Commit Graph

797528 Commits

Author SHA1 Message Date
Minas Harutyunyan
4fe4f9fecc usb: dwc2: Fix disable all EP's on disconnect
Disabling all EP's allow to reset EP's to initial state.
Introduced new function dwc2_hsotg_ep_disable_lock() which
before calling dwc2_hsotg_ep_disable() function acquire
hsotg->lock and release on exiting.
From dwc2_hsotg_ep_disable() function removed acquiring
hsotg->lock.
In dwc2_hsotg_core_init_disconnected() function when USB
reset interrupt asserted disabling all ep’s by
dwc2_hsotg_ep_disable() function.
This updates eliminating sparse imbalance warnings.

Reverted changes in dwc2_hostg_disconnect() function.
Introduced new function dwc2_hsotg_ep_disable_lock().
Changed dwc2_hsotg_ep_ops. Now disable point to
dwc2_hsotg_ep_disable_lock() function.
In functions dwc2_hsotg_udc_stop() and dwc2_hsotg_suspend()
dwc2_hsotg_ep_disable() function replaced by
dwc2_hsotg_ep_disable_lock() function.
In dwc2_hsotg_ep_disable() function removed acquiring
of hsotg->lock.

Fixes: dccf1bad4b ("usb: dwc2: Disable all EP's on disconnect")
Signed-off-by: Minas Harutyunyan <hminas@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2018-12-11 15:42:39 +02:00
Tejas Joglekar
244add8ebf usb: dwc3: gadget: Disable CSP for stream OUT ep
In stream mode, when fast-forwarding TRBs, the stream number
is not cleared causing the new stream to not get assigned. So
we don't want controller to carry on transfers when short packet
is received. So disable the CSP for stream capable endpoint.

This is based on the 3.30a Programming guide, where table 3-1
device descriptor structure field definitions says for CSP bit
If this bit is 0, the controller generates an XferComplete event
and remove the stream. So if we keep CSP as 1 then switching between
streams would not happen as in stream mode, when fast-forwarding
TRBs, the stream number is not cleared causing the new stream to not get
assigned.

Signed-off-by: Tejas Joglekar <joglekar@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2018-12-10 12:50:01 +02:00
Martin Blumenstingl
cc10ce0c51 usb: dwc2: disable power_down on Amlogic devices
Disable power_down by setting the parameter to
DWC2_POWER_DOWN_PARAM_NONE. This fixes a problem on various Amlogic
Meson SoCs where USB devices are only recognized when plugged in before
booting Linux. A hot-plugged USB device was not detected even though the
device got power (my USB thumb drive for example has an LED which lit
up).

A similar fix was implemented for Rockchip SoCs in commit c216765d3a
("usb: dwc2: disable power_down on rockchip devices"). That commit
suggests that a change in the dwc2 driver is the cause because the
default value for the "hibernate" parameter (which then got renamed to
"power_down" to support other modes) was changed in the v4.17 merge
window with:
commit 6d23ee9caa ("Merge tag 'usb-for-v4.17' of git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb into usb-testing").

Cc: <stable@vger.kernel.org> # 4.19
Acked-by: Minas Harutyunyan <hminas@synopsys.com>
Suggested-by: Christian Hewitt <christianshewitt@gmail.com>
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2018-12-10 09:18:19 +02:00
Stephan Gerhold
3004cfd620 Revert "usb: dwc3: pci: Use devm functions to get the phy GPIOs"
Commit 211f658b7b ("usb: dwc3: pci: Use devm functions to get
the phy GPIOs") changed the code to claim the PHY GPIOs permanently
for Intel Baytrail devices.

This causes issues when the actual PHY driver attempts to claim the
same GPIO descriptors. For example, tusb1210 now fails to probe with:

  tusb1210: probe of dwc3.0.auto.ulpi failed with error -16 (EBUSY)

dwc3-pci needs to turn on the PHY once before dwc3 is loaded, but
usually the PHY driver will then hold the GPIOs to turn off the
PHY when requested (e.g. during suspend).

To fix the problem, this reverts the commit to restore the old
behavior to put the GPIOs immediately after usage.

Link: https://www.spinics.net/lists/linux-usb/msg174681.html
Cc: stable@vger.kernel.org
Signed-off-by: Stephan Gerhold <stephan@gerhold.net>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2018-12-07 08:13:32 +02:00
Yangtao Li
d9d1dc8170 USB: gadget: udc: s3c2410_udc: convert to DEFINE_SHOW_ATTRIBUTE
Use DEFINE_SHOW_ATTRIBUTE macro to simplify the code.

