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HID: topre: Fix n-key rollover on Realforce R3S TKL boards

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Newer model R3* Topre Realforce keyboards share an issue with their older
R2 cousins where a report descriptor fixup is needed in order for n-key
rollover to work correctly, otherwise only 6-key rollover is available.
This patch adds some new hardware IDs for the R3S 87-key keyboard and
makes amendments to the existing hid-topre driver in order to change the
correct byte in the new model.

Signed-off-by: Daniel Brackenbury <daniel.brackenbury@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.com>
This commit is contained in:
Daniel Brackenbury 2025-01-28 20:08:49 -05:00 • committed by Jiri Kosina
parent 18c966b628
commit 9271af9d84
3 changed files with 10 additions and 1 deletions
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3
drivers/hid/Kconfig
View file

@ -1169,7 +1169,8 @@ config HID_TOPRE
tristate "Topre REALFORCE keyboards"
depends on HID
help
Say Y for N-key rollover support on Topre REALFORCE R2 108/87 key keyboards.
Say Y for N-key rollover support on Topre REALFORCE R2 108/87 key and
Topre REALFORCE R3S 87 key keyboards.
config HID_THINGM
tristate "ThingM blink(1) USB RGB LED"

1
drivers/hid/hid-ids.h
View file

@ -1302,6 +1302,7 @@
#define USB_VENDOR_ID_TOPRE 0x0853
#define USB_DEVICE_ID_TOPRE_REALFORCE_R2_108 0x0148
#define USB_DEVICE_ID_TOPRE_REALFORCE_R2_87 0x0146
#define USB_DEVICE_ID_TOPRE_REALFORCE_R3S_87 0x0313
#define USB_VENDOR_ID_TOPSEED 0x0766
#define USB_DEVICE_ID_TOPSEED_CYBERLINK 0x0204

7
drivers/hid/hid-topre.c
View file

@ -29,6 +29,11 @@ static const __u8 *topre_report_fixup(struct hid_device *hdev, __u8 *rdesc,
hid_info(hdev,
"fixing up Topre REALFORCE keyboard report descriptor\n");
rdesc[72] = 0x02;
} else if (*rsize >= 106 && rdesc[28] == 0x29 && rdesc[29] == 0xe7 &&
rdesc[30] == 0x81 && rdesc[31] == 0x00) {
hid_info(hdev,
"fixing up Topre REALFORCE keyboard report descriptor\n");
rdesc[31] = 0x02;
}
return rdesc;
}
@ -38,6 +43,8 @@ static const struct hid_device_id topre_id_table[] = {
USB_DEVICE_ID_TOPRE_REALFORCE_R2_108) },
{ HID_USB_DEVICE(USB_VENDOR_ID_TOPRE,
USB_DEVICE_ID_TOPRE_REALFORCE_R2_87) },
{ HID_USB_DEVICE(USB_VENDOR_ID_TOPRE,
USB_DEVICE_ID_TOPRE_REALFORCE_R3S_87) },
{ }
};
MODULE_DEVICE_TABLE(hid, topre_id_table);