USB: host: Use the correct style for SPDX License Identifier

This patch corrects the SPDX License Identifier style in
header files related to USB host controller drivers.
For C header files Document

USB: host: Use the correct style for SPDX License Identifier

This patch corrects the SPDX License Identifier style in
header files related to USB host controller drivers.
For C header files Documentation/process/license-rules.rst
mandates C-like comments (opposed to C source files where
C++ style should be used).

Changes made by using a script provided by Joe Perches here:
https://lkml.org/lkml/2019/2/7/46.

Suggested-by: Joe Perches <joe@perches.com>
Signed-off-by: Nishad Kamdar <nishadkamdar@gmail.com>
Link: https://lore.kernel.org/r/20200404092135.GA4522@nishad
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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usb: phy: Workaround for USB erratum-A005728

PHY_CLK_VALID bit for UTMI PHY in USBDR does not set even
if PHY is providing valid clock. Workaround for this
involves resetting of PHY and check PHY_CL

usb: phy: Workaround for USB erratum-A005728

PHY_CLK_VALID bit for UTMI PHY in USBDR does not set even
if PHY is providing valid clock. Workaround for this
involves resetting of PHY and check PHY_CLK_VALID bit
multiple times. If PHY_CLK_VALID bit is still not set even
after 5 retries, it would be safe to deaclare that PHY
clock is not available.
This erratum is applicable for USBDR less then ver 2.4.

Signed-off-by: Suresh Gupta <B42813@freescale.com>
Signed-off-by: Yinbo Zhu <yinbo.zhu@nxp.com>
Link: https://lore.kernel.org/r/20190624072219.15258-2-yinbo.zhu@nxp.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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USB: host: ehci: Remove redundant license text

Now that the SPDX tag is in all USB files, that identifies the license
in a specific and legally-defined manner. So the extra GPL text wording
can be

USB: host: ehci: Remove redundant license text

Now that the SPDX tag is in all USB files, that identifies the license
in a specific and legally-defined manner. So the extra GPL text wording
can be removed as it is no longer needed at all.

This is done on a quest to remove the 700+ different ways that files in
the kernel describe the GPL license text. And there's unneeded stuff
like the address (sometimes incorrect) for the FSF which is never
needed.

No copyright headers or other non-license-description text was removed.

Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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USB: add SPDX identifiers to all remaining files in drivers/usb/

It's good to have SPDX identifiers in all files to make it easier to
audit the kernel tree for correct licenses.

Update the drivers/

USB: add SPDX identifiers to all remaining files in drivers/usb/

It's good to have SPDX identifiers in all files to make it easier to
audit the kernel tree for correct licenses.

Update the drivers/usb/ and include/linux/usb* files with the correct
SPDX license identifier based on the license text in the file itself.
The SPDX identifier is a legally binding shorthand, which can be used
instead of the full boiler plate text.

This work is based on a script and data from Thomas Gleixner, Philippe
Ombredanne, and Kate Stewart.

Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Kate Stewart <kstewart@linuxfoundation.org>
Cc: Philippe Ombredanne <pombredanne@nexb.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Acked-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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drivers: usb: fsl: Define usb control register mask for w1c bits

Define and use CONTROL_REGISTER_W1C_MASK to make sure that
w1c bits of usb control register do not get reset while
writing any other

drivers: usb: fsl: Define usb control register mask for w1c bits

Define and use CONTROL_REGISTER_W1C_MASK to make sure that
w1c bits of usb control register do not get reset while
writing any other bit

Signed-off-by: Nikhil Badola <nikhil.badola@freescale.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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powerpc/usb: fix bug of CPU hang when missing USB PHY clock

when missing USB PHY clock, kernel booting up will hang during USB
initialization. We should check USBGP[PHY_CLK_VALID] bit to avoid
CPU h

powerpc/usb: fix bug of CPU hang when missing USB PHY clock

when missing USB PHY clock, kernel booting up will hang during USB
initialization. We should check USBGP[PHY_CLK_VALID] bit to avoid
CPU hanging in this case.

Signed-off-by: Shengzhou Liu <Shengzhou.Liu@freescale.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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fsl/usb: Add controller version based ULPI and UTMI phy support

Add support for ULPI and UTMI PHYs based on usb controller
version info read from device-tree

Example of USB Controller versioning in

fsl/usb: Add controller version based ULPI and UTMI phy support

Add support for ULPI and UTMI PHYs based on usb controller
version info read from device-tree

Example of USB Controller versioning info:
Version 1.2 and below : MPC8536, MPC8315, etc
Version 1.6 : P1020, P1010, P2020, P5020, etc
Version 2.2 : PSC9131, PSC9132, P3060, etc

No changes for non-DT users

Signed-off-by: Ramneek Mehresh <ramneek.mehresh@freescale.com>
Acked-by: Li Yang <leoli@freescale.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Revert "powerpc/usb: fix issue of CPU halt when missing USB PHY clock"

This reverts commit 529febeee680dc22416fca033151a5e8bc620447.

