577 lines
16 KiB
C
577 lines
16 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* HID driver for UC-Logic devices not fully compliant with HID standard
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*
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* Copyright (c) 2010-2014 Nikolai Kondrashov
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* Copyright (c) 2013 Martin Rusko
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*/
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/*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the Free
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* Software Foundation; either version 2 of the License, or (at your option)
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* any later version.
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*/
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#include <linux/device.h>
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#include <linux/hid.h>
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#include <linux/module.h>
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#include <linux/timer.h>
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#include "usbhid/usbhid.h"
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#include "hid-uclogic-params.h"
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#include "hid-ids.h"
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/**
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* uclogic_inrange_timeout - handle pen in-range state timeout.
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* Emulate input events normally generated when pen goes out of range for
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* tablets which don't report that.
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*
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* @t: The timer the timeout handler is attached to, stored in a struct
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* uclogic_drvdata.
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*/
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static void uclogic_inrange_timeout(struct timer_list *t)
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{
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struct uclogic_drvdata *drvdata = from_timer(drvdata, t,
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inrange_timer);
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struct input_dev *input = drvdata->pen_input;
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if (input == NULL)
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return;
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input_report_abs(input, ABS_PRESSURE, 0);
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/* If BTN_TOUCH state is changing */
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if (test_bit(BTN_TOUCH, input->key)) {
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input_event(input, EV_MSC, MSC_SCAN,
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/* Digitizer Tip Switch usage */
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0xd0042);
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input_report_key(input, BTN_TOUCH, 0);
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}
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input_report_key(input, BTN_TOOL_PEN, 0);
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input_sync(input);
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}
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static __u8 *uclogic_report_fixup(struct hid_device *hdev, __u8 *rdesc,
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unsigned int *rsize)
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{
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struct uclogic_drvdata *drvdata = hid_get_drvdata(hdev);
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if (drvdata->desc_ptr != NULL) {
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rdesc = drvdata->desc_ptr;
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*rsize = drvdata->desc_size;
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}
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return rdesc;
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}
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static int uclogic_input_mapping(struct hid_device *hdev,
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struct hid_input *hi,
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struct hid_field *field,
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struct hid_usage *usage,
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unsigned long **bit,
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int *max)
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{
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struct uclogic_drvdata *drvdata = hid_get_drvdata(hdev);
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struct uclogic_params *params = &drvdata->params;
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/* Discard invalid pen usages */
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if (params->pen.usage_invalid && (field->application == HID_DG_PEN))
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return -1;
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/* Let hid-core decide what to do */
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return 0;
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}
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static int uclogic_input_configured(struct hid_device *hdev,
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struct hid_input *hi)
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{
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struct uclogic_drvdata *drvdata = hid_get_drvdata(hdev);
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struct uclogic_params *params = &drvdata->params;
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const char *suffix = NULL;
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struct hid_field *field;
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size_t i;
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const struct uclogic_params_frame *frame;
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/* no report associated (HID_QUIRK_MULTI_INPUT not set) */
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if (!hi->report)
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return 0;
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/*
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* If this is the input corresponding to the pen report
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* in need of tweaking.
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*/
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if (hi->report->id == params->pen.id) {
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/* Remember the input device so we can simulate events */
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drvdata->pen_input = hi->input;
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}
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/* If it's one of the frame devices */
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for (i = 0; i < ARRAY_SIZE(params->frame_list); i++) {
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frame = ¶ms->frame_list[i];
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if (hi->report->id == frame->id) {
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/* Assign custom suffix, if any */
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suffix = frame->suffix;
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/*
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* Disable EV_MSC reports for touch ring interfaces to
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* make the Wacom driver pickup touch ring extents
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*/
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if (frame->touch_byte > 0)
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__clear_bit(EV_MSC, hi->input->evbit);
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}
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}
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if (!suffix) {
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field = hi->report->field[0];
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switch (field->application) {
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case HID_GD_KEYBOARD:
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suffix = "Keyboard";
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break;
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case HID_GD_MOUSE:
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suffix = "Mouse";
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break;
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case HID_GD_KEYPAD:
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suffix = "Pad";
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break;
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case HID_DG_PEN:
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case HID_DG_DIGITIZER:
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suffix = "Pen";
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break;
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case HID_CP_CONSUMER_CONTROL:
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suffix = "Consumer Control";
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break;
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case HID_GD_SYSTEM_CONTROL:
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suffix = "System Control";
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break;
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}
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}
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if (suffix)
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hi->input->name = devm_kasprintf(&hdev->dev, GFP_KERNEL,
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"%s %s", hdev->name, suffix);
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return 0;
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}
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static int uclogic_probe(struct hid_device *hdev,
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const struct hid_device_id *id)
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{
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int rc;
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struct uclogic_drvdata *drvdata = NULL;
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bool params_initialized = false;
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if (!hid_is_usb(hdev))
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return -EINVAL;
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/*
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* libinput requires the pad interface to be on a different node
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* than the pen, so use QUIRK_MULTI_INPUT for all tablets.
