| Commit message (Collapse) | Author | Age | Files | Lines |
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of_touchscreen.c provides a common interface for a axis inversion and
swapping of touchscreens. Therefore use it in the sx8654 driver.
Signed-off-by: Richard Leitner <richard.leitner@skidata.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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The sx8654 and sx8650 are quite similar, therefore add support for the
sx8650 within the sx8654 driver.
Signed-off-by: Richard Leitner <richard.leitner@skidata.com>
Reviewed-by: Rob Herring <robh@kernel.org>
[dtor: use __be16 in sx8650_irq, add missing del_timer_sync]
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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As the sx865[456] share the same datasheet and differ only in the
presence of a "capacitive proximity detection circuit" and a "haptics
motor driver for LRA/ERM" add them to the compatbiles. As the driver
doesn't implement these features it should be no problem.
Signed-off-by: Richard Leitner <richard.leitner@skidata.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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The sx8654 features a NRST input which may be connected to a GPIO.
Therefore add support for hard-resetting the sx8654 via this NRST.
If the reset-gpio property is provided the sx8654 is resetted via NRST
instead of the soft-reset via I2C.
Signed-off-by: Richard Leitner <richard.leitner@skidata.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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This adds myself as an author of the st1232 driver module as Tony's
email address doesn't seem to work anymore.
Signed-off-by: Martin Kepplinger <martin.kepplinger@ginzinger.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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Add support for the Sitronix ST1633 touchscreen controller to the st1232
driver. A protocol spec can be found here:
www.ampdisplay.com/documents/pdf/AM-320480B6TZQW-TC0H.pdf
Signed-off-by: Martin Kepplinger <martin.kepplinger@ginzinger.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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Unfortunately the evervision focaltech implementation uses two offset
registers, one for the x coordinate and one for y.
This patch extends the driver to handle those offset registers only for
devices that support these.
Signed-off-by: Marco Felsch <m.felsch@pengutronix.de>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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Currently only the threshold and gain parameters can be read.
Signed-off-by: Marco Felsch <m.felsch@pengutronix.de>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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Evervision displays are using different Focaltech touchscreen
controllers. This commit adds the initial support for the ones using the
FT5726 controller. Receiving the touch data is the same as for the
GENERIC_FT but the x and y cooridnates are swapped. The main differences
are the register addresses where the GAIN and THRESHOLD parameters are
stored.
Signed-off-by: Marco Felsch <m.felsch@pengutronix.de>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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iSOrt includes in alphabetical order and remove duplicated include file
linux/kernel.h
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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One of the more common cases of allocation size calculations is finding the
size of a structure that has a zero-sized array at the end, along with memory
for some number of elements for that array. For example:
struct foo {
int stuff;
void *entry[];
};
instance = kzalloc(sizeof(struct foo) + sizeof(void *) * count, GFP_KERNEL);
Instead of leaving these open-coded and prone to type mistakes, we can now
use the new struct_size() helper:
instance = kzalloc(struct_size(instance, entry, count), GFP_KERNEL);
This code was detected with the help of Coccinelle.
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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One of the more common cases of allocation size calculations is finding the
size of a structure that has a zero-sized array at the end, along with
memory for some number of elements for that array. For example:
struct foo {
int stuff;
void *entry[];
};
instance = kzalloc(sizeof(struct foo) + sizeof(void *) * count, GFP_KERNEL);
Instead of leaving these open-coded and prone to type mistakes, we can now
use the new struct_size() helper:
instance = kzalloc(struct_size(instance, entry, count), GFP_KERNEL);
This code was detected with the help of Coccinelle.
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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Merge with mainline to bring in the new APIs.
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git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
Pull input fixes from Dmitry Torokhov:
"Switching a few devices with Synaptics over to SMbus and disabling
SMbus on a couple devices with Elan touchpads as they need more
plumbing on PS/2 side"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
Input: synaptics - enable SMBus for HP EliteBook 840 G4
Input: elantech - disable elan-i2c for P52 and P72
Input: synaptics - enable RMI on ThinkPad T560
Input: omap-keypad - fix idle configuration to not block SoC idle states
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dmesg reports that "Your touchpad (PNP: SYN3052 SYN0100 SYN0002 PNP0f13)
says it can support a different bus."
I've tested the offered psmouse.synaptics_intertouch=1 with 4.18.x and
4.19.x and it seems to work well. No problems seen with suspend/resume.
