The touchscreen can be a wake up source and it's being used in DTS:
arch/arm/boot/dts/exynos5250-spring.dt.yaml:
trackpad@4b: 'wakeup-source' does not match any of the regexes: 'pinctrl-[0-9]+'
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20210212163806.69996-1-krzk@kernel.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
The for loop is just a complicate way to express a division. Replace it
by the actual division which is both simpler to understand for a human
and more efficient for a CPU to calculate.
Signed-off-by: Uwe Kleine-König <uwe@kleine-koenig.org>
Link: https://lore.kernel.org/r/20210316212233.50765-1-uwe@kleine-koenig.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
According to datasheets, chips like mXT1386 have a WAKE line, it is used
to wake the chip up from deep sleep mode before communicating with it via
the I2C-compatible interface.
If the WAKE line is connected to a GPIO line, the line must be asserted
25 ms before the host attempts to communicate with the controller. If the
WAKE line is connected to the SCL pin, the controller will send a NACK on
the first attempt to address it, the host must then retry 25 ms later.
Implement the wake-up methods in the driver. Touchscreen now works
properly on devices like Acer A500 tablet, fixing problems like this:
atmel_mxt_ts 0-004c: __mxt_read_reg: i2c transfer failed (-121)
atmel_mxt_ts 0-004c: mxt_bootloader_read: i2c recv failed (-121)
atmel_mxt_ts 0-004c: Trying alternate bootloader address
atmel_mxt_ts 0-004c: mxt_bootloader_read: i2c recv failed (-121)
atmel_mxt_ts: probe of 0-004c failed with error -121
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Jiada Wang <jiada_wang@mentor.com>
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Link: https://lore.kernel.org/r/20210302102158.10533-3-digetx@gmail.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Some Atmel touchscreen controllers have a WAKE line that needs to be
asserted low in order to wake up controller from a deep sleep. Document
the wakeup methods and the new GPIO properties.
Reviewed-by: Rob Herring <robh@kernel.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Link: https://lore.kernel.org/r/20210302102158.10533-2-digetx@gmail.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
There is error from cppcheck tool.
"Shifting signed 32-bit value by 31 bits is undefined behaviour errors"
Signed-off-by: edison.jiang <jiangzhipeng@yulong.com>
Link: https://lore.kernel.org/r/20210316153150.1207-1-jzp0409@163.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
The driver data for the data interface has already been set by
usb_driver_claim_interface() so drop the subsequent redundant
assignment.
Signed-off-by: Johan Hovold <johan@kernel.org>
Link: https://lore.kernel.org/r/20210318155525.22496-1-johan@kernel.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Device property API allows to gather device resources from different sources,
such as ACPI. Convert the drivers to unleash the power of device property API.
Signed-off-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20210314210951.645783-2-andy.shevchenko@gmail.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This converts the driver to use GPIO descriptors.
Note that it now uses logical polarity and thus nagation has been dropped.
Signed-off-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20210314210951.645783-1-andy.shevchenko@gmail.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Newer controllers, such as Voxel, Delbin, Magple, Bobba and others, do not
need to be reset after issuing power-on command, and skipping reset saves
at least 100ms from resume time.
Note that if first attempt of re-initializing device fails we will not be
skipping reset on the subsequent ones.
Signed-off-by: Jingle Wu <jingle.wu@emc.com.tw>
Link: https://lore.kernel.org/r/20210226073537.4926-1-jingle.wu@emc.com.tw
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
If the device is stuck in bootloader (maybe due to blank or corrupted
application firmware) it won't answer a query for the firmware version.
Fall back to returning the bootloader version in that case.
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Link: https://lore.kernel.org/r/20210125182527.1225245-4-l.stach@pengutronix.de
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Factor out the vendor data i2c request handling to make it reusable
for other functions. Also don't cache the model and firmware version
string in the device private data as we never use the cached version,
but always read from the device.
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Link: https://lore.kernel.org/r/20210125182527.1225245-3-l.stach@pengutronix.de
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Split out the multitouch event handling into its own function to allow other
events to be handled in the IRQ handler without disturbing the MT handling.
Now that things are separated a bit more, stop treating vendor data requests
special by cehcking for a locked mutex, but just look at the event ID to
figure out if the message is a MT report or a vendor data query reply.
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Link: https://lore.kernel.org/r/20210125182527.1225245-2-l.stach@pengutronix.de
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
The common cros-ec keymap has been defined as macros. This patch uses
the macros to simply linux,keymap in cros-ec-keyboard.dtsi file.
