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Convert endpoint configuration to new capabilities model.
Signed-off-by: Robert Baldyga <r.baldyga@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Convert endpoint configuration to new capabilities model.
Signed-off-by: Robert Baldyga <r.baldyga@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Convert endpoint configuration to new capabilities model.
Signed-off-by: Robert Baldyga <r.baldyga@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Convert endpoint configuration to new capabilities model.
Signed-off-by: Robert Baldyga <r.baldyga@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Convert endpoint configuration to new capabilities model.
Signed-off-by: Robert Baldyga <r.baldyga@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Convert endpoint configuration to new capabilities model.
Signed-off-by: Robert Baldyga <r.baldyga@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Convert endpoint configuration to new capabilities model.
Signed-off-by: Robert Baldyga <r.baldyga@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Convert endpoint configuration to new capabilities model.
Signed-off-by: Robert Baldyga <r.baldyga@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Convert endpoint configuration to new capabilities model.
Signed-off-by: Robert Baldyga <r.baldyga@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Convert endpoint configuration to new capabilities model.
Signed-off-by: Robert Baldyga <r.baldyga@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Convert endpoint configuration to new capabilities model.
Signed-off-by: Robert Baldyga <r.baldyga@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Convert endpoint configuration to new capabilities model.
Signed-off-by: Robert Baldyga <r.baldyga@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Convert endpoint configuration to new capabilities model.
Signed-off-by: Robert Baldyga <r.baldyga@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Convert endpoint configuration to new capabilities model.
Signed-off-by: Robert Baldyga <r.baldyga@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Convert endpoint configuration to new capabilities model.
Signed-off-by: Robert Baldyga <r.baldyga@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Convert endpoint configuration to new capabilities model.
Signed-off-by: Robert Baldyga <r.baldyga@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Convert endpoint configuration to new capabilities model.
Signed-off-by: Robert Baldyga <r.baldyga@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Convert endpoint configuration to new capabilities model.
Signed-off-by: Robert Baldyga <r.baldyga@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
So far it was necessary for usb functions to set ep->driver_data in
endpoint obtained from autoconfig to non-null value, to indicate that
endpoint is claimed by function (in autoconfig it was checked if endpoint
has set this field to non-null value, and if it has, it was assumed that
it is claimed). It could cause bugs because if some function doesn't
set this field autoconfig could return the same endpoint more than one
time.
To help to avoid such bugs this patch adds claimed flag to struct usb_ep,
and encapsulates endpoint claiming mechanism inside usb_ep_autoconfig_ss()
and usb_ep_autoconfig_reset(), so now usb functions don't need to perform
any additional actions to mark endpoint obtained from autoconfig as claimed.
Signed-off-by: Robert Baldyga <r.baldyga@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
commit 913e4a90b6f9 ("usb: gadget: f_uac2:
finalize wMaxPacketSize according to bandwidth")
added a possible build warning when calling
min(). In order to fix the warning, we just
make sure to call min_t() and tell that its
arguments should be u16.
Cc: Peter Chen <peter.chen@freescale.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Replace redundant variable use in return statement.
Signed-off-by: Saurabh Karajgaonkar <skarajga@visteon.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Replace redundant variable use in return statement.
Signed-off-by: Saurabh Karajgaonkar <skarajga@visteon.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Replace redundant variable use in return statement.
Signed-off-by: Saurabh Karajgaonkar <skarajga@visteon.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
We need to check that a TRB is part of the current segment
before calculating its DMA address.
Previously a ring segment didn't use a full memory page, and every
new ring segment got a new memory page, so the off by one
error in checking the upper bound was never seen.
Now that we use a full memory page, 256 TRBs (4096 bytes), the off by one
didn't catch the case when a TRB was the first element of the next segment.
This is triggered if the virtual memory pages for a ring segment are
next to each in increasing order where the ring buffer wraps around and
causes errors like:
[ 106.398223] xhci_hcd 0000:00:14.0: ERROR Transfer event TRB DMA ptr not part of current TD ep_index 0 comp_code 1
[ 106.398230] xhci_hcd 0000:00:14.0: Looking for event-dma fffd3000 trb-start fffd4fd0 trb-end fffd5000 seg-start fffd4000 seg-end fffd4ff0
The trb-end address is one outside the end-seg address.
Cc: <stable@vger.kernel.org>
Tested-by: Arkadiusz Miśkiewicz <arekm@maven.pl>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Just one major fix which has been pending since January.
