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Linus Torvalds 926b02d3eb pci-v4.21-changes
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Merge tag 'pci-v4.21-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

Pull PCI updates from Bjorn Helgaas:

 - Remove unused lists from ASPM pcie_link_state (Frederick Lawler)

 - Fix Broadcom CNB20LE host bridge unintended sign extension (Colin Ian
   King)

 - Expand Kconfig "PF" acronyms (Randy Dunlap)

 - Update MAINTAINERS for arch/x86/kernel/early-quirks.c (Bjorn Helgaas)

 - Add missing include to drivers/pci.h (Alexandru Gagniuc)

 - Override Synopsys USB 3.x HAPS device class so dwc3-haps can claim it
   instead of xhci (Thinh Nguyen)

 - Clean up P2PDMA documentation (Randy Dunlap)

 - Allow runtime PM even if driver doesn't supply callbacks (Jarkko
   Nikula)

 - Remove status check after submitting Switchtec MRPC Firmware Download
   commands to avoid Completion Timeouts (Kelvin Cao)

 - Set Switchtec coherent DMA mask to allow 64-bit DMA (Boris Glimcher)

 - Fix Switchtec SWITCHTEC_IOCTL_EVENT_IDX_ALL flag overwrite issue
   (Joey Zhang)

 - Enable write combining for Switchtec MRPC Input buffers (Kelvin Cao)

 - Add Switchtec MRPC DMA mode support (Wesley Sheng)

 - Skip VF scanning on powerpc, which does this in firmware (Sebastian
   Ott)

 - Add Amlogic Meson PCIe controller driver and DT bindings (Yue Wang)

 - Constify histb dw_pcie_host_ops structure (Julia Lawall)

 - Support multiple power domains for imx6 (Leonard Crestez)

 - Constify layerscape driver data (Stefan Agner)

 - Update imx6 Kconfig to allow imx6 PCIe in imx7 kernel (Trent Piepho)

 - Support armada8k GPIO reset (Baruch Siach)

 - Support suspend/resume support on imx6 (Leonard Crestez)

 - Don't hard-code DesignWare DBI/ATU offst (Stephen Warren)

 - Skip i.MX6 PHY setup on i.MX7D (Andrey Smirnov)

 - Remove Jianguo Sun from HiSilicon STB maintainers (Lorenzo Pieralisi)

 - Mask DesignWare interrupts instead of disabling them to avoid lost
   interrupts (Marc Zyngier)

 - Add locking when acking DesignWare interrupts (Marc Zyngier)

 - Ack DesignWare interrupts in the proper callbacks (Marc Zyngier)

 - Use devm resource parser in mediatek (Honghui Zhang)

 - Remove unused mediatek "num-lanes" DT property (Honghui Zhang)

 - Add UniPhier PCIe controller driver and DT bindings (Kunihiko
   Hayashi)

 - Enable MSI for imx6 downstream components (Richard Zhu)

* tag 'pci-v4.21-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (40 commits)
  PCI: imx: Enable MSI from downstream components
  s390/pci: skip VF scanning
  PCI/IOV: Add flag so platforms can skip VF scanning
  PCI/IOV: Factor out sriov_add_vfs()
  PCI: uniphier: Add UniPhier PCIe host controller support
  dt-bindings: PCI: Add UniPhier PCIe host controller description
  PCI: amlogic: Add the Amlogic Meson PCIe controller driver
  dt-bindings: PCI: meson: add DT bindings for Amlogic Meson PCIe controller
  arm64: dts: mt7622: Remove un-used property for PCIe
  arm: dts: mt7623: Remove un-used property for PCIe
  dt-bindings: PCI: MediaTek: Remove un-used property
  PCI: mediatek: Remove un-used variant in struct mtk_pcie_port
  MAINTAINERS: Remove Jianguo Sun from HiSilicon STB DWC entry
  PCI: dwc: Don't hard-code DBI/ATU offset
  PCI: imx: Add imx6sx suspend/resume support
  PCI: armada8k: Add support for gpio controlled reset signal
  PCI: dwc: Adjust Kconfig to allow IMX6 PCIe host on IMX7
  PCI: dwc: layerscape: Constify driver data
  PCI: imx: Add multi-pd support
  PCI: Override Synopsys USB 3.x HAPS device class
  ...
2019-01-05 17:57:34 -08:00
Thinh Nguyen b6061b1e56 PCI: Move Synopsys HAPS platform device IDs
Move Synopsys HAPS platform device IDs to pci_ids.h so that both
drivers/pci/quirks.c and dwc3-haps driver can reference these IDs.

Signed-off-by: Thinh Nguyen <thinhn@synopsys.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2018-12-17 16:24:39 -06:00
Greg Kroah-Hartman 5ac93d0c5d USB changes for v4.21
So it looks like folks are interested in dwc3 again. Almost 64% of the
 changes are in dwc3 this time around with some other bits in gadget
 functions and dwc2.
 
