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![Denis Arefev](/assets/img/avatar_default.png)
Added a variable check and transition in case of an error Found by Linux Verification Center (linuxtesting.org) with SVACE. Signed-off-by: Denis Arefev <arefev@swemel.ru> Reviewed-by: Ping Cheng <ping.cheng@wacom.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2879 lines
73 KiB
C
2879 lines
73 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* USB Wacom tablet support - system specific code
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*/
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#include "wacom_wac.h"
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#include "wacom.h"
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#include <linux/input/mt.h>
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#define WAC_MSG_RETRIES 5
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#define WAC_CMD_RETRIES 10
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#define DEV_ATTR_RW_PERM (S_IRUGO | S_IWUSR | S_IWGRP)
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#define DEV_ATTR_WO_PERM (S_IWUSR | S_IWGRP)
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#define DEV_ATTR_RO_PERM (S_IRUSR | S_IRGRP)
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static int wacom_get_report(struct hid_device *hdev, u8 type, u8 *buf,
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size_t size, unsigned int retries)
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{
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int retval;
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do {
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retval = hid_hw_raw_request(hdev, buf[0], buf, size, type,
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HID_REQ_GET_REPORT);
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} while ((retval == -ETIMEDOUT || retval == -EAGAIN) && --retries);
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if (retval < 0)
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hid_err(hdev, "wacom_get_report: ran out of retries "
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"(last error = %d)\n", retval);
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return retval;
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}
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static int wacom_set_report(struct hid_device *hdev, u8 type, u8 *buf,
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size_t size, unsigned int retries)
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{
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int retval;
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do {
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retval = hid_hw_raw_request(hdev, buf[0], buf, size, type,
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HID_REQ_SET_REPORT);
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} while ((retval == -ETIMEDOUT || retval == -EAGAIN) && --retries);
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if (retval < 0)
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hid_err(hdev, "wacom_set_report: ran out of retries "
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"(last error = %d)\n", retval);
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return retval;
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}
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static void wacom_wac_queue_insert(struct hid_device *hdev,
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struct kfifo_rec_ptr_2 *fifo,
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u8 *raw_data, int size)
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{
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bool warned = false;
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while (kfifo_avail(fifo) < size) {
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if (!warned)
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hid_warn(hdev, "%s: kfifo has filled, starting to drop events\n", __func__);
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warned = true;
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kfifo_skip(fifo);
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}
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kfifo_in(fifo, raw_data, size);
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}
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static void wacom_wac_queue_flush(struct hid_device *hdev,
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struct kfifo_rec_ptr_2 *fifo)
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{
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while (!kfifo_is_empty(fifo)) {
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u8 buf[WACOM_PKGLEN_MAX];
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int size;
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int err;
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size = kfifo_out(fifo, buf, sizeof(buf));
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err = hid_report_raw_event(hdev, HID_INPUT_REPORT, buf, size, false);
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if (err) {
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hid_warn(hdev, "%s: unable to flush event due to error %d\n",
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__func__, err);
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}
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}
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}
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static int wacom_wac_pen_serial_enforce(struct hid_device *hdev,
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struct hid_report *report, u8 *raw_data, int report_size)
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{
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struct wacom *wacom = hid_get_drvdata(hdev);
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struct wacom_wac *wacom_wac = &wacom->wacom_wac;
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struct wacom_features *features = &wacom_wac->features;
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bool flush = false;
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bool insert = false;
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int i, j;
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if (wacom_wac->serial[0] || !(features->quirks & WACOM_QUIRK_TOOLSERIAL))
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return 0;
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/* Queue events which have invalid tool type or serial number */
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for (i = 0; i < report->maxfield; i++) {
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for (j = 0; j < report->field[i]->maxusage; j++) {
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struct hid_field *field = report->field[i];
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struct hid_usage *usage = &field->usage[j];
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unsigned int equivalent_usage = wacom_equivalent_usage(usage->hid);
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unsigned int offset;
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unsigned int size;
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unsigned int value;
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if (equivalent_usage != HID_DG_INRANGE &&
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equivalent_usage != HID_DG_TOOLSERIALNUMBER &&
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equivalent_usage != WACOM_HID_WD_SERIALHI &&
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equivalent_usage != WACOM_HID_WD_TOOLTYPE)
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continue;
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offset = field->report_offset;
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size = field->report_size;
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value = hid_field_extract(hdev, raw_data+1, offset + j * size, size);
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/* If we go out of range, we need to flush the queue ASAP */
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if (equivalent_usage == HID_DG_INRANGE)
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value = !value;
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if (value) {
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flush = true;
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switch (equivalent_usage) {
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case HID_DG_TOOLSERIALNUMBER:
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wacom_wac->serial[0] = value;
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break;
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case WACOM_HID_WD_SERIALHI:
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wacom_wac->serial[0] |= ((__u64)value) << 32;
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break;
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case WACOM_HID_WD_TOOLTYPE:
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wacom_wac->id[0] = value;
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break;
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}
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}
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else {
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insert = true;
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}
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}
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}
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if (flush)
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wacom_wac_queue_flush(hdev, wacom_wac->pen_fifo);
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else if (insert)
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wacom_wac_queue_insert(hdev, wacom_wac->pen_fifo,
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raw_data, report_size);
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return insert && !flush;
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}
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static int wacom_raw_event(struct hid_device *hdev, struct hid_report *report,
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u8 *raw_data, int size)
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{
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struct wacom *wacom = hid_get_drvdata(hdev);
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if (wacom->wacom_wac.features.type == BOOTLOADER)
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return 0;
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if (size > WACOM_PKGLEN_MAX)
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return 1;
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if (wacom_wac_pen_serial_enforce(hdev, report, raw_data, size))
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return -1;
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memcpy(wacom->wacom_wac.data, raw_data, size);
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wacom_wac_irq(&wacom->wacom_wac, size);
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return 0;
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}
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static int wacom_open(struct input_dev *dev)
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{
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struct wacom *wacom = input_get_drvdata(dev);
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return hid_hw_open(wacom->hdev);
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}
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static void wacom_close(struct input_dev *dev)
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{
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struct wacom *wacom = input_get_drvdata(dev);
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/*
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* wacom->hdev should never be null, but surprisingly, I had the case
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* once while unplugging the Wacom Wireless Receiver.
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*/
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if (wacom->hdev)
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hid_hw_close(wacom->hdev);
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}
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/*
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* Calculate the resolution of the X or Y axis using hidinput_calc_abs_res.
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*/
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static int wacom_calc_hid_res(int logical_extents, int physical_extents,
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unsigned unit, int exponent)
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{
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struct hid_field field = {
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.logical_maximum = logical_extents,
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.physical_maximum = physical_extents,
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.unit = unit,
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.unit_exponent = exponent,
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};
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return hidinput_calc_abs_res(&field, ABS_X);
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}
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static void wacom_hid_usage_quirk(struct hid_device *hdev,
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struct hid_field *field, struct hid_usage *usage)
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{
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struct wacom *wacom = hid_get_drvdata(hdev);
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struct wacom_features *features = &wacom->wacom_wac.features;
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unsigned int equivalent_usage = wacom_equivalent_usage(usage->hid);
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/*
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* The Dell Canvas 27 needs to be switched to its vendor-defined
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* report to provide the best resolution.
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*/
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if (hdev->vendor == USB_VENDOR_ID_WACOM &&
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hdev->product == 0x4200 &&
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field->application == HID_UP_MSVENDOR) {
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wacom->wacom_wac.mode_report = field->report->id;
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wacom->wacom_wac.mode_value = 2;
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}
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/*
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* ISDv4 devices which predate HID's adoption of the
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* HID_DG_BARELSWITCH2 usage use 0x000D0000 in its
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* position instead. We can accurately detect if a
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* usage with that value should be HID_DG_BARRELSWITCH2
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* based on the surrounding usages, which have remained
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* constant across generations.
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*/
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if (features->type == HID_GENERIC &&
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usage->hid == 0x000D0000 &&
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field->application == HID_DG_PEN &&
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field->physical == HID_DG_STYLUS) {
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int i = usage->usage_index;
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if (i-4 >= 0 && i+1 < field->maxusage &&
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field->usage[i-4].hid == HID_DG_TIPSWITCH &&
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field->usage[i-3].hid == HID_DG_BARRELSWITCH &&
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field->usage[i-2].hid == HID_DG_ERASER &&
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field->usage[i-1].hid == HID_DG_INVERT &&
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field->usage[i+1].hid == HID_DG_INRANGE) {
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usage->hid = HID_DG_BARRELSWITCH2;
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}
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}
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/*
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* Wacom's AES devices use different vendor-defined usages to
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* report serial number information compared to their branded
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* hardware. The usages are also sometimes ill-defined and do
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* not have the correct logical min/max values set. Lets patch
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* the descriptor to use the branded usage convention and fix
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* the errors.
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*/
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if (usage->hid == WACOM_HID_WT_SERIALNUMBER &&
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field->report_size == 16 &&
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field->index + 2 < field->report->maxfield) {
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struct hid_field *a = field->report->field[field->index + 1];
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struct hid_field *b = field->report->field[field->index + 2];
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if (a->maxusage > 0 &&
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a->usage[0].hid == HID_DG_TOOLSERIALNUMBER &&
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a->report_size == 32 &&
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b->maxusage > 0 &&
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b->usage[0].hid == 0xFF000000 &&
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b->report_size == 8) {
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features->quirks |= WACOM_QUIRK_AESPEN;
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usage->hid = WACOM_HID_WD_TOOLTYPE;
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field->logical_minimum = S16_MIN;
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field->logical_maximum = S16_MAX;
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a->logical_minimum = S32_MIN;
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a->logical_maximum = S32_MAX;
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b->usage[0].hid = WACOM_HID_WD_SERIALHI;
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b->logical_minimum = 0;
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b->logical_maximum = U8_MAX;
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}
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}
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/* 2nd-generation Intuos Pro Large has incorrect Y maximum */
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if (hdev->vendor == USB_VENDOR_ID_WACOM &&
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hdev->product == 0x0358 &&
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WACOM_PEN_FIELD(field) &&
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equivalent_usage == HID_GD_Y) {
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field->logical_maximum = 43200;
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}
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}
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static void wacom_feature_mapping(struct hid_device *hdev,
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struct hid_field *field, struct hid_usage *usage)
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{
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struct wacom *wacom = hid_get_drvdata(hdev);
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struct wacom_features *features = &wacom->wacom_wac.features;
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struct hid_data *hid_data = &wacom->wacom_wac.hid_data;
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unsigned int equivalent_usage = wacom_equivalent_usage(usage->hid);
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u8 *data;
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int ret;
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u32 n;
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wacom_hid_usage_quirk(hdev, field, usage);
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switch (equivalent_usage) {
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case WACOM_HID_WD_TOUCH_RING_SETTING:
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wacom->generic_has_leds = true;
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break;
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case HID_DG_CONTACTMAX:
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/* leave touch_max as is if predefined */
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if (!features->touch_max) {
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/* read manually */
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n = hid_report_len(field->report);
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data = hid_alloc_report_buf(field->report, GFP_KERNEL);
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if (!data)
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break;
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data[0] = field->report->id;
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ret = wacom_get_report(hdev, HID_FEATURE_REPORT,
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data, n, WAC_CMD_RETRIES);
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if (ret == n && features->type == HID_GENERIC) {
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ret = hid_report_raw_event(hdev,
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HID_FEATURE_REPORT, data, n, 0);
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} else if (ret == 2 && features->type != HID_GENERIC) {
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features->touch_max = data[1];
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} else {
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features->touch_max = 16;
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hid_warn(hdev, "wacom_feature_mapping: "
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"could not get HID_DG_CONTACTMAX, "
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"defaulting to %d\n",
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features->touch_max);
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}
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kfree(data);
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}
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break;
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case HID_DG_INPUTMODE:
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/* Ignore if value index is out of bounds. */
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if (usage->usage_index >= field->report_count) {
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dev_err(&hdev->dev, "HID_DG_INPUTMODE out of range\n");
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break;
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}
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hid_data->inputmode = field->report->id;
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hid_data->inputmode_index = usage->usage_index;
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break;
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case HID_UP_DIGITIZER:
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if (field->report->id == 0x0B &&
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(field->application == WACOM_HID_G9_PEN ||
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field->application == WACOM_HID_G11_PEN)) {
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wacom->wacom_wac.mode_report = field->report->id;
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wacom->wacom_wac.mode_value = 0;
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}
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break;
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case WACOM_HID_WD_DATAMODE:
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wacom->wacom_wac.mode_report = field->report->id;
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wacom->wacom_wac.mode_value = 2;
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break;
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case WACOM_HID_UP_G9:
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case WACOM_HID_UP_G11:
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if (field->report->id == 0x03 &&
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(field->application == WACOM_HID_G9_TOUCHSCREEN ||
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field->application == WACOM_HID_G11_TOUCHSCREEN)) {
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wacom->wacom_wac.mode_report = field->report->id;
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wacom->wacom_wac.mode_value = 0;
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}
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break;
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case WACOM_HID_WD_OFFSETLEFT:
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case WACOM_HID_WD_OFFSETTOP:
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case WACOM_HID_WD_OFFSETRIGHT:
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case WACOM_HID_WD_OFFSETBOTTOM:
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/* read manually */
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n = hid_report_len(field->report);
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data = hid_alloc_report_buf(field->report, GFP_KERNEL);
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if (!data)
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break;
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data[0] = field->report->id;
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ret = wacom_get_report(hdev, HID_FEATURE_REPORT,
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data, n, WAC_CMD_RETRIES);
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if (ret == n) {
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ret = hid_report_raw_event(hdev, HID_FEATURE_REPORT,
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data, n, 0);
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} else {
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hid_warn(hdev, "%s: could not retrieve sensor offsets\n",
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__func__);
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}
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kfree(data);
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break;
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}
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}
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/*
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* Interface Descriptor of wacom devices can be incomplete and
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* inconsistent so wacom_features table is used to store stylus
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* device's packet lengths, various maximum values, and tablet
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* resolution based on product ID's.
