Pull input updates from Dmitry Torokhov:
"Mostly existing driver fixes plus a new driver for game controllers
directly connected to Nintendo 64, and an enhancement for keyboards
driven by Chrome OS EC to communicate layout of the top row to
userspace"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: (47 commits)
Input: st1232 - fix NORMAL vs. IDLE state handling
Input: aiptek - convert sysfs sprintf/snprintf family to sysfs_emit
Input: alps - fix spelling of "positive"
ARM: dts: cros-ec-keyboard: Use keymap macros
dt-bindings: input: Fix the keymap for LOCK key
dt-bindings: input: Create macros for cros-ec keymap
Input: cros-ec-keyb - expose function row physical map to userspace
dt-bindings: input: cros-ec-keyb: Add a new property describing top row
Input: applespi - fix occasional crc errors under load.
Input: applespi - don't wait for responses to commands indefinitely.
Input: st1232 - add IDLE state as ready condition
Input: zinitix - fix return type of zinitix_init_touch()
Input: i8042 - add ASUS Zenbook Flip to noselftest list
Input: add missing dependencies on CONFIG_HAS_IOMEM
Input: joydev - prevent potential read overflow in ioctl
Input: elo - fix an error code in elo_connect()
Input: xpad - add support for PowerA Enhanced Wired Controller for Xbox Series X|S
Input: sur40 - fix an error code in sur40_probe()
Input: elants_i2c - detect enum overflow
Input: zinitix - remove unneeded semicolon
...
NORMAL (0x0) and IDLE (0x4) are really two different states. Hence you
cannot check for both using a bitmask, as that checks for IDLE only,
breaking operation for devices that are in NORMAL state.
Fix the wait function to report either state as ready.
Fixes: 6524d8eac2 ("Input: st1232 - add IDLE state as ready condition")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Michael Tretter <m.tretter@pengutronix.de>
Link: https://lore.kernel.org/r/20210223090201.1430542-1-geert+renesas@glider.be
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>
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Merge tag 'v5.11' into next
Merge with mainline to get latest APIs and device tree bindings.
- Generalise byte swapping assembly
- Update debug addresses for STI
- Validate start of physical memory with DTB
- Do not clear SCTLR.nTLSMD in decompressor
- amba/locomo/sa1111 devices remove method return type is void
- address markers for KASAN in page table dump
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Merge tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm
Pull ARM updates from Russell King:
- Generalise byte swapping assembly
- Update debug addresses for STI
- Validate start of physical memory with DTB
- Do not clear SCTLR.nTLSMD in decompressor
- amba/locomo/sa1111 devices remove method return type is void
- address markers for KASAN in page table dump
* tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm:
ARM: 9065/1: OABI compat: fix build when EPOLL is not enabled
ARM: 9055/1: mailbox: arm_mhuv2: make remove callback return void
amba: Make use of bus_type functions
amba: Make the remove callback return void
vfio: platform: simplify device removal
amba: reorder functions
amba: Fix resource leak for drivers without .remove
ARM: 9054/1: arch/arm/mm/mmu.c: Remove duplicate header
ARM: 9053/1: arm/mm/ptdump:Add address markers for KASAN regions
ARM: 9051/1: vdso: remove unneded extra-y addition
ARM: 9050/1: Kconfig: Select ARCH_HAVE_NMI_SAFE_CMPXCHG where possible
ARM: 9049/1: locomo: make locomo bus's remove callback return void
ARM: 9048/1: sa1111: make sa1111 bus's remove callback return void
ARM: 9047/1: smp: remove unused variable
ARM: 9046/1: decompressor: Do not clear SCTLR.nTLSMD for ARMv7+ cores
ARM: 9045/1: uncompress: Validate start of physical memory against passed DTB
ARM: 9042/1: debug: no uncompress debugging while semihosting
ARM: 9041/1: sti LL_UART: add STiH418 SBC UART0 support
ARM: 9040/1: use DEBUG_UART_PHYS and DEBUG_UART_VIRT for sti LL_UART
ARM: 9039/1: assembler: generalize byte swapping macro into rev_l
A relatively calm release at this time, and no massive code changes
are found in the stats, while a wide range of code refactoring and
cleanup have been done.
Note that this update includes the tree-wide trivial changes for
dropping the return value from ISA remove callbacks, too.