 There are two important parts here: a. removal of the waitqueue from
 dwc3's dequeue implementation, which will guarantee that gadget
 functions can dequeue from any context and; b. better method for
 starting isochronous transfers to avoid, as much as possible, missed
 isoc frames.
 
 Apart from these, we have the usual set of non-critical fixes and new
 features all over the place.
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Merge tag 'usb-for-v4.21' of git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb into usb-next

Felipe writes:

USB changes for v4.21

So it looks like folks are interested in dwc3 again. Almost 64% of the
changes are in dwc3 this time around with some other bits in gadget
functions and dwc2.

There are two important parts here: a. removal of the waitqueue from
dwc3's dequeue implementation, which will guarantee that gadget
functions can dequeue from any context and; b. better method for
starting isochronous transfers to avoid, as much as possible, missed
isoc frames.

Apart from these, we have the usual set of non-critical fixes and new
features all over the place.

* tag 'usb-for-v4.21' of git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb: (56 commits)
  usb: dwc2: Fix disable all EP's on disconnect
  usb: dwc3: gadget: Disable CSP for stream OUT ep
  usb: dwc2: disable power_down on Amlogic devices
  Revert "usb: dwc3: pci: Use devm functions to get the phy GPIOs"
  USB: gadget: udc: s3c2410_udc: convert to DEFINE_SHOW_ATTRIBUTE
  usb: mtu3: fix dbginfo in qmu_tx_zlp_error_handler
  usb: dwc3: trace: add missing break statement to make compiler happy
  usb: dwc3: gadget: Report isoc transfer frame number
  usb: gadget: Introduce frame_number to usb_request
  usb: renesas_usbhs: Use SIMPLE_DEV_PM_OPS macro
  usb: renesas_usbhs: Remove dummy runtime PM callbacks
  usb: dwc2: host: use hrtimer for NAK retries
  usb: mtu3: clear SOFTCONN when clear USB3_EN if work as HS mode
  usb: mtu3: enable SETUPENDISR interrupt
  usb: mtu3: fix the issue about SetFeature(U1/U2_Enable)
  usb: mtu3: enable hardware remote wakeup from L1 automatically
  usb: mtu3: remove QMU checksum
  usb/mtu3: power down device ip at setup
  usb: dwc2: Disable power down feature on Samsung SoCs
  usb: dwc3: Correct the logic for checking TRB full in __dwc3_prepare_one_trb()
  ...
2018-12-12 12:29:23 +01:00
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
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
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
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 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
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
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
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 eafeacf119 usb: dwc3: Set GUSB2PHYCFG.ENBLSLPM
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>
2018-11-26 09:06:31 +02:00
Thinh Nguyen d102444cac usb: dwc3: debugfs: Print/set link state for peripheral mode
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>
2018-11-26 09:06:31 +02:00
Thinh Nguyen 0d36dede45 usb: dwc3: debugfs: Properly print/set link state for HS
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>
2018-11-26 09:06:31 +02:00
Thinh Nguyen 62ba09d6bb usb: dwc3: debugfs: Dump internal LSP and ep registers
To dump internal LSP and endpoint state debug registers, we must write
to GDBGLSPMUX register. This patch correctly dump LSP and endpoint
states from the debug registers.

If the controller is in device mode, all LSP and endpoint state
registers will be dumped via the debugfs attribute "lsp_dump". In host
mode, the user has to write the LSP number to "lsp_dump" to dump a
specific LSP selection.

Fixes: 80b776340c ("usb: dwc3: Dump LSP and BMU debug info")
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 0f874f79dc usb: dwc3: debugfs: Print eps Tx/RxFIFO in bytes
TxFIFO and RxFIFO from GDBGFIFOSPACE are fifo depths in MDWIDTH. Convert
them into bytes for easier read.

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 2c85a1817e usb: dwc3: debugfs: Properly name Tx/RxFIFO
The Tx/RxFIFO types in the GDBGFIFOSPACE.FIFO_QUEUE_SELECT are not
queue. Properly rename them.

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
Felipe Balbi 38317f5c0f Revert "usb: dwc3: gadget: skip Set/Clear Halt when invalid"
This reverts commit ffb80fc672.

Turns out that commit is wrong. Host controllers are allowed to use
Clear Feature HALT as means to sync data toggle between host and
periperal.

Cc: <stable@vger.kernel.org>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2018-11-26 09:05:27 +02:00
Felipe Balbi 2fc6d4be35 usb: dwc3: gadget: fix ISOC TRB type on unaligned transfers
When chaining ISOC TRBs together, only the first ISOC TRB should be of
type ISOC_FIRST, all others should be of type ISOC. This patch fixes
that.

