recover is a much better name than reset, considering
we don't really reset the IP, just run platform-specific
babble recovery algorithm.
while at that, also fix a typo in comment and add kdoc
for recover memeber of platform_ops.
Tested-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
we're not resetting musb at all, just restarting
the session. This means we don't need to touch PHYs
or VBUS or anything like that. Just make sure session
bit is reenabled after MUSB dropped it.
while at that, make sure to tell usbcore that we're
dropping the session and, thus, disconnecting the
device.
Tested-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
All we have to do is, really, drop session bit
and let the session restart.
Big thanks goes to Bin Liu <b-liu@ti.com> for
inspiring this work.
Tested-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
When babble IRQ happens, we need to wait only
5.3us (320 cycles of 60MHz clock), we will give
it some slack and schedule our work a 10 usecs into
the future.
Tested-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
We do *not* want to touch devctl at all when
trying to recover from babble. All we want to
do is mask IRQs until we're done without our
babble recovery, at which point we will unmask
IRQs.
Tested-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
sometimes we want to just mask/unmask interrupts
without touching devctl register. For those
cases, let's introduce musb_enable_interrupts and
musb_disable_interrupts()
Tested-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Whenever babble happens, MUSB controller will
drop session automatically.
The only case where it won't drop the session,
is when we're running on AM335x and SW_SESSION_CTRL
bit has been set. In that case, controller will
not touch session bit so SW has a chance to recover
from babble condition.
Tested-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
We want to check if that particular bit is
set. It could very well be that bootloader
(or romcode) has fiddled with MUSB before
us which could leave other bits set in this
register.
Tested-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
musb->int_usb already contains the correct
information for musb-core to handle babble.
In fact, this very check was just causing a
nonsensical babble interrupt storm.
With this I can get test.sh to run and, even though
all tests fail with timeout, that's still better
than locking up the system due to IRQ storm.
Also, if I remove g_zero and load g_mass_storage,
then everything works fine again.
Tested-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
when musb is operating as host and a remote wakeup
fires up, a resume interrupt will be raised. At that
point SUSPENDM bit is automatically cleared and
RESUME bit is automatically set.
Remove those two from IRQ handler.
Tested-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
There was already a proper place where we were
checking for babble interrupts, move babble
recovery there.
Tested-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
if reset fails, we should return a *negative*
error code, not a positive value.
Tested-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
FSDEV is set for both HIGH and FULL speeds,
the correct HIGHSPEED check is done through
power register's HSMODE bit.
Tested-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
devctl & MUSB_DEVCTL_HM represents a single bit,
just check for the bit, there's really no need
to compare the result against 0.
Tested-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
A recent bug fix I did that was marked for stable backports
introduced a slightly wrong dependency on CONFIG_OMAP_CONTROL_PHY.
I was missing the fact that the PHY driver already stubs out the
omap_control_usb_set_mode, and we only need to add a dependency
to prevent the musb-omap2430 driver from being built-in when
the phy driver is a loadable module, but we should not prevent it
from being built altogether when the phy driver is disabled.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Fixes: ca784be36c ("usb: start using the control module driver")
Cc: <stable@vger.kernel.org> # v3.9+
Acked-by: Acked-by: Pavel Machek <pavel@ucw.cz>
Tested-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Felipe Balbi <balbi@ti.com>
instead of using manually spelled out bit-shits
and iterate over each of the 16-bits (one for
each endpoint) on each direction, we can make use
of for_each_set_bit() which internally uses
find_first_bit().
This makes the code slightly more readable while
also making we only iterate over bits which are
actually set.
Signed-off-by: Felipe Balbi <balbi@ti.com>
As per Mentor Graphics' documentation, we should
always handle TX endpoints before RX endpoints.
This patch fixes that error while also updating
some hard-to-read comments which were scattered
around musb_interrupt().
This patch should be backported as far back as
possible since this error has been in the driver
since it's conception.
Cc: <stable@vger.kernel.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>
We still have a combination of legacy phys and generic phys in
use so we need to support both types of phy for musb_dsps.c.
Cc: Brian Hutchinson <b.hutchman@gmail.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
The value for the multipoint dts property is ignored when parsing with
of_property_read_bool, so we currently have multipoint always set as 1
even if value 0 is specified in the dts file.
Let's fix this to read the value too instead of just the property like
the binding documentation says as otherwise MUSB will fail to work
on devices with Mentor configuration that does not support multipoint.
Cc: Brian Hutchinson <b.hutchman@gmail.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
We need a pm_runtime_get_sync() call from
within musb_gadget_pullup() to make sure
registers are accessible at that time.
The problem is that musb_gadget_pullup() is
called with IRQs disabled and, because of that,
we need to tell pm_runtime that this pm_runtime_get_sync()
is IRQ safe.
We can simply add pm_runtime_irq_safe(), however, because
we need to make our read/write accessor function pointers
have been initialized before trying to use them. This means
that all pm_runtime initialization for musb_core needs to
be moved down so that when we call pm_runtime_irq_safe(),
the pm_runtime_get_sync() that it calls on the parent, won't
cause a crash due to NULL musb_read/write accessors.
Reported-by: Pali Rohár <pali.rohar@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Enable HCD_BH flag for musb host controller driver.
This improves the MSC/UVC through put. With this enabled
even 640x480@30fps webcam streaming is also supported.
Signed-off-by: George Cherian <george.cherian@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
The commit 889ad3b "usb: musb: try a race-free wakeup" breaks device
hotplug enumeraitonn when the device is connected behind a hub while usb
autosuspend is enabled.
Adding finish_resume_work into runtime resume callback fixes the issue.
Also resume root hub is required to resume the bus from runtime suspend,
so move musb_host_resume_root_hub() back to its original location, where
handles RESUME interrupt.
Signed-off-by: Bin Liu <b-liu@ti.com>
Tested-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
bfin_remove() is not (nor should it be) marked as __exit, so we should
not be using __exit_p() wrapper with it, otherwise unbinding through
sysfs does not work properly.
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
The omap musb front-end calls into the phy driver directly
instead of using a generic phy interface, which causes a link
error when the specific driver is not built-in:
drivers/built-in.o: In function `omap2430_musb_disable':
usb/musb/omap2430.c:480: undefined reference to `omap_control_usb_set_mode'
drivers/built-in.o: In function `omap2430_musb_enable':
usb/musb/omap2430.c:466: undefined reference to `omap_control_usb_set_mode'
usb/musb/omap2430.c:447: undefined reference to `omap_control_usb_set_mode'
drivers/built-in.o: In function `omap_musb_set_mailbox':
usb/musb/omap2430.c:273: undefined reference to `omap_control_usb_set_mode'
usb/musb/omap2430.c:304: undefined reference to `omap_control_usb_set_mode'
drivers/built-in.o:(.debug_addr+0xbd9e0): more undefined references to `omap_control_usb_set_mode' follow
This adds an explicit dependency.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Fixes: ca784be36c ("usb: start using the control module driver")
Cc: <stable@vger.kernel.org> # v3.9+
Signed-off-by: Felipe Balbi <balbi@ti.com>
Multiple musb glue drivers depend on the generic usb phy support,
but fail to list it as a dependency in Kconfig. This results
in build erros like:
drivers/built-in.o: In function `am35x_remove':
:(.text+0xadacc): undefined reference to `usb_phy_generic_unregister'
drivers/built-in.o: In function `am35x_probe':
:(.text+0xae1c8): undefined reference to `usb_phy_generic_register'
:(.text+0xae244): undefined reference to `usb_phy_generic_unregister'
drivers/built-in.o: In function `jz4740_remove':
:(.text+0xaf648): undefined reference to `usb_phy_generic_unregister'
drivers/built-in.o: In function `jz4740_musb_init':
:(.text+0xaf694): undefined reference to `usb_phy_generic_register'
This adds the ones that are missing.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Delete private selfpowered variable, and use common one.
Signed-off-by: Peter Chen <peter.chen@freescale.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
1. set AUTOREQ to NONE at the beginning of teardown;
2. add delay for dma pipeline to drain;
3. Do not set USB_TDOWN bit for RX teardown.
The CPPI hw has an issue that when tearing down a RX channel, if
another RX channel is receiving data, the CPPI will lockup.
To workaround the issue, do not set the CPPI TD bit. The steps before
this point ensures the CPPI channel will be torn down properly.
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
The macro EP_MODE_AUTOREG_* should be called EP_MODE_AUTOREQ_*, as they
are used for register AUTOREQ.
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Fix using the bare numbers to set the 'wHubCharacteristics' field of the Hub
Descriptor while the values are #define'd in <linux/usb/ch11.h>.
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
While the code is correct and functions well, it's still
a bit misleading to add the reference operator in from of
the buf argument.
This patch simply removes that operator in order to make
use of buf slightly better to the eyes.
Signed-off-by: Markus Pargmann <mpa@pengutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
since the split of host+gadget mode in commit 74c2e93600 ("usb: musb:
factor out hcd initalization") we leak the usb_hcd struct. We call now
musb_host_cleanup() which does basically usb_remove_hcd() and also sets
the hcd variable to NULL. Doing so makes the finall call to
musb_host_free() basically a nop and the usb_hcd remains around for ever
without anowner.
This patch drops that NULL assignment for that reason.
Fixes: 74c2e93600 ("usb: musb: factor out hcd initalization")
Cc: <stable@vger.kernel.org> # v3.11+
Cc: Daniel Mack <zonque@gmail.com>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Commit 82c02f58ba ("usb: musb: Allow multiple glue layers to be
built in") enabled selecting multiple glue layers, which in turn
exposed things more for randconfig builds. If NOP_USB_XCEIV is
built-in and TUSB6010 is a loadable module, we will get:
drivers/built-in.o: In function `tusb_remove':
tusb6010.c:(.text+0x16a817): undefined reference to `usb_phy_generic_unregister'
drivers/built-in.o: In function `tusb_probe':
tusb6010.c:(.text+0x16b24e): undefined reference to `usb_phy_generic_register'
make: *** [vmlinux] Error 1
Let's fix this the same way as commit 70c1ff4b3c ("usb: musb:
tusb-dma can't be built-in if tusb is not").
And while at it, let's not allow selecting the glue layers except
on platforms really using them unless COMPILE_TEST is specified:
- TUSB6010 is in practise only used on omaps
- DSPS is only used on TI platforms
- UX500 is only used on STE platforms
Cc: Linus Walleij <linus.walleij@linaro.org>
Reported-by: Jim Davis <jim.epost@gmail.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
!strncmp(buf, "force host", 9) is true if and only if buf starts with
"force hos". This was obviously not what was intended. The same error
exists for "force full-speed", "force high-speed" and "test
packet". Using strstarts avoids the error-prone hardcoding of the
prefix length.
For consistency, also change the other occurences of the !strncmp
idiom.
Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: Felipe Balbi <balbi@ti.com>
commit cc92f681 (usb: musb: Populate new IO
functions for blackfin) added a typo which
prevented MUSB's blackfin glue layer from being
built. Due to lack of tests and compilers for
that architecture, the typo ended up being
merged and causing a build regression.
Fix that here
Cc: Tony Lindgren <tony@atomide.com>
Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Blackfin's MUSB implementation lacks a bunch of
registers which they end up not defining a macro
for. In order to avoid build breaks, let's ifdef
out some of the registers from our regdump debugfs
utility so that we don't try to use those on
Blackfin builds.
Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Here's the set of driver core patches for 3.19-rc1.
They are dominated by the removal of the .owner field in platform
drivers. They touch a lot of files, but they are "simple" changes, just
removing a line in a structure.
Other than that, a few minor driver core and debugfs changes. There are
some ath9k patches coming in through this tree that have been acked by
the wireless maintainers as they relied on the debugfs changes.
Everything has been in linux-next for a while.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2
iEYEABECAAYFAlSOD20ACgkQMUfUDdst+ylLPACg2QrW1oHhdTMT9WI8jihlHVRM
53kAoLeteByQ3iVwWurwwseRPiWa8+MI
=OVRS
-----END PGP SIGNATURE-----
Merge tag 'driver-core-3.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
Pull driver core update from Greg KH:
"Here's the set of driver core patches for 3.19-rc1.
They are dominated by the removal of the .owner field in platform
drivers. They touch a lot of files, but they are "simple" changes,
just removing a line in a structure.
Other than that, a few minor driver core and debugfs changes. There
are some ath9k patches coming in through this tree that have been
acked by the wireless maintainers as they relied on the debugfs
changes.
Everything has been in linux-next for a while"
* tag 'driver-core-3.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (324 commits)
Revert "ath: ath9k: use debugfs_create_devm_seqfile() helper for seq_file entries"
fs: debugfs: add forward declaration for struct device type
firmware class: Deletion of an unnecessary check before the function call "vunmap"
firmware loader: fix hung task warning dump
devcoredump: provide a one-way disable function
device: Add dev_<level>_once variants
ath: ath9k: use debugfs_create_devm_seqfile() helper for seq_file entries
ath: use seq_file api for ath9k debugfs files
debugfs: add helper function to create device related seq_file
drivers/base: cacheinfo: remove noisy error boot message
Revert "core: platform: add warning if driver has no owner"
drivers: base: support cpu cache information interface to userspace via sysfs
drivers: base: add cpu_device_create to support per-cpu devices
topology: replace custom attribute macros with standard DEVICE_ATTR*
cpumask: factor out show_cpumap into separate helper function
driver core: Fix unbalanced device reference in drivers_probe
driver core: fix race with userland in device_add()
sysfs/kernfs: make read requests on pre-alloc files use the buffer.
sysfs/kernfs: allow attributes to request write buffer be pre-allocated.
fs: sysfs: return EGBIG on write if offset is larger than file size
...
This removes the ifdef clutter a bit and saves few lines.
It also makes it easier to detect the remaining places
where we have conditional building of code done based
on if defined for things like DMA.
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
There's no reason any longer to keep it as a choice now that
the IO access has been fixed.
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This allows the endpoints to work when multiple MUSB glue
layers are built in.
Cc: Fabio Baltieri <fabio.baltieri@linaro.org>
Cc: Lee Jones <lee.jones@linaro.org>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Apelete Seketeli <apelete@seketeli.net>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Change to use new IO access. This allows us to build in multiple
MUSB glue layers.
[ balbi@ti.com : switch to EXPORT_SYMBOL_GPL()
fix long lines ]
Cc: Fabio Baltieri <fabio.baltieri@linaro.org>
Cc: Lee Jones <lee.jones@linaro.org>
Cc: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Populate new IO functions for blackfin
Cc: Bryan Wu <cooloney@gmail.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Let's populate the new IO functions for tusb6010 but not use
them yet.
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
MUSB currently breaks badly if we try to build in support
for multiple platforms. This also happens if done as loadable
modules, which is not nice for distros.
Let's fix the issue by adding new struct musb_io for the IO
access functions that the platform code can populate. Note
that we don't want to use the current ops as that's really
platform_data and and set as a const.
This should allow eventually adding function pointers also
for the DMA code to struct musb_io, but that's a whole
different set of patches. For now, let's just fix the PIO
access.
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Disable the MUSB interrupts till MUSB is recovered fully from BABBLE
condition. There are chances that we could get multiple interrupts
till the time the babble recover work gets scheduled. Sometimes
this could even end up in an endless loop making MUSB itself unusable.
Reported-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: George Cherian <george.cherian@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
There is a poll loop for max 25us for HS devices. Now guess what, I
tested it in gadget mode and forgot about the little detail. Nobody seem
to have it noticed…
This patch adds the missing logic for hostmode so it is recognized in
host and device mode properly.
Fixes: 50aea6fca7 ("usb: musb: cppi41: fire hrtimer according to
programmed channel length")
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
musb registers can be dumped using the file regdump
which is created in debugfs. Up to now hard coded
register addresses are used for that. Different glue
layers however have different register addresses. The
patch addresses this issue by substituting bare register
addresses with defines.
Signed-off-by: Roman Byshko <rbyshko@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
On am335x-evm with musb in host mode and using it as a wakeup source the
following happens once the CPU comes out of suspend to ram:
|PM: Wakeup source MPU_WAKE
|PM: noirq resume of devices complete after 15.453 msecs
|PM: early resume of devices complete after 2.222 msecs
|PM: resume of devices complete after 507.351 msecs
|Restarting tasks ...
|------------[ cut here ]------------
|WARNING: CPU: 0 PID: 322 at drivers/usb/core/urb.c:339 usb_submit_urb+0x494/0x4c8()
|URB cc0db380 submitted while active
|[<c0348e64>] (usb_submit_urb) from [<c0340f94>] (hub_activate+0x2b8/0x49c)
|[<c0340f94>] (hub_activate) from [<c03411dc>] (hub_resume+0x14/0x1c)
|[<c03411dc>] (hub_resume) from [<c034be10>] (usb_resume_interface.isra.4+0xdc/0x110)
|[<c034be10>] (usb_resume_interface.isra.4) from [<c034beb0>] (usb_resume_both+0x6c/0x13c)
|[<c034beb0>] (usb_resume_both) from [<c034cca4>] (usb_runtime_resume+0x10/0x14)
|[<c034cca4>] (usb_runtime_resume) from [<c02bbd80>] (__rpm_callback+0x2c/0x60)
|[<c02bbd80>] (__rpm_callback) from [<c02bbdd4>] (rpm_callback+0x20/0x74)
|[<c02bbdd4>] (rpm_callback) from [<c02bcc48>] (rpm_resume+0x380/0x548)
|[<c02bcc48>] (rpm_resume) from [<c02bcb00>] (rpm_resume+0x238/0x548)
|[<c02bcb00>] (rpm_resume) from [<c02bd08c>] (__pm_runtime_resume+0x64/0x94)
|[<c02bd08c>] (__pm_runtime_resume) from [<c034b5a4>] (usb_autopm_get_interface+0x18/0x5c)
|[<c034b5a4>] (usb_autopm_get_interface) from [<c03438b8>] (hub_thread+0x10c/0x115c)
|[<c03438b8>] (hub_thread) from [<c005a70c>] (kthread+0xbc/0xd8)
|---[ end trace 036aa5fe78203142 ]---
|hub 1-0:1.0: activate --> -16
|hub 2-0:1.0: activate --> -16
The reason for this backtrace is the attempt of the USB code to resume
the HUB twice and thus enqueue the status URB twice.
Alan Stern was a great help by explaining how the USB code supposed to
work and what is most likely the problem. The root problem is that after
resume the musb runtime-suspend state remains RPM_SUSPENDED.
According to git log it RPM was added for the omap2430 platform. If I
understand it correct the omap2430 invokes a get on musb once a cable is
connected and a put once the cable is gone. In between the device could
go auto-idle/off. Not sure what happens when the device goes into suspend
but then I guess it was gadget only.
On DSPS I see only a get in probe and put in remove function. This would
forbid RPM from working but then the devices enterns suspended state
anyway :)
To get rid of this warning, I set the device state to RPM_ACTIVE which
the expected state.
Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: <stable@vger.kernel.org>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Replace usb_gadget_driver's disconnect with udc-core's reset notifier at
bus reset handler.
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Peter Chen <peter.chen@freescale.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Attaching a keyboard, using it as a wakeup via
|for f in $(find /sys/devices/ocp.3/47400000.usb -name wakeup)
|do
| echo enabled > $f
|done
going into standby
| echo standby > /sys/power/state
and now a wake up by a pressing a key.
What happens is that the system wakes up but the USB device is dead. The
USB stack tries to send a few control URBs but nothing comes back.
Eventually it gaves up and the device remains dead:
|[ 632.559678] PM: Wakeup source USB1_PHY
|[ 632.581074] PM: noirq resume of devices complete after 21.261 msecs
|[ 632.607521] PM: early resume of devices complete after 10.360 msecs
|[ 632.616854] net eth2: initializing cpsw version 1.12 (0)
|[ 632.704126] net eth2: phy found : id is : 0x4dd074
|[ 636.704048] libphy: 4a101000.mdio:00 - Link is Up - 1000/Full
|[ 638.444620] usb 1-1: reset low-speed USB device number 2 using musb-hdrc
|[ 653.713435] usb 1-1: device descriptor read/64, error -110
|[ 669.093435] usb 1-1: device descriptor read/64, error -110
|[ 669.473424] usb 1-1: reset low-speed USB device number 2 using musb-hdrc
|[ 684.743436] usb 1-1: device descriptor read/64, error -110
|[ 690.065097] PM: resume of devices complete after 57450.744 msecs
|[ 690.076601] PM: Finishing wakeup.
|[ 690.076627] Restarting tasks ...
It seems that since we got woken up via MUSB_INTR_RESUME the
musb_host_finish_resume() callback is executed before the
resume-callbacks of the PHY and glue layer are invoked. If I delay it
until the glue layer resumed then I don't see this problem.
I also move musb_host_resume_root_hub() into that callback since I don't
see any reason in doing anything resume-link if there are still pieces
not restored.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
The am335x-evmsk support two kinds of suspend:
- standby
the USB device remains powered while the system goes into suspend
- mem
the USB device becomes powerless while the system goes into suspend.
In the "standby" case the device resumes quickly. In the "mem" case the
system hangs for a few seconds. It seems to me that the USB-device has
no address (it was disconnected) and the USB stack thinks that it is
fully operational and GetPortStatus returns the status from before the
suspend so it is not a big help here.
This adds a check in the resume path to see if the device mode (A or B)
and the speed is the same. If the device went missing between
suspend/resume (VBUS went down) then MUSB seems to go into B mode and
HS/FS bits are cleared. In that case we clear the port1_status bits and
assume a disconnect. Once the stack learns this it does a "logical
disconnect" and removes the USB-device quickly. Should the device remain
connected during the suspend then MUSB will receives a "CONNECT" interrupt.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Before using the PHY framework instead of the USB PHY one, we need to
move the OTG state into another place, since it won't be available when
USB PHY isn't used. This patch moves the OTG state into the OTG
structure, and makes all the needed modifications in the drivers
using the OTG state.