Also, it appears that RMI/SMBus mode is actually required for 3-4 finger
multitouch gestures to work -- otherwise they are not reported at all.
Information from dmesg in both modes:
psmouse serio3: synaptics: Touchpad model: 1, fw: 8.2, id: 0x1e2b1,
caps: 0xf00123/0x840300/0x2e800/0x0, board id: 3139, fw id: 2000742
psmouse serio3: synaptics: Trying to set up SMBus access
rmi4_smbus 6-002c: registering SMbus-connected sensor
rmi4_f01 rmi4-00.fn01: found RMI device,
manufacturer: Synaptics, product: TM3139-001, fw id: 2000742
Signed-off-by: Mantas Mikulėnas <grawity@gmail.com>
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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The current implementation of elan_i2c is known to not support those
2 laptops.
A proper fix is to tweak both elantech and elan_i2c to transmit the
correct information from PS/2, which would make a bad candidate for
stable.
So to give us some time for fixing the root of the problem, disable
elan_i2c for the devices we know are not behaving properly.
Link: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1803600
Link: https://bugs.archlinux.org/task/59714
Fixes: df077237cf55 Input: elantech - detect new ICs and setup Host Notify for them
Cc: stable@vger.kernel.org # v4.18+
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Acked-by: Peter Hutterer <peter.hutterer@who-t.net>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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Before commit 7fd6d98b89f3 ("i2c: i801: Allow ACPI AML access I/O
ports not reserved for SMBus"), enabling RMI on the T560 would cause
the touchpad to stop working after resuming from suspend. Now that
this issue is fixed, RMI can be enabled safely and works fine.
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Yussuf Khalil <dev@pp3345.net>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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With PM enabled, I noticed that pressing a key on the droid4 keyboard will
block deeper idle states for the SoC. Let's fix this by using IRQF_ONESHOT
and stop constantly toggling the device OMAP4_KBD_IRQENABLE register as
suggested by Dmitry Torokhov <dmitry.torokhov@gmail.com>.
From the hardware point of view, looks like we need to manage the registers
for OMAP4_KBD_IRQENABLE and OMAP4_KBD_WAKEUPENABLE together to avoid
blocking deeper SoC idle states. And with toggling of OMAP4_KBD_IRQENABLE
register now gone with IRQF_ONESHOT, also the SoC idle state problem is
gone during runtime. We still also need to clear OMAP4_KBD_WAKEUPENABLE in
omap4_keypad_close() though to pair it with omap4_keypad_open() to prevent
blocking deeper SoC idle states after rmmod omap4-keypad.
Reported-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
Pull input updates from Dmitry Torokhov:
"Mostly new IDs for Elan/Synaptics touchpads, plus a few small fixups"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
Input: omap-keypad - fix keyboard debounce configuration
Input: xpad - quirk all PDP Xbox One gamepads
Input: synaptics - enable SMBus for HP 15-ay000
Input: synaptics - add PNP ID for ThinkPad P50 to SMBus
Input: elan_i2c - add ACPI ID for Lenovo IdeaPad 330-15ARR
Input: elan_i2c - add support for ELAN0621 touchpad
Input: hyper-v - fix wakeup from suspend-to-idle
Input: atkbd - clean up indentation issue
Input: st1232 - convert to SPDX identifiers
Input: migor_ts - convert to SPDX identifiers
Input: dt-bindings - fix a typo in file input-reset.txt
Input: cros_ec_keyb - fix button/switch capability reports
Input: elan_i2c - add ELAN0620 to the ACPI table
Input: matrix_keypad - check for errors from of_get_named_gpio()
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I noticed that the Android v3.0.8 kernel on droid4 is using different
keypad values from the mainline kernel and does not have issues with
keys occasionally being stuck until pressed again. Turns out there was
an earlier patch posted to fix this as "Input: omap-keypad: errata i689:
Correct debounce time", but it was never reposted to fix use macros
for timing calculations.
This updated version is using macros, and also fixes the use of the
input clock rate to use 32768KiHz instead of 32000KiHz. And we want to
use the known good Android kernel values of 3 and 6 instead of 2 and 6
in the earlier patch.
Reported-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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Since we continue to find tons of new variants [0,1,2,3,4,5,6] that
need the PDP quirk, let's just quirk all devices from PDP.