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*/
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hdev->quirks |= HID_QUIRK_MULTI_INPUT;
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hdev->quirks |= HID_QUIRK_HIDINPUT_FORCE;
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/* Allocate and assign driver data */
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drvdata = devm_kzalloc(&hdev->dev, sizeof(*drvdata), GFP_KERNEL);
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if (drvdata == NULL) {
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rc = -ENOMEM;
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goto failure;
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}
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timer_setup(&drvdata->inrange_timer, uclogic_inrange_timeout, 0);
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drvdata->re_state = U8_MAX;
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drvdata->quirks = id->driver_data;
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hid_set_drvdata(hdev, drvdata);
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/* Initialize the device and retrieve interface parameters */
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rc = uclogic_params_init(&drvdata->params, hdev);
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if (rc != 0) {
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hid_err(hdev, "failed probing parameters: %d\n", rc);
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goto failure;
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}
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params_initialized = true;
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hid_dbg(hdev, "parameters:\n");
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uclogic_params_hid_dbg(hdev, &drvdata->params);
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if (drvdata->params.invalid) {
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hid_info(hdev, "interface is invalid, ignoring\n");
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rc = -ENODEV;
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goto failure;
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}
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/* Generate replacement report descriptor */
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rc = uclogic_params_get_desc(&drvdata->params,
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&drvdata->desc_ptr,
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&drvdata->desc_size);
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if (rc) {
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hid_err(hdev,
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"failed generating replacement report descriptor: %d\n",
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rc);
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goto failure;
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}
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rc = hid_parse(hdev);
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if (rc) {
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hid_err(hdev, "parse failed\n");
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goto failure;
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}
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rc = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
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if (rc) {
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hid_err(hdev, "hw start failed\n");
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goto failure;
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}
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return 0;
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failure:
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/* Assume "remove" might not be called if "probe" failed */
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if (params_initialized)
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uclogic_params_cleanup(&drvdata->params);
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return rc;
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}
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#ifdef CONFIG_PM
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static int uclogic_resume(struct hid_device *hdev)
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{
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int rc;
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struct uclogic_params params;
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/* Re-initialize the device, but discard parameters */
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rc = uclogic_params_init(¶ms, hdev);
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if (rc != 0)
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hid_err(hdev, "failed to re-initialize the device\n");
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else
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uclogic_params_cleanup(¶ms);
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return rc;
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}
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#endif
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/**
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* uclogic_exec_event_hook - if the received event is hooked schedules the
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* associated work.
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*
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* @p: Tablet interface report parameters.
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* @event: Raw event.
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* @size: The size of event.
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*
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* Returns:
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* Whether the event was hooked or not.
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*/
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static bool uclogic_exec_event_hook(struct uclogic_params *p, u8 *event, int size)
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{
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struct uclogic_raw_event_hook *curr;
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if (!p->event_hooks)
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return false;
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list_for_each_entry(curr, &p->event_hooks->list, list) {
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if (curr->size == size && memcmp(curr->event, event, size) == 0) {
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schedule_work(&curr->work);
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return true;
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}
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}
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return false;
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}
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/**
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* uclogic_raw_event_pen - handle raw pen events (pen HID reports).
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*
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* @drvdata: Driver data.
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* @data: Report data buffer, can be modified.
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* @size: Report data size, bytes.
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*
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* Returns:
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* Negative value on error (stops event delivery), zero for success.
