[PATCH v8 0/5] Input: support for STM FTS5

[Dmitry Torokhov]

Hi David,

On Fri, Sep 25, 2026 at 11:22:18PM +0200, David Heidelberg wrote:
> Used on various phones. Minimal viable driver.
>
> Includes device-tree enabling touchscreen on Pixel 3.
> Also, tested on Xiaomi Mi 8 (device-tree is not yet inside the mainline).

I applied patches 1 through 4 (leaving patch 5/5 for the Qualcomm SoC
tree) with a few small adjustments folded in:

 - In patch 1/5, added a missing trailing newline to the reset timeout
   error message and fixed a typo in the comment in stmfts_power_on().
 - In patch 3/5, wrapped "const: st,stmfts5" under "contains:" in the
   allOf condition so the check keeps working if a fallback compatible
   is added later.
 - In patch 4/5:
   - moved ABS_MT_TOOL_TYPE setup from stmfts_setup_input() to
     stmfts5_setup_input() since FTS4 does not report tool types;
   - dropped the undocumented "stylus-enabled" property check so stylus
     contacts unconditionally report MT_TOOL_PEN;
   - checked X and Y resolutions independently before applying the
     10 units/mm fallback;
   - added a check for !sdata->ops in stmfts_probe();
   - fixed the GPIO name in the "mode-switch" error message and a couple
     of minor comment/log formatting nits.

I will also send out a few separate follow-up patches shortly: one
teaching touchscreen_parse_properties() to parse touchscreen-x-mm and
touchscreen-y-mm directly so drivers do not have to open-code resolution
handling, plus a few fixes in stmfts (not aborting FIFO parsing early on
non-touch events, validating the 4-bit slot ID against
STMFTS_MAX_FINGERS, and switching coordinate reporting to
touchscreen_report_pos() so axis inversion and swapping properties are
honored).

Thanks.

-- 
Dmitry