[0]: https://github.com/paroj/xpad/pull/104
[1]: https://github.com/paroj/xpad/pull/105
[2]: https://github.com/paroj/xpad/pull/108
[3]: https://github.com/paroj/xpad/pull/109
[4]: https://github.com/paroj/xpad/pull/112
[5]: https://github.com/paroj/xpad/pull/115
[6]: https://github.com/paroj/xpad/pull/116
Fixes: e5c9c6a885fa ("Input: xpad - add support for PDP Xbox One controllers")
Cc: stable@vger.kernel.org
Signed-off-by: Cameron Gutman <aicommander@gmail.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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SMBus works fine for the touchpad with id SYN3221, used in the HP 15-ay000
series,
This device has been reported in these messages in the "linux-input"
mailing list:
* https://marc.info/?l=linux-input&m=152016683003369&w=2
* https://www.spinics.net/lists/linux-input/msg52525.html
Reported-by: Nitesh Debnath <niteshkd1999@gmail.com>
Reported-by: Teika Kazura <teika@gmx.com>
Signed-off-by: Teika Kazura <teika@gmx.com>
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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Noticed the other day the trackpoint felt different on my P50, then
realized it was because rmi4 wasn't loading for this machine
automatically. Suspend/resume, hibernate, and everything else seem to
work perfectly fine on here.
Signed-off-by: Lyude Paul <lyude@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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Add ELAN061E to the ACPI table to support Elan touchpad found in Lenovo
IdeaPad 330-15ARR.
Signed-off-by: Noah Westervelt <nwestervelt@outlook.com>
Cc: stable@vger.kernel.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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Added the ability to detect the ELAN0621 touchpad found in some Lenovo
laptops.
Signed-off-by: Adam Wong <adam@adamwong.me>
Cc: stable@vger.kernel.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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It makes little sense but still possible to put Hyper-V guests into
suspend-to-idle state. To wake them up two wakeup sources were registered
in the past: hyperv-keyboard and hid-hyperv. However, since
commit eed4d47efe95 ("ACPI / sleep: Ignore spurious SCI wakeups from
suspend-to-idle") pm_wakeup_event() from these devices is ignored. Switch
to pm_wakeup_hard_event() API as these devices are actually the only
possible way to wakeup Hyper-V guests.
Fixes: eed4d47efe95 (ACPI / sleep: Ignore spurious SCI wakeups from suspend-to-idle)
Reviewed-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: K. Y. Srinivasan <kys@microsoft.com>
Acked-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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Trivial fix to clean up indentation issues, add missing tab
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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This patch updates license to use SPDX-License-Identifier
instead of verbose license text.
As original license mentioned, it is GPL-2.0 in SPDX.
Then, MODULE_LICENSE() should be "GPL v2" instead of "GPL".
See ${LINUX}/include/linux/module.h
"GPL" [GNU Public License v2 or later]
"GPL v2" [GNU Public License v2]
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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This patch updates license to use SPDX-License-Identifier
instead of verbose license text.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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The cros_ec_keyb_bs array lists buttons and switches together, expecting
that its users will match the appropriate type and bit fields. But
cros_ec_keyb_register_bs() only checks the 'bit' field, which causes
misreported input capabilities in some cases. For example, tablets
(e.g., Scarlet -- a.k.a. Acer Chromebook Tab 10) were reporting a SW_LID
capability, because EC_MKBP_POWER_BUTTON and EC_MKBP_LID_OPEN happen to
share the same bit.
(This has comedic effect on a tablet, in which a power-management daemon
then thinks this "lid" is closed, and so puts the system to sleep as
soon as it boots!)
To fix this, check both the 'ev_type' and 'bit' fields before reporting
the capability.
Tested with a lid (Kevin / Samsung Chromebook Plus) and without a lid
(Scarlet / Acer Chromebook Tab 10).
This error got introduced when porting the feature from the downstream
Chromium OS kernel to be upstreamed.
Fixes: cdd7950e7aa4 ("input: cros_ec_keyb: Add non-matrix buttons and switches")
Cc: <stable@vger.kernel.org>
Signed-off-by: Brian Norris <briannorris@chromium.org>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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Add ELAN0620 to the ACPI table to support the elan touchpad in
the Lenovo IdeaPad 130-15IKB.