To quote Dirk:
This commit introduces a check for the USB PHY c

Revert "powerpc/usb: fix issue of CPU halt when missing USB PHY clock"

This reverts commit 529febeee680dc22416fca033151a5e8bc620447.

To quote Dirk:
This commit introduces a check for the USB PHY clock.
Problem is that CTRL_PHY_CLK_VALID bit seems not to be present
on all Freescale ehci implementations, at least P1022 does not
have it. So this check always fails and the driver never gets
loaded.

So we need to revert this patch.

Reported-by: Dirk Eibach <Eibach@gdsys.de>
Cc: Shengzhou Liu <Shengzhou.Liu@freescale.com>
Cc: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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powerpc/usb: fix bug of kernel hang when initializing usb

If USB UTMI PHY is not enable, writing to portsc register will lead to
kernel hang during boot up.

Signed-off-by: Shengzhou Liu <Shengzhou.

powerpc/usb: fix bug of kernel hang when initializing usb

If USB UTMI PHY is not enable, writing to portsc register will lead to
kernel hang during boot up.

Signed-off-by: Shengzhou Liu <Shengzhou.Liu@freescale.com>
Reported-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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powerpc/usb: fix issue of CPU halt when missing USB PHY clock

when missing USB PHY clock, kernel booting up will halt during USB
initialization. We should check USBGP[PHY_CLK_VALID] bit to avoid
CPU

powerpc/usb: fix issue of CPU halt when missing USB PHY clock

when missing USB PHY clock, kernel booting up will halt during USB
initialization. We should check USBGP[PHY_CLK_VALID] bit to avoid
CPU hang in this case.

Signed-off-by: Shengzhou Liu <Shengzhou.Liu@freescale.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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usb: ehci-fsl: set INCR8 mode for system bus interface on MPC512x

Use INCR8 mode for system bus interface of the USB controller
on MPC512x. This is a work-around for the AHB bus lock up
problem obse

usb: ehci-fsl: set INCR8 mode for system bus interface on MPC512x

Use INCR8 mode for system bus interface of the USB controller
on MPC512x. This is a work-around for the AHB bus lock up
problem observed on MPC512x when there is heavy simultaneous
PATA write or network (FEC) activity.

See also "12.4 The USB controller can issue transactions that lock
up the AHB bus under certain conditions" in MPC5121e (M36P) Errata.

Signed-off-by: Anatolij Gustschin <agust@denx.de>
Tested-by: Matthias Fuchs <matthias.fuchs@esd.ue>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

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USB: ehci-fsl: add MPC5121E specific suspend and resume

Signed-off-by: Anatolij Gustschin <agust@denx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

USB: ehci-fsl: Fix 'have_sysif_regs' detection

Previously a check was done on an ID register at the base of a CPU's
internal USB registers to determine if system interface regsiters were
present. T

USB: ehci-fsl: Fix 'have_sysif_regs' detection

Previously a check was done on an ID register at the base of a CPU's
internal USB registers to determine if system interface regsiters were
present. The check looked for an ID register that had the format
ID[0:5] == ~ID[8:13] as described in the MPC5121 User's Manual to
determine if a MPC5121 or MPC83xx/85xx was being used.

There are two issues with this method:
- The ID register is not defined on the MPC83xx/85xx CPUs, so its
unclear what is being checked on them.
- Newer CPUs such as the P4080 also don't document the ID register, but
do share the same format as the MPC5121. Thus the previous code did
not set 'have_sysif_regs' properly which results in the P4080 not
properly initializing its USB ports.

Using the device tree 'compatible' node is a cleaner way to determine if
'have_sysif_regs' should be set and resolves the USB initialization issue
seen on the P4080.

Tested on a P4080-based system and compile tested on mpc512x_defconfig
with Freescale EHCI driver enabled.

