pemberton <wfp5p@virginia.edu>
Cc: Peter Korsgaard <jacmet@sunsite.dk>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Acked-by: Felipe Balbi <balbi@ti.com>
Cc: Li Yang <leoli@freescale.com>
Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: Wan ZongShun <mcuos.com@gmail.com>
Cc: Ben Dooks <ben-linux@fluff.org>
Cc: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
CONFIG_HOTPLUG is going away as an option so __devinit is no longer
needed.
Signed-off-by: Bill Pemberton <wfp5p@virginia.edu>
Cc: Peter Korsgaard <jacmet@sunsite.dk>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Acked-by: Felipe Balbi <balbi@ti.com>
Cc: Li Yang <leoli@freescale.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Cc: Geoff Levand <geoff@infradead.org>
Cc: Wan ZongShun <mcuos.com@gmail.com>
Cc: Olav Kongas <ok@artecdesign.ee>
Cc: Lennert Buytenhek <kernel@wantstofly.org>
Cc: Ben Dooks <ben-linux@fluff.org>
Cc: Kukjin Kim <kgene.kim@samsung.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
CONFIG_HOTPLUG is going away as an option so __devexit_p is no longer
needed.
Signed-off-by: Bill Pemberton <wfp5p@virginia.edu>
Cc: Peter Korsgaard <jacmet@sunsite.dk>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Acked-by: Felipe Balbi <balbi@ti.com>
Cc: Li Yang <leoli@freescale.com>
Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: Wan ZongShun <mcuos.com@gmail.com>
Cc: Ben Dooks <ben-linux@fluff.org>
Cc: Kukjin Kim <kgene.kim@samsung.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Peter Korsgaard <jacmet@sunsite.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 392142 moved event buffer allocation out of dwc3_core_init() but
event buffer allocation uses the cached copy of hwparams to determine
the number of event buffers and the caching is done in dwc3_core_init.
So moved dwc3_cache_hwparams function before dwc3_alloc_event_buffers so
that dwc3_alloc_event_buffers sees the correct number of event buffers.
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
We can finaly drop HAVE_CLK dependency from exynos glue layer
now that clk API provides no-op stubs when it's not linked
into the kernel.
We're also switching over event buffer allocation to devm_kzalloc()
and moving the allocation out of dwc3_core_init() so that can be
re-used when implementing PM support for v3.9.
After the introduction of PLATFORM_DEVID_AUTO, we can also drop the
homebrew platform device ID handling we had on dwc3 core and let
driver core take care of that for us.
Exynos glue layer learns about DeviceTree and drops platform_data
support completely.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.12 (GNU/Linux)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=wqLI
-----END PGP SIGNATURE-----
Merge tag 'dwc3-for-v3.8' of git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb into usb-next
USB dwc3 patches from Felipe:
"usb: dwc3: patches for v3.8
We can finaly drop HAVE_CLK dependency from exynos glue layer
now that clk API provides no-op stubs when it's not linked
into the kernel.
We're also switching over event buffer allocation to devm_kzalloc()
and moving the allocation out of dwc3_core_init() so that can be
re-used when implementing PM support for v3.9.
After the introduction of PLATFORM_DEVID_AUTO, we can also drop the
homebrew platform device ID handling we had on dwc3 core and let
driver core take care of that for us.
Exynos glue layer learns about DeviceTree and drops platform_data
support completely."
commit 380f0d2 (usb: dwc3: core: switch event
buffer allocation to devm_kzalloc()) was incomplete
leaving a trailing kfree(evt) in an error exit
path.
Fix this problem by removing the trailing kfree(evt).
Cc: Julia Lawall <julia.lawall@lip6.fr>
Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
We are removing plat data which was used till now to init and
exit phy. We no longer need this since dwc3-core takes care of
initializing and shutting-down the phy using usb_phy_init()
and usb_phy_shutdown().
Signed-off-by: Vivek Gautam <gautam.vivek@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This patch adds support to parse probe data for
dwc3-exynos driver using device tree.