This patch also creates an alias for keyboard-controller to make it
easier to override the keymap in board-specific dts later.
Signed-off-by: Philip Chen <philipchen@chromium.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Link: https://lore.kernel.org/r/20210115143555.v6.2.I9ec9c3c61eded22a5f7fbff838d23fc95ec7cfe0@changeid
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Decouple LOCK from F13 and directly map the LOCK key (KSI3/KSO9) to
KEY_SLEEP action key code.
Signed-off-by: Philip Chen <philipchen@chromium.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Acked-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20210115143555.v6.3.I96134907488f41f358d03f3c1b08194f9547e670@changeid
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
In Chrome OS, the keyboard matrix can be split to two groups:
The keymap for the top row keys can be customized based on OEM
preference, while the keymap for the other keys is generic/fixed
across boards.
This patch creates marcos for the keymaps of these two groups, making
it easier to reuse the generic portion of keymap when we override the
keymap in the board-specific dts for custom top row design.
Signed-off-by: Philip Chen <philipchen@chromium.org>
Acked-by: Rob Herring <robh@kernel.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Link: https://lore.kernel.org/r/20210115143555.v6.1.Iaa8a60cf2ed4b7ad5e2fbb4ad76a1c600ee36113@changeid
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
The top-row keys in a keyboard usually have dual functionalities.
E.g. A function key "F1" is also an action key "Browser back".
Therefore, when an application receives an action key code from
a top-row key press, the application needs to know how to correlate
the action key code with the function key code and do the conversion
whenever necessary.
Since the userpace already knows the key scanlines (row/column)
associated with a received key code. Essentially, the userspace only
needs a mapping between the key row/column and the matching physical
location in the top row.
So, enhance the cros-ec-keyb driver to create such a mapping
and expose it to userspace in the form of a function_row_physmap
attribute. The attribute would be a space separated ordered list of
row/column codes for the keys in the function row, in a left-to-right
order.
The attribute will only be present when the device has a custom design
for the top-row keys.
Signed-off-by: Philip Chen <philipchen@chromium.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Link: https://lore.kernel.org/r/20210115122412.v7.2.I6542d7d9d0b246e7079bb16b41e697b2ac4b4e39@changeid
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Add a new property `function-row-physmap` to the
device tree for the custom keyboard top row design.
The property describes the rows/columns of the top row keys
from left to right.
Signed-off-by: Philip Chen <philipchen@chromium.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20210115122412.v7.1.I025fb861cd5fa0ef5286b7dce514728e9df7ae74@changeid
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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Merge tag 'v5.11' into next
Merge with mainline to get latest APIs and device tree bindings.
For some reason, when the system is under heavy CPU load, the read
following the write sometimes occurs unusually quickly, resulting in
the read data not being quite ready and hence a bad packet getting read.
Adding another delay after reading the status message appears to fix
this.
Signed-off-by: Ronald Tschalär <ronald@innovation.ch>
Link: https://lore.kernel.org/r/20210217190718.11035-2-ronald@innovation.ch
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
The response to a command may never arrive or it may be corrupted (and
hence dropped) for some reason. While exceedingly rare, when it did
happen it blocked all further commands. One way to fix this was to
do a suspend/resume. However, recovering automatically seems like a
nicer option. Hence this puts a time limit (1 sec) on how long we're
willing to wait for a response, after which we assume it got lost.
Signed-off-by: Ronald Tschalär <ronald@innovation.ch>
Link: https://lore.kernel.org/r/20210217190718.11035-1-ronald@innovation.ch
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
zinitix_init_touch() returns error code or 0 for success and therefore
return type must be int, not bool.
Fixes: 26822652c8 ("Input: add zinitix touchscreen driver")
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Jiapeng Chong <jiapeng.chong@linux.alibaba.com>
Link: https://lore.kernel.org/r/YC8z2bXc3Oy8pABa@google.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
After commit 77b425399f ("Input: i8042 - use chassis info to skip
selftest on Asus laptops"), all modern Asus laptops have the i8042
selftest disabled. It has done by using chassys type "10" (laptop).
The Asus Zenbook Flip suffers from similar suspend/resume issues, but
it _sometimes_ work and sometimes it doesn't. Setting noselftest makes
it work reliably. In this case, we need to add chassis type "31"
(convertible) in order to avoid selftest in this device.
