[PATCH] hid: add driver for IBM/Lenovo ScrollPoint mice
From: Peter De Wachter
Date: Tue Jul 02 2013 - 18:49:16 EST
IBM Scrollpoint have a trackpoint-like gizmo instead of a scroll wheel,
which allows for two-dimensional scrolling. This driver provides an
input mapping to make that work.
The scrollpoint is also much more sensitive than a typical mouse wheel.
X can use this to provide smooth scrolling, but the kernel doesn't seem
to have a way to communicate this fact. As a result this mouse simply
scrolls way too fast. For now I've created an xorg patch to provide a
manual setting (fdo #48118).
Signed-off-by: Peter De Wachter <pdewacht@xxxxxxxxx>
---
drivers/hid/Kconfig | 8 ++++++
drivers/hid/Makefile | 1 +
drivers/hid/hid-core.c | 7 +++++
drivers/hid/hid-ids.h | 7 +++++
drivers/hid/hid-scrollpoint.c | 67 +++++++++++++++++++++++++++++++++++++++++++
5 files changed, 90 insertions(+)
create mode 100644 drivers/hid/hid-scrollpoint.c
diff --git a/drivers/hid/Kconfig b/drivers/hid/Kconfig
index fb52f3f..fdc49ca 100644
--- a/drivers/hid/Kconfig
+++ b/drivers/hid/Kconfig
@@ -593,6 +593,14 @@ config HID_SAMSUNG
---help---
Support for Samsung InfraRed remote control or keyboards.
+config HID_SCROLLPOINT
+ tristate "IBM/Lenovo ScrollPoint mice"
+ depends on HID
+ ---help---
+ Support for IBM/Lenovo ScrollPoint mice.
+ Say Y here if you have a ScrollPoint mouse and want horizontal
+ scrolling to work.
+
config HID_SONY
tristate "Sony PS3 controller"
depends on USB_HID
diff --git a/drivers/hid/Makefile b/drivers/hid/Makefile
index 2065694..4a4c279 100644
--- a/drivers/hid/Makefile
+++ b/drivers/hid/Makefile
@@ -99,6 +99,7 @@ obj-$(CONFIG_HID_ROCCAT) += hid-roccat.o hid-roccat-common.o \
hid-roccat-lua.o hid-roccat-pyra.o hid-roccat-savu.o
obj-$(CONFIG_HID_SAITEK) += hid-saitek.o
obj-$(CONFIG_HID_SAMSUNG) += hid-samsung.o
+obj-$(CONFIG_HID_SCROLLPOINT) += hid-scrollpoint.o
obj-$(CONFIG_HID_SMARTJOYPLUS) += hid-sjoy.o
obj-$(CONFIG_HID_SONY) += hid-sony.o
obj-$(CONFIG_HID_SPEEDLINK) += hid-speedlink.o
diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c
index 264f550..003f419 100644
--- a/drivers/hid/hid-core.c
+++ b/drivers/hid/hid-core.c
@@ -1584,6 +1584,13 @@ static const struct hid_device_id hid_have_special_driver[] = {
{ HID_USB_DEVICE(USB_VENDOR_ID_GYRATION, USB_DEVICE_ID_GYRATION_REMOTE_3) },
{ HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK, USB_DEVICE_ID_HOLTEK_ON_LINE_GRIP) },
{ HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT, USB_DEVICE_ID_HOLTEK_ALT_KEYBOARD) },
+#if IS_ENABLED(CONFIG_HID_SCROLLPOINT)
+ { HID_USB_DEVICE(USB_VENDOR_ID_IBM, USB_DEVICE_ID_IBM_SCROLLPOINT_III) },
+ { HID_USB_DEVICE(USB_VENDOR_ID_IBM, USB_DEVICE_ID_IBM_SCROLLPOINT_PRO) },
+ { HID_USB_DEVICE(USB_VENDOR_ID_IBM, USB_DEVICE_ID_IBM_SCROLLPOINT_OPTICAL) },
+ { HID_USB_DEVICE(USB_VENDOR_ID_IBM, USB_DEVICE_ID_IBM_SCROLLPOINT_800DPI_OPTICAL) },