Signed-off-by: Vivek Gautam <gautam.vivek@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
The lockless implementation of the unique id is quite impressive (:P)
but dirver's core can handle it, we can remove it and make our code a
little smaller.
Cc: Anton Tikhomirov <av.tikhomirov@samsung.com>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
commit 93abe8e (clk: add non CONFIG_HAVE_CLK routines)
added clk API stubs when !defined(CONFIG_HAVE_CLK).
This allows us to remove the HAVE_CLK dependency from
Exynos' glue layer and let it compile always.
Signed-off-by: Felipe Balbi <balbi@ti.com>
We call usb_phy_init() from dwc3_core_init() during
probe, so adding usb_phy_shutdown() to dwc3_core_exit()
while removing the device so we don't keep PHYs
turned on, consuming power, unnecessarily.
Signed-off-by: Vivek Gautam <gautam.vivek@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
If a USB transfer has already been started, meaning
we have already issued StartTransfer command to that
particular endpoint, DWC3_EP_BUSY flag has also
already been set.
When we try to cancel this transfer which is already
in controller's cache, we will not receive XferComplete
event and we must clear DWC3_EP_BUSY in order to allow
subsequent requests to be properly started.
The best place to clear that flag is right after issuing
DWC3_DEPCMD_ENDTRANSFER.
Cc: stable@vger.kernel.org # v3.4 v3.5 v3.6
Reported-by: Moiz Sonasath <m-sonasath@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This patch is in preparation for adding PM support
dwc3 driver. We want to re-use dwc3_core_init and
dwc3_core_exit() functions on resume() and suspend()
callbacks respectively.
Moving even buffer allocation away from dwc3_core_init()
will allow us to reuse the event buffer which was allocated
long ago on our probe() routine.
Signed-off-by: Felipe Balbi <balbi@ti.com>
The rest of the driver is using devm_kzalloc() where possible
and this patch is just making event buffer allocation follow
the example.
Signed-off-by: Felipe Balbi <balbi@ti.com>
This resolves the merge problems with:
drivers/usb/dwc3/gadget.c
drivers/usb/musb/tusb6010.c
that had been seen in linux-next.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Some much needed changes for our dwc3 driver. First there's a
rework on the ep0 handling due to some Silicon issue we uncovered
which affects all users of this IP core (there's a missing
XferNotReady(DATA) event in some conditions). This issue which
show up as a SETUP transfers which wouldn't complete ever and
we would fail TD 7.06 of the Link Layer Test from USB-IF and
Lecroy's USB3 Exerciser.
We also fix a long standing bug regarding EP0 enable sequencing
where we weren't setting a particular bit (Ignore Sequence
Number). Since we never saw any problems caused by that, it
didn't deserve being sent to stable tree.
On this pull request we also fix Burst Size initialization which
should be done only in SuperSpeed and we were mistakenly setting
Burst Size to the maximum value on non-SuperSpeed mode. Again,
since we never saw any problems caused by that, we're not sending
this patch to stable.
There's also a memory ordering fix regarding usage of bitmaps in
dwc3 driver.
You will also find some sparse warnings fix, a fix for missed
isochronous packets when the endpoint is already busy, and a
fix for synchronization delay on dwc3_stop_active_transfer().
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.12 (GNU/Linux)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=Lqwl
-----END PGP SIGNATURE-----
Merge tag 'dwc3-for-v3.7' of git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb into usb-next
usb: dwc3: patches for v3.7 merge window
Some much needed changes for our dwc3 driver. First there's a
rework on the ep0 handling due to some Silicon issue we uncovered
which affects all users of this IP core (there's a missing
XferNotReady(DATA) event in some conditions). This issue which
show up as a SETUP transfers which wouldn't complete ever and
we would fail TD 7.06 of the Link Layer Test from USB-IF and
Lecroy's USB3 Exerciser.
