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The QMU checksum calculation is redundant, mostly used by debug,
so remove it here.
Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
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Originally, when dr_mode is USB_DR_MODE_HOST, it didn't power down device ip,
so host ip sleep will fail at ssusb_host_disable.
Power down device ip at ssusb_host_setup.
Acked-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Signed-off-by: Hsin-Yi, Wang <hsinyi@chromium.org>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
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Power down feature of DWC2 module integrated in Samsung SoCs doesn't work
properly or needs some additional handling in PHY or SoC glue layer, so
disable it for now. Without disabling power down, DWC2 causes random memory
trashes and fails enumeration if there is no USB link to host on driver
probe.
Fixes: 03ea6d6e9e1ff1 ("usb: dwc2: Enable power down")
Acked-by: Minas Harutyunyan <hminas@synopsys.com>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
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Availability of TRB's is calculated using dwc3_calc_trbs_left(), which
determines total available TRB's based on the HWO bit set in a TRB.
In the present code, __dwc3_prepare_one_trb() is called with a TRB which
needs to be prepared for transfer. This __dwc3_prepare_one_trb() calls
dwc3_calc_trbs_left() to determine total available TRBs and set IOC bit
if the total available TRBs are zero. Since the present working TRB (which
is passed as an argument to __dwc3_prepare_one_trb() ) doesn't yet have
the HWO bit set before calling dwc3_calc_trbs_left(), there are chances
that dwc3_calc_trbs_left() wrongly calculates this present working TRB
as free(since the HWO bit is not yet set) and returns the total available
TRBs as greater than zero (including the present working TRB). This could
be a problem.
This patch corrects the above mentioned problem in __dwc3_prepare_one_trb()
by increementing the dep->trb_enqueue at the last (after preparing the TRB)
instead of increementing at the start and setting the IOC bit only if the
total available TRBs returned by dwc3_calc_trbs_left() is 1 . Since we are
increementing the dep->trb_enqueue at the last, the present working TRB is
also considered as available by dwc3_calc_trbs_left() and non zero value is
returned . So, according to the modified logic, when the total available
TRBs is equal to 1 that means the total available TRBs in the pool are 0.
Signed-off-by: Anurag Kumar Vulisha <anurag.kumar.vulisha@xilinx.com>
Reviewed-by: Thinh Nguyen <thinhn@synopsys.com>
Tested-by: Tejas Joglekar <tejas.joglekar@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
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The stream capable endpoints require stream id to be given
when issuing START TRANSFER. While issuing no-op trb the
stream id is not yet known, so don't issue no-op trb's on
stream capable endpoints.
Signed-off-by: Anurag Kumar Vulisha <anurag.kumar.vulisha@xilinx.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
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For stream capable endpoints, stream id related information
needs to be updated into DEPCMD while issuing START TRANSFER.
This patch does the same.
Signed-off-by: Anurag Kumar Vulisha <anurag.kumar.vulisha@xilinx.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
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Add a new PID 0x7843 to the driver.
Let the new products be able to set up 3 serial ports with the driver.
Note that this depends on e8603076f540 ("USB: serial: mos7840: clean up
register handling").
Signed-off-by: JackyChou <jackychou@asix.com.tw>
[ johan: mention dependency in case anyone wants to backport this ]
Signed-off-by: Johan Hovold <johan@kernel.org>
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In the read/write function, set port 2 independently in the 2-port case.
When setting the offset of port registers, the offset between port 1 and
other ports is different, so port 1 is set independently.
Then in the rest of ports, the port 2 between 2-ports case and 4-ports case
is different, so port 2 in 2-ports case is set independently.
Specifically, port 2 in the 2-port case maps to the registers used by
port 3 in the 4-port case.
Signed-off-by: JackyChou <jackychou@asix.com.tw>
[ johan: simplify register-offset handling at port probe, add a comment
and amend commit message ]
Signed-off-by: Johan Hovold <johan@kernel.org>
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The ACPI device with INT3515 _HID is representing a complex USB PD
hardware infrastructure which includes several I2C slave ICs.
We add an ID to the I2C multi instantiate list to enumerate
all I2C slaves correctly.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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We need the USB fixes into usb-next.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb into usb-linus
Felipe writes:
USB: fixes for v4.20-rc4
In this second set of fixes for the current -rc cycle, we have some
regressions fixes for the old omap_udc driver done by Aaro Koskinen.
We're also reverting an old patch on dwc3 which is, now, known to
break USB certification in some cases.
We have a fix on u_ether for an unsafe list iteration.
