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linux/drivers/hid/hid-logitech-dj.c
Filipe Laíns c08ce25503 HID: logitech: drop outdated references to unifying receivers 
The hid-logitech-{dj,hidpp} were originally developed for unifying
receivers but since then they have evolved and now support other types
of receivers and devices. This patch adjusts the original descriptions
with this in mind.

Signed-off-by: Filipe Laíns <lains@archlinux.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2020-04-06 11:38:35 +02:00

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// SPDX-License-Identifier: GPL-2.0-only
/*
* HID driver for Logitech receivers
*
* Copyright (c) 2011 Logitech
*/
#include <linux/device.h>
#include <linux/hid.h>
#include <linux/module.h>
#include <linux/kfifo.h>
#include <linux/delay.h>
#include <linux/usb.h> /* For to_usb_interface for kvm extra intf check */
#include <asm/unaligned.h>
#include "hid-ids.h"
#define DJ_MAX_PAIRED_DEVICES 7
#define DJ_MAX_NUMBER_NOTIFS 8
#define DJ_RECEIVER_INDEX 0
#define DJ_DEVICE_INDEX_MIN 1
#define DJ_DEVICE_INDEX_MAX 7
#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 REPORT_ID_HIDPP_VERY_LONG 0x12
#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 BIT(1)
#define STD_MOUSE BIT(2)
#define MULTIMEDIA BIT(3)
#define POWER_KEYS BIT(4)
#define MEDIA_CENTER BIT(8)
#define KBD_LEDS BIT(14)
/* Fake (bitnr > NUMBER_OF_HID_REPORTS) bit to track HID++ capability */
#define HIDPP BIT_ULL(63)
/* HID++ Device Connected Notification */
#define REPORT_TYPE_NOTIF_DEVICE_CONNECTED 0x41
#define HIDPP_PARAM_PROTO_TYPE 0x00
#define HIDPP_PARAM_DEVICE_INFO 0x01
#define HIDPP_PARAM_EQUAD_LSB 0x02
#define HIDPP_PARAM_EQUAD_MSB 0x03
#define HIDPP_PARAM_27MHZ_DEVID 0x03
#define HIDPP_DEVICE_TYPE_MASK GENMASK(3, 0)
#define HIDPP_LINK_STATUS_MASK BIT(6)
#define HIDPP_MANUFACTURER_MASK BIT(7)
#define HIDPP_DEVICE_TYPE_KEYBOARD 1
#define HIDPP_DEVICE_TYPE_MOUSE 2
#define HIDPP_SET_REGISTER 0x80
#define HIDPP_GET_LONG_REGISTER 0x83
#define HIDPP_REG_CONNECTION_STATE 0x02
#define HIDPP_REG_PAIRING_INFORMATION 0xB5
#define HIDPP_PAIRING_INFORMATION 0x20
#define HIDPP_FAKE_DEVICE_ARRIVAL 0x02
enum recvr_type {
recvr_type_dj,
recvr_type_hidpp,
recvr_type_gaming_hidpp,
recvr_type_mouse_only,
recvr_type_27mhz,
recvr_type_bluetooth,
};
struct dj_report {
u8 report_id;
u8 device_index;
u8 report_type;
u8 report_params[DJREPORT_SHORT_LENGTH - 3];
};
struct hidpp_event {
u8 report_id;
u8 device_index;
u8 sub_id;
u8 params[HIDPP_REPORT_LONG_LENGTH - 3U];
} __packed;
struct dj_receiver_dev {
struct hid_device *mouse;
struct hid_device *keyboard;
struct hid_device *hidpp;
struct dj_device *paired_dj_devices[DJ_MAX_PAIRED_DEVICES +
DJ_DEVICE_INDEX_MIN];
struct list_head list;
struct kref kref;
struct work_struct work;
struct kfifo notif_fifo;
unsigned long last_query; /* in jiffies */
bool ready;
enum recvr_type type;
unsigned int unnumbered_application;