We also fix a long standing bug regarding EP0 enable sequencing
where we weren't setting a particular bit (Ignore Sequence
Number). Since we never saw any problems caused by that, it
didn't deserve being sent to stable tree.
On this pull request we also fix Burst Size initialization which
should be done only in SuperSpeed and we were mistakenly setting
Burst Size to the maximum value on non-SuperSpeed mode. Again,
since we never saw any problems caused by that, we're not sending
this patch to stable.
There's also a memory ordering fix regarding usage of bitmaps in
dwc3 driver.
You will also find some sparse warnings fix, a fix for missed
isochronous packets when the endpoint is already busy, and a
fix for synchronization delay on dwc3_stop_active_transfer().
nop xceiv got its own header to avoid polluting otg.h. It has also
learned to work as USB2 and USB3 phys so we can use it on USB3
controllers.
Together with those two changes to nop xceiv, we're adding basic
PHY support to dwc3 driver, this is to allow platforms which actually
have a SW-controllable PHY talk to them through dwc3 driver.
We're adding a new phy driver for the OMAP architecture. This driver
is for the PHY found in OMAP4 SoCs, and a new phy driver for the
marvell architecture. An extra phy driver - for Tegra SoCs - is now
moving from arch/arm/mach-tegra* to drivers/usb/phy.
Also here, there's the creation of <linux/usb/phy.h> which should be
used from now on for PHY drivers, even those which don't support
OTG.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.12 (GNU/Linux)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=/qVp
-----END PGP SIGNATURE-----
Merge tag 'xceiv-for-v3.7' of git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb into usb-next
usb: xceiv: patches for v3.7 merge window
nop xceiv got its own header to avoid polluting otg.h. It has also
learned to work as USB2 and USB3 phys so we can use it on USB3
controllers.
Together with those two changes to nop xceiv, we're adding basic
PHY support to dwc3 driver, this is to allow platforms which actually
have a SW-controllable PHY talk to them through dwc3 driver.
We're adding a new phy driver for the OMAP architecture. This driver
is for the PHY found in OMAP4 SoCs, and a new phy driver for the
marvell architecture. An extra phy driver - for Tegra SoCs - is now
moving from arch/arm/mach-tegra* to drivers/usb/phy.
Also here, there's the creation of <linux/usb/phy.h> which should be
used from now on for PHY drivers, even those which don't support
OTG.
We will be adding support for transceivers on
dwc3 driver but not all boards have controllable
transceivers.
For those which don't provide controllable transceivers
we will register nop transceivers.
Signed-off-by: Felipe Balbi <balbi@ti.com>
We will be adding support for transceivers on
dwc3 driver but not all boards have controllable
transceivers.
For those which don't provide controllable transceivers
we will register nop transceivers.
Note that once OMAP's transceiver drivers reach mainline,
this glue layer will change accordingly.
Signed-off-by: Felipe Balbi <balbi@ti.com>
We will be adding support for transceivers on
dwc3 driver but not all boards have controllable
transceivers.
For those which don't provide controllable transceivers
we will register nop transceivers.
Signed-off-by: Felipe Balbi <balbi@ti.com>
If xfernotready is received and there is no request in request_list then
REQUEST_PENDING flag must be set, so that next request in ep queue is executed.
In case of isoc transfer, if xfernotready is already elapsed and even first
request has not been queued to request_list, then issue END TRANSFER, so that
you can receive xfernotready again and can have notion of current microframe.
Signed-off-by: Pratyush Anand <pratyush.anand@st.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Populate the resources for xhci afresh instead of directly using the
*struct resource* of core. *resource* structure has parent, sibling,
child pointers which should be filled only by resource API's. By
directly using the *resource* pointer of core in xhci, these parent,
sibling, child pointers are already populated even before
*platform_device_add* causing side effects.
