As part of this patch:
1. Moved existing tegra phy driver to drivers/USB directory.
2. Added standard USB phy driver APIs to tegra phy driver.
Signed-off-by: Venu Byravarasu <vbyravarasu@nvidia.com>
Tested-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Driver for the "USB20D" / "USBD" block on BCM6328, BCM6368, BCM6816,
BCM6362, BCM3383, and others.
The hardware block was designed to support networking applications
(direct connection of a home router to a PC), and the endpoint
configuration is fixed.
[ balbi@ti.com : dropped USB_GADGET_DUALSPEED from Kconfig ]
Signed-off-by: Kevin Cernekee <cernekee@gmail.com>
Acked-by: Sebastian Andrzej Siewior <sebastian@breakpoint.cc>
Signed-off-by: Felipe Balbi <balbi@ti.com>
As otg.h is containing lots of phy interface related
stuff, moving all phy interface related stuff to new
file named phy.h
Signed-off-by: Venu Byravarasu <vbyravarasu@nvidia.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
devm_* functions are already used in this file. Hence
convert clk_get to devm_clk_get for completeness.
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Silences the following type of sparse warnings:
warning: Using plain integer as NULL pointer
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Silences the following checkpatch warning:
WARNING: sizeof *hsreq should be sizeof(*hsreq)
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>
devm_* functions are used to replace kzalloc, request_mem_region, ioremap
clk_get and request_irq functions in probe call. With the usage of devm_*
functions explicit freeing and unmapping is not required.
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Some parameter names in this function's kernel-doc don't match the real
parameters. While at it, give the 'nIrq' parameter slightly more verbose
description.
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Change the call to PTR_ERR to access the value just tested by IS_ERR.
The semantic match that finds this problem is as follows:
(http://coccinelle.lip6.fr/)
// <smpl>
@@
expression e,e1;
@@
(
if (IS_ERR(e)) { ... PTR_ERR(e) ... }
|
if (IS_ERR(e=e1)) { ... PTR_ERR(e) ... }
|
*if (IS_ERR(e))
{ ...
* PTR_ERR(e1)
... }
)
// </smpl>
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit removes USB_GADGET_DUALSPEED and USB_GADGET_SUPERSPEED
Kconfig options. Since now kernel allows many UDC drivers to be
compiled, those options may turn to no longer be valid. For
instance, if someone decides to build UDC that supports super
speed and UDC that supports high speed only, the latter will be
"assumed" to support super speed since USB_GADGET_SUPERSPEED will
be selected by the former.
The test of whether CONFIG_USB_GADGET_*SPEED was defined was just
an optimisation which removed otherwise dead code (ie. if UDC is
not dual speed, there is no need to handle cases that can happen
if speed is high). This commit removes those checks.
Signed-off-by: Michal Nazarewicz <mina86@mina86.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
'req' being a pointer shouldn't be equated with 0.
Fixes the following compilation warning:
drivers/usb/gadget/s3c2410_udc.c:1299:13: warning:
Using plain integer as NULL pointer
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Fixes the following checkpatch errors:
ERROR: do not use assignment in if condition
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Silences about 75 errors and warnings related to
- Spacing
- Alignment of braces
- Line over 80 characters
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Fixes the following warning:
WARNING: Use #include <linux/io.h> instead of <asm/io.h>
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This patch (as1599) fixes dummy-hcd to make it update the appropriate
driver pointer when a new gadget driver is bound or unbound. Without
this change, the gadget driver's name doesn't appear in dev_printk
output.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Felipe Balbi <balbi@ti.com>
The lpc32xx_udc driver supported only one controller by defining a global
static struct for it. This patch enables multiple instances of the controller
by dynamic allocation of the struct at probe(). A static struct is kept as a
template on initialization since it does some complex preset, reflecting fixed
hardware endpoint structure.
Signed-off-by: Roland Stigge <stigge@antcom.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This patch removes the utilization of struct usb_endpoint_descriptor, as done
by other drivers also. This was done on request by the USB gadget maintainers,
since this API is obsoleted.
Signed-off-by: Roland Stigge <stigge@antcom.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This patch adjusts the LPC32xx USB gadget driver to the new udc_start /
udc_stop interface.
Signed-off-by: Roland Stigge <stigge@antcom.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
When connection is established non-ss mode, endpoint.maxburst is correctly set
to 0, this means that current code will set maxburst bitfield on DEPCFG's
parameter 0 to the highest possible value (0x0f) which is wrong.
Even though this hasn't caused any issues so far (HW seems to ignore that when
not running in SS mode) we want to make sure maxburst bitfield is only set to
anything other than zero if we're running on SuperSpeed mode. In order to
achieve that, let's check for gadget's operating speed before setting maxburst
bitfield when issuing DEPCFG command.