* tag 'fixes-for-v4.20-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb:
usb: gadget: u_ether: fix unsafe list iteration
USB: omap_udc: fix rejection of out transfers when DMA is used
USB: omap_udc: fix USB gadget functionality on Palm Tungsten E
USB: omap_udc: fix omap_udc_start() on 15xx machines
USB: omap_udc: fix crashes on probe error and module removal
USB: omap_udc: use devm_request_irq()
Revert "usb: dwc3: gadget: skip Set/Clear Halt when invalid"
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iscsi_target_mod is the only LIO fabric where fabric_ops.name differs from
the fabric_ops.fabric_name string. fabric_ops.name is used when matching
target/$fabric ConfigFS create paths, so rename it .fabric_alias and
fallback to target/$fabric vs .fabric_name comparison if .fabric_alias
isn't initialised. iscsi_target_mod is the only fabric module to set
.fabric_alias . All other fabric modules rely on .fabric_name matching and
can drop the duplicate string.
Signed-off-by: David Disseldorp <ddiss@suse.de>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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All fabrics return a const string. In all cases *except* iSCSI the
get_fabric_name() string matches fabric_ops.name.
Both fabric_ops.get_fabric_name() and fabric_ops.name are user-facing, with
the former being used for PR/ALUA state and the latter for ConfigFS
(config/target/$name), so we unfortunately need to keep both strings around
for now. Replace the useless .get_fabric_name() accessor function with a
const string fabric_name member variable.
Signed-off-by: David Disseldorp <ddiss@suse.de>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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list_for_each_entry_safe() is not safe for deleting entries from the
list if the spin lock, which protects it, is released and reacquired during
the list iteration. Fix this issue by replacing this construction with
a simple check if list is empty and removing the first entry in each
iteration. This is almost equivalent to a revert of the commit mentioned in
the Fixes: tag.
This patch fixes following issue:
--->8---
Unable to handle kernel NULL pointer dereference at virtual address 00000104
pgd = (ptrval)
[00000104] *pgd=00000000
Internal error: Oops: 817 [#1] PREEMPT SMP ARM
Modules linked in:
CPU: 1 PID: 84 Comm: kworker/1:1 Not tainted 4.20.0-rc2-next-20181114-00009-g8266b35ec404 #1061
Hardware name: SAMSUNG EXYNOS (Flattened Device Tree)
Workqueue: events eth_work
PC is at rx_fill+0x60/0xac
LR is at _raw_spin_lock_irqsave+0x50/0x5c
pc : [<c065fee0>] lr : [<c0a056b8>] psr: 80000093
sp : ee7fbee8 ip : 00000100 fp : 00000000
r10: 006000c0 r9 : c10b0ab0 r8 : ee7eb5c0
r7 : ee7eb614 r6 : ee7eb5ec r5 : 000000dc r4 : ee12ac00
r3 : ee12ac24 r2 : 00000200 r1 : 60000013 r0 : ee7eb5ec
Flags: Nzcv IRQs off FIQs on Mode SVC_32 ISA ARM Segment none
Control: 10c5387d Table: 6d5dc04a DAC: 00000051
Process kworker/1:1 (pid: 84, stack limit = 0x(ptrval))
Stack: (0xee7fbee8 to 0xee7fc000)
...
[<c065fee0>] (rx_fill) from [<c0143b7c>] (process_one_work+0x200/0x738)
[<c0143b7c>] (process_one_work) from [<c0144118>] (worker_thread+0x2c/0x4c8)
[<c0144118>] (worker_thread) from [<c014a8a4>] (kthread+0x128/0x164)
[<c014a8a4>] (kthread) from [<c01010b4>] (ret_from_fork+0x14/0x20)
Exception stack(0xee7fbfb0 to 0xee7fbff8)
...
---[ end trace 64480bc835eba7d6 ]---
Fixes: fea14e68ff5e ("usb: gadget: u_ether: use better list accessors")
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
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Gadget driver may take an unbounded amount of time to queue requests
after XferNotReady. This is important for isochronous endpoints which
need to be started for a specific (micro-)frame.
If we fail to start a transfer for isochronous endpoint, let's try
queueing to a future interval and see if that helps. We will stop trying
if we fail a start transfer for 5 intervals in the future.
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
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Commit 387f869d2579 ("usb: gadget: u_ether: conditionally align
transfer size") started aligning transfer size only if requested,
breaking omap_udc DMA mode. Set quirk_ep_out_aligned_size to restore
the old behaviour.
Fixes: 387f869d2579 ("usb: gadget: u_ether: conditionally align transfer size")
Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
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On Palm TE nothing happens when you try to use gadget drivers and plug
the USB cable. Fix by adding the board to the vbus sense quirk list.
Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
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On OMAP 15xx machines there are no transceivers, and omap_udc_start()
always fails as it forgot to adjust the default return value.
Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
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We currently crash if usb_add_gadget_udc_release() fails, since the
udc->done is not initialized until in the remove function.
Furthermore, on module removal the udc data is accessed although
the release function is already triggered by usb_del_gadget_udc()
early in the function.
