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authorRafi Rubin <rafi@seas.upenn.edu>2008-11-19 17:54:46 +0300
committerJiri Kosina <jkosina@suse.cz>2009-01-04 03:00:51 +0300
commit94011f93f2cd7410401e22390cf7a14fe5495a22 (patch)
treeb0e96a437574d2a5ce9f34d695b8f78bdc2c3916 /drivers/hid/hid-ntrig.c
parent9188e79ec3fd43a0a605274324aecfb731baa88b (diff)
downloadlinux-94011f93f2cd7410401e22390cf7a14fe5495a22.tar.xz
HID: add n-trig digitizer support
Added quirks for the N-Trig digitizer. Signed-off-by: Rafi Rubin <rafi@seas.upenn.edu> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Diffstat (limited to 'drivers/hid/hid-ntrig.c')
-rw-r--r--drivers/hid/hid-ntrig.c82
1 files changed, 82 insertions, 0 deletions
diff --git a/drivers/hid/hid-ntrig.c b/drivers/hid/hid-ntrig.c
new file mode 100644
index 000000000000..db44fbd7bdf6
--- /dev/null
+++ b/drivers/hid/hid-ntrig.c
@@ -0,0 +1,82 @@
+/*
+ * HID driver for some ntrig "special" devices
+ *
+ * Copyright (c) 1999 Andreas Gal
+ * Copyright (c) 2000-2005 Vojtech Pavlik <vojtech@suse.cz>
+ * Copyright (c) 2005 Michael Haboustak <mike-@cinci.rr.com> for Concept2, Inc
+ * Copyright (c) 2006-2007 Jiri Kosina
+ * Copyright (c) 2007 Paul Walmsley
+ * Copyright (c) 2008 Jiri Slaby
+ * Copyright (c) 2008 Rafi Rubin
+ *
+ */
+
+/*
+ * 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"
+
+#define NTRIG_DUPLICATE_USAGES 0x001
+
+#define nt_map_key_clear(c) hid_map_usage_clear(hi, usage, bit, max, \
+ EV_KEY, (c))
+
+static int ntrig_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_USAGE_PAGE) == HID_UP_DIGITIZER &&
+ (usage->hid & 0xff) == 0x47) {
+ nt_map_key_clear(BTN_TOOL_DOUBLETAP);
+ return 1;
+ }
+ return 0;
+}
+
+static int ntrig_input_mapped(struct hid_device *hdev, struct hid_input *hi,
+ struct hid_field *field, struct hid_usage *usage,
+ unsigned long **bit, int *max)
+{
+ if (usage->type == EV_KEY || usage->type == EV_REL
+ || usage->type == EV_ABS)
+ clear_bit(usage->code, *bit);
+
+ return 0;
+}
+static const struct hid_device_id ntrig_devices[] = {
+ { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN),
+ .driver_data = NTRIG_DUPLICATE_USAGES },
+ { }
+};
+MODULE_DEVICE_TABLE(hid, ntrig_devices);
+
+static struct hid_driver ntrig_driver = {
+ .name = "ntrig",
+ .id_table = ntrig_devices,
+ .input_mapping = ntrig_input_mapping,
+ .input_mapped = ntrig_input_mapped,
+};
+
+static int ntrig_init(void)
+{
+ return hid_register_driver(&ntrig_driver);
+}
+
+static void ntrig_exit(void)
+{
+ hid_unregister_driver(&ntrig_driver);
+}
+
+module_init(ntrig_init);
+module_exit(ntrig_exit);
+MODULE_LICENSE("GPL");
+
+HID_COMPAT_LOAD_DRIVER(ntrig);