spinlock_t lock;
};
struct dj_device {
struct hid_device *hdev;
struct dj_receiver_dev *dj_receiver_dev;
u64 reports_supported;
u8 device_index;
};
#define WORKITEM_TYPE_EMPTY 0
#define WORKITEM_TYPE_PAIRED 1
#define WORKITEM_TYPE_UNPAIRED 2
#define WORKITEM_TYPE_UNKNOWN 255
struct dj_workitem {
u8 type; /* WORKITEM_TYPE_* */
u8 device_index;
u8 device_type;
u8 quad_id_msb;
u8 quad_id_lsb;
u64 reports_supported;
};
/* 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 */
};
/* Mouse descriptor (2) for 27 MHz receiver, only 8 buttons */
static const char mse_27mhz_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, 0x08, /* USAGE_MAX (8) */
0x15, 0x00, /* LOGICAL_MIN (0) */
0x25, 0x01, /* LOGICAL_MAX (1) */
0x95, 0x08, /* REPORT_COUNT (8) */
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 */
};
/* Mouse descriptor (2) for Bluetooth receiver, low-res hwheel, 12 buttons */
static const char mse_bluetooth_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, 0x08, /* USAGE_MAX (8) */
0x15, 0x00, /* LOGICAL_MIN (0) */
0x25, 0x01, /* LOGICAL_MAX (1) */
0x95, 0x08, /* REPORT_COUNT (8) */
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) */
0x15, 0xF9, /* LOGICAL_MIN (-7) */
0x25, 0x07, /* LOGICAL_MAX (7) */
0x75, 0x04, /* REPORT_SIZE (4) */
0x95, 0x01, /* REPORT_COUNT (1) */
0x81, 0x06, /* INPUT */
0x05, 0x09, /* USAGE_PAGE (buttons) */
0x19, 0x09, /* USAGE_MIN (9) */
0x29, 0x0C, /* USAGE_MAX (12) */
0x15, 0x00, /* LOGICAL_MIN (0) */
0x25, 0x01, /* LOGICAL_MAX (1) */
0x75, 0x01, /* REPORT_SIZE (1) */
0x95, 0x04, /* REPORT_COUNT (4) */
0x81, 0x06, /* INPUT */
0xC0, /* END_COLLECTION */
0xC0, /* END_COLLECTION */
};
/* Gaming Mouse descriptor (2) */
static const char mse_high_res_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, 0x80, /* LOGICAL_MIN (-32767) */
0x26, 0xFF, 0x7F, /* LOGICAL_MAX (32767) */
0x75, 0x10, /* REPORT_SIZE (16) */
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, 0xFF, 0x02, /* LOGICAL_MAX (767) */
0x19, 0x01, /* USAGE_MIN (1) */
0x2A, 0xFF, 0x02, /* USAGE_MAX (767) */
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_bluetooth_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 delayedwork_callback(struct work_struct *work);
static LIST_HEAD(dj_hdev_list);
static DEFINE_MUTEX(dj_hdev_list_lock);
/*
* dj/HID++ receivers are really a single logical entity, but for BIOS/Windows
* compatibility they have multiple USB interfaces. On HID++ receivers we need
* to listen for input reports on both interfaces. The functions below are used
* to create a single struct dj_receiver_dev for all interfaces belonging to
* a single USB-device / receiver.
*/
static struct dj_receiver_dev *dj_find_receiver_dev(struct hid_device *hdev,
enum recvr_type type)
{
struct dj_receiver_dev *djrcv_dev;
char sep;
/*
* The bluetooth receiver contains a built-in hub and has separate
* USB-devices for the keyboard and mouse interfaces.
