v4.19.13 snapshot.
diff --git a/drivers/hid/hid-logitech-dj.c b/drivers/hid/hid-logitech-dj.c
new file mode 100644
index 0000000..826fa1e
--- /dev/null
+++ b/drivers/hid/hid-logitech-dj.c
@@ -0,0 +1,1177 @@
+/*
+ * HID driver for Logitech Unifying receivers
+ *
+ * Copyright (c) 2011 Logitech
+ */
+
+/*
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+
+#include <linux/device.h>
+#include <linux/hid.h>
+#include <linux/module.h>
+#include <linux/usb.h>
+#include <linux/kfifo.h>
+#include <asm/unaligned.h>
+#include "hid-ids.h"
+
+#define DJ_MAX_PAIRED_DEVICES 6
+#define DJ_MAX_NUMBER_NOTIFICATIONS 8
+#define DJ_RECEIVER_INDEX 0
+#define DJ_DEVICE_INDEX_MIN 1
+#define DJ_DEVICE_INDEX_MAX 6
+
+#define DJREPORT_SHORT_LENGTH 15
+#define DJREPORT_LONG_LENGTH 32
+
+#define REPORT_ID_DJ_SHORT 0x20
+#define REPORT_ID_DJ_LONG 0x21
+
+#define REPORT_ID_HIDPP_SHORT 0x10
+#define REPORT_ID_HIDPP_LONG 0x11
+
+#define HIDPP_REPORT_SHORT_LENGTH 7
+#define HIDPP_REPORT_LONG_LENGTH 20
+
+#define HIDPP_RECEIVER_INDEX 0xff
+
+#define REPORT_TYPE_RFREPORT_FIRST 0x01
+#define REPORT_TYPE_RFREPORT_LAST 0x1F
+
+/* Command Switch to DJ mode */
+#define REPORT_TYPE_CMD_SWITCH 0x80
+#define CMD_SWITCH_PARAM_DEVBITFIELD 0x00
+#define CMD_SWITCH_PARAM_TIMEOUT_SECONDS 0x01
+#define TIMEOUT_NO_KEEPALIVE 0x00
+
+/* Command to Get the list of Paired devices */
+#define REPORT_TYPE_CMD_GET_PAIRED_DEVICES 0x81
+
+/* Device Paired Notification */
+#define REPORT_TYPE_NOTIF_DEVICE_PAIRED 0x41
+#define SPFUNCTION_MORE_NOTIF_EXPECTED 0x01
+#define SPFUNCTION_DEVICE_LIST_EMPTY 0x02
+#define DEVICE_PAIRED_PARAM_SPFUNCTION 0x00
+#define DEVICE_PAIRED_PARAM_EQUAD_ID_LSB 0x01
+#define DEVICE_PAIRED_PARAM_EQUAD_ID_MSB 0x02
+#define DEVICE_PAIRED_RF_REPORT_TYPE 0x03
+
+/* Device Un-Paired Notification */
+#define REPORT_TYPE_NOTIF_DEVICE_UNPAIRED 0x40
+
+
+/* Connection Status Notification */
+#define REPORT_TYPE_NOTIF_CONNECTION_STATUS 0x42
+#define CONNECTION_STATUS_PARAM_STATUS 0x00
+#define STATUS_LINKLOSS 0x01
+
+/* Error Notification */
+#define REPORT_TYPE_NOTIF_ERROR 0x7F
+#define NOTIF_ERROR_PARAM_ETYPE 0x00
+#define ETYPE_KEEPALIVE_TIMEOUT 0x01
+
+/* supported DJ HID && RF report types */
+#define REPORT_TYPE_KEYBOARD 0x01
+#define REPORT_TYPE_MOUSE 0x02
+#define REPORT_TYPE_CONSUMER_CONTROL 0x03
+#define REPORT_TYPE_SYSTEM_CONTROL 0x04
+#define REPORT_TYPE_MEDIA_CENTER 0x08
+#define REPORT_TYPE_LEDS 0x0E
+
+/* RF Report types bitfield */
+#define STD_KEYBOARD 0x00000002
+#define STD_MOUSE 0x00000004
+#define MULTIMEDIA 0x00000008
+#define POWER_KEYS 0x00000010
+#define MEDIA_CENTER 0x00000100
+#define KBD_LEDS 0x00004000
+
+struct dj_report {
+ u8 report_id;
+ u8 device_index;
+ u8 report_type;
+ u8 report_params[DJREPORT_SHORT_LENGTH - 3];
+};
+
+struct dj_receiver_dev {
+ struct hid_device *hdev;
+ struct dj_device *paired_dj_devices[DJ_MAX_PAIRED_DEVICES +
+ DJ_DEVICE_INDEX_MIN];
+ struct work_struct work;
+ struct kfifo notif_fifo;
+ spinlock_t lock;
+ bool querying_devices;
+};
+
+struct dj_device {
+ struct hid_device *hdev;
+ struct dj_receiver_dev *dj_receiver_dev;
+ u32 reports_supported;
+ u8 device_index;
+};
+
+/* Keyboard descriptor (1) */
+static const char kbd_descriptor[] = {
+ 0x05, 0x01, /* USAGE_PAGE (generic Desktop) */
+ 0x09, 0x06, /* USAGE (Keyboard) */
+ 0xA1, 0x01, /* COLLECTION (Application) */
+ 0x85, 0x01, /* REPORT_ID (1) */
+ 0x95, 0x08, /* REPORT_COUNT (8) */
+ 0x75, 0x01, /* REPORT_SIZE (1) */
+ 0x15, 0x00, /* LOGICAL_MINIMUM (0) */
+ 0x25, 0x01, /* LOGICAL_MAXIMUM (1) */
+ 0x05, 0x07, /* USAGE_PAGE (Keyboard) */