[ balbi@ti.com : improved commit log a bit in order to clarify the situation ]
Signed-off-by: Chanho Park <chanho61.park@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
As a bitmap is used for free/used. As a device freed
all memory operations must be scheduled before the bitmap
is manipulated.
Signed-off-by: Oliver Neukum <oneukum@suse.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
When IORESOURCE_IRQ_SHAREABLE is set, the irq handler may be called
even if the interupt of the USB module doesn't happen. So, it may
clear the interrupt flags by mistake. This patch fixes it.
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
%pm already provides pretty print for mac addresses, let's
use that and drop homebrew mac address printing.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
usb_gadget_remove_driver() runs through a four-step sequence to shut down
the gadget driver. For the case of a composite gadget + at91 UDC, this
would look like:
udc->driver->disconnect(udc->gadget); // composite_disconnect()
usb_gadget_disconnect(udc->gadget); // at91_pullup(gadget, 0)
udc->driver->unbind(udc->gadget); // composite_unbind()
usb_gadget_udc_stop(udc->gadget, udc->driver); // at91_stop()
The UDC driver can receive SETUP packets from the host up until the
point when usb_gadget_disconnect() returns. On rare occasions, the
gadget driver may see this sequence:
udc->driver->disconnect(udc->gadget); // composite_disconnect()
udc->driver->setup(udc->gadget, &ctrl); // composite_setup()
udc->driver->unbind(udc->gadget); // composite_unbind()
Some gadget drivers, such as composite, assume this will never happen
and crash as a result.
The fix is to quiesce the UDC hardware (via usb_gadget_disconnect)
before running the gadget driver through the disconnect/unbind sequence.
Reviewed-by: Peter Chen <peter.chen@freescale.com>
Signed-off-by: Kevin Cernekee <cernekee@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Acked-by: Michal Nazarewicz <mina86@mina86.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
The timeout values were 1000 and timeout issue occured many times on my
s3c6410 Soc based board (mostly when booting whith USB cable not
connected). This patch increase the values to 10000 to guarantee the
success of reset.
Having set timeout to 10000, I printed the remained timeout values
which could cause timeout issue before this change (tested several
times).
the first timeout value remained:
timeout = 8079
timeout = 8079
timeout = 8078
timeout = 8081
the second timeout value remained:
timeout = 7940
timeout = 7945
timeout = 7940
timeout = 7938
Seeing from above values, I think the value 10000 is big enough.
Signed-off-by: Du, Changbin <changbin.du@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Fix boot up hang when enable udc without otg enabled.
The root cause is that the clock will be shut down when probe routine is
finished because of clock gating. When a gadget driver is registered at
this time, it will call mv_udc_start which in turn will call
mv_udc_vbus_session. If there is no cable attached at the boot up time,
the vbus is low, so it will call stop_activity path without clock
enabled which will cause system hang then.
Actually, we need't go this path when clock is disabled, what we need to
do is just jump out.
Signed-off-by: Neil Zhang <zhangwm@marvell.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Fix system hang in udc shutdown routine which caused by accessing usb
register when clock is disabled. So enable usb clock before access
register.
Signed-off-by: Yunfan Zhang <yfzhang@marvell.com>
Signed-off-by: Neil Zhang <zhangwm@marvell.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
In order to support iso, we need do the following things:
1. fix length for one dtd
2. allow req contains multiple packets for a ISO transfer
Signed-off-by: Chao Xie <chao.xie@marvell.com>
Signed-off-by: Yu Xu <yuxu@marvell.com>
Signed-off-by: Neil Zhang <zhangwm@marvell.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
According to ChipIdea's reference manual in section 8.5.2
"Non-streaming operational mode in device mode", we'd better enable stream
mode, especially that ISO endpoints are not supported when the SDIS bit
is set.
Signed-off-by: Neil Zhang <zhangwm@marvell.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
build_dtd() can be called when hold a spinlock, but GFP_KERNEL may cause
dma_pool_alloc() sleep, So we need use GFP_ATOMIC instead of GFP_KERNEL.
But using GFP_ATOMIC may cause failure when allocating memory, add error
handler to handle it.
Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Signed-off-by: Neil Zhang <zhangwm@marvell.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
There are several places use udelay(LOOPS_USEC) to wait the status to be
changed, but the delay interval is a bit too long, so reduce it to
enhance the performance.
Signed-off-by: Neil Zhang <zhangwm@marvell.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Pull drm fixes from Dave Airlie:
"Intel: edid fixes, power consumption fix, s/r fix, haswell fix
Radeon: BIOS loading fixes for UEFI and Thunderbolt machines, better
MSAA validation, lockup timeout fixes, modesetting fixes
One udl dpms fix, one vmwgfx fix, a couple of trivial core changes.
There is an export added to ACPI as part of the radeon bios fixes.