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*
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* For devices that contain 2 interfaces, wacom_features table is
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* inaccurate for the touch interface. Since the Interface Descriptor
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* for touch interfaces has pretty complete data, this function exists
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* to query tablet for this missing information instead of hard coding in
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* an additional table.
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*
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* A typical Interface Descriptor for a stylus will contain a
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* boot mouse application collection that is not of interest and this
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* function will ignore it.
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*
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* It also contains a digitizer application collection that also is not
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* of interest since any information it contains would be duplicate
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* of what is in wacom_features. Usually it defines a report of an array
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* of bytes that could be used as max length of the stylus packet returned.
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* If it happens to define a Digitizer-Stylus Physical Collection then
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* the X and Y logical values contain valid data but it is ignored.
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*
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* A typical Interface Descriptor for a touch interface will contain a
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* Digitizer-Finger Physical Collection which will define both logical
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* X/Y maximum as well as the physical size of tablet. Since touch
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* interfaces haven't supported pressure or distance, this is enough
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* information to override invalid values in the wacom_features table.
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*
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* Intuos5 touch interface and 3rd gen Bamboo Touch do not contain useful
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* data. We deal with them after returning from this function.
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*/
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static void wacom_usage_mapping(struct hid_device *hdev,
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struct hid_field *field, struct hid_usage *usage)
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{
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struct wacom *wacom = hid_get_drvdata(hdev);
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struct wacom_features *features = &wacom->wacom_wac.features;
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bool finger = WACOM_FINGER_FIELD(field);
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bool pen = WACOM_PEN_FIELD(field);
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unsigned equivalent_usage = wacom_equivalent_usage(usage->hid);
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/*
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* Requiring Stylus Usage will ignore boot mouse
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* X/Y values and some cases of invalid Digitizer X/Y
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* values commonly reported.
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*/
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if (pen)
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features->device_type |= WACOM_DEVICETYPE_PEN;
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else if (finger)
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features->device_type |= WACOM_DEVICETYPE_TOUCH;
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else
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return;
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wacom_hid_usage_quirk(hdev, field, usage);
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switch (equivalent_usage) {
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case HID_GD_X:
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features->x_max = field->logical_maximum;
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if (finger) {
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features->x_phy = field->physical_maximum;
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if ((features->type != BAMBOO_PT) &&
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(features->type != BAMBOO_TOUCH)) {
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features->unit = field->unit;
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features->unitExpo = field->unit_exponent;
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}
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}
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break;
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case HID_GD_Y:
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features->y_max = field->logical_maximum;
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if (finger) {
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features->y_phy = field->physical_maximum;
|
|
if ((features->type != BAMBOO_PT) &&
|
|
(features->type != BAMBOO_TOUCH)) {
|
|
features->unit = field->unit;
|
|
features->unitExpo = field->unit_exponent;
|
|
}
|
|
}
|
|
break;
|
|
case HID_DG_TIPPRESSURE:
|
|
if (pen)
|
|
features->pressure_max = field->logical_maximum;
|
|
break;
|
|
}
|
|
|
|
if (features->type == HID_GENERIC)
|
|
wacom_wac_usage_mapping(hdev, field, usage);
|
|
}
|
|
|
|
static void wacom_post_parse_hid(struct hid_device *hdev,
|
|
struct wacom_features *features)
|
|
{
|
|
struct wacom *wacom = hid_get_drvdata(hdev);
|
|
struct wacom_wac *wacom_wac = &wacom->wacom_wac;
|
|
|
|
if (features->type == HID_GENERIC) {
|
|
/* Any last-minute generic device setup */
|
|
if (wacom_wac->has_mode_change) {
|
|
if (wacom_wac->is_direct_mode)
|
|
features->device_type |= WACOM_DEVICETYPE_DIRECT;
|
|
else
|
|
features->device_type &= ~WACOM_DEVICETYPE_DIRECT;
|
|
}
|
|
|
|
if (features->touch_max > 1) {
|
|
if (features->device_type & WACOM_DEVICETYPE_DIRECT)
|
|
input_mt_init_slots(wacom_wac->touch_input,
|
|
wacom_wac->features.touch_max,
|
|
INPUT_MT_DIRECT);
|
|
else
|
|
input_mt_init_slots(wacom_wac->touch_input,
|
|
wacom_wac->features.touch_max,
|
|
INPUT_MT_POINTER);
|
|
}
|
|
}
|
|
}
|
|
|
|
static void wacom_parse_hid(struct hid_device *hdev,
|
|
struct wacom_features *features)
|
|
{
|
|
struct hid_report_enum *rep_enum;
|
|
struct hid_report *hreport;
|
|
int i, j;
|
|
|
|
/* check features first */
|
|
rep_enum = &hdev->report_enum[HID_FEATURE_REPORT];
|
|
list_for_each_entry(hreport, &rep_enum->report_list, list) {
|
|
for (i = 0; i < hreport->maxfield; i++) {
|
|
/* Ignore if report count is out of bounds. */
|
|
if (hreport->field[i]->report_count < 1)
|
|
continue;
|
|
|
|
for (j = 0; j < hreport->field[i]->maxusage; j++) {
|
|
wacom_feature_mapping(hdev, hreport->field[i],
|
|
hreport->field[i]->usage + j);
|
|
}
|
|
}
|
|
}
|
|
|
|
/* now check the input usages */
|
|
rep_enum = &hdev->report_enum[HID_INPUT_REPORT];
|
|
list_for_each_entry(hreport, &rep_enum->report_list, list) {
|
|
|
|
if (!hreport->maxfield)
|
|
continue;
|
|
|
|
for (i = 0; i < hreport->maxfield; i++)
|
|
for (j = 0; j < hreport->field[i]->maxusage; j++)
|
|
wacom_usage_mapping(hdev, hreport->field[i],
|
|
hreport->field[i]->usage + j);
|
|
}
|
|
|
|
wacom_post_parse_hid(hdev, features);
|
|
}
|
|
|
|
static int wacom_hid_set_device_mode(struct hid_device *hdev)
|
|
{
|
|
struct wacom *wacom = hid_get_drvdata(hdev);
|
|
struct hid_data *hid_data = &wacom->wacom_wac.hid_data;
|
|
struct hid_report *r;
|
|
struct hid_report_enum *re;
|
|
|
|
if (hid_data->inputmode < 0)
|
|
return 0;
|
|
|
|
re = &(hdev->report_enum[HID_FEATURE_REPORT]);
|
|
r = re->report_id_hash[hid_data->inputmode];
|
|
if (r) {
|
|
r->field[0]->value[hid_data->inputmode_index] = 2;
|
|
hid_hw_request(hdev, r, HID_REQ_SET_REPORT);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int wacom_set_device_mode(struct hid_device *hdev,
|
|
struct wacom_wac *wacom_wac)
|
|
{
|
|
u8 *rep_data;
|
|
struct hid_report *r;
|
|
struct hid_report_enum *re;
|
|
u32 length;
|
|
int error = -ENOMEM, limit = 0;
|
|
|
|
if (wacom_wac->mode_report < 0)
|
|
return 0;
|
|
|
|
re = &(hdev->report_enum[HID_FEATURE_REPORT]);
|
|
r = re->report_id_hash[wacom_wac->mode_report];
|
|
if (!r)
|
|
return -EINVAL;
|
|
|
|
rep_data = hid_alloc_report_buf(r, GFP_KERNEL);
|
|
if (!rep_data)
|
|
return -ENOMEM;
|
|
|
|
length = hid_report_len(r);
|
|
|
|
do {
|
|
rep_data[0] = wacom_wac->mode_report;
|
|
rep_data[1] = wacom_wac->mode_value;
|
|
|
|
error = wacom_set_report(hdev, HID_FEATURE_REPORT, rep_data,
|
|
length, 1);
|
|
if (error >= 0)
|
|
error = wacom_get_report(hdev, HID_FEATURE_REPORT,
|
|
rep_data, length, 1);
|
|
} while (error >= 0 &&
|
|
rep_data[1] != wacom_wac->mode_report &&
|
|
limit++ < WAC_MSG_RETRIES);
|
|
|
|
kfree(rep_data);
|
|
|
|
return error < 0 ? error : 0;
|
|
}
|
|
|
|
static int wacom_bt_query_tablet_data(struct hid_device *hdev, u8 speed,
|
|
struct wacom_features *features)
|
|
{
|
|
struct wacom *wacom = hid_get_drvdata(hdev);
|
|
int ret;
|
|
u8 rep_data[2];
|
|
|
|
switch (features->type) {
|
|
case GRAPHIRE_BT:
|
|
rep_data[0] = 0x03;
|
|
rep_data[1] = 0x00;
|
|
ret = wacom_set_report(hdev, HID_FEATURE_REPORT, rep_data, 2,
|
|
3);
|
|
|
|
if (ret >= 0) {
|
|
rep_data[0] = speed == 0 ? 0x05 : 0x06;
|
|
rep_data[1] = 0x00;
|
|
|
|
ret = wacom_set_report(hdev, HID_FEATURE_REPORT,
|
|
rep_data, 2, 3);
|
|
|
|
if (ret >= 0) {
|
|
wacom->wacom_wac.bt_high_speed = speed;
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Note that if the raw queries fail, it's not a hard failure
|
|
* and it is safe to continue
|
|
*/
|
|
hid_warn(hdev, "failed to poke device, command %d, err %d\n",
|
|
rep_data[0], ret);
|
|
break;
|
|
case INTUOS4WL:
|
|
if (speed == 1)
|
|
wacom->wacom_wac.bt_features &= ~0x20;
|
|
else
|
|
wacom->wacom_wac.bt_features |= 0x20;
|
|
|
|
rep_data[0] = 0x03;
|
|
rep_data[1] = wacom->wacom_wac.bt_features;
|
|
|
|
ret = wacom_set_report(hdev, HID_FEATURE_REPORT, rep_data, 2,
|
|
1);
|
|
if (ret >= 0)
|
|
wacom->wacom_wac.bt_high_speed = speed;
|
|
break;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Switch the tablet into its most-capable mode. Wacom tablets are
|
|
* typically configured to power-up in a mode which sends mouse-like
|
|
* reports to the OS. To get absolute position, pressure data, etc.
|
|
* from the tablet, it is necessary to switch the tablet out of this
|
|
* mode and into one which sends the full range of tablet data.
|
|
*/
|
|
static int _wacom_query_tablet_data(struct wacom *wacom)
|
|
{
|
|
struct hid_device *hdev = wacom->hdev;
|
|
struct wacom_wac *wacom_wac = &wacom->wacom_wac;
|
|
struct wacom_features *features = &wacom_wac->features;
|
|
|
|
if (hdev->bus == BUS_BLUETOOTH)
|
|
return wacom_bt_query_tablet_data(hdev, 1, features);
|
|
|
|
if (features->type != HID_GENERIC) {
|
|
if (features->device_type & WACOM_DEVICETYPE_TOUCH) {
|
|
if (features->type > TABLETPC) {
|
|
/* MT Tablet PC touch */
|
|
wacom_wac->mode_report = 3;
|
|
wacom_wac->mode_value = 4;
|
|
} else if (features->type == WACOM_24HDT) {
|
|
wacom_wac->mode_report = 18;
|
|
wacom_wac->mode_value = 2;
|
|
} else if (features->type == WACOM_27QHDT) {
|
|
wacom_wac->mode_report = 131;
|
|
wacom_wac->mode_value = 2;
|
|
} else if (features->type == BAMBOO_PAD) {
|
|
wacom_wac->mode_report = 2;
|
|
wacom_wac->mode_value = 2;
|
|
}
|
|
} else if (features->device_type & WACOM_DEVICETYPE_PEN) {
|
|
if (features->type <= BAMBOO_PT) {
|
|
wacom_wac->mode_report = 2;
|
|
wacom_wac->mode_value = 2;
|
|
}
|
|
}
|
|
}
|
|
|
|
wacom_set_device_mode(hdev, wacom_wac);
|
|
|
|
if (features->type == HID_GENERIC)
|
|
return wacom_hid_set_device_mode(hdev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void wacom_retrieve_hid_descriptor(struct hid_device *hdev,
|
|
struct wacom_features *features)
|
|
{
|
|
struct wacom *wacom = hid_get_drvdata(hdev);
|
|
struct usb_interface *intf = wacom->intf;
|
|
|
|
/* default features */
|
|
features->x_fuzz = 4;
|
|
features->y_fuzz = 4;
|
|
features->pressure_fuzz = 0;
|
|
features->distance_fuzz = 1;
|
|
features->tilt_fuzz = 1;
|
|
|
|
/*
|
|
* The wireless device HID is basic and layout conflicts with
|
|
* other tablets (monitor and touch interface can look like pen).
|
|
* Skip the query for this type and modify defaults based on
|
|
* interface number.
