When booting the xenbus driver will wait for PV devices to have
connected to their backends before continuing. The timeout is different
between essential and non-essential devices.
Non-essential devices are identified by their nodenames directly in the
xenbus driver, which requires to update this list in case a new device
type being non-essential is added (this was missed for several types
in the past).
In order to avoid this problem, add a "not_essential" flag to struct
xenbus_driver which can be set to "true" by the respective frontend.
Set this flag for the frontends currently regarded to be not essential
(vkbs and vfb) and use it for testing in the xenbus driver.
Signed-off-by: Juergen Gross <jgross@suse.com>
Link: https://lore.kernel.org/r/20211022064800.14978-2-jgross@suse.com
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Pull input updates from Dmitry Torokhov:
"Just one new driver (Cypress StreetFighter touchkey), and no input
core changes this time.
Plus various fixes and enhancements to existing drivers"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: (54 commits)
Input: iforce - fix control-message timeout
Input: wacom_i2c - use macros for the bit masks
Input: ili210x - reduce sample period to 15ms
Input: ili210x - improve polled sample spacing
Input: ili210x - special case ili251x sample read out
Input: elantench - fix misreporting trackpoint coordinates
Input: synaptics-rmi4 - Fix device hierarchy
Input: i8042 - Add quirk for Fujitsu Lifebook T725
Input: cap11xx - add support for cap1206
Input: remove unused header <linux/input/cy8ctmg110_pdata.h>
Input: ili210x - add ili251x firmware update support
Input: ili210x - export ili251x version details via sysfs
Input: ili210x - use resolution from ili251x firmware
Input: pm8941-pwrkey - respect reboot_mode for warm reset
reboot: export symbol 'reboot_mode'
Input: max77693-haptic - drop unneeded MODULE_ALIAS
Input: cpcap-pwrbutton - do not set input parent explicitly
Input: max8925_onkey - don't mark comment as kernel-doc
Input: ads7846 - do not attempt IRQ workaround when deferring probe
Input: ads7846 - use input_set_capability()
...
Modern devices may redraw display at 60 Hz, make sure we have one input
sample per one frame. Reduce sample period to 15ms, so we would get up
to 66.6 samples per second, although realistically with all the jitter
and extra scheduling wiggle room, we would end up just above 60 samples
per second. This should be a good compromise between sampling too often
and sampling too seldom.
Signed-off-by: Marek Vasut <marex@denx.de>
Link: https://lore.kernel.org/r/20211108114145.84118-1-marex@denx.de
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Currently the ili210x driver implements a threaded interrupt handler which
starts upon edge on the interrupt line, and then polls the touch controller
for samples. Every time a sample is obtained from the controller, the thread
function checks whether further polling is required, and if so, waits fixed
amount of time before polling for next sample.
The delay between consecutive samples can thus vary greatly, because the
I2C transfer required to retrieve the sample from the controller takes
different amount of time on different platforms. Furthermore, different
models of the touch controllers supported by this driver require different
delays during retrieval of samples too.
Instead of waiting fixed amount of time before polling for next sample,
determine how much time passed since the beginning of sampling cycle and
then wait only the remaining amount of time within the sampling cycle.
This makes the driver deliver samples with equal spacing between them.
Signed-off-by: Marek Vasut <marex@denx.de>
Link: https://lore.kernel.org/r/20211108005216.480525-1-marex@denx.de
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
The ili251x touch controller needs 5ms delay between sending I2C device
address and register address, and, writing or reading register data.
According to downstream ili251x example code, this 5ms delay is not
required when reading touch samples out of the controller. Implement
such a special case.
Signed-off-by: Marek Vasut <marex@denx.de>
Link: https://lore.kernel.org/r/20211108005259.480545-1-marex@denx.de
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Pull HID updates from Jiri Kosina:
- support for Nintendo Switch Pro Controllers and Joy-Cons (Daniel J.
