On Mon, 18 Aug 2025, Doug Anderson wrote:
> > Introduce a new HID quirk to indicate that this device has to be enabled
> > after the panel's backlight is enabled, and update the driver data for
> > the elan devices to enable this quirk. This cannot be a I2C HID quirk
> > because the kernel needs to acknowledge this before powering up the
> > device and read the VID/PID. When this quirk is enabled, register
> > .panel_enabled()/.panel_disabling() instead for the panel follower.
> >
> > Also rename the *panel_prepare* functions into *panel_follower* because
> > they could be called in other situations now.
> >
> > Fixes: bd3cba00dcc63 ("HID: i2c-hid: elan: Add support for Elan eKTH6915
> > i2c-hid touchscreens")
> > Fixes: d06651bebf99e ("HID: i2c-hid: elan: Add elan-ekth6a12nay timing")
> >
> > Reviewed-by: Douglas Anderson <[email protected]>
> > Signed-off-by: Pin-yen Lin <[email protected]>
> >
> > ---
> >
> > Changes in v3:
> > - Collect review tag
> > - Add fixes tags
> >
> > Changes in v2:
> > - Rename *panel_prepare* functions to *panel_follower*
> > - Replace after_panel_enabled flag with enabled/disabling callbacks
> >
> > drivers/hid/i2c-hid/i2c-hid-core.c | 46 ++++++++++++++++-----------
> > drivers/hid/i2c-hid/i2c-hid-of-elan.c | 11 ++++++-
> > include/linux/hid.h | 2 ++
> > 3 files changed, 40 insertions(+), 19 deletions(-)
>
> Re-iterating my response from v2 [1] so it's still seen even if people
> only look at the latest version. :-) If HID folks don't mind us
> landing this through drm-misc, feel free to Ack this patch.
Acked-by: Jiri Kosina <[email protected]>
Thanks!
--
Jiri Kosina
SUSE Labs