[ balbi@ti.com : fix build regressions with phy-tahvo.c, musb_dsps.c,
phy-isp1301-omap, and chipidea's debug.c ]
Acked-by: Kishon Vijay Abraham I <kishon@ti.com>
Acked-by: Peter Chen <peter.chen@freescale.com>
Signed-off-by: Antoine Tenart <antoine.tenart@free-electrons.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
In commit 0ec8fd70fb ("USB: musb: fix possible panic while resuming")
musb_resume() became musb_resume_early() in order to enable the clocks
early on resume. This piece of the resume code was removed later in
commit 034917612 ("usb: musb: move clock handling to glue layer").
In between the function was renamed from musb_resume_early() to
musb_resume_noirq() by commit commit 48fea9659e ("USB: Rework musb
suspend()/resume_early()").
Now I see that first musb_core is resumed followed by phy and glue
layer and I ask myself is this really what we intend to do? This kind
of revoked the purpose of the first commit (0ec8fd70fb).
Because of this and because it looks wrong to resume (core) before the
glue layer I push it to the ->resume callback.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Sanity check on resource happening with devm_ioremap_resource().
Signed-off-by: Varka Bhadram <varkab@cdac.in>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Sanity check on resource happening with devm_ioremap_resource().
Signed-off-by: Varka Bhadram <varkab@cdac.in>
Signed-off-by: Felipe Balbi <balbi@ti.com>
The OMAP2+ MUSB glue layer still uses a bare number for the DEVCTL.B-Device bit
in one place, while there's #define MUSB_DEVCTL_BDEVICE for that.
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
now that no UDC driver relies on the extra
'driver' argument to ->udc_stop(), we can
safely remove it.
This commit is based on previous work by
Robert Baldyga <r.baldyga@samsung.com> which
can be found at [1]; however that patch turned
out to have a high probability of regressing
many UDC drivers because of a blind search & replace
s/driver/$udc->driver/ which caused the 'driver'
argument to stop_activity() to be a valid non-NULL
pointer when it should be NULL, thus causing UDCs
to mistakenly call gadget driver's ->disconnect()
callback.
[1] http://markmail.org/message/x5zneg4xea4zntab
Acked-by: Peter Chen <peter.chen@freescale.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
now that we provide generic register/unregister
debugging messages from udc-core, we can remove
the same messages from this driver.
Signed-off-by: Felipe Balbi <balbi@ti.com>
future patches will remove the extra 'driver'
argument to ->udc_stop(), in order to do that,
we must make sure that our UDC does not rely
on it first.
Signed-off-by: Felipe Balbi <balbi@ti.com>
The drivers should use dmaengine_terminate_all() or dmaengine_slave_config()
API instead of accessing the device_control which will be deprecated soon
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
The memory subsystem has already had similar message for it.
Signed-off-by: Peter Chen <peter.chen@freescale.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
The memory subsystem has already had similar message for it.
Signed-off-by: Peter Chen <peter.chen@freescale.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
The memory subsystem has already had similar message for it.
Signed-off-by: Peter Chen <peter.chen@freescale.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
The memory subsystem has already had similar message for it.
Signed-off-by: Peter Chen <peter.chen@freescale.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
The memory subsystem has already had similar message for it.
Signed-off-by: Peter Chen <peter.chen@freescale.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
The memory subsystem has already had similar message for it.
Signed-off-by: Peter Chen <peter.chen@freescale.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
So testing managed to configure musb in DMA mode but not load the
matching cppi41 driver for DMA. This results in
|musb-hdrc musb-hdrc.0.auto: Failed to request rx1.
|musb-hdrc musb-hdrc.0.auto: musb_init_controller failed with status -517
|platform musb-hdrc.0.auto: Driver musb-hdrc requests probe deferral
which is "okay". Once the driver is loaded we re-try probing and
everyone is happy. Until then if you try suspend say
echo mem > /sys/power/state
then you go boom
|Unable to handle kernel NULL pointer dereference at virtual address 000003a4
|pgd = cf50c000
|[000003a4] *pgd=8f6a3831, *pte=00000000, *ppte=00000000
|Internal error: Oops: 17 [#1] ARM
|PC is at dsps_suspend+0x18/0x9c [musb_dsps]
|LR is at dsps_suspend+0x18/0x9c [musb_dsps]
|pc : [<bf08e268>] lr : [<bf08e268>] psr: a0000013
|sp : cbd97e00 ip : c0af4394 fp : 00000000
|r10: c0831d90 r9 : 00000002 r8 : cf6da410
|r7 : c03ba4dc r6 : bf08f224 r5 : 00000000 r4 : cbc5fcd0
|r3 : bf08e250 r2 : bf08f264 r1 : cf6da410 r0 : 00000000
|[<bf08e268>] (dsps_suspend [musb_dsps]) from [<c03ba508>] (platform_pm_suspend+0x2c/0x54)
|Code: e1a04000 e9900041 e2800010 eb4caa8e (e59053a4)
because platform_get_drvdata(glue->musb) returns a NULL pointer as long as the
device is not fully probed.
Tested-by: George Cherian <george.cherian@ti.com>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Commit 468bcc2a2c ("usb: musb: dsps: kill OTG timer on suspend") stopped
the timer in suspend path but forgot the re-enable it in the resume
path. This patch fixes the behaviour.
Cc: <stable@vger.kernel.org> # v3.14+
Fixes 468bcc2a2c "usb: musb: dsps: kill OTG timer on suspend"
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
commit c58d80f52 ("usb: musb: Ensure that cppi41 timer gets armed on
premature DMA TX irq") fixed hrtimer scheduling bug. There is one left
which does not trigger that often.
The following scenario is still possible:
lock(&x->lock);
hrtimer_start(&x->t);
unlock(&x->lock);
expires:
t->function();
lock(&x->lock);
lock(&x->lock); if (!hrtimer_queued(&x->t))
hrtimer_start(&x->t);
unlock(&x->lock);
if (!list_empty(x->early_tx_list))
ret = HRTIMER_RESTART;
-> hrtimer_forward_now(...)
} else
ret = HRTIMER_NORESTART;
unlock(&x->lock);
and the timer callback returns HRTIMER_RESTART for an armed timer. This
is wrong and we run into the BUG_ON() in __run_hrtimer().
This can happens on SMP or PREEMPT-RT.
The patch fixes the problem by only starting the timer if the timer is
not yet queued.
Cc: stable@vger.kernel.org
Reported-by: Torben Hohn <torbenh@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
[bigeasy: collected information and created a patch + description based
on it]
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Use the recently introduced usb_gadget_giveback_request() in favor of
direct invocation of the completion routine.
All places in drivers/usb/ matching "[-.]complete(" were replaced with a
call to usb_gadget_giveback_request(). This was compile-tested with all
ARM drivers enabled and runtime-tested for musb.
Signed-off-by: Michal Sojka <sojka@merica.cz>
Acked-by: Felipe Balbi <balbi@ti.com>
Tested-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
USB hub has started to use a workqueue instead of kthread. Let's update
the documentation and comments here and there.
This patch mostly just replaces "khubd" with "hub_wq". There are only few
exceptions where the whole sentence was updated. These more complicated
changes can be found in the following files:
Documentation/usb/hotplug.txt
drivers/net/usb/usbnet.c
drivers/usb/core/hcd.c
drivers/usb/host/ohci-hcd.c
drivers/usb/host/xhci.c
Signed-off-by: Petr Mladek <pmladek@suse.cz>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Fixed typos in comments of various drivers/usb files
Signed-off-by: Mickael Maison <mickael.maison@gmail.com>
Acked-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
if we don't make sure to kill the timer, it could
expire after we have already gated our clocks.
That will trigger a Data Abort exception because
we would try to access register while clock is gated.
Fix that bug.
Cc: <stable@vger.kernel.org> # v3.14+
Fixes 869c597 (usb: musb: dsps: add support for suspend and resume)
Tested-by: Dave Gerlach <d-gerlach@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1
iQEcBAABAgAGBQJUDOW+AAoJEHm+PkMAQRiGOXYH/00TPKm8PdM5cXXG2YYYv9eT
W99K7KD2i0/qiVtlGgjjvB7fO3K0HcZusTd2jmVd8IWntXvauq7Zpw5YZkjwu4KX
Y1HCwwCd2aw0FoqgrJhNP3+j5Cr1BD/HLtbffjCe+A3tppOIis4Bwt2wJOoYlXpS
hU9Jxxc4lcRo8YKbffouDo7PIneWeJy8N+WGpUR5BfJIEK0ZZtCUqn3/3WLX4FYu
fE6uiF/bACTpKXU/mo4dDbhZp439H/QdwQc9B0F8+8CBDMXKaNHrPV7kN36T2SWa
fD4boikTsi/yh9Ks1fvHbvNq2N0ihoMnja+vLRyvjAcAQv2fKG3OZtYgFWSdghU=
=Xknd
-----END PGP SIGNATURE-----
Merge tag 'v3.17-rc4' into next
Merge Linux 3.17-rc4 here so we have all the latest
fixes on next too. This also cleans up a few conflicts
when applying patches.
Signed-off-by: Felipe Balbi <balbi@ti.com>
Conflicts:
drivers/usb/gadget/Makefile
drivers/usb/gadget/function/Makefile
drivers/usb/gadget/legacy/Makefile
drivers/usb/phy/phy-samsung-usb.h
Intensive tests with USB audio devices connected to a musb host port
have shown reproducible pops and clicks in both the playback and the
capture stream.
These are related to how the early_tx hrtimer is set up, and it turns
out they can be fixed by reducing the timer's slack value from 40 to
25 us. Also, when the callback is ran without taking action, it should
be rescheduled 20 us later instead of 50 us.
Reported-and-tested-by: Sven Neumann <neumann@teufel.de>
Signed-off-by: Daniel Mack <daniel@zonque.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>
CPPI TX does not transmit ZLP for TX transfers which
- transfer size is multiple of EP packet size,
- and URB_ZERO_PACKET is set in urb->transfer_flags.
The fix is transmitting the ZLP using PIO mode after the CPPI TX is
done.
Validated using the following usbtest write case in MUSB host mode.
# testusb -t1 -c1
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
The prefix suggests the number should be printed in hex, so use
the %x specifier to do that.
Found by using regex suggested by Joe Perches.
Signed-off-by: Hans Wennborg <hans@hanshq.net>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Surprisingly enough, while a big set of patches, the majority is
composed of cleanups (using devm_*, fixing sparse errors, moving
code around, adding const, etc).
The highlights are addition of new support for PLX USB338x devices,
and support for USB 2.0-only configurations of the DWC3 IP core.
Signed-of-by: Felipe Balbi <balbi@ti.com>
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1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=aJY4
-----END PGP SIGNATURE-----
Merge tag 'usb-for-v3.17' of git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb into usb-next
Felipe writes:
usb: patches for v3.17 merge window
Surprisingly enough, while a big set of patches, the majority is
composed of cleanups (using devm_*, fixing sparse errors, moving
code around, adding const, etc).
The highlights are addition of new support for PLX USB338x devices,
and support for USB 2.0-only configurations of the DWC3 IP core.
Signed-of-by: Felipe Balbi <balbi@ti.com>
Add sw_babble_control() logic to differentiate between transient
babble and real babble condition. Also add the SW babble control
register definitions.
Babble control register logic is implemented in the latest
revision of AM335x.
Find whether we are running on newer silicon. The babble control
register reads 0x4 by default in newer silicon as opposed to 0
in old versions of AM335x. Based on this enable the sw babble
control logic.
Signed-off-by: George Cherian <george.cherian@ti.com>
Tested-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Currently musb_platform_reset() is only used by dsps.
In case of BABBLE interrupt for other platforms the musb_platform_reset()
is a NOP. In such situations no need to re-initialize the endpoints.
Also in the latest silicon revision of AM335x, we do have a babble recovery
mechanism without resetting the IP block. In preperation to add that support
its better to have a rest_done return for musb_platform_reset().
Signed-off-by: George Cherian <george.cherian@ti.com>
Tested-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
During babble condition both first disconnect of devices are
initiated. Make sure MUSB controller is reset and re-initialized
after all disconnects.
To acheive this schedule a delayed work for babble recovery.
While at that convert udelay to usleep_range.
Refer Documentation/timers/timers-howto.txt
Signed-off-by: George Cherian <george.cherian@ti.com>
Tested-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
BABBLE and RESET share the same interrupt. The interrupt
is considered to be RESET if MUSB is in peripheral mode and
as a BABBLE if MUSB is in HOST mode.
Handle babble condition iff MUSB is in HOST mode.
Signed-off-by: George Cherian <george.cherian@ti.com>
Tested-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Following the name change of the NOP transceiver driver in commit
4525bee (usb: phy: rename usb_nop_xceiv to usb_phy_generic), the
transceiver driver was no longer operable under its old name.
Register the transceiver driver before calling usb_get_phy() to make
sure we are noticed by an error message if it is not available.
Signed-off-by: Apelete Seketeli <apelete@seketeli.net>
Signed-off-by: Felipe Balbi <balbi@ti.com>
The musb/cppi41 code installs a hrtimer to work around DMA completion
interrupts that have fired too early on AM335x hardware. This timer
is currently programmed to first fire 140 microseconds after the DMA
completion callback. According to the commit which introduced it
(a655f481d8, "usb: musb: musb_cppi41: handle pre-mature TX complete
interrupt"), that value is is considered a 'rule of thumb' that worked
well with the test case described in the commit log.
Test show, however, that for USB audio devices and much smaller packet
sizes, the timer has to fire earlier in order to correctly handle the audio
stream. The original test case had output transfer sizes of 1514 bytes, and
a delay of 140 microseconds. For audio devices with 24 bytes channel size, 3
microseconds seem to work well.
Hence, let's assume that the time it takes to clear the bit correlates with
the number of bytes transferred. The referenced commit log mentions such a
suspicion as well. Let the timer fire in cppi41_channel->total_len/10
microseconds to correctly handle both cases.
Also, shorten the interval in which the timer fires again in case of
a non-empty early_tx list.
With these changes in place, both FS and HS audio devices appear to work
well on AM335x hardware.
Signed-off-by: Daniel Mack <zonque@gmail.com>
Reported-by: Sebastian Reimers <sebastian.reimers@googlemail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This reverts commit 1af54b7a4.
The commit tried to address cases in which isochronous transfers are 'not
reliable', most probably in the tests conducted, polling for the
MUSB_TXCSR_TXPKTRDY bit in MUSB_TXCSR is done too late.
Hence, it installs a work struct which basically busy-polls for the bit in a
rather agressive way by rescheduling the work if the FIFO is not empty. With
USB audio devices, tests have shown that it takes approximately 100
iterations of the asynchronous worker until the FIFO signals completion,
which leads to 100% CPU loads when streaming audio.
The issue the patch tried to address can be handled differently, which is
what the next patch does.
Signed-off-by: Daniel Mack <zonque@gmail.com>
Reported-by: Sebastian Reimers <sebastian.reimers@googlemail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Before accessing any of an endpoint's CSR registers, make sure the
correct endpoint is selected. Otherwise, data read from or written to
the registers is likely to affect the wrong endpoint as long as the
connected device has more than one endpoint.
This, of course, leads to all sorts of strange effects such as stream
starvation and driver internal state machine confusion due to spurious
interrupts.
Signed-off-by: Daniel Mack <zonque@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
The musb/cppi41 glue layer is capable of handling transactions that span
over more than one USB packet by reloading the DMA descriptors
partially. An urb is considered completed when either its transfer
buffer has been filled entirely (actual_length ==
transfer_buffer_length) or if a packet in the stream has less bytes than
the endpoint's wMaxPacketSize.
Once one of the above conditions is met, musb_dma_completion() is called
from cppi41_trans_done(). However, the final decision whether or not to
return the urb to its owner is made by the core and its determination of
the variable 'done' in musb_host_rx(). This code has currently no way of
knowing what the size of the last packet was, and whether or not to
give back the urb due to a short read.
Fix this by introducing a new boolean flag in 'struct dma_channel', and
set it from musb_cppi41.c. If set, it will make the core do what the
DMA layer decided and complete the urb.
Signed-off-by: Daniel Mack <zonque@gmail.com>
Acked-by: George Cherian <george.cherian@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
The datasheet says that MUSB_TXCSR_FLUSHFIFO is only valid when
MUSB_TXCSR_TXPKTRDY is set as well.
With this patch applied, the warning in this function does no longer
kick in when an USB soundcard is unplugged while the stream is active.
Signed-off-by: Daniel Mack <zonque@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
On AM33xx platforms, unplugging a device in the middle of an active
transfer leads to a drop of MUSB_DEVCTL_HM in MUSB_DEVCTL before the
system is informed about a disconnect. This consequently makes the musb
core call the gadget code to handle the interrupt request, which then
crashes the kernel because the relevant pointers haven't been set up
for gadget mode.
To fix this, use is_host_active() rather than (devctl & MUSB_DEVCTL_HM)
in musb_interrupt() and musb_dma_completion() to detect whether the
controller is in host or peripheral mode. This information is provided
by the driver logic and does not rely on register contents.
Signed-off-by: Daniel Mack <zonque@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Just a little cleanup that removes unnecessary casts.
Signed-off-by: Daniel Mack <zonque@gmail.com>
Acked-by: George Cherian <george.cherian@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
commit 943c13971c "usb: musb: dsps: implement ->set_mode()"
should have made it possible to use the driver with boards that have
the USBID pin unconnected. This doesn't actually work, since the
driver uses the wrong base address to access the mode register.
Furthermore it uses different base addresses in different places to
access the same register (phy_utmi).
Signed-off-by: Lothar Waßmann <LW@KARO-electronics.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
For DSPS platform usb_phy_vbus(_off/_on) are NOPs.
So during musb_platform_reset() call usb_phy(_shutdown/_init)
Signed-off-by: George Cherian <george.cherian@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
There is a risk that the variable will be used without being initialized.
This was largely found by using a static code analysis program called cppcheck.
Signed-off-by: Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This patch moves data allocated using kzalloc to managed data allocated
using devm_kzalloc and cleans now unnecessary kfrees in probe and remove
functions. Also, a label is done away with and err2 and err3 renamed.
The following Coccinelle semantic patch was used for making the change:
@platform@
identifier p, probefn, removefn;
@@
struct platform_driver p = {
.probe = probefn,
.remove = removefn,
};
@prb@
identifier platform.probefn, pdev;
expression e, e1, e2;
@@
probefn(struct platform_device *pdev, ...) {
<+...
- e = kzalloc(e1, e2)
+ e = devm_kzalloc(&pdev->dev, e1, e2)
...
?-kfree(e);
...+>
}
@rem depends on prb@
identifier platform.removefn;
expression e;
@@
removefn(...) {
<...
- kfree(e);
...>
}
Signed-off-by: Himangi Saraogi <himangi774@gmail.com>
Acked-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This patch moves data allocated using kzalloc to managed data allocated
using devm_kzalloc and cleans now unnecessary kfrees in probe and remove
functions. Also, the unnecesary labels are removed and linux/device.h is
added to make sure the devm_*() routine declarations are unambiguously
available.
The following Coccinelle semantic patch was used for making the change:
@platform@
identifier p, probefn, removefn;
@@
struct platform_driver p = {
.probe = probefn,
.remove = removefn,
};
@prb@
identifier platform.probefn, pdev;
expression e, e1, e2;
@@
probefn(struct platform_device *pdev, ...) {
<+...
- e = kzalloc(e1, e2)
+ e = devm_kzalloc(&pdev->dev, e1, e2)
...
?-kfree(e);
...+>
}
@rem depends on prb@
identifier platform.removefn;
expression e;
@@
removefn(...) {
<...
- kfree(e);
...>
}
Signed-off-by: Himangi Saraogi <himangi774@gmail.com>
Acked-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This patch moves data allocated using kzalloc to managed data allocated
using devm_kzalloc and cleans now unnecessary kfrees in probe and remove
functions. Also, a label is done away with and clk_get is replaced by it
corresponding devm version and the clk_puts are done away with. The
labels are renamed to make them ordered.
The following Coccinelle semantic patch was used for making the change:
@platform@
identifier p, probefn, removefn;
@@
struct platform_driver p = {
.probe = probefn,
.remove = removefn,
};
@prb@
identifier platform.probefn, pdev;
expression e, e1, e2;
@@
probefn(struct platform_device *pdev, ...) {
<+...
- e = kzalloc(e1, e2)
+ e = devm_kzalloc(&pdev->dev, e1, e2)
...
?-kfree(e);
...+>
}
@rem depends on prb@
identifier platform.removefn;
expression e;
@@
removefn(...) {
<...
- kfree(e);
...>
}
Signed-off-by: Himangi Saraogi <himangi774@gmail.com>
Acked-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This patch introduces the use of managed interfaces for clk_get and
kzalloc and removes the corresponding free function calls in the probe
and remove functions.
Signed-off-by: Himangi Saraogi <himangi774@gmail.com>
Acked-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: Felipe Balbi <balbi@ti.com>
There is no reason for the register accessor functions not to adhere
to the CodingStyle rules.
Signed-off-by: Lothar Waßmann <LW@KARO-electronics.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Some TI chips raise the DMA complete interrupt before the actual
transfer has been completed. The code tries to busy wait for a few
microseconds and if that fails it arms an hrtimer to recheck. So far
so good, but that has the following issue:
CPU 0 CPU1
start_next_transfer(RQ1);
DMA interrupt
if (premature_irq(RQ1))
if (!hrtimer_active(timer))
hrtimer_start(timer);
hrtimer expires
timer->state = CALLBACK_RUNNING;
timer->fn()
cppi41_recheck_tx_req()
complete_request(RQ1);
if (requests_pending())
start_next_transfer(RQ2);
DMA interrupt
if (premature_irq(RQ2))
if (!hrtimer_active(timer))
hrtimer_start(timer);
timer->state = INACTIVE;
The premature interrupt of request2 on CPU1 does not arm the timer and
therefor the request completion never happens because it checks for
!hrtimer_active(). hrtimer_active() evaluates:
timer->state != HRTIMER_STATE_INACTIVE
which of course evaluates to true in the above case as timer->state is
CALLBACK_RUNNING.