Ogorchock)
- support for new revision of the NitroKey U2F device firmware (Andrej
Shadura)
- LED handling improvements for Sony Playstation5 controllers (Roderick
Colenbrander)
- support for Apple 2021 Magic Keyboard (Alex Henrie)
- other assorted code cleanups and new device ID additions
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid: (41 commits)
HID: nintendo: fix -Werror build
HID: playstation: require multicolor LED functionality
HID: u2fzero: properly handle timeouts in usb_submit_urb
HID: u2fzero: clarify error check and length calculations
HID: u2fzero: Support NitroKey U2F revision of the device
HID: wacom: Make use of the helper function devm_add_action_or_reset()
HID: wacom: Shrink critical section in `wacom_add_shared_data`
HID: nintendo: prevent needless queueing of the rumble worker
HID: nintendo: ratelimit subcommands and rumble
HID: nintendo: improve rumble performance and stability
HID: nintendo: add IMU support
HID: nintendo: add support for reading user calibration
HID: nintendo: add support for charging grip
HID: nintendo: set controller uniq to MAC
HID: nintendo: reduce device removal subcommand errors
HID: nintendo: patch hw version for userspace HID mappings
HID: nintendo: send subcommands after receiving input report
HID: nintendo: improve subcommand reliability
HID: nintendo: add rumble support
HID: nintendo: add home led support
...
Pull tty / serial driver updates from Greg KH:
"Here is the big set of tty and serial driver updates for 5.16-rc1.
Nothing major in here at all, just lots of tiny serial and tty driver
updates for various reported things, and some good cleanups. These
include:
- more good tty api cleanups from Jiri
- stm32 serial driver updates
- softlockup fix for non-preempt systems under high serial load
- rpmsg serial driver update
- 8250 drivers updates and fixes
- n_gsm line discipline fixes and updates as people are finally
starting to use it.
All of these have been in linux-next for a while now with no reported
issues"
* tag 'tty-5.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (86 commits)
tty: Fix extra "not" in TTY_DRIVER_REAL_RAW description
serial: cpm_uart: Protect udbg definitions by CONFIG_SERIAL_CPM_CONSOLE
tty: rpmsg: Define tty name via constant string literal
tty: rpmsg: Add pr_fmt() to prefix messages
tty: rpmsg: Use dev_err_probe() in ->probe()
tty: rpmsg: Unify variable used to keep an error code
tty: rpmsg: Assign returned id to a local variable
serial: stm32: push DMA RX data before suspending
serial: stm32: terminate / restart DMA transfer at suspend / resume
serial: stm32: rework RX dma initialization and release
serial: 8250_pci: Remove empty stub pci_quatech_exit()
serial: 8250_pci: Replace custom pci_match_id() implementation
serial: xilinx_uartps: Fix race condition causing stuck TX
serial: sunzilog: Mark sunzilog_putchar() __maybe_unused
Revert "tty: hvc: pass DMA capable memory to put_chars()"
Revert "virtio-console: remove unnecessary kmemdup()"
serial: 8250_pci: Replace dev_*() by pci_*() macros
serial: 8250_pci: Get rid of redundant 'else' keyword
serial: 8250_pci: Refactor the loop in pci_ite887x_init()
tty: add rpmsg driver
...
Pull x86 platform driver updates from Hans de Goede:
"Highlights:
- AMD-PMC S0ix support fixes and improvements
- HP-WMI support for Omen laptops
- New nvidia-wmi-ec-backlight driver
- New Intel ISH ECLITE driver
- WMI core cleanups
- Support for various new Melanox platforms
- System76 Laptop support improvements
- Surface Laptop Studio support and initial Surface Pro 8 support
- Various other small fixes and hardware-id additions"
* tag 'platform-drivers-x86-v5.16-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86: (106 commits)
platform/x86: system76_acpi: Fix input device error handling
platform/x86: touchscreen_dmi: Add info for the Viglen Connect 10 tablet
platform/surface: aggregator_registry: Add initial support for Surface Pro 8
platform/x86: mlx-platform: Add support for new system SGN2410
platform/x86: mlx-platform: Add BIOS attributes for CoffeeLake COMEx based systems
platform/x86: mlx-platform: Extend FAN and LED configuration to support new MQM97xx systems
platform/x86: asus-wmi: rename platform_profile_* function symbols
platform/x86: hp-wmi: rename platform_profile_* function symbols
platform/x86: amd-pmc: Drop check for valid alarm time
platform/x86: amd-pmc: Downgrade dev_info message to dev_dbg
platform/x86: amd-pmc: fix compilation without CONFIG_RTC_SYSTOHC_DEVICE
platform/x86: system76_acpi: fix Kconfig dependencies
platform/x86: barco-p50-gpio: use KEY_VENDOR for button instead of KEY_RESTART
platform/x86: sony-laptop: replace snprintf in show functions with sysfs_emit
platform/x86: lg-laptop: replace snprintf in show functions with sysfs_emit
docs: ABI: fix documentation warning in sysfs-driver-mlxreg-io
platform/x86: wmi: change notification handler type
HID: surface-hid: Allow driver matching for target ID 1 devices
HID: surface-hid: Use correct event registry for managing HID events
platform/surface: aggregator_registry: Add support for Surface Laptop Studio
...
