07 Sep, 2020
1 commit
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Since the connection descriptors can't be stored into the
list anymore, there is no need for the data structure.Signed-off-by: Heikki Krogerus
Link: https://lore.kernel.org/r/20200904125123.83725-4-heikki.krogerus@linux.intel.com
Signed-off-by: Greg Kroah-Hartman
13 May, 2020
1 commit
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Right now we don't report to user-space a role switch when doing a
usb_role_switch_set_role() despite having registered the uevent callbacks.This patch switches on the notifications allowing user-space to see
role-switch change notifications and subsequently determine the current
controller data-role.example:
PFX=/devices/platform/soc/78d9000.usb/ci_hdrc.0root@somebox# udevadm monitor -p
KERNEL[49.894994] change $PFX/usb_role/ci_hdrc.0-role-switch (usb_role)
ACTION=change
DEVPATH=$PFX/usb_role/ci_hdrc.0-role-switch
SUBSYSTEM=usb_role
DEVTYPE=usb_role_switch
USB_ROLE_SWITCH=ci_hdrc.0-role-switch
SEQNUM=2432Cc: Heikki Krogerus
Cc: Greg Kroah-Hartman
Cc: Chunfeng Yun
Cc: Suzuki K Poulose
Cc: Alexandre Belloni
Cc: Wen Yang
Cc: chenqiwu
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Bryan O'Donoghue
Link: https://lore.kernel.org/r/20200508162937.2566818-1-bryan.odonoghue@linaro.org
Signed-off-by: Greg Kroah-Hartman
04 Mar, 2020
3 commits
-
The switch devices have been named by using the name of the
parent device as base for now, but if for example the
parent device controls multiple muxes, that will not work.Adding an optional member "name" to the switch descriptor
that can be used for naming the switch during registration.Signed-off-by: Heikki Krogerus
Link: https://lore.kernel.org/r/20200302135353.56659-7-heikki.krogerus@linux.intel.com
Signed-off-by: Greg Kroah-Hartman -
The USB role callback functions had a parameter pointing to
the parent device (struct device) of the switch. The
assumption was that the switch parent is always the
controller. Firstly, that may not be true in every case, and
secondly, it prevents us from supporting devices that supply
multiple muxes.Changing the first parameter of usb_role_switch_set_t and
usb_role_switch_get_t from struct device to struct
usb_role_switch.Cc: Peter Chen
Cc: Felipe Balbi
Cc: Chunfeng Yun
Cc: Bin Liu
Signed-off-by: Heikki Krogerus
Link: https://lore.kernel.org/r/20200302135353.56659-6-heikki.krogerus@linux.intel.com
Signed-off-by: Greg Kroah-Hartman -
Adding usb_role_switch_get/set_drvdata() functions that the
switch drivers can use for setting and getting private data
pointer that is associated with the switch.Signed-off-by: Heikki Krogerus
Link: https://lore.kernel.org/r/20200302135353.56659-5-heikki.krogerus@linux.intel.com
Signed-off-by: Greg Kroah-Hartman
15 Feb, 2020
1 commit
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Use kobj_to_dev() API instead of container_of().
Signed-off-by: chenqiwu
Link: https://lore.kernel.org/r/1581683820-9978-1-git-send-email-qiwuchen55@gmail.com
Signed-off-by: Greg Kroah-Hartman
06 Jan, 2020
1 commit
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ioremap has provided non-cached semantics by default since the Linux 2.6
days, so remove the additional ioremap_nocache interface.Signed-off-by: Christoph Hellwig
Acked-by: Arnd Bergmann
10 Dec, 2019
1 commit
-
Free the sw structure only after we are done using it.