Somehow it fell through the cracks, but here it is. Basically,
this fixes a bug in udc-core when gadget registration fails.
Signed-off-by: Felipe Balbi <balbi@ti.com>
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Merge tag 'fixes-for-v4.2-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb into usb-linus
Felipe writes:
usb: fixes for v4.2-rc6
Just one major fix which has been pending since January.
Somehow it fell through the cracks, but here it is. Basically,
this fixes a bug in udc-core when gadget registration fails.
Signed-off-by: Felipe Balbi <balbi@ti.com>
Since some chipidea based controller is not otg capable, add ci->is_otg
condition when setting is_otg flag for gadget.
Signed-off-by: Li Jun <jun.li@freescale.com>
Reviewed-by: Roger Quadros <rogerq@ti.com>
Acked-by: Peter Chen <peter.chen@freescale.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This patch fixes a bug in the error pathway of
usb_add_gadget_udc_release() in udc-core.c. If the udc registration
fails, the gadget registration is not fully undone; there's a
put_device(&gadget->dev) call but no device_del().
CC: <stable@vger.kernel.org>
Acked-by: Peter Chen <peter.chen@freescale.com>
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Function printer_func_disable() has called spinlock on printer_dev->lock,
and it'll call function chain of
printer_reset_interface()
|
+---dwc3_gadget_ep_disable()
|
+---__dwc3_gadget_ep_disable()
|
+---dwc3_remove_requests()
|
+---dwc3_gadget_giveback()
|
+---rx_complete()
in the protected block.
However, rx_complete() in f_printer.c calls spinlock on printer_dev->lock
again, which will cause system hang.
The following steps can reproduce this hang:
1. Build the test program from Documentation/usb/gadget_printer.txt as
g_printer
2. Plug in the USB device to a host(such as Ubuntu).
3. on the USB device system run:
#modprobe g_printer.ko
#./g_printer -read_data
4. Unplug the USB device from the host
The system will hang later.
In order to avoid this deadlock, moving the spinlock from
printer_func_disable() into printer_reset_interface() and excluding the block
of calling dwc3_gadget_ep_disable(), in which the critical resource will be
protected by its spinlock in rx_complete().
This commit will fix the system hang with the following calltrace:
INFO: rcu_preempt detected stalls on CPUs/tasks: { 3} (detected by 0, t=21006 jiffies, g=524, c=523, q=2)
sending NMI to all CPUs:
NMI backtrace for cpu 3
CPU: 3 PID: 718 Comm: irq/22-dwc3 Not tainted 3.10.38-ltsi-WR6.0.0.11_standard #2
Hardware name: Intel Corp. VALLEYVIEW B3 PLATFORM/NOTEBOOK, BIOS BYTICRB1.86C.0092.R32.1410021707 10/02/2014
task: f44f4c20 ti: f40f6000 task.ti: f40f6000
EIP: 0060:[<c1824955>] EFLAGS: 00000097 CPU: 3
EIP is at _raw_spin_lock_irqsave+0x35/0x40
EAX: 00000076 EBX: f80fad00 ECX: 00000076 EDX: 00000075
ESI: 00000096 EDI: ffffff94 EBP: f40f7e20 ESP: f40f7e18
DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068
CR0: 8005003b CR2: b77ac000 CR3: 01c30000 CR4: 001007f0
DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000
DR6: ffff0ff0 DR7: 00000400
Stack:
f474a720 f80fad00 f40f7e3c f80f93cc c135d486 00000000 f474a720 f468fb00
f4bea894 f40f7e54 f7e35f19 ffffff00 f468fb00 f468fb24 00000086 f40f7e64
f7e36577 f468fb00 f4bea810 f40f7e74 f7e365a8 f468fb00 f4bea894 f40f7e9c
Call Trace:
[<f80f93cc>] rx_complete+0x1c/0xb0 [g_printer]
[<c135d486>] ? vsnprintf+0x166/0x390
[<f7e35f19>] dwc3_gadget_giveback+0xc9/0xf0 [dwc3]
[<f7e36577>] dwc3_remove_requests+0x57/0x70 [dwc3]
[<f7e365a8>] __dwc3_gadget_ep_disable+0x18/0x60 [dwc3]
[<f7e366e9>] dwc3_gadget_ep_disable+0x89/0xf0 [dwc3]
[<f80f9031>] printer_reset_interface+0x31/0x50 [g_printer]
[<f80f9270>] printer_func_disable+0x20/0x30 [g_printer]
[<f80e6d8b>] composite_disconnect+0x4b/0x90 [libcomposite]
[<f7e39a8b>] dwc3_disconnect_gadget+0x38/0x43 [dwc3]
[<f7e39ad4>] dwc3_gadget_disconnect_interrupt+0x3e/0x5a [dwc3]
[<f7e373b8>] dwc3_thread_interrupt+0x5c8/0x610 [dwc3]
[<c10ac518>] irq_thread_fn+0x18/0x30
[<c10ac800>] irq_thread+0x100/0x130
[<c10ac500>] ? irq_finalize_oneshot.part.29+0xb0/0xb0
[<c10ac650>] ? wake_threads_waitq+0x40/0x40
[<c10ac700>] ? irq_thread_dtor+0xb0/0xb0
[<c1057224>] kthread+0x94/0xa0
[<c182b337>] ret_from_kernel_thread+0x1b/0x28
[<c1057190>] ? kthread_create_on_node+0xc0/0xc0
Signed-off-by: Fupan Li <fupan.li@windriver.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
With recent changes to MUSB code, we can now now get rid of
the Kconfig choise for the DMA code and allow building in any
of the desired DMA code. This makes life easier for distros.
