summaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
Diffstat
-rw-r--r--drivers/hid/Kconfig1
-rw-r--r--drivers/hid/hid-elecom.c78
-rw-r--r--drivers/hid/hid-ids.h2
-rw-r--r--drivers/hid/hid-quirks.c2
4 files changed, 47 insertions, 36 deletions
diff --git a/drivers/hid/Kconfig b/drivers/hid/Kconfig
index 9058dbc4dd6e..19c499f5623d 100644
--- a/drivers/hid/Kconfig
+++ b/drivers/hid/Kconfig
@@ -280,6 +280,7 @@ config HID_ELECOM
---help---
Support for ELECOM devices:
- BM084 Bluetooth Mouse
+ - EX-G Trackball (Wired and wireless)
- DEFT Trackball (Wired and wireless)
- HUGE Trackball (Wired and wireless)
diff --git a/drivers/hid/hid-elecom.c b/drivers/hid/hid-elecom.c
index 54aeea57d209..1a1ecc491c02 100644
--- a/drivers/hid/hid-elecom.c
+++ b/drivers/hid/hid-elecom.c
@@ -1,9 +1,15 @@
/*
- * HID driver for ELECOM devices.
+ * HID driver for ELECOM devices:
+ * - BM084 Bluetooth Mouse
+ * - EX-G Trackball (Wired and wireless)
+ * - DEFT Trackball (Wired and wireless)
+ * - HUGE Trackball (Wired and wireless)
+ *
* Copyright (c) 2010 Richard Nauber <Richard.Nauber@gmail.com>
* Copyright (c) 2016 Yuxuan Shui <yshuiv7@gmail.com>
* Copyright (c) 2017 Diego Elio Pettenò <flameeyes@flameeyes.eu>
* Copyright (c) 2017 Alex Manoussakis <amanou@gnu.org>
+ * Copyright (c) 2017 Tomasz Kramkowski <tk@the-tk.com>
*/
/*
@@ -19,6 +25,34 @@
#include "hid-ids.h"
+/*
+ * Certain ELECOM mice misreport their button count meaning that they only work
+ * correctly with the ELECOM mouse assistant software which is unavailable for
+ * Linux. A four extra INPUT reports and a FEATURE report are described by the
+ * report descriptor but it does not appear that these enable software to
+ * control what the extra buttons map to. The only simple and straightforward
+ * solution seems to involve fixing up the report descriptor.
+ *
+ * Report descriptor format:
+ * Positions 13, 15, 21 and 31 store the button bit count, button usage minimum,
+ * button usage maximum and padding bit count respectively.
+ */
+#define MOUSE_BUTTONS_MAX 8
+static void mouse_button_fixup(struct hid_device *hdev,
+ __u8 *rdesc, unsigned int rsize,
+ int nbuttons)
+{
+ if (rsize < 32 || rdesc[12] != 0x95 ||
+ rdesc[14] != 0x75 || rdesc[15] != 0x01 ||
+ rdesc[20] != 0x29 || rdesc[30] != 0x75)
+ return;
+ hid_info(hdev, "Fixing up Elecom mouse button count\n");
+ nbuttons = clamp(nbuttons, 0, MOUSE_BUTTONS_MAX);
+ rdesc[13] = nbuttons;
+ rdesc[21] = nbuttons;
+ rdesc[31] = MOUSE_BUTTONS_MAX - nbuttons;
+}
+
static __u8 *elecom_report_fixup(struct hid_device *hdev, __u8 *rdesc,
unsigned int *rsize)
{
@@ -31,45 +65,15 @@ static __u8 *elecom_report_fixup(struct hid_device *hdev, __u8 *rdesc,
rdesc[47] = 0x00;
}
break;
+ case USB_DEVICE_ID_ELECOM_EX_G_WIRED:
+ case USB_DEVICE_ID_ELECOM_EX_G_WIRELESS:
+ mouse_button_fixup(hdev, rdesc, *rsize, 6);
+ break;
case USB_DEVICE_ID_ELECOM_DEFT_WIRED:
case USB_DEVICE_ID_ELECOM_DEFT_WIRELESS:
case USB_DEVICE_ID_ELECOM_HUGE_WIRED:
case USB_DEVICE_ID_ELECOM_HUGE_WIRELESS:
- /* The DEFT/HUGE trackball has eight buttons, but its descriptor
- * only reports five, disabling the three Fn buttons on the top
- * of the mouse.