|
|
*/
|
|
if (features->type == WIRELESS && intf) {
|
|
if (intf->cur_altsetting->desc.bInterfaceNumber == 0)
|
|
features->device_type = WACOM_DEVICETYPE_WL_MONITOR;
|
|
else
|
|
features->device_type = WACOM_DEVICETYPE_NONE;
|
|
return;
|
|
}
|
|
|
|
wacom_parse_hid(hdev, features);
|
|
}
|
|
|
|
struct wacom_hdev_data {
|
|
struct list_head list;
|
|
struct kref kref;
|
|
struct hid_device *dev;
|
|
struct wacom_shared shared;
|
|
};
|
|
|
|
static LIST_HEAD(wacom_udev_list);
|
|
static DEFINE_MUTEX(wacom_udev_list_lock);
|
|
|
|
static bool wacom_are_sibling(struct hid_device *hdev,
|
|
struct hid_device *sibling)
|
|
{
|
|
struct wacom *wacom = hid_get_drvdata(hdev);
|
|
struct wacom_features *features = &wacom->wacom_wac.features;
|
|
struct wacom *sibling_wacom = hid_get_drvdata(sibling);
|
|
struct wacom_features *sibling_features = &sibling_wacom->wacom_wac.features;
|
|
__u32 oVid = features->oVid ? features->oVid : hdev->vendor;
|
|
__u32 oPid = features->oPid ? features->oPid : hdev->product;
|
|
|
|
/* The defined oVid/oPid must match that of the sibling */
|
|
if (features->oVid != HID_ANY_ID && sibling->vendor != oVid)
|
|
return false;
|
|
if (features->oPid != HID_ANY_ID && sibling->product != oPid)
|
|
return false;
|
|
|
|
/*
|
|
* Devices with the same VID/PID must share the same physical
|
|
* device path, while those with different VID/PID must share
|
|
* the same physical parent device path.
|
|
*/
|
|
if (hdev->vendor == sibling->vendor && hdev->product == sibling->product) {
|
|
if (!hid_compare_device_paths(hdev, sibling, '/'))
|
|
return false;
|
|
} else {
|
|
if (!hid_compare_device_paths(hdev, sibling, '.'))
|
|
return false;
|
|
}
|
|
|
|
/* Skip the remaining heuristics unless you are a HID_GENERIC device */
|
|
if (features->type != HID_GENERIC)
|
|
return true;
|
|
|
|
/*
|
|
* Direct-input devices may not be siblings of indirect-input
|
|
* devices.
|
|
*/
|
|
if ((features->device_type & WACOM_DEVICETYPE_DIRECT) &&
|
|
!(sibling_features->device_type & WACOM_DEVICETYPE_DIRECT))
|
|
return false;
|
|
|
|
/*
|
|
* Indirect-input devices may not be siblings of direct-input
|
|
* devices.
|
|
*/
|
|
if (!(features->device_type & WACOM_DEVICETYPE_DIRECT) &&
|
|
(sibling_features->device_type & WACOM_DEVICETYPE_DIRECT))
|
|
return false;
|
|
|
|
/* Pen devices may only be siblings of touch devices */
|
|
if ((features->device_type & WACOM_DEVICETYPE_PEN) &&
|
|
!(sibling_features->device_type & WACOM_DEVICETYPE_TOUCH))
|
|
return false;
|
|
|
|
/* Touch devices may only be siblings of pen devices */
|
|
if ((features->device_type & WACOM_DEVICETYPE_TOUCH) &&
|
|
!(sibling_features->device_type & WACOM_DEVICETYPE_PEN))
|
|
return false;
|
|
|
|
/*
|
|
* No reason could be found for these two devices to NOT be
|
|
* siblings, so there's a good chance they ARE siblings
|
|
*/
|
|
return true;
|
|
}
|
|
|
|
static struct wacom_hdev_data *wacom_get_hdev_data(struct hid_device *hdev)
|
|
{
|
|
struct wacom_hdev_data *data;
|
|
|
|
/* Try to find an already-probed interface from the same device */
|
|
list_for_each_entry(data, &wacom_udev_list, list) {
|
|
if (hid_compare_device_paths(hdev, data->dev, '/')) {
|
|
kref_get(&data->kref);
|
|
return data;
|
|
}
|
|
}
|
|
|
|
/* Fallback to finding devices that appear to be "siblings" */
|
|
list_for_each_entry(data, &wacom_udev_list, list) {
|
|
if (wacom_are_sibling(hdev, data->dev)) {
|
|
kref_get(&data->kref);
|
|
return data;
|
|
}
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static void wacom_release_shared_data(struct kref *kref)
|
|
{
|
|
struct wacom_hdev_data *data =
|
|
container_of(kref, struct wacom_hdev_data, kref);
|
|
|
|
mutex_lock(&wacom_udev_list_lock);
|
|
list_del(&data->list);
|
|
mutex_unlock(&wacom_udev_list_lock);
|
|
|
|
kfree(data);
|
|
}
|
|
|
|
static void wacom_remove_shared_data(void *res)
|
|
{
|
|
struct wacom *wacom = res;
|
|
struct wacom_hdev_data *data;
|
|
struct wacom_wac *wacom_wac = &wacom->wacom_wac;
|
|
|
|
if (wacom_wac->shared) {
|
|
data = container_of(wacom_wac->shared, struct wacom_hdev_data,
|
|
shared);
|
|
|
|
if (wacom_wac->shared->touch == wacom->hdev)
|
|
wacom_wac->shared->touch = NULL;
|
|
else if (wacom_wac->shared->pen == wacom->hdev)
|
|
wacom_wac->shared->pen = NULL;
|
|
|
|
kref_put(&data->kref, wacom_release_shared_data);
|
|
wacom_wac->shared = NULL;
|
|
}
|
|
}
|
|
|
|
static int wacom_add_shared_data(struct hid_device *hdev)
|
|
{
|
|
struct wacom *wacom = hid_get_drvdata(hdev);
|
|
struct wacom_wac *wacom_wac = &wacom->wacom_wac;
|
|
struct wacom_hdev_data *data;
|
|
int retval = 0;
|
|
|
|
mutex_lock(&wacom_udev_list_lock);
|
|
|
|
data = wacom_get_hdev_data(hdev);
|
|
if (!data) {
|
|
data = kzalloc(sizeof(struct wacom_hdev_data), GFP_KERNEL);
|
|
if (!data) {
|
|
mutex_unlock(&wacom_udev_list_lock);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
kref_init(&data->kref);
|
|
data->dev = hdev;
|
|
list_add_tail(&data->list, &wacom_udev_list);
|
|
}
|
|
|
|
mutex_unlock(&wacom_udev_list_lock);
|
|
|
|
wacom_wac->shared = &data->shared;
|
|
|
|
retval = devm_add_action_or_reset(&hdev->dev, wacom_remove_shared_data, wacom);
|
|
if (retval)
|
|
return retval;
|
|
|
|
if (wacom_wac->features.device_type & WACOM_DEVICETYPE_TOUCH)
|
|
wacom_wac->shared->touch = hdev;
|
|
else if (wacom_wac->features.device_type & WACOM_DEVICETYPE_PEN)
|
|
wacom_wac->shared->pen = hdev;
|
|
|
|
return retval;
|
|
}
|
|
|
|
static int wacom_led_control(struct wacom *wacom)
|
|
{
|
|
unsigned char *buf;
|
|
int retval;
|
|
unsigned char report_id = WAC_CMD_LED_CONTROL;
|
|
int buf_size = 9;
|
|
|
|
if (!wacom->led.groups)
|
|
return -ENOTSUPP;
|
|
|
|
if (wacom->wacom_wac.features.type == REMOTE)
|
|
return -ENOTSUPP;
|
|
|
|
if (wacom->wacom_wac.pid) { /* wireless connected */
|
|
report_id = WAC_CMD_WL_LED_CONTROL;
|
|
buf_size = 13;
|
|
}
|
|
else if (wacom->wacom_wac.features.type == INTUOSP2_BT) {
|
|
report_id = WAC_CMD_WL_INTUOSP2;
|
|
buf_size = 51;
|
|
}
|
|
buf = kzalloc(buf_size, GFP_KERNEL);
|
|
if (!buf)
|
|
return -ENOMEM;
|
|
|
|
if (wacom->wacom_wac.features.type == HID_GENERIC) {
|
|
buf[0] = WAC_CMD_LED_CONTROL_GENERIC;
|
|
buf[1] = wacom->led.llv;
|
|
buf[2] = wacom->led.groups[0].select & 0x03;
|
|
|
|
} else if ((wacom->wacom_wac.features.type >= INTUOS5S &&
|
|
wacom->wacom_wac.features.type <= INTUOSPL)) {
|
|
/*
|
|
* Touch Ring and crop mark LED luminance may take on
|
|
* one of four values:
|
|
* 0 = Low; 1 = Medium; 2 = High; 3 = Off
|
|
*/
|
|
int ring_led = wacom->led.groups[0].select & 0x03;
|
|
int ring_lum = (((wacom->led.llv & 0x60) >> 5) - 1) & 0x03;
|
|
int crop_lum = 0;
|
|
unsigned char led_bits = (crop_lum << 4) | (ring_lum << 2) | (ring_led);
|
|
|
|
buf[0] = report_id;
|
|
if (wacom->wacom_wac.pid) {
|
|
wacom_get_report(wacom->hdev, HID_FEATURE_REPORT,
|
|
buf, buf_size, WAC_CMD_RETRIES);
|
|
buf[0] = report_id;
|
|
buf[4] = led_bits;
|
|
} else
|
|
buf[1] = led_bits;
|
|
}
|
|
else if (wacom->wacom_wac.features.type == INTUOSP2_BT) {
|
|
buf[0] = report_id;
|
|
buf[4] = 100; // Power Connection LED (ORANGE)
|
|
buf[5] = 100; // BT Connection LED (BLUE)
|
|
buf[6] = 100; // Paper Mode (RED?)
|
|
buf[7] = 100; // Paper Mode (GREEN?)
|
|
buf[8] = 100; // Paper Mode (BLUE?)
|
|
buf[9] = wacom->led.llv;
|
|
buf[10] = wacom->led.groups[0].select & 0x03;
|
|
}
|
|
else {
|
|
int led = wacom->led.groups[0].select | 0x4;
|
|
|
|
if (wacom->wacom_wac.features.type == WACOM_21UX2 ||
|
|
wacom->wacom_wac.features.type == WACOM_24HD)
|
|
led |= (wacom->led.groups[1].select << 4) | 0x40;
|
|
|
|
buf[0] = report_id;
|
|
buf[1] = led;
|
|
buf[2] = wacom->led.llv;
|
|
buf[3] = wacom->led.hlv;
|
|
buf[4] = wacom->led.img_lum;
|
|
}
|
|
|
|
retval = wacom_set_report(wacom->hdev, HID_FEATURE_REPORT, buf, buf_size,
|
|
WAC_CMD_RETRIES);
|
|
kfree(buf);
|
|
|
|
return retval;
|
|
}
|
|
|
|
static int wacom_led_putimage(struct wacom *wacom, int button_id, u8 xfer_id,
|
|
const unsigned len, const void *img)
|
|
{
|
|
unsigned char *buf;
|
|
int i, retval;
|
|
const unsigned chunk_len = len / 4; /* 4 chunks are needed to be sent */
|
|
|
|
buf = kzalloc(chunk_len + 3 , GFP_KERNEL);
|
|
if (!buf)
|
|
return -ENOMEM;
|
|
|
|
/* Send 'start' command */
|
|
buf[0] = WAC_CMD_ICON_START;
|
|
buf[1] = 1;
|
|
retval = wacom_set_report(wacom->hdev, HID_FEATURE_REPORT, buf, 2,
|
|
WAC_CMD_RETRIES);
|
|
if (retval < 0)
|
|
goto out;
|
|
|
|
buf[0] = xfer_id;
|
|
buf[1] = button_id & 0x07;
|
|
for (i = 0; i < 4; i++) {
|
|
buf[2] = i;
|
|
memcpy(buf + 3, img + i * chunk_len, chunk_len);
|
|
|
|
retval = wacom_set_report(wacom->hdev, HID_FEATURE_REPORT,
|
|
buf, chunk_len + 3, WAC_CMD_RETRIES);
|
|
if (retval < 0)
|
|
break;
|
|
}
|
|
|
|
/* Send 'stop' */
|
|
buf[0] = WAC_CMD_ICON_START;
|
|
buf[1] = 0;
|
|
wacom_set_report(wacom->hdev, HID_FEATURE_REPORT, buf, 2,
|
|
WAC_CMD_RETRIES);
|
|
|
|
out:
|
|
kfree(buf);
|
|
return retval;
|
|
}
|
|
|
|
static ssize_t wacom_led_select_store(struct device *dev, int set_id,
|
|
const char *buf, size_t count)
|
|
{
|
|
struct hid_device *hdev = to_hid_device(dev);
|
|
struct wacom *wacom = hid_get_drvdata(hdev);
|
|
unsigned int id;
|
|
int err;
|
|
|
|
err = kstrtouint(buf, 10, &id);
|
|
if (err)
|
|
return err;
|
|
|
|
mutex_lock(&wacom->lock);
|
|
|
|
wacom->led.groups[set_id].select = id & 0x3;
|
|
err = wacom_led_control(wacom);
|
|
|
|
mutex_unlock(&wacom->lock);
|
|
|
|
return err < 0 ? err : count;
|
|
}
|
|
|
|
#define DEVICE_LED_SELECT_ATTR(SET_ID) \
|
|
static ssize_t wacom_led##SET_ID##_select_store(struct device *dev, \
|
|
struct device_attribute *attr, const char *buf, size_t count) \
|
|
{ \
|
|
return wacom_led_select_store(dev, SET_ID, buf, count); \
|
|
} \
|
|
static ssize_t wacom_led##SET_ID##_select_show(struct device *dev, \
|
|
struct device_attribute *attr, char *buf) \
|
|
{ \
|
|
struct hid_device *hdev = to_hid_device(dev);\
|
|
struct wacom *wacom = hid_get_drvdata(hdev); \
|
|
return scnprintf(buf, PAGE_SIZE, "%d\n", \
|
|
wacom->led.groups[SET_ID].select); \
|
|
} \
|
|
static DEVICE_ATTR(status_led##SET_ID##_select, DEV_ATTR_RW_PERM, \
|
|
wacom_led##SET_ID##_select_show, \
|
|
wacom_led##SET_ID##_select_store)
|
|
|
|
DEVICE_LED_SELECT_ATTR(0);
|
|
DEVICE_LED_SELECT_ATTR(1);
|
|
|
|
static ssize_t wacom_luminance_store(struct wacom *wacom, u8 *dest,