+ 0x19, 0xE0, /* USAGE_MINIMUM (Left Control) */
+ 0x29, 0xE7, /* USAGE_MAXIMUM (Right GUI) */
+ 0x81, 0x02, /* INPUT (Data,Var,Abs) */
+ 0x95, 0x06, /* REPORT_COUNT (6) */
+ 0x75, 0x08, /* REPORT_SIZE (8) */
+ 0x15, 0x00, /* LOGICAL_MINIMUM (0) */
+ 0x26, 0xFF, 0x00, /* LOGICAL_MAXIMUM (255) */
+ 0x05, 0x07, /* USAGE_PAGE (Keyboard) */
+ 0x19, 0x00, /* USAGE_MINIMUM (no event) */
+ 0x2A, 0xFF, 0x00, /* USAGE_MAXIMUM (reserved) */
+ 0x81, 0x00, /* INPUT (Data,Ary,Abs) */
+ 0x85, 0x0e, /* REPORT_ID (14) */
+ 0x05, 0x08, /* USAGE PAGE (LED page) */
+ 0x95, 0x05, /* REPORT COUNT (5) */
+ 0x75, 0x01, /* REPORT SIZE (1) */
+ 0x15, 0x00, /* LOGICAL_MINIMUM (0) */
+ 0x25, 0x01, /* LOGICAL_MAXIMUM (1) */
+ 0x19, 0x01, /* USAGE MINIMUM (1) */
+ 0x29, 0x05, /* USAGE MAXIMUM (5) */
+ 0x91, 0x02, /* OUTPUT (Data, Variable, Absolute) */
+ 0x95, 0x01, /* REPORT COUNT (1) */
+ 0x75, 0x03, /* REPORT SIZE (3) */
+ 0x91, 0x01, /* OUTPUT (Constant) */
+ 0xC0
+};
+
+/* Mouse descriptor (2) */
+static const char mse_descriptor[] = {
+ 0x05, 0x01, /* USAGE_PAGE (Generic Desktop) */
+ 0x09, 0x02, /* USAGE (Mouse) */
+ 0xA1, 0x01, /* COLLECTION (Application) */
+ 0x85, 0x02, /* REPORT_ID = 2 */
+ 0x09, 0x01, /* USAGE (pointer) */
+ 0xA1, 0x00, /* COLLECTION (physical) */
+ 0x05, 0x09, /* USAGE_PAGE (buttons) */
+ 0x19, 0x01, /* USAGE_MIN (1) */
+ 0x29, 0x10, /* USAGE_MAX (16) */
+ 0x15, 0x00, /* LOGICAL_MIN (0) */
+ 0x25, 0x01, /* LOGICAL_MAX (1) */
+ 0x95, 0x10, /* REPORT_COUNT (16) */
+ 0x75, 0x01, /* REPORT_SIZE (1) */
+ 0x81, 0x02, /* INPUT (data var abs) */
+ 0x05, 0x01, /* USAGE_PAGE (generic desktop) */
+ 0x16, 0x01, 0xF8, /* LOGICAL_MIN (-2047) */
+ 0x26, 0xFF, 0x07, /* LOGICAL_MAX (2047) */
+ 0x75, 0x0C, /* REPORT_SIZE (12) */
+ 0x95, 0x02, /* REPORT_COUNT (2) */
+ 0x09, 0x30, /* USAGE (X) */
+ 0x09, 0x31, /* USAGE (Y) */
+ 0x81, 0x06, /* INPUT */
+ 0x15, 0x81, /* LOGICAL_MIN (-127) */
+ 0x25, 0x7F, /* LOGICAL_MAX (127) */
+ 0x75, 0x08, /* REPORT_SIZE (8) */
+ 0x95, 0x01, /* REPORT_COUNT (1) */
+ 0x09, 0x38, /* USAGE (wheel) */
+ 0x81, 0x06, /* INPUT */
+ 0x05, 0x0C, /* USAGE_PAGE(consumer) */
+ 0x0A, 0x38, 0x02, /* USAGE(AC Pan) */
+ 0x95, 0x01, /* REPORT_COUNT (1) */
+ 0x81, 0x06, /* INPUT */
+ 0xC0, /* END_COLLECTION */
+ 0xC0, /* END_COLLECTION */
+};
+
+/* Consumer Control descriptor (3) */
+static const char consumer_descriptor[] = {
+ 0x05, 0x0C, /* USAGE_PAGE (Consumer Devices) */
+ 0x09, 0x01, /* USAGE (Consumer Control) */
+ 0xA1, 0x01, /* COLLECTION (Application) */
+ 0x85, 0x03, /* REPORT_ID = 3 */
+ 0x75, 0x10, /* REPORT_SIZE (16) */
+ 0x95, 0x02, /* REPORT_COUNT (2) */
+ 0x15, 0x01, /* LOGICAL_MIN (1) */
+ 0x26, 0x8C, 0x02, /* LOGICAL_MAX (652) */
+ 0x19, 0x01, /* USAGE_MIN (1) */
+ 0x2A, 0x8C, 0x02, /* USAGE_MAX (652) */
+ 0x81, 0x00, /* INPUT (Data Ary Abs) */
+ 0xC0, /* END_COLLECTION */
+}; /* */
+
+/* System control descriptor (4) */
+static const char syscontrol_descriptor[] = {
+ 0x05, 0x01, /* USAGE_PAGE (Generic Desktop) */
+ 0x09, 0x80, /* USAGE (System Control) */
+ 0xA1, 0x01, /* COLLECTION (Application) */
+ 0x85, 0x04, /* REPORT_ID = 4 */
+ 0x75, 0x02, /* REPORT_SIZE (2) */
+ 0x95, 0x01, /* REPORT_COUNT (1) */
+ 0x15, 0x01, /* LOGICAL_MIN (1) */
+ 0x25, 0x03, /* LOGICAL_MAX (3) */
+ 0x09, 0x82, /* USAGE (System Sleep) */
+ 0x09, 0x81, /* USAGE (System Power Down) */
+ 0x09, 0x83, /* USAGE (System Wake Up) */
+ 0x81, 0x60, /* INPUT (Data Ary Abs NPrf Null) */
+ 0x75, 0x06, /* REPORT_SIZE (6) */
+ 0x81, 0x03, /* INPUT (Cnst Var Abs) */
+ 0xC0, /* END_COLLECTION */
+};