Signed-off-by: Patrick Gaskin <patrick@pgaskin.net>
Cc: stable@vger.kernel.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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"of_get_named_gpio()" returns a negative error value if it fails
and drivers should check for this. This missing check was now
added to the matrix_keypad driver.
In my case "of_get_named_gpio()" returned -EPROBE_DEFER because
the referenced GPIOs belong to an I/O expander, which was not yet
probed at the point in time when the matrix_keypad driver was
loading. Because the driver did not check for errors from the
"of_get_named_gpio()" routine, it was assuming that "-EPROBE_DEFER"
is actually a GPIO number and continued as usual, which led to further
errors like this later on:
WARNING: CPU: 3 PID: 167 at drivers/gpio/gpiolib.c:114
gpio_to_desc+0xc8/0xd0
invalid GPIO -517
Note that the "GPIO number" -517 in the error message above is
actually "-EPROBE_DEFER".
As part of the patch a misleading error message "no platform data defined"
was also removed. This does not lead to information loss because the other
error paths in matrix_keypad_parse_dt() already print an error.
Signed-off-by: Christian Hoff <christian_hoff@gmx.net>
Suggested-by: Sebastian Reichel <sre@kernel.org>
Reviewed-by: Sebastian Reichel <sre@kernel.org>
Cc: stable@vger.kernel.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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Pull XArray conversion from Matthew Wilcox:
"The XArray provides an improved interface to the radix tree data
structure, providing locking as part of the API, specifying GFP flags
at allocation time, eliminating preloading, less re-walking the tree,
more efficient iterations and not exposing RCU-protected pointers to
its users.
This patch set
1. Introduces the XArray implementation
2. Converts the pagecache to use it
3. Converts memremap to use it
The page cache is the most complex and important user of the radix
tree, so converting it was most important. Converting the memremap
code removes the only other user of the multiorder code, which allows
us to remove the radix tree code that supported it.
I have 40+ followup patches to convert many other users of the radix
tree over to the XArray, but I'd like to get this part in first. The
other conversions haven't been in linux-next and aren't suitable for
applying yet, but you can see them in the xarray-conv branch if you're
interested"
* 'xarray' of git://git.infradead.org/users/willy/linux-dax: (90 commits)
radix tree: Remove multiorder support
radix tree test: Convert multiorder tests to XArray
radix tree tests: Convert item_delete_rcu to XArray
radix tree tests: Convert item_kill_tree to XArray
radix tree tests: Move item_insert_order
radix tree test suite: Remove multiorder benchmarking
radix tree test suite: Remove __item_insert
memremap: Convert to XArray
xarray: Add range store functionality
xarray: Move multiorder_check to in-kernel tests
xarray: Move multiorder_shrink to kernel tests
xarray: Move multiorder account test in-kernel
radix tree test suite: Convert iteration test to XArray
radix tree test suite: Convert tag_tagged_items to XArray
radix tree: Remove radix_tree_clear_tags
radix tree: Remove radix_tree_maybe_preload_order
radix tree: Remove split/join code
radix tree: Remove radix_tree_update_node_t
page cache: Finish XArray conversion
dax: Convert page fault handlers to XArray
...
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Redirect some older email addresses that are in the git logs.
Signed-off-by: Matthew Wilcox <willy@infradead.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
Pull input updates from Dmitry Torokhov:
"Just random driver fixups, nothing exiting"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
Input: synaptics - avoid using uninitialized variable when probing
Input: xen-kbdfront - mark expected switch fall-through
Input: atmel_mxt_ts - mark expected switch fall-through
Input: cyapa - mark expected switch fall-throughs
Input: wm97xx-ts - fix exit path
Input: of_touchscreen - add support for touchscreen-min-x|y
Input: Fix DIR-685 touchkeys MAINTAINERS entry
Input: elants_i2c - use DMA safe i2c when possible
Input: silead - try firmware reload after unsuccessful resume
Input: st1232 - set INPUT_PROP_DIRECT property
Input: xilinx_ps2 - convert to using %pOFn instead of device_node.name
Input: atmel_mxt_ts - fix multiple <linux/property.h> includes
Input: sun4i-lradc - convert to using %pOFn instead of device_node.name
Input: pwm-vibrator - correct pwms in DT binding example
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Prepare input updates for 4.20 merge window.