|
|
const char *buf, size_t count)
|
|
{
|
|
unsigned int value;
|
|
int err;
|
|
|
|
err = kstrtouint(buf, 10, &value);
|
|
if (err)
|
|
return err;
|
|
|
|
mutex_lock(&wacom->lock);
|
|
|
|
*dest = value & 0x7f;
|
|
err = wacom_led_control(wacom);
|
|
|
|
mutex_unlock(&wacom->lock);
|
|
|
|
return err < 0 ? err : count;
|
|
}
|
|
|
|
#define DEVICE_LUMINANCE_ATTR(name, field) \
|
|
static ssize_t wacom_##name##_luminance_store(struct device *dev, \
|
|
struct device_attribute *attr, const char *buf, size_t count) \
|
|
{ \
|
|
struct hid_device *hdev = to_hid_device(dev);\
|
|
struct wacom *wacom = hid_get_drvdata(hdev); \
|
|
\
|
|
return wacom_luminance_store(wacom, &wacom->led.field, \
|
|
buf, count); \
|
|
} \
|
|
static ssize_t wacom_##name##_luminance_show(struct device *dev, \
|
|
struct device_attribute *attr, char *buf) \
|
|
{ \
|
|
struct wacom *wacom = dev_get_drvdata(dev); \
|
|
return scnprintf(buf, PAGE_SIZE, "%d\n", wacom->led.field); \
|
|
} \
|
|
static DEVICE_ATTR(name##_luminance, DEV_ATTR_RW_PERM, \
|
|
wacom_##name##_luminance_show, \
|
|
wacom_##name##_luminance_store)
|
|
|
|
DEVICE_LUMINANCE_ATTR(status0, llv);
|
|
DEVICE_LUMINANCE_ATTR(status1, hlv);
|
|
DEVICE_LUMINANCE_ATTR(buttons, img_lum);
|
|
|
|
static ssize_t wacom_button_image_store(struct device *dev, int button_id,
|
|
const char *buf, size_t count)
|
|
{
|
|
struct hid_device *hdev = to_hid_device(dev);
|
|
struct wacom *wacom = hid_get_drvdata(hdev);
|
|
int err;
|
|
unsigned len;
|
|
u8 xfer_id;
|
|
|
|
if (hdev->bus == BUS_BLUETOOTH) {
|
|
len = 256;
|
|
xfer_id = WAC_CMD_ICON_BT_XFER;
|
|
} else {
|
|
len = 1024;
|
|
xfer_id = WAC_CMD_ICON_XFER;
|
|
}
|
|
|
|
if (count != len)
|
|
return -EINVAL;
|
|
|
|
mutex_lock(&wacom->lock);
|
|
|
|
err = wacom_led_putimage(wacom, button_id, xfer_id, len, buf);
|
|
|
|
mutex_unlock(&wacom->lock);
|
|
|
|
return err < 0 ? err : count;
|
|
}
|
|
|
|
#define DEVICE_BTNIMG_ATTR(BUTTON_ID) \
|
|
static ssize_t wacom_btnimg##BUTTON_ID##_store(struct device *dev, \
|
|
struct device_attribute *attr, const char *buf, size_t count) \
|
|
{ \
|
|
return wacom_button_image_store(dev, BUTTON_ID, buf, count); \
|
|
} \
|
|
static DEVICE_ATTR(button##BUTTON_ID##_rawimg, DEV_ATTR_WO_PERM, \
|
|
NULL, wacom_btnimg##BUTTON_ID##_store)
|
|
|
|
DEVICE_BTNIMG_ATTR(0);
|
|
DEVICE_BTNIMG_ATTR(1);
|
|
DEVICE_BTNIMG_ATTR(2);
|
|
DEVICE_BTNIMG_ATTR(3);
|
|
DEVICE_BTNIMG_ATTR(4);
|
|
DEVICE_BTNIMG_ATTR(5);
|
|
DEVICE_BTNIMG_ATTR(6);
|
|
DEVICE_BTNIMG_ATTR(7);
|
|
|
|
static struct attribute *cintiq_led_attrs[] = {
|
|
&dev_attr_status_led0_select.attr,
|
|
&dev_attr_status_led1_select.attr,
|
|
NULL
|
|
};
|
|
|
|
static const struct attribute_group cintiq_led_attr_group = {
|
|
.name = "wacom_led",
|
|
.attrs = cintiq_led_attrs,
|
|
};
|
|
|
|
static struct attribute *intuos4_led_attrs[] = {
|
|
&dev_attr_status0_luminance.attr,
|
|
&dev_attr_status1_luminance.attr,
|
|
&dev_attr_status_led0_select.attr,
|
|
&dev_attr_buttons_luminance.attr,
|
|
&dev_attr_button0_rawimg.attr,
|
|
&dev_attr_button1_rawimg.attr,
|
|
&dev_attr_button2_rawimg.attr,
|
|
&dev_attr_button3_rawimg.attr,
|
|
&dev_attr_button4_rawimg.attr,
|
|
&dev_attr_button5_rawimg.attr,
|
|
&dev_attr_button6_rawimg.attr,
|
|
&dev_attr_button7_rawimg.attr,
|
|
NULL
|
|
};
|
|
|
|
static const struct attribute_group intuos4_led_attr_group = {
|
|
.name = "wacom_led",
|
|
.attrs = intuos4_led_attrs,
|
|
};
|
|
|
|
static struct attribute *intuos5_led_attrs[] = {
|
|
&dev_attr_status0_luminance.attr,
|
|
&dev_attr_status_led0_select.attr,
|
|
NULL
|
|
};
|
|
|
|
static const struct attribute_group intuos5_led_attr_group = {
|
|
.name = "wacom_led",
|
|
.attrs = intuos5_led_attrs,
|
|
};
|
|
|
|
static struct attribute *generic_led_attrs[] = {
|
|
&dev_attr_status0_luminance.attr,
|
|
&dev_attr_status_led0_select.attr,
|
|
NULL
|
|
};
|
|
|
|
static const struct attribute_group generic_led_attr_group = {
|
|
.name = "wacom_led",
|
|
.attrs = generic_led_attrs,
|
|
};
|
|
|
|
struct wacom_sysfs_group_devres {
|
|
const struct attribute_group *group;
|
|
struct kobject *root;
|
|
};
|
|
|
|
static void wacom_devm_sysfs_group_release(struct device *dev, void *res)
|
|
{
|
|
struct wacom_sysfs_group_devres *devres = res;
|
|
struct kobject *kobj = devres->root;
|
|
|
|
dev_dbg(dev, "%s: dropping reference to %s\n",
|
|
__func__, devres->group->name);
|
|
sysfs_remove_group(kobj, devres->group);
|
|
}
|
|
|
|
static int __wacom_devm_sysfs_create_group(struct wacom *wacom,
|
|
struct kobject *root,
|
|
const struct attribute_group *group)
|
|
{
|
|
struct wacom_sysfs_group_devres *devres;
|
|
int error;
|
|
|
|
devres = devres_alloc(wacom_devm_sysfs_group_release,
|
|
sizeof(struct wacom_sysfs_group_devres),
|
|
GFP_KERNEL);
|
|
if (!devres)
|
|
return -ENOMEM;
|
|
|
|
devres->group = group;
|
|
devres->root = root;
|
|
|
|
error = sysfs_create_group(devres->root, group);
|
|
if (error) {
|
|
devres_free(devres);
|
|
return error;
|
|
}
|
|
|
|
devres_add(&wacom->hdev->dev, devres);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int wacom_devm_sysfs_create_group(struct wacom *wacom,
|
|
const struct attribute_group *group)
|
|
{
|
|
return __wacom_devm_sysfs_create_group(wacom, &wacom->hdev->dev.kobj,
|
|
group);
|
|
}
|
|
|
|
static void wacom_devm_kfifo_release(struct device *dev, void *res)
|
|
{
|
|
struct kfifo_rec_ptr_2 *devres = res;
|
|
|
|
kfifo_free(devres);
|
|
}
|
|
|
|
static int wacom_devm_kfifo_alloc(struct wacom *wacom)
|
|
{
|
|
struct wacom_wac *wacom_wac = &wacom->wacom_wac;
|
|
struct kfifo_rec_ptr_2 *pen_fifo;
|
|
int error;
|
|
|
|
pen_fifo = devres_alloc(wacom_devm_kfifo_release,
|
|
sizeof(struct kfifo_rec_ptr_2),
|
|
GFP_KERNEL);
|
|
|
|
if (!pen_fifo)
|
|
return -ENOMEM;
|
|
|
|
error = kfifo_alloc(pen_fifo, WACOM_PKGLEN_MAX, GFP_KERNEL);
|
|
if (error) {
|
|
devres_free(pen_fifo);
|
|
return error;
|
|
}
|
|
|
|
devres_add(&wacom->hdev->dev, pen_fifo);
|
|
wacom_wac->pen_fifo = pen_fifo;
|
|
|
|
return 0;
|
|
}
|
|
|
|
enum led_brightness wacom_leds_brightness_get(struct wacom_led *led)
|
|
{
|
|
struct wacom *wacom = led->wacom;
|
|
|
|
if (wacom->led.max_hlv)
|
|
return led->hlv * LED_FULL / wacom->led.max_hlv;
|
|
|
|
if (wacom->led.max_llv)
|
|
return led->llv * LED_FULL / wacom->led.max_llv;
|
|
|
|
/* device doesn't support brightness tuning */
|
|
return LED_FULL;
|
|
}
|
|
|
|
static enum led_brightness __wacom_led_brightness_get(struct led_classdev *cdev)
|
|
{
|
|
struct wacom_led *led = container_of(cdev, struct wacom_led, cdev);
|
|
struct wacom *wacom = led->wacom;
|
|
|
|
if (wacom->led.groups[led->group].select != led->id)
|
|
return LED_OFF;
|
|
|
|
return wacom_leds_brightness_get(led);
|
|
}
|
|
|
|
static int wacom_led_brightness_set(struct led_classdev *cdev,
|
|
enum led_brightness brightness)
|
|
{
|
|
struct wacom_led *led = container_of(cdev, struct wacom_led, cdev);
|
|
struct wacom *wacom = led->wacom;
|
|
int error;
|
|
|
|
mutex_lock(&wacom->lock);
|
|
|
|
if (!wacom->led.groups || (brightness == LED_OFF &&
|
|
wacom->led.groups[led->group].select != led->id)) {
|
|
error = 0;
|
|
goto out;
|
|
}
|
|
|
|
led->llv = wacom->led.llv = wacom->led.max_llv * brightness / LED_FULL;
|
|
led->hlv = wacom->led.hlv = wacom->led.max_hlv * brightness / LED_FULL;
|
|
|
|
wacom->led.groups[led->group].select = led->id;
|
|
|
|
error = wacom_led_control(wacom);
|
|
|
|
out:
|
|
mutex_unlock(&wacom->lock);
|
|
|
|
return error;
|
|
}
|
|
|
|
static void wacom_led_readonly_brightness_set(struct led_classdev *cdev,
|
|
enum led_brightness brightness)
|
|
{
|
|
}
|
|
|
|
static int wacom_led_register_one(struct device *dev, struct wacom *wacom,
|
|
struct wacom_led *led, unsigned int group,
|
|
unsigned int id, bool read_only)
|
|
{
|
|
int error;
|
|
char *name;
|
|
|
|
name = devm_kasprintf(dev, GFP_KERNEL,
|
|
"%s::wacom-%d.%d",
|
|
dev_name(dev),
|
|
group,
|
|
id);
|
|
if (!name)
|
|
return -ENOMEM;
|
|
|
|
if (!read_only) {
|
|
led->trigger.name = name;
|
|
error = devm_led_trigger_register(dev, &led->trigger);
|
|
if (error) {
|
|
hid_err(wacom->hdev,
|
|
"failed to register LED trigger %s: %d\n",
|
|
led->cdev.name, error);
|
|
return error;
|
|
}
|
|
}
|
|
|
|
led->group = group;
|
|
led->id = id;
|
|
led->wacom = wacom;
|
|
led->llv = wacom->led.llv;
|
|
led->hlv = wacom->led.hlv;
|
|
led->cdev.name = name;
|
|
led->cdev.max_brightness = LED_FULL;
|
|
led->cdev.flags = LED_HW_PLUGGABLE;
|
|
led->cdev.brightness_get = __wacom_led_brightness_get;
|
|
if (!read_only) {
|
|
led->cdev.brightness_set_blocking = wacom_led_brightness_set;
|
|
led->cdev.default_trigger = led->cdev.name;
|
|
} else {
|
|
led->cdev.brightness_set = wacom_led_readonly_brightness_set;
|
|
}
|
|
|
|
error = devm_led_classdev_register(dev, &led->cdev);
|
|
if (error) {
|
|
hid_err(wacom->hdev,
|
|
"failed to register LED %s: %d\n",
|
|
led->cdev.name, error);
|
|
led->cdev.name = NULL;
|
|
return error;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void wacom_led_groups_release_one(void *data)
|
|
{
|
|
struct wacom_group_leds *group = data;
|
|
|
|
devres_release_group(group->dev, group);
|
|
}
|
|
|
|
static int wacom_led_groups_alloc_and_register_one(struct device *dev,
|
|
struct wacom *wacom,
|
|
int group_id, int count,
|
|
bool read_only)
|
|
{
|
|
struct wacom_led *leds;
|
|
int i, error;
|
|
|
|
if (group_id >= wacom->led.count || count <= 0)
|
|
return -EINVAL;
|
|
|
|
if (!devres_open_group(dev, &wacom->led.groups[group_id], GFP_KERNEL))
|
|
return -ENOMEM;
|
|
|
|
leds = devm_kcalloc(dev, count, sizeof(struct wacom_led), GFP_KERNEL);
|
|
if (!leds) {
|
|
error = -ENOMEM;
|
|
goto err;
|
|
}
|
|
|
|
wacom->led.groups[group_id].leds = leds;
|
|
wacom->led.groups[group_id].count = count;
|
|
|
|
for (i = 0; i < count; i++) {
|
|
error = wacom_led_register_one(dev, wacom, &leds[i],
|
|
group_id, i, read_only);
|
|
if (error)
|
|
goto err;
|
|
}
|
|
|
|
wacom->led.groups[group_id].dev = dev;
|
|
|
|
devres_close_group(dev, &wacom->led.groups[group_id]);
|
|
|
|
/*
|
|
* There is a bug (?) in devm_led_classdev_register() in which its
|
|
* increments the refcount of the parent. If the parent is an input
|
|
* device, that means the ref count never reaches 0 when
|
|
* devm_input_device_release() gets called.