Cc: stable@vger.kernel.org # v3.4, v3.5
Reported-by: Ruchika Kharwar <ruchika@ti.com>
Tested-by: Moiz Sonasath <m-sonasath@ti.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
In case of ep0 out, if length is not aligned to maxpacket size then we use
dwc->ep_bounce_addr for dma transfer and not request->dma. Since, we have
alreday done memcpy from dwc->ep0_bounce to request->buf, so we do not need to
issue cache sync function. In fact, cache sync function will bring wrong data
in request->buf from request->dma in this scenario.
So, cache sync function must not be executed in case of ep0 bounced.
Cc: <stable@vger.kernel.org> # v3.4 v3.5
Signed-off-by: Pratyush Anand <pratyush.anand@st.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit removes USB_GADGET_DUALSPEED and USB_GADGET_SUPERSPEED
Kconfig options. Since now kernel allows many UDC drivers to be
compiled, those options may turn to no longer be valid. For
instance, if someone decides to build UDC that supports super
speed and UDC that supports high speed only, the latter will be
"assumed" to support super speed since USB_GADGET_SUPERSPEED will
be selected by the former.
The test of whether CONFIG_USB_GADGET_*SPEED was defined was just
an optimisation which removed otherwise dead code (ie. if UDC is
not dual speed, there is no need to handle cases that can happen
if speed is high). This commit removes those checks.
Signed-off-by: Michal Nazarewicz <mina86@mina86.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
When connection is established non-ss mode, endpoint.maxburst is correctly set
to 0, this means that current code will set maxburst bitfield on DEPCFG's
parameter 0 to the highest possible value (0x0f) which is wrong.
Even though this hasn't caused any issues so far (HW seems to ignore that when
not running in SS mode) we want to make sure maxburst bitfield is only set to
anything other than zero if we're running on SuperSpeed mode. In order to
achieve that, let's check for gadget's operating speed before setting maxburst
bitfield when issuing DEPCFG command.
[ balbi@ti.com : improved commit log a bit in order to clarify the situation ]
Signed-off-by: Chanho Park <chanho61.park@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
As a bitmap is used for free/used. As a device freed
all memory operations must be scheduled before the bitmap
is manipulated.
Signed-off-by: Oliver Neukum <oneukum@suse.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
In case some gadget driver tries to enable an endpoint
which is already enabled, we print a nice WARN so we
can track broken gadget drivers. The only problem is that
we're printing the WARN when we already changed endpoint's
name, which would result in endpoints named as:
ep1in-bulk-bulk-bulk-bulk-bulk-bulk-bulk
To prevent that, we will continue to print the WARN,
but do so before changing endpoint's name and return
early.
Signed-off-by: Felipe Balbi <balbi@ti.com>
dwc3_stop_active_transfer has been called from two places. After each
calling of this function , we should allow 100 us delay to synchronize
with interconnect.
It would be better if we put this delay in that function only, rather
than into calling routine of this function.
Signed-off-by: Pratyush Anand <pratyush.anand@st.com>
Reported-by: Michel Sanches <michel.sanches@st.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
When MISSED_ISOC is set, BUSY is also set. Since, we are handling
MISSED_ISOC as a separate case in third scenario, therefore handle only
BUSY but not MISSED_ISOC in second scenario.
Signed-off-by: Pratyush Anand <pratyush.anand@st.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This patch fixes the following sparse warnings:
drivers/usb/dwc3/gadget.c:1096:7: warning: symbol 'ret' shadows an earlier one
drivers/usb/dwc3/gadget.c:1058:8: originally declared here
drivers/usb/dwc3/gadget.c:1100:16: warning: symbol 'dwc' shadows an earlier one
drivers/usb/dwc3/gadget.c:1057:15: originally declared here
drivers/usb/dwc3/gadget.c:1118:16: warning: symbol 'dwc' shadows an earlier one
drivers/usb/dwc3/gadget.c:1057:15: originally declared here
drivers/usb/dwc3/gadget.c:1800:19: warning: symbol 'dep' shadows an earlier one
drivers/usb/dwc3/gadget.c:1778:18: originally declared here
Also, fix the potential checkpatch errors around the if() loops that
this fix patch can create.
