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Diffstat (limited to 'drivers/hid/hid-egalax.c')
-rw-r--r--drivers/hid/hid-egalax.c279
1 files changed, 0 insertions, 279 deletions
diff --git a/drivers/hid/hid-egalax.c b/drivers/hid/hid-egalax.c
deleted file mode 100644
index 03bee1970d70..000000000000
--- a/drivers/hid/hid-egalax.c
+++ /dev/null
@@ -1,279 +0,0 @@
-/*
- * HID driver for eGalax dual-touch panels
- *
- * Copyright (c) 2010 Stephane Chatty <chatty@enac.fr>
- * Copyright (c) 2010 Henrik Rydberg <rydberg@euromail.se>
- * Copyright (c) 2010 Canonical, Ltd.
- *
- */
-
-/*
- * 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 <linux/usb.h>
-#include <linux/input/mt.h>
-#include <linux/slab.h>
-#include "usbhid/usbhid.h"
-
-MODULE_AUTHOR("Stephane Chatty <chatty@enac.fr>");
-MODULE_DESCRIPTION("eGalax dual-touch panel");
-MODULE_LICENSE("GPL");
-
-#include "hid-ids.h"
-
-#define MAX_SLOTS 2
-
-/* estimated signal-to-noise ratios */
-#define SN_MOVE 4096
-#define SN_PRESSURE 32
-
-struct egalax_data {
- int valid;
- int slot;
- int touch;
- int x, y, z;
-};
-
-static void set_abs(struct input_dev *input, unsigned int code,
- struct hid_field *field, int snratio)
-{
- int fmin = field->logical_minimum;
- int fmax = field->logical_maximum;
- int fuzz = snratio ? (fmax - fmin) / snratio : 0;
- input_set_abs_params(input, code, fmin, fmax, fuzz, 0);
-}
-
-static int egalax_input_mapping(struct hid_device *hdev, struct hid_input *hi,
- struct hid_field *field, struct hid_usage *usage,
- unsigned long **bit, int *max)
-{
- struct input_dev *input = hi->input;
-
- switch (usage->hid & HID_USAGE_PAGE) {
-
- case HID_UP_GENDESK:
- switch (usage->hid) {
- case HID_GD_X:
- field->logical_maximum = 32760;
- hid_map_usage(hi, usage, bit, max,
- EV_ABS, ABS_MT_POSITION_X);
- set_abs(input, ABS_MT_POSITION_X, field, SN_MOVE);
- /* touchscreen emulation */
- set_abs(input, ABS_X, field, SN_MOVE);
- return 1;
- case HID_GD_Y:
- field->logical_maximum = 32760;
- hid_map_usage(hi, usage, bit, max,
- EV_ABS, ABS_MT_POSITION_Y);
- set_abs(input, ABS_MT_POSITION_Y, field, SN_MOVE);
- /* touchscreen emulation */
- set_abs(input, ABS_Y, field, SN_MOVE);
- return 1;
- }
- return 0;
-
- case HID_UP_DIGITIZER:
- switch (usage->hid) {
- case HID_DG_TIPSWITCH:
- /* touchscreen emulation */
- hid_map_usage(hi, usage, bit, max, EV_KEY, BTN_TOUCH);
- input_set_capability(input, EV_KEY, BTN_TOUCH);
- return 1;
- case HID_DG_INRANGE:
- case HID_DG_CONFIDENCE:
- case HID_DG_CONTACTCOUNT:
- case HID_DG_CONTACTMAX:
- return -1;
- case HID_DG_CONTACTID:
- input_mt_init_slots(input, MAX_SLOTS);
- return 1;
- case HID_DG_TIPPRESSURE:
- field->logical_minimum = 0;
- hid_map_usage(hi, usage, bit, max,
- EV_ABS, ABS_MT_PRESSURE);
- set_abs(input, ABS_MT_PRESSURE, field, SN_PRESSURE);
- /* touchscreen emulation */
- set_abs(input, ABS_PRESSURE, field, SN_PRESSURE);
- return 1;
- }
- return 0;
- }
-
- /* ignore others (from other reports we won't get anyway) */
- return -1;
-}
-
-static int egalax_input_mapped(struct hid_device *hdev, struct hid_input *hi,
- struct hid_field *field, struct hid_usage *usage,
- unsigned long **bit, int *max)
-{
- /* tell hid-input to skip setup of these event types */
- if (usage->type == EV_KEY || usage->type == EV_ABS)
- set_bit(usage->type, hi->input->evbit);
- return -1;
-}
-
-/*
- * this function is called when a whole finger has been parsed,
- * so that it can decide what to send to the input layer.