Fixes: c6267a5163 ("usb: dwc3: gadget: align transfers to wMaxPacketSize")
Cc: <stable@vger.kernel.org> # v4.11+
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2018-11-14 12:43:52 +02:00
Kuppuswamy Sathyanarayanan 7b412b04a0 usb: dwc3: Fix NULL pointer exception in dwc3_pci_remove()
In dwc3_pci_quirks() function, gpiod lookup table is only registered for
baytrail SOC. But in dwc3_pci_remove(), we try to unregistered it
without any checks. This leads to NULL pointer de-reference exception in
gpiod_remove_lookup_table() when unloading the module for non baytrail
SOCs. This patch fixes this issue.

Fixes: 5741022cbd ("usb: dwc3: pci: Add GPIO lookup table on platforms
without ACPI GPIO resources")
Cc: <stable@vger.kernel.org>
Signed-off-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2018-11-14 10:37:19 +02:00
Thinh Nguyen ba3a51ac32 usb: dwc3: gadget: Properly check last unaligned/zero chain TRB
Current check for the last extra TRB for zero and unaligned transfers
does not account for isoc OUT. The last TRB of the Buffer Descriptor for
isoc OUT transfers will be retired with HWO=0. As a result, we won't
return early. The req->remaining will be updated to include the BUFSIZ
count of the extra TRB, and the actual number of transferred bytes
calculation will be wrong.

To fix this, check whether it's a short or zero packet and the last TRB
chain bit to return early.

Fixes: c6267a5163 ("usb: dwc3: gadget: align transfers to wMaxPacketSize")
Cc: <stable@vger.kernel.org>
Signed-off-by: Thinh Nguyen <thinhn@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2018-11-06 08:40:47 +02:00
Andy Shevchenko 08fd9a82fd usb: dwc3: core: Clean up ULPI device
If dwc3_core_init_mode() fails with deferred probe,
next probe fails on sysfs with

sysfs: cannot create duplicate filename '/devices/pci0000:00/0000:00:11.0/dwc3.0.auto/dwc3.0.auto.ulpi'

To avoid this failure, clean up ULPI device.

Cc: <stable@vger.kernel.org>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2018-11-06 08:40:47 +02:00
Faisal Mehmood 6af19fd105 usb: dwc3: Fix spelling of 'optimizations'
'optimizations' was misspelled as 'optmizations'. Fixed it. It is a
coding style change which should have no impact on runtime execution of code.

Signed-off-by: Faisal Mehmood <f.m3hm00d@gmail.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2018-10-02 10:43:51 +03:00
Thinh Nguyen 87dd96111b usb: dwc3: gadget: Check ENBLSLPM before sending ep command
When operating in USB 2.0 speeds (HS/FS), if GUSB2PHYCFG.ENBLSLPM or
GUSB2PHYCFG.SUSPHY is set, it must be cleared before issuing an endpoint
command.

Current implementation only save and restore GUSB2PHYCFG.SUSPHY
configuration. We must save and clear both GUSB2PHYCFG.ENBLSLPM and
GUSB2PHYCFG.SUSPHY settings. Restore them after the command is
completed.

DWC_usb3 3.30a and DWC_usb31 1.90a programming guide section 3.2.2

Signed-off-by: Thinh Nguyen <thinhn@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2018-10-02 10:38:19 +03:00
Arnd Bergmann 3def4031b3 usb: dwc3: add EXTCON dependency for qcom
Like the omap back-end, we get a link error with CONFIG_EXTCON=m
when building the qcom back-end into the kernel:

drivers/usb/dwc3/dwc3-qcom.o: In function `dwc3_qcom_probe':
dwc3-qcom.c:(.text+0x13dc): undefined reference to `extcon_get_edev_by_phandle'
dwc3-qcom.c:(.text+0x1b18): undefined reference to `devm_extcon_register_notifier'
dwc3-qcom.c:(.text+0x1b9c): undefined reference to `extcon_get_state'

Do the same thing as OMAP and add an explicit dependency on
EXTCON.

