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The XR21B1421, XR21B1422 and XR21B1424 are the one-, two- and four-port
models of a second XR21B142X type of the Maxlinear/Exar USB UARTs.
The XR21B142X type differs from XR21V141X in several ways, including:
- register layout
- register width (16-bit instead of 8-bit)
- vendor register requests
- UART enable/disable sequence
- custom-driver mode flag
- three additional GPIOs (9 instead of 6)
As for XR21V141X, the XR21B142X vendor requests encode the channel index
in the MSB of wIndex, but it lacks the UART Manager registers which
have been replaced by regular UART registers. The new type also uses the
interface number of the control interface (0, 2, 4, 6) as channel index
instead of the channel number (0, 1, 2, 3).
The XR21B142X lacks the divisor and format registers used by XR21V141X
and instead uses the CDC SET_LINE_CONTROL request to configure the line
settings.
Note that the currently supported XR21V141X type lacks the custom-driver
mode flag that prevents the device from entering CDC-ACM mode when a CDC
requests is received. This specifically means that the SET_LINE_CONTROL
request cannot be used with XR21V141X even though it is otherwise
supported.
The UART enable sequence for XR21B142X does not involve explicitly
enabling the FIFOs, but according to datasheet the UART must be disabled
when writing any register but GPIO_SET, GPIO_CLEAR, TX_BREAK and
ERROR_STATUS.
Signed-off-by: Johan Hovold <johan@kernel.org>
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There are at least four types of Maxlinear/Exar USB UARTs which differ
in various ways such as in their register layouts:
XR21V141X
XR21B142X
XR21B1411
XR22804
It is not clear whether the device type can be inferred from the
descriptors so encode it in the device-id table for now.
Add a type structure that can be used to abstract the register layout
and other features, and use it when accessing the XR21V141X UART
registers that are shared by all types.
Note that the currently supported XR21V141X type is the only type that
has a set of UART Manager registers and that these will need to be
handled specifically.
Similarly, XR21V141X is the only type which has the divisor registers
and that needs to use the format register when configuring the line
settings.
Signed-off-by: Johan Hovold <johan@kernel.org>
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In preparation for adding support for further types, drop the type
prefix from defines that are not specific to XR21V141X.
Signed-off-by: Johan Hovold <johan@kernel.org>
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There's no need to configure the pins on every open and judging from the
vendor driver and datasheet it can be done before enabling the UART.
Move pin configuration from open() to port probe and make sure to
deassert DTR and RTS after configuring all pins as GPIO.
Signed-off-by: Johan Hovold <johan@kernel.org>
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Rename the GPIO-pin defines so that they reflect how they are used.
Signed-off-by: Johan Hovold <johan@kernel.org>
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Rename the GPIO mode defines so that they reflect the datasheet and how
they are used.
Signed-off-by: Johan Hovold <johan@kernel.org>
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Add support for the two- and four-port variants of XR21V1410.
Use the interface number of each control interface (e.g. 0, 2, 4, 6) to
derive the zero-based channel index:
XR21V1410 0
XR21V1412 0, 1
XR21V1414 0, 1, 2, 3
Note that the UART registers reside in separate blocks per channel,
while the UART Manager functionality is implemented using per-channel
registers.
Signed-off-by: Johan Hovold <johan@kernel.org>
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Remove the random white space from the CSIZE switch.
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
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Replace the remaining uses of user-space __XX types.
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
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Add two port-command helpers to handle the UART module-id parameter
instead of open coding.
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
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Make the vendor-request helpers data parameters be void pointers and
drop the caller casts.
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
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Drop unnecessary packed attributes from structures that don't need it.
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
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Drop unnecessary packed attributes from structures that don't need it
and use the __packed macro consistently.
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
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Use kernel types consistently by replacing the remaining __uXX types.
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
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Add a read-port-command helper analogous to the send-port-command
helper to take care of the UART module id instead of open coding.
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
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Add a send-port-command helper which takes care of determining the UART
module id when sending commands instead of doing so at every call site.