Below lists up some highlight:
* ALSA Core:
- Support for the software jack injection via debugfs
- Fixes for sync_stop PCM operations
* HD-audio and USB-audio:
- A few usual HD-audio device quirks
- Updates for Tegra HD-audio
- More quirks for Pioneer and other USB-audio devices
- Stricter state checks at USB-audio disconnection
* ASoC:
- Continued code refactoring, cleanup and fixes in ASoC core API
- A KUnit testsuite for the topology code
- Lots of ASoC Intel driver Realtek codec updates, quirk additions and
fixes
- Support for Ingenic JZ4760(B), Intel AlderLake-P, DT configured
nVidia cards, Qualcomm lpass-rx-macro and lpass-tx-macro
- Removal of obsolete SIRF prima/atlas, Txx9 and ZTE zx drivers
* Others:
- Drop return value from ISA driver remove callback
- Cleanup with DIV_ROUND_UP() macro
- FireWire updates, HDSP output loopback support
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Merge tag 'sound-5.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound updates from Takashi Iwai:
"A relatively calm release at this time, and no massive code changes
are found in the stats, while a wide range of code refactoring and
cleanup have been done.
Note that this update includes the tree-wide trivial changes for
dropping the return value from ISA remove callbacks, too.
Below lists up some highlight:
ALSA Core:
- Support for the software jack injection via debugfs
- Fixes for sync_stop PCM operations
HD-audio and USB-audio:
- A few usual HD-audio device quirks
- Updates for Tegra HD-audio
- More quirks for Pioneer and other USB-audio devices
- Stricter state checks at USB-audio disconnection
ASoC:
- Continued code refactoring, cleanup and fixes in ASoC core API
- A KUnit testsuite for the topology code
- Lots of ASoC Intel driver Realtek codec updates, quirk additions
and fixes
- Support for Ingenic JZ4760(B), Intel AlderLake-P, DT configured
nVidia cards, Qualcomm lpass-rx-macro and lpass-tx-macro
- Removal of obsolete SIRF prima/atlas, Txx9 and ZTE zx drivers
Others:
- Drop return value from ISA driver remove callback
- Cleanup with DIV_ROUND_UP() macro
- FireWire updates, HDSP output loopback support"
* tag 'sound-5.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (322 commits)
ALSA: hda: intel-dsp-config: add Alder Lake support
ASoC: soc-pcm: fix hw param limits calculation for multi-DAI
ASoC: Intel: bytcr_rt5640: Add quirk for the Acer One S1002 tablet
ASoC: Intel: bytcr_rt5651: Add quirk for the Jumper EZpad 7 tablet
ASoC: Intel: bytcr_rt5640: Add quirk for the Voyo Winpad A15 tablet
ASoC: Intel: bytcr_rt5640: Add quirk for the Estar Beauty HD MID 7316R tablet
ASoC: soc-pcm: fix hwparams min/max init for dpcm
ALSA: hda/realtek: Quirk for HP Spectre x360 14 amp setup
ALSA: usb-audio: Add implicit fb quirk for BOSS GP-10
ALSA: hda: Add another CometLake-H PCI ID
ASoC: soc-pcm: add soc_pcm_hw_update_format()
ASoC: soc-pcm: add soc_pcm_hw_update_chan()
ASoC: soc-pcm: add soc_pcm_hw_update_rate()
ASoC: wm_adsp: Remove unused control callback structure
ASoC: SOF: relax ABI checks and avoid unnecessary warnings
ASoC: codecs: lpass-tx-macro: add dapm widgets and route
ASoC: codecs: lpass-tx-macro: add support for lpass tx macro
ASoC: qcom: dt-bindings: add bindings for lpass tx macro codec
ASoC: codecs: lpass-rx-macro: add iir widgets
ASoC: codecs: lpass-rx-macro: add dapm widgets and route
...
Here is the big set of tty/serial driver changes for 5.12-rc1.
Nothing huge, just lots of good cleanups and additions:
- Your n_tty line discipline cleanups
- vt core cleanups and reworks to make the code more "modern"
- stm32 driver additions
- tty led support added to the tty core and led layer
- minor serial driver fixups and additions
All of these have been in linux-next for a while with no reported
issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'tty-5.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Pull tty/serial driver updates from Greg KH:
"Here is the big set of tty/serial driver changes for 5.12-rc1.