*/
sep = (type == recvr_type_bluetooth) ? '.' : '/';
/* Try to find an already-probed interface from the same device */
list_for_each_entry(djrcv_dev, &dj_hdev_list, list) {
if (djrcv_dev->mouse &&
hid_compare_device_paths(hdev, djrcv_dev->mouse, sep)) {
kref_get(&djrcv_dev->kref);
return djrcv_dev;
}
if (djrcv_dev->keyboard &&
hid_compare_device_paths(hdev, djrcv_dev->keyboard, sep)) {
kref_get(&djrcv_dev->kref);
return djrcv_dev;
}
if (djrcv_dev->hidpp &&
hid_compare_device_paths(hdev, djrcv_dev->hidpp, sep)) {
kref_get(&djrcv_dev->kref);
return djrcv_dev;
}
}
return NULL;
}
static void dj_release_receiver_dev(struct kref *kref)
{
struct dj_receiver_dev *djrcv_dev = container_of(kref, struct dj_receiver_dev, kref);
list_del(&djrcv_dev->list);
kfifo_free(&djrcv_dev->notif_fifo);
kfree(djrcv_dev);
}
static void dj_put_receiver_dev(struct hid_device *hdev)
{
struct dj_receiver_dev *djrcv_dev = hid_get_drvdata(hdev);
mutex_lock(&dj_hdev_list_lock);
if (djrcv_dev->mouse == hdev)
djrcv_dev->mouse = NULL;
if (djrcv_dev->keyboard == hdev)
djrcv_dev->keyboard = NULL;
if (djrcv_dev->hidpp == hdev)
djrcv_dev->hidpp = NULL;
kref_put(&djrcv_dev->kref, dj_release_receiver_dev);
mutex_unlock(&dj_hdev_list_lock);
}
static struct dj_receiver_dev *dj_get_receiver_dev(struct hid_device *hdev,
enum recvr_type type,
unsigned int application,
bool is_hidpp)
{
struct dj_receiver_dev *djrcv_dev;
mutex_lock(&dj_hdev_list_lock);
djrcv_dev = dj_find_receiver_dev(hdev, type);
if (!djrcv_dev) {
djrcv_dev = kzalloc(sizeof(*djrcv_dev), GFP_KERNEL);
if (!djrcv_dev)
goto out;
INIT_WORK(&djrcv_dev->work, delayedwork_callback);
spin_lock_init(&djrcv_dev->lock);
if (kfifo_alloc(&djrcv_dev->notif_fifo,
DJ_MAX_NUMBER_NOTIFS * sizeof(struct dj_workitem),
GFP_KERNEL)) {
kfree(djrcv_dev);
djrcv_dev = NULL;
goto out;
}
kref_init(&djrcv_dev->kref);
list_add_tail(&djrcv_dev->list, &dj_hdev_list);
djrcv_dev->last_query = jiffies;
djrcv_dev->type = type;
}
if (application == HID_GD_KEYBOARD)
djrcv_dev->keyboard = hdev;
if (application == HID_GD_MOUSE)
djrcv_dev->mouse = hdev;
if (is_hidpp)
djrcv_dev->hidpp = hdev;
hid_set_drvdata(hdev, djrcv_dev);
out:
mutex_unlock(&dj_hdev_list_lock);
return djrcv_dev;
}
static void logi_dj_recv_destroy_djhid_device(struct dj_receiver_dev *djrcv_dev,
struct dj_workitem *workitem)
{
/* 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[workitem->device_index];
djrcv_dev->paired_dj_devices[workitem->device_index] = NULL;
spin_unlock_irqrestore(&djrcv_dev->lock, flags);
if (dj_dev != NULL) {
hid_destroy_device(dj_dev->hdev);
kfree(dj_dev);
} else {
hid_err(djrcv_dev->hidpp, "%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_workitem *workitem)
{
/* Called in delayed work context */
struct hid_device *djrcv_hdev = djrcv_dev->hidpp;
struct hid_device *dj_hiddev;
struct dj_device *dj_dev;
u8 device_index = workitem->device_index;
unsigned long flags;
/* 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];
/* We are the only one ever adding a device, no need to lock */
if (djrcv_dev->paired_dj_devices[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)) {
hid_err(djrcv_hdev, "%s: hid_allocate_dev 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 = djrcv_hdev->vendor;
dj_hiddev->product = (workitem->quad_id_msb << 8) |
workitem->quad_id_lsb;
if (workitem->device_type) {
const char *type_str = "Device";