Fix by rewriting the release and remove functions, basically moving
all the cleanup into the release function, and doing the completion
only in the module removal case.
The patch fixes omap_udc module probe with a failing gadged, and also
allows the removal of omap_udc. Tested by running "modprobe omap_udc;
modprobe -r omap_udc" in a loop.
Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
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The current code fails to release the third irq on the error path
(observed by reading the code), and we get also multiple WARNs with
failing gadget drivers due to duplicate IRQ releases. Fix by using
devm_request_irq().
Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
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Running out of requests on isochronous endpoints is part of normal
operation. We don't really need to know about it every time it
happens.
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
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They are much more useful in hexadecimal than in decimal. Moreover,
generic commands are already logged in hex.
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
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Sometimes, errors happen when kicking transfers from
__dwc3_gadget_start_isoc(). In those cases, we need to pass along the
error so gadget driver can make informed decisions.
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
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Cherry G230 Stream 2.0 (G85-231) and 3.0 (G85-232) need this quirk to
function correctly. This fixes a but where double pressing numlock locks
up the device completely with need to replug the keyboard.
Signed-off-by: Michael Niewöhner <linux@mniewoehner.de>
Tested-by: Michael Niewöhner <linux@mniewoehner.de>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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There are two new Realtek card readers require ums-realtek to work
correctly.
Add the new IDs to support them.
Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Now that we have a list of cancelled requests, we can skip over TRBs
when END_TRANSFER command completes.
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
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Whenever we have a request in flight, we can move it to the cancelled
list and later simply iterate over that list and skip over any TRBs we
find.
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
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This list will host cancelled requests who still have TRBs being
processed.
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
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Extract the logic for skipping over TRBs to its own function. This
makes the code slightly more readable and makes it easier to move this
call to its final resting place as a following patch.
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
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Now that we track how many TRBs a request uses, it's easier to skip
over them in case of a call to usb_ep_dequeue(). Let's do so and
simplify the code a bit.
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
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This will help us remove the wait_event() from our ->dequeue().
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
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Both flags are used for the same purpose in dwc3: appending an extra
TRB at the end to deal with controller requirements. By combining both
flags into one, we make it clear that the situation is the same and
that they should be treated equally.
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
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In DWC_usb31 version 1.70a-ea06 and prior, for highspeed and fullspeed
isochronous IN, BIT[15:14] of the 16-bit microframe number reported by
the XferNotReady event are invalid. The driver uses this number to
schedule the isochronous transfer and passes it to the START TRANSFER
command. Because this number is invalid, the command may fail. If
BIT[15:14] matches the internal 16-bit microframe, the START TRANSFER
command will pass and the transfer will start at the scheduled time, if
it is off by 1, the command will still pass, but the transfer will start
2 seconds in the future. For all other conditions, the START TRANSFER
command will fail with bus-expiry.
In order to workaround this issue, we can test for the correct
combination of BIT[15:14] by sending START TRANSFER commands with
different values of BIT[15:14]: 'b00, 'b01, 'b10, and 'b11. Each
combination is 2^14 uframe apart (or 2 seconds). 4 seconds into the
future will result in a bus-expiry status. As the result, within the 4
possible combinations for BIT[15:14], there will be 2 successful and 2
failure START COMMAND status. One of the 2 successful command status
will result in a 2-second delay start. The smaller BIT[15:14] value is
the correct combination.
Since there are only 4 outcomes and the results are ordered, we can
simply test 2 START TRANSFER commands with BIT[15:14] combinations 'b00
and 'b01 to deduce the smaller successful combination.
Let test0 = test status for combination 'b00 and test1 = test status for
'b01 of BIT[15:14]. The correct combination is as follow:
if test0 fails and test1 passes, BIT[15:14] is 'b01
if test0 fails and test1 fails, BIT[15:14] is 'b10
if test0 passes and test1 fails, BIT[15:14] is 'b11
if test0 passes and test1 passes, BIT[15:14] is 'b00
Synopsys STAR 9001202023: Wrong microframe number for isochronous IN
endpoints.
Signed-off-by: Thinh Nguyen <thinhn@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
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Add a new field to dwc3 structure to track VERSIONTYPE. The VERSIONTYPE
is represented in ASCII in the 32-bit VERSIONTYPE register. In
DWC_usb31, sub releases for each version are tracked with VERSIONTYPE
such as "ea01" and "ea02".
Signed-off-by: Thinh Nguyen <thinhn@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
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Some protocols implemented in userspace with FunctionFS might require large
buffers, e.g. 64kB or more. Currently the said memory is allocated with
kmalloc, which might fail should system memory be highly fragmented.