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
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Clean up the vendor-request helpers by using kernel-types consistently
and using void pointers for the data arguments, which allows removing
a cast from one caller.
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
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Unlike the TUSB5052, the TUSB3410 has an LSR TEMT bit to tell if both
the transmitter data and shift registers are empty.
Make sure to check also the shift register on TUSB3410 when waiting for
the transmit buffer to drain during close and drop the time-based
one-char delay which is otherwise needed (e.g. 90 ms at 110 bps).
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
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The three-character drain delay was added by commit f1175daa5312 ("USB:
ti_usb_3410_5052: kill custom closing_wait") when removing the custom
closing-wait implementation, which used a fixed 20 ms poll period and
drain delay.
This was likely a bit too conservative as a one-character timeout (e.g.
33 ms at 300 bps) should be enough to compensate for the lack of a
transmitter empty bit in the TUSB5052 line-status register.
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
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Document that the device line-status register doesn't tell when the
transmitter shift register has emptied and that this is why the
one-character drain delay is needed.
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
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The f81232 driver now waits for the transmit FIFO to drain during close
so there is no need to keep the time-based drain delay, which would add
up to two seconds on every close for low line speeds.
Fixes: 98405f81036d ("USB: serial: f81232: add tx_empty function")
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
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Lightnvm was an innovative idea to expose more low-level control over SSDs.
But it failed to get properly standardized and remains a non-standarized
extension to NVMe that requires vendor specific quirks for a few now mostly
obsolete SSD devices. The standardized ZNS command set for NVMe has take
over a lot of the approaches and allows for fully standardized operation.
Remove the Linux code to support open channel SSDs as the few production
deployments of the above mentioned SSDs are using userspace driver stacks
instead of the fairly limited Linux support.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Javier González <javier@javigon.com>
Signed-off-by: Matias Bjørling <mb@lightnvm.io>
Link: https://lore.kernel.org/r/20210413105257.159260-5-matias.bjorling@wdc.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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When memdup_user returns an error, memdup_user has two different return
values, use PTR_ERR to get the correct return value.
Signed-off-by: Tian Tao <tiantao6@hisilicon.com>
Signed-off-by: Matias Bjørling <matias.bjorling@wdc.com>
Link: https://lore.kernel.org/r/20210413105257.159260-3-matias.bjorling@wdc.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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This fixs coccicheck warning:
drivers/nvme//host/lightnvm.c:1243:60-61: WARNING opportunity for
kobj_to_dev()
Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Signed-off-by: Matias Bjørling <matias.bjorling@wdc.com>
Link: https://lore.kernel.org/r/20210413105257.159260-2-matias.bjorling@wdc.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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Normally, If the smi-larb HW need work, we should enable the smi-common
HW power and clock firstly.
This patch adds device-link between the smi-larb dev and the smi-common
dev. then If pm_runtime_get_sync(smi-larb-dev), the pm_runtime_get_sync
(smi-common-dev) will be called automatically.
Also, Add DL_FLAG_STATELESS to avoid the smi-common clocks be gated when
probe.
CC: Matthias Brugger <matthias.bgg@gmail.com>
Suggested-by: Tomasz Figa <tfiga@chromium.org>
Signed-off-by: Yong Wu <yong.wu@mediatek.com>
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Link: https://lore.kernel.org/r/20210410091128.31823-5-yong.wu@mediatek.com
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clk_set_parent() can fail and ignoring such case could lead to invalid
clock setup for given frequency.
Addresses-Coverity: Unchecked return value
Fixes: 6e7674c3c6df ("memory: Add DMC driver for Exynos5422")
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Reviewed-by: Lukasz Luba <lukasz.luba@arm.com>
Link: https://lore.kernel.org/r/20210407154535.70756-1-krzysztof.kozlowski@canonical.com
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The platform_get_resource_byname() can return NULL which would be
immediately dereferenced by resource_size(). Instead dereference it
after validating the resource.