This patch just moves the put_device() down a bit to avoid the
use after free.Fixes: 5c54fcac9a9d ("usb: roles: Take care of driver module reference counting")
Signed-off-by: Wen Yang
Reviewed-by: Heikki Krogerus
Reviewed-by: Peter Chen
Cc: stable
Cc: Hans de Goede
Cc: Chunfeng Yun
Cc: Suzuki K Poulose
Cc: linux-usb@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Link: https://lore.kernel.org/r/20191124142236.25671-1-wenyang@linux.alibaba.com
Signed-off-by: Greg Kroah-Hartman
04 Nov, 2019
1 commit
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Simple wrapper function that searches USB role switches with
class_find_device_by_fwnode().Signed-off-by: Heikki Krogerus
Reviewed-by: Hans de Goede
Tested-by: Hans de Goede
Link: https://lore.kernel.org/r/20191008122600.22340-2-heikki.krogerus@linux.intel.com
Signed-off-by: Greg Kroah-Hartman
19 Sep, 2019
1 commit
-
Pull USB updates from Greg KH:
"Here is the big set of USB patches for 5.4-rc1.Two major chunks of code are moving out of the tree and into the
staging directory, uwb and wusb (wireless USB support), because there
are no devices that actually use this protocol anymore, and what we
have today probably doesn't work at all given that the maintainers
left many many years ago. So move it to staging where it will be
removed in a few releases if no one screams.Other than that, lots of little things. The usual gadget and xhci and
usb serial driver updates, along with a bunch of sysfs file cleanups
due to the driver core changes to support that. Nothing really major,
just constant forward progress.All of these have been in linux-next for a while with no reported
issues"* tag 'usb-5.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (159 commits)
USB: usbcore: Fix slab-out-of-bounds bug during device reset
usb: cdns3: Remove redundant dev_err call in cdns3_probe()
USB: rio500: Fix lockdep violation
USB: rio500: simplify locking
usb: mtu3: register a USB Role Switch for dual role mode
usb: common: add USB GPIO based connection detection driver
usb: common: create Kconfig file
usb: roles: get usb-role-switch from parent
usb: roles: Add fwnode_usb_role_switch_get() function
device connection: Add fwnode_connection_find_match()
usb: roles: Introduce stubs for the exiting functions in role.h
dt-bindings: usb: mtu3: add properties about USB Role Switch
dt-bindings: usb: add binding for USB GPIO based connection detection driver
dt-bindings: connector: add optional properties for Type-B
dt-binding: usb: add usb-role-switch property
usbip: Implement SG support to vhci-hcd and stub driver
usb: roles: intel: Enable static DRD mode for role switch
xhci-ext-caps.c: Add property to disable Intel SW switch
usb: dwc3: remove generic PHY calibrate() calls
usb: core: phy: add support for PHY calibration
...
18 Sep, 2019
1 commit
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Pull device properties framework updates from Rafael Wysocki:
"Improve software node support (Heikki Krogerus) and clean up two
assorted pieces of code (Andy Shevchenko, Geert Uytterhoeven)"* tag 'devprop-5.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
software node: Initialize the return value in software_node_find_by_name()
software node: Initialize the return value in software_node_to_swnode()
ACPI / property: Fix acpi_graph_get_remote_endpoint() name in kerneldoc
device property: Remove duplicate test for NULL
platform/x86: intel_cht_int33fe: Use new API to gain access to the role switch
usb: roles: intel_xhci: Supplying software node for the role mux
software node: Add software_node_find_by_name()
04 Sep, 2019
1 commit
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when the USB host controller is the parent of the connector,
usually type-B, sometimes don't need the graph, so we should
check whether it's parent registers usb-role-switch or not
firstly, and get it if exists.Suggested-by: Heikki Krogerus
Signed-off-by: Chunfeng Yun
Link: https://lore.kernel.org/r/1567070558-29417-9-git-send-email-chunfeng.yun@mediatek.com
Signed-off-by: Greg Kroah-Hartman
03 Sep, 2019
3 commits
-
The lookup helpers are needed here.