Signed-off-by: Moiz Sonasath <m-sonasath@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
commit 68d3e66 (usb: dwc3: ep0: fix for possible early
delayed_status) added handling for early delayed status,
but the current code only works because so far delayed
status will always be on the IN direction.
This patch makes the code more robust by making sure that
we can handle all directions properly.
Signed-off-by: Felipe Balbi <balbi@ti.com>
Due to the late Silicon limitation found, we are
now pre-starting DATA phase's TRBs. If, still, we
get XferNotReady(DATA) we will ignore it unless
we're getting it for the wrong direction.
In that case we must keep the error case handling
plus add a ENDTRANSFER command to forcefully end
the Data TRB we started previously, then continue
to SetStall and so on.
Signed-off-by: Felipe Balbi <balbi@ti.com>
We uncovered a limitation of this core WRT to the
Link Layer Compliance Suite's TD7.06.
On that test, host will start a GetDescriptor(DEVICE)
standard request, but it will do so only on the
SETUP phase, meaning there will *NOT* be any DATA or
STATUS phases.
The idea of the test is to verify robustness of the
IP WRT framing errors, so the test will send a
sequence of different SETUP_DPs each with a different
framing error and the Suite expects us to be able to
receive all SETUP_DPs with no timeouts.
This core, has the ability to tell us which phase the
host is expecting before we start it. Whenever we
receive a TP or DP when no transfers are cached on
the internal IP's caches, the IP will generate a
XferNotReady event with status informing us (in case
of physical ep0/ep1) if it's related to DATA or STATUS
phases - SETUP phase is expected to be prestarted.
Because we're always waiting for XferNotReady
events for DATA and STATUS phases, we will never
be able to know that the Host wants to start another
SETUP phase instead, which will render us "not
compliant" with TD7.06.
In order to "fix" the problem we must not rely
on XferNotReady events for the DATA phase and try
to always pre-start DATA transfers on physical
endpoints 0 and 1. If host goes back to SETUP phase
from DATA phase we will receive a XferComplete for
that phase with TRB's status set to SETUP_PENDING,
which is only useful for printing a debugging log as
the core expects us to still go through to the STATUS
phase, initiate a CONTROL_STATUS TRB just so it
completes right away and, only then, we go back to
the pending SETUP phase.
SNPS has decided to modify the programming model of
the core so that on-demand DATA phases will not be
supported anymore. Note that this limitation does not
affect 2-stage transfers, meaning that if TD7.06 would
start a 2-stage transfer instead of a 3-stage transfer,
we would receive a "fake" XferNotReady(STATUS) which
would complete right after being initiated with
SETUP_PENDING status.
Other endpoints are also not affected, so we can still
use on-demand transfers on Bulk/Isoc/Interrupt endpoints.
Signed-off-by: Felipe Balbi <balbi@ti.com>
Databook doesn't say we should stall if we
get XferNotReady(STATUS) while we're expecting
something else.
Instead of stalling and restarting, tests have
proven that ignoring the event is far more
effective.
This problem has been caught while rewriting
ep0 handling in order we pass Link Layer TD7.6.
Signed-off-by: Felipe Balbi <balbi@ti.com>
We can return early from each if () branch
and split the special cases for clarity. While
at that also add a comment to the delayed_status
case.
Signed-off-by: Felipe Balbi <balbi@ti.com>
lots of changes for the dwc3 driver which will make
the driver a lot more stable and some changes which
are just cosmetic.
The bulk of changes is related to mis-defined macros
which were never used before, some fixes to error path
which e.g. prevent the driver from initiating two
transfer on ep0out in case of stall, some fixes to
request dequeueing and the End Transfer Command.
We have some changes to U1/U2 handling where we were
enabling those transtions at the wrong spot (though
we haven't seen a problem from that as of today).