|
|
* This means that the LEDs are still there after disconnect.
|
|
* Manually force the release of the group so that the leds are released
|
|
* once we are done using them.
|
|
*/
|
|
error = devm_add_action_or_reset(&wacom->hdev->dev,
|
|
wacom_led_groups_release_one,
|
|
&wacom->led.groups[group_id]);
|
|
if (error)
|
|
return error;
|
|
|
|
return 0;
|
|
|
|
err:
|
|
devres_release_group(dev, &wacom->led.groups[group_id]);
|
|
return error;
|
|
}
|
|
|
|
struct wacom_led *wacom_led_find(struct wacom *wacom, unsigned int group_id,
|
|
unsigned int id)
|
|
{
|
|
struct wacom_group_leds *group;
|
|
|
|
if (group_id >= wacom->led.count)
|
|
return NULL;
|
|
|
|
group = &wacom->led.groups[group_id];
|
|
|
|
if (!group->leds)
|
|
return NULL;
|
|
|
|
id %= group->count;
|
|
|
|
return &group->leds[id];
|
|
}
|
|
|
|
/*
|
|
* wacom_led_next: gives the next available led with a wacom trigger.
|
|
*
|
|
* returns the next available struct wacom_led which has its default trigger
|
|
* or the current one if none is available.
|
|
*/
|
|
struct wacom_led *wacom_led_next(struct wacom *wacom, struct wacom_led *cur)
|
|
{
|
|
struct wacom_led *next_led;
|
|
int group, next;
|
|
|
|
if (!wacom || !cur)
|
|
return NULL;
|
|
|
|
group = cur->group;
|
|
next = cur->id;
|
|
|
|
do {
|
|
next_led = wacom_led_find(wacom, group, ++next);
|
|
if (!next_led || next_led == cur)
|
|
return next_led;
|
|
} while (next_led->cdev.trigger != &next_led->trigger);
|
|
|
|
return next_led;
|
|
}
|
|
|
|
static void wacom_led_groups_release(void *data)
|
|
{
|
|
struct wacom *wacom = data;
|
|
|
|
wacom->led.groups = NULL;
|
|
wacom->led.count = 0;
|
|
}
|
|
|
|
static int wacom_led_groups_allocate(struct wacom *wacom, int count)
|
|
{
|
|
struct device *dev = &wacom->hdev->dev;
|
|
struct wacom_group_leds *groups;
|
|
int error;
|
|
|
|
groups = devm_kcalloc(dev, count, sizeof(struct wacom_group_leds),
|
|
GFP_KERNEL);
|
|
if (!groups)
|
|
return -ENOMEM;
|
|
|
|
error = devm_add_action_or_reset(dev, wacom_led_groups_release, wacom);
|
|
if (error)
|
|
return error;
|
|
|
|
wacom->led.groups = groups;
|
|
wacom->led.count = count;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int wacom_leds_alloc_and_register(struct wacom *wacom, int group_count,
|
|
int led_per_group, bool read_only)
|
|
{
|
|
struct device *dev;
|
|
int i, error;
|
|
|
|
if (!wacom->wacom_wac.pad_input)
|
|
return -EINVAL;
|
|
|
|
dev = &wacom->wacom_wac.pad_input->dev;
|
|
|
|
error = wacom_led_groups_allocate(wacom, group_count);
|
|
if (error)
|
|
return error;
|
|
|
|
for (i = 0; i < group_count; i++) {
|
|
error = wacom_led_groups_alloc_and_register_one(dev, wacom, i,
|
|
led_per_group,
|
|
read_only);
|
|
if (error)
|
|
return error;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int wacom_initialize_leds(struct wacom *wacom)
|
|
{
|
|
int error;
|
|
|
|
if (!(wacom->wacom_wac.features.device_type & WACOM_DEVICETYPE_PAD))
|
|
return 0;
|
|
|
|
/* Initialize default values */
|
|
switch (wacom->wacom_wac.features.type) {
|
|
case HID_GENERIC:
|
|
if (!wacom->generic_has_leds)
|
|
return 0;
|
|
wacom->led.llv = 100;
|
|
wacom->led.max_llv = 100;
|
|
|
|
error = wacom_leds_alloc_and_register(wacom, 1, 4, false);
|
|
if (error) {
|
|
hid_err(wacom->hdev,
|
|
"cannot create leds err: %d\n", error);
|
|
return error;
|
|
}
|
|
|
|
error = wacom_devm_sysfs_create_group(wacom,
|
|
&generic_led_attr_group);
|
|
break;
|
|
|
|
case INTUOS4S:
|
|
case INTUOS4:
|
|
case INTUOS4WL:
|
|
case INTUOS4L:
|
|
wacom->led.llv = 10;
|
|
wacom->led.hlv = 20;
|
|
wacom->led.max_llv = 127;
|
|
wacom->led.max_hlv = 127;
|
|
wacom->led.img_lum = 10;
|
|
|
|
error = wacom_leds_alloc_and_register(wacom, 1, 4, false);
|
|
if (error) {
|
|
hid_err(wacom->hdev,
|
|
"cannot create leds err: %d\n", error);
|
|
return error;
|
|
}
|
|
|
|
error = wacom_devm_sysfs_create_group(wacom,
|
|
&intuos4_led_attr_group);
|
|
break;
|
|
|
|
case WACOM_24HD:
|
|
case WACOM_21UX2:
|
|
wacom->led.llv = 0;
|
|
wacom->led.hlv = 0;
|
|
wacom->led.img_lum = 0;
|
|
|
|
error = wacom_leds_alloc_and_register(wacom, 2, 4, false);
|
|
if (error) {
|
|
hid_err(wacom->hdev,
|
|
"cannot create leds err: %d\n", error);
|
|
return error;
|
|
}
|
|
|
|
error = wacom_devm_sysfs_create_group(wacom,
|
|
&cintiq_led_attr_group);
|
|
break;
|
|
|
|
case INTUOS5S:
|
|
case INTUOS5:
|
|
case INTUOS5L:
|
|
case INTUOSPS:
|
|
case INTUOSPM:
|
|
case INTUOSPL:
|
|
wacom->led.llv = 32;
|
|
wacom->led.max_llv = 96;
|
|
|
|
error = wacom_leds_alloc_and_register(wacom, 1, 4, false);
|
|
if (error) {
|
|
hid_err(wacom->hdev,
|
|
"cannot create leds err: %d\n", error);
|
|
return error;
|
|
}
|
|
|
|
error = wacom_devm_sysfs_create_group(wacom,
|
|
&intuos5_led_attr_group);
|
|
break;
|
|
|
|
case INTUOSP2_BT:
|
|
wacom->led.llv = 50;
|
|
wacom->led.max_llv = 100;
|
|
error = wacom_leds_alloc_and_register(wacom, 1, 4, false);
|
|
if (error) {
|
|
hid_err(wacom->hdev,
|
|
"cannot create leds err: %d\n", error);
|
|
return error;
|
|
}
|
|
return 0;
|
|
|
|
case REMOTE:
|
|
wacom->led.llv = 255;
|
|
wacom->led.max_llv = 255;
|
|
error = wacom_led_groups_allocate(wacom, 5);
|
|
if (error) {
|
|
hid_err(wacom->hdev,
|
|
"cannot create leds err: %d\n", error);
|
|
return error;
|
|
}
|
|
return 0;
|
|
|
|
default:
|
|
return 0;
|
|
}
|
|
|
|
if (error) {
|
|
hid_err(wacom->hdev,
|
|
"cannot create sysfs group err: %d\n", error);
|
|
return error;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void wacom_init_work(struct work_struct *work)
|
|
{
|
|
struct wacom *wacom = container_of(work, struct wacom, init_work.work);
|
|
|
|
_wacom_query_tablet_data(wacom);
|
|
wacom_led_control(wacom);
|
|
}
|
|
|
|
static void wacom_query_tablet_data(struct wacom *wacom)
|
|
{
|
|
schedule_delayed_work(&wacom->init_work, msecs_to_jiffies(1000));
|
|
}
|
|
|
|
static enum power_supply_property wacom_battery_props[] = {
|
|
POWER_SUPPLY_PROP_MODEL_NAME,
|
|
POWER_SUPPLY_PROP_PRESENT,
|
|
POWER_SUPPLY_PROP_STATUS,
|
|
POWER_SUPPLY_PROP_SCOPE,
|
|
POWER_SUPPLY_PROP_CAPACITY
|
|
};
|
|
|
|
static int wacom_battery_get_property(struct power_supply *psy,
|
|
enum power_supply_property psp,
|
|
union power_supply_propval *val)
|
|
{
|
|
struct wacom_battery *battery = power_supply_get_drvdata(psy);
|
|
int ret = 0;
|
|
|
|
switch (psp) {
|
|
case POWER_SUPPLY_PROP_MODEL_NAME:
|
|
val->strval = battery->wacom->wacom_wac.name;
|
|
break;
|
|
case POWER_SUPPLY_PROP_PRESENT:
|
|
val->intval = battery->bat_connected;
|
|
break;
|
|
case POWER_SUPPLY_PROP_SCOPE:
|
|
val->intval = POWER_SUPPLY_SCOPE_DEVICE;
|
|
break;
|
|
case POWER_SUPPLY_PROP_CAPACITY:
|
|
val->intval = battery->battery_capacity;
|
|
break;
|
|
case POWER_SUPPLY_PROP_STATUS:
|
|
if (battery->bat_status != WACOM_POWER_SUPPLY_STATUS_AUTO)
|
|
val->intval = battery->bat_status;
|
|
else if (battery->bat_charging)
|
|
val->intval = POWER_SUPPLY_STATUS_CHARGING;
|
|
else if (battery->battery_capacity == 100 &&
|
|
battery->ps_connected)
|
|
val->intval = POWER_SUPPLY_STATUS_FULL;
|
|
else if (battery->ps_connected)
|
|
val->intval = POWER_SUPPLY_STATUS_NOT_CHARGING;
|
|
else
|
|
val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
|
|
break;
|
|
default:
|
|
ret = -EINVAL;
|
|
break;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int __wacom_initialize_battery(struct wacom *wacom,
|
|
struct wacom_battery *battery)
|
|
{
|
|
static atomic_t battery_no = ATOMIC_INIT(0);
|
|
struct device *dev = &wacom->hdev->dev;
|
|
struct power_supply_config psy_cfg = { .drv_data = battery, };
|
|
struct power_supply *ps_bat;
|
|
struct power_supply_desc *bat_desc = &battery->bat_desc;
|
|
unsigned long n;
|
|
int error;
|
|
|
|
if (!devres_open_group(dev, bat_desc, GFP_KERNEL))
|
|
return -ENOMEM;
|
|
|
|
battery->wacom = wacom;
|
|
|
|
n = atomic_inc_return(&battery_no) - 1;
|
|
|
|
bat_desc->properties = wacom_battery_props;
|
|
bat_desc->num_properties = ARRAY_SIZE(wacom_battery_props);
|
|
bat_desc->get_property = wacom_battery_get_property;
|
|
sprintf(battery->bat_name, "wacom_battery_%ld", n);
|
|
bat_desc->name = battery->bat_name;
|
|
bat_desc->type = POWER_SUPPLY_TYPE_BATTERY;
|
|
bat_desc->use_for_apm = 0;
|
|
|
|
ps_bat = devm_power_supply_register(dev, bat_desc, &psy_cfg);
|
|
if (IS_ERR(ps_bat)) {
|
|
error = PTR_ERR(ps_bat);
|
|
goto err;
|
|
}
|
|
|
|
power_supply_powers(ps_bat, &wacom->hdev->dev);
|
|
|
|
battery->battery = ps_bat;
|
|
|
|
devres_close_group(dev, bat_desc);
|
|
return 0;
|
|
|
|
err:
|
|
devres_release_group(dev, bat_desc);
|
|
return error;
|
|
}
|
|
|
|
static int wacom_initialize_battery(struct wacom *wacom)
|
|
{
|
|
if (wacom->wacom_wac.features.quirks & WACOM_QUIRK_BATTERY)
|
|
return __wacom_initialize_battery(wacom, &wacom->battery);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void wacom_destroy_battery(struct wacom *wacom)
|
|
{
|
|
if (wacom->battery.battery) {
|
|
devres_release_group(&wacom->hdev->dev,
|
|
&wacom->battery.bat_desc);
|
|
wacom->battery.battery = NULL;
|
|
}
|
|
}
|
|
|
|
static ssize_t wacom_show_speed(struct device *dev,
|
|
struct device_attribute
|
|
*attr, char *buf)
|
|
{
|
|
