HID: viewsonic: Support PD1011 signature pad

Add support for ViewSonic PD1011 signature (display) pad, which is also
sold by Signotec under a different name.

Signed-off-by: Nikolai Kondrashov <spbnick@gmail.com>
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>

diff --git a/drivers/hid/Kconfig b/drivers/hid/Kconfig
index 41e9935..4e4cacf 100644 (file)
--- a/drivers/hid/Kconfig
+++ b/drivers/hid/Kconfig
@@ -412,6 +412,12 @@ config HID_WALTOP
        ---help---
        Support for Waltop tablets.
 
+config HID_VIEWSONIC
+       tristate "ViewSonic/Signotec"
+       depends on HID
+       help
+         Support for ViewSonic/Signotec PD1011 signature pad.
+
 config HID_GYRATION
        tristate "Gyration remote control"
        depends on HID

diff --git a/drivers/hid/Makefile b/drivers/hid/Makefile
index 896a51c..a57e108 100644 (file)
--- a/drivers/hid/Makefile
+++ b/drivers/hid/Makefile
@@ -114,6 +114,7 @@ obj-$(CONFIG_HID_LED)               += hid-led.o
 obj-$(CONFIG_HID_XINMO)                += hid-xinmo.o
 obj-$(CONFIG_HID_ZEROPLUS)     += hid-zpff.o
 obj-$(CONFIG_HID_ZYDACRON)     += hid-zydacron.o
+obj-$(CONFIG_HID_VIEWSONIC)    += hid-viewsonic.o
 
 wacom-objs                     := wacom_wac.o wacom_sys.o
 obj-$(CONFIG_HID_WACOM)                += wacom.o

diff --git a/drivers/hid/hid-ids.h b/drivers/hid/hid-ids.h
index 2bef2fd..e23ec8f 100644 (file)
--- a/drivers/hid/hid-ids.h
+++ b/drivers/hid/hid-ids.h
@@ -1241,4 +1241,10 @@
 #define USB_VENDOR_ID_UGTIZER                  0x2179
 #define USB_DEVICE_ID_UGTIZER_TABLET_GP0610    0x0053
 
+#define USB_VENDOR_ID_VIEWSONIC                        0x0543
+#define USB_DEVICE_ID_VIEWSONIC_PD1011         0xe621
+
+#define USB_VENDOR_ID_SIGNOTEC                 0x2133
+#define USB_DEVICE_ID_SIGNOTEC_VIEWSONIC_PD1011        0x0018
+
 #endif

diff --git a/drivers/hid/hid-viewsonic.c b/drivers/hid/hid-viewsonic.c
new file mode 100644 (file)
index 0000000..df60c8f
--- /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, 0x02,             /*  Usage (Pen),                        */
+       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");