A few patches will make it easier to add support for
newer releases of the core by adding definitions for
new registers and changing the code to act accordingly
when certain revisions are detected.
There's also the usual comestic changes to make the
driver easier to maintain and make it easier for new-
comers to understand the driver. Also one patch fixing
a double inclusion of a header.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.12 (GNU/Linux)
iQIcBAABAgAGBQJP8VNzAAoJEIaOsuA1yqREqpYP/Rq8Uy4p1TougBR64CZBmDIk
g6kmr3PDPR1euI4rCXRRAQ+gHVo7sY4Ishf7FIj38Aq4J6muQ5bBHX43zqobtFor
V7GB+rKGwlI14zYoH9tZo0NtiD3QjfmI/uiN7o4PpnHZCOUPR3c6xqvOUvNU7vee
RKfnoWQbOBE7tQfHXQdulVdcbyddWJPQ/1CGOB44WcIqfGT8ZsMWQc+i4QScCA9E
8lGKbXq10dw3E8PyxqtejcSa+nO8B7D3TwlLH1JNZD8nNKsOdhxZO3Xkm0OZoOVA
5puQfIRJFRnIN1FyqFTfv+yD0O1bzuxz/Qrd0Tkv0HAfc/NMQntpLIe4mYFiJYyq
H6xOcr87X3TXx7oz2JxIjo3Y5ylwgW2dYfTvPF6u4N0D6hkflx3ebko/mklOkYP2
6TH8H1zd1x2wUkgPaCeLXiMVEyWvIh8MGZ2o9KMb73gPRuMQHVVkQFPe/BfY0l7a
c6486uyR9h8BCSAuivbIKPD8ca+dU8bLYl9svrlGIKmJcj7KZmJ8sVT2zfY0+A+k
0P2Yj3SUMP0DCuvMylf18+5npEn60mt2OFbU95RYakXvwCOerGxWfWr0HbqWfUgC
dtxrghS4urZn8mmL/lTvnsR68ypFKaKIgfypuf/NQECMdANB07UQnpl4AYiAbUlK
4OleN7N2/Kny2FE/EvVu
=s04u
-----END PGP SIGNATURE-----
Merge tag 'dwc3-for-v3.6' of git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb into usb-next
usb: dwc3: patches for v3.6 merge window
lots of changes for the dwc3 driver which will make
the driver a lot more stable and some changes which
are just cosmetic.
The bulk of changes is related to mis-defined macros
which were never used before, some fixes to error path
which e.g. prevent the driver from initiating two
transfer on ep0out in case of stall, some fixes to
request dequeueing and the End Transfer Command.
We have some changes to U1/U2 handling where we were
enabling those transtions at the wrong spot (though
we haven't seen a problem from that as of today).
A few patches will make it easier to add support for
newer releases of the core by adding definitions for
new registers and changing the code to act accordingly
when certain revisions are detected.
There's also the usual comestic changes to make the
driver easier to maintain and make it easier for new-
comers to understand the driver. Also one patch fixing
a double inclusion of a header.
This is quite a big pull request and contains patches
all over the place.
omap_udc is now a bit cleaner after removing omap2 support,
fixing some checkpatch.pl warnings and errors, switching over
to generic map/unmap routines and preventing a NULL pointer
de-reference.
s3c-hsotg has been switched over to devm_* API, got some
locking fixes and improvements and it also got an implementation
for the pullup() method.
the mass storage gadgets changed default value of the removable
parameter, dropped some unused options and made "file" and "ro"
module_parameters read-only in some cases.
ffs function got support for HID descriptor.
Some UDCs have been converted to clk_prepare_enable() and
clk_disable_unprepare().