+
+/* Media descriptor (8) */
+static const char media_descriptor[] = {
+ 0x06, 0xbc, 0xff, /* Usage Page 0xffbc */
+ 0x09, 0x88, /* Usage 0x0088 */
+ 0xa1, 0x01, /* BeginCollection */
+ 0x85, 0x08, /* Report ID 8 */
+ 0x19, 0x01, /* Usage Min 0x0001 */
+ 0x29, 0xff, /* Usage Max 0x00ff */
+ 0x15, 0x01, /* Logical Min 1 */
+ 0x26, 0xff, 0x00, /* Logical Max 255 */
+ 0x75, 0x08, /* Report Size 8 */
+ 0x95, 0x01, /* Report Count 1 */
+ 0x81, 0x00, /* Input */
+ 0xc0, /* EndCollection */
+}; /* */
+
+/* HIDPP descriptor */
+static const char hidpp_descriptor[] = {
+ 0x06, 0x00, 0xff, /* Usage Page (Vendor Defined Page 1) */
+ 0x09, 0x01, /* Usage (Vendor Usage 1) */
+ 0xa1, 0x01, /* Collection (Application) */
+ 0x85, 0x10, /* Report ID (16) */
+ 0x75, 0x08, /* Report Size (8) */
+ 0x95, 0x06, /* Report Count (6) */
+ 0x15, 0x00, /* Logical Minimum (0) */
+ 0x26, 0xff, 0x00, /* Logical Maximum (255) */
+ 0x09, 0x01, /* Usage (Vendor Usage 1) */
+ 0x81, 0x00, /* Input (Data,Arr,Abs) */
+ 0x09, 0x01, /* Usage (Vendor Usage 1) */
+ 0x91, 0x00, /* Output (Data,Arr,Abs) */
+ 0xc0, /* End Collection */
+ 0x06, 0x00, 0xff, /* Usage Page (Vendor Defined Page 1) */
+ 0x09, 0x02, /* Usage (Vendor Usage 2) */
+ 0xa1, 0x01, /* Collection (Application) */
+ 0x85, 0x11, /* Report ID (17) */
+ 0x75, 0x08, /* Report Size (8) */
+ 0x95, 0x13, /* Report Count (19) */
+ 0x15, 0x00, /* Logical Minimum (0) */
+ 0x26, 0xff, 0x00, /* Logical Maximum (255) */
+ 0x09, 0x02, /* Usage (Vendor Usage 2) */
+ 0x81, 0x00, /* Input (Data,Arr,Abs) */
+ 0x09, 0x02, /* Usage (Vendor Usage 2) */
+ 0x91, 0x00, /* Output (Data,Arr,Abs) */
+ 0xc0, /* End Collection */
+ 0x06, 0x00, 0xff, /* Usage Page (Vendor Defined Page 1) */
+ 0x09, 0x04, /* Usage (Vendor Usage 0x04) */
+ 0xa1, 0x01, /* Collection (Application) */
+ 0x85, 0x20, /* Report ID (32) */
+ 0x75, 0x08, /* Report Size (8) */
+ 0x95, 0x0e, /* Report Count (14) */
+ 0x15, 0x00, /* Logical Minimum (0) */
+ 0x26, 0xff, 0x00, /* Logical Maximum (255) */
+ 0x09, 0x41, /* Usage (Vendor Usage 0x41) */
+ 0x81, 0x00, /* Input (Data,Arr,Abs) */
+ 0x09, 0x41, /* Usage (Vendor Usage 0x41) */
+ 0x91, 0x00, /* Output (Data,Arr,Abs) */
+ 0x85, 0x21, /* Report ID (33) */
+ 0x95, 0x1f, /* Report Count (31) */
+ 0x15, 0x00, /* Logical Minimum (0) */
+ 0x26, 0xff, 0x00, /* Logical Maximum (255) */
+ 0x09, 0x42, /* Usage (Vendor Usage 0x42) */
+ 0x81, 0x00, /* Input (Data,Arr,Abs) */
+ 0x09, 0x42, /* Usage (Vendor Usage 0x42) */
+ 0x91, 0x00, /* Output (Data,Arr,Abs) */
+ 0xc0, /* End Collection */
+};
+
+/* Maximum size of all defined hid reports in bytes (including report id) */
+#define MAX_REPORT_SIZE 8
+
+/* Make sure all descriptors are present here */
+#define MAX_RDESC_SIZE \
+ (sizeof(kbd_descriptor) + \
+ sizeof(mse_descriptor) + \
+ sizeof(consumer_descriptor) + \
+ sizeof(syscontrol_descriptor) + \
+ sizeof(media_descriptor) + \
+ sizeof(hidpp_descriptor))
+
+/* Number of possible hid report types that can be created by this driver.
+ *
+ * Right now, RF report types have the same report types (or report id's)
+ * than the hid report created from those RF reports. In the future
+ * this doesnt have to be true.
+ *
+ * For instance, RF report type 0x01 which has a size of 8 bytes, corresponds
+ * to hid report id 0x01, this is standard keyboard. Same thing applies to mice
+ * reports and consumer control, etc. If a new RF report is created, it doesn't
+ * has to have the same report id as its corresponding hid report, so an
+ * translation may have to take place for future report types.
