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The i2c-hid driver would quietly fail to probe the i2c-hid sensor-hub
with an ACPI device-id of SMO91D0 every other boot.
Specifically, the i2c_smbus_read_byte() "Make sure there is something at
this address" check would fail every other boot.
It seems that the BIOS does not properly reset/power-cycle the device
leaving it in a confused state where it refuses to respond to i2c-xfers.
On boots where probing the device failed, the driver-core puts the device
in D3 after the probe-failure, which causes the probe to succeed the next
boot.
Putting the device in D3 from the shutdown-handler fixes the sensors not
working every other boot.
This has been tested on both a Lenovo Miix 2-10 and a Dell Venue 8 Pro 5830
both of which use an i2c-hid sensor-hub with an ACPI id of SMO91D0.
Note that it is safe to call acpi_device_set_power() with a NULL pointer
as first argument, so on none ACPI enumerated devices this change is a
no-op.
Cc: Kai-Heng Feng <kai.heng.feng@canonical.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Many laptops can be woken up from Suspend-to-Idle by touchpad. This is
also the default behavior on other OSes.
However, if touchpad and touchscreen contact to each other when lid is
closed, wakeup events can be triggered inadventertly.
So let's disable the wakeup by default, but enable the wakeup capability
so users can enable it at their own discretion.
Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Fix following warnings caused by mismatch bewteen function parameters
and comments.
drivers/hid/i2c-hid/i2c-hid-core.c:331: warning: Function parameter or member 'data_len' not described in 'i2c_hid_set_or_send_report'
drivers/hid/i2c-hid/i2c-hid-core.c:331: warning: Excess function parameter 'len' description in 'i2c_hid_set_or_send_report'
Signed-off-by: Xiaofei Tan <tanxiaofei@huawei.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Adding printouts to the i2c_hid_probe() function shows that it takes
quite some time. It used to take about 70 ms, but after commit
eef4016243e9 ("HID: i2c-hid: Always sleep 60ms after I2C_HID_PWR_ON
commands") it takes about 190 ms. This is not tons of time but it's
not trivial. Because we haven't yet specified that we'd prefer
asynchronous probe for this driver then, if the driver is builtin to
the kernel, we'll wait for this driver to finish before we start
probes for more drivers. Let's set the flag to enable asynchronous
for this driver so that other drivers aren't blocked from probing
until we finish.
Since this driver can be configured as a module and modules are
always asynchronously probed this is quite a safe change and will
benefit anyone who has a reason to build this driver into the kernel
instead of using it as a module.
[jkosina@suse.cz: drop spurious whitespace addition]
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Before this commit i2c_hid_parse() consists of the following steps:
1. Send power on cmd
2. usleep_range(1000, 5000)
3. Send reset cmd
4. Wait for reset to complete (device interrupt, or msleep(100))
5. Send power on cmd
6. Try to read HID descriptor
Notice how there is an usleep_range(1000, 5000) after the first power-on
command, but not after the second power-on command.
Testing has shown that at least on the BMAX Y13 laptop's i2c-hid touchpad,
not having a delay after the second power-on command causes the HID
descriptor to read as all zeros.
In case we hit this on other devices too, the descriptor being all zeros
can be recognized by the following message being logged many, many times:
hid-generic 0018:0911:5288.0002: unknown main item tag 0x0
At the same time as the BMAX Y13's touchpad issue was debugged,
Kai-Heng was working on debugging some issues with Goodix i2c-hid
touchpads. It turns out that these need a delay after a PWR_ON command
too, otherwise they stop working after a suspend/resume cycle.
According to Goodix a delay of minimal 60ms is needed.
Having multiple cases where we need a delay after sending the power-on
command, seems to indicate that we should always sleep after the power-on
command.
This commit fixes the mentioned issues by moving the existing 1ms sleep to
the i2c_hid_set_power() function and changing it to a 60ms sleep.
Cc: stable@vger.kernel.org
BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=208247
Reported-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Reported-and-tested-by: Andrea Borgia <andrea@borgia.bo.it>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
On the Dell XPS 9570, the Synaptics SYNA2393 touchpad generates spurious
interrupts after resuming from suspend until it receives some input or
is reset. Add it to the quirk I2C_HID_QUIRK_RESET_ON_RESUME so that it
is reset when resuming from suspend.
More information about the bug can be found in this mailing list
discussion: https://www.spinics.net/lists/linux-input/msg59530.html
Signed-off-by: Daniel Playfair Cal <daniel.playfair.cal@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Commit 52cf93e63ee6 ("HID: i2c-hid: Don't reset device upon system
resume") fixes many touchpads and touchscreens, however ALPS touchpads
start to trigger IRQ storm after system resume.
Since it's total silence from ALPS, let's bring the old behavior back
to ALPS touchpads.
Fixes: 52cf93e63ee6 ("HID: i2c-hid: Don't reset device upon system resume")
Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
On some ThinkPad L390 some raydium 3118 touchscreen devices
doesn't response any data after reset, but some does.
Add this ID to no irq quirk,
then don't wait for any response alike on these touchscreens.
All kinds of raydium 3118 devices work fine.
BugLink: https://bugs.launchpad.net/bugs/1849721
Signed-off-by: Aaron Ma <aaron.ma@canonical.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This was introduced in commit 00b790ea545b ("HID: i2c-hid: Add a small
delay after sleep command for Raydium touchpanel") which has been
effectively reverted by commit 67b18dfb8cfc ("HID: i2c-hid: Remove
runtime power management").