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*/
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static int uclogic_raw_event_pen(struct uclogic_drvdata *drvdata,
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u8 *data, int size)
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{
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struct uclogic_params_pen *pen = &drvdata->params.pen;
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WARN_ON(drvdata == NULL);
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WARN_ON(data == NULL && size != 0);
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/* If in-range reports are inverted */
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if (pen->inrange ==
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UCLOGIC_PARAMS_PEN_INRANGE_INVERTED) {
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/* Invert the in-range bit */
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data[1] ^= 0x40;
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}
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/*
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* If report contains fragmented high-resolution pen
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* coordinates
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*/
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if (size >= 10 && pen->fragmented_hires) {
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u8 pressure_low_byte;
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u8 pressure_high_byte;
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/* Lift pressure bytes */
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pressure_low_byte = data[6];
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pressure_high_byte = data[7];
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/*
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* Move Y coord to make space for high-order X
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* coord byte
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*/
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data[6] = data[5];
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data[5] = data[4];
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/* Move high-order X coord byte */
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data[4] = data[8];
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/* Move high-order Y coord byte */
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data[7] = data[9];
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/* Place pressure bytes */
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data[8] = pressure_low_byte;
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data[9] = pressure_high_byte;
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}
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/* If we need to emulate in-range detection */
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if (pen->inrange == UCLOGIC_PARAMS_PEN_INRANGE_NONE) {
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/* Set in-range bit */
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data[1] |= 0x40;
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/* (Re-)start in-range timeout */
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mod_timer(&drvdata->inrange_timer,
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jiffies + msecs_to_jiffies(100));
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}
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/* If we report tilt and Y direction is flipped */
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if (size >= 12 && pen->tilt_y_flipped)
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data[11] = -data[11];
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return 0;
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}
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/**
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* uclogic_raw_event_frame - handle raw frame events (frame HID reports).
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*
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* @drvdata: Driver data.
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* @frame: The parameters of the frame controls to handle.
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* @data: Report data buffer, can be modified.
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* @size: Report data size, bytes.
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*
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* Returns:
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* Negative value on error (stops event delivery), zero for success.
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*/
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static int uclogic_raw_event_frame(
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struct uclogic_drvdata *drvdata,
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const struct uclogic_params_frame *frame,
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u8 *data, int size)
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{
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WARN_ON(drvdata == NULL);
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WARN_ON(data == NULL && size != 0);
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/* If need to, and can, set pad device ID for Wacom drivers */
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if (frame->dev_id_byte > 0 && frame->dev_id_byte < size) {
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/* If we also have a touch ring and the finger left it */
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if (frame->touch_byte > 0 && frame->touch_byte < size &&
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data[frame->touch_byte] == 0) {
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data[frame->dev_id_byte] = 0;
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} else {
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data[frame->dev_id_byte] = 0xf;
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}
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}
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/* If need to, and can, read rotary encoder state change */
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if (frame->re_lsb > 0 && frame->re_lsb / 8 < size) {
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unsigned int byte = frame->re_lsb / 8;