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git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd
Pull MFD updates from Lee Jones:
"New Drivers
- Add support for USART SPI to AT91*
New Functionality
- Add support for Audio CODECs to motorola-cpcap
Fix-ups
- DT documentation fix-ups; atmel-usart
- Staticise functions/structs; spi-at91-usart, arizona-core
- Constify; ti-lmu
- Fix memory leaks; menelaus
- Change device 'wake-up' status; ti_am335x_tscadc, max8997
- Power Management (suspend/resume) semantic changes; ti_am335x_adc, cros_ec, max8997
- SPDX churn; sec-core (+ headers), max* (+ headers), intel* (+ headers),
- Trivial (whitespace, email addresses, alphabetisise); Kconfig, adp5520, intel_soc_pmic_*
- Build as module; sec-irq
- Use new %pOFn printk format for device_node.name; max77620
- Remove unused code; madera
- Use generic MACROs; intel_msic, intel_soc_pmic_crc
- Move to GPIOD; ti-lmu
- Use managed resources; ti-lmu
Bug Fixes
- Add missing headers; at91-usart
- Prevent device from entering low-power mode; arizona-core
- Poll for BOOT_DONE to avoid still-booting NACK; madera-core
- Prevent ADC read from shutting down device; mc13xxx-core"
* tag 'mfd-next-4.20' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd: (45 commits)
mfd: cros_ec: Avoid unneeded internal declaration warning
mfd: ti-lmu: Use of_device_get_match_data() helper
mfd: ti-lmu: Use managed resource for everything
mfd: ti-lmu: Switch to GPIOD
mfd: ti-lmu: constify mfd_cell tables
mfd: max8997: Disable interrupt handling for suspend/resume cycle
mfd: max8997: Enale irq-wakeup unconditionally
mfd: arizona: Make array mclk_name static, shrinks object size
MAINTAINERS: Add myself as designated reviewer of Intel MFD PMIC
mfd: Convert Intel PMIC drivers to use SPDX identifier 1;5201;0c Reduce size of duplicated comments by switching to use SPDX identifier.
mfd: Sort headers alphabetically for Intel PMIC drivers
mfd: intel_soc_pmic_bxtwc: Chain power button IRQs as well
mfd: intel_soc_pmic_crc: Use REGMAP_IRQ_REG() macro
mfd: intel_soc_pmic_crc: Use DEFINE_RES_IRQ_NAMED() macro
mfd: intel_msic: Use DEFINE_RES_IRQ() macro
mfd: motorola-cpcap: Add audio-codec support
mfd: mc13xxx-core: Fix PMIC shutdown when reading ADC values
mfd: madera: Remove unused forward reference
mfd: max77620: Convert to using %pOFn instead of device_node.name
mfd: madera: Don't use regmap_read_poll_timeout to poll for BOOT_DONE
...
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On AM335x, ti_am335x_tsc can wake up the system from suspend, mark the
IRQ as wakeup capable, so that device irq is not disabled during system
suspend.
Signed-off-by: Vignesh R <vigneshr@ti.com>
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
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Instead of TSCADC MFD device, mark TSC as wakeup source and change all
wakeup related PM calls to operate on TSC device.
Signed-off-by: Vignesh R <vigneshr@ti.com>
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull tty ioctl updates from Al Viro:
"This is the compat_ioctl work related to tty ioctls.
Quite a bit of dead code taken out, all tty-related stuff gone from
fs/compat_ioctl.c. A bunch of compat bugs fixed - some still remain,
but all more or less generic tty-related ioctls should be covered
(remaining issues are in things like driver-private ioctls in a pcmcia
serial card driver not getting properly handled in 32bit processes on
64bit host, etc)"
* 'work.tty-ioctl' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (53 commits)
kill TIOCSERGSTRUCT
change semantics of ldisc ->compat_ioctl()
kill TIOCSER[SG]WILD
synclink_gt(): fix compat_ioctl()
pty: fix compat ioctls
compat_ioctl - kill keyboard ioctl handling
gigaset: add ->compat_ioctl()
vt_compat_ioctl(): clean up, use compat_ptr() properly
gigaset: don't try to printk userland buffer contents
dgnc: don't bother with (empty) stub for TCXONC
dgnc: leave TIOC[GS]SOFTCAR to ldisc
remove fallback to drivers for TIOCGICOUNT
dgnc: break-related ioctls won't reach ->ioctl()
kill the rest of tty COMPAT_IOCTL() entries
dgnc: TIOCM... won't reach ->ioctl()
isdn_tty: TCSBRK{,P} won't reach ->ioctl()
kill capinc_tty_ioctl()
take compat TIOC[SG]SERIAL treatment into tty_compat_ioctl()
synclink: reduce pointless checks in ->ioctl()
complete ->[sg]et_serial() switchover
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First of all, make it return int. Returning long when native method
had never allowed that is ridiculous and inconvenient.