+ */
+#define NUMBER_OF_HID_REPORTS 32
+static const u8 hid_reportid_size_map[NUMBER_OF_HID_REPORTS] = {
+ [1] = 8, /* Standard keyboard */
+ [2] = 8, /* Standard mouse */
+ [3] = 5, /* Consumer control */
+ [4] = 2, /* System control */
+ [8] = 2, /* Media Center */
+};
+
+
+#define LOGITECH_DJ_INTERFACE_NUMBER 0x02
+
+static struct hid_ll_driver logi_dj_ll_driver;
+
+static int logi_dj_recv_query_paired_devices(struct dj_receiver_dev *djrcv_dev);
+
+static void logi_dj_recv_destroy_djhid_device(struct dj_receiver_dev *djrcv_dev,
+ struct dj_report *dj_report)
+{
+ /* Called in delayed work context */
+ struct dj_device *dj_dev;
+ unsigned long flags;
+
+ spin_lock_irqsave(&djrcv_dev->lock, flags);
+ dj_dev = djrcv_dev->paired_dj_devices[dj_report->device_index];
+ djrcv_dev->paired_dj_devices[dj_report->device_index] = NULL;
+ spin_unlock_irqrestore(&djrcv_dev->lock, flags);
+
+ if (dj_dev != NULL) {
+ hid_destroy_device(dj_dev->hdev);
+ kfree(dj_dev);
+ } else {
+ dev_err(&djrcv_dev->hdev->dev, "%s: can't destroy a NULL device\n",
+ __func__);
+ }
+}
+
+static void logi_dj_recv_add_djhid_device(struct dj_receiver_dev *djrcv_dev,
+ struct dj_report *dj_report)
+{
+ /* Called in delayed work context */
+ struct hid_device *djrcv_hdev = djrcv_dev->hdev;
+ struct usb_interface *intf = to_usb_interface(djrcv_hdev->dev.parent);
+ struct usb_device *usbdev = interface_to_usbdev(intf);
+ struct hid_device *dj_hiddev;
+ struct dj_device *dj_dev;
+
+ /* Device index goes from 1 to 6, we need 3 bytes to store the
+ * semicolon, the index, and a null terminator
+ */
+ unsigned char tmpstr[3];
+
+ if (dj_report->report_params[DEVICE_PAIRED_PARAM_SPFUNCTION] &
+ SPFUNCTION_DEVICE_LIST_EMPTY) {
+ dbg_hid("%s: device list is empty\n", __func__);
+ djrcv_dev->querying_devices = false;
+ return;
+ }
+
+ if (djrcv_dev->paired_dj_devices[dj_report->device_index]) {
+ /* The device is already known. No need to reallocate it. */
+ dbg_hid("%s: device is already known\n", __func__);
+ return;
+ }
+
+ dj_hiddev = hid_allocate_device();
+ if (IS_ERR(dj_hiddev)) {
+ dev_err(&djrcv_hdev->dev, "%s: hid_allocate_device failed\n",
+ __func__);
+ return;
+ }
+
+ dj_hiddev->ll_driver = &logi_dj_ll_driver;
+
+ dj_hiddev->dev.parent = &djrcv_hdev->dev;
+ dj_hiddev->bus = BUS_USB;
+ dj_hiddev->vendor = le16_to_cpu(usbdev->descriptor.idVendor);
+ dj_hiddev->product =
+ (dj_report->report_params[DEVICE_PAIRED_PARAM_EQUAD_ID_MSB]
+ << 8) |
+ dj_report->report_params[DEVICE_PAIRED_PARAM_EQUAD_ID_LSB];
+ snprintf(dj_hiddev->name, sizeof(dj_hiddev->name),
+ "Logitech Unifying Device. Wireless PID:%04x",
+ dj_hiddev->product);
+
+ dj_hiddev->group = HID_GROUP_LOGITECH_DJ_DEVICE;
+
+ usb_make_path(usbdev, dj_hiddev->phys, sizeof(dj_hiddev->phys));
+ snprintf(tmpstr, sizeof(tmpstr), ":%d", dj_report->device_index);
+ strlcat(dj_hiddev->phys, tmpstr, sizeof(dj_hiddev->phys));
+
+ dj_dev = kzalloc(sizeof(struct dj_device), GFP_KERNEL);
+
+ if (!dj_dev) {
+ dev_err(&djrcv_hdev->dev, "%s: failed allocating dj_device\n",
+ __func__);
+ goto dj_device_allocate_fail;
+ }
+
+ dj_dev->reports_supported = get_unaligned_le32(
+ dj_report->report_params + DEVICE_PAIRED_RF_REPORT_TYPE);
+ dj_dev->hdev = dj_hiddev;
+ dj_dev->dj_receiver_dev = djrcv_dev;
+ dj_dev->device_index = dj_report->device_index;
+ dj_hiddev->driver_data = dj_dev;
+
+ djrcv_dev->paired_dj_devices[dj_report->device_index] = dj_dev;
+
+ if (hid_add_device(dj_hiddev)) {
+ dev_err(&djrcv_hdev->dev, "%s: failed adding dj_device\n",
+ __func__);
+ goto hid_add_device_fail;
+ }
+
+ return;
+
+hid_add_device_fail:
+ djrcv_dev->paired_dj_devices[dj_report->device_index] = NULL;
+ kfree(dj_dev);
+dj_device_allocate_fail:
+ hid_destroy_device(dj_hiddev);
+}
+
+static void delayedwork_callback(struct work_struct *work)
+{
+ struct dj_receiver_dev *djrcv_dev =
+ container_of(work, struct dj_receiver_dev, work);
+
+ struct dj_report dj_report;
+ unsigned long flags;
+ int count;
+ int retval;
+
+ dbg_hid("%s\n", __func__);
+
+ spin_lock_irqsave(&djrcv_dev->lock, flags);
+
+ count = kfifo_out(&djrcv_dev->notif_fifo, &dj_report,
+ sizeof(struct dj_report));
+
+ if (count != sizeof(struct dj_report)) {
+ dev_err(&djrcv_dev->hdev->dev, "%s: workitem triggered without "
+ "notifications available\n", __func__);
+ spin_unlock_irqrestore(&djrcv_dev->lock, flags);
+ return;
+ }
+
+ if (!kfifo_is_empty(&djrcv_dev->notif_fifo)) {
+ if (schedule_work(&djrcv_dev->work) == 0) {
+ dbg_hid("%s: did not schedule the work item, was "
+ "already queued\n", __func__);
+ }
+ }
+
+ spin_unlock_irqrestore(&djrcv_dev->lock, flags);
+
+ switch (dj_report.report_type) {
+ case REPORT_TYPE_NOTIF_DEVICE_PAIRED:
+ logi_dj_recv_add_djhid_device(djrcv_dev, &dj_report);
+ break;
+ case REPORT_TYPE_NOTIF_DEVICE_UNPAIRED:
+ logi_dj_recv_destroy_djhid_device(djrcv_dev, &dj_report);
+ break;
+ default:
+ /* A normal report (i. e. not belonging to a pair/unpair notification)
+ * arriving here, means that the report arrived but we did not have a
+ * paired dj_device associated to the report's device_index, this