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unsigned int bit = frame->re_lsb % 8;
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u8 change;
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u8 prev_state = drvdata->re_state;
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/* Read Gray-coded state */
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u8 state = (data[byte] >> bit) & 0x3;
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/* Encode state change into 2-bit signed integer */
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if ((prev_state == 1 && state == 0) ||
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(prev_state == 2 && state == 3)) {
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change = 1;
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} else if ((prev_state == 2 && state == 0) ||
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(prev_state == 1 && state == 3)) {
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change = 3;
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} else {
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change = 0;
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}
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/* Write change */
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data[byte] = (data[byte] & ~((u8)3 << bit)) |
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(change << bit);
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/* Remember state */
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drvdata->re_state = state;
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}
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/* If need to, and can, transform the touch ring reports */
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if (frame->touch_byte > 0 && frame->touch_byte < size) {
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__s8 value = data[frame->touch_byte];
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if (value != 0) {
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if (frame->touch_flip_at != 0) {
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value = frame->touch_flip_at - value;
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if (value <= 0)
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value = frame->touch_max + value;
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}
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data[frame->touch_byte] = value - 1;
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}
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}
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/* If need to, and can, transform the bitmap dial reports */
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if (frame->bitmap_dial_byte > 0 && frame->bitmap_dial_byte < size) {
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if (data[frame->bitmap_dial_byte] == 2)
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data[frame->bitmap_dial_byte] = -1;
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}
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return 0;
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}
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static int uclogic_raw_event(struct hid_device *hdev,
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struct hid_report *report,
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u8 *data, int size)
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{
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unsigned int report_id = report->id;
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struct uclogic_drvdata *drvdata = hid_get_drvdata(hdev);
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struct uclogic_params *params = &drvdata->params;
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struct uclogic_params_pen_subreport *subreport;
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struct uclogic_params_pen_subreport *subreport_list_end;
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size_t i;
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/* Do not handle anything but input reports */
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if (report->type != HID_INPUT_REPORT)
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return 0;
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if (uclogic_exec_event_hook(params, data, size))
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return 0;
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while (true) {
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/* Tweak pen reports, if necessary */
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if ((report_id == params->pen.id) && (size >= 2)) {
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subreport_list_end =
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params->pen.subreport_list +
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ARRAY_SIZE(params->pen.subreport_list);
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/* Try to match a subreport */
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for (subreport = params->pen.subreport_list;
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subreport < subreport_list_end; subreport++) {
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if (subreport->value != 0 &&
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subreport->value == data[1]) {
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break;
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}
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}
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/* If a subreport matched */
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if (subreport < subreport_list_end) {
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/* Change to subreport ID, and restart */
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report_id = data[0] = subreport->id;
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continue;
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} else {
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return uclogic_raw_event_pen(drvdata, data, size);
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}
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}
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/* Tweak frame control reports, if necessary */
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for (i = 0; i < ARRAY_SIZE(params->frame_list); i++) {