Addresses-Coverity: Dereference null return value
Fixes: ca7d8b980b67 ("memory: add Renesas RPC-IF driver")
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Link: https://lore.kernel.org/r/20210407154357.70200-1-krzysztof.kozlowski@canonical.com
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When mmaping an extra device region verify that the region index
derived from the mmap offset is valid.
Fixes: a15b1883fee1 ("vfio_pci: Allow mapping extra regions")
Cc: stable@vger.kernel.org
Signed-off-by: Christian A. Ehrhardt <lk@c--e.de>
Message-Id: <20210412214124.GA241759@lisa.in-ulm.de>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
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The DSDT and ACPI should be capitalized.
Signed-off-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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The macro requires to call acpi_dev_put() on each iteration.
Due to this it doesn't tolerate sudden disappearence of the devices.
Document all these nuances to prevent users blindly call it without
understanding the possible issues.
While at it, add the note to the acpi_dev_get_next_match_dev() and
advertise acpi_dev_put() instead of put_device() in the whole family
of the helper functions.
Fixes: bf263f64e804 ("media: ACPI / bus: Add acpi_dev_get_next_match_dev() and helper macro")
Signed-off-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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Introduce acpi_dev_get() to have a symmetrical API with acpi_dev_put()
and reuse both in ACPI code in drivers/acpi/.
While at it, use acpi_bus_put_acpi_device() in one place instead of
the above.
Signed-off-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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When updating pin names for Intel Lewisburg, the numbers of pins were
left behind. Update them accordingly.
Fixes: e66ff71fd0db ("pinctrl: lewisburg: Update pin list according to v1.1v6")
Signed-off-by: Yuanyuan Zhong <yzhong@purestorage.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
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When dwc2 core is in clock gating mode loading driver
again causes driver fail. Because in that mode
registers are not accessible.
Added a flow of exiting clock gating mode
to avoid the driver reload failure.
Signed-off-by: Artur Petrosyan <Arthur.Petrosyan@synopsys.com>
Link: https://lore.kernel.org/r/20210413073731.3C81BA022E@mailhost.synopsys.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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If not hibernation nor partial power down are supported,
port resume is done using the clock gating programming flow.
Adds a new flow of exiting clock gating when PC is
resumed.
Signed-off-by: Artur Petrosyan <Arthur.Petrosyan@synopsys.com>
Link: https://lore.kernel.org/r/20210413073723.BA0FEA022E@mailhost.synopsys.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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If not hibernation nor partial power down are supported,
clock gating is used to save power.
Adds a new flow of entering clock gating when PC is
suspended.
Signed-off-by: Artur Petrosyan <Arthur.Petrosyan@synopsys.com>
Link: https://lore.kernel.org/r/20210413073716.30C13A0094@mailhost.synopsys.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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When core is in clock gating state and an external
hub is connected, upper layer sends URB enqueue request,
which results in port reset issue.
Added exit from clock gating state to avoid port
reset issue and process upper layer request properly.
Signed-off-by: Artur Petrosyan <Arthur.Petrosyan@synopsys.com>
Link: https://lore.kernel.org/r/20210413073708.ADFC6A0094@mailhost.synopsys.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Updates the implementation of exiting clock gating mode
when core receives port resume.
Instead of setting the required bit fields of the registers
inline, called the "dwc2_host_exit_clock_gating()" function.
Signed-off-by: Artur Petrosyan <Arthur.Petrosyan@synopsys.com>
Link: https://lore.kernel.org/r/20210413073701.367E0A022E@mailhost.synopsys.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Updates the implementation of entering clock gating mode
when core receives port suspend.
Instead of setting the required bit fields of the registers
inline, called the "dwc2_host_enter_clock_gating()" function.
Signed-off-by: Artur Petrosyan <Arthur.Petrosyan@synopsys.com>
Link: https://lore.kernel.org/r/20210413073653.9F493A0094@mailhost.synopsys.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Adds clock gating exit flow when set port feature
reset is received in suspended state.