That's clearly documented:
* A timer is active, when it is enqueued into the rbtree or the
* callback function is running or it's in the state of being migrated
* to another cpu.
But that's not what the code wants to check. The code wants to check
whether the timer is queued, i.e. whether its armed and waiting for
expiry.
We have a helper function for this: hrtimer_is_queued(). This
evaluates:
timer->state & HRTIMER_STATE_QUEUED
So in the above case this evaluates to false and therefor forces the
DMA interrupt on CPU1 to call hrtimer_start().
Use hrtimer_is_queued() instead of hrtimer_active() and evrything is
good.
Reported-by: Torben Hohn <torbenh@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: stable@vger.kernel.org
Signed-off-by: Felipe Balbi <balbi@ti.com>
At probe time, the musb_am335x driver register its childs by
calling of_platform_populate(), which registers all childs in
the devicetree hierarchy recursively.
On the other side, the driver's remove() function uses of_device_unregister()
to remove each child of musb_am335x's.
However, when musb_dsps is loaded, its devices are attached to the musb_am335x
device as musb_am335x childs. Hence, musb_am335x remove() will attempt to
unregister the devices registered by musb_dsps, which produces a kernel panic.
In other words, the childs in the "struct device" hierarchy are not the same
as the childs in the "devicetree" hierarchy.
Ideally, we should enforce the removal of the devices registered by
musb_am335x *only*, instead of all its child devices. However, because of the
recursive nature of of_platform_populate, this doesn't seem possible.
Therefore, as the only solution at hand, this commit disables musb_am335x
driver removal capability, preventing it from being ever removed. This was
originally suggested by Sebastian Siewior:
https://www.mail-archive.com/linux-omap@vger.kernel.org/msg104946.html
And for reference, here's the panic upon module removal:
musb-hdrc musb-hdrc.0.auto: remove, state 4
usb usb1: USB disconnect, device number 1
musb-hdrc musb-hdrc.0.auto: USB bus 1 deregistered
Unable to handle kernel NULL pointer dereference at virtual address 0000008c
pgd = de11c000
[0000008c] *pgd=9e174831, *pte=00000000, *ppte=00000000
Internal error: Oops: 17 [#1] ARM
Modules linked in: musb_am335x(-) musb_dsps musb_hdrc usbcore usb_common
CPU: 0 PID: 623 Comm: modprobe Not tainted 3.15.0-rc4-00001-g24efd13 #69
task: de1b7500 ti: de122000 task.ti: de122000
PC is at am335x_shutdown+0x10/0x28
LR is at am335x_shutdown+0xc/0x28
pc : [<c0327798>] lr : [<c0327794>] psr: a0000013
sp : de123df8 ip : 00000004 fp : 00028f00
r10: 00000000 r9 : de122000 r8 : c000e6c4
r7 : de0e3c10 r6 : de0e3800 r5 : de624010 r4 : de1ec750
r3 : de0e3810 r2 : 00000000 r1 : 00000001 r0 : 00000000
Flags: NzCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment user
Control: 10c5387d Table: 9e11c019 DAC: 00000015
Process modprobe (pid: 623, stack limit = 0xde122240)
Stack: (0xde123df8 to 0xde124000)
3de0: de0e3810 bf054488
3e00: bf05444c de624010 60000013 bf043650 000012fc de624010 de0e3810 bf043a20
3e20: de0e3810 bf04b240 c0635b88 c02ca37c c02ca364 c02c8db0 de1b7500 de0e3844
3e40: de0e3810 c02c8e28 c0635b88 de02824c de0e3810 c02c884c de0e3800 de0e3810
3e60: de0e3818 c02c5b20 bf05417c de0e3800 de0e3800 c0635b88 de0f2410 c02ca838
3e80: bf05417c de0e3800 bf055438 c02ca8cc de0e3c10 bf054194 de0e3c10 c02ca37c
3ea0: c02ca364 c02c8db0 de1b7500 de0e3c44 de0e3c10 c02c8e28 c0635b88 de02824c
3ec0: de0e3c10 c02c884c de0e3c10 de0e3c10 de0e3c18 c02c5b20 de0e3c10 de0e3c10
3ee0: 00000000 bf059000 a0000013 c02c5bc0 00000000 bf05900c de0e3c10 c02c5c48
3f00: de0dd0c0 de1ec970 de0f2410 bf05929c de0f2444 bf05902c de0f2410 c02ca37c
3f20: c02ca364 c02c8db0 bf05929c de0f2410 bf05929c c02c94c8 bf05929c 00000000
3f40: 00000800 c02c8ab4 bf0592e0 c007fc40 c00dd820 6273756d 336d615f 00783533
3f60: c064a0ac de1b7500 de122000 de1b7500 c000e590 00000001 c000e6c4 c0060160
3f80: 00028e70 00028e70 00028ea4 00000081 60000010 00028e70 00028e70 00028ea4
3fa0: 00000081 c000e500 00028e70 00028e70 00028ea4 00000800 becb59f8 00027608
3fc0: 00028e70 00028e70 00028ea4 00000081 00000001 00000001 00000000 00028f00
3fe0: b6e6b6f0 becb59d4 000160e8 b6e6b6fc 60000010 00028ea4 00000000 00000000
[<c0327798>] (am335x_shutdown) from [<bf054488>] (dsps_musb_exit+0x3c/0x4c [musb_dsps])
[<bf054488>] (dsps_musb_exit [musb_dsps]) from [<bf043650>] (musb_shutdown+0x80/0x90 [musb_hdrc])
[<bf043650>] (musb_shutdown [musb_hdrc]) from [<bf043a20>] (musb_remove+0x24/0x68 [musb_hdrc])
[<bf043a20>] (musb_remove [musb_hdrc]) from [<c02ca37c>] (platform_drv_remove+0x18/0x1c)
[<c02ca37c>] (platform_drv_remove) from [<c02c8db0>] (__device_release_driver+0x70/0xc8)
[<c02c8db0>] (__device_release_driver) from [<c02c8e28>] (device_release_driver+0x20/0x2c)
[<c02c8e28>] (device_release_driver) from [<c02c884c>] (bus_remove_device+0xdc/0x10c)
[<c02c884c>] (bus_remove_device) from [<c02c5b20>] (device_del+0x104/0x198)
[<c02c5b20>] (device_del) from [<c02ca838>] (platform_device_del+0x14/0x9c)
[<c02ca838>] (platform_device_del) from [<c02ca8cc>] (platform_device_unregister+0xc/0x20)
[<c02ca8cc>] (platform_device_unregister) from [<bf054194>] (dsps_remove+0x18/0x38 [musb_dsps])
[<bf054194>] (dsps_remove [musb_dsps]) from [<c02ca37c>] (platform_drv_remove+0x18/0x1c)
[<c02ca37c>] (platform_drv_remove) from [<c02c8db0>] (__device_release_driver+0x70/0xc8)
[<c02c8db0>] (__device_release_driver) from [<c02c8e28>] (device_release_driver+0x20/0x2c)
[<c02c8e28>] (device_release_driver) from [<c02c884c>] (bus_remove_device+0xdc/0x10c)
[<c02c884c>] (bus_remove_device) from [<c02c5b20>] (device_del+0x104/0x198)
[<c02c5b20>] (device_del) from [<c02c5bc0>] (device_unregister+0xc/0x20)
[<c02c5bc0>] (device_unregister) from [<bf05900c>] (of_remove_populated_child+0xc/0x14 [musb_am335x])
[<bf05900c>] (of_remove_populated_child [musb_am335x]) from [<c02c5c48>] (device_for_each_child+0x44/0x70)
[<c02c5c48>] (device_for_each_child) from [<bf05902c>] (am335x_child_remove+0x18/0x30 [musb_am335x])
[<bf05902c>] (am335x_child_remove [musb_am335x]) from [<c02ca37c>] (platform_drv_remove+0x18/0x1c)
[<c02ca37c>] (platform_drv_remove) from [<c02c8db0>] (__device_release_driver+0x70/0xc8)
[<c02c8db0>] (__device_release_driver) from [<c02c94c8>] (driver_detach+0xb4/0xb8)
[<c02c94c8>] (driver_detach) from [<c02c8ab4>] (bus_remove_driver+0x4c/0xa0)
[<c02c8ab4>] (bus_remove_driver) from [<c007fc40>] (SyS_delete_module+0x128/0x1cc)
[<c007fc40>] (SyS_delete_module) from [<c000e500>] (ret_fast_syscall+0x0/0x48)
Fixes: 97238b35d5 ("usb: musb: dsps: use proper child nodes")
Cc: <stable@vger.kernel.org> # v3.12+
Acked-by: George Cherian <george.cherian@ti.com>
Signed-off-by: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
Signed-off-by: Felipe Balbi <balbi@ti.com>
BABBLE and RESET share the same interrupt. The interrupt
is considered to be RESET if MUSB is in peripheral mode and
as a BABBLE if MUSB is in HOST mode.
Handle babble condition iff MUSB is in HOST mode.
Fixes: ca88fc2ef0 (usb: musb: add a work_struct to recover from babble errors)
Tested-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: George Cherian <george.cherian@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
There is a regression in the upcoming v3.16-rc1, that is caused
by a problem that has been around for a while but now finally
hangs the system. The bootcrawl looks like this:
pinctrl-nomadik soc:pinctrl: pin GPIO256_AF28 already
requested by a03e0000.usb_per5; cannot claim for musb-hdrc.0.auto
pinctrl-nomadik soc:pinctrl: pin-256 (musb-hdrc.0.auto) status -22
pinctrl-nomadik soc:pinctrl: could not request pin 256
(GPIO256_AF28) from group usb_a_1 on device pinctrl-nomadik
musb-hdrc musb-hdrc.0.auto: Error applying setting, reverse
things back
HS USB OTG: no transceiver configured
musb-hdrc musb-hdrc.0.auto: musb_init_controller failed
with status -517
platform musb-hdrc.0.auto: Driver musb-hdrc requests
probe deferral
(...)
The ux500 MUSB driver propagates the OF node to the dynamically
created musb-hdrc device, which is incorrect as it makes the OF
core believe there are two devices spun from the very same
DT node, which confuses other parts of the device core, notably
the pin control subsystem, which will try to apply all the pin
control settings also to the HDRC device as it gets
instantiated. (The OMAP2430 for example, does not set the
of_node member.)
Cc: <stable@vger.kernel.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Acked-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Not a lot here during this merge window. Mostly we just have
the usual miscellaneous patches (removal of unnecessary prints,
proper dependencies being added to Kconfig, build warning fixes,
new device ID, etc.
Other than those, the only important new features are the
new support for OS Strings which should help Linux Gadget
Drivers behave better under MS Windows. Also Babble Recovery
implementation for MUSB on AM335x. Lastly, we also have
ARCH_QCOM PHY support though phy-msm.
Signed-of-by: Felipe Balbi <balbi@ti.com>
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1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=Q1jA
-----END PGP SIGNATURE-----
Merge tag 'usb-for-v3.16' of git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb into usb-next
Felipe writes:
usb: patches for v3.16 merge window
Not a lot here during this merge window. Mostly we just have
the usual miscellaneous patches (removal of unnecessary prints,
proper dependencies being added to Kconfig, build warning fixes,
new device ID, etc.
Other than those, the only important new features are the
new support for OS Strings which should help Linux Gadget
Drivers behave better under MS Windows. Also Babble Recovery
implementation for MUSB on AM335x. Lastly, we also have
ARCH_QCOM PHY support though phy-msm.
Signed-of-by: Felipe Balbi <balbi@ti.com>
Conflicts:
drivers/usb/phy/phy-mv-u3d-usb.c
The value of the revision is stored in musb->tusb_revision,
so don't re-read it every time.
Exporting tusb_get_revision is not needed anymore,
so the dependency loop between tusb6010 and tusb6010_omap is resolved.
Signed-off-by: Matwey V. Kornilov <matwey@sai.msu.ru>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Add field to store tusb6010 revision value. Read the revision at
the startup and store to the variable.
Signed-off-by: Matwey V. Kornilov <matwey@sai.msu.ru>
Signed-off-by: Felipe Balbi <balbi@ti.com>
The musb/omap2430.c bus glue driver calls usb_hcd_poll_rh_status,
which is only available if CONFIG_USB is also set, i.e. we
are building USB host mode and not just endpoint mode.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: linux-omap@vger.kernel.org
Signed-off-by: Felipe Balbi <balbi@ti.com>
A configuration with CONFIG_USB_MUSB_HDRC=y, CONFIG_USB_TUSB_OMAP_DMA=y
and CONFIG_USB_MUSB_TUSB6010=m causes a link failure because of the
dependency on the tusb_get_revision symbol:
(.text+0x154ce8): undefined reference to `tusb_get_revision'
This patch ensures that either MUSB_HDRC and MUSB_TUSB6010 are
both modules or both built-in, which are the valid configurations.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: linux-omap@vger.kernel.org
Signed-off-by: Felipe Balbi <balbi@ti.com>
musb_in_tusb() is always set to 0, because CONFIG_USB_TUSB6010 is never
set (it should have been CONFIG_USB_MUSB_TUSB6010). But musb_in_tusb()
is unused anyway, so remove a few lines of dead code.
Signed-off-by: Paul Bolle <pebolle@tiscali.nl>
Signed-off-by: Felipe Balbi <balbi@ti.com>
AM335x MUSB supports both PIO and DMA mode. When DMA mode is
selected users need to explicitly enable the DMA driver. To avoid the
extra configuration select the DMA driver if DMA mode is set for AM335x MUSB.
Signed-off-by: George Cherian <george.cherian@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Depending on PM is not enough, because only PM_RUNTIME could be
selected. Fixes:
drivers/usb/musb/musb_dsps.c:703:12: warning: 'dsps_suspend' defined but not used [-Wunused-function]
drivers/usb/musb/musb_dsps.c:721:12: warning: 'dsps_resume' defined but not used [-Wunused-function]
Signed-off-by: Wolfram Sang <wsa@sang-engineering.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
When the dsps isr sees a babble error, pass it down to the core for
fixup. Also, provide a .reset hook so the core can call us back.
A babble interrupt error occured when a USB mass storage device
("CHIPSBNK v3.3.9.1", 1e3d:2093) was disconnected from a AM33xx host.
Signed-off-by: Daniel Mack <zonque@gmail.com>
Reported-by: Thomas Mellenthin <mellenthin@teufel.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Handle BABBLE interrupt error conditions from a work struct handler.
This indirection is necessary as we can't be certain that the phy
functions don't sleep.
Platform layer implementation may pass a babble error down to the core
in order to handle it.
Signed-off-by: Daniel Mack <zonque@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Babble interrupts require us to reset the DSPS glue layer. In order to
handle all other recovery tasks independently, add a new hook for
platform-specific implementations of the actual reset.
Signed-off-by: Daniel Mack <zonque@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
it's now very easy to return a platform_device pointer
and have the caller pass it as argument when calling
usb_phy_generic_unregister().
Signed-off-by: Felipe Balbi <balbi@ti.com>
no functional changes, just renaming the function
in order to make it slightly clearer what it should
be used for, also matching the driver name.
Signed-off-by: Felipe Balbi <balbi@ti.com>
When the platform initialization fails due to missing resources, it will
return -EPROBE_DEFER after dsps_musb_init() has been called.
dsps_musb_init() calls dsps_musb_dbg_init() to allocate the debugfs
nodes. At a later point in time, the probe will be retried, and
dsps_musb_dbg_init() will be called again. debugfs_create_dir() will
fail this time, as the node already exists, and so the entire device
probe will fail with -ENOMEM.
Fix this by moving debugfs_remove_recursive() from dsps_remove() to the
plaform's exit function, so it will be cleanly torn down when the probe
fails. It also feels more natural this way, as .exit is the counterpart
to .init.
Signed-off-by: Daniel Mack <zonque@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
on early initialization we could fall into
a situation where the mailbox is called before
MUSB's clocks are running, in order to avoid
that, make sure mailbox is always wrapped with
pm_runtime calls.
Reported-by: Stefan Roese <sr@denx.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
commi 30a70b0 (usb: musb: fix obex in g_nokia.ko
causing kernel panic) removed phy_power_on()
and phy_power_off() calls from runtime PM callbacks
but it failed to note that the driver depended
on pm_runtime_get_sync() calls to power up the PHY,
thus leaving some platforms without any means to
have a working PHY.
Fix that by enabling the phy during omap2430_musb_init()
and killing it in omap2430_musb_exit().
Fixes: 30a70b0 (usb: musb: fix obex in g_nokia.ko causing kernel panic)
Cc: <stable@vger.kernel.org> # v3.14
Cc: Pali Rohár <pali.rohar@gmail.com>
Cc: Ivaylo Dimitrov <ivo.g.dimitrov.75@gmail.com>
Reported-by: Michael Scott <hashcode0f@gmail.com>
Tested-by: Michael Scott <hashcode0f@gmail.com>
Tested-by: Stefan Roese <sr@denx.de>
Reported-by: Rabin Vincent <rabin@rab.in>
Signed-off-by: Felipe Balbi <balbi@ti.com>
and a multi-purpose PHY in APM, all adapted to generic PHY framework.
Adapted USB3 PHY driver in OMAP to generic PHY driver and also used
the same driver for SATA in OMAP. It also includes miscellaneous cleanups
and fixes.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.11 (GNU/Linux)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=mpZ3
-----END PGP SIGNATURE-----
Merge tag 'for_3.15' of git://git.kernel.org/pub/scm/linux/kernel/git/kishon/linux-phy into usb-next
Kishon writes:
Add new PHY drivers for SATA and USB in exynos, for USB in sunxi,
and a multi-purpose PHY in APM, all adapted to generic PHY framework.
Adapted USB3 PHY driver in OMAP to generic PHY driver and also used
the same driver for SATA in OMAP. It also includes miscellaneous cleanups
and fixes.
Rename struct omap_control_usb to struct omap_control_phy since it can
be used to control PHY of USB, SATA and PCIE. Also move the driver and
include files under *phy* and made the corresponding changes in the users
of phy-omap-control.
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Roger Quadros <rogerq@ti.com>
Acked-by: Felipe Balbi <balbi@ti.com>
another substantial pull request with new features all over
the place.
dwc3 got a bit closer towards hibernation support with after
a few patches re-factoring code to be reused for hibernation.
Also in dwc3 two new workarounds for known silicon bugs have
been implemented, some randconfig build errors have been fixed,
and it was taught about the new generic phy layer.
MUSB on AM335x now supports isochronous transfers thanks to
George Cherian's work.
The atmel_usba driver got two crash fixes: one when no endpoint
was specified in DeviceTree data and another when stopping the UDC
in DEBUG builds.
Function FS got a much needed fix to ffs_epfile_io() which was
copying too much data to userspace in some cases.
The printer gadget got a fix for a possible deadlock and plugged
a memory leak.
Ethernet drivers now use NAPI for RX which gives improved throughput.
Other than that, the usual miscelaneous fixes, cleanups, and
the like.
Signed-of-by: Felipe Balbi <balbi@ti.com>
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1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=AAie
-----END PGP SIGNATURE-----
Merge tag 'usb-for-v3.15' of git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb into usb-next
Felipe writes:
usb: patches for v3.15
another substantial pull request with new features all over
the place.
dwc3 got a bit closer towards hibernation support with after
a few patches re-factoring code to be reused for hibernation.
Also in dwc3 two new workarounds for known silicon bugs have
been implemented, some randconfig build errors have been fixed,
and it was taught about the new generic phy layer.
MUSB on AM335x now supports isochronous transfers thanks to
George Cherian's work.
The atmel_usba driver got two crash fixes: one when no endpoint
was specified in DeviceTree data and another when stopping the UDC
in DEBUG builds.
Function FS got a much needed fix to ffs_epfile_io() which was
copying too much data to userspace in some cases.
The printer gadget got a fix for a possible deadlock and plugged
a memory leak.
Ethernet drivers now use NAPI for RX which gives improved throughput.
Other than that, the usual miscelaneous fixes, cleanups, and
the like.
Signed-of-by: Felipe Balbi <balbi@ti.com>
Reprogramming the DMA after tear down is initiated leads to warning.
This is mainly seen with ISOCH since we do a delayed completion for
ISOCH transfers. In ISOCH transfers dma_completion should not reprogram
if the channel tear down is initiated.
Signed-off-by: George Cherian <george.cherian@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
If NO_DMA=y:
drivers/built-in.o: In function `txstate':
musb_gadget.c:(.text+0x35955a): undefined reference to `dma_unmap_single'
musb_gadget.c:(.text+0x35957e): undefined reference to `dma_sync_single_for_cpu'
drivers/built-in.o: In function `musb_g_giveback':
(.text+0x359672): undefined reference to `dma_mapping_error'
drivers/built-in.o: In function `musb_g_giveback':
(.text+0x3596ba): undefined reference to `dma_unmap_single'
drivers/built-in.o: In function `musb_g_giveback':
(.text+0x3596e0): undefined reference to `dma_sync_single_for_cpu'
drivers/built-in.o: In function `rxstate':
musb_gadget.c:(.text+0x3599d0): undefined reference to `dma_unmap_single'
musb_gadget.c:(.text+0x3599f6): undefined reference to `dma_sync_single_for_cpu'
drivers/built-in.o: In function `musb_gadget_queue':
musb_gadget.c:(.text+0x35a8c0): undefined reference to `dma_map_single'
musb_gadget.c:(.text+0x35a8d0): undefined reference to `dma_mapping_error'
musb_gadget.c:(.text+0x35a906): undefined reference to `dma_sync_single_for_cpu'
musb_gadget.c:(.text+0x35a9a0): undefined reference to `dma_unmap_single'
musb_gadget.c:(.text+0x35a9c8): undefined reference to `dma_sync_single_for_cpu'
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>
instead of relying on the otg pointer, which
can be NULL in certain cases, we can use the
gadget and host pointers we already hold inside
struct musb.
