238 lines
6.4 KiB
C
238 lines
6.4 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Plantronics USB HID Driver
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*
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* Copyright (c) 2014 JD Cole <jd.cole@plantronics.com>
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* Copyright (c) 2015-2018 Terry Junge <terry.junge@plantronics.com>
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*/
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/*
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*/
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#include "hid-ids.h"
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#include <linux/hid.h>
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#include <linux/module.h>
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#include <linux/jiffies.h>
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#define PLT_HID_1_0_PAGE 0xffa00000
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#define PLT_HID_2_0_PAGE 0xffa20000
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#define PLT_BASIC_TELEPHONY 0x0003
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#define PLT_BASIC_EXCEPTION 0x0005
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#define PLT_VOL_UP 0x00b1
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#define PLT_VOL_DOWN 0x00b2
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#define PLT1_VOL_UP (PLT_HID_1_0_PAGE | PLT_VOL_UP)
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#define PLT1_VOL_DOWN (PLT_HID_1_0_PAGE | PLT_VOL_DOWN)
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#define PLT2_VOL_UP (PLT_HID_2_0_PAGE | PLT_VOL_UP)
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#define PLT2_VOL_DOWN (PLT_HID_2_0_PAGE | PLT_VOL_DOWN)
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#define PLT_DA60 0xda60
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#define PLT_BT300_MIN 0x0413
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#define PLT_BT300_MAX 0x0418
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#define PLT_ALLOW_CONSUMER (field->application == HID_CP_CONSUMERCONTROL && \
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(usage->hid & HID_USAGE_PAGE) == HID_UP_CONSUMER)
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#define PLT_QUIRK_DOUBLE_VOLUME_KEYS BIT(0)
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#define PLT_DOUBLE_KEY_TIMEOUT 5 /* ms */
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struct plt_drv_data {
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unsigned long device_type;
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unsigned long last_volume_key_ts;
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u32 quirks;
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};
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static int plantronics_input_mapping(struct hid_device *hdev,
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struct hid_input *hi,
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struct hid_field *field,
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struct hid_usage *usage,
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unsigned long **bit, int *max)
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{
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unsigned short mapped_key;
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struct plt_drv_data *drv_data = hid_get_drvdata(hdev);
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unsigned long plt_type = drv_data->device_type;
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/* special case for PTT products */
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if (field->application == HID_GD_JOYSTICK)
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goto defaulted;
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/* handle volume up/down mapping */
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/* non-standard types or multi-HID interfaces - plt_type is PID */
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if (!(plt_type & HID_USAGE_PAGE)) {
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switch (plt_type) {
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case PLT_DA60:
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if (PLT_ALLOW_CONSUMER)
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goto defaulted;
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goto ignored;
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default:
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if (PLT_ALLOW_CONSUMER)
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goto defaulted;
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}
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}
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/* handle standard types - plt_type is 0xffa0uuuu or 0xffa2uuuu */
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/* 'basic telephony compliant' - allow default consumer page map */
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else if ((plt_type & HID_USAGE) >= PLT_BASIC_TELEPHONY &&
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(plt_type & HID_USAGE) != PLT_BASIC_EXCEPTION) {
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if (PLT_ALLOW_CONSUMER)
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goto defaulted;
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}
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/* not 'basic telephony' - apply legacy mapping */
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/* only map if the field is in the device's primary vendor page */
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else if (!((field->application ^ plt_type) & HID_USAGE_PAGE)) {
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switch (usage->hid) {
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case PLT1_VOL_UP:
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case PLT2_VOL_UP:
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mapped_key = KEY_VOLUMEUP;
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goto mapped;
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case PLT1_VOL_DOWN:
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case PLT2_VOL_DOWN:
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mapped_key = KEY_VOLUMEDOWN;
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goto mapped;
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}
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}
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/*
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* Future mapping of call control or other usages,
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* if and when keys are defined would go here
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* otherwise, ignore everything else that was not mapped
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*/
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ignored:
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return -1;
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defaulted:
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hid_dbg(hdev, "usage: %08x (appl: %08x) - defaulted\n",
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usage->hid, field->application);
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return 0;
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mapped:
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hid_map_usage_clear(hi, usage, bit, max, EV_KEY, mapped_key);
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hid_dbg(hdev, "usage: %08x (appl: %08x) - mapped to key %d\n",
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usage->hid, field->application, mapped_key);
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return 1;
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}
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static int plantronics_event(struct hid_device *hdev, struct hid_field *field,
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struct hid_usage *usage, __s32 value)
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{