Signed-off-by: Artur Petrosyan <Arthur.Petrosyan@synopsys.com>
Link: https://lore.kernel.org/r/20210413073646.27217A0094@mailhost.synopsys.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Added clock gating exit flow from session
request interrupt handler according programming guide.
Signed-off-by: Artur Petrosyan <Arthur.Petrosyan@synopsys.com>
Link: https://lore.kernel.org/r/20210413073638.921E8A0099@mailhost.synopsys.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Added exit from clock gating mode when wakeup interrupt
is detected. To exit from the clock gating
in device mode "dwc2_gadget_exit_clock_gating()"
function is used with rem_wakeup parameter 0. To exit
clock gating in host mode "dwc2_host_exit_clock_gating()"
with rem_wakeup parameter 1.
Acked-by: Minas Harutyunyan <Minas.Harutyunyan@synopsys.com>
Signed-off-by: Artur Petrosyan <Arthur.Petrosyan@synopsys.com>
Link: https://lore.kernel.org/r/20210413073630.EF2CEA0094@mailhost.synopsys.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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If core doesn't support hibernation or partial power
down power saving options, power can still be saved
using clock gating on all the clocks.
- Added entering clock gating state from USB_SUSPEND
interrupt.
Acked-by: Minas Harutyunyan <Minas.Harutyunyan@synopsys.com>
Signed-off-by: Artur Petrosyan <Arthur.Petrosyan@synopsys.com>
Link: https://lore.kernel.org/r/20210413073623.65355A022E@mailhost.synopsys.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Added host clock gating support functions according
programming guide.
Added function names:
dwc2_host_enter_clock_gating()
dwc2_host_exit_clock_gating()
Acked-by: Minas Harutyunyan <Minas.Harutyunyan@synopsys.com>
Signed-off-by: Artur Petrosyan <Arthur.Petrosyan@synopsys.com>
Link: https://lore.kernel.org/r/20210413073615.B3E84A022E@mailhost.synopsys.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Added device clock gating support functions according
programming guide.
Moved "bus_suspended" flag to "dwc2_hsotg" struct because
we need to set that flag while entering to clock gating
in case when the driver is built in peripheral mode.
Added function names:
dwc2_gadget_enter_clock_gating()
dwc2_gadget_exit_clock_gating()
Acked-by: Minas Harutyunyan <Minas.Harutyunyan@synopsys.com>
Signed-off-by: Artur Petrosyan <Arthur.Petrosyan@synopsys.com>
Link: https://lore.kernel.org/r/20210413073607.F41E8A0094@mailhost.synopsys.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/westeri/thunderbolt into usb-next
Mika writes:
thunderbolt: Changes for v5.13 merge window
This includes following Thunderbolt/USB4 changes for v5.13 merge window:
* Debugfs improvements
* Align the inter-domain (peer-to-peer) support with the USB4
inter-domain spec for better interoperability
* Add support for USB4 DROM and the new product descriptor
* More KUnit tests
* Detailed uevent for routers
* Few miscellaneous improvements
All these have been in linux-next without reported issues.
* tag 'thunderbolt-for-v5.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/westeri/thunderbolt: (24 commits)
thunderbolt: Hide authorized attribute if router does not support PCIe tunnels
thunderbolt: Add details to router uevent
thunderbolt: Unlock on error path in tb_domain_add()
thunderbolt: Add support for USB4 DROM
thunderbolt: Check quirks in tb_switch_add()
thunderbolt: Add KUnit tests for DMA tunnels
thunderbolt: Add KUnit tests for XDomain properties
net: thunderbolt: Align the driver to the USB4 networking spec
thunderbolt: Allow multiple DMA tunnels over a single XDomain connection
thunderbolt: Drop unused tb_port_set_initial_credits()
thunderbolt: Use dedicated flow control for DMA tunnels
thunderbolt: Add support for maxhopid XDomain property
thunderbolt: Add tb_property_copy_dir()
thunderbolt: Align XDomain protocol timeouts with the spec
thunderbolt: Use pseudo-random number as initial property block generation
thunderbolt: Do not re-establish XDomain DMA paths automatically
thunderbolt: Add more logging to XDomain connections
Documentation / thunderbolt: Drop speed/lanes entries for XDomain
thunderbolt: Decrease control channel timeout for software connection manager
thunderbolt: Do not pass timeout for tb_cfg_reset()
...