Cc: Anatolij Gustschin <agust@denx.de>
Cc: David Brownell <dbrownell@users.sourceforge.net>
Cc: Kumar Gala <galak@kernel.crashing.org>
Cc: linuxppc-dev@lists.ozlabs.org
Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

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USB: add USB EHCI support for MPC5121 SoC

Extends FSL EHCI platform driver glue layer to support
MPC5121 USB controllers. MPC5121 Rev 2.0 silicon EHCI
registers are in big endian format. The appropr

USB: add USB EHCI support for MPC5121 SoC

Extends FSL EHCI platform driver glue layer to support
MPC5121 USB controllers. MPC5121 Rev 2.0 silicon EHCI
registers are in big endian format. The appropriate flags
are set using the information in the platform data structure.
MPC83xx system interface registers are not available on
MPC512x, so the access to these registers is isolated in
MPC512x case. Furthermore the USB controller clocks
must be enabled before 512x register accesses which is
done by providing platform specific init callback.

The MPC512x internal USB PHY doesn't provide supply voltage.
For boards using different power switches allow specifying
DRVVBUS and PWR_FAULT signal polarity of the MPC5121 internal
PHY using "fsl,invert-drvvbus" and "fsl,invert-pwr-fault"
properties in the device tree USB nodes. Adds documentation
for this new device tree bindings.

Signed-off-by: Anatolij Gustschin <agust@denx.de>
Cc: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

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USB: ehci tdi : let's tdi_reset set host mode

tdi_reset is already taking care of setting host mode for tdi devices.
Don't duplicate code in platform driver.

Make ehci_halt a nop if the controller

USB: ehci tdi : let's tdi_reset set host mode

tdi_reset is already taking care of setting host mode for tdi devices.
Don't duplicate code in platform driver.

Make ehci_halt a nop if the controller is not in host mode (otherwise it
will fail), and let's ehci_reset do the tdi_reset.
We need to move hcd->has_tt flags before ehci_halt, in order ehci_halt
knows we are a tdi device.


Before the setup routine was doing :
- put controller in host mode
- ehci_halt
- ehci_init
- hcd->has_tt = 1;
- ehci_reset

Now we do :
- hcd->has_tt = 1;
- ehci_halt
- ehci_init
- ehci_reset

PS : now we handle correctly the device -> host transition.

Signed-off-by: Matthieu CASTET <matthieu.castet@parrot.com>
Cc: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

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ehci-fsl: fix cache coherency problem on system with large memory

The patch fixes bug http://bugzilla.kernel.org/show_bug.cgi?id=7482.

It sets USB snooping on 4G space for PowerPC platforms without

ehci-fsl: fix cache coherency problem on system with large memory

The patch fixes bug http://bugzilla.kernel.org/show_bug.cgi?id=7482.

It sets USB snooping on 4G space for PowerPC platforms without
CONFIG_NOT_COHERENT_CACHE defined.

Reported-by: Stefan Meyer <reyems@telkomsa.net>
Signed-off-by: Li Yang <leoli@freescale.com>
Cc: Greg KH <greg@kroah.com>
Cc: David Brownell <david-b@pacbell.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

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ehci-fsl: change SI_CTRL, PRI_CTRL register offsets according to errata

Correct the offsets of the SI_CTRL, PRI_CTRL registers according to
the Reference Manual errata sheet in order to prevent unwa

ehci-fsl: change SI_CTRL, PRI_CTRL register offsets according to errata

Correct the offsets of the SI_CTRL, PRI_CTRL registers according to
the Reference Manual errata sheet in order to prevent unwanted
settings regarding burst transactions and priority states.

Signed-off-by: Christian Engelmayer <Christian.Engelmayer@frequentis.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

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[PATCH] USB: EHCI for Freescale 83xx

Adding a Host Mode USB driver for the Freescale 83xx.

This driver supports both the Dual-Role (DR) controller and the
Multi-Port-Host (MPH) controller present i

[PATCH] USB: EHCI for Freescale 83xx

Adding a Host Mode USB driver for the Freescale 83xx.

This driver supports both the Dual-Role (DR) controller and the
Multi-Port-Host (MPH) controller present in the Freescale MPC8349. It has
been tested with the MPC8349CDS reference system. This driver depends on
platform support code for setting up the pins on the device package in a
manner appropriate for the board in use. Note that this patch requires
selecting the EHCI controller option under the USB Host menu.

Signed-off-by: Randy Vinson <rvinson@mvista.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

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USB: host: Use the correct style for SPDX License Identifier

This patch corrects the SPDX License Identifier style in
header files related to USB host controller drivers.
For C heade

USB: host: Use the correct style for SPDX License Identifier

This patch corrects the SPDX License Identifier style in
header files related to USB host controller drivers.
For C header files Documentation/process/license-rules.rst
mandates C-like comments (opposed to C source files where
C++ style should be used).

