[PATCH] HID: apple: Add GANSS GS3104T PRO to the non-Apple keyboard list

[PATCH] HID: apple: Add GANSS GS3104T PRO to the non-Apple keyboard list

[DemonPlayer]

The GANSS GS3104T PRO is a tri-mode mechanical keyboard that reports
Apple's vendor and product IDs (05ac:024f) over USB, over its 2.4 GHz
receiver and over Bluetooth, so that macOS recognises it without a
vendor driver.  hid->name is built from the product string only and it
differs per connection mode:

  USB:        "HFD GS3104T PRO"   (iManufacturer is "HFD")
  2.4 GHz:    "GS3104T-PRO 2.4G"  (no iManufacturer)
  Bluetooth:  "GS3104T PRO"

All three descriptors carry the Apple Fn key usage (Usage Page 0xFF00,
Usage 0x03), so hid-apple claims the device in every mode and applies
the Apple function key layout: with the default fnmode=3,
hidinput_apple_event() resolves real_fnmode to 1 (fkeyslast), so the
F-row sends the media keys and Fn has to be held down to get F1-F12.
That is not the behaviour the keyboard has on other operating systems.

hid-apple already keeps a list of such keyboards and switches them to
the fnmode=2 (fkeysfirst) behaviour, but the match is a case-sensitive
strncmp() prefix test against hid->name and none of the three names
matches an existing entry: the "GANSS" one misses because the brand does
not appear in any of the descriptors, and "hfd.cn" does not match
either.  The non-Apple handling is thus never enabled and users have to
pass hid_apple.fnmode=2 on the kernel command line to get the expected
default.

Add all three names to non_apple_keyboards[].

Signed-off-by: DemonPlayer <a18165943161@gmail.com>
---
 drivers/hid/hid-apple.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/hid/hid-apple.c b/drivers/hid/hid-apple.c
index f6134c5..75092ee 100644
--- a/drivers/hid/hid-apple.c
+++ b/drivers/hid/hid-apple.c
@@ -373,6 +373,9 @@ static const struct apple_non_apple_keyboard non_apple_keyboards[] = {
 	{ "2.4G Wireless Receiver" },	/* EPOMAKER TH87 dongle */
 	{ "Thock TKL Wireless" },	/* ENDORFY THOCK TKL BT mode */
 	{ "USB Dongle" },		/* ENDORFY THOCK TKL dongle */
+	{ "HFD GS3104T PRO" },		/* GANSS GS3104T PRO USB mode */
+	{ "GS3104T-PRO 2.4G" },		/* GANSS GS3104T PRO 2.4G dongle */
+	{ "GS3104T PRO" },		/* GANSS GS3104T PRO Bluetooth */
 };
 
 static bool apple_is_non_apple_keyboard(struct hid_device *hdev)
-- 
2.56.0