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Input: sur40 - fix MAX_CONTACTS value based on PixelSense specification

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The Samsung SUR40 with Microsoft PixelSense is offically specified to
support 52 simultaneuous touch contacts, not 64. The value of 64 was an
unverified guess as noted by the FIXME comment. Update MAX_CONTACTS to
match the documented hardware specification and remove the FIXME.

Signed-off-by: Oliver <oliverburns.kernel@gmail.com>
Link: https://patch.msgid.link/20260614230847.4938-1-oliverburns.kernel@gmail.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This commit is contained in:
Oliver
2026-06-26 22:25:02 -07:00
committed by Dmitry Torokhov
parent 8fc62e1d74
commit c8f1749009
1 changed files with 2 additions and 2 deletions
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drivers/input/touchscreen/sur40.c
+2 -2
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@@ -128,8 +128,8 @@ struct sur40_image_header {
/* polling interval (ms) */
#define POLL_INTERVAL 1
/* maximum number of contacts FIXME: this is a guess? */
#define MAX_CONTACTS 64
/* maximum number of contacts */
#define MAX_CONTACTS 52
/* control commands */
#define SUR40_GET_VERSION 0xb0 /* 12 bytes string */