Reported-by: Ludvig Norgren Guldhag <ludvigng@gmail.com>
Signed-off-by: Marcos Paulo de Souza <mpdesouza@suse.com>
Link: https://lore.kernel.org/r/20210219164638.761-1-mpdesouza@suse.com
Cc: stable@vger.kernel.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
devm_ioremap_resource() is only guaranteed to be present if
CONFIG_HAS_IOMEM is set.
Reported-by: kernel test robot <lkp@intel.com>
Link: https://lore.kernel.org/r/YCyauGyqxut69JNz@google.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
The problem here is that "len" might be less than "joydev->nabs" so the
loops which verfy abspam[i] and keypam[] might read beyond the buffer.
Fixes: 999b874f4a ("Input: joydev - validate axis/button maps before clobbering current ones")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Link: https://lore.kernel.org/r/YCyzR8WvFRw4HWw6@mwanda
[dtor: additional check for len being even in joydev_handle_JSIOCSBTNMAP]
Cc: stable@vger.kernel.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
If elo_setup_10() fails then this should return an error code instead
of success.
Fixes: fae3006e4b ("Input: elo - add support for non-pressure-sensitive touchscreens")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Link: https://lore.kernel.org/r/YBKFd5CvDu+jVmfW@mwanda
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
If v4l2_ctrl_handler_setup() fails then probe() should return an error
code instead of returning success.
Fixes: cee1e3e2ef ("media: add video control handlers using V4L2 control framework")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Link: https://lore.kernel.org/r/YBKFkbATXa5fA3xj@mwanda
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
If an enum value were to get added without updating this switch
statement, the unreachable() annotation would trigger undefined
behavior, causing execution to fall through the end of the function,
into the next one.
Make the error handling more robust for an unexpected enum value, by
doing BUG() instead of unreachable().
Fixes the following objtool warning:
drivers/input/touchscreen/elants_i2c.o: warning: objtool: elants_i2c_initialize() falls through to next function elants_i2c_resume()
Reported-by: Randy Dunlap <rdunlap@infradead.org>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Reviewed-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Link: https://lore.kernel.org/r/59e2e82d1e40df11ab38874c03556a31c6b2f484.1612974132.git.jpoimboe@redhat.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Pull LED fix from Pavel Machek:
"One-liner fixing a build problem"
* 'for-rc8-5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/pavel/linux-leds:
leds: rt8515: add V4L2_FLASH_LED_CLASS dependency
- Fix CONFIG_TRIM_UNUSED_KSYMS build for ppc64
- Use pkg-config for scripts/sign-file.c CFLAGS
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Merge tag 'kbuild-fixes-v5.11-3' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
Pull Kbuild fixes from Masahiro Yamada:
- Fix CONFIG_TRIM_UNUSED_KSYMS build for ppc64
- Use pkg-config for scripts/sign-file.c CFLAGS
* tag 'kbuild-fixes-v5.11-3' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
scripts: set proper OpenSSL include dir also for sign-file
sparc: remove wrong comment from arch/sparc/include/asm/Kbuild
kbuild: fix CONFIG_TRIM_UNUSED_KSYMS build for ppc64
- A fix for the fix to disable CET instrumentation generation for kernel code.
We forgot 32-bit, which we seem to do very often nowadays.
- A Xen PV fix to irqdomain init ordering.
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Merge tag 'x86_urgent_for_v5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Borislav Petkov:
"I kinda knew while typing 'I hope this is the last batch of x86/urgent
updates' last week, Murphy was reading too and uttered 'Hold my
beer!'.
So here's more fixes... Thanks Murphy.
Anyway, three more x86/urgent fixes for 5.11 final. We should be
finally ready (famous last words). :-)
- An SGX use after free fix
- A fix for the fix to disable CET instrumentation generation for
kernel code. We forgot 32-bit, which we seem to do very often
nowadays
- A Xen PV fix to irqdomain init ordering"
* tag 'x86_urgent_for_v5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/pci: Create PCI/MSI irqdomain after x86_init.pci.arch_init()
x86/build: Disable CET instrumentation in the kernel for 32-bit too
x86/sgx: Maintain encl->refcount for each encl->mm_list entry
The leds-rt8515 driver can optionall use the v4l2 flash led class,
but it causes a link error when that class is in a loadable module
and the rt8515 driver itself is built-in:
ld.lld: error: undefined symbol: v4l2_flash_init
>>> referenced by leds-rt8515.c
>>> leds/flash/leds-rt8515.o:(rt8515_probe) in archive
drivers/built-in.a
Adding 'depends on V4L2_FLASH_LED_CLASS' in Kconfig would avoid that,
but it would make it impossible to use the driver without the
v4l2 support.
