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HID: evision: Fix Report Descriptor for Evision Wireless Receiver 320f:226f 

The mouse portion of the device's Report Descriptor declares 5 buttons but only
declares 3 usages (Button 1 through Button 3).  As a result events for the 2
side buttons are not generated.

Detect and repair the Report Descriptor if necessary by changing the Usage
Maximum value from Button 3 to Button 5.

[jkosina@suse.com: standardize changelog a little bit]
Reported-by: Artem <temabiill@gmail.com>
Closes: https://lore.kernel.org/all/CADYkRmrfhRf6VmQjc+su+mepyv=TsHc+aMcL6ryRZ5HTZ8pyFg@mail.gmail.com/
Signed-off-by: Terry Junge <linuxhid@cosmicgizmosystems.com>
Tested-by: Artem <temabiill@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.com>
This commit is contained in:
Terry Junge 2025-11-19 17:49:27 -08:00 committed by Jiri Kosina
parent 36dcfa4685
commit baa120439a
3 changed files with 23 additions and 0 deletions
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1
drivers/hid/Kconfig
View File

@ -383,6 +383,7 @@ config HID_EVISION
help
Support for some EVision keyboards. Note that this is needed only when
applying customization using userspace programs.
Support for some EVision devices requiring report descriptor fixups.
config HID_EZKEY
tristate "Ezkey BTC 8193 keyboard"

21
drivers/hid/hid-evision.c
View File

@ -18,6 +18,10 @@ static int evision_input_mapping(struct hid_device *hdev, struct hid_input *hi,
struct hid_field *field, struct hid_usage *usage,
unsigned long **bit, int *max)
{
/* mapping only applies to USB_DEVICE_ID_EVISION_ICL01 */
if (hdev->product != USB_DEVICE_ID_EVISION_ICL01)
return 0;
if ((usage->hid & HID_USAGE_PAGE) != HID_UP_CONSUMER)
return 0;
@ -37,8 +41,24 @@ static int evision_input_mapping(struct hid_device *hdev, struct hid_input *hi,
return 0;
}
#define REP_DSC_SIZE 236
#define USAGE_MAX_INDEX 59
static const __u8 *evision_report_fixup(struct hid_device *hdev, __u8 *rdesc,
unsigned int *rsize)
{
if (hdev->product == USB_DEVICE_ID_EV_TELINK_RECEIVER &&
*rsize == REP_DSC_SIZE && rdesc[USAGE_MAX_INDEX] == 0x29 &&
rdesc[USAGE_MAX_INDEX + 1] == 3) {
hid_info(hdev, "fixing EVision:TeLink Receiver report descriptor\n");
rdesc[USAGE_MAX_INDEX + 1] = 5; // change usage max from 3 to 5
}
return rdesc;
}
static const struct hid_device_id evision_devices[] = {
{ HID_USB_DEVICE(USB_VENDOR_ID_EVISION, USB_DEVICE_ID_EVISION_ICL01) },
{ HID_USB_DEVICE(USB_VENDOR_ID_EVISION, USB_DEVICE_ID_EV_TELINK_RECEIVER) },
{ }
};
MODULE_DEVICE_TABLE(hid, evision_devices);
@ -47,6 +67,7 @@ static struct hid_driver evision_driver = {
.name = "evision",
.id_table = evision_devices,
.input_mapping = evision_input_mapping,
.report_fixup = evision_report_fixup,
};
module_hid_driver(evision_driver);

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

@ -477,6 +477,7 @@
#define USB_DEVICE_ID_EMS_TRIO_LINKER_PLUS_II 0x0118
#define USB_VENDOR_ID_EVISION 0x320f
#define USB_DEVICE_ID_EV_TELINK_RECEIVER 0x226f
#define USB_DEVICE_ID_EVISION_ICL01 0x5041
#define USB_VENDOR_ID_FFBEAST 0x045b