Nothing huge, just lots of good cleanups and additions:
- n_tty line discipline cleanups
- vt core cleanups and reworks to make the code more "modern"
- stm32 driver additions
- tty led support added to the tty core and led layer
- minor serial driver fixups and additions
All of these have been in linux-next for a while with no reported
issues"
* tag 'tty-5.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (54 commits)
serial: core: Remove BUG_ON(in_interrupt()) check
vt_ioctl: Remove in_interrupt() check
dt-bindings: serial: imx: Switch to my personal address
vt: keyboard, use new API for keyboard_tasklet
serial: stm32: improve platform_get_irq condition handling in init_port
serial: ifx6x60: Remove driver for deprecated platform
tty: fix up iterate_tty_read() EOVERFLOW handling
tty: fix up hung_up_tty_read() conversion
tty: fix up hung_up_tty_write() conversion
tty: teach the n_tty ICANON case about the new "cookie continuations" too
tty: teach n_tty line discipline about the new "cookie continuations"
tty: clean up legacy leftovers from n_tty line discipline
tty: implement read_iter
tty: convert tty_ldisc_ops 'read()' function to take a kernel pointer
serial: remove sirf prima/atlas driver
serial: mxs-auart: Remove <asm/cacheflush.h>
serial: mxs-auart: Remove serial_mxs_probe_dt()
serial: fsl_lpuart: Use of_device_get_match_data()
dt-bindings: serial: renesas,hscif: Add r8a779a0 support
tty: serial: Drop unused efm32 serial driver
...
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>
The st1232 can switch from NORMAL to IDLE state after the configured
idle time (by default 8 s). If the st1232 is not reset during probe, it
might already be ready but in IDLE state. Since it does not enter NORMAL
state in this case, probe fails.
Fix the wait function to report the IDLE state as ready, too.
Fixes: f605be6a57 ("Input: st1232 - wait until device is ready before reading resolution")
Signed-off-by: Michael Tretter <m.tretter@pengutronix.de>
Link: https://lore.kernel.org/r/20210219110556.1858969-1-m.tretter@pengutronix.de
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>
Another quiet release in terms of features, though several of the
drivers got quite a bit of work and there were a lot of general changes
resulting from Morimoto-san's ongoing cleanup work.
- As ever, lots of hard work by Morimoto-san cleaning up the code and
making it more consistent.
- Many improvements in the Intel drivers including a wide range of
quirks and bug fixes.
- A KUnit testsuite for the topology code.
- Support for Ingenic JZ4760(B), Intel AlderLake-P, DT configured
nVidia cards, Qualcomm lpass-rx-macro and lpass-tx-macro
- Removal of obsolete SIRF prima/atlas, Txx9 and ZTE zx drivers.
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Merge tag 'asoc-v5.12' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus
ASoC: Updates for v5.12
Another quiet release in terms of features, though several of the
drivers got quite a bit of work and there were a lot of general changes
resulting from Morimoto-san's ongoing cleanup work.
- As ever, lots of hard work by Morimoto-san cleaning up the code and
making it more consistent.
- Many improvements in the Intel drivers including a wide range of
quirks and bug fixes.
- A KUnit testsuite for the topology code.
- Support for Ingenic JZ4760(B), Intel AlderLake-P, DT configured
nVidia cards, Qualcomm lpass-rx-macro and lpass-tx-macro
- Removal of obsolete SIRF prima/atlas, Txx9 and ZTE zx drivers.
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>
All amba drivers return 0 in their remove callback. Together with the
driver core ignoring the return value anyhow, it doesn't make sense to
return a value here.
Change the remove prototype to return void, which makes it explicit that
returning an error value doesn't work as expected. This simplifies changing
the core remove callback to return void, too.
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Acked-by: Krzysztof Kozlowski <krzk@kernel.org> # for drivers/memory
Acked-by: Mark Brown <broonie@kernel.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Suzuki K Poulose <suzuki.poulose@arm.com> # for hwtracing/coresight
Acked-By: Vinod Koul <vkoul@kernel.org> # for dmaengine
Acked-by: Guenter Roeck <linux@roeck-us.net> # for watchdog
Acked-by: Wolfram Sang <wsa@kernel.org> # for I2C
Acked-by: Takashi Iwai <tiwai@suse.de> # for sound
Acked-by: Vladimir Zapolskiy <vz@mleia.com> # for memory/pl172
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lore.kernel.org/r/20210126165835.687514-5-u.kleine-koenig@pengutronix.de
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
The driver core ignores the return value of struct bus_type::remove
because there is only little that can be done. To simplify the quest to
make this function return void, let struct locomo_driver::remove return
void, too. All users already unconditionally return 0, this commit makes
it obvious that returning an error code is a bad idea and ensures future
users behave accordingly.