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struct plt_drv_data *drv_data = hid_get_drvdata(hdev);
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if (drv_data->quirks & PLT_QUIRK_DOUBLE_VOLUME_KEYS) {
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unsigned long prev_ts, cur_ts;
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/* Usages are filtered in plantronics_usages. */
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if (!value) /* Handle key presses only. */
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return 0;
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prev_ts = drv_data->last_volume_key_ts;
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cur_ts = jiffies;
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if (jiffies_to_msecs(cur_ts - prev_ts) <= PLT_DOUBLE_KEY_TIMEOUT)
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return 1; /* Ignore the repeated key. */
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drv_data->last_volume_key_ts = cur_ts;
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}
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return 0;
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}
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static unsigned long plantronics_device_type(struct hid_device *hdev)
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{
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unsigned i, col_page;
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unsigned long plt_type = hdev->product;
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/* multi-HID interfaces? - plt_type is PID */
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if (plt_type >= PLT_BT300_MIN && plt_type <= PLT_BT300_MAX)
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goto exit;
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/* determine primary vendor page */
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for (i = 0; i < hdev->maxcollection; i++) {
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col_page = hdev->collection[i].usage & HID_USAGE_PAGE;
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if (col_page == PLT_HID_2_0_PAGE) {
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plt_type = hdev->collection[i].usage;
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break;
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}
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if (col_page == PLT_HID_1_0_PAGE)
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plt_type = hdev->collection[i].usage;
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}
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exit:
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hid_dbg(hdev, "plt_type decoded as: %08lx\n", plt_type);
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return plt_type;
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}
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static int plantronics_probe(struct hid_device *hdev,
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const struct hid_device_id *id)
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{
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struct plt_drv_data *drv_data;
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int ret;
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drv_data = devm_kzalloc(&hdev->dev, sizeof(*drv_data), GFP_KERNEL);
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if (!drv_data)
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return -ENOMEM;
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ret = hid_parse(hdev);
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if (ret) {
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hid_err(hdev, "parse failed\n");
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goto err;
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}
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drv_data->device_type = plantronics_device_type(hdev);
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drv_data->quirks = id->driver_data;
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drv_data->last_volume_key_ts = jiffies - msecs_to_jiffies(PLT_DOUBLE_KEY_TIMEOUT);
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hid_set_drvdata(hdev, drv_data);
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ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT |
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HID_CONNECT_HIDINPUT_FORCE | HID_CONNECT_HIDDEV_FORCE);
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if (ret)
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hid_err(hdev, "hw start failed\n");
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err:
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return ret;
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}
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static const struct hid_device_id plantronics_devices[] = {
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{ HID_USB_DEVICE(USB_VENDOR_ID_PLANTRONICS,
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USB_DEVICE_ID_PLANTRONICS_BLACKWIRE_3210_SERIES),
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.driver_data = PLT_QUIRK_DOUBLE_VOLUME_KEYS },
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{ HID_USB_DEVICE(USB_VENDOR_ID_PLANTRONICS,
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USB_DEVICE_ID_PLANTRONICS_BLACKWIRE_3220_SERIES),
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.driver_data = PLT_QUIRK_DOUBLE_VOLUME_KEYS },
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{ HID_USB_DEVICE(USB_VENDOR_ID_PLANTRONICS,
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USB_DEVICE_ID_PLANTRONICS_BLACKWIRE_3215_SERIES),
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.driver_data = PLT_QUIRK_DOUBLE_VOLUME_KEYS },
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{ HID_USB_DEVICE(USB_VENDOR_ID_PLANTRONICS,
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USB_DEVICE_ID_PLANTRONICS_BLACKWIRE_3225_SERIES),
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.driver_data = PLT_QUIRK_DOUBLE_VOLUME_KEYS },
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{ HID_USB_DEVICE(USB_VENDOR_ID_PLANTRONICS, HID_ANY_ID) },
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{ }
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};
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MODULE_DEVICE_TABLE(hid, plantronics_devices);
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static const struct hid_usage_id plantronics_usages[] = {
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{ HID_CP_VOLUMEUP, EV_KEY, HID_ANY_ID },
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{ HID_CP_VOLUMEDOWN, EV_KEY, HID_ANY_ID },
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{ HID_TERMINATOR, HID_TERMINATOR, HID_TERMINATOR }
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};
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static struct hid_driver plantronics_driver = {
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.name = "plantronics",
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.id_table = plantronics_devices,
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.usage_table = plantronics_usages,
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.input_mapping = plantronics_input_mapping,
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.event = plantronics_event,
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.probe = plantronics_probe,
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};
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module_hid_driver(plantronics_driver);
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MODULE_AUTHOR("JD Cole <jd.cole@plantronics.com>");
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MODULE_AUTHOR("Terry Junge <terry.junge@plantronics.com>");
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MODULE_DESCRIPTION("Plantronics USB HID Driver");
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MODULE_LICENSE("GPL");
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