Signed-off-by: Yangtao Li <tiny.windzz@gmail.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2018-12-07 08:12:15 +02:00
YueHaibing
f770e3bc23 usb: mtu3: fix dbginfo in qmu_tx_zlp_error_handler
Fixes gcc '-Wunused-but-set-variable' warning:

drivers/usb/mtu3/mtu3_qmu.c: In function 'qmu_tx_zlp_error_handler':
drivers/usb/mtu3/mtu3_qmu.c:385:22: warning:
 variable 'req' set but not used [-Wunused-but-set-variable]

It seems dbginfo original intention is print 'req' other than 'mreq'

Acked-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2018-12-07 07:58:28 +02:00
Andy Shevchenko
54d48183d2 usb: dwc3: trace: add missing break statement to make compiler happy
The missed break statement in the outer switch makes the code fall through
always and thus always same value will be printed.

Besides that, compiler warns about missed fall through marker:

drivers/usb/dwc3/./trace.h: In function ‘trace_raw_output_dwc3_log_trb’:
drivers/usb/dwc3/./trace.h:246:4: warning: this statement may fall through [-Wimplicit-fallthrough=]
    switch (pcm) {
    ^~~~~~

Add the missing break statement to work correctly without compilation
warnings.

Fixes: fa8d965d73 ("usb: dwc3: trace: pretty print high-bandwidth transfers too")
Cc: Felipe Balbi <felipe.balbi@linux.intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2018-12-07 07:30:18 +02:00
Thinh Nguyen
6abfa0f5bb usb: dwc3: gadget: Report isoc transfer frame number
Implement the new frame_number API to report the isochronous interval
frame number. This patch checks and reports the interval in which the
isoc transfer was transmitted or received via the Isoc-First TRB SOF
number field.

Signed-off-by: Thinh Nguyen <thinhn@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2018-12-05 11:14:15 +02:00
Thinh Nguyen
6b69753fa0 usb: gadget: Introduce frame_number to usb_request
Add a field frame_number to the usb_request to report the interval
number in (micro)frames in which the isochronous transfer was
transmitted or received. The gadget driver can use this knowledge to
synchronize with the host. Also, this option is useful for debugging
purposes.

Signed-off-by: Thinh Nguyen <thinhn@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2018-12-05 11:14:11 +02:00
Yoshihiro Shimoda
d54d334e75 usb: renesas_usbhs: Use SIMPLE_DEV_PM_OPS macro
This patch uses SIMPLE_DEV_PM_OPS macro instead of struct dev_pm_ops
directly.

Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2018-12-05 11:13:58 +02:00
Jarkko Nikula
b01828e260 usb: renesas_usbhs: Remove dummy runtime PM callbacks
Platform drivers don't need dummy runtime PM callbacks that just return
success in order to have runtime PM happening. This has changed since
following commits:

commit 05aa55dddb ("PM / Runtime: Lenient generic runtime pm callbacks")
commit 543f2503a9 ("PM / platform_bus: Allow runtime PM by default")
commit 8b313a38ec ("PM / Platform: Use generic runtime PM callbacks directly")

Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Acked-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
[shimoda: revise git commit description style]
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2018-12-05 11:13:55 +02:00
Terin Stock
6ed30a7d8e usb: dwc2: host: use hrtimer for NAK retries
Modify the wait delay utilize the high resolution timer API to allow for
more precisely scheduled callbacks.

A previous commit added a 1ms retry delay after multiple consecutive
NAKed transactions using jiffies. On systems with a low timer interrupt
frequency, this delay may be significantly longer than specified,
resulting in misbehavior with some USB devices.

This scenario was reached on a Raspberry Pi 3B with a Macally FDD-USB
floppy drive (identified as 0424:0fdc Standard Microsystems Corp.
Floppy, based on the USB97CFDC USB FDC). With the relay delay, the drive
would be unable to mount a disk, replying with NAKs until the device was
reset.

Using ktime, the delta between starting the timer (in dwc2_hcd_qh_add)
and the callback function can be determined. With the original delay
implementation, this value was consistently approximately 12ms. (output
in us).

    <idle>-0     [000] ..s.  1600.559974: dwc2_wait_timer_fn: wait_timer delta: 11976
    <idle>-0     [000] ..s.  1600.571974: dwc2_wait_timer_fn: wait_timer delta: 11977
    <idle>-0     [000] ..s.  1600.583974: dwc2_wait_timer_fn: wait_timer delta: 11976
    <idle>-0     [000] ..s.  1600.595974: dwc2_wait_timer_fn: wait_timer delta: 11977

After converting the relay delay to using a higher resolution timer, the
delay was much closer to 1ms.