I've also included the fbcon flashing cursor vs deinit race fix, that
seems the simplest place to start"
Trivial conflict in drivers/video/console/fbcon.c due to me having
already applied the fbcon flashing cursor vs deinit race fix, and Dave
had added a comment in there too.
* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux: (22 commits)
fbcon: fix race condition between console lock and cursor timer (v1.1)
drm: Add missing static storage class specifiers in drm_proc.c file
drm/udl: dpms off the crtc when disabled.
drm: Remove two unused fields from struct drm_display_mode
drm: stop vmgfx driver explosion
drm/radeon/ss: use num_crtc rather than hardcoded 6
Revert "drm/radeon: fix bo creation retry path"
drm/i915: use hsw rps tuning values everywhere on gen6+
drm/radeon: split ATRM support out from the ATPX handler (v3)
drm/radeon: convert radeon vfct code to use acpi_get_table_with_size
ACPI: export symbol acpi_get_table_with_size
drm/radeon: implement ACPI VFCT vbios fetch (v3)
drm/radeon/kms: extend the Fujitsu D3003-S2 board connector quirk to cover later silicon stepping
drm/radeon: fix checking of MSAA renderbuffers on r600-r700
drm/radeon: allow CMASK and FMASK in the CS checker on r600-r700
drm/radeon: init lockup timeout on ring init
drm/radeon: avoid turning off spread spectrum for used pll
drm/i915: fall back to bit-banging if GMBUS fails in CRT EDID reads
drm/i915: extract connector update from intel_ddc_get_modes() for reuse
drm/i915: fix hsw uncached pte
...
Pull SCSI target fixes from Nicholas Bellinger:
"The executive summary includes:
- Post-merge review comments for tcm_vhost (MST + nab)
- Avoid debugging overhead when not debugging for tcm-fc(FCoE) (MDR)
- Fix NULL pointer dereference bug on alloc_page failulre (Yi Zou)
- Fix REPORT_LUNs regression bug with pSCSI export (AlexE + nab)
- Fix regression bug with handling of zero-length data CDBs (nab)
- Fix vhost_scsi_target structure alignment (MST)
Thanks again to everyone who contributed a bugfix patch, gave review
feedback on tcm_vhost code, and/or reported a bug during their own
testing over the last weeks.
There is one other outstanding bug reported by Roland recently related
to SCSI transfer length overflow handling, for which the current
proposed bugfix has been left in queue pending further testing with
other non iscsi-target based fabric drivers.
As the patch is verified with loopback (local SGL memory from SCSI
LLD) + tcm_qla2xxx (TCM allocated SGL memory mapped to PCI HW) fabric
ports, it will be included into the next 3.6-rc-fixes PULL request."
* git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending:
target: Remove unused se_cmd.cmd_spdtl
tcm_fc: rcu_deref outside rcu lock/unlock section
tcm_vhost: Fix vhost_scsi_target structure alignment
target: Fix regression bug with handling of zero-length data CDBs
target/pscsi: Fix bug with REPORT_LUNs handling for SCSI passthrough
tcm_vhost: Change vhost_scsi_target->vhost_wwpn to char *
target: fix NULL pointer dereference bug alloc_page() fails to get memory
tcm_fc: Avoid debug overhead when not debugging
tcm_vhost: Post-merge review changes requested by MST
tcm_vhost: Fix incorrect IS_ERR() usage in vhost_scsi_map_iov_to_sgl
Pull i2c-embedded fixes from Wolfram Sang:
"Some bugfixes for the "embedded" part of the I2C subsystem. The fixes
affect mostly drivers which have been largely reworked lately and
where regressions appeared."
* 'i2c-embedded/for-current' of git://git.pengutronix.de/git/wsa/linux:
i2c: tegra: protect suspend/resume callbacks with CONFIG_PM_SLEEP
i2c: diolan-u2c: Fix master_xfer return code
I2C: OMAP: xfer: fix runtime PM get/put balance on error
i2c: nomadik: Add default configuration into the Nomadik I2C driver
These patches fix the Samsung PWM driver and perform some minor cleanups
like fixing checkpatch and sparse warnings. Two redundant error messages
are removed and the Kconfig help text for the PWM subsystem is made more
descriptive.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2.0.19 (GNU/Linux)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=oTl5
-----END PGP SIGNATURE-----
Merge tag 'for-3.6-rc3' of git://gitorious.org/linux-pwm/linux-pwm
Pull pwm fixes from Thierry Reding:
"These patches fix the Samsung PWM driver and perform some minor
cleanups like fixing checkpatch and sparse warnings.
Two redundant error messages are removed and the Kconfig help text for
the PWM subsystem is made more descriptive."