- */
-static void egalax_filter_event(struct egalax_data *td, struct input_dev *input)
-{
- input_mt_slot(input, td->slot);
- input_mt_report_slot_state(input, MT_TOOL_FINGER, td->touch);
- if (td->touch) {
- input_event(input, EV_ABS, ABS_MT_POSITION_X, td->x);
- input_event(input, EV_ABS, ABS_MT_POSITION_Y, td->y);
- input_event(input, EV_ABS, ABS_MT_PRESSURE, td->z);
- }
- input_mt_report_pointer_emulation(input, true);
-}
-
-static int egalax_event(struct hid_device *hid, struct hid_field *field,
- struct hid_usage *usage, __s32 value)
-{
- struct egalax_data *td = hid_get_drvdata(hid);
-
- /* Note, eGalax has two product lines: the first is resistive and
- * uses a standard parallel multitouch protocol (product ID ==
- * 48xx). The second is capacitive and uses an unusual "serial"
- * protocol with a different message for each multitouch finger
- * (product ID == 72xx).
- */
- if (hid->claimed & HID_CLAIMED_INPUT) {
- struct input_dev *input = field->hidinput->input;
-
- switch (usage->hid) {
- case HID_DG_INRANGE:
- td->valid = value;
- break;
- case HID_DG_CONFIDENCE:
- /* avoid interference from generic hidinput handling */
- break;
- case HID_DG_TIPSWITCH:
- td->touch = value;
- break;
- case HID_DG_TIPPRESSURE:
- td->z = value;
- break;
- case HID_DG_CONTACTID:
- td->slot = clamp_val(value, 0, MAX_SLOTS - 1);
- break;
- case HID_GD_X:
- td->x = value;
- break;
- case HID_GD_Y:
- td->y = value;
- /* this is the last field in a finger */
- if (td->valid)
- egalax_filter_event(td, input);
- break;
- case HID_DG_CONTACTCOUNT:
- /* touch emulation: this is the last field in a frame */
- break;
-
- default:
- /* fallback to the generic hidinput handling */
- return 0;
- }
- }
-
- /* we have handled the hidinput part, now remains hiddev */
- if (hid->claimed & HID_CLAIMED_HIDDEV && hid->hiddev_hid_event)
- hid->hiddev_hid_event(hid, field, usage, value);
-
- return 1;
-}
-
-static int egalax_probe(struct hid_device *hdev, const struct hid_device_id *id)
-{
- int ret;
- struct egalax_data *td;
- struct hid_report *report;
-
- td = kzalloc(sizeof(struct egalax_data), GFP_KERNEL);
- if (!td) {
- hid_err(hdev, "cannot allocate eGalax data\n");
- return -ENOMEM;
- }
- hid_set_drvdata(hdev, td);
-
- ret = hid_parse(hdev);
- if (ret)
- goto end;
-
- ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
- if (ret)
- goto end;
-
- report = hdev->report_enum[HID_FEATURE_REPORT].report_id_hash[5];
- if (report) {
- report->field[0]->value[0] = 2;
- usbhid_submit_report(hdev, report, USB_DIR_OUT);
- }
-
-end:
- if (ret)
- kfree(td);
-
- return ret;
-}
-
-static void egalax_remove(struct hid_device *hdev)
-{
- hid_hw_stop(hdev);
- kfree(hid_get_drvdata(hdev));
- hid_set_drvdata(hdev, NULL);
-}
-
-static const struct hid_device_id egalax_devices[] = {
- { HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
- USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH) },
- { HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
- USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH1) },
- { HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
- USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH2) },
- { HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
- USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH3) },
- { HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
- USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH4) },
- { }
-};
-MODULE_DEVICE_TABLE(hid, egalax_devices);
-
-static const struct hid_usage_id egalax_grabbed_usages[] = {
- { HID_ANY_ID, HID_ANY_ID, HID_ANY_ID },
- { HID_ANY_ID - 1, HID_ANY_ID - 1, HID_ANY_ID - 1}
-};
-
-static struct hid_driver egalax_driver = {
- .name = "egalax-touch",
- .id_table = egalax_devices,
- .probe = egalax_probe,
- .remove = egalax_remove,
- .input_mapping = egalax_input_mapping,
- .input_mapped = egalax_input_mapped,
- .usage_table = egalax_grabbed_usages,
- .event = egalax_event,
-};
-
-static int __init egalax_init(void)
-{
- return hid_register_driver(&egalax_driver);
-}
-
-static void __exit egalax_exit(void)
-{
- hid_unregister_driver(&egalax_driver);
-}
-
-module_init(egalax_init);
-module_exit(egalax_exit);
-
generated by cgit v1.2.3-58-ga151 (git 2.39.0) at 2024-12-29 01:53:17 +0000