Fixes: a4333c3a6b ("usb: dwc3: Add Qualcomm DWC3 glue driver")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2018-10-02 10:33:43 +03:00
Marek Szyprowski 4c19cc1406 usb: dwc3: exynos: Add support for Exynos5433 variant with all clocks
DWC3 variant found in Exynos5433 SoCs requires keeping all DRD30/UHOST30
clocks enabled all the time the driver does any access to DWC3 registers,
otherwise external abort happens. So far DWC3 hardware module worked with
samsung,exynos5250-dwusb3 compatible only by luck when built into kernel:
all DRD30 clocks were left enabled by bootloader and later kept enabled
by the DRD PHY driver. However, if one tried to use Exnos DWC3 driver as
a module or performed system suspend/resume cycle, external abort
happened. This patch finally fixes this issue.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2018-10-02 10:33:01 +03:00
Marek Szyprowski 9f2168367a usb: dwc3: exynos: Rework clock handling and prepare for new variants
Add per-variant list of clocks and manage them all together in
the single array. This is a preparation for adding new variants
of Exynos SoCs. No functional changes for existing Exynos SoCs.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2018-10-02 10:31:43 +03:00
Marek Szyprowski 1e041b6f31 usb: dwc3: exynos: Remove dead code
All supported Exynos variants provide respective generic PHY framework
based drivers for controlling USB PHYs, so there is no point
creating fake USB PHYs based on platform devices. While removing useless
code, remove calls to runtime PM, which have no effect.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2018-10-02 10:31:38 +03:00
Greg Kroah-Hartman bfa150f37f usb: fixes for v4.19-rc2
NET2280 got a fix to an old patch attempting to fix locking for gadget
 framework callbacks.
 
 DWC2 fixed a bug where driver was attempting to access registers before
 clocks were enabled.
 
 DWC3 got a fix for ULPI clock configuration on Baytrail devices.
 
 FOTG210 plugged a memory leak and Renesas USB3 fixed ep0 maxpacket size.
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Merge tag 'fixes-for-v4.19-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb into usb-linus

Felipe writes:

usb: fixes for v4.19-rc2

NET2280 got a fix to an old patch attempting to fix locking for gadget
framework callbacks.

DWC2 fixed a bug where driver was attempting to access registers before
clocks were enabled.

DWC3 got a fix for ULPI clock configuration on Baytrail devices.

FOTG210 plugged a memory leak and Renesas USB3 fixed ep0 maxpacket size.
2018-09-06 11:21:54 +02:00
Randy Dunlap 4e3121abcf usb/dwc3/gadget: fix kernel-doc parameter warning
Fix kernel-doc warning:

../drivers/usb/dwc3/gadget.c:510: warning: Excess function parameter 'dwc' description in 'dwc3_gadget_start_config'

Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Felipe Balbi <balbi@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-09-05 13:27:07 +02:00
Wei Yongjun b497fff6f5 usb: dwc3: pci: Fix return value check in dwc3_byt_enable_ulpi_refclock()
In case of error, the function pcim_iomap() returns NULL pointer not
ERR_PTR(). The IS_ERR() test in the return value check should be
replaced with NULL test.

Fixes: 7740d04d90 ("usb: dwc3: pci: Enable ULPI Refclk on platforms where the firmware does not")
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2018-08-29 10:01:34 +03:00
Arnd Bergmann 66174b6998 usb: dwc3: of-simple: avoid unused function warnings
An incorrect #ifdef caused a pair of harmless warnings when CONFIG_PM_SLEEP
is disabled:

drivers/usb/dwc3/dwc3-of-simple.c:223:12: error: 'dwc3_of_simple_resume' defined but not used [-Werror=unused-function]
 static int dwc3_of_simple_resume(struct device *dev)
            ^~~~~~~~~~~~~~~~~~~~~
drivers/usb/dwc3/dwc3-of-simple.c:213:12: error: 'dwc3_of_simple_suspend' defined but not used [-Werror=unused-function]
 static int dwc3_of_simple_suspend(struct device *dev)

Since the #ifdef method is generally hard to get right, use
a simpler __maybe_unused annotation here to let the compiler
drop the unused functions silently. This also improves
compile-time coverage.

Fixes: 76251db865 ("usb: dwc3: of-simple: reset host controller at suspend/resume")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2018-08-29 09:59:37 +03:00
Greg Kroah-Hartman 45dd7af410 usb: changes for v4.19
Not a big pull request with only 37 non-merge commits, most of which
 are touching dwc2 (74% of the changes).
 
 The most important changes are dwc2's support for uframe scheduling
 and its endian-agnostic readl/writel wrappers.
 
 From dwc3 side we have a special new glue layer for Synopsys HAPS
 which will help Synopsys running FPGA validation using our upstream
 driver. We also have the beginnings of dual-role support for Intel
 Merrifield platform.
 
 Apart from these, just a series of non-critical changes.
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Merge tag 'usb-for-v4.19' of git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb into usb-next

Felipe writes:

usb: changes for v4.19

Not a big pull request with only 37 non-merge commits, most of which
are touching dwc2 (74% of the changes).

The most important changes are dwc2's support for uframe scheduling
and its endian-agnostic readl/writel wrappers.

From dwc3 side we have a special new glue layer for Synopsys HAPS
which will help Synopsys running FPGA validation using our upstream
driver. We also have the beginnings of dual-role support for Intel
Merrifield platform.

Apart from these, just a series of non-critical changes.
2018-07-30 10:21:14 +02:00