+ * means that the original "device paired" notification corresponding
+ * to this dj_device never arrived to this driver. The reason is that
+ * hid-core discards all packets coming from a device while probe() is
+ * executing. */
+ if (!djrcv_dev->paired_dj_devices[dj_report.device_index]) {
+ /* ok, we don't know the device, just re-ask the
+ * receiver for the list of connected devices. */
+ retval = logi_dj_recv_query_paired_devices(djrcv_dev);
+ if (!retval) {
+ /* everything went fine, so just leave */
+ break;
+ }
+ dev_err(&djrcv_dev->hdev->dev,
+ "%s:logi_dj_recv_query_paired_devices "
+ "error:%d\n", __func__, retval);
+ }
+ dbg_hid("%s: unexpected report type\n", __func__);
+ }
+}
+
+static void logi_dj_recv_queue_notification(struct dj_receiver_dev *djrcv_dev,
+ struct dj_report *dj_report)
+{
+ /* We are called from atomic context (tasklet && djrcv->lock held) */
+
+ kfifo_in(&djrcv_dev->notif_fifo, dj_report, sizeof(struct dj_report));
+
+ if (schedule_work(&djrcv_dev->work) == 0) {
+ dbg_hid("%s: did not schedule the work item, was already "
+ "queued\n", __func__);
+ }
+}
+
+static void logi_dj_recv_forward_null_report(struct dj_receiver_dev *djrcv_dev,
+ struct dj_report *dj_report)
+{
+ /* We are called from atomic context (tasklet && djrcv->lock held) */
+ unsigned int i;
+ u8 reportbuffer[MAX_REPORT_SIZE];
+ struct dj_device *djdev;
+
+ djdev = djrcv_dev->paired_dj_devices[dj_report->device_index];
+
+ memset(reportbuffer, 0, sizeof(reportbuffer));
+
+ for (i = 0; i < NUMBER_OF_HID_REPORTS; i++) {
+ if (djdev->reports_supported & (1 << i)) {
+ reportbuffer[0] = i;
+ if (hid_input_report(djdev->hdev,
+ HID_INPUT_REPORT,
+ reportbuffer,
+ hid_reportid_size_map[i], 1)) {
+ dbg_hid("hid_input_report error sending null "
+ "report\n");
+ }
+ }
+ }
+}
+
+static void logi_dj_recv_forward_report(struct dj_receiver_dev *djrcv_dev,
+ struct dj_report *dj_report)
+{
+ /* We are called from atomic context (tasklet && djrcv->lock held) */
+ struct dj_device *dj_device;
+
+ dj_device = djrcv_dev->paired_dj_devices[dj_report->device_index];
+
+ if ((dj_report->report_type > ARRAY_SIZE(hid_reportid_size_map) - 1) ||
+ (hid_reportid_size_map[dj_report->report_type] == 0)) {
+ dbg_hid("invalid report type:%x\n", dj_report->report_type);
+ return;
+ }
+
+ if (hid_input_report(dj_device->hdev,
+ HID_INPUT_REPORT, &dj_report->report_type,
+ hid_reportid_size_map[dj_report->report_type], 1)) {
+ dbg_hid("hid_input_report error\n");
+ }
+}
+
+static void logi_dj_recv_forward_hidpp(struct dj_device *dj_dev, u8 *data,
+ int size)
+{
+ /* We are called from atomic context (tasklet && djrcv->lock held) */
+ if (hid_input_report(dj_dev->hdev, HID_INPUT_REPORT, data, size, 1))
+ dbg_hid("hid_input_report error\n");
+}
+
+static int logi_dj_recv_send_report(struct dj_receiver_dev *djrcv_dev,
+ struct dj_report *dj_report)
+{
+ struct hid_device *hdev = djrcv_dev->hdev;
+ struct hid_report *report;
+ struct hid_report_enum *output_report_enum;
+ u8 *data = (u8 *)(&dj_report->device_index);
+ unsigned int i;
+
+ output_report_enum = &hdev->report_enum[HID_OUTPUT_REPORT];
+ report = output_report_enum->report_id_hash[REPORT_ID_DJ_SHORT];
+
+ if (!report) {
+ dev_err(&hdev->dev, "%s: unable to find dj report\n", __func__);
+ return -ENODEV;
+ }
+
+ for (i = 0; i < DJREPORT_SHORT_LENGTH - 1; i++)
+ report->field[0]->value[i] = data[i];
+
+ hid_hw_request(hdev, report, HID_REQ_SET_REPORT);
+
+ return 0;
+}
+
+static int logi_dj_recv_query_paired_devices(struct dj_receiver_dev *djrcv_dev)
+{
+ struct dj_report *dj_report;
+ int retval;
+
+ /* no need to protect djrcv_dev->querying_devices */
+ if (djrcv_dev->querying_devices)
+ return 0;
+
+ dj_report = kzalloc(sizeof(struct dj_report), GFP_KERNEL);
+ if (!dj_report)
+ return -ENOMEM;
+ dj_report->report_id = REPORT_ID_DJ_SHORT;
+ dj_report->device_index = 0xFF;
+ dj_report->report_type = REPORT_TYPE_CMD_GET_PAIRED_DEVICES;
+ retval = logi_dj_recv_send_report(djrcv_dev, dj_report);
+ kfree(dj_report);
+ return retval;
+}
+
+
+static int logi_dj_recv_switch_to_dj_mode(struct dj_receiver_dev *djrcv_dev,
+ unsigned timeout)
+{
+ struct hid_device *hdev = djrcv_dev->hdev;
+ struct dj_report *dj_report;
+ u8 *buf;
+ int retval;
+
+ dj_report = kzalloc(sizeof(struct dj_report), GFP_KERNEL);
+ if (!dj_report)
+ return -ENOMEM;
+ dj_report->report_id = REPORT_ID_DJ_SHORT;
+ dj_report->device_index = 0xFF;
+ dj_report->report_type = REPORT_TYPE_CMD_SWITCH;
+ dj_report->report_params[CMD_SWITCH_PARAM_DEVBITFIELD] = 0x3F;
+ dj_report->report_params[CMD_SWITCH_PARAM_TIMEOUT_SECONDS] = (u8)timeout;
+ retval = logi_dj_recv_send_report(djrcv_dev, dj_report);
+
+ /*
+ * Ugly sleep to work around a USB 3.0 bug when the receiver is still
+ * processing the "switch-to-dj" command while we send an other command.
+ * 50 msec should gives enough time to the receiver to be ready.
+ */
+ msleep(50);
+
+ /*
+ * Magical bits to set up hidpp notifications when the dj devices
+ * are connected/disconnected.
+ *
+ * We can reuse dj_report because HIDPP_REPORT_SHORT_LENGTH is smaller
+ * than DJREPORT_SHORT_LENGTH.
