usb: gadget: Gadget directory cleanup - group usb functions
The drivers/usb/gadget directory contains many files.
Files which are related can be distributed into separate directories.
This patch moves the USB functions implementations into a separate directory.
Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
usb: gadget: Gadget directory cleanup - group UDC drivers
The drivers/usb/gadget directory contains many files.
Files which are related can be distributed into separate directories.
This patch moves the UDC drivers into a separate directory.
Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
usb: gadget: Gadget directory cleanup - group legacy gadgets
The drivers/usb/gadget directory contains many files.
Files which are related can be distributed into separate directories.
This patch moves the legacy gadgets (i.e. those not using configfs)
into a separate directory.
Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
George Cherian [Wed, 16 Jul 2014 12:52:12 +0000 (18:22 +0530)]
usb: musb: dsps: Add the sw_babble_control() and Enable for newer silicon
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>
George Cherian [Wed, 16 Jul 2014 12:52:11 +0000 (18:22 +0530)]
usb: musb: core: Convert the musb_platform_reset to have a return value.
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>
George Cherian [Wed, 16 Jul 2014 12:52:09 +0000 (18:22 +0530)]
usb: musb: core: Handle Babble condition only in HOST mode
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>
George Cherian [Wed, 16 Jul 2014 13:07:05 +0000 (18:37 +0530)]
usb: dwc3: omap: remove x_major calculation from revision register
Remove the x_major calculation logic from the wrapper revision register
to differentiate between OMAP5 and AM437x. This was done to find the
register offsets of wrapper register. Now that We do it using dt
compatible, remove the whole logic.
Signed-off-by: George Cherian <george.cherian@ti.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
This fixes a problem with dropped packets over 16k CDC-NCM
when the connection is being heavily used.
The issue was that the extracted frames cloned from the
received frame were consuming more memory than necessary
resulting in the truesize being ~32KB instead of ~2KB, this
meant there was a high chance of reaching the sk_rcvbuf
limit.
Signed-off-by: Jim Baxter <jim_baxter@mentor.com> Acked-by: Eric Dumazet <edumazet@google.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
Jim Baxter [Mon, 7 Jul 2014 17:33:18 +0000 (18:33 +0100)]
usb: gadget: NCM: Add transmit multi-frame.
This adds multi-frame support to the NCM NTB's for
the gadget driver. This allows multiple network
packets to be put inside a single USB NTB with a
maximum size of 16kB.
It has a time out of 300ms to ensure that smaller
number of packets still maintain a normal latency.
Also the .fp_index and .next_fp_index have been
changed to .ndp_index and .next_ndp_index to
match the latest CDC-NCM specification and
help with maintenance.
usb: gadget: Add helper macro for usb_composite_driver boilerplate
Introduce the module_usb_composite_driver macro as a convenience macro
for USB gadget composite driver modules, similar to module_usb_driver.
It is intended to be used by drivers which init/exit section does
nothing but calling usb_composite_probe/usb_composite_unrregister. By
using this macro it is possible to eliminate a few lines of boilerplate
code per USB gadget composite driver.
Based on f3a6a4b6 ("USB: Add helper macro for usb_driver boilerplate")
which introduced the according macro for USB drivers.
Signed-off-by: Tobias Klauser <tklauser@distanz.ch> Signed-off-by: Felipe Balbi <balbi@ti.com>
Add support for OS descriptors. The new format of descriptors is used,
because the "flags" field is required for extensions. os_count gives
the number of OSDesc[] elements.
The format of descriptors is given in include/uapi/linux/usb/functionfs.h.
For extended properties descriptor the usb_ext_prop_desc structure covers
only a part of a descriptor, because the wPropertyNameLength is unknown
up front.
Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com> Acked-by: Michal Nazarewicz <mina86@mina86.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
ffs_do_desc() handles one descriptor, while ffs_do_descs() handles a number
of descriptors. The tho names are so similar that it causes confusion.
Rename to reflect their purpose better.
Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com> Acked-by: Michal Nazarewicz <mina86@mina86.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
usb: musb: register nop transceiver driver for jz4740
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>
usb: gadget: pxa25x_udc: use correct header for gpio devm_ functions
commit c63d2225e7be ("usb: gadget: pxa25x_udc: use devm_ functions")
introduced the use of devm_gpio_request in this driver, but did not
correctly include the header file declaring this function, which
causes a build failure.
This changes pxa25x_udc to include linux/gpio.h instead of asm/gpio.h
to fix this.
Signed-off-by: Arnd Bergmann <arnd@arndb.de> Cc: Himangi Saraogi <himangi774@gmail.com> Cc: Julia Lawall <julia.lawall@lip6.fr> Cc: Felipe Balbi <balbi@ti.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
usb: renesas_usbhs: gadget: fix re-enabling pipe without re-connecting
This patch fixes an issue that the renesas_usbhs driver in gadget mode
cannot work correctly even if I disabled DMAC of the driver when I used
the g_zero driver and the testusb tool.