Cc: <stable@vger.kernel.org>
Tested-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
debugfs files to show the contents of important dsps registers.
Signed-off-by: Markus Pargmann <mpa@pengutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
schedule_delayed_work() takes the delay in jiffies, not msecs.
This bug slipped in with the recent reset logic cleanup
(8ed1fb790ea: "usb: musb: finish suspend/reset work independently from
musb_hub_control()").
Signed-off-by: Daniel Mack <daniel@zonque.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Replace kzalloc by devm_kzalloc and remove the kfree() calls.
Signed-off-by: Markus Pargmann <mpa@pengutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
musb_port_reset() is called from musb_hub_control() which in turn holds
a spinlock, so musb_port_reset() is not allowed to call msleep().
With the asynchronous work helpers in place, this is fortunately easy to
fix by rescheduling the reset deassertion function to after the time
when the wait period is finished.
Note, however, that the MUSB_POWER_RESUME bit is only set on AM33xx
processors under rare conditions such as when to another driver
reporting an error during suspend. Hence, this didn't hit me yet in
normal operation.
Signed-off-by: Daniel Mack <zonque@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
During resume don't touch SUSPENDM/RESUME bits of POWER register
while restoring controller context. These bits might be changed
by the controller during resume operation and so will be different
than what they were during suspend.
e.g. SUSPENDM bit is set by software during USB global suspend but
automatically cleared by the controller during remote wakeup or
during resume. Setting this bit back while restoring context
causes undesired behaviour. i.e. Babble interrupt is generated
and USB is broken.
Signed-off-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Disables PING on status phase of control transfer.
PING token is not mandatory in status phase of control transfer
and so some high speed USB devices don't support it. If such devices
are connected to MUSB then they would not respond to PING token
causing delayed or failed enumeration.
[Roger Q] Fixes enumeration issues with some Super-Speed USB hubs
e.g. Dlink DUB-1340
Signed-off-by: Ajay Kumar Gupta <ajay.gupta@ti.com>
Signed-off-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
In case of ISOCH transfers the hrtimer workaround for the hardware issue
is not very reliable. Instead of checking musb_is_tx_fifo_empty() in hrtimer
routine, schedule a completion work and check the same in completion work.
Signed-off-by: George Cherian <george.cherian@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Enable CPPI to handle high bandwidth transfers, especially to support
webcam captures. Use a single bd to get the whole of the data in case of
high bandwidth transfers.
Signed-off-by: George Cherian <george.cherian@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Enable the isochrounous IN handling for AM335x HOST.
Reprogram CPPI to receive consecutive ISOCH frames in the same URB.
Signed-off-by: George Cherian <george.cherian@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
None of these files are actually using any __init type directives
and hence don't need to include <linux/init.h>. Most are just a
left over from __devinit and __cpuinit removal, or simply due to
code getting copied from one driver to the next.
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This pull request is quite extensive, containing
105 non-merge commits. Because of that, we describe
the changes in sections below:
New drivers:
- Keystone PHY driver and DWC3 Glue Layer
- Aeroflex Gaisler GRUSBDC
- Tahvo PHY driver for N770
- JZ4740 MUSB gluer Layer
- Broadcom PHY Driver
Important new features:
- MUSB DSPS learned about suspend/resume
- New quirk_ep_out_aligned_size flag added to struct usb_gadget
- DWC3 initializes the new quirk flag so gadget drivers can use it.
- AM335x PHY Driver learns about remote wakeup
- Renesas USBHS now requests DMA Engine only once
- s3c-hsotg is now re-used on Broadcom devices
- USB PHY layer now makes sure to initialize the notifier for all
drivers
- omap-control learned about TI's new AM437x devices
- few other usb gadget/function drivers learned about the new
configfs-based binding.
Misc Fixes and Clean Ups:
- Several sparse fixes all over the place
- Removal of redundant of_match_ptr()
- r-car gen2 phy now uses usb_add_phy_dev()
- removal of DEFINE_PCI_DEVICE_TABLE() from a few drivers
- conversion to clk_prepare/clk_unprepare on r8a66597-udc
- some randconfig errors and build warnings were fixed
- removal of unnecessary lock on dwc3-omap.c
Signed-of-by: Felipe Balbi <balbi@ti.com>
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.15 (GNU/Linux)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=N4//
-----END PGP SIGNATURE-----
Merge tag 'usb-for-v3.14' of git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb into usb-next
Felipe writes:
usb: changes for v3.14 merge window
This pull request is quite extensive, containing
105 non-merge commits. Because of that, we describe
the changes in sections below:
New drivers:
- Keystone PHY driver and DWC3 Glue Layer
- Aeroflex Gaisler GRUSBDC
- Tahvo PHY driver for N770
- JZ4740 MUSB gluer Layer
- Broadcom PHY Driver
Important new features:
- MUSB DSPS learned about suspend/resume
- New quirk_ep_out_aligned_size flag added to struct usb_gadget
- DWC3 initializes the new quirk flag so gadget drivers can use it.
- AM335x PHY Driver learns about remote wakeup
- Renesas USBHS now requests DMA Engine only once
- s3c-hsotg is now re-used on Broadcom devices
- USB PHY layer now makes sure to initialize the notifier for all
drivers
- omap-control learned about TI's new AM437x devices
- few other usb gadget/function drivers learned about the new
configfs-based binding.
Misc Fixes and Clean Ups:
- Several sparse fixes all over the place
- Removal of redundant of_match_ptr()
- r-car gen2 phy now uses usb_add_phy_dev()
- removal of DEFINE_PCI_DEVICE_TABLE() from a few drivers
- conversion to clk_prepare/clk_unprepare on r8a66597-udc
- some randconfig errors and build warnings were fixed
- removal of unnecessary lock on dwc3-omap.c
Signed-of-by: Felipe Balbi <balbi@ti.com>
Removing the check to usb_disable() before registering the platform
driver allows to build this driver when !USB && USB_GADGET, to be
used in gadget-only mode.
Also, use module_platform_driver() to register the platform driver.
Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This USB controller can work in as host-only, gadget-only or dual-role
modes. Rework the dependency on the USB and USB_GADGET configs in order
to allow building the driver when !USB or !USG_GADGET.
Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This is a fall-out from "usb: musb: finish suspend/reset work
independently from musb_hub_control()" that I missed because the
MUSB_POWER register does not have the MUSB_POWER_SUSPENDM bit set on
AM335x platforms; hence the code path was not travelled in my tests.
Signed-off-by: Daniel Mack <zonque@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
musb_port_reset() takes a 2nd arguments. This didn't hit us yet because
this function was never called externally prior to the musb_hub_control
cleanup patch.
Signed-off-by: Daniel Mack <zonque@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
JZ4740 USB Device Controller is not OTG compatible and does not have
DEVCTL register in silicon.
During ethernet-over-usb transactions, on reset, musb driver tries to
read from DEVCTL and consequently sets device as host (A-Device)
instead of peripheral (B-Device), which makes it a composite device to
the USB gadget driver.
This induces a kernel panic during power down where the USB gadget
driver does a null pointer dereference when trying to access the
composite device configuration.
On reset, do not rely on DEVCTL value for setting gadget peripheral
mode. Use is_otg flag instead to set it to B-Device.
Signed-off-by: Apelete Seketeli <apelete@seketeli.net>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Add support for Ingenic JZ4740 USB Device Controller through a
specific musb glue layer.
JZ4740 UDC not being OTG compatible and missing some hardware
registers, this musb glue layer is written from scratch to be used in
gadget mode only and take silicon design specifics into account.
Signed-off-by: Apelete Seketeli <apelete@seketeli.net>
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Currently, resume and reset is completed when the USB core calls back
the root hub, asking for the port's state. This results in
unpredictable timing of state assertion, which in turn renders some
USB devices unusable after resume.
Fix this by moving the logic to end the reset and suspend state out of
musb_hub_control() into separate functions called from delayed workers.
GetPortStatus only reports the current state now, without taking any
real action.
The rh_timeout variable is kept in order to define a minimum time gap
between reset and resume only.
FWIW, in my case, a Verbatim "STORE N GO" mass storage device won't
resume cleanly without this patch.
Signed-off-by: Daniel Mack <zonque@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.15 (GNU/Linux)
iQEcBAABAgAGBQJSrhGrAAoJEHm+PkMAQRiGsNoH/jIK3CsQ2lbW7yRLXmfgtbzz
i2Kep6D4SDvmaLpLYOVC8xNYTiE8jtTbSXHomwP5wMZ63MQDhBfnEWsEWqeZ9+D9
3Q46p0QWuoBgYu2VGkoxTfygkT6hhSpwWIi3SeImbY4fg57OHiUil/+YGhORM4Qc
K4549OCTY3sIrgmWL77gzqjRUo+pQ4C73NKqZ3+5nlOmYBZC1yugk8mFwEpQkwhK
4NRNU760Fo+XIht/bINqRiPMddzC15p0mxvJy3cDW8bZa1tFSS9SB7AQUULBbcHL
+2dFlFOEb5SV1sNiNPrJ0W+h2qUh2e7kPB0F8epaBppgbwVdyQoC2u4uuLV2ZN0=
=lI2r
-----END PGP SIGNATURE-----
Merge tag 'v3.13-rc4' into next
Linux 3.13-rc4
* tag 'v3.13-rc4': (1001 commits)
Linux 3.13-rc4
null_blk: mem garbage on NUMA systems during init
radeon_pm: fix oops in hwmon_attributes_visible() and radeon_hwmon_show_temp_thresh()
Revert "selinux: consider filesystem subtype in policies"
igb: Fix for issue where values could be too high for udelay function.
i40e: fix null dereference
ARM: fix asm/memory.h build error
dm array: fix a reference counting bug in shadow_ablock
dm space map: disallow decrementing a reference count below zero
mm: memcg: do not allow task about to OOM kill to bypass the limit
mm: memcg: fix race condition between memcg teardown and swapin
thp: move preallocated PTE page table on move_huge_pmd()
mfd/rtc: s5m: fix register updating by adding regmap for RTC
rtc: s5m: enable IRQ wake during suspend
rtc: s5m: limit endless loop waiting for register update
rtc: s5m: fix unsuccesful IRQ request during probe
drivers/rtc/rtc-s5m.c: fix info->rtc assignment
include/linux/kernel.h: make might_fault() a nop for !MMU
drivers/rtc/rtc-at91rm9200.c: correct alarm over day/month wrap
procfs: also fix proc_reg_get_unmapped_area() for !MMU case
...
Signed-off-by: Felipe Balbi <balbi@ti.com>
This patch adds "maxpacket_limit" to struct usb_ep. This field contains
maximum value of maxpacket supported by driver, and is set in driver probe.
This value should be used by autoconfig() function, because value of field
"maxpacket" is set to value from endpoint descriptor when endpoint becomes
enabled. So when autoconfig() function will be called again for this endpoint,
"maxpacket" value will contain wMaxPacketSize from descriptior instead of
maximum packet size for this endpoint.
For this reason this patch adds new field "maxpacket_limit" which contains
value of maximum packet size (which defines maximum endpoint capabilities).
This value is used in ep_matches() function used by autoconfig().
Value of "maxpacket_limit" should be set in UDC driver probe function, using
usb_ep_set_maxpacket_limit() function, defined in gadget.h. This function
set choosen value to both "maxpacket_limit" and "maxpacket" fields.
This patch modifies UDC drivers by adding support for maxpacket_limit.
Signed-off-by: Robert Baldyga <r.baldyga@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Individual controller driver has different requirement for wakeup
setting, so move it from core to itself. In order to align with
current etting the default wakeup setting is enabled (except for
chipidea host).
Pass compile test with below commands:
make O=outout/all allmodconfig
make -j$CPU_NUM O=outout/all drivers/usb
Signed-off-by: Peter Chen <peter.chen@freescale.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Only start the otg_timer in dual role mode; otherwise in peripheral mode
when musb is disconnected from the host port, otg_timer starts and
continuously toggles the session, which causes VBUS pulse.
Signed-off-by: Bin Liu <b-liu@ti.com>
Acked-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
The dsps platform needs to save save some registers at suspend time and
restore them after resume. This patch adds a struct for these registers,
and also lets the musb core know that the core registers need to be
saved as well.
We also have to explicitly de-assert the port reset upon resume on this
platform, but musb_port_reset() should not be called from glue layers.
Hence, introduce a flag in struct musb_hdrc_config for this.
Signed-off-by: Daniel Mack <zonque@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
rx_mode and tx_mode need to be read at suspend time and restored on
resume for dsps platforms. So add it to the wrapper struct first, and
initialize the values.
Signed-off-by: Daniel Mack <zonque@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Make musb_port_suspend() externally available, and call it when to host
goes into suspend. This allows the core to go into suspend while a
device is connected.
Signed-off-by: Daniel Mack <zonque@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
It appears not all platforms featuring a musb core need to save the musb
core registers at suspend time and restore them on resume.
The dsps platform does, however, and because it shouldn't cause any
trouble on other platforms, do it unconditionally for all of them.
Signed-off-by: Daniel Mack <zonque@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
this will let us support broken designs such
as AM335x EVM SK where ID pin isn't routed
anywhere on a host port.
With this we can toggle internal IDDIG signal
and make sure MUSB goes into host mode as
necessary.
Signed-off-by: Felipe Balbi <balbi@ti.com>
Since commit c5340bd14 ("usb: musb: cancel work on removal") the workqueue
is cancelled but then if we bail out before the workqueue is setup we
get this:
|INFO: trying to register non-static key.
|the code is fine but needs lockdep annotation.
|turning off the locking correctness validator.
|CPU: 0 PID: 708 Comm: modprobe Not tainted 3.12.0+ #435
|[<c00867bc>] (lock_acquire+0xf0/0x108) from [<c00529d0>] (flush_work+0x38/0x2ec)
|[<c00529d0>] (flush_work+0x38/0x2ec) from [<c0052d24>] (__cancel_work_timer+0xa0/0x134)
|[<c0052d24>] (__cancel_work_timer+0xa0/0x134) from [<bf0e4ae4>] (musb_free+0x40/0x60 [musb_hdrc])
|[<bf0e4ae4>] (musb_free+0x40/0x60 [musb_hdrc]) from [<bf0e5364>] (musb_probe+0x678/0xb78 [musb_hdrc])
|[<bf0e5364>] (musb_probe+0x678/0xb78 [musb_hdrc]) from [<c0294bf0>] (platform_drv_probe+0x1c/0x24)
|[<c0294bf0>] (platform_drv_probe+0x1c/0x24) from [<c0293970>] (driver_probe_device+0x90/0x224)
|[<c0293970>] (driver_probe_device+0x90/0x224) from [<c0291ef0>] (bus_for_each_drv+0x60/0x8c)
|[<c0291ef0>] (bus_for_each_drv+0x60/0x8c) from [<c02938bc>] (device_attach+0x80/0xa4)
|[<c02938bc>] (device_attach+0x80/0xa4) from [<c0292b24>] (bus_probe_device+0x88/0xac)
|[<c0292b24>] (bus_probe_device+0x88/0xac) from [<c0291490>] (device_add+0x388/0x6c8)
|[<c0291490>] (device_add+0x388/0x6c8) from [<c02952a0>] (platform_device_add+0x188/0x22c)
|[<c02952a0>] (platform_device_add+0x188/0x22c) from [<bf11ea30>] (dsps_probe+0x294/0x394 [musb_dsps])
|[<bf11ea30>] (dsps_probe+0x294/0x394 [musb_dsps]) from [<c0294bf0>] (platform_drv_probe+0x1c/0x24)
|platform musb-hdrc.1.auto: Driver musb-hdrc requests probe deferral
|musb-hdrc musb-hdrc.1.auto: musb_init_controller failed with status -517
This patch moves the init part to earlier part so it can be cleaned as
part of the fail3 label because now it is surrounded by the fail4 label.
Step two is to remove it from musb_free() and add it to the two cleanup
paths (error path and device removal) separately.
Cc: stable@vger.kernel.org
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
The TX-complete interrupt of the CPPI41 on AM335x fires too early.
Adding a loop and counting how long it takes until the
MUSB_TXCSR_TXPKTRDY bit is cleared I see
FS:
|musb-hdrc musb-hdrc.0.auto: configure ep1/80 packet_sz=64, mode=0, dma_addr=0xadc54002, len=1514 is_tx=1
|cppi41_dma_callback() 74 loops
|musb-hdrc musb-hdrc.0.auto: configure ep1/80 packet_sz=64, mode=0, dma_addr=0xadcd8802, len=1514 is_tx=1
|cppi41_dma_callback() 66 loops
|musb-hdrc musb-hdrc.0.auto: configure ep1/80 packet_sz=64, mode=0, dma_addr=0xadcd8002, len=1514 is_tx=1
|cppi41_dma_callback() 136 loops
|musb-hdrc musb-hdrc.0.auto: configure ep1/80 packet_sz=64, mode=0, dma_addr=0xadf55802, len=1514 is_tx=1
|cppi41_dma_callback() 136 loops
avg: 110 - 150us
HS:
|musb-hdrc musb-hdrc.0.auto: configure ep1/80 packet_sz=512, mode=0, dma_addr=0xaca6f002, len=1514 is_tx=1
|cppi41_dma_callback() 0 loops
|musb-hdrc musb-hdrc.0.auto: configure ep1/80 packet_sz=512, mode=0, dma_addr=0xadd6f802, len=1514 is_tx=1
|cppi41_dma_callback() 2 loops
|musb-hdrc musb-hdrc.0.auto: configure ep1/80 packet_sz=512, mode=0, dma_addr=0xadd6f002, len=1514 is_tx=1
|cppi41_dma_callback() 13 loops
avg: 2us
for the same test case. One loop means a udelay(1). The delay seems to
depend on the packet size. On HS the bit is always cleared for small
packet sizes while on FS it is never the case, it mostly around 110us.
This testing has been performed with g_ether (musb as device) and using BULK
transfers.
INTR transfers are way more fun: during init the gadget sends a INT
packet to the host and cppi41 says "transfer done" shortly after. The
MUSB_TXCSR_TXPKTRDY bit is set even seconds later. The reason is that the host
did not try to receive it, it does so after the interface (on host side) has
been configured. Until this happens, that packet remains in musb's FIFO.
To fix this, two things are done:
- No DMA transfers for INT based endpoints. These transfer are usually
very small and rare so it is likely better to skip the DMA engine and
stuff the four bytes directly into the FIFO
- on HS we poll up to 25us and hope that bit goes away. If not we setup
a hrtimer to poll for it. The 140us delay is a rule of thumb. In FS
the command
| ping 10.10.10.10 -c1 -s65130
creates about 44 1514bytes transfers. About 19 of them need a second
timer to complete.
Reported-by: Bin Liu <b-liu@ti.com>
Cc: stable@vger.kernel.org
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This patch moves most of the logic in cppi41_dma_callback() into
cppi41_trans_done() where it can be called from another function.
Instead of computing "transferred" (the number of bytes transferred in
the last transaction) in cppi41_trans_done() the member
"cppi41_channel->prog_len" is now set to 0 if the transfer as a whole
can be considered as done. If it is != 0 then the next iteration is
assumed.
This is a preparation for a workaround.
Cc: stable@vger.kernel.org
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
The musb driver is usable in host, gadget or dual role mode depending
on the kernel configuration.
However, the musb gadget part of the driver is enabling OTG mode
whether the driver is built for dual role or gadget only mode. This
induces a bug for gadget only USB device controllers where the kernel
tries to use Host Negotiation Protocol with such controllers, which
causes a panic.
This behaviour is now fixed by enabling OTG mode only when musb driver
is built for dual role mode.
Signed-off-by: Apelete Seketeli <apelete@seketeli.net>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Most of this branch consists of updates, additions and general churn of
the device tree source files in the kernel (arch/arm/boot/dts). Besides
that, there are a few things to point out:
- Lots of platform conversion on OMAP2+, with removal of old board files
for various platforms.
- Final conversion of a bunch of ux500 (ST-Ericsson) platforms as well
- Some updates to pinctrl and other subsystems. Most of these are for
DT-enablement of the various platforms and acks have been collected.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.11 (GNU/Linux)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=nH67
-----END PGP SIGNATURE-----
Merge tag 'dt-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC DT updates from Olof Johansson:
"Most of this branch consists of updates, additions and general churn
of the device tree source files in the kernel (arch/arm/boot/dts).
Besides that, there are a few things to point out:
- Lots of platform conversion on OMAP2+, with removal of old board
files for various platforms.
- Final conversion of a bunch of ux500 (ST-Ericsson) platforms as
well
- Some updates to pinctrl and other subsystems. Most of these are
for DT-enablement of the various platforms and acks have been
collected"
* tag 'dt-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (385 commits)
ARM: dts: bcm11351: Use GIC/IRQ defines for sdio interrupts
ARM: dts: bcm: Add missing UARTs for bcm11351 (bcm281xx)
ARM: dts: bcm281xx: Add card detect GPIO
ARM: dts: rename ARCH_BCM to ARCH_BCM_MOBILE (dt)
ARM: bcm281xx: Add device node for the GPIO controller
ARM: mvebu: Add Netgear ReadyNAS 104 board
ARM: tegra: fix Tegra114 IOMMU register address
ARM: kirkwood: add support for OpenBlocks A7 platform
ARM: dts: omap4-panda: add DPI pinmuxing
ARM: dts: AM33xx: Add RNG node
ARM: dts: AM33XX: Add hwspinlock node
ARM: dts: OMAP5: Add hwspinlock node
ARM: dts: OMAP4: Add hwspinlock node
ARM: dts: use 'status' property for PCIe nodes
ARM: dts: sirf: add missed address-cells and size-cells for prima2 I2C
ARM: dts: sirf: add missed cell, cs and dma channel for SPI nodes
ARM: dts: sirf: add missed graphics2d iobg in atlas6 dts
ARM: dts: sirf: add missed chhifbg node in prima2 and atlas6 dts
ARM: dts: sirf: add missed memcontrol-monitor node in prima2 and atlas6 dts
ARM: mvebu: Add the core-divider clock to Armada 370/XP
...