Signed-off-by: Greg Kroah-Hartman
-
The fwnode_usb_role_switch_get() function is exactly the
same as usb_role_switch_get(), except that it takes struct
fwnode_handle as parameter instead of struct device.Signed-off-by: Heikki Krogerus
Signed-off-by: Chunfeng Yun
Tested-by: Biju Das
Link: https://lore.kernel.org/r/1567070558-29417-8-git-send-email-chunfeng.yun@mediatek.com
Signed-off-by: Greg Kroah-Hartman -
Enable static DRD mode in Intel platforms which guarantees
successful role switch all the time. This fixes issues like
software role switch failure after cold boot and issue with
role switch when USB 3.0 cable is used. But, do not enable
static DRD mode for Cherrytrail devices which rely on firmware
for role switch.Signed-off-by: Saranya Gopal
Signed-off-by: Balaji Manoharan
Reviewed-by: Heikki Krogerus
Reviewed-by: Hans de Goede
Tested-by: Hans de Goede
Link: https://lore.kernel.org/r/1567079760-24822-2-git-send-email-saranya.gopal@intel.com
Signed-off-by: Greg Kroah-Hartman
26 Aug, 2019
1 commit
-
The primary purpose for this node will be to allow linking
the users of the switch to it. The users will be for example
USB Type-C connectors. By supplying a reference to this
node in the software nodes representing the USB Type-C
controllers or connectors, the drivers for those devices can
access the switch.Signed-off-by: Heikki Krogerus
Reviewed-by: Andy Shevchenko
Signed-off-by: Rafael J. Wysocki
30 Jul, 2019
2 commits
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Add a helper to match the firmware node handle of a device and provide
wrappers for {bus/class/driver}_find_device() APIs to avoid proliferation
of duplicate custom match functions.Cc: "David S. Miller"
Cc: Doug Ledford
Cc: Jason Gunthorpe
Cc: linux-usb@vger.kernel.org
Cc: "Rafael J. Wysocki"
Cc: Ulf Hansson
Cc: Joe Perches
Cc: Will Deacon
Cc: Joerg Roedel
Signed-off-by: Suzuki K Poulose
Acked-by: Robin Murphy
Reviewed-by: Mathieu Poirier
Reviewed-by: Heikki Krogerus
Link: https://lore.kernel.org/r/20190723221838.12024-4-suzuki.poulose@arm.com
Signed-off-by: Greg Kroah-Hartman -
Add a helper to match the device name for device lookup. Also
reuse this generic exported helper for the existing bus_find_device_by_name().
and add similar variants for driver/class.Cc: Alessandro Zummo
Cc: Alexander Aring
Cc: Alexander Shishkin
Cc: Arnd Bergmann
Cc: Dan Murphy
Cc: Harald Freudenberger
Cc: Heiko Carstens
Cc: Jacek Anaszewski
Cc: Lee Jones
Cc: linux-leds@vger.kernel.org
Cc: linux-rtc@vger.kernel.org
Cc: linux-usb@vger.kernel.org
Cc: linux-wpan@vger.kernel.org
Cc: Maxime Coquelin
Cc: Pavel Machek
Cc: Peter Oberparleiter
Cc: "Rafael J. Wysocki"
Cc: Stefan Schmidt
Cc: Greg Kroah-Hartman
Cc: "Rafael J. Wysocki"
Signed-off-by: Suzuki K Poulose
Reviewed-by: Heikki Krogerus
Acked-by: Alexandre Belloni
Link: https://lore.kernel.org/r/20190723221838.12024-2-suzuki.poulose@arm.com
Signed-off-by: Greg Kroah-Hartman
03 Jun, 2019
1 commit
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We can also use this API to find named references that the
device nodes have by using fwnode_property_get_reference_args()
function.Signed-off-by: Heikki Krogerus
Tested-by: Hans de Goede
Signed-off-by: Rafael J. Wysocki
14 Feb, 2019
1 commit
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When the connections are defined in firmware, struct
device_connection will have the fwnode member pointing to
the device node (struct fwnode_handle) of the requested
device, and the endpoint will not be used at all in that
case.Acked-by: Hans de Goede
Reviewed-by: Andy Shevchenko
Reviewed-by: Jun Li
Tested-by: Jun Li
Signed-off-by: Heikki Krogerus
Signed-off-by: Greg Kroah-Hartman
22 Jan, 2019
1 commit
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There are a few remaining drivers/usb/ files that do not have SPDX
identifiers in them, all of these are either Kconfig or Makefiles. Add
the correct GPL-2.0 identifier to them to make scanning tools happy.Signed-off-by: Greg Kroah-Hartman