+ */
+ buf = (u8 *)dj_report;
+
+ memset(buf, 0, HIDPP_REPORT_SHORT_LENGTH);
+
+ buf[0] = REPORT_ID_HIDPP_SHORT;
+ buf[1] = 0xFF;
+ buf[2] = 0x80;
+ buf[3] = 0x00;
+ buf[4] = 0x00;
+ buf[5] = 0x09;
+ buf[6] = 0x00;
+
+ hid_hw_raw_request(hdev, REPORT_ID_HIDPP_SHORT, buf,
+ HIDPP_REPORT_SHORT_LENGTH, HID_OUTPUT_REPORT,
+ HID_REQ_SET_REPORT);
+
+ kfree(dj_report);
+ return retval;
+}
+
+
+static int logi_dj_ll_open(struct hid_device *hid)
+{
+ dbg_hid("%s:%s\n", __func__, hid->phys);
+ return 0;
+
+}
+
+static void logi_dj_ll_close(struct hid_device *hid)
+{
+ dbg_hid("%s:%s\n", __func__, hid->phys);
+}
+
+/*
+ * Register 0xB5 is "pairing information". It is solely intended for the
+ * receiver, so do not overwrite the device index.
+ */
+static u8 unifying_pairing_query[] = {0x10, 0xff, 0x83, 0xb5};
+static u8 unifying_pairing_answer[] = {0x11, 0xff, 0x83, 0xb5};
+
+static int logi_dj_ll_raw_request(struct hid_device *hid,
+ unsigned char reportnum, __u8 *buf,
+ size_t count, unsigned char report_type,
+ int reqtype)
+{
+ struct dj_device *djdev = hid->driver_data;
+ struct dj_receiver_dev *djrcv_dev = djdev->dj_receiver_dev;
+ u8 *out_buf;
+ int ret;
+
+ if ((buf[0] == REPORT_ID_HIDPP_SHORT) ||
+ (buf[0] == REPORT_ID_HIDPP_LONG)) {
+ if (count < 2)
+ return -EINVAL;
+
+ /* special case where we should not overwrite
+ * the device_index */
+ if (count == 7 && !memcmp(buf, unifying_pairing_query,
+ sizeof(unifying_pairing_query)))
+ buf[4] = (buf[4] & 0xf0) | (djdev->device_index - 1);
+ else
+ buf[1] = djdev->device_index;
+ return hid_hw_raw_request(djrcv_dev->hdev, reportnum, buf,
+ count, report_type, reqtype);
+ }
+
+ if (buf[0] != REPORT_TYPE_LEDS)
+ return -EINVAL;
+
+ out_buf = kzalloc(DJREPORT_SHORT_LENGTH, GFP_ATOMIC);
+ if (!out_buf)
+ return -ENOMEM;
+
+ if (count > DJREPORT_SHORT_LENGTH - 2)
+ count = DJREPORT_SHORT_LENGTH - 2;
+
+ out_buf[0] = REPORT_ID_DJ_SHORT;
+ out_buf[1] = djdev->device_index;
+ memcpy(out_buf + 2, buf, count);
+
+ ret = hid_hw_raw_request(djrcv_dev->hdev, out_buf[0], out_buf,
+ DJREPORT_SHORT_LENGTH, report_type, reqtype);
+
+ kfree(out_buf);
+ return ret;
+}
+
+static void rdcat(char *rdesc, unsigned int *rsize, const char *data, unsigned int size)
+{
+ memcpy(rdesc + *rsize, data, size);
+ *rsize += size;
+}
+
+static int logi_dj_ll_parse(struct hid_device *hid)
+{
+ struct dj_device *djdev = hid->driver_data;
+ unsigned int rsize = 0;
+ char *rdesc;
+ int retval;
+
+ dbg_hid("%s\n", __func__);
+
+ djdev->hdev->version = 0x0111;
+ djdev->hdev->country = 0x00;
+
+ rdesc = kmalloc(MAX_RDESC_SIZE, GFP_KERNEL);
+ if (!rdesc)
+ return -ENOMEM;
+
+ if (djdev->reports_supported & STD_KEYBOARD) {
+ dbg_hid("%s: sending a kbd descriptor, reports_supported: %x\n",
+ __func__, djdev->reports_supported);
+ rdcat(rdesc, &rsize, kbd_descriptor, sizeof(kbd_descriptor));
+ }
+
+ if (djdev->reports_supported & STD_MOUSE) {
+ dbg_hid("%s: sending a mouse descriptor, reports_supported: "
+ "%x\n", __func__, djdev->reports_supported);
+ rdcat(rdesc, &rsize, mse_descriptor, sizeof(mse_descriptor));
+ }
+
+ if (djdev->reports_supported & MULTIMEDIA) {
+ dbg_hid("%s: sending a multimedia report descriptor: %x\n",
+ __func__, djdev->reports_supported);
+ rdcat(rdesc, &rsize, consumer_descriptor, sizeof(consumer_descriptor));
+ }
+
+ if (djdev->reports_supported & POWER_KEYS) {
+ dbg_hid("%s: sending a power keys report descriptor: %x\n",
+ __func__, djdev->reports_supported);
+ rdcat(rdesc, &rsize, syscontrol_descriptor, sizeof(syscontrol_descriptor));
+ }
+
+ if (djdev->reports_supported & MEDIA_CENTER) {
+ dbg_hid("%s: sending a media center report descriptor: %x\n",
+ __func__, djdev->reports_supported);
+ rdcat(rdesc, &rsize, media_descriptor, sizeof(media_descriptor));
+ }
+
+ if (djdev->reports_supported & KBD_LEDS) {
+ dbg_hid("%s: need to send kbd leds report descriptor: %x\n",
+ __func__, djdev->reports_supported);
+ }
+
+ rdcat(rdesc, &rsize, hidpp_descriptor, sizeof(hidpp_descriptor));
+
+ retval = hid_parse_report(hid, rdesc, rsize);
+ kfree(rdesc);
+
+ return retval;
+}
+
+static int logi_dj_ll_start(struct hid_device *hid)
+{
+ dbg_hid("%s\n", __func__);
+ return 0;
+}
+
+static void logi_dj_ll_stop(struct hid_device *hid)
+{
+ dbg_hid("%s\n", __func__);
+}
+
+
+static struct hid_ll_driver logi_dj_ll_driver = {
+ .parse = logi_dj_ll_parse,
+ .start = logi_dj_ll_start,
+ .stop = logi_dj_ll_stop,
+ .open = logi_dj_ll_open,
+ .close = logi_dj_ll_close,
+ .raw_request = logi_dj_ll_raw_request,
+};
+
+static int logi_dj_dj_event(struct hid_device *hdev,
+ struct hid_report *report, u8 *data,
+ int size)
+{
+ struct dj_receiver_dev *djrcv_dev = hid_get_drvdata(hdev);
+ struct dj_report *dj_report = (struct dj_report *) data;
+ unsigned long flags;
+
+ /*
+ * Here we receive all data coming from iface 2, there are 3 cases:
+ *
+ * 1) Data is intended for this driver i. e. data contains arrival,
+ * departure, etc notifications, in which case we queue them for delayed
+ * processing by the work queue. We return 1 to hid-core as no further
+ * processing is required from it.
