linux-stable.git/drivers/usb/dwc2, branch v5.3

usb: add a hcd_uses_dma helper

2019-08-15T13:18:05+00:00

The USB buffer allocation code is the only place in the usb core (and in
fact the whole kernel) that uses is_device_dma_capable, while the URB
mapping code uses the uses_dma flag in struct usb_bus.  Switch the buffer
allocation to use the uses_dma flag used by the rest of the USB code,
and create a helper in hcd.h that checks this flag as well as the
CONFIG_HAS_DMA to simplify the caller a bit.

Signed-off-by: Christoph Hellwig 
Link: https://lore.kernel.org/r/20190811080520.21712-3-hch@lst.de
Signed-off-by: Greg Kroah-Hartman

Merge tag 'usb-for-v5.3-part2' of git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb into usb-next

2019-07-03T11:48:54+00:00

Felipe writes:

USB: more changes for v5.3 merge window

Turns out a few more important changes came about. We have the new
Cadence DRD Driver being added here and that's the biggest, most
important part.

Together with that we have suport for new imx7ulp phy. Support for
TigerLake Devices on dwc3. Also a couple important fixes which weren't
completed in time for the -rc cycle.

Signed-off-by: Felipe Balbi 

* tag 'usb-for-v5.3-part2' of git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb:
  usb: renesas_usbhs: add a workaround for a race condition of workqueue
  usb: gadget: udc: renesas_usb3: remove redundant assignment to ret
  usb: dwc2: use a longer AHB idle timeout in dwc2_core_reset()
  USB: gadget: function: fix issue Unneeded variable: "value"
  usb: phy: phy-mxs-usb: add imx7ulp support
  doc: dt-binding: mxs-usb-phy: add compatible for 7ulp
  usb:cdns3 Fix for stuck packets in on-chip OUT buffer.
  usb:cdns3 Add Cadence USB3 DRD Driver
  usb:gadget Simplify usb_decode_get_set_descriptor function.
  usb:gadget Patch simplify usb_decode_set_clear_feature function.
  usb:gadget Separated decoding functions from dwc3 driver.
  dt-bindings: add binding for USBSS-DRD controller.
  usb: dwc3: pci: add support for TigerLake Devices

usb: dwc2: use a longer AHB idle timeout in dwc2_core_reset()

2019-07-03T07:59:22+00:00

Use a 10000us AHB idle timeout in dwc2_core_reset() and make it
consistent with the other "wait for AHB master IDLE state" ocurrences.

This fixes a problem for me where dwc2 would not want to initialize when
updating to 4.19 on a MIPS Lantiq VRX200 SoC. dwc2 worked fine with
4.14.
Testing on my board shows that it takes 180us until AHB master IDLE
state is signalled. The very old vendor driver for this SoC (ifxhcd)
used a 1 second timeout.
Use the same timeout that is used everywhere when polling for
GRSTCTL_AHBIDLE instead of using a timeout that "works for one board"
(180us in my case) to have consistent behavior across the dwc2 driver.

Cc: linux-stable  # 4.19+
Acked-by: Minas Harutyunyan 
Signed-off-by: Martin Blumenstingl 
Signed-off-by: Felipe Balbi

Merge tag 'usb-for-v5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb into usb-next

2019-07-01T10:01:33+00:00

Felipe writes:

usb: changes for v5.3 merge window

The biggest part here is a set of patches removing unnecesary variables
from several drivers.

Meson-g12a's dwc3 glue implemented IRQ-based OTG/DRD role swap.

Qcom's dwc3 glue added support for ACPI, mainly for the AArch64-based
SoCs.

DWC3 also got support for Intel Elkhart Lake platforms.