Final conversions to configfs for mass storage, acm_ms, and
multi gadgets.
MUSB should now work out of the box on AM335x-based boards
(beagle bone white and black) with DMA thanks to Sebastian's
work.
We can now enable VERBOSE_DEBUG on builds of drivers/usb/gadget/
by selecting CONFIG_USB_GADGET_VERBOSE.
s3c-hsotg got quite a few non-critical fixes but also learned
a few new tricks (isochronous transfers, multi count support).
The Marvel USB3 Controller driver got a memory leak fix.
devm_usb_get_phy() learned not to return NULL, ever.
Other than these patches, we have the usual set of cleanups
ranging from removal of unnecessary *_set_drvdata() to using
SIMPLE_DEV_PM_OPS.
Signed-of-by: Felipe Balbi <balbi@ti.com>
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.15 (GNU/Linux)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=LDY7
-----END PGP SIGNATURE-----
Merge tag 'usb-for-v3.13' of git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb into usb-next
Felipe writes:
usb: patches for v3.13
Final conversions to configfs for mass storage, acm_ms, and
multi gadgets.
MUSB should now work out of the box on AM335x-based boards
(beagle bone white and black) with DMA thanks to Sebastian's
work.
We can now enable VERBOSE_DEBUG on builds of drivers/usb/gadget/
by selecting CONFIG_USB_GADGET_VERBOSE.
s3c-hsotg got quite a few non-critical fixes but also learned
a few new tricks (isochronous transfers, multi count support).
The Marvel USB3 Controller driver got a memory leak fix.
devm_usb_get_phy() learned not to return NULL, ever.
Other than these patches, we have the usual set of cleanups
ranging from removal of unnecessary *_set_drvdata() to using
SIMPLE_DEV_PM_OPS.
Signed-of-by: Felipe Balbi <balbi@ti.com>
If everything (musb, cppi41, phy) is built-in then musb will start
without the dma engine printing only
|musb-hdrc musb-hdrc.0.auto: Falied to request rx1.
The reason for this is that the musb device structs are created & probed
before those of the cppi41 device. So the cppi41 device is probed too
late.
As a workaround for this allow the musb_cppi41 part to defer the probe
if everything is fine except for the missing DMA controller. In case of
another error we continue.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
In commit f3ce4d5 ("usb: musb: core: call dma_controller_destroy() in the err path")
I erroneously assumed that the dma controller is not removed in the
error patch. This was wrong because it happens later via musb_free().
That means the original commit can be reverted because it is wrong or we
do this, so it is more obvious.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
The patch fixes two issues in the error path cleanup:
- in MUSB_PORT_MODE_DUAL_ROLE mode, if musb_gadget_setup() fails we
never cleanup the host struct earlier allocated.
- if musb_init_debugfs() or sysfs_create_group() fails, then we never
free the host part initialization, only device part.
Cc: stable@vger.kernel.org # v3.11
Cc: Daniel Mack <zonque@gmail.com>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
I introduced this check here because it looked wrong in HOST only
configurions. The timer would remove that session bit and will never
come back and so there would not be another session.
Now that I played with OTG for a while I belive this workaround is
only required for the OTG mode because we have to end the session and
then we have to try to start manually.
Therefore, this patch limits this timer to the OTG only port mode so we
don't need to poll around in device only mode.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
According to the comments, we rely on the OTG timer because the core
does not expose some important OTG details. So far this is all I
know. After playing with OTG I stumbled over a problem:
musb is recognized as a B-device without a problem. Whenever a cable is
plugged, the VBUS rises, musb recognizes this as a starting session,
sets the MUSB_DEVCTL_SESSION bit by itself and a RESET interrupt occurs,
the session starts. Good.
After a disconnect, the timer is started and re-starts itself because
it remains in B_IDLE with the BDEVICE set. I didn't figure the the
reason or the need for it. Nothing changes here except for OTG state
from B to A device if the BDEVICE bit disappears. This doesn't make much
sense to me because nothing happens after this. _IF_ we receive an
interrupt before the state change then we may act on wrong condition.
Plugging a B-device (and letting MUSB act as host) doesn't work here.
The reason seems to be that the MUSB tries to start a session, it fails
and then it removes the bit. So we never start as a host.
This patch sets the MUSB_DEVCTL_SESSION bit in the IDLE state so musb
can try to establish a session as host. After the bit is set, musb tries
to start a session and if it fails it clears the bit. Therefore it will
try over and over again until a session either as host or as device is
established.
The readout of the MUSB_DEVCTL register after the removal the
MUSB_DEVCTL_SESSION (in A_WAIT_BCON) has been removed because it did not
contain the BDEVICE bit set (in the second read) leading to A_IDLE. After
plugging a host musb assumed that it is also a host and complained about
a missing reset. However a third read of the register has has the BDEVICE
bit set so it seems that it is not stable.
This mostly what da8xx.c is doing except that we set the timer also
after A_WAIT_BCON so the session bit can be triggered.
Whit this change I was able to keep am335x-evm in OTG mode and plug in
either a HOST or a DEVICE and in a random order and the device was
recognized.
Cc: stable@vger.kernel.org # v3.11
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This patch moves dsps_musb_try_idle() before dsps_musb_enable() so the
declaration (of dsps_musb_try_idle() can be removed.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
The timer is initialized right after musb is probed. There is actually
no need to have this timer running because _nothing_ will happen until
we have the gadget loaded. Also we need this timer only if we run in OTG
mode _and_ we need it also after the gadget has been replaced with
another one.
I've been looking at am35x.c, da8xx.c, omap2430.c, tusb6010.c. da8xx
seem to have the same problem as dsps and doing mostly the same thing.
tusb6010 seem to do something different and do some actual "idle / power
saving" work so I am not too comfortable to remove
musb_platform_try_idle() from musb_gadget_setup().
Therefore this patch does not start the timer if there is no gadget
active (which is at musb_gadget_setup() at time). In order to have the
timer active after the gadget is loaded it will be triggered from
dsps_musb_enable().
Cc: stable@vger.kernel.org # v3.11
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
In commit 001dd84 ("usb: musb: start musb on the udc side, too") it was
ensured that the state engine is started also in OTG mode after a
removal / insertion of the gadget.
Unfortunately this change also introduced a bug: If the device is
configured as OTG and it connected with a remote host _without_ loading
a gadget then we bug() later (because musb->otg->gadget is not
initialized).
Initially I assumed it might be nice to have the host part of musb in
OTG mode working without having a gadget loaded. This bug and fact that
it wasn't working like this before the host/gadget split made me realize
that this was a silly idea.
This patch now introduces back the old behavior where in OTG mode the
host mode is only working after the gadget has been loaded.
Cc: stable@vger.kernel.org # v3.11
Cc: Daniel Mack <zonque@gmail.com>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
- Always build in board-generic, and add pdata quirks and auxdata
support for it so we have all the pdata related quirks
in the same place.
- Merge of the drivers/pinctrl changes that are needed for PM
to continue working on omap3 and also needed for other omaps
eventually. The three pinctrl related patches have been acked
by Linus Walleij and are pulled into both the pinctrl tree
and this branch.
- Few defconfig related changes for drivers needed.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.14 (GNU/Linux)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=bqsS
-----END PGP SIGNATURE-----
Merge tag 'omap-for-v3.13/quirk-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into next/dt
From Tony Lindgren:
Changes needed to prepare for making omap3 device tree only:
- Always build in board-generic, and add pdata quirks and auxdata
support for it so we have all the pdata related quirks
in the same place.
- Merge of the drivers/pinctrl changes that are needed for PM
to continue working on omap3 and also needed for other omaps
eventually. The three pinctrl related patches have been acked
by Linus Walleij and are pulled into both the pinctrl tree
and this branch.
- Few defconfig related changes for drivers needed.
* tag 'omap-for-v3.13/quirk-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap: (523 commits)
ARM: configs: omap2plus_defconfig: enable dwc3 and dependencies
ARM: OMAP2+: Add WLAN modules and of_serial to omap2plus_defconfig
ARM: OMAP2+: Run make savedefconfig on omap2plus_defconfig to shrink it
ARM: OMAP2+: Add minimal 8250 support for GPMC
ARM: OMAP2+: Use pdata quirks for wl12xx for omap3 evm and zoom3
ARM: OMAP: Move DT wake-up event handling over to use pinctrl-single-omap
ARM: OMAP2+: Add support for auxdata
pinctrl: single: Add support for auxdata
pinctrl: single: Add support for wake-up interrupts
pinctrl: single: Prepare for supporting SoC specific features
ARM: OMAP2+: igep0020: use display init from dss-common
ARM: OMAP2+: pdata-quirks: add legacy display init for IGEPv2 board
+Linux 3.12-rc4
Signed-off-by: Kevin Hilman <khilman@linaro.org>
This reverts commit 9b0a1de3c8.
Aaro writes:
With v3.12-rc4 I can no longer connect to N800 (OMAP2) with USB
(peripheral, g_ether).
According to git bisect this is caused by:
9b0a1de3c8 is the first bad commit
So revert this patch, as Felipe says:
It's unfortunate that tusb6010 is so messed up
Reported-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Acked-by: Felipe Balbi <balbi@ti.com>
Cc: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
These aren't necessary after switch and if blocks.
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
I have am335x-evm with one port running in OTG mode. Since commit
fe4cb09 ("usb: musb: gadget: remove hcd initialization") the loaded
gadget does non pop up on the host. All I see is
|usb 4-5: new high-speed USB device number 52 using ehci-pci
|usb 4-5: device descriptor read/64, error -110
Since a later commit 2cc65fe ("usb: musb: add musb_host_setup() and
musb_host_cleanup()) the gadget shows up on the host again but only
in OTG mode (because we have the host init code running). It does not
work in device only mode.
If running in OTG mode and the gadget is removed and added back (rmmod
followed by modprobe of a gadget) then the same error is pops up on the
host side.
This patch ensures that the gadget side also executes musb_start() which
puts the chip in "connect accept" mode. With this change the device
works in OTG & device mode and the gadget can be added & removed
multiple times.
A device (if musb is in OTG mode acting as a host) is only recognized if
it is attached during module load (musb_hdrc module). After the device
unplugged and plugged again the host does not recognize it. We get a
buch of errors if musb running in OTG mode, attached to a host and no
gadget is loaded. Bah.
This is one step forward. Host & device only mode should work. I will
look at OTG later. I looked at this before commit fe4cb09 and OTG wasn't
working there perfectly so I am not sure that it is a regression :)
Cc: <stable@vger.kernel.org> # v3.11
Cc: Daniel Mack <zonque@gmail.com>
Cc: Peter Korsgaard <jacmet@sunsite.dk>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
So I captured this:
|WARNING: CPU: 0 PID: 2078 at /home/bigeasy/work/new/TI/linux/lib/debugobjects.c:260 debug_print_object+0x94/0xc4()
|ODEBUG: free active (active state 0) object type: work_struct hint: musb_irq_work+0x0/0x38 [musb_hdrc]
|CPU: 0 PID: 2078 Comm: rmmod Not tainted 3.12.0-rc4+ #338
|[<c0014d38>] (unwind_backtrace+0x0/0xf4) from [<c001249c>] (show_stack+0x14/0x1c)
|[<c001249c>] (show_stack+0x14/0x1c) from [<c0037720>] (warn_slowpath_common+0x64/0x84)
|[<c0037720>] (warn_slowpath_common+0x64/0x84) from [<c00377d4>] (warn_slowpath_fmt+0x30/0x40)
|[<c00377d4>] (warn_slowpath_fmt+0x30/0x40) from [<c022ae90>] (debug_print_object+0x94/0xc4)
|[<c022ae90>] (debug_print_object+0x94/0xc4) from [<c022b7e0>] (debug_check_no_obj_freed+0x1c0/0x228)
|[<c022b7e0>] (debug_check_no_obj_freed+0x1c0/0x228) from [<c00f1f38>] (kfree+0xf8/0x228)
|[<c00f1f38>] (kfree+0xf8/0x228) from [<c02921c4>] (release_nodes+0x1a8/0x248)
|[<c02921c4>] (release_nodes+0x1a8/0x248) from [<c028f70c>] (__device_release_driver+0x98/0xf0)
|[<c028f70c>] (__device_release_driver+0x98/0xf0) from [<c028f840>] (device_release_driver+0x24/0x34)
|[<c028f840>] (device_release_driver+0x24/0x34) from [<c028ebe8>] (bus_remove_device+0x148/0x15c)
|[<c028ebe8>] (bus_remove_device+0x148/0x15c) from [<c028d120>] (device_del+0x104/0x1c0)
|[<c028d120>] (device_del+0x104/0x1c0) from [<c02911e4>] (platform_device_del+0x18/0xac)
|[<c02911e4>] (platform_device_del+0x18/0xac) from [<c029179c>] (platform_device_unregister+0xc/0x18)
|[<c029179c>] (platform_device_unregister+0xc/0x18) from [<bf1902fc>] (dsps_remove+0x20/0x4c [musb_dsps])
|[<bf1902fc>] (dsps_remove+0x20/0x4c [musb_dsps]) from [<c0290d7c>] (platform_drv_remove+0x1c/0x24)
|[<c0290d7c>] (platform_drv_remove+0x1c/0x24) from [<c028f704>] (__device_release_driver+0x90/0xf0)
|[<c028f704>] (__device_release_driver+0x90/0xf0) from [<c028f818>] (driver_detach+0xb4/0xb8)
|[<c028f818>] (driver_detach+0xb4/0xb8) from [<c028e6e8>] (bus_remove_driver+0x98/0xec)
|[<c028e6e8>] (bus_remove_driver+0x98/0xec) from [<c008fc70>] (SyS_delete_module+0x1e0/0x24c)
|[<c008fc70>] (SyS_delete_module+0x1e0/0x24c) from [<c000e680>] (ret_fast_syscall+0x0/0x48)
|---[ end trace d79045419a3e51ec ]---
The workqueue is only scheduled from the ep0 and never canceled in case
the musb is removed before the work has a chance to run.
Cc: stable@vger.kernel.org
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
The data structure of_match_ptr() protects is always compiled in.
Hence of_match_ptr() is not needed.
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>
omap_get_control_dev() is being deprecated as it doesn't support
multiple instances. As control device is present only from OMAP4
onwards which supports DT only, we use phandles to get the
reference to the control device.
Also get rid of "ti,has-mailbox" property as it is redundant and
we can determine that from whether "ctrl-module" property is present
or not. Get rid of has_mailbox from musb_hdrc_platform_data as well.
Signed-off-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This removes the DEV_PM_OPS macro and brings this file in line with the
other musb platform drivers.
Signed-off-by: Daniel Mack <zonque@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This makes bfin_pm_ops const and will stub the struct out in case
CONFIG_PM_SLEEP is not set.
Signed-off-by: Daniel Mack <zonque@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This makes am35x_pm_ops const and will stub the struct out in case
CONFIG_PM_SLEEP is not set.
Signed-off-by: Daniel Mack <zonque@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
The data structure of_match_ptr() protects is always compiled in.
Hence of_match_ptr() is not needed.
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Cc: Ravi B <ravibabu@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
After commit 09fc7d22b0 (usb: musb: fix incorrect
usage of resource pointer), CPPI DMA driver on DaVinci DM6467 can't detect its
dedicated IRQ and so the MUSB IRQ is erroneously used instead. This is because
only 2 resources are passed to the MUSB driver from the DaVinci glue layer, so
fix this by always copying 3 resources (it's safe since a placeholder for the
3rd resource is always there) and passing 'pdev->num_resources' instead of the
size of musb_resources[] to platform_device_add_resources().
Cc: <stable@vger.kernel.org> # 3.11+
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Use platform_device_register_full() for those drivers which can, to
avoid messing directly with DMA masks. This can only be done when
the driver does not need to access the allocated musb platform device
from within its callbacks, which may be called during the musb
device probing.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Felipe Balbi <balbi@ti.com>
More power supply drivers depends on vbus events and without it they not
working. Power supply drivers using usb_register_notifier, so to deliver
events it is needed to call atomic_notifier_call_chain.
So without atomic notifier power supply driver isp1704 not retrieving
vbus status and reporting bogus values to userspace and also to board
platform data functions. Without proper data charger drivers trying to
charge battery also when charger is disconnected or do not start charging
when wallcharger connects.
Atomic notifier in musb driver was used before v3.5 and was replaced with
omap mailbox. This patch adding atomic_notifier_call_chain call from
function omap_musb_set_mailbox.
Signed-off-by: Pali Rohár <pali.rohar@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
The Kconfig help text is talking about the U5500 which is no
longer supported by the kernel. Name the help text after the
config symbol which is more correct.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This went unnoticed in durin the merge window:
The dsps driver creates a child device for the musb core driver _and_
attaches the of_node to it so devm_usb_get_phy_by_phandle() grabs the
correct phy and attaches the devm resources to the proper device. We
could also use the parent device but then devm would attach the
resource to the wrong device and it would be destroyed once the parent
device is gone - not the device that is used by the musb core driver.
If the phy is now not available then dsps_musb_init() /
devm_usb_get_phy_by_phandle() returns with EPROBE_DEFER. Since the
of_node is attached it tries OF drivers as well and matches the driver
against DSPS. That one creates a new child device for the musb core
driver which gets probed immediately.
The whole thing repeats itself until the stack overflows.
I belive the same problem exists in ux500 glue code (since 313bdb11
("usb: musb: ux500: add device tree probing support") but the drivers are
now probed in the right order so they don't see it.
The problem is that the dsps driver gets bound to the musb-child device
due to the same of_node / matching binding. I don't really agree with
having yet another child node in DT to fix this. Ideally we would have
musb core driver with DT bindings and according to the binding we would
select the few extra hacks / gleue layer.
Therefore I suggest the driver to reject the musb-core device.
Cc: Lee Jones <lee.jones@linaro.org>
Tested-by: Tom Rini <trini@ti.com>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Use the generic PHY framework API to get the PHY. The usb_phy_set_resume
and usb_phy_set_suspend is replaced with power_on and
power_off to align with the new PHY framework.
musb->xceiv can't be removed as of now because musb core uses xceiv.state and
xceiv.otg. Once there is a separate state machine to handle otg, these can be
moved out of xceiv and then we can start using the generic PHY framework.
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Reviewed-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Acked-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
If we supply a con_id then the clock framework will search for that name
in MUSB's Device Tree node for the 'clock-names' property. If it's absent
the clock request will fail. However, if we don't supply the con_id then
clk_get() will call into clk_sys() which will use the device name to
search for the appropriate clock, which is much more natural than forcing
'usb'.
Acked-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
In gadget mode, musb->is_active should be set only when connected to the
host. musb_g_reset() already takes care of it.
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Right after the musb_hdrc driver is loaded, the otg default state
is a_idle, and Mode=Host, which are set by musb_host_setup().
This causes the following kernel message during musb gadget
enumeration.
CAUTION: musb: Babble Interrupt Occurred
This patch sets the otg default state to b_idle, and its Mode to
Peripheral.
It has been validated on TI AM335x GP EVM USB0 port with g_zero.
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
After the last architecture switched to generic hard irqs the config
options HAVE_GENERIC_HARDIRQS & GENERIC_HARDIRQS and the related code
for !CONFIG_GENERIC_HARDIRQS can be removed.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Dan Carpenter's automatic Smatch checker found an anomaly in the ux500
MUSB driver, whereby board data was checked before use in all but one
occasion. It is believed that it needs to be checked every time.
Smatch complaint:
drivers/usb/musb/ux500_dma.c:335 ux500_dma_controller_start()
error: we previously assumed 'data' could be null (see line 313)
Cc: Felipe Balbi <balbi@ti.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: linux-usb@vger.kernel.org
Cc: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This is what I observe:
On the first connect, the musb starts with DEVCTL.Session set. On
disconnect, musb_core calls try_idle. That functions removes the Session
bit signalizing that the session is over (something that only in OTG is
required). A new device, that is plugged, is no longer recognized.
I've setup a timer and checked the DEVCTL register and I haven't seen a
change in VBus and I saw the B-Device bit set. After setting the IDDIG
into A mode and forcing the device to behave like a A device, I didn't
see a change.
Neither VBUS goes to 0b11 nor does a session start request comes.
In the TI-v3.2 kernel they skip to call musb_platform_try_idle() in the
OTG_STATE_A_WAIT_BCON state while not in OTG mode.
Since the second port hast a standard A plug the patch changes the port
to run in host mode only and skips the timer which would remove
DEVCTL.Session so we can reconnect to another device later.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Quite early on init there is an vbus / drvvbus interrupt comming and the
dsps code sets is_active to one. As a result we see a lot of
|musb_bus_suspend 2459: trying to suspend as a_wait_bcon while active
until a device is plugged in with pm_runtime enabled in the kernel.
After checking davinci, am35, da8xx I noticed that dsps is actually the
only one doing this.
So remove it and we won't flooded with mesages and the idle port can be
suspended.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This relfects the code and dts requires changes due to recent .dts
binding updates:
- use mg prefix for the Metor Graphics specific attributes
- use power in mA not in mA/2 as specifed in the USB2.0 specification
- remove the child node for USB. This is driver specific on won't be
reflected in the device tree
- use the "mentor" prefix instead of "mg".
- use "dr_mode" istead of "mg,port-mode" for the port mode. The former
is used by a few other drivers.