17 Dec, 2018
1 commit
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That makes the USB role switch support option visible and
selectable for the user. The class driver is also moved to
drivers/usb/roles/ directory.This will fix an issue that we have with the Intel USB role
switch driver on systems that don't have USB Type-C connectors:Intel USB role switch driver depends on the USB role switch
class as it should, but since there was no way for the user
to enable the USB role switch class, there was also no way
to select that driver. USB Type-C drivers select the USB
role switch class which makes the Intel USB role switch
driver available and therefore hides the problem.So in practice Intel USB role switch driver was depending on
USB Type-C drivers.Fixes: f6fb9ec02be1 ("usb: roles: Add Intel xHCI USB role switch driver")
Cc:
Signed-off-by: Heikki Krogerus
Signed-off-by: Greg Kroah-Hartman
09 Oct, 2018
1 commit
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Add missing pm_runtime_disable() to remove(), in order to avoid
an Unbalanced pm_runtime_enable when the module is removed and
re-probed.Error log:
root@intel-corei7-64:~# modprobe -r intel_xhci_usb_role_switch
root@intel-corei7-64:~# modprobe intel_xhci_usb_role_switch
intel_xhci_usb_sw intel_xhci_usb_sw: Unbalanced pm_runtime_enable!Fixes: cb2968468605 (usb: roles: intel_xhci: Enable runtime PM)
Cc:
Reviewed-by: Heikki Krogerus
Signed-off-by: Wan Ahmad Zainie
Signed-off-by: Greg Kroah-Hartman
25 May, 2018
2 commits
-
This fixes an issue where the mux does not get configured
when the parent device is suspended. The registers for this
mux are mapped to the parent device MMIO (usually xHCI PCI
device), so in order for the driver to be able to program
the registers, the parent device must be resumed.Reported-by: Sathyanarayanan Kuppuswamy
Fixes: f6fb9ec02be1 ("usb: roles: Add Intel xHCI USB role switch driver")
Signed-off-by: Heikki Krogerus
Signed-off-by: Greg Kroah-Hartman -
Trying to determine the USB port type with this mux is very
difficult. To simplify the situation, always allow user
control, even if the port is USB Type-C port.Reviewed-by: Hans de Goede
Signed-off-by: Heikki Krogerus
Signed-off-by: Greg Kroah-Hartman
22 Apr, 2018
1 commit
-
platform_get_resource() may fail and return NULL, so we should
better check it's return value to avoid a NULL pointer dereference
a bit later in the code.This is detected by Coccinelle semantic patch.
@@
expression pdev, res, n, t, e, e1, e2;
@@res = platform_get_resource(pdev, t, n);
+ if (!res)
+ return -EINVAL;
... when != res == NULL
e = devm_ioremap_nocache(e1, res->start, e2);Signed-off-by: Wei Yongjun
Signed-off-by: Greg Kroah-Hartman
26 Mar, 2018
1 commit
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In case of error, the function devm_ioremap_nocache() returns NULL
pointer not ERR_PTR(). The IS_ERR() test in the return value check
should be replaced with NULL test.Fixes: f6fb9ec02be1 ("usb: roles: Add Intel xHCI USB role switch driver")
Signed-off-by: Wei Yongjun
Reviewed-by: Hans de Goede
Signed-off-by: Greg Kroah-Hartman
22 Mar, 2018
1 commit
-
Various Intel SoCs (Cherry Trail, Broxton and others) have an internal USB
role switch for swiching the OTG USB data lines between the xHCI host
controller and the dwc3 gadget controller.Note on some Cherry Trail systems there is ACPI/AML code listening to
edge interrupts on the id-pin (through an _AIE ACPI method) and switching
the role between ROLE_HOST and ROLE_NONE based on the id-pin. Note it does
not set the role to ROLE_DEVICE, because device-mode is usually not used
under Windows.The presence of AML code which modifies the cfg0 reg (on some systems)
means that our read/write/modify of cfg0 may race with the AML code
doing the same to avoid this we take the global ACPI lock while doing
the read/write/modify.Signed-off-by: Hans de Goede
Reviewed-by: Andy Shevchenko
Signed-off-by: Heikki Krogerus
Signed-off-by: Greg Kroah-Hartman