+ *
+ * 2) Data informs a connection change, if the change means rf link
+ * loss, then we must send a null report to the upper layer to discard
+ * potentially pressed keys that may be repeated forever by the input
+ * layer. Return 1 to hid-core as no further processing is required.
+ *
+ * 3) Data is an actual input event from a paired DJ device in which
+ * case we forward it to the correct hid device (via hid_input_report()
+ * ) and return 1 so hid-core does not anything else with it.
+ */
+
+ if ((dj_report->device_index < DJ_DEVICE_INDEX_MIN) ||
+ (dj_report->device_index > DJ_DEVICE_INDEX_MAX)) {
+ /*
+ * Device index is wrong, bail out.
+ * This driver can ignore safely the receiver notifications,
+ * so ignore those reports too.
+ */
+ if (dj_report->device_index != DJ_RECEIVER_INDEX)
+ dev_err(&hdev->dev, "%s: invalid device index:%d\n",
+ __func__, dj_report->device_index);
+ return false;
+ }
+
+ spin_lock_irqsave(&djrcv_dev->lock, flags);
+
+ if (!djrcv_dev->paired_dj_devices[dj_report->device_index]) {
+ /* received an event for an unknown device, bail out */
+ logi_dj_recv_queue_notification(djrcv_dev, dj_report);
+ goto out;
+ }
+
+ switch (dj_report->report_type) {
+ case REPORT_TYPE_NOTIF_DEVICE_PAIRED:
+ /* pairing notifications are handled above the switch */
+ break;
+ case REPORT_TYPE_NOTIF_DEVICE_UNPAIRED:
+ logi_dj_recv_queue_notification(djrcv_dev, dj_report);
+ break;
+ case REPORT_TYPE_NOTIF_CONNECTION_STATUS:
+ if (dj_report->report_params[CONNECTION_STATUS_PARAM_STATUS] ==
+ STATUS_LINKLOSS) {
+ logi_dj_recv_forward_null_report(djrcv_dev, dj_report);
+ }
+ break;
+ default:
+ logi_dj_recv_forward_report(djrcv_dev, dj_report);
+ }
+
+out:
+ spin_unlock_irqrestore(&djrcv_dev->lock, flags);
+
+ return true;
+}
+
+static int logi_dj_hidpp_event(struct hid_device *hdev,
+ struct hid_report *report, u8 *data,
+ int size)
+{
+ struct dj_receiver_dev *djrcv_dev = hid_get_drvdata(hdev);
+ struct dj_report *dj_report = (struct dj_report *) data;
+ unsigned long flags;
+ u8 device_index = dj_report->device_index;
+
+ if (device_index == HIDPP_RECEIVER_INDEX) {
+ /* special case were the device wants to know its unifying
+ * name */
+ if (size == HIDPP_REPORT_LONG_LENGTH &&
+ !memcmp(data, unifying_pairing_answer,
+ sizeof(unifying_pairing_answer)))
+ device_index = (data[4] & 0x0F) + 1;
+ else
+ return false;
+ }
+
+ /*
+ * Data is from the HID++ collection, in this case, we forward the
+ * data to the corresponding child dj device and return 0 to hid-core
+ * so he data also goes to the hidraw device of the receiver. This
+ * allows a user space application to implement the full HID++ routing
+ * via the receiver.
+ */
+
+ if ((device_index < DJ_DEVICE_INDEX_MIN) ||
+ (device_index > DJ_DEVICE_INDEX_MAX)) {
+ /*
+ * Device index is wrong, bail out.
+ * This driver can ignore safely the receiver notifications,
+ * so ignore those reports too.
+ */
+ dev_err(&hdev->dev, "%s: invalid device index:%d\n",
+ __func__, dj_report->device_index);
+ return false;
+ }
+
+ spin_lock_irqsave(&djrcv_dev->lock, flags);
+
+ if (!djrcv_dev->paired_dj_devices[device_index])
+ /* received an event for an unknown device, bail out */
+ goto out;
+
+ logi_dj_recv_forward_hidpp(djrcv_dev->paired_dj_devices[device_index],
+ data, size);
+
+out:
+ spin_unlock_irqrestore(&djrcv_dev->lock, flags);
+
+ return false;
+}
+
+static int logi_dj_raw_event(struct hid_device *hdev,
+ struct hid_report *report, u8 *data,
+ int size)
+{
+ dbg_hid("%s, size:%d\n", __func__, size);
+
+ switch (data[0]) {
+ case REPORT_ID_DJ_SHORT:
+ if (size != DJREPORT_SHORT_LENGTH) {
+ dev_err(&hdev->dev, "DJ report of bad size (%d)", size);
+ return false;
+ }
+ return logi_dj_dj_event(hdev, report, data, size);
+ case REPORT_ID_HIDPP_SHORT:
+ if (size != HIDPP_REPORT_SHORT_LENGTH) {
+ dev_err(&hdev->dev,
+ "Short HID++ report of bad size (%d)", size);
+ return false;
+ }
+ return logi_dj_hidpp_event(hdev, report, data, size);
+ case REPORT_ID_HIDPP_LONG:
+ if (size != HIDPP_REPORT_LONG_LENGTH) {
+ dev_err(&hdev->dev,
+ "Long HID++ report of bad size (%d)", size);
+ return false;
+ }
+ return logi_dj_hidpp_event(hdev, report, data, size);
+ }
+
+ return false;
+}
+
+static int logi_dj_probe(struct hid_device *hdev,
+ const struct hid_device_id *id)
+{
+ struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
+ struct dj_receiver_dev *djrcv_dev;
+ int retval;
+
+ dbg_hid("%s called for ifnum %d\n", __func__,
+ intf->cur_altsetting->desc.bInterfaceNumber);
+
+ /* Ignore interfaces 0 and 1, they will not carry any data, dont create
+ * any hid_device for them */
+ if (intf->cur_altsetting->desc.bInterfaceNumber !=