Add the same dependency that the other users of this class have
instead, which just prevents the broken configuration.
Fixes: e1c6edcbea ("leds: rt8515: Add Richtek RT8515 LED driver")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
These are NOT exported to userspace.
The headers listed in arch/sparc/include/uapi/asm/Kbuild are exported.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
out the correct rate to use. This fixes displays running 4k@60Hz and
some other resolutions that haven't been exercised and fully understood
until now.
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Merge tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux
Pull clk fix from Stephen Boyd:
"One small fix for the Allwinner clk driver so that display clks figure
out the correct rate to use.
This fixes displays running 4k@60Hz and some other resolutions that
haven't been exercised and fully understood until now"
* tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux:
clk: sunxi-ng: mp: fix parent rate change flag check
One fix for scsi_debug that fixes a memory leak on module removal.
Signed-off-by: James E.J. Bottomley <jejb@linux.ibm.com>
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Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI fix from James Bottomley:
"One fix for scsi_debug that fixes a memory leak on module removal"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: scsi_debug: Fix a memory leak
Pull cgroup fixes from Tejun Heo:
"Two cgroup fixes:
- fix a NULL deref when trying to poll PSI in the root cgroup
- fix confusing controller parsing corner case when mounting cgroup
v1 hierarchies
And doc / maintainer file updates"
* 'for-5.11-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup:
cgroup: update PSI file description in docs
cgroup: fix psi monitor for root cgroup
MAINTAINERS: Update my email address
MAINTAINERS: Remove stale URLs for cpuset
cgroup-v1: add disabled controller check in cgroup1_parse_param()
Merge fixes from Andrew Morton:
"6 patches.
Subsystems affected by this patch series: mm/pagemap, scripts,
MAINTAINERS, and h8300"
* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
h8300: fix PREEMPTION build, TI_PRE_COUNT undefined
MAINTAINERS: add Andrey Konovalov to KASAN reviewers
MAINTAINERS: update Andrey Konovalov's email address
MAINTAINERS: update KASAN file list
scripts/recordmcount.pl: support big endian for ARCH sh
m68k: make __pfn_to_phys() and __phys_to_pfn() available for !MMU
Pull i2c fix from Wolfram Sang:
"One more I2C driver bugfix"
* 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
i2c: stm32f7: fix configuration of the digital filter
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Merge tag 'for-5.11-rc7-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux
Pull btrfs fix from David Sterba:
"A regression fix caused by a refactoring in 5.11.
A corrupted superblock wouldn't be detected by checksum verification
due to wrongly placed initialization of the checksum length, thus
making memcmp always work"
* tag 'for-5.11-rc7-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
btrfs: initialize fs_info::csum_size earlier in open_ctree
Fix a build error for undefined 'TI_PRE_COUNT' by adding it to
asm-offsets.c.
h8300-linux-ld: arch/h8300/kernel/entry.o: in function `resume_kernel': (.text+0x29a): undefined reference to `TI_PRE_COUNT'
Link: https://lkml.kernel.org/r/20210212021650.22740-1-rdunlap@infradead.org
Fixes: df2078b8da ("h8300: Low level entry")
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Reported-by: kernel test robot <lkp@intel.com>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
The kernel test robot reported the following issue:
CC [M] drivers/soc/litex/litex_soc_ctrl.o
sh4-linux-objcopy: Unable to change endianness of input file(s)
sh4-linux-ld: cannot find drivers/soc/litex/.tmp_gl_litex_soc_ctrl.o: No such file or directory
sh4-linux-objcopy: 'drivers/soc/litex/.tmp_mx_litex_soc_ctrl.o': No such file
The problem is that the format of input file is elf32-shbig-linux, but
sh4-linux-objcopy wants to output a file which format is elf32-sh-linux:
$ sh4-linux-objdump -d drivers/soc/litex/litex_soc_ctrl.o | grep format
drivers/soc/litex/litex_soc_ctrl.o: file format elf32-shbig-linux
Link: https://lkml.kernel.org/r/20210210150435.2171567-1-rong.a.chen@intel.com
Link: https://lore.kernel.org/linux-mm/202101261118.GbbYSlHu-lkp@intel.com
Signed-off-by: Rong Chen <rong.a.chen@intel.com>
Reported-by: kernel test robot <lkp@intel.com>
Cc: Yoshinori Sato <ysato@users.osdn.me>
Cc: Rich Felker <dalias@libc.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