struct hid_device *hdev = to_hid_device(dev);
|
|
struct wacom *wacom = hid_get_drvdata(hdev);
|
|
|
|
return sysfs_emit(buf, "%i\n", wacom->wacom_wac.bt_high_speed);
|
|
}
|
|
|
|
static ssize_t wacom_store_speed(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t count)
|
|
{
|
|
struct hid_device *hdev = to_hid_device(dev);
|
|
struct wacom *wacom = hid_get_drvdata(hdev);
|
|
u8 new_speed;
|
|
|
|
if (kstrtou8(buf, 0, &new_speed))
|
|
return -EINVAL;
|
|
|
|
if (new_speed != 0 && new_speed != 1)
|
|
return -EINVAL;
|
|
|
|
wacom_bt_query_tablet_data(hdev, new_speed, &wacom->wacom_wac.features);
|
|
|
|
return count;
|
|
}
|
|
|
|
static DEVICE_ATTR(speed, DEV_ATTR_RW_PERM,
|
|
wacom_show_speed, wacom_store_speed);
|
|
|
|
|
|
static ssize_t wacom_show_remote_mode(struct kobject *kobj,
|
|
struct kobj_attribute *kattr,
|
|
char *buf, int index)
|
|
{
|
|
struct device *dev = kobj_to_dev(kobj->parent);
|
|
struct hid_device *hdev = to_hid_device(dev);
|
|
struct wacom *wacom = hid_get_drvdata(hdev);
|
|
u8 mode;
|
|
|
|
mode = wacom->led.groups[index].select;
|
|
return sprintf(buf, "%d\n", mode < 3 ? mode : -1);
|
|
}
|
|
|
|
#define DEVICE_EKR_ATTR_GROUP(SET_ID) \
|
|
static ssize_t wacom_show_remote##SET_ID##_mode(struct kobject *kobj, \
|
|
struct kobj_attribute *kattr, char *buf) \
|
|
{ \
|
|
return wacom_show_remote_mode(kobj, kattr, buf, SET_ID); \
|
|
} \
|
|
static struct kobj_attribute remote##SET_ID##_mode_attr = { \
|
|
.attr = {.name = "remote_mode", \
|
|
.mode = DEV_ATTR_RO_PERM}, \
|
|
.show = wacom_show_remote##SET_ID##_mode, \
|
|
}; \
|
|
static struct attribute *remote##SET_ID##_serial_attrs[] = { \
|
|
&remote##SET_ID##_mode_attr.attr, \
|
|
NULL \
|
|
}; \
|
|
static const struct attribute_group remote##SET_ID##_serial_group = { \
|
|
.name = NULL, \
|
|
.attrs = remote##SET_ID##_serial_attrs, \
|
|
}
|
|
|
|
DEVICE_EKR_ATTR_GROUP(0);
|
|
DEVICE_EKR_ATTR_GROUP(1);
|
|
DEVICE_EKR_ATTR_GROUP(2);
|
|
DEVICE_EKR_ATTR_GROUP(3);
|
|
DEVICE_EKR_ATTR_GROUP(4);
|
|
|
|
static int wacom_remote_create_attr_group(struct wacom *wacom, __u32 serial,
|
|
int index)
|
|
{
|
|
int error = 0;
|
|
struct wacom_remote *remote = wacom->remote;
|
|
|
|
remote->remotes[index].group.name = devm_kasprintf(&wacom->hdev->dev,
|
|
GFP_KERNEL,
|
|
"%d", serial);
|
|
if (!remote->remotes[index].group.name)
|
|
return -ENOMEM;
|
|
|
|
error = __wacom_devm_sysfs_create_group(wacom, remote->remote_dir,
|
|
&remote->remotes[index].group);
|
|
if (error) {
|
|
remote->remotes[index].group.name = NULL;
|
|
hid_err(wacom->hdev,
|
|
"cannot create sysfs group err: %d\n", error);
|
|
return error;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int wacom_cmd_unpair_remote(struct wacom *wacom, unsigned char selector)
|
|
{
|
|
const size_t buf_size = 2;
|
|
unsigned char *buf;
|
|
int retval;
|
|
|
|
buf = kzalloc(buf_size, GFP_KERNEL);
|
|
if (!buf)
|
|
return -ENOMEM;
|
|
|
|
buf[0] = WAC_CMD_DELETE_PAIRING;
|
|
buf[1] = selector;
|
|
|
|
retval = wacom_set_report(wacom->hdev, HID_OUTPUT_REPORT, buf,
|
|
buf_size, WAC_CMD_RETRIES);
|
|
kfree(buf);
|
|
|
|
return retval;
|
|
}
|
|
|
|
static ssize_t wacom_store_unpair_remote(struct kobject *kobj,
|
|
struct kobj_attribute *attr,
|
|
const char *buf, size_t count)
|
|
{
|
|
unsigned char selector = 0;
|
|
struct device *dev = kobj_to_dev(kobj->parent);
|
|
struct hid_device *hdev = to_hid_device(dev);
|
|
struct wacom *wacom = hid_get_drvdata(hdev);
|
|
int err;
|
|
|
|
if (!strncmp(buf, "*\n", 2)) {
|
|
selector = WAC_CMD_UNPAIR_ALL;
|
|
} else {
|
|
hid_info(wacom->hdev, "remote: unrecognized unpair code: %s\n",
|
|
buf);
|
|
return -1;
|
|
}
|
|
|
|
mutex_lock(&wacom->lock);
|
|
|
|
err = wacom_cmd_unpair_remote(wacom, selector);
|
|
mutex_unlock(&wacom->lock);
|
|
|
|
return err < 0 ? err : count;
|
|
}
|
|
|
|
static struct kobj_attribute unpair_remote_attr = {
|
|
.attr = {.name = "unpair_remote", .mode = 0200},
|
|
.store = wacom_store_unpair_remote,
|
|
};
|
|
|
|
static const struct attribute *remote_unpair_attrs[] = {
|
|
&unpair_remote_attr.attr,
|
|
NULL
|
|
};
|
|
|
|
static void wacom_remotes_destroy(void *data)
|
|
{
|
|
struct wacom *wacom = data;
|
|
struct wacom_remote *remote = wacom->remote;
|
|
|
|
if (!remote)
|
|
return;
|
|
|
|
kobject_put(remote->remote_dir);
|
|
kfifo_free(&remote->remote_fifo);
|
|
wacom->remote = NULL;
|
|
}
|
|
|
|
static int wacom_initialize_remotes(struct wacom *wacom)
|
|
{
|
|
int error = 0;
|
|
struct wacom_remote *remote;
|
|
int i;
|
|
|
|
if (wacom->wacom_wac.features.type != REMOTE)
|
|
return 0;
|
|
|
|
remote = devm_kzalloc(&wacom->hdev->dev, sizeof(*wacom->remote),
|
|
GFP_KERNEL);
|
|
if (!remote)
|
|
return -ENOMEM;
|
|
|
|
wacom->remote = remote;
|
|
|
|
spin_lock_init(&remote->remote_lock);
|
|
|
|
error = kfifo_alloc(&remote->remote_fifo,
|
|
5 * sizeof(struct wacom_remote_data),
|
|
GFP_KERNEL);
|
|
if (error) {
|
|
hid_err(wacom->hdev, "failed allocating remote_fifo\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
remote->remotes[0].group = remote0_serial_group;
|
|
remote->remotes[1].group = remote1_serial_group;
|
|
remote->remotes[2].group = remote2_serial_group;
|
|
remote->remotes[3].group = remote3_serial_group;
|
|
remote->remotes[4].group = remote4_serial_group;
|
|
|
|
remote->remote_dir = kobject_create_and_add("wacom_remote",
|
|
&wacom->hdev->dev.kobj);
|
|
if (!remote->remote_dir)
|
|
return -ENOMEM;
|
|
|
|
error = sysfs_create_files(remote->remote_dir, remote_unpair_attrs);
|
|
|
|
if (error) {
|
|
hid_err(wacom->hdev,
|
|
"cannot create sysfs group err: %d\n", error);
|
|
return error;
|
|
}
|
|
|
|
for (i = 0; i < WACOM_MAX_REMOTES; i++) {
|
|
wacom->led.groups[i].select = WACOM_STATUS_UNKNOWN;
|
|
remote->remotes[i].serial = 0;
|
|
}
|
|
|
|
error = devm_add_action_or_reset(&wacom->hdev->dev,
|
|
wacom_remotes_destroy, wacom);
|
|
if (error)
|
|
return error;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct input_dev *wacom_allocate_input(struct wacom *wacom)
|
|
{
|
|
struct input_dev *input_dev;
|
|
struct hid_device *hdev = wacom->hdev;
|
|
struct wacom_wac *wacom_wac = &(wacom->wacom_wac);
|
|
|
|
input_dev = devm_input_allocate_device(&hdev->dev);
|
|
if (!input_dev)
|
|
return NULL;
|
|
|
|
input_dev->name = wacom_wac->features.name;
|
|
input_dev->phys = hdev->phys;
|
|
input_dev->dev.parent = &hdev->dev;
|
|
input_dev->open = wacom_open;
|
|
input_dev->close = wacom_close;
|
|
input_dev->uniq = hdev->uniq;
|
|
input_dev->id.bustype = hdev->bus;
|
|
input_dev->id.vendor = hdev->vendor;
|
|
input_dev->id.product = wacom_wac->pid ? wacom_wac->pid : hdev->product;
|
|
input_dev->id.version = hdev->version;
|
|
input_set_drvdata(input_dev, wacom);
|
|
|
|
return input_dev;
|
|
}
|
|
|
|
static int wacom_allocate_inputs(struct wacom *wacom)
|
|
{
|
|
struct wacom_wac *wacom_wac = &(wacom->wacom_wac);
|
|
|
|
wacom_wac->pen_input = wacom_allocate_input(wacom);
|
|
wacom_wac->touch_input = wacom_allocate_input(wacom);
|
|
wacom_wac->pad_input = wacom_allocate_input(wacom);
|
|
if (!wacom_wac->pen_input ||
|
|
!wacom_wac->touch_input ||
|
|
!wacom_wac->pad_input)
|
|
return -ENOMEM;
|
|
|
|
wacom_wac->pen_input->name = wacom_wac->pen_name;
|
|
wacom_wac->touch_input->name = wacom_wac->touch_name;
|
|
wacom_wac->pad_input->name = wacom_wac->pad_name;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int wacom_register_inputs(struct wacom *wacom)
|
|
{
|
|
struct input_dev *pen_input_dev, *touch_input_dev, *pad_input_dev;
|
|
struct wacom_wac *wacom_wac = &(wacom->wacom_wac);
|
|
int error = 0;
|
|
|
|
pen_input_dev = wacom_wac->pen_input;
|
|
touch_input_dev = wacom_wac->touch_input;
|
|
pad_input_dev = wacom_wac->pad_input;
|
|
|
|
if (!pen_input_dev || !touch_input_dev || !pad_input_dev)
|
|
return -EINVAL;
|
|
|
|
error = wacom_setup_pen_input_capabilities(pen_input_dev, wacom_wac);
|
|
if (error) {
|
|
/* no pen in use on this interface */
|
|
input_free_device(pen_input_dev);
|
|
wacom_wac->pen_input = NULL;
|
|
pen_input_dev = NULL;
|
|
} else {
|
|
error = input_register_device(pen_input_dev);
|
|
if (error)
|
|
goto fail;
|
|
}
|
|
|
|
error = wacom_setup_touch_input_capabilities(touch_input_dev, wacom_wac);
|
|
if (error) {
|
|
/* no touch in use on this interface */
|
|
input_free_device(touch_input_dev);
|
|
wacom_wac->touch_input = NULL;
|
|
touch_input_dev = NULL;
|
|
} else {
|
|
error = input_register_device(touch_input_dev);
|
|
if (error)
|
|
goto fail;
|
|
}
|
|
|
|
error = wacom_setup_pad_input_capabilities(pad_input_dev, wacom_wac);
|
|
if (error) {
|
|
/* no pad events using this interface */
|
|
input_free_device(pad_input_dev);
|
|
wacom_wac->pad_input = NULL;
|
|
pad_input_dev = NULL;
|
|
} else {
|
|
error = input_register_device(pad_input_dev);
|
|
if (error)
|
|
goto fail;
|
|
}
|
|
|
|
return 0;
|
|
|
|
fail:
|
|
wacom_wac->pad_input = NULL;
|
|
wacom_wac->touch_input = NULL;
|
|
wacom_wac->pen_input = NULL;
|
|
return error;
|
|
}
|
|
|
|
/*
|
|
* Not all devices report physical dimensions from HID.
|
|
* Compute the default from hardcoded logical dimension
|
|
* and resolution before driver overwrites them.