More importantly, change the caller; if ldisc ->compat_ioctl() is NULL
or returns -ENOIOCTLCMD, tty_compat_ioctl() will try to feed cmd and
compat_ptr(arg) to ldisc's native ->ioctl().
That simplifies ->compat_ioctl() instances quite a bit - they only
need to deal with ioctls that are neither generic tty ones (those
would get shunted off to tty_ioctl()) nor simple compat pointer ones.
Note that something like TCFLSH won't reach ->compat_ioctl(),
even if ldisc ->ioctl() does handle it - it will be recognized
earlier and passed to tty_ioctl() (and ultimately - ldisc ->ioctl()).
For many ldiscs it means that NULL ->compat_ioctl() does the
right thing. Those where it won't serve (see e.g. n_r3964.c) are
also easily dealt with - we need to handle the numeric-argument
ioctls (calling the native instance) and, if such would exist,
the ioctls that need layout conversion, etc.
All in-tree ldiscs dealt with.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap
Pull regmap updates from Mark Brown:
"A small update with a couple of new APIs that are useful for some
small sets of devices:
- Split up the single_rw flagging to map read and write separately as
some devices support bulk operations for only read or only write.
- Add a write version of the noinc API.
- Clean up the code for LOG_DEVICE a bit"
* tag 'regmap-v5.0' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap:
regmap: use less #ifdef for LOG_DEVICE
regmap: Add regmap_noinc_write API
regmap: split up regmap_config.use_single_rw
regmap: fix comment for regmap.use_single_write
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'regmap/topic/single-rw' into regmap-next
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Split regmap_config.use_single_rw into use_single_read and
use_single_write. This change enables drivers of devices which only
support bulk operations in one direction to use the regmap_bulk_*()
functions for both directions and have their bulk operation split into
single operations only when necessary.
Update all struct regmap_config instances where use_single_rw==true to
instead set both use_single_read and use_single_write. No attempt was
made to evaluate whether it is possible to set only one of
use_single_read or use_single_write.
Signed-off-by: David Frey <dpfrey@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
Dmitry writes:
"Input updates for 4.19-rc8
Just an addition to elan touchpad driver ACPI table."
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
Input: elan_i2c - add ACPI ID for Lenovo IdeaPad 330-15IGM
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Add ELAN061C to the ACPI table to support Elan touchpad found in Lenovo
IdeaPad 330-15IGM.
Signed-off-by: Mikhail Nikiforov <jackxviichaos@gmail.com>
Cc: stable@vger.kernel.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
Dmitry writes:
"Input updates for v4.19-rc7
- we added a few scheduling points into various input interfaces to
ensure that large writes will not cause RCU stalls
- fixed configuring PS/2 keyboards as wakeup devices on newer
platforms
- added a new Xbox gamepad ID."
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
Input: uinput - add a schedule point in uinput_inject_events()
Input: evdev - add a schedule point in evdev_write()
Input: mousedev - add a schedule point in mousedev_write()
Input: i8042 - enable keyboard wakeups by default when s2idle is used
Input: xpad - add support for Xbox1 PDP Camo series gamepad
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Large writes to uinput interface may cause rcu stalls. Let's add
cond_resched() to the loop to avoid this.
Reviewed-by: Paul E. McKenney <paulmck@linux.ibm.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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Large writes to evdev interface may cause rcu stalls. Let's add
cond_resched() to the loop to avoid this.
Reviewed-by: Paul E. McKenney <paulmck@linux.ibm.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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syzbot was able to trigger rcu stalls by calling write()
with large number of bytes.
Add a cond_resched() in the loop to avoid this.
Link: https://lkml.org/lkml/2018/8/23/1106
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: syzbot+9436b02171ac0894d33e@syzkaller.appspotmail.com
Reviewed-by: Paul E. McKenney <paulmck@linux.ibm.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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