Marvell now got support for its USB3 controller in mainline
after introducing its mv_u3d_core.c driver.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.12 (GNU/Linux)
iQIcBAABAgAGBQJP8VZeAAoJEIaOsuA1yqREu0YP/jSrITte+Za8HMfvV1/eVNtz
eVd+dhx82WnfPUmDHPsC+1IzCFlOIufFsqK/lWaNxVkUaL154lL85TPbxVPggNXA
zvEldifaDahDax2B5MRP8hQKpp8rNrik/ePSPv1Lts5HsfPT2aUOYIcNAPlqdaPs
4x4VejujirUGIgo1swocDOHu2nB9PTqnhtLUgLGaZcAMQtT5z/ao5NGeSugbc7sS
jvci0WKWzjxxPT77ZrcyaOrCmzTCR4yK0DZGFNsyVmY9ATTwSr/By0AgQdm36t6f
xdqjGib+Y2C+6xW35suLo1N+3qErClNuvJtvXlQ5VUpa70dsZTFu8KiCv+td7KA1
9mNeovoAiuWKSgDevqJ8g4mND/LFcrGLyKR2dkyA2NNVANgJpPY3y3sjSXV8USt5
pLGolz3XFQsUejIvrmcsHKIXNrCgJChQeaBvM13dmwhw2SWPcW0OSQnw+kPOQm8W
ByqmwSPIYxGKyd0UIcbqjlV5OXI1FcWIDSlTXbQZBId7YfVYqIuMizVvbZ8yE1pG
RTSuyo/khG4OwVKIQoxYboNYBE2MM32L8G6Hh2ataiw1M0rjIvCh6180xENKQ2I1
iK54ViWctzNx7OC5JozUS+9i5KafRPdbxNHMUPGQQXpcCtb6Q4fmeGTyFYuIfTFK
hRzP4o0SpAu7V+CoZ1Zz
=hbE6
-----END PGP SIGNATURE-----
Merge tag 'gadget-for-v3.6' of git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb into usb-next
usb: gadget: patches for v3.6 merge window
This is quite a big pull request and contains patches
all over the place.
omap_udc is now a bit cleaner after removing omap2 support,
fixing some checkpatch.pl warnings and errors, switching over
to generic map/unmap routines and preventing a NULL pointer
de-reference.
s3c-hsotg has been switched over to devm_* API, got some
locking fixes and improvements and it also got an implementation
for the pullup() method.
the mass storage gadgets changed default value of the removable
parameter, dropped some unused options and made "file" and "ro"
module_parameters read-only in some cases.
ffs function got support for HID descriptor.
Some UDCs have been converted to clk_prepare_enable() and
clk_disable_unprepare().
Marvell now got support for its USB3 controller in mainline
after introducing its mv_u3d_core.c driver.
Although timeout has never been experienced, still to make it
meaningful, its better to return error if it ever occurs.
Signed-off-by: Pratyush Anand <pratyush.anand@st.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
As per databook, ACCEPT{U1,U2}ENA bits should be set after receiving
SetConfiguration Command.
Signed-off-by: Pratyush Anand <pratyush.anand@st.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
as per databook, these bits are cleared by hardware on each USB reset,
so no need to clear it explicitly by software in reset ISR.
Signed-off-by: Pratyush Anand <pratyush.anand@st.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
as per data book any HIRD threshold value greater than 4b1100 is
invalid. So set the maximum valid value as default values.
Signed-off-by: Pratyush Anand <pratyush.anand@st.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
set_halt for ep0 is called to stall a deferred control responses by the
gadget. We already have a function to stall default control endpoint.
This patch points set_halt for ep0 to the already available function.
Signed-off-by: Pratyush Anand <pratyush.anand@st.com>
Signed-off-by: Michel Sanches <michel.sanches@st.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
In case we try to start an invalid test mode, we
will call dwc3_ep0_stall_and_restart() but we will
also call dwc3_ep0_out_start() which will start
a second transfer on ep0.
Let's prevent any problems by returning early in
the error case.
Signed-off-by: Felipe Balbi <balbi@ti.com>
whenever we want to stall ep0, we always call
dwc3_ep0_stall_and_restart() which makes sure
to send ep0state properly rendering the code
in __dwc3_gadget_ep_set_halt() duplicated.