- *
- * Apply the following diff to the descriptor:
- *
- * Collection (Physical), Collection (Physical),
- * Report ID (1), Report ID (1),
- * Report Count (5), -> Report Count (8),
- * Report Size (1), Report Size (1),
- * Usage Page (Button), Usage Page (Button),
- * Usage Minimum (01h), Usage Minimum (01h),
- * Usage Maximum (05h), -> Usage Maximum (08h),
- * Logical Minimum (0), Logical Minimum (0),
- * Logical Maximum (1), Logical Maximum (1),
- * Input (Variable), Input (Variable),
- * Report Count (1), -> Report Count (0),
- * Report Size (3), Report Size (3),
- * Input (Constant), Input (Constant),
- * Report Size (16), Report Size (16),
- * Report Count (2), Report Count (2),
- * Usage Page (Desktop), Usage Page (Desktop),
- * Usage (X), Usage (X),
- * Usage (Y), Usage (Y),
- * Logical Minimum (-32768), Logical Minimum (-32768),
- * Logical Maximum (32767), Logical Maximum (32767),
- * Input (Variable, Relative), Input (Variable, Relative),
- * End Collection, End Collection,
- */
- if (*rsize == 213 && rdesc[13] == 5 && rdesc[21] == 5) {
- hid_info(hdev, "Fixing up Elecom DEFT/HUGE Fn buttons\n");
- rdesc[13] = 8; /* Button/Variable Report Count */
- rdesc[21] = 8; /* Button/Variable Usage Maximum */
- rdesc[29] = 0; /* Button/Constant Report Count */
- }
+ mouse_button_fixup(hdev, rdesc, *rsize, 8);
break;
}
return rdesc;
@@ -77,6 +81,8 @@ static __u8 *elecom_report_fixup(struct hid_device *hdev, __u8 *rdesc,
static const struct hid_device_id elecom_devices[] = {
{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ELECOM, USB_DEVICE_ID_ELECOM_BM084) },
+ { HID_USB_DEVICE(USB_VENDOR_ID_ELECOM, USB_DEVICE_ID_ELECOM_EX_G_WIRED) },
+ { HID_USB_DEVICE(USB_VENDOR_ID_ELECOM, USB_DEVICE_ID_ELECOM_EX_G_WIRELESS) },
{ HID_USB_DEVICE(USB_VENDOR_ID_ELECOM, USB_DEVICE_ID_ELECOM_DEFT_WIRED) },
{ HID_USB_DEVICE(USB_VENDOR_ID_ELECOM, USB_DEVICE_ID_ELECOM_DEFT_WIRELESS) },
{ HID_USB_DEVICE(USB_VENDOR_ID_ELECOM, USB_DEVICE_ID_ELECOM_HUGE_WIRED) },
diff --git a/drivers/hid/hid-ids.h b/drivers/hid/hid-ids.h
index 5da3d6256d25..d5daf2e638f7 100644
--- a/drivers/hid/hid-ids.h
+++ b/drivers/hid/hid-ids.h
@@ -370,6 +370,8 @@
#define USB_VENDOR_ID_ELECOM 0x056e
#define USB_DEVICE_ID_ELECOM_BM084 0x0061
+#define USB_DEVICE_ID_ELECOM_EX_G_WIRED 0x00fb
+#define USB_DEVICE_ID_ELECOM_EX_G_WIRELESS 0x00fc
#define USB_DEVICE_ID_ELECOM_DEFT_WIRED 0x00fe
#define USB_DEVICE_ID_ELECOM_DEFT_WIRELESS 0x00ff
#define USB_DEVICE_ID_ELECOM_HUGE_WIRED 0x010c
diff --git a/drivers/hid/hid-quirks.c b/drivers/hid/hid-quirks.c
index 20e68a7ac79f..2b43437401e6 100644
--- a/drivers/hid/hid-quirks.c
+++ b/drivers/hid/hid-quirks.c
@@ -335,6 +335,8 @@ static const struct hid_device_id hid_have_special_driver[] = {
#endif
#if IS_ENABLED(CONFIG_HID_ELECOM)
{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ELECOM, USB_DEVICE_ID_ELECOM_BM084) },
+ { HID_USB_DEVICE(USB_VENDOR_ID_ELECOM, USB_DEVICE_ID_ELECOM_EX_G_WIRED) },
+ { HID_USB_DEVICE(USB_VENDOR_ID_ELECOM, USB_DEVICE_ID_ELECOM_EX_G_WIRELESS) },
{ HID_USB_DEVICE(USB_VENDOR_ID_ELECOM, USB_DEVICE_ID_ELECOM_DEFT_WIRED) },
{ HID_USB_DEVICE(USB_VENDOR_ID_ELECOM, USB_DEVICE_ID_ELECOM_DEFT_WIRELESS) },
{ HID_USB_DEVICE(USB_VENDOR_ID_ELECOM, USB_DEVICE_ID_ELECOM_HUGE_WIRED) },
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-20 09:15:31 +0100