On Sat, Sep 26, 2026 at 10:26:47PM +0200, David Heidelberg via B4 Relay wrote: > From: David Heidelberg <[email protected]> > > System suspend powers the controller off and resume powers it back on, > but the resume path enables the interrupt before s6sy761_power_on() > checks the boot. The firmware raises its boot-complete event on the > interrupt line, the threaded handler consumes it, s6sy761_power_on() > then reads an empty event and resume fails with -ENODEV, skipping the > touch function setup: > > s6sy761 2-0048: PM: dpm_run_callback(): s6sy761_resume [s6sy761] returns -19 > > Power the chip on first and only then unmask the interrupt. Once resume > completes the boot handshake the chip comes back with sensing off, as > at probe where input_open() turns it on, so the touchscreen stays dead > after resume. Send SENSE_ON again when the input device is open. > > Tested on a Pixel 3 XL over several s2idle cycles: resume succeeds and > the touch function and sense status match the pre-suspend state. > > Assisted-by: LLM > Cc: [email protected] > Fixes: 0145a7141e59 ("Input: add support for the Samsung S6SY761 touchscreen") > Signed-off-by: David Heidelberg <[email protected]>
Applied, thank you. -- Dmitry