Changes made by using a script provided by Joe Perches here:
https://lkml.org/lkml/2019/2/7/46.

Suggested-by: Joe Perches <joe@perches.com>
Signed-off-by: Nishad Kamdar <nishadkamdar@gmail.com>
Link: https://lore.kernel.org/r/20200404092135.GA4522@nishad
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

show more ...

usb: phy: Workaround for USB erratum-A005728

PHY_CLK_VALID bit for UTMI PHY in USBDR does not set even
if PHY is providing valid clock. Workaround for this
involves resetting of PHY

usb: phy: Workaround for USB erratum-A005728

PHY_CLK_VALID bit for UTMI PHY in USBDR does not set even
if PHY is providing valid clock. Workaround for this
involves resetting of PHY and check PHY_CLK_VALID bit
multiple times. If PHY_CLK_VALID bit is still not set even
after 5 retries, it would be safe to deaclare that PHY
clock is not available.
This erratum is applicable for USBDR less then ver 2.4.

Signed-off-by: Suresh Gupta <B42813@freescale.com>
Signed-off-by: Yinbo Zhu <yinbo.zhu@nxp.com>
Link: https://lore.kernel.org/r/20190624072219.15258-2-yinbo.zhu@nxp.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

show more ...

USB: host: ehci: Remove redundant license text

Now that the SPDX tag is in all USB files, that identifies the license
in a specific and legally-defined manner. So the extra GPL text wor

USB: host: ehci: Remove redundant license text

Now that the SPDX tag is in all USB files, that identifies the license
in a specific and legally-defined manner. So the extra GPL text wording
can be removed as it is no longer needed at all.

This is done on a quest to remove the 700+ different ways that files in
the kernel describe the GPL license text. And there's unneeded stuff
like the address (sometimes incorrect) for the FSF which is never
needed.

No copyright headers or other non-license-description text was removed.

Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

show more ...

USB: add SPDX identifiers to all remaining files in drivers/usb/

It's good to have SPDX identifiers in all files to make it easier to
audit the kernel tree for correct licenses.

USB: add SPDX identifiers to all remaining files in drivers/usb/

It's good to have SPDX identifiers in all files to make it easier to
audit the kernel tree for correct licenses.

Update the drivers/usb/ and include/linux/usb* files with the correct
SPDX license identifier based on the license text in the file itself.
The SPDX identifier is a legally binding shorthand, which can be used
instead of the full boiler plate text.

This work is based on a script and data from Thomas Gleixner, Philippe
Ombredanne, and Kate Stewart.

Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Kate Stewart <kstewart@linuxfoundation.org>
Cc: Philippe Ombredanne <pombredanne@nexb.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Acked-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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drivers: usb: fsl: Define usb control register mask for w1c bits

Define and use CONTROL_REGISTER_W1C_MASK to make sure that
w1c bits of usb control register do not get reset while
wr

drivers: usb: fsl: Define usb control register mask for w1c bits

Define and use CONTROL_REGISTER_W1C_MASK to make sure that
w1c bits of usb control register do not get reset while
writing any other bit

Signed-off-by: Nikhil Badola <nikhil.badola@freescale.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

show more ...

powerpc/usb: fix bug of CPU hang when missing USB PHY clock

when missing USB PHY clock, kernel booting up will hang during USB
initialization. We should check USBGP[PHY_CLK_VALID] bit to

powerpc/usb: fix bug of CPU hang when missing USB PHY clock

when missing USB PHY clock, kernel booting up will hang during USB
initialization. We should check USBGP[PHY_CLK_VALID] bit to avoid
CPU hanging in this case.

Signed-off-by: Shengzhou Liu <Shengzhou.Liu@freescale.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

show more ...

fsl/usb: Add controller version based ULPI and UTMI phy support

Add support for ULPI and UTMI PHYs based on usb controller
version info read from device-tree

Example of USB Cont

fsl/usb: Add controller version based ULPI and UTMI phy support

Add support for ULPI and UTMI PHYs based on usb controller
version info read from device-tree

Example of USB Controller versioning info:
Version 1.2 and below : MPC8536, MPC8315, etc
Version 1.6 : P1020, P1010, P2020, P5020, etc
Version 2.2 : PSC9131, PSC9132, P3060, etc

No changes for non-DT users

Signed-off-by: Ramneek Mehresh <ramneek.mehresh@freescale.com>
Acked-by: Li Yang <leoli@freescale.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

show more ...