Link: https://lore.kernel.org/r/20201126110140.2021758-1-u.kleine-koenig@pengutronix.de
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Acked-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
The driver core ignores the return value of struct device_driver::remove
because there is only little that can be done. To simplify the quest to
make this function return void, let struct sa1111_driver::remove return
void, too. All users already unconditionally return 0, this commit makes
it obvious that returning an error code is a bad idea and ensures future
users behave accordingly.
Link: https://lore.kernel.org/r/20201126114724.2028511-1-u.kleine-koenig@pengutronix.de
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
If execution jumps to the err_kfree label, error_bl is evaluated
before it is initialized. Fix this by initializing it to zero.
Fixes: 2539da6677 ("Input: iqs5xx - preserve bootloader errors")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Jeff LaBundy <jeff@labundy.com>
Link: https://lore.kernel.org/r/1611592500-32209-1-git-send-email-jeff@labundy.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
The driver core ignores the return value of the remove callback, so
don't give isa drivers the chance to provide a value.
Adapt all isa_drivers with a remove callbacks accordingly; they all
return 0 unconditionally anyhow.
Acked-by: Marc Kleine-Budde <mkl@pengutronix.de> # for drivers/net/can/sja1000/tscan1.c
Acked-by: William Breathitt Gray <vilhelm.gray@gmail.com>
Acked-by: Wolfram Sang <wsa@kernel.org> # for drivers/i2c/
Reviewed-by: Takashi Iway <tiwai@suse.de> # for sound/
Reviewed-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> # for drivers/media/
Signed-off-by: Uwe Kleine-König <uwe@kleine-koenig.org>
Link: https://lore.kernel.org/r/20210122092449.426097-4-uwe@kleine-koenig.org
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This adds support for the four built-in controller
ports on the Nintendo 64 console. The N64 controller
includes an analog stick, a d-pad, and several buttons.
No module support as the target has only 8mb ram.
Signed-off-by: Lauri Kasanen <cand@gmx.com>
Link: https://lore.kernel.org/r/20210115133408.0acd70163b582b77ad0a029b@gmx.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Avoid placing the device in suspend mode (from which it cannot
generate interrupts) if it is defined as a wake-up source. The
device is still permitted to enter a low-power sensing mode on
its own.
Signed-off-by: Jeff LaBundy <jeff@labundy.com>
Link: https://lore.kernel.org/r/1611002626-5889-11-git-send-email-jeff@labundy.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
After the device is initialized, it runs ATI (calibration) during
which it cannot readily respond to I2C communication. To keep the
open and close callbacks from writing to the device too soon, the
driver waits 100 ms before returning from probe.
The vendor reports that ATI may actually take up to 250 ms to run
(including margin), so increase the delay accordingly. Update the
comments to clarify the reason for the delay as well.
Signed-off-by: Jeff LaBundy <jeff@labundy.com>
Link: https://lore.kernel.org/r/1611002626-5889-9-git-send-email-jeff@labundy.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Instead of relying on firmware to enable important register fields
and performing read-modify-write operations to additionally enable
the fields the driver cares about, it's much simpler just to write
all of the pertinent fields explicitly.
This avoids an unnecessary register read operation at start-up and
makes way for the iqs5xx_read_byte() helper to be dropped.
Signed-off-by: Jeff LaBundy <jeff@labundy.com>
Link: https://lore.kernel.org/r/1611002626-5889-8-git-send-email-jeff@labundy.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
The present implementation manipulates axis swap and inversion fields
in the device to more or less duplicate what touchscreen_report_pos()
does. The resulting logic is convoluted and difficult to follow.
Instead report the maximum X and Y coordinates in earnest as they are
read from the device, then let touchscreen_parse_properties() fix the
axes up as necessary. Finally, use touchscreen_report_pos() to report
the transformed coordinates.