Reported-by: Pratyush Anand <pratyush.anand@st.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
It makes it easier to read and also avoids
setting DWC3_EP_PENDING_REQUEST just so the
next branch evaluates true.
No functional changes otherwise.
Cc: Pratyush Anand <pratyush.anand@st.com>
Cc: Paul Zimmerman <paulz@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Now we are sure that, if res_trans_idx is zero, then endpoint has been
stopped. So it's safe to just return if endpoint is already stopped. No
need to generate warning anymore.
While doing so, it's better to return when res_trans_idx is zero and
decrease one level of indentation.
Signed-off-by: Pratyush Anand <pratyush.anand@st.com>
[ balbi@ti.com: slightly changed commit log ]
Signed-off-by: Felipe Balbi <balbi@ti.com>
Synopsys specification clearly states under section "Device Power-On or
Soft Reset" that DCTL.CSftRst=1 should be first step. So, just follow
what specification says.
Signed-off-by: Pratyush Anand <pratyush.anand@st.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Before taking core out of reset phy must be stable. So wait for 100ms
after clear phy reset.
Signed-off-by: Pratyush Anand <pratyush.anand@st.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
In case of ep_disable and reset interrupt is received and, still there
was at least one request queued for dma transfer, then endpoint is
stopped first. Once endpoint is stopped, callback for all queued
request must be called.
Signed-off-by: Pratyush Anand <pratyush.anand@st.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
In case of ep_dequeue , if dequeued request was submitted for dma
transfer, then endpoint is stopped. Once endpoint is stooped, callback
for the dequeued request must be called.
Signed-off-by: Pratyush Anand <pratyush.anand@st.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
bMaxBurst field on endpoint companion descriptor
is supposed to contain the number of burst minus
1. When passing that to controller drivers, we
should be passing the real number instead (by
incrementing 1).
While doing that, also fix the assumption on
dwc3 that value comes decremented by one.
Signed-off-by: Felipe Balbi <balbi@ti.com>
The definition of DWC3_DCTL_HIRD_THRES macro is
completely wrong. It will only work for when we
want to read the register's contents for that bitfield.
Change the macro so that it can be used to writing to
the register, and when we need to read, we can add
extra right shift of 24 bits.
Signed-off-by: Pratyush Anand <pratyush.anand@st.com>
[ balbi@ti.com: add a commit log ]
Signed-off-by: Felipe Balbi <balbi@ti.com>
By the time we're disabling the endpoint, HW
could already have posted more events to our
event buffer. In that case, we will receive
endpoint events for a disabled endpoint.
In order to protect ourselves from that situation,
we simply ignore endpoint interrupts whenever
the endpoint is disabled.
Tested-by: Pratyush Anand <pratyush.anand@st.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
In case we get disconnected, we will call gadget
driver's disconnect method, which should make
sure to disable all endpoints. At that point
we will call stop_active_transfers() to make
sure we didn't leave any pending request on the
controller.
Tested-by: Pratyush Anand <pratyush.anand@st.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
That IRQ is causing way too much trouble. We have
a different handling which was agreed with IP
provider and has been tested with FPGA and OMAP5.
Tested-by: Pratyush Anand <pratyush.anand@st.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
We never set CMDIOC bit for Start Transfer
command, so that code will never be used.
Tested-by: Pratyush Anand <pratyush.anand@st.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
If event status says that its last completed TRB but TRB is still owned
by HW then break from the loop, because we are not going to get correct
TRB status from trb control/size register.
Signed-off-by: Pratyush Anand <pratyush.anand@st.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
If an IN transfer is missed on isoc endpoint, then driver must insure
that next ep_queue is properly handled.
This patch fixes this issue by starting a new transfer for next queued
request.
Signed-off-by: Pratyush Anand <pratyush.anand@st.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
SOF Number is bit16:3 of DSTS. Correct the mask accordingly.
Signed-off-by: Pratyush Anand <pratyush.anand@st.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
