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Date: Tue, 5 Nov 2013 14:45:06 +0100 (CET)
From: Jiri Kosina <jkosina@...e.cz>
To: Peter De Wachter <pdewacht@...il.com>
Cc: linux-input@...r.kernel.org, linux-kernel@...r.kernel.org,
Bernhard Seibold <mail@...nhard-seibold.de>
Subject: Re: [PATCH] hid: add driver for IBM/Lenovo ScrollPoint mice
On Mon, 5 Aug 2013, Jiri Kosina wrote:
> > 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@...il.com>
>
> Hi,
>
> thanks for the driver.
>
> I'd like to ask you to put a few more effort into this, unifying this a
> little bit more with the existing driver for Lenovo devices we aready have
> in the tree -- hid-lenovo-tpkbd.
>
> As most of the drivers are divided on a per-vendor basis anyway, what I'd
> probably like to see the most would be:
>
> - drop HID_LENOVO_TPKBD (*)
> - create HID_LENOVO
> - rename your driver to hid-lenovo-scrollpoint
> - build both hid-lenovo-tpkbd and hid-lenovo-scrollpoint when HID_LENOVO
> is set
>
> (*) or keep it for compatibility reasons, but make it just an alias for
> CONFIG_HID_LENOVO.
>
> Sounds feasible?
Peter, what are your plans with this, please?
>
> > ---
> > 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@...il.com>
> > + */
> > +
> > +/*
> > + * 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
> >
>
> --
> Jiri Kosina
> SUSE Labs
>
--
Jiri Kosina
SUSE Labs
--
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