Signed-off-by: You-Sheng Yang <vicamo.yang@canonical.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Before commit 67b18dfb8cfc ("HID: i2c-hid: Remove runtime power
management"), any i2c-hid touchscreens would typically be runtime-suspended
between the driver loading and Xorg or a Wayland compositor opening it,
causing it to be resumed again. This means that before this change,
we would call i2c_hid_set_power(OFF), i2c_hid_set_power(ON) before the
graphical session would start listening to the touchscreen.
It turns out that at least some SIS touchscreens, such as the one found
on the Asus T100HA, need a power-on command after reset, otherwise they
will not send any events.
Fixes: 67b18dfb8cfc ("HID: i2c-hid: Remove runtime power management")
Cc: Kai-Heng Feng <kai.heng.feng@canonical.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Runtime power management in i2c-hid brings lots of issues, such as:
- When transitioning from display manager to desktop session, i2c-hid
was closed and opened, so the device was set to SLEEP and ON in a short
period. Vendors confirmed that their devices can't handle fast ON/SLEEP
command because Windows doesn't have this behavior.
- When rebooting, i2c-hid was closed, and the driver core put the device
back to full power before shutdown. This behavior also triggers a quick
SLEEP and ON commands that some devices can't handle, renders an
unusable touchpad after reboot.
- Most importantly, my power meter reports little to none energy saving
when i2c-hid is runtime suspended.
So let's remove runtime power management since there is no actual
benefit.
Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
This 'SET_PWR_WAKEUP_DEV' quirk only works for weida's devices with pid
0xC300 & 0xC301. Some weida's devices with other pids also need this quirk
now. Use 'HID_ANY_ID' instead of 0xC300 to make all of weida's devices can be
fixed on the power on issue. This modification should be safe since devices
without power on issue will send the power on command only once.
Signed-off-by: HungNien Chen <hn.chen@weidahitech.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This reverts commit 74e7c6c877f620d65a8269692d089bbd066f626c.
It finally turns out the touchpad is an engineering sample and it is
not the Synaptics touchpad. Let us revert this patch otherwise it will
affect the real Synaptics touchpad.
Signed-off-by: Hui Wang <hui.wang@canonical.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
We have a new Dell laptop which has the synaptics I2C touchpad
(06cb:7e7e) on it. After booting up the Linux, the touchpad doesn't
work, there is no interrupt when touching the touchpad, after
disable the runtime PM, everything works well.
I also tried the quirk of I2C_HID_QUIRK_DELAY_AFTER_SLEEP, it is
better after applied this quirk, there are interrupts but data it
reports is invalid.
Signed-off-by: Hui Wang <hui.wang@canonical.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
While using Elan touchpads, the message floods:
[ 136.138487] i2c_hid i2c-DELL08D6:00: i2c_hid_get_input: incomplete report (14/65535)
Though the message flood is annoying, the device it self works without
any issue. I suspect that the device in question takes too much time to
pull the IRQ back to high after I2C host has done reading its data.
Since the host receives all useful data, let's ignore the input report
when there's no data.
Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
A Goodix touchpad doesn't work. Touching the touchpad can trigger IRQ
but there's no input event from HID subsystem.
Turns out it reports some invalid data:
[ 22.136630] i2c_hid i2c-DELL091F:00: input: 0b 00 01 00 00 00 00 00 00 00 00
After some trial and error, it's another device that doesn't work well
with ON/SLEEP commands. Disable runtime PM to fix the issue.
Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
LG touchscreen (1fd2:8001) stops working after reboot:
[ 4.859153] i2c_hid i2c-SAPS2101:00: i2c_hid_get_input: incomplete report (64/66)
[ 4.936070] i2c_hid i2c-SAPS2101:00: i2c_hid_get_input: incomplete report (64/66)
[ 9.948224] i2c_hid i2c-SAPS2101:00: failed to reset device.
The device in question stops working after receives SLEEP, ON, SLEEP
commands in a short period. The scenario is like this:
- Once the desktop session closes, it also closed the hid device, so the
device gets runtime suspended and receives a SLEEP command.
- Before calling shutdown callback, it gets runtime resumed and received
an ON command.
- In the shutdown callback, it receives another SLEEP command.
I failed to find a reliable interval between ON/SLEEP commands that can
make it work, so let's simply disable runtime PM for the device.
Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Raydium touchpanel (2386:4B33) sometimes does not work in desktop session
although it works in display manager.
During user logging, the display manager exits, close the HID device,
then the device gets runtime suspended and powered off. The desktop
session begins shortly after, opens the HID device, then the device gets
runtime resumed and powered on.
If the trasition from display manager to desktop sesesion is fast, the
touchpanel cannot switch from powered off to powered on in short
timeframe. So add a small delay to workaround the issue.
Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
A particular touchpad (SIPODEV SP1064) refuses to supply the HID
descriptors. This patch provides the framework for overriding these
descriptors based on DMI data. It also includes the descriptors for
said touchpad, which were extracted by listening to the traffic of the
windows filter driver, as well as the DMI data for the laptops known
to use this device.
Relevant Bug: https://bugzilla.redhat.com/show_bug.cgi?id=1526312
Cc: Hans de Goede <hdegoede@redhat.com>
Reported-and-tested-by: ahormann@gmx.net
Reported-and-tested-by: Bruno Jesus <bruno.fl.jesus@gmail.com>
Reported-and-tested-by: Dietrich <enaut.w@googlemail.com>
Reported-and-tested-by: kloxdami@yahoo.com
Signed-off-by: Julian Sax <jsbc@gmx.de>
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
