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[1/2] HID: uclogic: Support HUION devices with up to 20 buttons

Message ID 20240524112554.166746-2-jose.exposito89@gmail.com
State Accepted
Commit 48144e83daba5619adaf0baf4fcea98082dce818
Headers show
Series Improve HUION Kamvas Pro 24 support | expand

Commit Message

José Expósito May 24, 2024, 11:21 a.m. UTC 
The HID descriptor for HUION tablets was limited to 13 buttons. However,
there are devices with more buttons in their frames.

So far, the device with more buttons released by HUION is the Huion
Kamvas Pro 24 (GT-240, QHD) [1], with 20 buttons.

Tweak the HID descriptor to support it.

Link: https://gitlab.freedesktop.org/libinput/libinput/-/issues/989  [1]
Signed-off-by: José Expósito <jose.exposito89@gmail.com>
---
 drivers/hid/hid-uclogic-rdesc.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)
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Patch

diff --git a/drivers/hid/hid-uclogic-rdesc.c b/drivers/hid/hid-uclogic-rdesc.c
index b6dfdf6356a6..7cbd673747a5 100644
--- a/drivers/hid/hid-uclogic-rdesc.c
+++ b/drivers/hid/hid-uclogic-rdesc.c
@@ -689,10 +689,10 @@  const size_t uclogic_rdesc_v2_pen_template_size =
 	0xA0,           /*      Collection (Physical),          */ \
 	0x05, 0x09,     /*          Usage Page (Button),        */ \
 	0x19, 0x01,     /*          Usage Minimum (01h),        */ \
-	0x29, 0x03,     /*          Usage Maximum (03h),        */ \
-	0x95, 0x03,     /*          Report Count (3),           */ \
+	0x29, 0x0A,     /*          Usage Maximum (0Ah),        */ \
+	0x95, 0x0A,     /*          Report Count (10),          */ \
 	0x81, 0x02,     /*          Input (Variable),           */ \
-	0x95, ((_size) * 8 - 45),                                  \
+	0x95, ((_size) * 8 - 52),                                  \
 			/*          Report Count (padding),     */ \
 	0x81, 0x01,     /*          Input (Constant),           */ \
 	0xC0,           /*      End Collection,                 */ \