Last but not least, the maximum X and Y coordinates are not functions
of the number of rows/columns that comprise the touch surface. Either
coordinate is simply limited to 1 below what is reported for absolute
X or Y coordinates when no fingers are present (0xFFFF).
Signed-off-by: Jeff LaBundy <jeff@labundy.com>
Link: https://lore.kernel.org/r/1611002626-5889-7-git-send-email-jeff@labundy.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
The device may be inadvertently reset during runtime in the event
of ESD strike, etc. To protect against this case, acknowledge the
SHOW_RESET interrupt and re-initialize the device.
To facilitate this change, expand the range of registers that are
read in the interrupt handler to include the system status fields.
Also, update the unrelated (but nearby) SUSPEND register field to
use the BIT() macro. The remaining register fields are cleaned up
in another patch.
Signed-off-by: Jeff LaBundy <jeff@labundy.com>
Link: https://lore.kernel.org/r/1611002626-5889-6-git-send-email-jeff@labundy.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
The bootloader NAK's all I2C communication after the first 64-byte
bulk write if the bus frequency is equal to 400 kHz. This prevents
the platform from pushing updated firmware to the device.
The vendor's USB bootloader programming dongle appears to insert a
delay between the "open" command and the first 64-byte bulk write.
Adding a similar delay to the driver seems to eliminate the issue.
Furthermore, the dongle does not access the bootloader immediately
after powering up the device. Follow suit by adding a delay before
the "open" command to avoid wasted retries at 400 kHz.
Signed-off-by: Jeff LaBundy <jeff@labundy.com>
Link: https://lore.kernel.org/r/1611002626-5889-4-git-send-email-jeff@labundy.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
After user space writes the fw_file attribute to push new firmware
to the device, the driver calls iqs5xx_dev_init() to re-initialize
the device with the updated firmware or recover the device in case
the update failed.
In the case of the latter, however, iqs5xx_fw_file_write() returns
zero (success) so long as iqs5xx_dev_init() does not fail, and any
error encountered during the update process is lost. Solve this by
saving the error before calling iqs5xx_dev_init().
Signed-off-by: Jeff LaBundy <jeff@labundy.com>
Link: https://lore.kernel.org/r/1611002626-5889-3-git-send-email-jeff@labundy.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Copyrights are generally followed by the name of a person or a
company (i.e. the copyright holder) but that was not done here.
Fix this by squashing the 'copyright' and 'author' lines.
Also, trim some leading whitespace ahead of the parameters for
the fw_file_store() function and re-align them for readability.
Signed-off-by: Jeff LaBundy <jeff@labundy.com>
Link: https://lore.kernel.org/r/1611002626-5889-2-git-send-email-jeff@labundy.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
There is a fork of this driver on GitHub [0] that has been updated
with new device IDs.
Merge those into the mainline driver, so the out-of-tree fork is not
needed for users of those devices anymore.
[0] https://github.com/paroj/xpad
Signed-off-by: Benjamin Valentin <benpicco@googlemail.com>
Link: https://lore.kernel.org/r/20210121142523.1b6b050f@rechenknecht2k11
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Add ELAN KTF3624 touchscreen support to the elants_i2c driver.
The eKTF3624 TS is found on a series of ASUS Transformer tablet devices,
Nexus 7 tablet and etc. The firmware interface of eKTF3624 is nearly
identical to eKTH3500, which is already supported by the driver.
The minor differences of the firmware interface are now handled by
the driver. The eKTF3624 support was tested on ASUS Transformer TF700T,
TF300T and Nexus 7 tablets.
Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Link: https://lore.kernel.org/r/20210124195414.27333-1-digetx@gmail.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Fixes both the "splice/sendfile to a tty" and "splice/sendfile from a
tty" regression from 5.10.
* 'tty-splice' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux:
tty: teach the n_tty ICANON case about the new "cookie continuations" too
tty: teach n_tty line discipline about the new "cookie continuations"
tty: clean up legacy leftovers from n_tty line discipline
tty: implement read_iter
tty: convert tty_ldisc_ops 'read()' function to take a kernel pointer
tty: implement write_iter
Convert multiple full duplex transfers in to a single transfer to reduce
CPU load.
Current driver version support following filtering modes:
- ads7846_no_filter() - not filtered
- ads7846_debounce_filter() - driver specific debounce filter
- pdata->filter - platform specific debounce filter (do any platform
provides such filter?)