* tag 'for-3.6-rc3' of git://gitorious.org/linux-pwm/linux-pwm:
pwm: Improve Kconfig help text
pwm: core: Fix coding style issues
pwm: vt8500: Fix coding style issue
pwm: Remove a redundant error message when devm_request_and_ioremap fails
pwm: samsung: add missing device pointer to struct pwm_chip
pwm: Add missing static storage class specifiers in core.c file
Pull ceph fixes from Sage Weil:
"Jim's fix closes a narrow race introduced with the msgr changes. One
fix resolves problems with debugfs initialization that Yan found when
multiple client instances are created (e.g., two clusters mounted, or
rbd + cephfs), another one fixes problems with mounting a nonexistent
server subdirectory, and the last one fixes a divide by zero error
from unsanitized ioctl input that Dan Carpenter found."
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client:
ceph: avoid divide by zero in __validate_layout()
libceph: avoid truncation due to racing banners
ceph: tolerate (and warn on) extraneous dentry from mds
libceph: delay debugfs initialization until we learn global_id
- NFSv3 mounts need to fail if the FSINFO rpc call fails
- Ensure that the NFS commit cache gets torn down when we unload the
NFS module.
- Fix memory scribble issues when interrupting a LAYOUTGET rpc call
- Fix NFSv4 legacy idmapper regressions
- Fix issues with the NFSv4 getacl command
- Fix a regression when using the legacy "mount -t nfs4"
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.12 (GNU/Linux)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=lqfh
-----END PGP SIGNATURE-----
Merge tag 'nfs-for-3.6-3' of git://git.linux-nfs.org/projects/trondmy/linux-nfs
Pull NFS client bugfixes from Trond Myklebust:
- NFSv3 mounts need to fail if the FSINFO rpc call fails
- Ensure that the NFS commit cache gets torn down when we unload the
NFS module.
- Fix memory scribble issues when interrupting a LAYOUTGET rpc call
- Fix NFSv4 legacy idmapper regressions
- Fix issues with the NFSv4 getacl command
- Fix a regression when using the legacy "mount -t nfs4"
* tag 'nfs-for-3.6-3' of git://git.linux-nfs.org/projects/trondmy/linux-nfs:
NFSv3: Ensure that do_proc_get_root() reports errors correctly
NFSv4: Ensure that nfs4_alloc_client cleans up on error.
NFS: return -ENOKEY when the upcall fails to map the name
NFS: Clear key construction data if the idmap upcall fails
NFSv4: Don't use private xdr_stream fields in decode_getacl
NFSv4: Fix the acl cache size calculation
NFSv4: Fix pointer arithmetic in decode_getacl
NFS: Alias the nfs module to nfs4
NFS: Fix a regression when loading the NFS v4 module
NFSv4.1: Remove a bogus BUG_ON() in nfs4_layoutreturn_done
pnfs-obj: Better IO pattern in case of unaligned offset
NFS41: add pg_layout_private to nfs_pageio_descriptor
pnfs: nfs4_proc_layoutget returns void
pnfs: defer release of pages in layoutget
nfs: tear down caches in nfs_init_writepagecache when allocation fails
Pull assorted fixes - mostly vfs - from Al Viro:
"Assorted fixes, with an unexpected detour into vfio refcounting logics
(fell out when digging in an analog of eventpoll race in there)."
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
task_work: add a scheduling point in task_work_run()
fs: fix fs/namei.c kernel-doc warnings
eventpoll: use-after-possible-free in epoll_create1()
vfio: grab vfio_device reference *before* exposing the sucker via fd_install()
vfio: get rid of vfio_device_put()/vfio_group_get_device* races
vfio: get rid of open-coding kref_put_mutex
introduce kref_put_mutex()
vfio: don't dereference after kfree...
mqueue: lift mnt_want_write() outside ->i_mutex, clean up a bit
It seems commit 4a9d4b02 (switch fput to task_work_add) reintroduced
the problem addressed in commit 944be0b2 (close_files(): add scheduling
point)
If a server process with a lot of files (say 2 million tcp sockets)
is killed, we can spend a lot of time in task_work_run() and trigger
a soft lockup.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Fix kernel-doc warnings in fs/namei.c:
Warning(fs/namei.c:360): No description found for parameter 'inode'
Warning(fs/namei.c:672): No description found for parameter 'nd'
Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: linux-fsdevel@vger.kernel.org
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
As soon as we'd installed the file into descriptor table, it can
get closed by another thread. Freeing ep in process...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
It's not critical (anymore) since another thread closing the file will block
on ->device_lock before it gets to dropping the final reference, but it's
definitely cleaner that way...
Acked-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
we really need to make sure that dropping the last reference happens
under the group->device_lock; otherwise a loop (under device_lock)
might find vfio_device instance that is being freed right now, has
already dropped the last reference and waits on device_lock to exclude
the sucker from the list.
Acked-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