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This patch replace dynamicly allocated luns array with static one.
This simplifies the code of mass storage function and modules.
Signed-off-by: Krzysztof Opasiak <k.opasiak@samsung.com>
Acked-by: Michal Nazarewicz <mina86@mina86.com>
Add missing return value check. In case of error print debug message
and return error code.
Signed-off-by: Robert Baldyga <r.baldyga@samsung.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Michal Nazarewicz <mina86@mina86.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Since maxpacket_limit was introduced all UDC drivers should use
usb_ep_set_maxpacket_limit() function instead of setting maxpacket value
manually. ep.maxpacket_limit contains actual maximum maxpacket value
supported by hardware which is needed by epautoconf.
Signed-off-by: Robert Baldyga <r.baldyga@samsung.com>
Acked-by: Michal Nazarewicz <mina86@mina86.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Function midi registers two interfaces with single set_alt() function
which means that f_midi_set_alt() is called twice when configuration
is set. That means that endpoint initialization and ep request allocation
is done two times. To avoid this problem we do such things only once,
for interface number 1 (MIDI Streaming interface).
Signed-off-by: Robert Baldyga <r.baldyga@samsung.com>
Acked-by: Michal Nazarewicz <mina86@mina86.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Function ffs_do_functionfs_bind() calls functionfs_bind() which allocates
usb request and increments refcounts. These things needs to be cleaned
up by if further steps of initialization fail by calling functionfs_unbind().
Signed-off-by: Robert Baldyga <r.baldyga@samsung.com>
Acked-by: Michal Nazarewicz <mina86@mina86.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
When using Edgeport/416 models with newer firmware (sometime after
firmware version 4.80.0), idle ports are automatically bounced
(disconnected and then reconnected) approximately every 60 seconds.
This breaks programs (e.g: minicom) where idle periods are common,
normal and expected.
I confirmed with the manufacturer (Digi International) that Edgeport/416
models now ship from the factory with firmware that expects periodic
"heartbeat" queries from the driver to keep idle ports alive. This
patch implements heartbeat support using the mechanism Digi suggested
(periodically requesting an I2C descriptor address) that appears effective
on Edgeports running the newer firmware (that require it) and benign on
Edgeport devices running older firmware. Since we know that Edgeport
firmware version 4.80 (the version distributed in /lib/firmware/down3.bin
and used for Edgeports that are either running still older versions or
have no onboard non-volatile firmware image) does not require heartbeat
support, this patch schedules heartbeats only on Edgeport/416 devices,
and only if they are running firmware versions newer than 4.80.
Signed-off-by: Peter E. Berger <pberger@brimson.com>
[johan: minor style changes ]
Signed-off-by: Johan Hovold <johan@kernel.org>
Do what we can to verify that the driver's firmware image is valid
(before attempting to download it to the Edgeport) by adding a new
function, check_fw_sanity(), and a call to it in in download_fw().
Note: It looks like some Edgeports (models like the EP/416 with on-board
E2PROM) may be able to function even if the on-disk firmware image is
bad or missing, iff their local E2PROM versions are valid. But most
Edgeport models (I've tried EP/1 and EP/8) do not appear to have this
capability and they always rely on the on-disk firmware image.