Cc: Rob Herring <rob.herring@calxeda.com>
Cc: Pawel Moll <pawel.moll@arm.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Stephen Warren <swarren@wwwdotorg.org>
Cc: Ian Campbell <ian.campbell@citrix.com>
Cc: devicetree@vger.kernel.org
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
musb_shutdown() removes always USB host and device.
musb_init_controller() adds host and device depending on port_mode. If
port mode is set to HOST then the removal of UDC leads only to:
|(NULL device *): gadget not registered.
and nothing else happens. If port mode is set to DEVICE and we remove
the host then we oops in usb_remove_hcd().
This patch ensures that we only remove host in OTG/host mode and device
only in OTG/device mode to avoid any trouble.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
devm_ioremap_resource returns an ERR_PTR value, not NULL, on failure.
Furthermore, the value returned by devm_ioremap_resource should be tested.
A simplified version of the semantic match that finds this problem is as
follows: (http://coccinelle.lip6.fr/)
// <smpl>
@@
expression e,e1;
statement S;
@@
*e = devm_ioremap_resource(...);
if (!e1) S
// </smpl>
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Since commit 511f3c53 (usb: gadget: udc-core: fix a regression during
gadget driver unbinding) usb_gadget_remove_driver will pass NULL for
the driver argument.
Signed-off-by: Maarten ter Huurne <maarten@treewalker.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Add the missing unlock before return from function cppi41_dma_callback()
in the error handling case.
Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Since dma_map_single() may fail it is good to actually check the return
code to see if it succeeded.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
All patches here have been pending on linux-usb
and sitting in linux-next for a while now.
The biggest things in this tag are:
DWC3 learned proper usage of threaded IRQ
handlers and now we spend very little time
in hardirq context.
MUSB now has proper support for BeagleBone and
Beaglebone Black.
Tegra's USB support also got quite a bit of love
and is learning to use PHY layer and generic DT
attributes.
Other than that, the usual pack of cleanups and
non-critical fixes follow.
Signed-of-by: Felipe Balbi <balbi@ti.com>
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.12 (GNU/Linux)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=3NS9
-----END PGP SIGNATURE-----
Merge tag 'usb-for-v3.12' of git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb into usb-next
Felipe writes:
usb: patches for v3.12 merge window
All patches here have been pending on linux-usb
and sitting in linux-next for a while now.
The biggest things in this tag are:
DWC3 learned proper usage of threaded IRQ
handlers and now we spend very little time
in hardirq context.
MUSB now has proper support for BeagleBone and
Beaglebone Black.
Tegra's USB support also got quite a bit of love
and is learning to use PHY layer and generic DT
attributes.
Other than that, the usual pack of cleanups and
non-critical fixes follow.
Signed-of-by: Felipe Balbi <balbi@ti.com>
Conflicts:
drivers/usb/gadget/udc-core.c
drivers/usb/host/ehci-tegra.c
drivers/usb/musb/omap2430.c
drivers/usb/musb/tusb6010.c
Since the musb-gadget code now calls the dma engine properly it is
possible to enable it for the TX path in device mode.
AM335x Advisory 1.0.13 says that we may lose the toggle bit on multiple
RX transfers. There is a workaround in host mode but none in device mode
and therefore RX transfers are disabled.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This patch makes use of the two function is_cppi_enabled() and
tusb_dma_omap() instead of the ifdef for the proper DMA implementation
setup code. It basically shifts the code right by one indention level
and adds a few line breaks once the chars are crossed.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This driver is currently used by musb' cppi41 couter part. I may merge
both dma engine user of musb at some point but not just yet.
The driver seems to work in RX/TX mode in host mode, tested on mass
storage. I increaed the size of the TX / RX transfers and waited for the
core code to cancel a transfers and it seems to recover.
v2..3:
- use mall transfers on RX side and check data toggle.
- use rndis mode on tx side so we haveon interrupt for 4096 transfers.
- remove custom "transferred" hack and use dmaengine_tx_status() to
compute the total amount of data that has been transferred.
- cancel transfers and reclaim descriptors
v1..v2:
- RX path added
- dma mode 0 & 1 is working
- device tree nodes re-created.
Cc: Vinod Koul <vinod.koul@intel.com>
Cc: Dan Williams <djbw@fb.com>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This moves the two instances from the big node into two child nodes. The
glue layer ontop does almost nothing.
There is one devices containing the control module for USB (2) phy,
(2) usb and later the dma engine. The usb device is the "glue device"
which contains the musb device as a child. This is what we do ever since.
The new file musb_am335x is just here to prob the new bus and populate
child devices.
There are a lot of changes to the dsps file as a result of the changes:
- musb_core_offset
This is gone. The device tree provides memory ressources information
for the device there is no need to "fix" things
- instances
This is gone as well. If we have two instances then we have have two
child enabled nodes in the device tree. For instance the SoC in beagle
bone has two USB instances but only one has been wired up so there is
no need to load and init the second instance since it won't be used.
- dsps_glue is now per glue device
In the past there was one of this structs but with an array of two and
each instance accessed its variable depending on the platform device
id.
- no unneeded copy of structs
I do not know why struct dsps_musb_wrapper is copied but it is not
necessary. The same goes for musb_hdrc_platform_data which allocated
on demand and then again by platform_device_add_data(). One copy is
enough.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
dsps uses a nop driver which is added in dsps itself and does the PHY
on/off calls within dsps. Since those calls are now moved the nop driver
itself, we can now request the phy proper phy and remove those calls.
Currently only the first musb interface is used so we only add one phy
node for now.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
The "nop" driver isn't a do-nothing-stub but supports a couple functions
like clock on/off or is able to use a voltage regulator. This patch
simply renames the driver to "generic" since it is easy possible to
extend it by a simple function istead of writing a complete driver.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Use the wrapper function for retrieving the platform data instead of
accessing dev->platform_data directly.
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
The EOI register is not present in the AM335x memory space according to
the TRM and thus removed.
Should any platform using the EOI register get merged then it may be
used again if the register address is not zero.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
The ti81xx platform is not fully supported right now. This patch renames
the date structure to a am33xx prefix which is actually used.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Commit 8d2421e ("usb: musb: kill global and static for multi instance")
removed the global dma_mask copy and replaced by parent's DMA mask. The
problem here is that if the parent does not have a dma_mask then
musb_remove() goes kaboom.
Instead trying to fix this I was thinking we do we need to erase
dma_mask in the first place?
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
ti81xx does not have a baseport mainline i.e. it should not boot. The
amount of rework that is required makes it easier to simply remove that
platform (i.e. that possible platform device) and add it later once it
comes back with DT support.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
If the init / shutdown function of the phy moves out of dsps into the
phy driver, then dsps needs to call the callbacks of the phy driver to
ensure that this happens.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
The musb driver no longer uses procfs, so get rid of the proc_dir_entry
variable in struct musb.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>
If the descriptor is missing the reqeust is never unmapped. This patch
changes this and renames the cleanup label to unlock since there is no
cleanup done. The cleanup would revert the allocation of ressource (i.e.
this dma mapping) but it does not, it simply unlocks and returns.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
The cleanup in the error is missing the dma controller. The structure is
allocated at runtime and ux500 allocates even a little more than just
this struct. So cleanup!
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This patch removes is_dma_capable() and an ifdef in the init/exit path
around init/de-init of the dma_controller. Since we have the empty stubs
in the PIO code we can call it without gcc trouble. Earlier we had an
ifdef and the is_dma_capable() macro where gcc ignored the if (0) path
even that the function was not around :)
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Add a dma_controller_create() returning NULL so a few ifdefs can
dropped.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
The core code creates a controller and immediately after that it calls
the ->start() callback. This one might drop an error but nobody cares.
The same thing happens in the destroy corner: First ->stop() called
followed by destroy callback. So why not merge those two into the same
function since there is no difference.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This check is hardly required and alas is wrong. 'c' might be NULL but
the chances are low that 'controller' after the container_of() becomes
NULL.
Since no other DMA implementation is doing that and musb-core does not
call it with a NULL pointer it can dropped.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
The ifdef reads somehow better than an ifndef
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
None of these USB files need idr.h, so don't include it.
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Reviewed-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
some MUSB incarnations, such as those governed by
omap2430.c and tusb6010.c, have three resources, not
two.
Fix the bug created by commit 09fc7d2 (usb: musb:
fix incorrect usage of resource pointer) where only
two of the three resources would be passed to musb_core.c
[ balbi@ti.com : add tusb6010.c to original patch ]
Tested-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Pull trivial tree updates from Jiri Kosina:
"The usual stuff from trivial tree"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (34 commits)
treewide: relase -> release
Documentation/cgroups/memory.txt: fix stat file documentation
sysctl/net.txt: delete reference to obsolete 2.4.x kernel
spinlock_api_smp.h: fix preprocessor comments
treewide: Fix typo in printk
doc: device tree: clarify stuff in usage-model.txt.
open firmware: "/aliasas" -> "/aliases"
md: bcache: Fixed a typo with the word 'arithmetic'
irq/generic-chip: fix a few kernel-doc entries
frv: Convert use of typedef ctl_table to struct ctl_table
sgi: xpc: Convert use of typedef ctl_table to struct ctl_table
doc: clk: Fix incorrect wording
Documentation/arm/IXP4xx fix a typo
Documentation/networking/ieee802154 fix a typo
Documentation/DocBook/media/v4l fix a typo
Documentation/video4linux/si476x.txt fix a typo
Documentation/virtual/kvm/api.txt fix a typo
Documentation/early-userspace/README fix a typo
Documentation/video4linux/soc-camera.txt fix a typo
lguest: fix CONFIG_PAE -> CONFIG_x86_PAE in comment
...
These changes are all driver specific and cross over between arm-soc
contents and some other subsystem, in these cases cpufreq, crypto,
dma, pinctrl, mailbox and usb, and the subsystem owners agreed to
have these changes merged through arm-soc. As we proceed to untangle
the dependencies between platform code and driver code, the amount of
changes in this category is fortunately shrinking, for 3.11 we have
16 branches here and 101 non-merge changesets, the majority of which
are for the stedma40 dma engine driver used in the ux500 platform.
Cleaning up that code touches multiple subsystems, but gets rid
of the dependency in the end.
The mailbox code moved out from mach-omap2 to drivers/mailbox
is an intermediate step and is still omap specific at the moment.
Patches exist to generalize the subsystem and add other drivers
with the same API, but those did not make it for 3.11.
Conflicts:
* In cpu-db8500.c results from the removal of the u8500_of_init_devices
function in combination with the split of u8500_auxdata_lookup.
* In arch/arm/mach-omap2/devices.c, the includes got reshuffled.
we need to keep linux/wl12xx.h and linux/platform_data/mailbox-omap.h.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.12 (GNU/Linux)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=mJsI
-----END PGP SIGNATURE-----
Merge tag 'drivers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC driver specific changes from Arnd Bergmann:
"These changes are all driver specific and cross over between arm-soc
contents and some other subsystem, in these cases cpufreq, crypto,
dma, pinctrl, mailbox and usb, and the subsystem owners agreed to have
these changes merged through arm-soc.
As we proceed to untangle the dependencies between platform code and
driver code, the amount of changes in this category is fortunately
shrinking, for 3.11 we have 16 branches here and 101 non-merge
changesets, the majority of which are for the stedma40 dma engine
driver used in the ux500 platform. Cleaning up that code touches
multiple subsystems, but gets rid of the dependency in the end.
The mailbox code moved out from mach-omap2 to drivers/mailbox is an
intermediate step and is still omap specific at the moment. Patches
exist to generalize the subsystem and add other drivers with the same
API, but those did not make it for 3.11."
* tag 'drivers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (101 commits)
crypto: ux500: use dmaengine_submit API
crypto: ux500: use dmaengine_prep_slave_sg API
crypto: ux500: use dmaengine_device_control API
crypto: ux500/crypt: add missing __iomem qualifiers
crypto: ux500/hash: add missing static qualifiers
crypto: ux500/hash: use readl on iomem addresses
dmaengine: ste_dma40: Declare memcpy config as static
ARM: ux500: Remove mop500_snowball_ethernet_clock_enable()
ARM: ux500: Correct the EN_3v3 regulator's on/off GPIO
ARM: ux500: Provide a AB8500 GPIO Device Tree node
gpio: rcar: fix gpio_rcar_of_table
gpio-rcar: Remove #ifdef CONFIG_OF around OF-specific sections
gpio-rcar: Reference core gpio documentation in the DT bindings
clk: exynos5250: Add enum entries for divider clock of i2s1 and i2s2
ARM: dts: Update Samsung I2S documentation
ARM: dts: add clock provider information for i2s controllers in Exynos5250
ARM: dts: add Exynos audio subsystem clock controller node
clk: samsung: register audio subsystem clocks using common clock framework
ARM: dts: use #include for all device trees for Samsung
pinctrl: s3c24xx: use correct header for chained_irq functions
...
it does not compile since 09fc7d ("usb: musb: fix incorrect usage of
resource pointer"). What makes me wonder most is if source of the
Tested-by tag :)
Acked-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
support for the DMA40. Now with MUSB and some platform
data removal.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.10 (GNU/Linux)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=rn7t
-----END PGP SIGNATURE-----
Merge tag 'ux500-dma40-for-arm-soc-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-stericsson into next/drivers
From Linus Walleij:
Second set of DMA40 changes: refactorings and device tree
support for the DMA40. Now with MUSB and some platform
data removal.
* tag 'ux500-dma40-for-arm-soc-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-stericsson:
dmaengine: ste_dma40: Fetch disabled channels from DT
dmaengine: ste_dma40: Fetch the number of physical channels from DT
ARM: ux500: Stop passing DMA platform data though AUXDATA
dmaengine: ste_dma40: Allow memcpy channels to be configured from DT
dmaengine: ste_dma40_ll: Replace meaningless register set with comment
dmaengine: ste_dma40: Convert data_width from register bit format to value
dmaengine: ste_dma40_ll: Use the BIT macro to replace ugly '(1 << x)'s
ARM: ux500: Remove recently unused stedma40_xfer_dir enums
dmaengine: ste_dma40: Replace ST-E's home-brew DMA direction defs with generic ones
ARM: ux500: Replace ST-E's home-brew DMA direction definition with the generic one
dmaengine: ste_dma40: Use the BIT macro to replace ugly '(1 << x)'s
ARM: ux500: Remove empty function u8500_of_init_devices()
ARM: ux500: Remove ux500-musb platform registation when booting with DT
usb: musb: ux500: add device tree probing support
usb: musb: ux500: attempt to find channels by name before using pdata
usb: musb: ux500: harden checks for platform data
usb: musb: ux500: take the dma_mask from coherent_dma_mask
usb: musb: ux500: move the MUSB HDRC configuration into the driver
usb: musb: ux500: move channel number knowledge into the driver
All function drivers are now converted to our new configfs-based
binding. Eventually this will help us getting rid of in-kernel
gadget drivers and only keep function drivers in the kernel.
MUSB was taught that it needs to be built for host-only and
device-only modes too. We had this support long ago but it
involved a ridiculous amount of ifdefs. Now we have a much
cleaner approach.
Samsung Exynos4 platform now implements HSIC support.
We're introducing support for AB8540 and AB9540 PHYs.
MUSB module reinsertion now works as expected, before we were
getting -EBUSY being returned by the resource checks done on
driver core.
DWC3 now has minimum support for TI's AM437x series of SoCs.
OMAP5 USB3 PHY learned one extra DPLL configuration values because
that PHY is reused in TI's DRA7xx devices.
We're introducing support for Faraday fotg210 UDCs.
Last, but not least, the usual set of non-critical fixes and cleanups
ranging from usage of platform_{get,set}_drvdata to lock improvements.
Signed-of-by: Felipe Balbi <balbi@ti.com>
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.12 (GNU/Linux)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=O9AH
-----END PGP SIGNATURE-----
Merge tag 'usb-for-v3.11' of git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb into usb-next
Felipe writes:
usb: patches for v3.11 merge window
All function drivers are now converted to our new configfs-based
binding. Eventually this will help us getting rid of in-kernel
gadget drivers and only keep function drivers in the kernel.
MUSB was taught that it needs to be built for host-only and
device-only modes too. We had this support long ago but it
involved a ridiculous amount of ifdefs. Now we have a much
cleaner approach.
Samsung Exynos4 platform now implements HSIC support.
We're introducing support for AB8540 and AB9540 PHYs.
MUSB module reinsertion now works as expected, before we were
getting -EBUSY being returned by the resource checks done on
driver core.
DWC3 now has minimum support for TI's AM437x series of SoCs.
OMAP5 USB3 PHY learned one extra DPLL configuration values because
that PHY is reused in TI's DRA7xx devices.
We're introducing support for Faraday fotg210 UDCs.
Last, but not least, the usual set of non-critical fixes and cleanups
ranging from usage of platform_{get,set}_drvdata to lock improvements.
Signed-of-by: Felipe Balbi <balbi@ti.com>
This patch will allow ux500-musb to be probed and configured solely from
configuration found in Device Tree.
Cc: Rob Herring <rob.herring@calxeda.com>
Cc: linux-usb@vger.kernel.org
Cc: devicetree-discuss@lists.ozlabs.org
Acked-by: Felipe Balbi <balbi@ti.com>
Acked-by: Fabio Baltieri <fabio.baltieri@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
If we can ever get to a state where we can solely search for DMA channels
by name, this will almost completely alleviate the requirement to pass
copious amounts of information though platform data. Here we take the
first step towards this. The next step will be to enable Device Tree
complete with name<->event_line mapping.
Cc: linux-usb@vger.kernel.org
Acked-by: Felipe Balbi <balbi@ti.com>
Acked-by: Fabio Baltieri <fabio.baltieri@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
In its current state, the ux500-musb driver uses platform data pointers
blindly with no prior checking. If no platform data pointer is passed
this will Oops the kernel. In this patch we ensure platform data and
board data are present prior to using them.
Cc: linux-usb@vger.kernel.org
Acked-by: Felipe Balbi <balbi@ti.com>
Acked-by: Fabio Baltieri <fabio.baltieri@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
The dma_mask will always be the same as the coherent_dma_mask, so let's
cut down on the platform_data burden and set it as such in the driver.
This also saves us from supporting it separately when we come to enable
this driver for Device Tree.
Cc: linux-usb@vger.kernel.org
Acked-by: Felipe Balbi <balbi@ti.com>
Acked-by: Fabio Baltieri <fabio.baltieri@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
The MUSB HDRC configuration never changes between each of the ux500
supported platforms, so there's little point passing it though platform
data. If we set it in the driver instead, we can make good use of it
when booting with either ATAGs or Device Tree.
Cc: linux-usb@vger.kernel.org
Acked-by: Felipe Balbi <balbi@ti.com>
Acked-by: Fabio Baltieri <fabio.baltieri@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
For all ux500 based platforms the maximum number of end-points are used.
Move this knowledge into the driver so we can relinquish the burden from
platform data. This also removes quite a bit of complexity from the driver
and will aid us when we come to enable the driver for Device Tree.
Cc: linux-usb@vger.kernel.org
Acked-by: Felipe Balbi <balbi@ti.com>
Acked-by: Fabio Baltieri <fabio.baltieri@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This patch attempts to fix the isochonour API in the musb host
driver. In particular, the urb->start_frame field should always be
set by the driver; it isn't an input parameter.
The simplest way to accomplish this is to treat all URBs as though the
URB_ISO_ASAP flag was set. This won't give the right behavior when an
underrun occurs, but I don't know enough about the musb driver to
handle that case.
Unfortunately, I have no way to test this change.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
very minor patch fixing the following build warning on
a debug message:
drivers/usb/musb/musb_host.c: In function ‘musb_host_rx’:
drivers/usb/musb/musb_host.c:1763:4: warning: format ‘%x’ \
expects argument of type ‘unsigned int’, but argument \
6 has type ‘dma_addr_t’ [-Wformat]
Signed-off-by: Felipe Balbi <balbi@ti.com>
Since highmem PIO URB handling was introduced in:
8e8a551 usb: musb: host: Handle highmem in PIO mode
when a URB is being handled it may happen that the static use_sg flag
was set by a previous URB with buffer in highmem. This leads to error
in handling the present URB.
Fix this by making the use_sg flag URB specific.
Cc: stable <stable@vger.kernel.org> # 3.7+
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Virupax Sadashivpetimath <virupax.sadashivpetimath@stericsson.com>
Signed-off-by: Fabio Baltieri <fabio.baltieri@linaro.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Various non functional coding style fixes on ux500_dma.c and
phy-ab8500-usb.c drivers.
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Maxime Coquelin <maxime.coquelin@st.com>
Signed-off-by: Fabio Baltieri <fabio.baltieri@linaro.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Host side dma support for ux500 is enabled by piggybacking on Inventra
dma support.
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Mian Yousaf Kaukab <mian.yousaf.kaukab@stericsson.com>
Signed-off-by: Fabio Baltieri <fabio.baltieri@linaro.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>
With the hcd is now a direct member of struct musb, we can now simply
eliminate the musb_to_hcd() macro. There aren't that many users left
anyway, as some where already fixed up when parts were factored out to
musb_host.c
Signed-off-by: Daniel Mack <zonque@gmail.com>
Acked-by: Peter Korsgaard <jacmet@sunsite.dk>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Initialize the host and gadget subsystems of the musb driver only when
the appropriate mode is selected from platform data, or device-tree
information, respectively.
Signed-off-by: Daniel Mack <zonque@gmail.com>
Acked-by: Peter Korsgaard <jacmet@sunsite.dk>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Define MUSB_PORT_MODE_{HOST,GADGET,DUAL_ROLE} and store the
platform-specified value in struct musb.
Note that MUSB_PORT_MODE_HOST has to be set to 1 in order to match
existing device tree bindings which are already documented but in fact
unusued. For information on the bindings, please refer to
Documentation/devicetree/bindings/usb/omap-usb.txt
Documentation/devicetree/bindings/usb/am33xx-usb.txt
Signed-off-by: Daniel Mack <zonque@gmail.com>
Acked-by: Peter Korsgaard <jacmet@sunsite.dk>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This patch re-introduces the bits that are necessary to use the musb
controller in host mode.