On the other hand, some UDC hardware allows scatter-gather operation and
this patch takes advantage of this capability: if the requested buffer
is larger than PAGE_SIZE and the UDC allows scatter-gather operation, then
the buffer is allocated with vmalloc and a scatterlist describing it is
created and passed to usb request.
Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
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Nothing to remap, only check length.
Define a minimal structure for CCID descriptor only used to check length.
As this descriptor shares the same value as HID descriptors, keep track and
compare current interface's class to expected HID and CCID standard values.
Signed-off-by: Vincent Pelletier <plr.vincent@gmail.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
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Trivial fix to spelling mistake in comment
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
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The vb2_ops structure can be const as it is only stored in the ops
field of a vb2_queue structure and this field is const.
Done with the help of Coccinelle.
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
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Set GLPMCFG_LPM_ACCEPT_CTRL_ISOC bit in GLPMCFG register
to accept LPM token during ISOC transfers when TxFIFO is
not empty.
- Added two definitions.
#define GLPMCFG_LPM_ACCEPT_CTRL_CONTROL BIT(21)
#define GLPMCFG_LPM_ACCEPT_CTRL_ISOC BIT(22)
This patch uses GLPMCFG_LPM_ACCEPT_CTRL_ISOC.
GLPMCFG_LPM_ACCEPT_CTRL_CONTROL is defined for further use.
- Added setting GLPMCFG_LPM_ACCEPT_CTRL_ISOC bit in GLPMCFG
register in dwc2_gadget_init_lpm function.
Signed-off-by: Artur Petrosyan <arturp@synopsys.com>
Signed-off-by: Minas Harutyunyan <hminas@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
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According to the databook DCTL_RMTWKUPSIG bit
is defined in DCTL register not in DCFG.
Updated setting DCTL_RMTWKUPSIG bit to DCTL
register.
Fixes: 187c5298a122 ("usb: dwc2: gadget: Add handler for WkupAlert interrupt")
Signed-off-by: Artur Petrosyan <arturp@synopsys.com>
Signed-off-by: Minas Harutyunyan <hminas@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
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DWC_usb31 and DWC_usb3 v3.30a and higher do not support OTG mode. If
the controller supports DRD but the dr_mode is not specified or set to
OTG, then set the mode to peripheral.
Signed-off-by: Thinh Nguyen <thinhn@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
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This patch adds a safety connection way for "forced_b_device" with
"workaround_for_vbus" like below:
< Example for R-Car E3 Ebisu >
# modprobe <any usb gadget driver>
# echo 1 > /sys/kernel/debug/ee020000.usb/b_device
(connect a usb cable to host side.)
# echo 2 > /sys/kernel/debug/ee020000.usb/b_device
Previous code should have connected a usb cable before the "b_device"
is set to 1 on the Ebisu board. However, if xHCI driver on the board
is probed, it causes some troubles:
- Conflicts USB VBUS/signals between the board and another host.
- "Cannot enable. Maybe the USB cable is bad?" might happen on
both the board and another host with a usb hub.
- Cannot enumerate a usb gadget correctly because an interruption
of VBUS change happens unexpectedly.
Reported-by: Kazuya Mizuguchi <kazuya.mizuguchi.ks@renesas.com>
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
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Allow extcon device, found by name, to provide DR status for USB.
This is needed, for example, in case of Intel Merrifield platform,
where the Intel Basin Cove PMIC provides an extcon device to communicate
the detected role.
Note, that the "linux,extcon-name" property name is only for kernel
internal use by X86/ACPI platform code and as such is not documented
in the device tree bindings.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
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Switch to device property for 'extcon' handling.
No functional change intended.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
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It's not very useful to repeat a bunch of probe deferral errors. And
it's also not very useful to log "failed" without telling the error
code.
Signed-off-by: Brian Norris <briannorris@chromium.org>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
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The usb_gadget_ops structure can be const as it is only stored in
the ops field of a usb_gadget structure and this field is const.
Done with the help of Coccinelle.
Reviewed-by: Andrew Jeffery <andrew@aj.id.au>
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
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Support the option to disable USB2 LPM. Set xhci "usb2-lpm-disable"
property via "snps,usb2-lpm-disable" property.
Signed-off-by: Thinh Nguyen <thinhn@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
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GUSB2PHYCFG.ENBLSLPM enables the controller to assert low power signals
to the PHY. Unless disabled via device property, explicitly set
GUSB2PHYCFG.ENBLSLPM as it may not be set by default.
Signed-off-by: Thinh Nguyen <thinhn@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
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Current implementation only prints/sets the link state for peripheral
mode only. Check and prevent printing bogus link state if the current
mode of operation is not peripheral.
Signed-off-by: Thinh Nguyen <thinhn@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
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Highspeed device and below has different state names than superspeed and
higher. Add proper checks and printouts of link states for highspeed and
below.
Signed-off-by: Thinh Nguyen <thinhn@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
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