diff options
Diffstat (limited to 'drivers/hid/hid-viewsonic.c')
| -rw-r--r-- | drivers/hid/hid-viewsonic.c | 105 |
1 files changed, 105 insertions, 0 deletions
diff --git a/drivers/hid/hid-viewsonic.c b/drivers/hid/hid-viewsonic.c new file mode 100644 index 0000000000..8024b1d370 --- /dev/null +++ b/drivers/hid/hid-viewsonic.c @@ -0,0 +1,105 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * HID driver for ViewSonic devices not fully compliant with HID standard + * + * Copyright (c) 2017 Nikolai Kondrashov + */ + +/* + * 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" + +/* Size of the original descriptor of PD1011 signature pad */ +#define PD1011_RDESC_ORIG_SIZE 408 + +/* Fixed report descriptor of PD1011 signature pad */ +static __u8 pd1011_rdesc_fixed[] = { + 0x05, 0x0D, /* Usage Page (Digitizer), */ + 0x09, 0x01, /* Usage (Digitizer), */ + 0xA1, 0x01, /* Collection (Application), */ + 0x85, 0x02, /* Report ID (2), */ + 0x09, 0x20, /* Usage (Stylus), */ + 0xA0, /* Collection (Physical), */ + 0x75, 0x10, /* Report Size (16), */ + 0x95, 0x01, /* Report Count (1), */ + 0xA4, /* Push, */ + 0x05, 0x01, /* Usage Page (Desktop), */ + 0x65, 0x13, /* Unit (Inch), */ + 0x55, 0xFD, /* Unit Exponent (-3), */ + 0x34, /* Physical Minimum (0), */ + 0x09, 0x30, /* Usage (X), */ + 0x46, 0x5D, 0x21, /* Physical Maximum (8541), */ + 0x27, 0x80, 0xA9, + 0x00, 0x00, /* Logical Maximum (43392), */ + 0x81, 0x02, /* Input (Variable), */ + 0x09, 0x31, /* Usage (Y), */ + 0x46, 0xDA, 0x14, /* Physical Maximum (5338), */ + 0x26, 0xF0, 0x69, /* Logical Maximum (27120), */ + 0x81, 0x02, /* Input (Variable), */ + 0xB4, /* Pop, */ + 0x14, /* Logical Minimum (0), */ + 0x25, 0x01, /* Logical Maximum (1), */ + 0x75, 0x01, /* Report Size (1), */ + 0x95, 0x01, /* Report Count (1), */ + 0x81, 0x03, /* Input (Constant, Variable), */ + 0x09, 0x32, /* Usage (In Range), */ + 0x09, 0x42, /* Usage (Tip Switch), */ + 0x95, 0x02, /* Report Count (2), */ + 0x81, 0x02, /* Input (Variable), */ + 0x95, 0x05, /* Report Count (5), */ + 0x81, 0x03, /* Input (Constant, Variable), */ + 0x75, 0x10, /* Report Size (16), */ + 0x95, 0x01, /* Report Count (1), */ + 0x09, 0x30, /* Usage (Tip Pressure), */ + 0x15, 0x05, /* Logical Minimum (5), */ + 0x26, 0xFF, 0x07, /* Logical Maximum (2047), */ + 0x81, 0x02, /* Input (Variable), */ + 0x75, 0x10, /* Report Size (16), */ + 0x95, 0x01, /* Report Count (1), */ + 0x81, 0x03, /* Input (Constant, Variable), */ + 0xC0, /* End Collection, */ + 0xC0 /* End Collection */ +}; + +static __u8 *viewsonic_report_fixup(struct hid_device *hdev, __u8 *rdesc, + unsigned int *rsize) +{ + switch (hdev->product) { + case USB_DEVICE_ID_VIEWSONIC_PD1011: + case USB_DEVICE_ID_SIGNOTEC_VIEWSONIC_PD1011: + if (*rsize == PD1011_RDESC_ORIG_SIZE) { + rdesc = pd1011_rdesc_fixed; + *rsize = sizeof(pd1011_rdesc_fixed); + } + break; + } + + return rdesc; +} + +static const struct hid_device_id viewsonic_devices[] = { + { HID_USB_DEVICE(USB_VENDOR_ID_VIEWSONIC, + USB_DEVICE_ID_VIEWSONIC_PD1011) }, + { HID_USB_DEVICE(USB_VENDOR_ID_SIGNOTEC, + USB_DEVICE_ID_SIGNOTEC_VIEWSONIC_PD1011) }, + { } +}; +MODULE_DEVICE_TABLE(hid, viewsonic_devices); + +static struct hid_driver viewsonic_driver = { + .name = "viewsonic", + .id_table = viewsonic_devices, + .report_fixup = viewsonic_report_fixup, +}; +module_hid_driver(viewsonic_driver); + +MODULE_LICENSE("GPL"); |