Signed-off-by: Daniel Mack <zonque@gmail.com>
Acked-by: Peter Korsgaard <jacmet@sunsite.dk>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This makes building the actual object files optional to the selected
mode, which saves users who know which kind of USB mode support they
need some binary size.
Unimplemented functions are stubbed out with static inline functions.
Signed-off-by: Daniel Mack <zonque@gmail.com>
Acked-by: Peter Korsgaard <jacmet@sunsite.dk>
Signed-off-by: Felipe Balbi <balbi@ti.com>
The musb struct is currently allocated along with the hcd, which makes
it difficult to build a driver that only acts as gadget device.
Fix this by allocating musb directly, and keep the hcd around as
a pointer in the musb struct.
struct hc_driver musb_hc_driver can now also be static to musb_host.c,
and the macro musb_to_hcd() is just a pointer dereferencer for now, and
will be eliminated later.
Signed-off-by: Daniel Mack <zonque@gmail.com>
Acked-by: Peter Korsgaard <jacmet@sunsite.dk>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This function has its only user in musb_virthub.c, so let's move it
there and make it static.
Signed-off-by: Daniel Mack <zonque@gmail.com>
Acked-by: Peter Korsgaard <jacmet@sunsite.dk>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This will be done from a more appropriate location and as it doesn't
work anyway, it can safely be removed before the other changes.
Signed-off-by: Daniel Mack <zonque@gmail.com>
Acked-by: Peter Korsgaard <jacmet@sunsite.dk>
Signed-off-by: Felipe Balbi <balbi@ti.com>
In particular, this introduces musb_host_resume_root_hub()and
musb_host_poke_root_hub() which will be stubbed out later.
Signed-off-by: Daniel Mack <zonque@gmail.com>
Acked-by: Peter Korsgaard <jacmet@sunsite.dk>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Let the function declarations live in the header files they belong to,
which makes it easier to stub them out later.
Signed-off-by: Daniel Mack <zonque@gmail.com>
Acked-by: Peter Korsgaard <jacmet@sunsite.dk>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This was related to an old bug on early versions
of TUSB6010 which we don't support anymore.
It's known to cause issues on several other
situations with more recent devices so we
better remove this flag now and come up
with a better workaround should one be deemed
necessary.
Signed-off-by: Felipe Balbi <balbi@ti.com>
We can't simply pass the resource pointer from our
device down to our children, otherwise module
reinsertion will not work as the resource will
continue to be marked as busy.
Fix it by building a proper struct resource for
our child musb device.
Tested-by: Dmitry Lifshitz <lifshitz@compulab.co.il>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Fix to return -ENOMEM in the devm_kzalloc() error handling
case instead of 0, as done elsewhere in this function.
Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Add the missing platform_device_put() before return from
omap2430_probe() in the error handling case.
Introduced by commit ca784be36c
(usb: start using the control module driver)
Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This patch removes the depends on USB from all config symbols in
drivers/usb/host/Kconfig and replace that with an if USB / endif block
as suggested by Alan Stern. Some source ... Kconfig lines have been
shuffled around to permit a better regroupment of the Kconfig files
depending on "config USB" item. No functionnal change is introduced.
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Florian Fainelli <florian@openwrt.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Here is the big Gadget & PHY pull request. Many of us have
been really busy lately getting multiple drivers to a better
position.
Since this pull request is so large, I will divide it in sections
so it's easier to grasp what's included.
- cleanups:
. UDC drivers no longer touch gadget->dev, that's now udc-core
responsibility
. Many more UDC drivers converted to usb_gadget_map/unmap_request()
. UDC drivers no longer initialize DMA-related fields from gadget's
device structure
. UDC drivers don't touch gadget.dev.driver directly
. UDC drivers don't assign gadget.dev.release directly
. Removal of some unused DMA_ADDR_INVALID
. Introduction of CONFIG_USB_PHY
. All phy drivers have been moved to drivers/usb/phy and renamed to
a common naming scheme
. Fix PHY layer so it never returns a NULL pointer, also fix all
callers to avoid using IS_ERR_OR_NULL()
. Sparse fixes all over the place
. drivers/usb/otg/ has been deleted
. Marvel drivers (mv_udc, ehci-mv, mv_otg and mv_u3d) improved clock
usage
- new features:
. UDC core now provides a generic way for tracking and reporting
UDC's state (not attached, resuming, suspended, addressed,
default, etc)
. twl4030-usb learned that it shouldn't be enabled during init
. Full DT support for DWC3 has been implemented
. ab8500-usb learned about pinctrl framework
. nop PHY learned about DeviceTree and regulators
. DWC3 learned about suspend/resume
. DWC3 can now be compiled in host-only and gadget-only (as well as
DRD) configurations
. UVC now enables streaming endpoint based on negotiated speed
. isp1301 now implements the PHY API properly
. configfs-based interface for gadget drivers which will lead to
the removal of all code which just combines functions together
to build functional gadget drivers.
. f_serial and f_obex were converted to new configfs interface while
maintaining old interface around.
- non-critical fixes:
. UVC gadget driver got fixes for Endpoint usage and stream calculation
. ab8500-usb fixed unbalanced clock and regulator API usage
. twl4030-usb got a fix for when OMAP3 is booted with cable connected
. fusb300_udc got a fix for DMA usage
. UVC got fixes for two assertions of the USB Video Class Compliance
specification revision 1.1
. build warning issues caused by recent addition of __must_check to
regulator API
These are all changes which deserve a mention, all other changes are related
to these one or minor spelling fixes and other similar tasks.
Signed-of-by: Felipe Balbi <balbi@ti.com>
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.12 (GNU/Linux)
iQIcBAABAgAGBQJRXG8GAAoJEIaOsuA1yqREJzYQAKMLW3J/TKTWS1DDuf7qMtMz
Ug6qChKZXgT1/QrNjsq2tx4jYIkNdSMtRKiUx0BnIptlUx6gM22gcsN8mXX/UJjC
FYAiWl+tYe85e9uayqqt+qVCZjTZCc7St4wQalugDHefvA7yCbiZpSaJRGlJMK+x
mePJ7MfrulDsYBXr0u+m2LOJ0qxMDi40k3/UN3aUu5yzrmBiRpVq1mySruvLwGFp
Pr6vBnprEc6bW5sRdUR4SICKLvLk5sHwHpvpkzDLYBIb/jXQwbfQri/HKeh4VMk8
trbsvHZyB7H8uuFsCHiBc6VtjcbZ4mxPUK+1PCq8hG077avdkm3ox0BERk9aRTeC
jg4mdpyWjgovwi882woPEQXNZoaAXpVDyI8tBRx92a+rGJjXSHhLQI+4Ffi4ZvzV
d+q1ZzrHxuzwa/BwcPETY76umXQqXWXg+ap1bHDY0RZFoPLdXMpl583NXGSn3gOD
dUlD0UlgYwb75333tRIPNQn3qOx0HVd6MlYPMNzl9t9c9qqfX78AYRny6ZucupRg
t9VZ6FO3D2yre9W7u3U3q2c9H7uSAKr/8xaNfvdsIWPncgvvYVIyE8MnR7AiHoPv
ZYESs/Gs6w9vUsHa9K4J16Ape7D3AMcGpXUoPUxTBHrwBexzt4j27VWtcL4ns/9r
0kcltUJ4Zq+PIjc7xgxe
=aF4r
-----END PGP SIGNATURE-----
Merge tag 'usb-for-v3.10' of git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb into usb-next
Felipe writes:
usb: patches for v3.10 merge window
Here is the big Gadget & PHY pull request. Many of us have
been really busy lately getting multiple drivers to a better
position.
Since this pull request is so large, I will divide it in sections
so it's easier to grasp what's included.
- cleanups:
. UDC drivers no longer touch gadget->dev, that's now udc-core
responsibility
. Many more UDC drivers converted to usb_gadget_map/unmap_request()
. UDC drivers no longer initialize DMA-related fields from gadget's
device structure
. UDC drivers don't touch gadget.dev.driver directly
. UDC drivers don't assign gadget.dev.release directly
. Removal of some unused DMA_ADDR_INVALID
. Introduction of CONFIG_USB_PHY
. All phy drivers have been moved to drivers/usb/phy and renamed to
a common naming scheme
. Fix PHY layer so it never returns a NULL pointer, also fix all
callers to avoid using IS_ERR_OR_NULL()
. Sparse fixes all over the place
. drivers/usb/otg/ has been deleted
. Marvel drivers (mv_udc, ehci-mv, mv_otg and mv_u3d) improved clock
usage
- new features:
. UDC core now provides a generic way for tracking and reporting
UDC's state (not attached, resuming, suspended, addressed,
default, etc)
. twl4030-usb learned that it shouldn't be enabled during init
. Full DT support for DWC3 has been implemented
. ab8500-usb learned about pinctrl framework
. nop PHY learned about DeviceTree and regulators
. DWC3 learned about suspend/resume
. DWC3 can now be compiled in host-only and gadget-only (as well as
DRD) configurations
. UVC now enables streaming endpoint based on negotiated speed
. isp1301 now implements the PHY API properly
. configfs-based interface for gadget drivers which will lead to
the removal of all code which just combines functions together
to build functional gadget drivers.
. f_serial and f_obex were converted to new configfs interface while
maintaining old interface around.
- non-critical fixes:
. UVC gadget driver got fixes for Endpoint usage and stream calculation
. ab8500-usb fixed unbalanced clock and regulator API usage
. twl4030-usb got a fix for when OMAP3 is booted with cable connected
. fusb300_udc got a fix for DMA usage
. UVC got fixes for two assertions of the USB Video Class Compliance
specification revision 1.1
. build warning issues caused by recent addition of __must_check to
regulator API
These are all changes which deserve a mention, all other changes are related
to these one or minor spelling fixes and other similar tasks.
Signed-of-by: Felipe Balbi <balbi@ti.com>
Fix last ab->phy.notifier call to use vbus_draw as notifier argument, as
that's used in ab8500_charger to control charging current.
Also drop a related TODO comment, and the additional
ux500_musb_set_vbus(musb, 0), as with this patch it was causing an
erratic behaviour of gadget ep0 state machine.
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Fabio Baltieri <fabio.baltieri@linaro.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>
avoid reading fifo rxcount is zero of fifo is empty, hence
read fifo only if rxcount is non-zero
Signed-off-by: Ravi Babu <ravibabu@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
The musb controller uses single bit defintion for both reset and
babble events. The babble event is valid only when controller is
active a-host, and hence print the babble message only when the
controller is active a-host.
Signed-off-by: Ravi Babu <ravibabu@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
MUSB controller cannot work in DMA mode with misaligned buffers,
switching in PIO mode.
HCD core has hooks that allow to override the default DMA
mapping and unmapping routines for host controllers that have
special DMA requirements, such as alignment constraints.
It is observed that work in PIO mode is slow and it's better
to align buffers properly before passing them to MUSB
This increased throughput 80->120 MBits/s over musb@omap4 with
USB Gigabit Ethernet adapter attached.
Some ideas are taken from ehci-tegra.c
Signed-off-by: Ruslan Bilovol <ruslan.bilovol@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
On some platform configurations (like OMAP3+twl4030) it's the platform
code that enables VBUS, not OTG transceiver, so call vbus platform
callback instead, it will then call the transceiver if needed.
This fixes a use case where USB cable is plugged first and gadget
driver is loaded later after that.
Signed-off-by: Grazvydas Ignotas <notasas@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
On USB_EVENT_ID event the musb glue enables VBUS by calling
omap2430_musb_set_vbus(musb, 1) that sets the session bit, but on
USB_EVENT_NONE reverse action is never made, and that breaks PM.
Disable VBUS on USB_EVENT_NONE to be sure musb session is ended
on cable unplug so that PM works.
Signed-off-by: Grazvydas Ignotas <notasas@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
fix the following sparse warning:
drivers/usb/musb/ux500_dma.c:60:6: warning: symbol 'ux500_dma_callback' was not declared. Should it be static?
Signed-off-by: Felipe Balbi <balbi@ti.com>
VBUS_ERROR is a serious error that the driver often doesn't recover from
in my tests, so we should at least inform the user about it.
Signed-off-by: Grazvydas Ignotas <notasas@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Some musb glue drivers use gadget_driver pointer to know if any gadget
drivers are loaded at some moment and base further decisions on it,
like to do runtime suspend/resume or not. Right now the pointer is
left alone on stop and OMAP musb glue later does wrong runtime_pm
decisions because of it.
Clear the gadget_driver pointer on remove, it's invalid after stop
anyway.
Signed-off-by: Grazvydas Ignotas <notasas@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
As the usb transceiver driver usually starts first, it should already
have default_a variable set according to ID pin state, so don't
override it. In case default_a was not changed by trasceiver, it will
default to 0 and this code will work as before.
Signed-off-by: Grazvydas Ignotas <notasas@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
udc-core learned that it shouldn't use invalid pointers
when unloading a gadget driver.
net2272 and net2280 got a fix for a regression caused by
the udc_start/udc_stop conversion.
We're defining a static inline no-op for otg_ulpi_create()
to prevent build errors when that driver isn't enabled.
FunctionFS got a fix for an off-by-one error when binding
and unbinding instances of FunctionFS.
MUSB learned that it shouldn't try to unmap buffers which
weren't previously mapped.
f_rndis got a fix for a possible NULL pointer dereference
in a debugging message code.
MUSB's DA8xx glue layer got a build fix due to a typo.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.12 (GNU/Linux)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=wGIr
-----END PGP SIGNATURE-----
Merge tag 'fixes-for-v3.9-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb into usb-linus
Felipe writes:
usb: fixes for v3.9-rc4
udc-core learned that it shouldn't use invalid pointers
when unloading a gadget driver.
net2272 and net2280 got a fix for a regression caused by
the udc_start/udc_stop conversion.
We're defining a static inline no-op for otg_ulpi_create()
to prevent build errors when that driver isn't enabled.
FunctionFS got a fix for an off-by-one error when binding
and unbinding instances of FunctionFS.
MUSB learned that it shouldn't try to unmap buffers which
weren't previously mapped.
f_rndis got a fix for a possible NULL pointer dereference
in a debugging message code.
MUSB's DA8xx glue layer got a build fix due to a typo.
Update irq handling code to notify all possible link status changes of
AB8500 and AB8505 to the ux500-musb glue driver. The additional event
codes will be used for pm-runtime implementation, and are defined in a
separate ux500-specific header.
This also modify the irq registration code to use devm_* helpers and
drop all non necessary fail path code.
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Fabio Baltieri <fabio.baltieri@linaro.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Add transceiver notifier event handling to the ux500 driver to set vbus
on specific transceiver events.
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Fabio Baltieri <fabio.baltieri@linaro.org>
[ balbi@ti.com: fix build error due to missing
otg_state_string() ]
Signed-off-by: Felipe Balbi <balbi@ti.com>
Add ux500_musb_set_vbus() implementation for ux500.
This is based on the version originally developed inside ST-Ericsson.
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Fabio Baltieri <fabio.baltieri@linaro.org>
[ balbi@ti.com: fix a build error due to
missing otg_state_string() ]
Signed-off-by: Felipe Balbi <balbi@ti.com>
PHY layer no longer returns NULL. It will
return -ENXIO when PHY layer isn't enabled
and we can use that to bail out instead of
request a probe deferral.
Signed-off-by: Felipe Balbi <balbi@ti.com>
Some PHYs load too early (twl4030) making omap glue to miss cable connect events
if the board is booted with cable connected. So adding usb_phy_init in
omap2430_musb_init lets PHYs to report events once glue is ready.
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
No functional change. otg_set_vbus is already protected so removed the
check before calling otg_set_vbus.
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
No functional change. Replace *_* with *-* in property names of otg to
follow the general convention.
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
there are no more users of CONFIG_USB_OTG_UTILS
left in tree, we can remove it just fine.
[ kishon@ti.com : fixed a linking error due
to original patch forgetting to change
drivers/usb/Makefile ]
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
all other functions under drivers/usb/ start
with usb_, let's do the same thing.
This patch is in preparation for moving otg_state_string
to usb-common.c and deleting otg.c completely.
Signed-off-by: Felipe Balbi <balbi@ti.com>
CONFIG_USB_MUSB_DEBUG option was removed in
5c8a86e usb: musb: drop unneeded musb_debug trickery
to cleanup the code from driver specific debug facilities. This patch
drops the last references to the musb debug config option,
unconditionally enabling all debug code paths, thus letting that code
being dropped at compile time if not needed.
Signed-off-by: Fabio Baltieri <fabio.baltieri@linaro.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Fix the following compile warning:
drivers/usb/musb/musb_gadget.c: In function ‘rxstate’:
drivers/usb/musb/musb_gadget.c:714:22: warning: comparison of distinct pointer types lacks a cast [enabled by default]
Signed-off-by: Felipe Balbi <balbi@ti.com>
if CONFIG_OF is disabled, np will be unused
and that will give us a compile warning. This
patch just avoids it.
Signed-off-by: Felipe Balbi <balbi@ti.com>
Fix the following compile warnings:
drivers/usb/musb/ux500_dma.c: In function ‘ux500_configure_channel’:
drivers/usb/musb/ux500_dma.c:96:2: warning: format ‘%x’ expects argument of type ‘unsigned int’, but argument 6 has type ‘dma_addr_t’ [-Wformat]
drivers/usb/musb/ux500_dma.c: In function ‘ux500_dma_is_compatible’:
drivers/usb/musb/ux500_dma.c:195:4: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
Signed-off-by: Felipe Balbi <balbi@ti.com>
<linux/sizes.h> is the header defining SZ_4
and SZ_16M, we shouldn't depend on indirect
inclusion so let's explicitly include it.
Signed-off-by: Felipe Balbi <balbi@ti.com>
those two glues are still including <mach/>
headers and no active developement has been
going on those glues for quite some time.
Apparently, for da8xx glue, only initial commit
3ee076de (usb: musb: introduce DA8xx/OMAP-L1x
glue layer) has been tested. All other patches
seem to have been compile-tested only.
For davinci glue layer, last real commit dates
back from 2010, with commit f405387 (USB: MUSB:
fix kernel WARNING/oops when unloading module
in OTG mode).
Signed-off-by: Felipe Balbi <balbi@ti.com>
MUSB still needs lots of work on the DMA part
if we want to enable multiple DMA engines on
a multiplatform kernel. Meanwhile, we're forcing
PIO-only so that we, at least, have a working
driver.
Signed-off-by: Felipe Balbi <balbi@ti.com>
Those comments haven't been updated for a long
time, so much that they don't make sense anymore.
Best to remove them.
Signed-off-by: Felipe Balbi <balbi@ti.com>
this will make sure that request_memory_region() will
be called and that we don't need to manually call
iounmap() on ->remove().
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>
musb does not use DMA buffer for ep0 but it uses the same giveback
function *musb_g_giveback* for all endpoints (*musb_g_ep0_giveback* calls
*musb_g_giveback*). So for ep0 case request.dma will be '0'
and will result in kernel OOPS if tried to *unmap_dma_buffer* for requests in
ep0. Fixed it by doing *unmap_dma_buffer* only for valid DMA addr and
checking that musb_ep->dma is valid when unmapping.
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
when making commit e574d57 (usb: musb: fix
compile warning) I forgot to git add this
part of the patch which ended up introducing
a possible build error.
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Fix the following sparse warning:
drivers/usb/musb/omap2430.c:54:33: warning: symbol '_glue' was not \
declared. Should it be static?
Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Commit 80ab72e1 (usb: musb: omap2430: fix the readiness check
in omap_musb_mailbox) made the check incorrect, as we will lose the
glue/link status during the normal built-in probe order (twl4030_usb is
probed after musb omap2430, but before musb core is ready).
As a result, if you boot with USB cable on and load g_ether, the
connection does not work as the code thinks the cable is off and the
phy gets powered down immediately. This is a major regression in 3.9-rc1.
So the proper check should be: exit if _glue is NULL, but if it's
initialized we memorize the status, and then check if the musb core
is ready.
Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Felipe Balbi <balbi@ti.com>
When running 100 randconfig iterations, I found
the following warning:
drivers/usb/musb/musb_core.c: In function ‘musb_init_controller’:
drivers/usb/musb/musb_core.c:1981:1: warning: label ‘fail5’ defined \
but not used [-Wunused-label]
this patch fixes it by removing the unnecessary
ifdef CONFIG_SYSFS.
Signed-off-by: Felipe Balbi <balbi@ti.com>
those are quite unnecessary, the only thing
we need to be careful about is USB_OTG_UTILS
which get properly selected by PHY drivers.
For now, MUSB will select only USB_OTG_UTILS
until we add stubs for the cases when PHY
layer isn't enabled.
Signed-off-by: Felipe Balbi <balbi@ti.com>
Currently it is possible to have:
USB_MUSB_OMAP2PLUS=m
TWL4030_USB=y
which would result compile time error due to missing symbols.
With this change USB_MUSB_OMAP2PLUS and TWL4030_USB will be in sync.
Reported-by: Vincent Stehle <v-stehle@ti.com>
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Here's the big USB merge for 3.9-rc1
Nothing major, lots of gadget fixes, and of course, xhci stuff.
All of this has been in linux-next for a while, with the exception of
the last 3 patches, which were reverts of patches in the tree that
caused problems, they went in yesterday.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2.0.19 (GNU/Linux)
iEYEABECAAYFAlEmZ/kACgkQMUfUDdst+ylEhwCgyM0JEOgLuW7M8D+oNcitZn51
g7oAniD0IkLG8RCB8plLj+82AvthalCo
=bHSs
-----END PGP SIGNATURE-----
Merge tag 'usb-3.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB patches from Greg Kroah-Hartman:
"Here's the big USB merge for 3.9-rc1
Nothing major, lots of gadget fixes, and of course, xhci stuff.