+ { HID_USB_DEVICE(USB_VENDOR_ID_IBM, USB_DEVICE_ID_IBM_SCROLLPOINT_800DPI_OPTICAL_PRO) },
+#endif
{ HID_USB_DEVICE(USB_VENDOR_ID_JESS2, USB_DEVICE_ID_JESS2_COLOR_RUMBLE_PAD) },
{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ION, USB_DEVICE_ID_ICADE) },
{ HID_USB_DEVICE(USB_VENDOR_ID_KENSINGTON, USB_DEVICE_ID_KS_SLIMBLADE) },
diff --git a/drivers/hid/hid-ids.h b/drivers/hid/hid-ids.h
index 38535c9..f813fab 100644
--- a/drivers/hid/hid-ids.h
+++ b/drivers/hid/hid-ids.h
@@ -441,6 +441,13 @@
#define USB_VENDOR_ID_HOLTEK_ALT 0x04d9
#define USB_DEVICE_ID_HOLTEK_ALT_KEYBOARD 0xa055
+#define USB_VENDOR_ID_IBM 0x04b3
+#define USB_DEVICE_ID_IBM_SCROLLPOINT_III 0x3100
+#define USB_DEVICE_ID_IBM_SCROLLPOINT_PRO 0x3103
+#define USB_DEVICE_ID_IBM_SCROLLPOINT_OPTICAL 0x3105
+#define USB_DEVICE_ID_IBM_SCROLLPOINT_800DPI_OPTICAL 0x3108
+#define USB_DEVICE_ID_IBM_SCROLLPOINT_800DPI_OPTICAL_PRO 0x3109
+
#define USB_VENDOR_ID_IMATION 0x0718
#define USB_DEVICE_ID_DISC_STAKKA 0xd000
diff --git a/drivers/hid/hid-scrollpoint.c b/drivers/hid/hid-scrollpoint.c
new file mode 100644
index 0000000..48e7696
--- /dev/null
+++ b/drivers/hid/hid-scrollpoint.c
@@ -0,0 +1,67 @@
+/*
+ * HID driver for IBM/Lenovo ScrollPoint mice
+ *
+ * Copyright (c) 2012 Peter De Wachter <pdewacht@xxxxxxxxx>
+ */
+
+/*
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
+ */
+
+#include <linux/device.h>
+#include <linux/hid.h>
+#include <linux/module.h>
+
+#include "hid-ids.h"
+
+static int scrollpoint_input_mapping(struct hid_device *hdev,
+ struct hid_input *hi, struct hid_field *field,
+ struct hid_usage *usage, unsigned long **bit, int *max)
+{
+ if (usage->hid == HID_GD_Z) {
+ hid_map_usage(hi, usage, bit, max, EV_REL, REL_HWHEEL);
+ return 1;
+ }
+ return 0;
+}
+
+static const struct hid_device_id scrollpoint_devices[] = {
+ { HID_USB_DEVICE(USB_VENDOR_ID_IBM,
+ USB_DEVICE_ID_IBM_SCROLLPOINT_III) },
+ { HID_USB_DEVICE(USB_VENDOR_ID_IBM,
+ USB_DEVICE_ID_IBM_SCROLLPOINT_PRO) },
+ { HID_USB_DEVICE(USB_VENDOR_ID_IBM,
+ USB_DEVICE_ID_IBM_SCROLLPOINT_OPTICAL) },
+ { HID_USB_DEVICE(USB_VENDOR_ID_IBM,
+ USB_DEVICE_ID_IBM_SCROLLPOINT_800DPI_OPTICAL) },
+ { HID_USB_DEVICE(USB_VENDOR_ID_IBM,
+ USB_DEVICE_ID_IBM_SCROLLPOINT_800DPI_OPTICAL_PRO) },
+ { }
+};
+MODULE_DEVICE_TABLE(hid, scrollpoint_devices);
+
+static struct hid_driver scrollpoint_driver = {
+ .name = "scrollpoint",
+ .id_table = scrollpoint_devices,
+ .input_mapping = scrollpoint_input_mapping
+};
+
+static int __init scrollpoint_init(void)
+{
+ return hid_register_driver(&scrollpoint_driver);
+}
+
+static void __exit scrollpoint_exit(void)
+{
+ hid_unregister_driver(&scrollpoint_driver);
+}
+
+module_init(scrollpoint_init);
+module_exit(scrollpoint_exit);
+
+MODULE_AUTHOR("Peter De Wachter");
+MODULE_DESCRIPTION("IBM/Lenovo ScrollPoint mouse driver");
+MODULE_LICENSE("GPL");
--
1.8.3.2
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