I tested an implementation that calls the new check_fw_sanity()
function at the top of download_fw() and, rather than simply returning
an error if the firmware image is bad or missing, it saves the result
and defers the decision until later when it may find that it is running
on a E2PROM-equipped device with a valid image. But I think this is
messier than it is worth (adding still more messiness to the already
very messy download_fw()) for such a marginal possible benefit. So, at
least for now, I have chosen the much simpler approach of returning an
error whenever edge_startup() fails to load an on-disk firmware image, or
check_fw_sanity() indicates that it is unusable.
Signed-off-by: Peter E. Berger <pberger@brimson.com>
[johan: drop redundant checksum mask ]
Signed-off-by: Johan Hovold <johan@kernel.org>
The io_ti driver fails to download firmware to Edgeport
devices such as the EP/416, even when the on-disk firmware image
(/lib/firmware/edgeport/down3.bin) is more current than the version
on the EP/416. The current download code is broken in a few ways.
Notably it mis-uses global variables OperationalMajorVersion and
OperationalMinorVersion (reading their values before they've been
properly initialized and subsequently initializing them multiple times
without synchronization). This patch drops the global variables and
replaces the redundant calls to request_firmware()/release_firmware()
in download_fw() with a single call pair in edge_startup(); the firmware
image pointer is then passed to download_fw() and build_i2c_fw_hdr().
Signed-off-by: Peter E. Berger <pberger@brimson.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
The io_ti driver fails to download firmware to Edgeport devices such as
the EP/416 and EP/421 (devices with on-board E2PROM). One of the problems
is that the default 1 second timeout in ti_vsend_sync() is insufficient
for download operations. This patch increases the download timeout to
10 seconds.
Signed-off-by: Peter E. Berger <pberger@brimson.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
Here's a fix for some Sierra Wireless modems and a couple of new device
ids.
Signed-off-by: Johan Hovold <johan@kernel.org>
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Merge tag 'usb-serial-4.2-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/johan/usb-serial into usb-linus
Johan writes:
USB-serial fixes for v4.2-rc5
Here's a fix for some Sierra Wireless modems and a couple of new device
ids.
Signed-off-by: Johan Hovold <johan@kernel.org>
According to USB Audio Device 2.0 Spec, Ch4.10.1.1:
wMaxPacketSize is defined as follows:
Maximum packet size this endpoint is capable of sending or receiving
when this configuration is selected.
This is determined by the audio bandwidth constraints of the endpoint.
In current code, the wMaxPacketSize is defined as the maximum packet size
for ISO endpoint, and it will let the host reserve much more space than
it really needs, so that we can't let more endpoints work together at
one frame.
We find this issue when we try to let 4 f_uac2 gadgets work together [1]
at FS connection.
[1]http://www.spinics.net/lists/linux-usb/msg123478.html
Acked-by: Daniel Mack <zonque@gmail.com>
Cc: andrzej.p@samsung.com
Cc: Daniel Mack <zonque@gmail.com>
Cc: tiwai@suse.de
Cc: <stable@vger.kernel.org> #v3.18+
Cc: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Peter Chen <peter.chen@freescale.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
After the worker thread is launched, bind function is doing further
configuration. In case of failure stop the thread.
Acked-by: Michal Nazarewicz <mina86@mina86.com>
Signed-off-by: Sanjay Singh Rawat <snjsrwt@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
There is an "&&" vs "||" typo here so this loops 3000 times or if we get
unlucky it could loop forever.
Fixes: ceaa0a6eeadf ('usb: gadget: m66592-udc: add support for TEST_MODE')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
We handle the "if (!req->req.length)" condition at the start of the
function and return. We can delete this dead code.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
apq8016-sbc board is using Dual SPDT USB Switch (TC7USB40MU),
witch is controlled by GPIO to de/multiplex D+/D- USB lines to
USB2513B Hub and uB connector. Add support for this.
Signed-off-by: Ivan T. Ivanov <ivan.ivanov@linaro.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Replace calls of gadget_supports_altsettings() function (which check altset
support by comparing UDC controller name with hardcoded names) with
gadget_is_altset_supported() which checks generic quirk bitfield.
Signed-off-by: Robert Baldyga <r.baldyga@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Use generic mechanism to check if UDC controller supports zlp.
Signed-off-by: Robert Baldyga <r.baldyga@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Use generic mechanism to check if UDC controller supports stalling.
Signed-off-by: Robert Baldyga <r.baldyga@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