|
|
*/
|
|
static void wacom_set_default_phy(struct wacom_features *features)
|
|
{
|
|
if (features->x_resolution) {
|
|
features->x_phy = (features->x_max * 100) /
|
|
features->x_resolution;
|
|
features->y_phy = (features->y_max * 100) /
|
|
features->y_resolution;
|
|
}
|
|
}
|
|
|
|
static void wacom_calculate_res(struct wacom_features *features)
|
|
{
|
|
/* set unit to "100th of a mm" for devices not reported by HID */
|
|
if (!features->unit) {
|
|
features->unit = 0x11;
|
|
features->unitExpo = -3;
|
|
}
|
|
|
|
features->x_resolution = wacom_calc_hid_res(features->x_max,
|
|
features->x_phy,
|
|
features->unit,
|
|
features->unitExpo);
|
|
features->y_resolution = wacom_calc_hid_res(features->y_max,
|
|
features->y_phy,
|
|
features->unit,
|
|
features->unitExpo);
|
|
}
|
|
|
|
void wacom_battery_work(struct work_struct *work)
|
|
{
|
|
struct wacom *wacom = container_of(work, struct wacom, battery_work);
|
|
|
|
if ((wacom->wacom_wac.features.quirks & WACOM_QUIRK_BATTERY) &&
|
|
!wacom->battery.battery) {
|
|
wacom_initialize_battery(wacom);
|
|
}
|
|
else if (!(wacom->wacom_wac.features.quirks & WACOM_QUIRK_BATTERY) &&
|
|
wacom->battery.battery) {
|
|
wacom_destroy_battery(wacom);
|
|
}
|
|
}
|
|
|
|
static size_t wacom_compute_pktlen(struct hid_device *hdev)
|
|
{
|
|
struct hid_report_enum *report_enum;
|
|
struct hid_report *report;
|
|
size_t size = 0;
|
|
|
|
report_enum = hdev->report_enum + HID_INPUT_REPORT;
|
|
|
|
list_for_each_entry(report, &report_enum->report_list, list) {
|
|
size_t report_size = hid_report_len(report);
|
|
if (report_size > size)
|
|
size = report_size;
|
|
}
|
|
|
|
return size;
|
|
}
|
|
|
|
static void wacom_update_name(struct wacom *wacom, const char *suffix)
|
|
{
|
|
struct wacom_wac *wacom_wac = &wacom->wacom_wac;
|
|
struct wacom_features *features = &wacom_wac->features;
|
|
char name[WACOM_NAME_MAX - 20]; /* Leave some room for suffixes */
|
|
|
|
/* Generic devices name unspecified */
|
|
if ((features->type == HID_GENERIC) && !strcmp("Wacom HID", features->name)) {
|
|
char *product_name = wacom->hdev->name;
|
|
|
|
if (hid_is_usb(wacom->hdev)) {
|
|
struct usb_interface *intf = to_usb_interface(wacom->hdev->dev.parent);
|
|
struct usb_device *dev = interface_to_usbdev(intf);
|
|
product_name = dev->product;
|
|
}
|
|
|
|
if (wacom->hdev->bus == BUS_I2C) {
|
|
snprintf(name, sizeof(name), "%s %X",
|
|
features->name, wacom->hdev->product);
|
|
} else if (strstr(product_name, "Wacom") ||
|
|
strstr(product_name, "wacom") ||
|
|
strstr(product_name, "WACOM")) {
|
|
if (strscpy(name, product_name, sizeof(name)) < 0) {
|
|
hid_warn(wacom->hdev, "String overflow while assembling device name");
|
|
}
|
|
} else {
|
|
snprintf(name, sizeof(name), "Wacom %s", product_name);
|
|
}
|
|
|
|
/* strip out excess whitespaces */
|
|
while (1) {
|
|
char *gap = strstr(name, " ");
|
|
if (gap == NULL)
|
|
break;
|
|
/* shift everything including the terminator */
|
|
memmove(gap, gap+1, strlen(gap));
|
|
}
|
|
|
|
/* get rid of trailing whitespace */
|
|
if (name[strlen(name)-1] == ' ')
|
|
name[strlen(name)-1] = '\0';
|
|
} else {
|
|
if (strscpy(name, features->name, sizeof(name)) < 0) {
|
|
hid_warn(wacom->hdev, "String overflow while assembling device name");
|
|
}
|
|
}
|
|
|
|
snprintf(wacom_wac->name, sizeof(wacom_wac->name), "%s%s",
|
|
name, suffix);
|
|
|
|
/* Append the device type to the name */
|
|
snprintf(wacom_wac->pen_name, sizeof(wacom_wac->pen_name),
|
|
"%s%s Pen", name, suffix);
|
|
snprintf(wacom_wac->touch_name, sizeof(wacom_wac->touch_name),
|
|
"%s%s Finger", name, suffix);
|
|
snprintf(wacom_wac->pad_name, sizeof(wacom_wac->pad_name),
|
|
"%s%s Pad", name, suffix);
|
|
}
|
|
|
|
static void wacom_release_resources(struct wacom *wacom)
|
|
{
|
|
struct hid_device *hdev = wacom->hdev;
|
|
|
|
if (!wacom->resources)
|
|
return;
|
|
|
|
devres_release_group(&hdev->dev, wacom);
|
|
|
|
wacom->resources = false;
|
|
|
|
wacom->wacom_wac.pen_input = NULL;
|
|
wacom->wacom_wac.touch_input = NULL;
|
|
wacom->wacom_wac.pad_input = NULL;
|
|
}
|
|
|
|
static void wacom_set_shared_values(struct wacom_wac *wacom_wac)
|
|
{
|
|
if (wacom_wac->features.device_type & WACOM_DEVICETYPE_TOUCH) {
|
|
wacom_wac->shared->type = wacom_wac->features.type;
|
|
wacom_wac->shared->touch_input = wacom_wac->touch_input;
|
|
}
|
|
|
|
if (wacom_wac->has_mute_touch_switch) {
|
|
wacom_wac->shared->has_mute_touch_switch = true;
|
|
/* Hardware touch switch may be off. Wait until
|
|
* we know the switch state to decide is_touch_on.
|
|
* Softkey state should be initialized to "on" to
|
|
* match historic default.
|
|
*/
|
|
if (wacom_wac->is_soft_touch_switch)
|
|
wacom_wac->shared->is_touch_on = true;
|
|
}
|
|
|
|
if (wacom_wac->shared->has_mute_touch_switch &&
|
|
wacom_wac->shared->touch_input) {
|
|
set_bit(EV_SW, wacom_wac->shared->touch_input->evbit);
|
|
input_set_capability(wacom_wac->shared->touch_input, EV_SW,
|
|
SW_MUTE_DEVICE);
|
|
}
|
|
}
|
|
|
|
static int wacom_parse_and_register(struct wacom *wacom, bool wireless)
|
|
{
|
|
struct wacom_wac *wacom_wac = &wacom->wacom_wac;
|
|
struct wacom_features *features = &wacom_wac->features;
|
|
struct hid_device *hdev = wacom->hdev;
|
|
int error;
|
|
unsigned int connect_mask = HID_CONNECT_HIDRAW;
|
|
|
|
features->pktlen = wacom_compute_pktlen(hdev);
|
|
if (features->pktlen > WACOM_PKGLEN_MAX)
|
|
return -EINVAL;
|
|
|
|
if (!devres_open_group(&hdev->dev, wacom, GFP_KERNEL))
|
|
return -ENOMEM;
|
|
|
|
wacom->resources = true;
|
|
|
|
error = wacom_allocate_inputs(wacom);
|
|
if (error)
|
|
goto fail;
|
|
|
|
/*
|
|
* Bamboo Pad has a generic hid handling for the Pen, and we switch it
|
|
* into debug mode for the touch part.
|
|
* We ignore the other interfaces.
|
|
*/
|
|
if (features->type == BAMBOO_PAD) {
|
|
if (features->pktlen == WACOM_PKGLEN_PENABLED) {
|
|
features->type = HID_GENERIC;
|
|
} else if ((features->pktlen != WACOM_PKGLEN_BPAD_TOUCH) &&
|
|
(features->pktlen != WACOM_PKGLEN_BPAD_TOUCH_USB)) {
|
|
error = -ENODEV;
|
|
goto fail;
|
|
}
|
|
}
|
|
|
|
/* set the default size in case we do not get them from hid */
|
|
wacom_set_default_phy(features);
|
|
|
|
/* Retrieve the physical and logical size for touch devices */
|
|
wacom_retrieve_hid_descriptor(hdev, features);
|
|
wacom_setup_device_quirks(wacom);
|
|
|
|
if (features->device_type == WACOM_DEVICETYPE_NONE &&
|
|
features->type != WIRELESS) {
|
|
error = features->type == HID_GENERIC ? -ENODEV : 0;
|
|
|
|
dev_warn(&hdev->dev, "Unknown device_type for '%s'. %s.",
|
|
hdev->name,
|
|
error ? "Ignoring" : "Assuming pen");
|
|
|
|
if (error)
|
|
goto fail;
|
|
|
|
features->device_type |= WACOM_DEVICETYPE_PEN;
|
|
}
|
|
|
|
wacom_calculate_res(features);
|
|
|
|
wacom_update_name(wacom, wireless ? " (WL)" : "");
|
|
|
|
/* pen only Bamboo neither support touch nor pad */
|
|
if ((features->type == BAMBOO_PEN) &&
|
|
((features->device_type & WACOM_DEVICETYPE_TOUCH) ||
|
|
(features->device_type & WACOM_DEVICETYPE_PAD))) {
|
|
error = -ENODEV;
|
|
goto fail;
|
|
}
|
|
|
|
error = wacom_add_shared_data(hdev);
|
|
if (error)
|
|
goto fail;
|
|
|
|
error = wacom_register_inputs(wacom);
|
|
if (error)
|
|
goto fail;
|
|
|
|
if (wacom->wacom_wac.features.device_type & WACOM_DEVICETYPE_PAD) {
|
|
error = wacom_initialize_leds(wacom);
|
|
if (error)
|
|
goto fail;
|
|
|
|
error = wacom_initialize_remotes(wacom);
|
|
if (error)
|
|
goto fail;
|
|
}
|
|
|
|
if (features->type == HID_GENERIC)
|
|
connect_mask |= HID_CONNECT_DRIVER;
|
|
|
|
/* Regular HID work starts now */
|
|
error = hid_hw_start(hdev, connect_mask);
|
|
if (error) {
|
|
hid_err(hdev, "hw start failed\n");
|
|
goto fail;
|
|
}
|
|
|
|
if (!wireless) {
|
|
/* Note that if query fails it is not a hard failure */
|
|
wacom_query_tablet_data(wacom);
|
|
}
|
|
|
|
/* touch only Bamboo doesn't support pen */
|
|
if ((features->type == BAMBOO_TOUCH) &&
|
|
(features->device_type & WACOM_DEVICETYPE_PEN)) {
|
|
cancel_delayed_work_sync(&wacom->init_work);
|
|
_wacom_query_tablet_data(wacom);
|
|
error = -ENODEV;
|
|
goto fail_quirks;
|
|
}
|
|
|
|
if (features->device_type & WACOM_DEVICETYPE_WL_MONITOR) {
|
|
error = hid_hw_open(hdev);
|
|
if (error) {
|
|
hid_err(hdev, "hw open failed\n");
|
|
goto fail_quirks;
|
|
}
|
|
}
|
|
|
|
wacom_set_shared_values(wacom_wac);
|
|
devres_close_group(&hdev->dev, wacom);
|
|
|
|
return 0;
|
|
|
|
fail_quirks:
|
|
hid_hw_stop(hdev);
|
|
fail:
|
|
wacom_release_resources(wacom);
|
|
return error;
|
|
}
|
|
|
|
static void wacom_wireless_work(struct work_struct *work)
|
|
{
|
|
struct wacom *wacom = container_of(work, struct wacom, wireless_work);
|
|
struct usb_device *usbdev = wacom->usbdev;
|
|
struct wacom_wac *wacom_wac = &wacom->wacom_wac;
|
|
struct hid_device *hdev1, *hdev2;
|
|
struct wacom *wacom1, *wacom2;
|
|
struct wacom_wac *wacom_wac1, *wacom_wac2;
|
|
int error;
|
|
|
|
/*
|
|
* Regardless if this is a disconnect or a new tablet,
|
|
* remove any existing input and battery devices.
|
|
*/
|
|
|
|
wacom_destroy_battery(wacom);
|
|
|
|
if (!usbdev)
|
|
return;
|
|
|
|
/* Stylus interface */
|
|
hdev1 = usb_get_intfdata(usbdev->config->interface[1]);
|
|
wacom1 = hid_get_drvdata(hdev1);
|
|
wacom_wac1 = &(wacom1->wacom_wac);
|
|
wacom_release_resources(wacom1);
|
|
|
|
/* Touch interface */
|
|
hdev2 = usb_get_intfdata(usbdev->config->interface[2]);
|
|
wacom2 = hid_get_drvdata(hdev2);
|
|
wacom_wac2 = &(wacom2->wacom_wac);
|
|
wacom_release_resources(wacom2);
|
|
|
|
if (wacom_wac->pid == 0) {
|
|
hid_info(wacom->hdev, "wireless tablet disconnected\n");
|
|
} else {
|
|
const struct hid_device_id *id = wacom_ids;
|
|
|
|
hid_info(wacom->hdev, "wireless tablet connected with PID %x\n",
|
|
wacom_wac->pid);
|
|
|
|
while (id->bus) {
|
|
if (id->vendor == USB_VENDOR_ID_WACOM &&
|
|
id->product == wacom_wac->pid)
|
|
break;
|
|
id++;
|
|
}
|
|
|
|
if (!id->bus) {
|
|
hid_info(wacom->hdev, "ignoring unknown PID.\n");
|
|
return;
|
|
}
|
|
|
|
/* Stylus interface */
|
|
wacom_wac1->features =
|
|
*((struct wacom_features *)id->driver_data);
|
|
|
|
wacom_wac1->pid = wacom_wac->pid;
|
|
hid_hw_stop(hdev1);
|
|
error = wacom_parse_and_register(wacom1, true);
|
|
if (error)
|
|
goto fail;
|
|
|
|
/* Touch interface */
|
|
if (wacom_wac1->features.touch_max ||
|
|
(wacom_wac1->features.type >= INTUOSHT &&
|
|
wacom_wac1->features.type <= BAMBOO_PT)) {
|
|
wacom_wac2->features =
|
|
*((struct wacom_features *)id->driver_data);
|
|
wacom_wac2->pid = wacom_wac->pid;
|
|
hid_hw_stop(hdev2);
|
|
error = wacom_parse_and_register(wacom2, true);
|
|
if (error)
|
|
goto fail;
|
|
}
|
|
|
|
if (strscpy(wacom_wac->name, wacom_wac1->name,
|
|
sizeof(wacom_wac->name)) < 0) {
|
|
hid_warn(wacom->hdev, "String overflow while assembling device name");
|
|
}
|
|
}
|
|
|
|
return;
|
|
|
|
fail:
|
|
wacom_release_resources(wacom1);
|
|
wacom_release_resources(wacom2);
|
|
return;
|
|
}
|
|
|
|
static void wacom_remote_destroy_one(struct wacom *wacom, unsigned int index)
|
|
{
|
|
struct wacom_remote *remote = wacom->remote;
|
|
u32 serial = remote->remotes[index].serial;
|
|
int i;
|
|
unsigned long flags;
|
|
|
|
for (i = 0; i < WACOM_MAX_REMOTES; i++) {
|
|
if (remote->remotes[i].serial == serial) {
|
|
|
|
spin_lock_irqsave(&remote->remote_lock, flags);
|
|
remote->remotes[i].registered = false;
|
|
spin_unlock_irqrestore(&remote->remote_lock, flags);
|
|
|
|
if (remote->remotes[i].battery.battery)
|
|
devres_release_group(&wacom->hdev->dev,
|
|
&remote->remotes[i].battery.bat_desc);
|
|
|
|
if (remote->remotes[i].group.name)
|
|
devres_release_group(&wacom->hdev->dev,
|
|
&remote->remotes[i]);
|
|
|
|
remote->remotes[i].serial = 0;
|
|
remote->remotes[i].group.name = NULL;
|
|
remote->remotes[i].battery.battery = NULL;
|
|
wacom->led.groups[i].select = WACOM_STATUS_UNKNOWN;
|
|
}
|
|
}
|
|
}
|
|
|
|
static int wacom_remote_create_one(struct wacom *wacom, u32 serial,
|
|
unsigned int index)
|
|
{
|
|
struct wacom_remote *remote = wacom->remote;
|
|
struct device *dev = &wacom->hdev->dev;
|
|
int error, k;
|
|
|
|
/* A remote can pair more than once with an EKR,
|
|
* check to make sure this serial isn't already paired.