When a usb cable is re-connected, the renesas_usbhs driver calls the
usbhsp_flags_init() (via usbhs_hotplug() --> usbhs_mod_call(start) -->
usbhsg_try_start() --> usbhs_pipe_init()). However, the driver doesn't
call the usbhsp_flags_init() when usbhsg_ep_disable() is called.
So, if a gadget driver calls usb_ep_enable() and usb_ep_disable() again
and again, the renesas_usbhs driver will output the following log:
Daniel Mack [Thu, 19 Jun 2014 22:20:44 +0000 (00:20 +0200)]
usb: musb: cppi41: fire hrtimer according to programmed channel length
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
(a655f481d83, "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>
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>
Daniel Mack [Mon, 26 May 2014 12:52:39 +0000 (14:52 +0200)]
usb: musb/cppi41: call musb_ep_select() before accessing an endpoint's CSR
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>
Daniel Mack [Mon, 26 May 2014 12:52:38 +0000 (14:52 +0200)]
usb: musb: introduce dma_channel.rx_packet_done
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>
Daniel Mack [Mon, 26 May 2014 12:52:36 +0000 (14:52 +0200)]
usb: musb: use is_host_active() to distinguish between host and gadget mode
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>
usb: gadget: FunctionFS: Return -ENOENT instead of -ENODEV when device not found.
Syscall mount returns -ENODEV error if requested FS type
has not been found. Returning the same error from FFS mount
callback makes value returned to userspace misleading.
Other file systems returns -ENOENT if requested device
has not been found. Adjust FFS to this convention to make
error codes meaningfull.
Acked-by: Michal Nazarewicz <mina86@mina86.com> Signed-off-by: Krzysztof Opasiak <k.opasiak@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
Robert Baldyga [Wed, 25 Jun 2014 06:26:49 +0000 (08:26 +0200)]
tools: ffs-aio-example: add license information
Add missing information about license. Some people will probably want to
reuse this code in their projects released under variety of licenses. For this
reason this example is under Public Domain license to avoid GPL limitations.
Acked-by: Michal Nazarewicz <mina86@mina86.com> Signed-off-by: Robert Baldyga <r.baldyga@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
Robert Baldyga [Wed, 25 Jun 2014 06:26:48 +0000 (08:26 +0200)]
tools: ffs-aio-example: convert to new descriptor format
Since commit [ac8dde11: “Add flags to descriptors block”] functionfs
supports a new descriptor format, so we update example application
to make it using recomended version of descriptors.
Acked-by: Michal Nazarewicz <mina86@mina86.com> Signed-off-by: Robert Baldyga <r.baldyga@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
This patch adds support for the PLX USB3380 and USB3382.
This driver is based on the driver from the manufacturer.
Since USB338X is register compatible with NET2280, I thought that it
would be better to include this hardware into net2280 driver.
Manufacturer's driver only supported the USB33X, did not follow the
Kernel Style and contain some trivial errors. This patch has tried to
address this issues.
This patch has only been tested on USB338x hardware, but the merge has
been done trying to not affect the behaviour of NET2280.
Tested-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
Paul Zimmerman [Fri, 23 May 2014 18:39:24 +0000 (11:39 -0700)]
usb: dwc3: add support for USB 2.0-only core configuration
Newer DWC3 controllers can be built for USB 2.0-only mode, where
most of the USB 3.0 circuitry is left out. To support this mode,
the driver must limit the speed programmed into the DCFG register
to Hi-Speed or lower.
Reads and writes to the PIPECTL register are left as-is, since
they should be no-ops in USB 2.0-only mode. Calls to phy_init()
etc. for the USB3 phy are also left as-is, since the no-op USB3
phy should be used for USB 2.0-only mode controllers.
Signed-off-by: Paul Zimmerman <paulz@synopsys.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
Himangi Saraogi [Sun, 1 Jun 2014 20:43:21 +0000 (02:13 +0530)]
usb: musb: backfin: Introduce the use of the managed version of kzalloc
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:
Himangi Saraogi [Mon, 2 Jun 2014 15:45:05 +0000 (21:15 +0530)]
usb: musb: tusb6010: Introduce the use of the managed version of kzalloc
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:
Himangi Saraogi [Mon, 2 Jun 2014 16:26:01 +0000 (21:56 +0530)]
usb: musb: davinci: use devm_ functions.
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:
Himangi Saraogi [Tue, 3 Jun 2014 21:19:53 +0000 (02:49 +0530)]
usb: phy: phy-gpio-vbus-usb: use devm_ functions
The various devm_ functions allocate memory that is released when a
driver detaches. This patch uses devm_kzalloc, devm_request_irq,
devm_gpio_request, devm_regulator_get etc. for data that is
allocated in the probe function of a platform device and is only
freed in the remove function. The corresponding free functions are
removed and the labels are done away with.
Signed-off-by: Himangi Saraogi <himangi774@gmail.com> Acked-by: Julia Lawall <julia.lawall@lip6.fr> Signed-off-by: Felipe Balbi <balbi@ti.com>
Himangi Saraogi [Sat, 14 Jun 2014 15:18:27 +0000 (20:48 +0530)]
usb: gadget: fsl_qe_udc: Introduce use of managed version of kzalloc
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 some labels are
renamed to preserve ordering.