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git://git.kernel.org/pub/scm/linux/kernel/git/leo/linux into arm/drivers
NXP/FSL SoC driver updates for v5.13
- Add ACPI support for RCPM driver
- Use generic io{read,write} for QE drivers after performance optimized
for PowerPC
- Fix QBMAN probe to cleanup HW states correctly for kexec
- Various cleanup and style fix for QBMAN/QE/GUTS drivers
* tag 'soc-fsl-next-v5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/leo/linux:
soc: fsl: enable acpi support in RCPM driver
Revert "soc: fsl: qe: introduce qe_io{read,write}* wrappers"
tty: serial: ucc_uart: replace qe_io{read,write}* wrappers by generic io{read,write}*
soc: fsl: qe: replace qe_io{read,write}* wrappers by generic io{read,write}*
soc: fsl: guts: fix comment syntax in file
soc: fsl: guts: remove unneeded semicolon
soc: fsl: qe: Use DEFINE_SPINLOCK() for spinlock
soc: fsl: qbman: Delete useless kfree code
soc: fsl: qbman: Ensure device cleanup is run for kexec
Link: https://lore.kernel.org/r/20210409205719.27927-1-leoyang.li@nxp.com
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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into arm/drivers
arm64: soc: ZynqMP SoC changes for v5.13
- Fix firmware removal path
- Cleanup eemi doc and *ops()
* tag 'zynqmp-soc-for-v5.13' of https://github.com/Xilinx/linux-xlnx:
firmware: xilinx: Remove zynqmp_pm_get_eemi_ops() in IS_REACHABLE(CONFIG_ZYNQMP_FIRMWARE)
firmware: xilinx: Fix dereferencing freed memory
Link: https://lore.kernel.org/r/a44f8e9f-cea7-57ef-c3bc-10f5f5e064fc@monstr.eu
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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Tested with
* X570 I Aorus Pro Wifi (rev 1.0)
* B550M DS3H
* B550 Gaming X V2 (rev.1.x)
* Z390 I AORUS PRO WIFI (rev. 1.0)
Those mainboards contain an ITE chips for management and
monitoring.
They could also be handled by drivers/hwmon/i87.c.
But the SuperIO range used by i87 is already claimed and used by the
firmware.
The following warning is printed at boot:
kernel: ACPI Warning: SystemIO range 0x0000000000000A45-0x0000000000000A46 conflicts with OpRegion 0x0000000000000A45-0x0000000000000A46 (\GSA1.SIO1) (20200528/utaddress-204)
kernel: ACPI: This conflict may cause random problems and system instability
kernel: ACPI: If an ACPI driver is available for this device, you should use it instead of the native driver
This driver implements such an ACPI driver.
Unfortunately not all sensor registers are handled by the firmware and even
less are exposed via WMI.
Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20210412123513.628901-1-linux@weissschuh.net
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
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Use devm_add_action_or_reset() instead of devres_alloc() and
devres_add(), which works the same. This will simplify the
code. There is no functional changes.
Signed-off-by: Tian Tao <tiantao6@hisilicon.com>
Link: https://lore.kernel.org/r/1618275183-56792-1-git-send-email-tiantao6@hisilicon.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Removed unncessary ftrace-like logging by simply deleting that statement
as we have other modes of logging like ftrace.
Reported by checkpatch.
Signed-off-by: Mitali Borkar <mitaliborkar810@gmail.com>
Link: https://lore.kernel.org/r/460ba9cdd256bf1064c4e3a694caa046171cb60e.1618283232.git.mitaliborkar810@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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