* tag 'usb-for-v5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb: (30 commits)
  usb: dwc3: remove unused @lock member of dwc3_ep struct
  usb: dwc3: pci: Add Support for Intel Elkhart Lake Devices
  usb: Replace snprintf with scnprintf in gether_get_ifname
  usb: gadget: ether: Fix race between gether_disconnect and rx_submit
  usb: gadget: storage: Remove warning message
  usb: dwc3: gadget: Add support for disabling U1 and U2 entries
  usb: gadget: send usb_gadget as an argument in get_config_params
  doc: dt: bindings: usb: dwc3: Update entries for disabling U1 and U2
  usb: dwc3: qcom: Use of_clk_get_parent_count()
  usb: dwc3: Fix core validation in probe, move after clocks are enabled
  usb: dwc3: qcom: Improve error handling
  usb: dwc3: qcom: Start USB in 'host mode' on the SDM845
  usb: dwc3: qcom: Add support for booting with ACPI
  soc: qcom: geni: Add support for ACPI
  Revert "usb: dwc2: host: Setting qtd to NULL after freeing it"
  usb: gadget: net2272: remove redundant assignments to pointer 's'
  usb: gadget: Zero ffs_io_data
  USB: omap_udc: Remove unneeded variable
  fotg210-udc: Remove unneeded variable
  usb: gadget: at91_udc: Remove unneeded variable
  ...

Merge 5.2-rc6 into usb-next

2019-06-23T07:21:15+00:00

We need the USB fixes in here too.

Signed-off-by: Greg Kroah-Hartman

Revert "usb: dwc2: host: Setting qtd to NULL after freeing it"

2019-06-18T08:58:29+00:00

This reverts commit b0d659022e5c96ee5c4bd62d22d3da2d66de306b.

The reverted commit does nothing but adding two unnecessary lines
of code.  It sets a local variable to NULL in two functions, but
that variable is not used anywhere in the rest of those functions.
This is just confusing, so let's remove it.

Cc: Vardan Mikayelyan 
Cc: John Youn 
Cc: Douglas Anderson 
Cc: Felipe Balbi 
Acked-by: Minas Harutyunyan 
Reviewed-by: Douglas Anderson 
Signed-off-by: Guenter Roeck 
Signed-off-by: Felipe Balbi

USB: dwc2: Don't turn off the usbphy in suspend if wakeup is enabled

2019-06-18T08:58:28+00:00

If the 'snps,need-phy-for-wake' is set in the device tree then:

- We know that we can wakeup, so call device_set_wakeup_capable().
  The USB core will use this knowledge to enable wakeup by default.
- We know that we should keep the PHY on during suspend if something
  on our root hub needs remote wakeup.  This requires the patch (USB:
  Export usb_wakeup_enabled_descendants()).  Note that we don't keep
  the PHY on at suspend time if it's not needed because it would be a
  power draw.

If we later find some users of dwc2 that can support wakeup without
keeping the PHY on we may want to add a way to call
device_set_wakeup_capable() without keeping the PHY on at suspend
time.

Signed-off-by: Douglas Anderson 
Signed-off-by: Chris Zhong 
Signed-off-by: Felipe Balbi

usb: dwc2: Force 8bit UTMI width for Samsung Exynos SoCs

2019-06-18T08:58:28+00:00

Samsung Exynos SoCs require to force UTMI width to 8bit, otherwise the
host side of the shared USB2 PHY doesn't work.

Reported-by: Krzysztof Kozlowski 
Fixes: 707d80f0a3c5 ("usb: dwc2: gadget: Replace phyif with phy_utmi_width")
Signed-off-by: Marek Szyprowski 
Acked-by: Minas Harutyunyan 
Acked-by: Krzysztof Kozlowski 
Tested-by: Krzysztof Kozlowski 
Signed-off-by: Felipe Balbi

usb: dwc2: Use generic PHY width in params setup

2019-06-18T07:27:14+00:00

Setting params.phy_utmi_width in dwc2_lowlevel_hw_init() is pointless since
it's value will be overwritten by dwc2_init_params().

This change make sure to take in account the generic PHY width information
during paraminitialisation, done in dwc2_set_param_phy_utmi_width().

By doing so, the phy_utmi_width params can still be overrided by
devicetree specific params and will also be checked against hardware
capabilities.

Fixes: 707d80f0a3c5 ("usb: dwc2: gadget: Replace phyif with phy_utmi_width")
Acked-by: Minas Harutyunyan 
Tested-by: Marek Szyprowski 
Signed-off-by: Jules Maselbas 
Signed-off-by: Felipe Balbi

Merge 5.2-rc5 into usb-next

2019-06-17T09:23:24+00:00

We need the USB fixes in here as well.

Signed-off-by: Greg Kroah-Hartman