The following Coccinelle semantic patch was used for making the change:
Ben Dooks [Tue, 17 Jun 2014 15:15:01 +0000 (16:15 +0100)]
usb: gadget: r8a66597-udc: remove now unused clean_up and clean_up3 label.
With the devm additions, the clean_up and clean_up3 are now
not needed or used. Change clean_up3 and make everything use
clean_up2 and just remove clean_up.
Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk> Signed-off-by: Felipe Balbi <balbi@ti.com>
Ben Dooks [Tue, 17 Jun 2014 15:14:58 +0000 (16:14 +0100)]
usb: gadget: r8a66597-udc: cleanup error path
With the updates for devm, the cleanup path no longer needs to
check for NULL device state, so remove it and return directly
if the irq resource missing
Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk> Signed-off-by: Felipe Balbi <balbi@ti.com>
Ben Dooks [Tue, 17 Jun 2014 15:14:56 +0000 (16:14 +0100)]
usb: gadget: r8a66597-udc: use devm_kzalloc() to allocate driver state
Update driver to use devm_kzalloc() to make tracking of resources
easier. Also remove the exit point via cleanup as there's no
cleanup necessary from this point now.
As a note, also removes the error print as the allocation calls
produce errors if they do not return memory.
Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk> Signed-off-by: Felipe Balbi <balbi@ti.com>
Ben Dooks [Tue, 17 Jun 2014 15:14:55 +0000 (16:14 +0100)]
usb: gadget: r8a66597-udc: keep dev as reference to &pdev->dev
Remove usages of &pdev->dev in the driver probe function
with just dev to make the references to it easier to
write. Convert all the current users of it to use it.
Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk> Signed-off-by: Felipe Balbi <balbi@ti.com>
Himangi Saraogi [Fri, 20 Jun 2014 20:40:25 +0000 (02:10 +0530)]
usb: musb: ux500: use devm_ functions
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>
Himangi Saraogi [Sun, 22 Jun 2014 07:17:51 +0000 (12:47 +0530)]
usb: gadget: pxa25x_udc: use devm_ functions
This patch introduces the use of devm_request_irq, devm_gpio_request,
devm_clk_get etc. instead of the corresponding unmanaged interfaces. The
calls to the functions like free_irq to free the allocated resources are
removed as they are no longer required. Some labels in the probe function
are also done away with and the name of the label err_gpio_pullup is
changed to make it less specific to the context.
Signed-off-by: Himangi Saraogi <himangi774@gmail.com> Acked-by: Julia Lawall <julia.lawall@lip6.fr> Signed-off-by: Felipe Balbi <balbi@ti.com>
Linus Torvalds [Sun, 29 Jun 2014 20:40:08 +0000 (13:40 -0700)]
Merge branch 'fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-arm
Pull ARM fixes from Russell King:
"Another round of ARM fixes. The largest change here is the L2 changes
to work around problems for the Armada 37x/380 devices, where most of
the size comes down to comments rather than code.
The other significant fix here is for the ptrace code, to ensure that
rewritten syscalls work as intended. This was pointed out by Kees
Cook, but Will Deacon reworked the patch to be more elegant.
The remainder are fairly trivial changes"
* 'fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-arm:
ARM: 8087/1: ptrace: reload syscall number after secure_computing() check
ARM: 8086/1: Set memblock limit for nommu
ARM: 8085/1: sa1100: collie: add top boot mtd partition
ARM: 8084/1: sa1100: collie: revert back to cfi_probe
ARM: 8080/1: mcpm.h: remove unused variable declaration
ARM: 8076/1: mm: add support for HW coherent systems in PL310 cache
Will Deacon [Fri, 27 Jun 2014 16:01:47 +0000 (17:01 +0100)]
ARM: 8087/1: ptrace: reload syscall number after secure_computing() check
On the syscall tracing path, we call out to secure_computing() to allow
seccomp to check the syscall number being attempted. As part of this, a
SIGTRAP may be sent to the tracer and the syscall could be re-written by
a subsequent SET_SYSCALL ptrace request. Unfortunately, this new syscall
is ignored by the current code unless TIF_SYSCALL_TRACE is also set on
the current thread.
This patch slightly reworks the enter path of the syscall tracing code
so that we always reload the syscall number from
current_thread_info()->syscall after the potential ptrace traps.
Acked-by: Kees Cook <keescook@chromium.org> Tested-by: Kees Cook <keescook@chromium.org> Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Laura Abbott [Fri, 27 Jun 2014 09:17:27 +0000 (10:17 +0100)]
ARM: 8086/1: Set memblock limit for nommu
Commit 1c2f87c (ARM: 8025/1: Get rid of meminfo) changed find_limits
to use memblock_get_current_limit for calculating the max_low pfn.
nommu targets never actually set a limit on memblock though which
means memblock_get_current_limit will just return the default
value. Set the memblock_limit to be the end of DDR to make sure
bounds are calculated correctly.
Signed-off-by: Laura Abbott <lauraa@codeaurora.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
projects / linux-beck.git / log