    <idle>-0     [000] d.h.  1956.553017: dwc2_wait_timer_fn: wait_timer delta: 1002
    <idle>-0     [000] d.h.  1956.554114: dwc2_wait_timer_fn: wait_timer delta: 1002
    <idle>-0     [000] d.h.  1957.542660: dwc2_wait_timer_fn: wait_timer delta: 1004
    <idle>-0     [000] d.h.  1957.543701: dwc2_wait_timer_fn: wait_timer delta: 1002

The floppy drive operates properly with delays up to approximately 5ms,
and sends NAKs for any delays that are longer.

Fixes: 38d2b5fb75 ("usb: dwc2: host: Don't retry NAKed transactions right away")
Cc: <stable@vger.kernel.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Acked-by: Minas Harutyunyan <hminas@synopsys.com>
Signed-off-by: Terin Stock <terin@terinstock.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2018-12-05 11:13:14 +02:00
Chunfeng Yun
47b6f8bf87 usb: mtu3: clear SOFTCONN when clear USB3_EN if work as HS mode
When the controller supports SS mode, but works as HS mode, the
SOFTCONN will not be cleared automatically when clear USB3_EN
by default, this cause an issue that can't disconnect from host,
so clear SOFTCONN when clear USB3_EN when the class driver want
to disable the D+ pullup.

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2018-12-05 11:12:28 +02:00
Chunfeng Yun
49187dd14c usb: mtu3: enable SETUPENDISR interrupt
If the controller receives a new SETUP during SETUP data stage,
and will generate SETUPENDISR interrupt, the driver should abort
the current SETUP command and process the new one.

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2018-12-05 11:12:25 +02:00
Chunfeng Yun
a0678e2eed usb: mtu3: fix the issue about SetFeature(U1/U2_Enable)
Fix the issue: device doesn't accept LGO_U1/U2:
1. set SW_U1/U2_ACCEPT_ENABLE to eanble controller to accept LGO_U1/U2
    by default;
2. enable/disable controller to initiate requests for transition into
    U1/U2 by SW_U1/U2_REQUEST_ENABLE instead of SW_U1/U2_ACCEPT_ENABLE;

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2018-12-05 11:12:23 +02:00
Chunfeng Yun
68c750cf45 usb: mtu3: enable hardware remote wakeup from L1 automatically
Enable hardware remote wakeup from L1 automatically based on the FIFO
status, instead of manual way.

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2018-12-05 11:12:19 +02:00
Chunfeng Yun
4f7371314e usb: mtu3: remove QMU checksum
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>
2018-12-05 11:12:16 +02:00
Hsin-Yi, Wang
36b25b69c2 usb/mtu3: power down device ip at setup
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>
2018-12-05 11:12:02 +02:00
Marek Szyprowski
35a6054132 usb: dwc2: Disable power down feature on Samsung SoCs
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: 03ea6d6e9e ("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>
2018-12-05 11:09:08 +02:00
Anurag Kumar Vulisha
b7a4fbe230 usb: dwc3: Correct the logic for checking TRB full in __dwc3_prepare_one_trb()
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>
2018-12-05 10:44:55 +02:00
Anurag Kumar Vulisha
26d62b4d10 usb: dwc3: don't issue no-op trb for stream capable endpoints
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>
2018-12-05 10:44:35 +02:00
Anurag Kumar Vulisha
a7351807bd usb: dwc3: update stream id in depcmd
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>
2018-12-05 10:42:50 +02:00
Felipe Balbi
d53701067f usb: dwc3: gadget: check if dep->frame_number is still valid
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>
2018-11-27 15:01:41 +02:00
Felipe Balbi
3451f6affa usb: dwc3: gadget: remove unnecessary dev_info()
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>
2018-11-26 09:14:03 +02:00
Felipe Balbi
1517265228 usb: dwc3: trace: log ep commands in hex
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>
2018-11-26 09:14:03 +02:00
Felipe Balbi
25abad6a05 usb: dwc3: gadget: return errors from __dwc3_gadget_start_isoc()
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>
2018-11-26 09:13:54 +02:00
Felipe Balbi
fec9095bde usb: dwc3: gadget: remove wait_end_transfer
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>
2018-11-26 09:08:30 +02:00
Felipe Balbi
d4f1afe5e8 usb: dwc3: gadget: move requests to cancelled_list
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>
2018-11-26 09:08:29 +02:00
Felipe Balbi
d5443bbf5f usb: dwc3: gadget: introduce cancelled_list
This list will host cancelled requests who still have TRBs being
processed.

Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2018-11-26 09:08:29 +02:00
Felipe Balbi
7746a8dfb3 usb: dwc3: gadget: extract dwc3_gadget_ep_skip_trbs()
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>
2018-11-26 09:08:29 +02:00
Felipe Balbi
c3acd59014 usb: dwc3: gadget: use num_trbs when skipping TRBs on ->dequeue()
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>
2018-11-26 09:08:29 +02:00
Felipe Balbi
09fe1f8d7e usb: dwc3: gadget: track number of TRBs per request
This will help us remove the wait_event() from our ->dequeue().

Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2018-11-26 09:08:29 +02:00
Felipe Balbi
1a22ec6435 usb: dwc3: gadget: combine unaligned and zero flags
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>
2018-11-26 09:08:29 +02:00
Thinh Nguyen
d92021f660 usb: dwc3: Add workaround for isoc start transfer failure
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>
2018-11-26 09:06:32 +02:00
Thinh Nguyen
dd74b96c74 usb: dwc3: Add disabling of start_transfer failure quirk
DWC_usb31 peripheral v1.70a-ea06 and prior needs a SW workaround for
isoc START TRANSFER command failure. However, some affected versions may
have RTL patches to fix this without a SW workaround. Add this quirk to
disable the SW workaround when it is not needed.

Synopsys STAR 9001202023: Wrong microframe number for isochronous IN
endpoints.

Signed-off-by: Thinh Nguyen <thinhn@synopsys.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2018-11-26 09:06:32 +02:00
Thinh Nguyen
475d8e0197 usb: dwc3: Track DWC_usb31 VERSIONTYPE
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>
2018-11-26 09:06:32 +02:00
Andrzej Pietrasiewicz
772a7a724f usb: gadget: f_fs: Allow scatter-gather buffers
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>
2018-11-26 09:06:32 +02:00
Vincent Pelletier
7f7c548c5f usb: gadget: f_fs: Add support for CCID descriptors.
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>
2018-11-26 09:06:32 +02:00
Colin Ian King
4ab9c39f03 usb: gadget: udc: fix spelling mistake "intrerrupt" -> "interrupt"
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>
2018-11-26 09:06:32 +02:00
Julia Lawall
e894283810 usb: gadget: uvc: constify vb2_ops structure
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>
2018-11-26 09:06:32 +02:00
Artur Petrosyan
9aed8c08c8 usb: dwc2: gadget: Accept LPM token when TxFIFO is not empty
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>
2018-11-26 09:06:32 +02:00
Artur Petrosyan
d64bc8ee92 usb: dwc2: gadget: Fix WkupAlert interrupt handler.
According to the databook DCTL_RMTWKUPSIG bit
is defined in DCTL register not in DCFG.

Updated setting DCTL_RMTWKUPSIG bit to DCTL
register.

Fixes: 187c5298a1 ("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>
2018-11-26 09:06:32 +02:00
Thinh Nguyen
89a9cc4751 usb: dwc3: Set default mode for DWC_usb3 v3.30a and higher
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>
2018-11-26 09:06:32 +02:00
Yoshihiro Shimoda
ceb94bc52c usb: gadget: udc: renesas_usb3: add a safety connection way for forced_b_device
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>
2018-11-26 09:06:32 +02:00
Andy Shevchenko
268784ba14 usb: dwc3: drd: Add support for DR detection through extcon
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>
2018-11-26 09:06:32 +02:00
Andy Shevchenko
85383756ae usb: dwc3: drd: Switch to device property for 'extcon' handling
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>
2018-11-26 09:06:31 +02:00
Brian Norris
408d3ba006 usb: dwc3: don't log probe deferrals; but do log other error codes
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>
2018-11-26 09:06:31 +02:00
Julia Lawall
1808bd2132 usb: gadget: aspeed-vhub: constify usb_gadget_ops structure
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>
2018-11-26 09:06:31 +02:00
Thinh Nguyen
022a0208c0 usb: dwc3: Support option to disable USB2 LPM
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>
2018-11-26 09:06:31 +02:00
Thinh Nguyen
5455e15607 usb: dwc3: Add a property to disable USB2 LPM
Add an option to disable USB2 LPM from host. There maybe cases where the
user does not want to enable USB2 LPM (e.g. USB2 LPM is broken).

Signed-off-by: Thinh Nguyen <thinhn@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2018-11-26 09:06:31 +02:00