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if (report_id == params->frame_list[i].id) {
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return uclogic_raw_event_frame(
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drvdata, ¶ms->frame_list[i],
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data, size);
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}
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}
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break;
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}
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return 0;
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}
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static void uclogic_remove(struct hid_device *hdev)
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{
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struct uclogic_drvdata *drvdata = hid_get_drvdata(hdev);
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del_timer_sync(&drvdata->inrange_timer);
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hid_hw_stop(hdev);
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kfree(drvdata->desc_ptr);
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uclogic_params_cleanup(&drvdata->params);
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}
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static const struct hid_device_id uclogic_devices[] = {
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{ HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC,
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USB_DEVICE_ID_UCLOGIC_TABLET_PF1209) },
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{ HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC,
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USB_DEVICE_ID_UCLOGIC_TABLET_WP4030U) },
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{ HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC,
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USB_DEVICE_ID_UCLOGIC_TABLET_WP5540U) },
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{ HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC,
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USB_DEVICE_ID_UCLOGIC_TABLET_WP8060U) },
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{ HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC,
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USB_DEVICE_ID_UCLOGIC_TABLET_WP1062) },
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{ HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC,
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USB_DEVICE_ID_UCLOGIC_WIRELESS_TABLET_TWHL850) },
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{ HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC,
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USB_DEVICE_ID_UCLOGIC_TABLET_TWHA60) },
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{ HID_USB_DEVICE(USB_VENDOR_ID_HUION,
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USB_DEVICE_ID_HUION_TABLET) },
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{ HID_USB_DEVICE(USB_VENDOR_ID_HUION,
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USB_DEVICE_ID_HUION_TABLET2) },
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{ HID_USB_DEVICE(USB_VENDOR_ID_TRUST,
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USB_DEVICE_ID_TRUST_PANORA_TABLET) },
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{ HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC,
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USB_DEVICE_ID_HUION_TABLET) },
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{ HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC,
|
|
USB_DEVICE_ID_YIYNOVA_TABLET) },
|
|
{ HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC,
|
|
USB_DEVICE_ID_UCLOGIC_UGEE_TABLET_81) },
|
|
{ HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC,
|
|
USB_DEVICE_ID_UCLOGIC_UGEE_TABLET_45) },
|
|
{ HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC,
|
|
USB_DEVICE_ID_UCLOGIC_UGEE_TABLET_47) },
|
|
{ HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC,
|
|
USB_DEVICE_ID_UCLOGIC_DRAWIMAGE_G3) },
|
|
{ HID_USB_DEVICE(USB_VENDOR_ID_UGTIZER,
|
|
USB_DEVICE_ID_UGTIZER_TABLET_GP0610) },
|
|
{ HID_USB_DEVICE(USB_VENDOR_ID_UGTIZER,
|
|
USB_DEVICE_ID_UGTIZER_TABLET_GT5040) },
|
|
{ HID_USB_DEVICE(USB_VENDOR_ID_UGEE,
|
|
USB_DEVICE_ID_UGEE_PARBLO_A610_PRO) },
|
|
{ HID_USB_DEVICE(USB_VENDOR_ID_UGEE,
|
|
USB_DEVICE_ID_UGEE_TABLET_G5) },
|
|
{ HID_USB_DEVICE(USB_VENDOR_ID_UGEE,
|
|
USB_DEVICE_ID_UGEE_TABLET_EX07S) },
|
|
{ HID_USB_DEVICE(USB_VENDOR_ID_UGEE,
|
|
USB_DEVICE_ID_UGEE_TABLET_RAINBOW_CV720) },
|
|
{ HID_USB_DEVICE(USB_VENDOR_ID_UGEE,
|
|
USB_DEVICE_ID_UGEE_XPPEN_TABLET_G540) },
|
|
{ HID_USB_DEVICE(USB_VENDOR_ID_UGEE,
|
|
USB_DEVICE_ID_UGEE_XPPEN_TABLET_G640) },
|
|
{ HID_USB_DEVICE(USB_VENDOR_ID_UGEE,
|
|
USB_DEVICE_ID_UGEE_XPPEN_TABLET_DECO01) },
|
|
{ HID_USB_DEVICE(USB_VENDOR_ID_UGEE,
|
|
USB_DEVICE_ID_UGEE_XPPEN_TABLET_DECO01_V2) },
|
|
{ HID_USB_DEVICE(USB_VENDOR_ID_UGEE,
|
|
USB_DEVICE_ID_UGEE_XPPEN_TABLET_DECO_L) },
|
|
{ HID_USB_DEVICE(USB_VENDOR_ID_UGEE,
|
|
USB_DEVICE_ID_UGEE_XPPEN_TABLET_DECO_PRO_MW),
|
|
.driver_data = UCLOGIC_MOUSE_FRAME_QUIRK | UCLOGIC_BATTERY_QUIRK },
|
|
{ HID_USB_DEVICE(USB_VENDOR_ID_UGEE,
|
|
USB_DEVICE_ID_UGEE_XPPEN_TABLET_DECO_PRO_S) },
|
|
{ HID_USB_DEVICE(USB_VENDOR_ID_UGEE,
|
|
USB_DEVICE_ID_UGEE_XPPEN_TABLET_DECO_PRO_SW),
|
|
.driver_data = UCLOGIC_MOUSE_FRAME_QUIRK | UCLOGIC_BATTERY_QUIRK },
|
|
{ HID_USB_DEVICE(USB_VENDOR_ID_UGEE,
|
|
USB_DEVICE_ID_UGEE_XPPEN_TABLET_STAR06) },
|
|
{ }
|
|
};
|
|
MODULE_DEVICE_TABLE(hid, uclogic_devices);
|
|
|
|
static struct hid_driver uclogic_driver = {
|
|
.name = "uclogic",
|
|
.id_table = uclogic_devices,
|
|
.probe = uclogic_probe,
|
|
.remove = uclogic_remove,
|
|
.report_fixup = uclogic_report_fixup,
|
|
.raw_event = uclogic_raw_event,
|
|
.input_mapping = uclogic_input_mapping,
|
|
.input_configured = uclogic_input_configured,
|
|
#ifdef CONFIG_PM
|
|
.resume = uclogic_resume,
|
|
.reset_resume = uclogic_resume,
|
|
#endif
|
|
};
|
|
module_hid_driver(uclogic_driver);
|
|
|
|
MODULE_AUTHOR("Martin Rusko");
|
|
MODULE_AUTHOR("Nikolai Kondrashov");
|
|
MODULE_DESCRIPTION("HID driver for UC-Logic devices not fully compliant with HID standard");
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_DESCRIPTION("HID driver for UC-Logic devices not fully compliant with HID standard");
|
|
|
|
#ifdef CONFIG_HID_KUNIT_TEST
|
|
#include "hid-uclogic-core-test.c"
|
|
#endif
|