[PATCH 5.15 05/22] HID: elecom: add support for TrackBall 056E:011C

Greg Kroah-Hartman
2023-03-01T18:11:12Z

From: Takahiro Fujii <fujii@xaxxi.net>

[ Upstream commit 29f316a1d7e0a570be9a47fa283ece53a67cebb7 ]

Make function buttons on ELECOM M-HT1DRBK trackball mouse work. This model
has two devices with different device IDs (010D and 011C). Both of
them misreports the number of buttons as 5 in the report descriptor, even
though they have 8 buttons. hid-elecom overwrites the report to fix them,
but supports only on 010D and does not work on 011C. This patch fixes
011C in the similar way but with specialized position parameters.
In fact, it is sufficient to rewrite only 17th byte (05 -> 08). However I
followed the existing way.

Signed-off-by: Takahiro Fujii <fujii@xaxxi.net>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/hid/hid-elecom.c | 16 ++++++++++++++--
drivers/hid/hid-ids.h | 3 ++-
drivers/hid/hid-quirks.c | 3 ++-
3 files changed, 18 insertions(+), 4 deletions(-)

diff --git a/drivers/hid/hid-elecom.c b/drivers/hid/hid-elecom.c
index e59e9911fc370..4fa45ee77503b 100644
--- a/drivers/hid/hid-elecom.c
+++ b/drivers/hid/hid-elecom.c
@@ -12,6 +12,7 @@
* Copyright (c) 2017 Alex Manoussakis <amanou@gnu.org>
* Copyright (c) 2017 Tomasz Kramkowski <tk@the-tk.com>
* Copyright (c) 2020 YOSHIOKA Takuma <lo48576@hard-wi.red>
+ * Copyright (c) 2022 Takahiro Fujii <fujii@xaxxi.net>
*/

/*
@@ -89,7 +90,7 @@ static __u8 *elecom_report_fixup(struct hid_device *hdev, __u8 *rdesc,
case USB_DEVICE_ID_ELECOM_M_DT1URBK:
case USB_DEVICE_ID_ELECOM_M_DT1DRBK:
case USB_DEVICE_ID_ELECOM_M_HT1URBK:
- case USB_DEVICE_ID_ELECOM_M_HT1DRBK:
+ case USB_DEVICE_ID_ELECOM_M_HT1DRBK_010D:
/*
* Report descriptor format:
* 12: button bit count
@@ -99,6 +100,16 @@ static __u8 *elecom_report_fixup(struct hid_device *hdev, __u8 *rdesc,
*/
mouse_button_fixup(hdev, rdesc, *rsize, 12, 30, 14, 20, 8);
break;
+ case USB_DEVICE_ID_ELECOM_M_HT1DRBK_011C:
+ /*
+ * Report descriptor format:
+ * 22: button bit count
+ * 30: padding bit count
+ * 24: button report size
+ * 16: button usage maximum
+ */
+ mouse_button_fixup(hdev, rdesc, *rsize, 22, 30, 24, 16, 8);
+ break;
}
return rdesc;
}
@@ -112,7 +123,8 @@ static const struct hid_device_id elecom_devices[] = {
{ HID_USB_DEVICE(USB_VENDOR_ID_ELECOM, USB_DEVICE_ID_ELECOM_M_DT1URBK) },
{ HID_USB_DEVICE(USB_VENDOR_ID_ELECOM, USB_DEVICE_ID_ELECOM_M_DT1DRBK) },
{ HID_USB_DEVICE(USB_VENDOR_ID_ELECOM, USB_DEVICE_ID_ELECOM_M_HT1URBK) },
- { HID_USB_DEVICE(USB_VENDOR_ID_ELECOM, USB_DEVICE_ID_ELECOM_M_HT1DRBK) },
+ { HID_USB_DEVICE(USB_VENDOR_ID_ELECOM, USB_DEVICE_ID_ELECOM_M_HT1DRBK_010D) },
+ { HID_USB_DEVICE(USB_VENDOR_ID_ELECOM, USB_DEVICE_ID_ELECOM_M_HT1DRBK_011C) },
{ }
};
MODULE_DEVICE_TABLE(hid, elecom_devices);
diff --git a/drivers/hid/hid-ids.h b/drivers/hid/hid-ids.h
index fa1aa22547ea7..b153ddc3319e8 100644
--- a/drivers/hid/hid-ids.h
+++ b/drivers/hid/hid-ids.h
@@ -410,7 +410,8 @@
#define USB_DEVICE_ID_ELECOM_M_DT1URBK 0x00fe
#define USB_DEVICE_ID_ELECOM_M_DT1DRBK 0x00ff
#define USB_DEVICE_ID_ELECOM_M_HT1URBK 0x010c
-#define USB_DEVICE_ID_ELECOM_M_HT1DRBK 0x010d
+#define USB_DEVICE_ID_ELECOM_M_HT1DRBK_010D 0x010d
+#define USB_DEVICE_ID_ELECOM_M_HT1DRBK_011C 0x011c

#define USB_VENDOR_ID_DREAM_CHEEKY 0x1d34
#define USB_DEVICE_ID_DREAM_CHEEKY_WN 0x0004
diff --git a/drivers/hid/hid-quirks.c b/drivers/hid/hid-quirks.c
index 184029cad014f..4a8c32148e58f 100644
--- a/drivers/hid/hid-quirks.c
+++ b/drivers/hid/hid-quirks.c
@@ -381,7 +381,8 @@ static const struct hid_device_id hid_have_special_driver[] = {
{ HID_USB_DEVICE(USB_VENDOR_ID_ELECOM, USB_DEVICE_ID_ELECOM_M_DT1URBK) },
{ HID_USB_DEVICE(USB_VENDOR_ID_ELECOM, USB_DEVICE_ID_ELECOM_M_DT1DRBK) },
{ HID_USB_DEVICE(USB_VENDOR_ID_ELECOM, USB_DEVICE_ID_ELECOM_M_HT1URBK) },
- { HID_USB_DEVICE(USB_VENDOR_ID_ELECOM, USB_DEVICE_ID_ELECOM_M_HT1DRBK) },
+ { HID_USB_DEVICE(USB_VENDOR_ID_ELECOM, USB_DEVICE_ID_ELECOM_M_HT1DRBK_010D) },
+ { HID_USB_DEVICE(USB_VENDOR_ID_ELECOM, USB_DEVICE_ID_ELECOM_M_HT1DRBK_011C) },
#endif
#if IS_ENABLED(CONFIG_HID_ELO)
{ HID_USB_DEVICE(USB_VENDOR_ID_ELO, 0x0009) },
--
2.39.0