+ LOGITECH_DJ_INTERFACE_NUMBER) {
+ dbg_hid("%s: ignoring ifnum %d\n", __func__,
+ intf->cur_altsetting->desc.bInterfaceNumber);
+ return -ENODEV;
+ }
+
+ /* Treat interface 2 */
+
+ djrcv_dev = kzalloc(sizeof(struct dj_receiver_dev), GFP_KERNEL);
+ if (!djrcv_dev) {
+ dev_err(&hdev->dev,
+ "%s:failed allocating dj_receiver_dev\n", __func__);
+ return -ENOMEM;
+ }
+ djrcv_dev->hdev = hdev;
+ INIT_WORK(&djrcv_dev->work, delayedwork_callback);
+ spin_lock_init(&djrcv_dev->lock);
+ if (kfifo_alloc(&djrcv_dev->notif_fifo,
+ DJ_MAX_NUMBER_NOTIFICATIONS * sizeof(struct dj_report),
+ GFP_KERNEL)) {
+ dev_err(&hdev->dev,
+ "%s:failed allocating notif_fifo\n", __func__);
+ kfree(djrcv_dev);
+ return -ENOMEM;
+ }
+ hid_set_drvdata(hdev, djrcv_dev);
+
+ /* Call to usbhid to fetch the HID descriptors of interface 2 and
+ * subsequently call to the hid/hid-core to parse the fetched
+ * descriptors, this will in turn create the hidraw and hiddev nodes
+ * for interface 2 of the receiver */
+ retval = hid_parse(hdev);
+ if (retval) {
+ dev_err(&hdev->dev,
+ "%s:parse of interface 2 failed\n", __func__);
+ goto hid_parse_fail;
+ }
+
+ if (!hid_validate_values(hdev, HID_OUTPUT_REPORT, REPORT_ID_DJ_SHORT,
+ 0, DJREPORT_SHORT_LENGTH - 1)) {
+ retval = -ENODEV;
+ goto hid_parse_fail;
+ }
+
+ /* Starts the usb device and connects to upper interfaces hiddev and
+ * hidraw */
+ retval = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
+ if (retval) {
+ dev_err(&hdev->dev,
+ "%s:hid_hw_start returned error\n", __func__);
+ goto hid_hw_start_fail;
+ }
+
+ retval = logi_dj_recv_switch_to_dj_mode(djrcv_dev, 0);
+ if (retval < 0) {
+ dev_err(&hdev->dev,
+ "%s:logi_dj_recv_switch_to_dj_mode returned error:%d\n",
+ __func__, retval);
+ goto switch_to_dj_mode_fail;
+ }
+
+ /* This is enabling the polling urb on the IN endpoint */
+ retval = hid_hw_open(hdev);
+ if (retval < 0) {
+ dev_err(&hdev->dev, "%s:hid_hw_open returned error:%d\n",
+ __func__, retval);
+ goto llopen_failed;
+ }
+
+ /* Allow incoming packets to arrive: */
+ hid_device_io_start(hdev);
+
+ retval = logi_dj_recv_query_paired_devices(djrcv_dev);
+ if (retval < 0) {
+ dev_err(&hdev->dev, "%s:logi_dj_recv_query_paired_devices "
+ "error:%d\n", __func__, retval);
+ goto logi_dj_recv_query_paired_devices_failed;
+ }
+
+ return retval;
+
+logi_dj_recv_query_paired_devices_failed:
+ hid_hw_close(hdev);
+
+llopen_failed:
+switch_to_dj_mode_fail:
+ hid_hw_stop(hdev);
+
+hid_hw_start_fail:
+hid_parse_fail:
+ kfifo_free(&djrcv_dev->notif_fifo);
+ kfree(djrcv_dev);
+ hid_set_drvdata(hdev, NULL);
+ return retval;
+
+}
+
+#ifdef CONFIG_PM
+static int logi_dj_reset_resume(struct hid_device *hdev)
+{
+ int retval;
+ struct dj_receiver_dev *djrcv_dev = hid_get_drvdata(hdev);
+
+ retval = logi_dj_recv_switch_to_dj_mode(djrcv_dev, 0);
+ if (retval < 0) {
+ dev_err(&hdev->dev,
+ "%s:logi_dj_recv_switch_to_dj_mode returned error:%d\n",
+ __func__, retval);
+ }
+
+ return 0;
+}
+#endif
+
+static void logi_dj_remove(struct hid_device *hdev)
+{
+ struct dj_receiver_dev *djrcv_dev = hid_get_drvdata(hdev);
+ struct dj_device *dj_dev;
+ int i;
+
+ dbg_hid("%s\n", __func__);
+
+ cancel_work_sync(&djrcv_dev->work);
+
+ hid_hw_close(hdev);
+ hid_hw_stop(hdev);
+
+ /* I suppose that at this point the only context that can access
+ * the djrecv_data is this thread as the work item is guaranteed to
+ * have finished and no more raw_event callbacks should arrive after
+ * the remove callback was triggered so no locks are put around the
+ * code below */
+ for (i = 0; i < (DJ_MAX_PAIRED_DEVICES + DJ_DEVICE_INDEX_MIN); i++) {
+ dj_dev = djrcv_dev->paired_dj_devices[i];
+ if (dj_dev != NULL) {
+ hid_destroy_device(dj_dev->hdev);
+ kfree(dj_dev);
+ djrcv_dev->paired_dj_devices[i] = NULL;
+ }
+ }
+
+ kfifo_free(&djrcv_dev->notif_fifo);
+ kfree(djrcv_dev);
+ hid_set_drvdata(hdev, NULL);
+}
+
+static const struct hid_device_id logi_dj_receivers[] = {
+ {HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH,
+ USB_DEVICE_ID_LOGITECH_UNIFYING_RECEIVER)},
+ {HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH,
+ USB_DEVICE_ID_LOGITECH_UNIFYING_RECEIVER_2)},
+ {}
+};
+
+MODULE_DEVICE_TABLE(hid, logi_dj_receivers);
+
+static struct hid_driver logi_djreceiver_driver = {
+ .name = "logitech-djreceiver",
+ .id_table = logi_dj_receivers,
+ .probe = logi_dj_probe,
+ .remove = logi_dj_remove,
+ .raw_event = logi_dj_raw_event,
+#ifdef CONFIG_PM
+ .reset_resume = logi_dj_reset_resume,
+#endif
+};
+
+module_hid_driver(logi_djreceiver_driver);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Logitech");
+MODULE_AUTHOR("Nestor Lopez Casado");
+MODULE_AUTHOR("nlopezcasad@logitech.com");