Johan Hovold 6d458d0dcc HID: i2c-hid: elan: fix reset suspend current leakage ... commit 0eafc58f21 upstream. The Elan eKTH5015M touch controller found on the Lenovo ThinkPad X13s shares the VCC33 supply with other peripherals that may remain powered during suspend (e.g. when enabled as wakeup sources). The reset line is also wired so that it can be left deasserted when the supply is off. This is important as it avoids holding the controller in reset for extended periods of time when it remains powered, which can lead to increased power consumption, and also avoids leaking current through the X13s reset circuitry during suspend (and after driver unbind). Use the new 'no-reset-on-power-off' devicetree property to determine when reset needs to be asserted on power down. Notably this also avoids wasting power on machine variants without a touchscreen for which the driver would otherwise exit probe with reset asserted. Fixes: bd3cba00dc ("HID: i2c-hid: elan: Add support for Elan eKTH6915 i2c-hid touchscreens") Cc: <stable@vger.kernel.org> # 6.0 Cc: Douglas Anderson <dianders@chromium.org> Tested-by: Steev Klimaszewski <steev@kali.org> Signed-off-by: Johan Hovold <johan+linaro@kernel.org> Reviewed-by: Douglas Anderson <dianders@chromium.org> Link: https://lore.kernel.org/r/20240507144821.12275-5-johan+linaro@kernel.org Signed-off-by: Benjamin Tissoires <bentiss@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2024-06-16 13:47:40 +02:00
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i2c-hid-acpi.c	HID: i2c-hid: Add IDEA5002 to i2c_hid_acpi_blacklist[]	2023-12-20 17:01:51 +01:00
i2c-hid-core.c	HID: i2c-hid: remove I2C_HID_READ_PENDING flag to prevent lock-up	2024-05-02 16:32:44 +02:00
i2c-hid-dmi-quirks.c	HID: retain initial quirks set up when creating HID devices	2023-02-09 14:24:30 +01:00
i2c-hid-of-elan.c	HID: i2c-hid: elan: fix reset suspend current leakage	2024-06-16 13:47:40 +02:00
i2c-hid-of-goodix.c	Merge branch 'for-6.5/i2c-hid' into for-linus	2023-06-27 22:42:28 +02:00
i2c-hid-of.c	HID: i2c-hid-of: fix NULL-deref on failed power up	2024-02-23 09:24:55 +01:00
i2c-hid.h	HID: multitouch: Add quirks for flipped axes	2023-01-18 10:08:51 +01:00
Kconfig	HID: i2c-hid: add more DRM dependencies	2023-08-03 07:36:41 -07:00
Makefile	HID: i2c-hid: elan: Add support for Elan eKTH6915 i2c-hid touchscreens	2022-06-08 11:46:23 +02:00