|
|
*/
|
|
for (k = 0; k < WACOM_MAX_REMOTES; k++) {
|
|
if (remote->remotes[k].serial == serial)
|
|
break;
|
|
}
|
|
|
|
if (k < WACOM_MAX_REMOTES) {
|
|
remote->remotes[index].serial = serial;
|
|
return 0;
|
|
}
|
|
|
|
if (!devres_open_group(dev, &remote->remotes[index], GFP_KERNEL))
|
|
return -ENOMEM;
|
|
|
|
error = wacom_remote_create_attr_group(wacom, serial, index);
|
|
if (error)
|
|
goto fail;
|
|
|
|
remote->remotes[index].input = wacom_allocate_input(wacom);
|
|
if (!remote->remotes[index].input) {
|
|
error = -ENOMEM;
|
|
goto fail;
|
|
}
|
|
remote->remotes[index].input->uniq = remote->remotes[index].group.name;
|
|
remote->remotes[index].input->name = wacom->wacom_wac.pad_name;
|
|
|
|
if (!remote->remotes[index].input->name) {
|
|
error = -EINVAL;
|
|
goto fail;
|
|
}
|
|
|
|
error = wacom_setup_pad_input_capabilities(remote->remotes[index].input,
|
|
&wacom->wacom_wac);
|
|
if (error)
|
|
goto fail;
|
|
|
|
remote->remotes[index].serial = serial;
|
|
|
|
error = input_register_device(remote->remotes[index].input);
|
|
if (error)
|
|
goto fail;
|
|
|
|
error = wacom_led_groups_alloc_and_register_one(
|
|
&remote->remotes[index].input->dev,
|
|
wacom, index, 3, true);
|
|
if (error)
|
|
goto fail;
|
|
|
|
remote->remotes[index].registered = true;
|
|
|
|
devres_close_group(dev, &remote->remotes[index]);
|
|
return 0;
|
|
|
|
fail:
|
|
devres_release_group(dev, &remote->remotes[index]);
|
|
remote->remotes[index].serial = 0;
|
|
return error;
|
|
}
|
|
|
|
static int wacom_remote_attach_battery(struct wacom *wacom, int index)
|
|
{
|
|
struct wacom_remote *remote = wacom->remote;
|
|
int error;
|
|
|
|
if (!remote->remotes[index].registered)
|
|
return 0;
|
|
|
|
if (remote->remotes[index].battery.battery)
|
|
return 0;
|
|
|
|
if (wacom->led.groups[index].select == WACOM_STATUS_UNKNOWN)
|
|
return 0;
|
|
|
|
error = __wacom_initialize_battery(wacom,
|
|
&wacom->remote->remotes[index].battery);
|
|
if (error)
|
|
return error;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void wacom_remote_work(struct work_struct *work)
|
|
{
|
|
struct wacom *wacom = container_of(work, struct wacom, remote_work);
|
|
struct wacom_remote *remote = wacom->remote;
|
|
struct wacom_remote_data data;
|
|
unsigned long flags;
|
|
unsigned int count;
|
|
u32 serial;
|
|
int i;
|
|
|
|
spin_lock_irqsave(&remote->remote_lock, flags);
|
|
|
|
count = kfifo_out(&remote->remote_fifo, &data, sizeof(data));
|
|
|
|
if (count != sizeof(data)) {
|
|
hid_err(wacom->hdev,
|
|
"workitem triggered without status available\n");
|
|
spin_unlock_irqrestore(&remote->remote_lock, flags);
|
|
return;
|
|
}
|
|
|
|
if (!kfifo_is_empty(&remote->remote_fifo))
|
|
wacom_schedule_work(&wacom->wacom_wac, WACOM_WORKER_REMOTE);
|
|
|
|
spin_unlock_irqrestore(&remote->remote_lock, flags);
|
|
|
|
for (i = 0; i < WACOM_MAX_REMOTES; i++) {
|
|
serial = data.remote[i].serial;
|
|
if (data.remote[i].connected) {
|
|
|
|
if (remote->remotes[i].serial == serial) {
|
|
wacom_remote_attach_battery(wacom, i);
|
|
continue;
|
|
}
|
|
|
|
if (remote->remotes[i].serial)
|
|
wacom_remote_destroy_one(wacom, i);
|
|
|
|
wacom_remote_create_one(wacom, serial, i);
|
|
|
|
} else if (remote->remotes[i].serial) {
|
|
wacom_remote_destroy_one(wacom, i);
|
|
}
|
|
}
|
|
}
|
|
|
|
static void wacom_mode_change_work(struct work_struct *work)
|
|
{
|
|
struct wacom *wacom = container_of(work, struct wacom, mode_change_work);
|
|
struct wacom_shared *shared = wacom->wacom_wac.shared;
|
|
struct wacom *wacom1 = NULL;
|
|
struct wacom *wacom2 = NULL;
|
|
bool is_direct = wacom->wacom_wac.is_direct_mode;
|
|
int error = 0;
|
|
|
|
if (shared->pen) {
|
|
wacom1 = hid_get_drvdata(shared->pen);
|
|
wacom_release_resources(wacom1);
|
|
hid_hw_stop(wacom1->hdev);
|
|
wacom1->wacom_wac.has_mode_change = true;
|
|
wacom1->wacom_wac.is_direct_mode = is_direct;
|
|
}
|
|
|
|
if (shared->touch) {
|
|
wacom2 = hid_get_drvdata(shared->touch);
|
|
wacom_release_resources(wacom2);
|
|
hid_hw_stop(wacom2->hdev);
|
|
wacom2->wacom_wac.has_mode_change = true;
|
|
wacom2->wacom_wac.is_direct_mode = is_direct;
|
|
}
|
|
|
|
if (wacom1) {
|
|
error = wacom_parse_and_register(wacom1, false);
|
|
if (error)
|
|
return;
|
|
}
|
|
|
|
if (wacom2) {
|
|
error = wacom_parse_and_register(wacom2, false);
|
|
if (error)
|
|
return;
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
static int wacom_probe(struct hid_device *hdev,
|
|
const struct hid_device_id *id)
|
|
{
|
|
struct wacom *wacom;
|
|
struct wacom_wac *wacom_wac;
|
|
struct wacom_features *features;
|
|
int error;
|
|
|
|
if (!id->driver_data)
|
|
return -EINVAL;
|
|
|
|
hdev->quirks |= HID_QUIRK_NO_INIT_REPORTS;
|
|
|
|
/* hid-core sets this quirk for the boot interface */
|
|
hdev->quirks &= ~HID_QUIRK_NOGET;
|
|
|
|
wacom = devm_kzalloc(&hdev->dev, sizeof(struct wacom), GFP_KERNEL);
|
|
if (!wacom)
|
|
return -ENOMEM;
|
|
|
|
hid_set_drvdata(hdev, wacom);
|
|
wacom->hdev = hdev;
|
|
|
|
wacom_wac = &wacom->wacom_wac;
|
|
wacom_wac->features = *((struct wacom_features *)id->driver_data);
|
|
features = &wacom_wac->features;
|
|
|
|
if (features->check_for_hid_type && features->hid_type != hdev->type)
|
|
return -ENODEV;
|
|
|
|
error = wacom_devm_kfifo_alloc(wacom);
|
|
if (error)
|
|
return error;
|
|
|
|
wacom_wac->hid_data.inputmode = -1;
|
|
wacom_wac->mode_report = -1;
|
|
|
|
if (hid_is_usb(hdev)) {
|
|
struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
|
|
struct usb_device *dev = interface_to_usbdev(intf);
|
|
|
|
wacom->usbdev = dev;
|
|
wacom->intf = intf;
|
|
}
|
|
|
|
mutex_init(&wacom->lock);
|
|
INIT_DELAYED_WORK(&wacom->init_work, wacom_init_work);
|
|
INIT_WORK(&wacom->wireless_work, wacom_wireless_work);
|
|
INIT_WORK(&wacom->battery_work, wacom_battery_work);
|
|
INIT_WORK(&wacom->remote_work, wacom_remote_work);
|
|
INIT_WORK(&wacom->mode_change_work, wacom_mode_change_work);
|
|
timer_setup(&wacom->idleprox_timer, &wacom_idleprox_timeout, TIMER_DEFERRABLE);
|
|
|
|
/* ask for the report descriptor to be loaded by HID */
|
|
error = hid_parse(hdev);
|
|
if (error) {
|
|
hid_err(hdev, "parse failed\n");
|
|
return error;
|
|
}
|
|
|
|
if (features->type == BOOTLOADER) {
|
|
hid_warn(hdev, "Using device in hidraw-only mode");
|
|
return hid_hw_start(hdev, HID_CONNECT_HIDRAW);
|
|
}
|
|
|
|
error = wacom_parse_and_register(wacom, false);
|
|
if (error)
|
|
return error;
|
|
|
|
if (hdev->bus == BUS_BLUETOOTH) {
|
|
error = device_create_file(&hdev->dev, &dev_attr_speed);
|
|
if (error)
|
|
hid_warn(hdev,
|
|
"can't create sysfs speed attribute err: %d\n",
|
|
error);
|
|
}
|
|
|
|
wacom_wac->probe_complete = true;
|
|
return 0;
|
|
}
|
|
|
|
static void wacom_remove(struct hid_device *hdev)
|
|
{
|
|
struct wacom *wacom = hid_get_drvdata(hdev);
|
|
struct wacom_wac *wacom_wac = &wacom->wacom_wac;
|
|
struct wacom_features *features = &wacom_wac->features;
|
|
|
|
if (features->device_type & WACOM_DEVICETYPE_WL_MONITOR)
|
|
hid_hw_close(hdev);
|
|
|
|
hid_hw_stop(hdev);
|
|
|
|
cancel_delayed_work_sync(&wacom->init_work);
|
|
cancel_work_sync(&wacom->wireless_work);
|
|
cancel_work_sync(&wacom->battery_work);
|
|
cancel_work_sync(&wacom->remote_work);
|
|
cancel_work_sync(&wacom->mode_change_work);
|
|
del_timer_sync(&wacom->idleprox_timer);
|
|
if (hdev->bus == BUS_BLUETOOTH)
|
|
device_remove_file(&hdev->dev, &dev_attr_speed);
|
|
|
|
/* make sure we don't trigger the LEDs */
|
|
wacom_led_groups_release(wacom);
|
|
|
|
if (wacom->wacom_wac.features.type != REMOTE)
|
|
wacom_release_resources(wacom);
|
|
}
|
|
|
|
#ifdef CONFIG_PM
|
|
static int wacom_resume(struct hid_device *hdev)
|
|
{
|
|
struct wacom *wacom = hid_get_drvdata(hdev);
|
|
|
|
mutex_lock(&wacom->lock);
|
|
|
|
/* switch to wacom mode first */
|
|
_wacom_query_tablet_data(wacom);
|
|
wacom_led_control(wacom);
|
|
|
|
mutex_unlock(&wacom->lock);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int wacom_reset_resume(struct hid_device *hdev)
|
|
{
|
|
return wacom_resume(hdev);
|
|
}
|
|
#endif /* CONFIG_PM */
|
|
|
|
static struct hid_driver wacom_driver = {
|
|
.name = "wacom",
|
|
.id_table = wacom_ids,
|
|
.probe = wacom_probe,
|
|
.remove = wacom_remove,
|
|
.report = wacom_wac_report,
|
|
#ifdef CONFIG_PM
|
|
.resume = wacom_resume,
|
|
.reset_resume = wacom_reset_resume,
|
|
#endif
|
|
.raw_event = wacom_raw_event,
|
|
};
|
|
module_hid_driver(wacom_driver);
|
|
|
|
MODULE_VERSION(DRIVER_VERSION);
|
|
MODULE_AUTHOR(DRIVER_AUTHOR);
|
|
MODULE_DESCRIPTION(DRIVER_DESC);
|
|
MODULE_LICENSE("GPL");
|