According to the datasheet "The CAP1206 is pin- and register-compatible
with the CAP1106, with the exception of the GAIN[1:0] bits and ALT_POL
bit"(57). So, this patch aims to disable them as they are no longer
used.
Signed-off-by: Jesse Taube <mr.bossman075@gmail.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This patch adds support for the controller's IMU. The accelerometer and
gyro data are both provided to userspace using a second input device.
The devices can be associated using their uniq value (set to the
controller's MAC address).
A large part of this patch's functionality was provided by Carl Mueller.
The IMU device is blacklisted from the joydev input handler.
Signed-off-by: Daniel J. Ogorchock <djogorchock@gmail.com>
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Pull input fixes from Dmitry Torokhov:
- a new product ID for the xpad joystick driver
- fixes to resistive-adc-touch and snvs_pwrkey drivers
- a change to touchscreen helpers to make clang happier
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
Input: touchscreen - avoid bitwise vs logical OR warning
Input: xpad - add support for another USB ID of Nacon GC-100
Input: resistive-adc-touch - fix division by zero error on z1 == 0
Input: snvs_pwrkey - add clk handling
The ili251x firmware can be updated, this is used when switching between
different modes of operation of the touch surface, e.g. glove operation.
This patch implements the firmware update mechanism triggered by a write
into an sysfs attribute.
The firmware itself is distributed as an intel hex file with non-standard
types. The first two lines are of type 0xad, which indicates the start of
DataFlash payload, that is always at address 0xf000 on the ili251x, so it
can be dropped, and 0xac which indicates the position of firmware info in
the Application payload, that is always at address 0x2020 on the ili251x
and we do not care. The rest of the firmware is data of type 0x00, and we
care about that. To convert the firmware hex file into something usable
by the kernel, remove the first two lines and then use ihex2fw:
$ tail -n +3 input.hex > temp.hex
$ ./tools/firmware/ihex2fw temp.hex firmware/ilitek/ili251x.bin
To trigger the firmware update, place firmware file ilitek/ili251x.bin
into /lib/firmware/, write into firmware_update sysfs attribute and wait
about 30-40 seconds. The firmware update is slow. Afterward, verify the
firmware_version and mode sysfs attributes to check whether the firmware
got updated and the controller switched back to application (AP) mode by
reading out 'mode' attribute in sysfs.
Note that the content of firmware_version, e.g. 0600.0005.abcd.aa04 can
be matched to the content of the firmware hex file. The first four bytes,
0x06 0x00 0x00 0x05 can be found at ^:102030 00 05000006, the next four
bytes 0xab 0xcd 0xaa 0x04 at ^:10F000 00 nnnnnnnn ABCDAA04.
Note that the protocol differs considerably between the ili2xxx devices,
this patch therefore implements this functionality only for ili251x that
I can test.
Signed-off-by: Marek Vasut <marex@denx.de>
Link: https://lore.kernel.org/r/20210831202506.181927-3-marex@denx.de
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
The ili251x firmware protocol permits readout of firmware version,
protocol version, mcu version and current mode (application, boot
loader, forced update). These information are useful when updating
the firmware on the il251x, e.g. to avoid updating the same firmware
into the device multiple times. The locking is now necessary to avoid
races between interrupt handler and the sysfs readouts.
Note that the protocol differs considerably between the ili2xxx devices,
this patch therefore implements this functionality only for ili251x that
I can test.
Signed-off-by: Marek Vasut <marex@denx.de>
Link: https://lore.kernel.org/r/20210831202506.181927-2-marex@denx.de
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
The ili251x firmware protocol permits readout of panel resolution,
implement this, but make it possible to override this value using
DT bindings. This way, older DTs which contain touchscreen-size-x
and touchscreen-size-y properties will behave just like before and
new DTs may avoid specifying these for ILI251x.
Note that the command format is different on other controllers, so
this functionality is isolated to ILI251x.
Signed-off-by: Marek Vasut <marex@denx.de>
Link: https://lore.kernel.org/r/20210831202506.181927-1-marex@denx.de
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