Without filter this HW is not really usable, since the physic of
resistive touchscreen can provide some bounce effects. With driver internal
filter, we have constant amount of retries + debounce retries if some anomaly
was detected.
High amount of tiny SPI transfers is the primer reason of high CPU load
and interrupt frequency.
This patch create one SPI transfer with all fields and not optional retires. If
bounce anomaly was detected, we will make more transfer if needed.
Without this patch, we will get about 10% CPU load on iMX6S on pen-down event.
For example by holding stylus on the screen.
With this patch, depending in the amount of retries, the CPU load will
be 1% with "ti,debounce-rep = <3>".
One buffer transfer allows us to use PIO FIFO or DMA engine, depending
on the platform.
Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Link: https://lore.kernel.org/r/20201110085041.16303-3-o.rempel@pengutronix.de
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
The tty line discipline .read() function was passed the final user
pointer destination as an argument, which doesn't match the 'write()'
function, and makes it very inconvenient to do a splice method for
ttys.
This is a conversion to use a kernel buffer instead.
NOTE! It does this by passing the tty line discipline ->read() function
an additional "cookie" to fill in, and an offset into the cookie data.
The line discipline can fill in the cookie data with its own private
information, and then the reader will repeat the read until either the
cookie is cleared or it runs out of data.
The only real user of this is N_HDLC, which can use this to handle big
packets, even if the kernel buffer is smaller than the whole packet.
Cc: Christoph Hellwig <hch@lst.de>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Fixes the following W=1 kernel build warning(s):
drivers/input/touchscreen/stmpe-ts.c:82: warning: Function parameter or member 'prop' not described in 'stmpe_touch'
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20210114152323.2382283-6-lee.jones@linaro.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Fixes the following W=1 kernel build warning(s):
drivers/input/touchscreen/surface3_spi.c: In function ‘surface3_spi_process_touch’:
drivers/input/touchscreen/surface3_spi.c:97:6: warning: variable ‘timestamp’ set but not used [-Wunused-but-set-variable]
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Link: https://lore.kernel.org/r/20210114152323.2382283-5-lee.jones@linaro.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Fixes the following W=1 kernel build warning(s):
drivers/input/touchscreen/usbtouchscreen.c: In function ‘nexio_read_data’:
drivers/input/touchscreen/usbtouchscreen.c:1052:50: warning: variable ‘ret’ set but not used [-Wunused-but-set-variable]
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20210114152323.2382283-4-lee.jones@linaro.org
[dtor: log error code as well]
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Dmitry requested to keep these around for the purposes of documentation.
Fixes the following W=1 kernel build warning(s):
drivers/input/touchscreen/melfas_mip4.c: In function ‘mip4_report_touch’:
drivers/input/touchscreen/melfas_mip4.c:474:5: warning: variable ‘size’ set but not used [-Wunused-but-set-variable]
drivers/input/touchscreen/melfas_mip4.c:472:5: warning: variable ‘pressure_stage’ set but not used [-Wunused-but-set-variable]
drivers/input/touchscreen/melfas_mip4.c:469:7: warning: variable ‘palm’ set but not used [-Wunused-but-set-variable]
drivers/input/touchscreen/melfas_mip4.c:468:7: warning: variable ‘hover’ set but not used [-Wunused-but-set-variable]
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20210114152323.2382283-3-lee.jones@linaro.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Fixes the following W=1 kernel build warning(s):
drivers/input/mouse/synaptics.c: In function ‘synaptics_process_packet’:
drivers/input/mouse/synaptics.c:1110:6: warning: suggest braces around empty body in an ‘if’ statement [-Wempty-body]
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20210114152323.2382283-2-lee.jones@linaro.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Linus Torvalds
Geert Uytterhoeven
Dmitry Torokhov
Jiapeng Chong
Bhaskar Chowdhury
Philip Chen
Russell King
Ronald Tschalär
Michael Tretter
Marcos Paulo de Souza
Dan Carpenter
Takashi Iwai
Olivier Crête
Josh Poimboeuf
Yang Li
Uwe Kleine-König
Jeff LaBundy
Uwe Kleine-König
Lauri Kasanen
Benjamin Valentin
Michał Mirosław
Greg Kroah-Hartman
Oleksij Rempel
Lee Jones
Souptick Joarder