All of this has been in linux-next for a while, with the exception of
the last 3 patches, which were reverts of patches in the tree that
caused problems, they went in yesterday."
* tag 'usb-3.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (190 commits)
Revert "USB: EHCI: make ehci-vt8500 a separate driver"
Revert "USB: EHCI: make ehci-orion a separate driver"
Revert "USB: update host controller Kconfig entries"
USB: update host controller Kconfig entries
USB: EHCI: make ehci-orion a separate driver
USB: EHCI: make ehci-vt8500 a separate driver
USB: usb-storage: unusual_devs update for Super TOP SATA bridge
USB: ehci-omap: Fix autoloading of module
USB: ehci-omap: Don't free gpios that we didn't request
USB: option: add Huawei "ACM" devices using protocol = vendor
USB: serial: fix null-pointer dereferences on disconnect
USB: option: add Yota / Megafon M100-1 4g modem
drivers/usb: add missing GENERIC_HARDIRQS dependencies
USB: storage: properly handle the endian issues of idProduct
testusb: remove all mentions of 'usbfs'
usb: gadget: imx_udc: make it depend on BROKEN
usb: omap_control_usb: fix compile warning
ARM: OMAP: USB: Add phy binding information
ARM: OMAP2: MUSB: Specify omap4 has mailbox
ARM: OMAP: devices: create device for usb part of control module
...
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.
Mostly fixes all over which weren't urgent enough for
the late -rc cycle.
There is a Double Buffering fix for Host Mode TX,
a dependency fix for the transceiver driver, some
fixes to the error path and a fix for the use of
omap_musb_maibox.
Other than these fixes, there a removal duplicate
headers from the dsps glue layer and removal of
redundant assignments in omap2430_probe().
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.12 (GNU/Linux)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=dDY3
-----END PGP SIGNATURE-----
Merge tag 'musb-for-v3.9' of git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb into usb-next
Felipe writes:
usb: musb: patches for v3.9 merge window
Mostly fixes all over which weren't urgent enough for
the late -rc cycle.
There is a Double Buffering fix for Host Mode TX,
a dependency fix for the transceiver driver, some
fixes to the error path and a fix for the use of
omap_musb_maibox.
Other than these fixes, there a removal duplicate
headers from the dsps glue layer and removal of
redundant assignments in omap2430_probe().
The OMAP glue has been modified to 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>
New PHY lib APIs like usb_add_phy_dev() and devm_usb_get_phy_dev() are
used in MUSB (OMAP), in order to make use of the binding information
provided in the board file (of OMAP platforms).
All the platforms should be modified similar to this to add and get the
PHY.
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Start using the control module driver for powering on the PHY and for
writing to the mailbox instead of writing to the control module
registers on their own.
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Convert all uses of devm_request_and_ioremap() to the newly introduced
devm_ioremap_resource() which provides more consistent error handling.
devm_ioremap_resource() provides its own error messages so all explicit
error messages can be removed from the failure code paths.
Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Acked-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch fixes the following:
WARNING: vmlinux.o(.text+0x1e709c): Section mismatch in reference from the funct
ion dma_controller_create() to the function .init.text:cppi_controller_start()
The function dma_controller_create() references
the function __init cppi_controller_start().
This is often because dma_controller_create lacks a __init
annotation or the annotation of cppi_controller_start is wrong.
This warning is there due to the deficiency in the commit 07a67bbb (usb: musb:
Make dma_controller_create __devinit).
Since the start() method is only called from musb_init_controller() which is
not annotated, drop '__init' annotation from cppi_controller_start() and also
cppi_pool_init() since it gets called from that function, to avoid another
section mismatch warning...
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Cc: stable@vger.kernel.org # 3.7+
Signed-off-by: Felipe Balbi <balbi@ti.com>
Commit 00a0b1d58a (usb: musb: omap: Add device
tree support for omap musb glue) assigns result of devm_kzalloc() call to
the 'config' variable but then checks for NULL the 'data' variable (already
checked after previous call). Thus we risk a kernel oops further when data
pointed by 'config' is written to by subsequent of_property_read_u32() calls
iff the allocation happens to fail...
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This patch let glue driver return -EPROBE_DEFER if the transceiver
is not readly, so we can support defer probe on musb to fix the
below error on 3.7-rc5 if transceiver drivers are built as module:
[ 19.052490] unable to find transceiver of type USB2 PHY
[ 19.072052] HS USB OTG: no transceiver configured
[ 19.076995] musb-hdrc musb-hdrc.0.auto: musb_init_controller failed with status -19
[ 19.089355] musb-hdrc: probe of musb-hdrc.0.auto rejects match -19
[ 19.096771] driver: 'musb-omap2430': driver_bound: bound to device 'musb-omap2430'
[ 19.105194] bus: 'platform': really_probe: bound device musb-omap2430 to driver musb-omap2430
[ 19.174407] bus: 'platform': add driver twl4030_usb
[ 19.179656] bus: 'platform': driver_probe_device: matched device twl4030_usb with driver twl4030_usb
[ 19.202270] bus: 'platform': really_probe: probing driver twl4030_usb with device twl4030_usb
[ 19.214172] twl4030_usb twl4030_usb: HW_CONDITIONS 0xc0/192; link 3
[ 19.239624] musb-omap2430 musb-omap2430: musb core is not yet ready
[ 19.246765] twl4030_usb twl4030_usb: Initialized TWL4030 USB module
[ 19.254516] driver: 'twl4030_usb': driver_bound: bound to device 'twl4030_usb'
[ 19.263580] bus: 'platform': really_probe: bound device twl4030_usb to driver twl4030_usb
Cc: Sebastian Andrzej Siewior <sebastian@breakpoint.cc>
Cc: <stable@vger.kernel.org> v3.8
Signed-off-by: Ming Lei <ming.lei@canonical.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
In the fail1~fail5 failure path, pm_runtime_disable() should
be called to avoid 'Unbalanced pm_runtime_enable' error in
next probe() which may be triggered by defer probe or next
'modprobe musb_hdrc'.
Cc: Sebastian Andrzej Siewior <sebastian@breakpoint.cc>
Cc: <stable@vger.kernel.org> v3.8
Signed-off-by: Ming Lei <ming.lei@canonical.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Whenever an URB is programmed for transfer, the TXFIFO
is flushed. This results in valid packets of the
previous transfer to get flushed when double buffering
is enabled (The MUSB_TXCSR_FIFONOTEMPTY bit in TXCSR
is set indicating that a packet in the FIFO is yet to be sent)
For ex:- In Host mode Audio, noise is heard in the headset
when double buffering is enabled on the ISO endpoint.
The fifo flush is removed for double buffering case.
The fifo is now flushed only in cases of error or when
aborting a transfer.
Also, In Host MSC case, data toggle errors are seen when double
buffering is enabled on the bulk endpoint. Whenever an URB is
programmed for transfer, the data toggle is set manually
resulting in data toggle errors on the bus. Leave the data
toggle handling upto the hardware in the double buffering case.
Signed-off-by: supriya karanth <supriya.karanth@stericsson.com>
Signed-off-by: Praveena NADAHALLY <praveen.nadahally@stericsson.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Commit 00a0b1d58a (usb: musb: omap: Add device
tree support for omap musb glue) added assignments of the 'ret' variable to
-ENOMEM on *some* error paths of the calls to devm_kzalloc(), while that
variable was already pre-initialized for to that value, so these assignments
were completely redundant. Kill them, fixing overindented string, while at it.
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This patch converts the module to use clk_prepare_enable and
clk_disable_unprepare variants as required by common clock framework.
Without this the system crash during probe function.
Cc: <stable@vger.kernel.org> # v3.7 v3.8
Signed-off-by: Fabio Baltieri <fabio.baltieri@linaro.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>
The "mult" factor is not updated properly for the can_bulk_split()
case.
The AUTOSET bit in the TXCSR is not being set if the "mult"
factor is greater than 1 for the High Bandwidth ISO case.
But the "mult" factor is also greater than 1 in case of Full speed
bulk transfers with the packet splitting in TXMAXP register
enabled with can_bulk_split().
Without the AUTOSET the DMA transfers will not progress in mode1
[ balbi@ti.com : fix braces placement ]
Signed-off-by: supriya karanth <supriya.karanth@stericsson.com>
Signed-off-by: Praveena NADAHALLY <praveen.nadahally@stericsson.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>
The TXMAXP register is not set correctly for full speed bulk case
when the can_bulk_split() is used. Without this PIO transfers will
not take place correctly
The "mult" factor needs to be updated correctly for the
can_bulk_split() case
The AUTOSET bit in the TXCSR is not being set if the "mult"
factor is greater than 0 for the High Bandwidth ISO case.
But the "mult" factor is also greater than 0 in case of Full speed
bulk transfers with the packet splitting in TXMAXP register
Without the AUTOSET the DMA transfers will not progress in mode1
[ balbi@ti.com : add braces to both branches ]
Signed-off-by: supriya karanth <supriya.karanth@stericsson.com>
Signed-off-by: Praveena NADAHALLY <praveen.nadahally@stericsson.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Here is the first set of fixes for v3.8-rc cycle.
There is a build fix for musb's dsps glue layer caused
by some header cleanup on the OMAP tree.
Marvel's USB drivers got a fix up for clk API usage
switching over to clk_prepare() calls.
u_serial has a bug fix for a missing wake_up() which
would make gs_cleanup() wait forever for gs_close()
to finish.
A minor bug fix on dwc3's debugfs interface which
would make us read wrong addresses when dumping
all registers.
dummy_hcd learned how to enumerate g_multi.
s3c-hsotg now understands that we shouldn't kfree()
memory allocated with devm_*.
Other than that, there are a bunch of other minor fixes
on renesas_usbhs, tcm_usb_gadget and amd5536udc.
All patches have been pending on mailing for many weeks
and shouldn't cause any problems.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.12 (GNU/Linux)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=UsKi
-----END PGP SIGNATURE-----
Merge tag 'fixes-for-v3.8-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb into usb-linus
Felipe says:
usb: fixes for v3.8-rc2
Here is the first set of fixes for v3.8-rc cycle.
There is a build fix for musb's dsps glue layer caused
by some header cleanup on the OMAP tree.
Marvel's USB drivers got a fix up for clk API usage
switching over to clk_prepare() calls.
u_serial has a bug fix for a missing wake_up() which
would make gs_cleanup() wait forever for gs_close()
to finish.
A minor bug fix on dwc3's debugfs interface which
would make us read wrong addresses when dumping
all registers.
dummy_hcd learned how to enumerate g_multi.
s3c-hsotg now understands that we shouldn't kfree()
memory allocated with devm_*.
Other than that, there are a bunch of other minor fixes
on renesas_usbhs, tcm_usb_gadget and amd5536udc.
All patches have been pending on mailing for many weeks
and shouldn't cause any problems.
The {read,write}s{b,w,l} operations are not defined by all architectures
and are being removed from the asm-generic/io.h interface.
This patch replaces the usage of these string functions in the musb
accessors with io{read,write}{8,16,32}_rep calls instead.
Signed-off-by: Matthew Leach <matthew@mattleach.net>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Cc: Felipe Balbi <balbi@ti.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Ben Herrenschmidt <benh@kernel.crashing.org>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
The {read,write}s{b,w,l} operations are not defined by all architectures
and are being removed from the asm-generic/io.h interface.
This patch replaces the usage of these string functions in the tusb6010
accessors with io{read,write}{8,16,32}_rep calls instead.
Signed-off-by: Matthew Leach <matthew@mattleach.net>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Cc: Felipe Balbi <balbi@ti.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Ben Herrenschmidt <benh@kernel.crashing.org>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This branch contains a largeish set of updates of power management and
clock setup. The bulk of it is for OMAP/AM33xx platforms, but also a
few around hotplug/suspend/resume on Exynos.
It includes a split-up of some of the OMAP clock data into separate
files which adds to the diffstat, but gross delta is fairly reasonable.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.11 (GNU/Linux)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=h2Qo
-----END PGP SIGNATURE-----
Merge tag 'pm-merge' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC power management and clock changes from Olof Johansson:
"This branch contains a largeish set of updates of power management and
clock setup. The bulk of it is for OMAP/AM33xx platforms, but also a
few around hotplug/suspend/resume on Exynos.
It includes a split-up of some of the OMAP clock data into separate
files which adds to the diffstat, but gross delta is fairly reasonable."
* tag 'pm-merge' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (60 commits)
ARM: OMAP: Move plat-omap/dma-omap.h to include/linux/omap-dma.h
ASoC: OMAP: mcbsp fixes for enabling ARM multiplatform support
watchdog: OMAP: fixup for ARM multiplatform support
ARM: EXYNOS: Add flush_cache_all in suspend finisher
ARM: EXYNOS: Remove scu_enable from cpuidle
ARM: EXYNOS: Fix soft reboot hang after suspend/resume
ARM: EXYNOS: Add support for rtc wakeup
ARM: EXYNOS: fix the hotplug for Cortex-A15
ARM: OMAP2+: omap_device: Correct resource handling for DT boot
ARM: OMAP2+: hwmod: Add possibility to count hwmod resources based on type
ARM: OMAP2+: hwmod: Add support for per hwmod/module context lost count
ARM: OMAP2+: PRM: initialize some PRM functions early
ARM: OMAP2+: voltage: fixup oscillator handling when CONFIG_PM=n
ARM: OMAP4: USB: power down MUSB PHY during boot
ARM: OMAP2+: clock: Cleanup !CONFIG_COMMON_CLK parts
ARM: OMAP2xxx: clock: drop obsolete clock data
ARM: OMAP2: clock: Cleanup !CONFIG_COMMON_CLK parts
ARM: OMAP3+: DPLL: drop !CONFIG_COMMON_CLK sections
ARM: AM33xx: clock: drop obsolete clock data
ARM: OMAP3xxx: clk: drop obsolete clock data
...
Commit 5c8a86e10a (usb: musb: drop unneeded
musb_debug trickery) erroneously removed '\n' from the driver's banner.
Concatenate all the banner substrings while adding it back...
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Cc: stable@vger.kernel.org # 3.0+
Signed-off-by: Felipe Balbi <balbi@ti.com>
"54db6ee ARM: OMAP2+: Introduce local usb.h" moved control module bit
definitions from plat/usb.h (which dsps glue was using) to a local
header in mach-omap2. And in parallel,
"c68bb4c usb: musb: dsps: control module handling (quirk)" added
control module handling capability to dsps glue driver that used
those control module bit definitions.
Integration of above two changes would cause build error in musb dsps
glue driver (they go through different trees upstream) as is seen now
in linux-next. Fix it by adding necessary definitions in dsps glue
driver.
Signed-off-by: Afzal Mohammed <afzal@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This is a collection of header file cleanups, mostly for OMAP and AT91,
that keeps moving the platforms in the direction of multiplatform by
removing the need for mach-dependent header files used in drivers and
other places.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.11 (GNU/Linux)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=aggA
-----END PGP SIGNATURE-----
Merge tag 'headers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC Header cleanups from Olof Johansson:
"This is a collection of header file cleanups, mostly for OMAP and
AT91, that keeps moving the platforms in the direction of
multiplatform by removing the need for mach-dependent header files
used in drivers and other places."
Fix up mostly trivial conflicts as per Olof.
* tag 'headers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (106 commits)
ARM: OMAP2+: Move iommu/iovmm headers to platform_data
ARM: OMAP2+: Make some definitions local
ARM: OMAP2+: Move iommu2 to drivers/iommu/omap-iommu2.c
ARM: OMAP2+: Move plat/iovmm.h to include/linux/omap-iommu.h
ARM: OMAP2+: Move iopgtable header to drivers/iommu/
ARM: OMAP: Merge iommu2.h into iommu.h
atmel: move ATMEL_MAX_UART to platform_data/atmel.h
ARM: OMAP: Remove omap_init_consistent_dma_size()
arm: at91: move at91rm9200 rtc header in drivers/rtc
arm: at91: move reset controller header to arm/arm/mach-at91
arm: at91: move pit define to the driver
arm: at91: move at91_shdwc.h to arch/arm/mach-at91
arm: at91: move board header to arch/arm/mach-at91
arn: at91: move at91_tc.h to arch/arm/mach-at91
arm: at91 move at91_aic.h to arch/arm/mach-at91
arm: at91 move board.h to arch/arm/mach-at91
arm: at91: move platfarm_data to include/linux/platform_data/atmel.h
arm: at91: drop machine defconfig
ARM: OMAP: Remove NEED_MACH_GPIO_H
ARM: OMAP: Remove unnecessary mach and plat includes
...
enabled. Unfortunately the DMA header patch had to be redone
to avoid adding new multiplatform specific include paths, the
other patches are just trivial compile fixes.
Note that this does not yet contain the necessary Kconfig
changes as we are still waiting for some drivers to get
fixed up first.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.12 (GNU/Linux)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=w+UN
-----END PGP SIGNATURE-----
Merge tag 'tags/omap-for-v3.8/cleanup-multiplatform-no-clock-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into next/pm2
From Tony Lindgren:
Remaining patches to allow omap2+ to build with multiplatform
enabled. Unfortunately the DMA header patch had to be redone
to avoid adding new multiplatform specific include paths, the
other patches are just trivial compile fixes.
Note that this does not yet contain the necessary Kconfig
changes as we are still waiting for some drivers to get
fixed up first.
* tag 'tags/omap-for-v3.8/cleanup-multiplatform-no-clock-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
ARM: OMAP: Move plat-omap/dma-omap.h to include/linux/omap-dma.h
ASoC: OMAP: mcbsp fixes for enabling ARM multiplatform support
watchdog: OMAP: fixup for ARM multiplatform support
Conflicts due to surrounding changes in:
arch/arm/mach-omap2/omap_hwmod_2420_data.c
arch/arm/mach-omap2/omap_hwmod_2430_data.c
Signed-off-by: Olof Johansson <olof@lixom.net>
Based on earlier discussions[1] we attempted to find a suitable
location for the omap DMA header in commit 2b6c4e73 (ARM: OMAP:
DMA: Move plat/dma.h to plat-omap/dma-omap.h) until the conversion
to dmaengine is complete.
Unfortunately that was before I was able to try to test compile
of the ARM multiplatform builds for omap2+, and the end result
was not very good.
So I'm creating yet another all over the place patch to cut the
last dependency for building omap2+ for ARM multiplatform. After
this, we have finally removed the driver dependencies to the
arch/arm code, except for few drivers that are being worked on.
The other option was to make the <plat-omap/dma-omap.h> path
to work, but we'd have to add some new header directory to for
multiplatform builds.
Or we would have to manually include arch/arm/plat-omap/include
again from arch/arm/Makefile for omap2+.
Neither of these alternatives sound appealing as they will
likely lead addition of various other headers exposed to the
drivers, which we want to avoid for the multiplatform kernels.
Since we already have a minimal include/linux/omap-dma.h,
let's just use that instead and add a note to it to not
use the custom omap DMA functions any longer where possible.
Note that converting omap DMA to dmaengine depends on
dmaengine supporting automatically incrementing the FIFO
address at the device end, and converting all the remaining
legacy drivers. So it's going to be few more merge windows.
[1] https://patchwork.kernel.org/patch/1519591/#
cc: Russell King <linux@arm.linux.org.uk>
cc: Kevin Hilman <khilman@ti.com>
cc: "Benoît Cousson" <b-cousson@ti.com>
cc: Herbert Xu <herbert@gondor.apana.org.au>
cc: "David S. Miller" <davem@davemloft.net>
cc: Vinod Koul <vinod.koul@intel.com>
cc: Dan Williams <djbw@fb.com>
cc: Mauro Carvalho Chehab <mchehab@infradead.org>
cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
cc: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
cc: David Woodhouse <dwmw2@infradead.org>
cc: Kyungmin Park <kyungmin.park@samsung.com>
cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
cc: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
cc: Hans Verkuil <hans.verkuil@cisco.com>
cc: Vaibhav Hiremath <hvaibhav@ti.com>
cc: Lokesh Vutla <lokeshvutla@ti.com>
cc: Rusty Russell <rusty@rustcorp.com.au>
cc: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
cc: Afzal Mohammed <afzal@ti.com>
cc: linux-crypto@vger.kernel.org
cc: linux-media@vger.kernel.org
cc: linux-mtd@lists.infradead.org
cc: linux-usb@vger.kernel.org
cc: linux-fbdev@vger.kernel.org
Acked-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2.0.18 (GNU/Linux)
iQEcBAABAgAGBQJQss0FAAoJEHm+PkMAQRiG6cEH/An3PYsWBBy27tzoLyVfJKF1
3m3vR8HS2tnHg6erxms+738jos59vrWXV0Ygnvw0DHbGR0HNb4rkwce/KXu/jgOD
MRYNYhlhMFJTEUFrSrcwKITrAV3kVPWXxPXgAR6Gzpr6NPKKM9TBzEv0ze56TFYz
asOxqeBcPSS7aFZlkoNsy1wG4l0Quo5ke8VZIxo9Me5qlqubAoZ6pING4wAGXqeE
tf81CevSdpe0nqr8/dlYyCvLjrurgpJQczxRCBI3mP6kLWGfUCVzZmcu86PfT9b+
35zNJwDneIoN+D9bVDHy6mrq9uQdmhWnQuhv1joTPn6RDn1nyBRBd+A5qLxSov4=
=CPoy
-----END PGP SIGNATURE-----
Merge tag 'v3.7-rc7' into next/cleanup
Merging in mainline back to next/cleanup since it has collected a few
conflicts between fixes going upstream and some of the cleanup patches.
Git doesn't auto-resolve some of them, and they're mostly noise so let's
take care of it locally.
Conflicts are in:
arch/arm/mach-omap2/omap_hwmod_44xx_data.c
arch/arm/plat-omap/i2c.c
drivers/video/omap2/dss/dss.c
Signed-off-by: Olof Johansson <olof@lixom.net>
Felipe Balbi