switch (workitem->device_type) {
case 0x01: type_str = "Keyboard"; break;
case 0x02: type_str = "Mouse"; break;
case 0x03: type_str = "Numpad"; break;
case 0x04: type_str = "Presenter"; break;
case 0x07: type_str = "Remote Control"; break;
case 0x08: type_str = "Trackball"; break;
case 0x09: type_str = "Touchpad"; break;
}
snprintf(dj_hiddev->name, sizeof(dj_hiddev->name),
"Logitech Wireless %s PID:%04x",
type_str, dj_hiddev->product);
} else {
snprintf(dj_hiddev->name, sizeof(dj_hiddev->name),
"Logitech Wireless Device PID:%04x",
dj_hiddev->product);
}
if (djrcv_dev->type == recvr_type_27mhz)
dj_hiddev->group = HID_GROUP_LOGITECH_27MHZ_DEVICE;
else
dj_hiddev->group = HID_GROUP_LOGITECH_DJ_DEVICE;
memcpy(dj_hiddev->phys, djrcv_hdev->phys, sizeof(djrcv_hdev->phys));
snprintf(tmpstr, sizeof(tmpstr), ":%d", device_index);
strlcat(dj_hiddev->phys, tmpstr, sizeof(dj_hiddev->phys));
dj_dev = kzalloc(sizeof(struct dj_device), GFP_KERNEL);
if (!dj_dev) {
hid_err(djrcv_hdev, "%s: failed allocating dj_dev\n", __func__);
goto dj_device_allocate_fail;
}
dj_dev->reports_supported = workitem->reports_supported;
dj_dev->hdev = dj_hiddev;
dj_dev->dj_receiver_dev = djrcv_dev;
dj_dev->device_index = device_index;
dj_hiddev->driver_data = dj_dev;
spin_lock_irqsave(&djrcv_dev->lock, flags);
djrcv_dev->paired_dj_devices[device_index] = dj_dev;
spin_unlock_irqrestore(&djrcv_dev->lock, flags);
if (hid_add_device(dj_hiddev)) {
hid_err(djrcv_hdev, "%s: failed adding dj_device\n", __func__);
goto hid_add_device_fail;
}
return;
hid_add_device_fail:
spin_lock_irqsave(&djrcv_dev->lock, flags);
djrcv_dev->paired_dj_devices[device_index] = NULL;
spin_unlock_irqrestore(&djrcv_dev->lock, flags);
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_workitem workitem;
unsigned long flags;
int count;
int retval;
dbg_hid("%s\n", __func__);
spin_lock_irqsave(&djrcv_dev->lock, flags);
/*
* Since we attach to multiple interfaces, we may get scheduled before
* we are bound to the HID++ interface, catch this.
*/
if (!djrcv_dev->ready) {
pr_warn("%s: delayedwork queued before hidpp interface was enumerated\n",
__func__);
spin_unlock_irqrestore(&djrcv_dev->lock, flags);
return;
}
count = kfifo_out(&djrcv_dev->notif_fifo, &workitem, sizeof(workitem));
if (count != sizeof(workitem)) {
spin_unlock_irqrestore(&djrcv_dev->lock, flags);
return;
}
if (!kfifo_is_empty(&djrcv_dev->notif_fifo))
schedule_work(&djrcv_dev->work);
spin_unlock_irqrestore(&djrcv_dev->lock, flags);
switch (workitem.type) {
case WORKITEM_TYPE_PAIRED:
logi_dj_recv_add_djhid_device(djrcv_dev, &workitem);
break;
case WORKITEM_TYPE_UNPAIRED:
logi_dj_recv_destroy_djhid_device(djrcv_dev, &workitem);
break;
case WORKITEM_TYPE_UNKNOWN:
retval = logi_dj_recv_query_paired_devices(djrcv_dev);
if (retval) {
hid_err(djrcv_dev->hidpp, "%s: logi_dj_recv_query_paired_devices error: %d\n",
__func__, retval);
}
break;
case WORKITEM_TYPE_EMPTY:
dbg_hid("%s: device list is empty\n", __func__);
break;
}
}
/*
* Sometimes we receive reports for which we do not have a paired dj_device
* associated with the device_index or report-type to forward the report to.
* This means that the original "device paired" notification corresponding
* to the dj_device never arrived to this driver. Possible reasons for this are:
* 1) hid-core discards all packets coming from a device during probe().
* 2) if the receiver is plugged into a KVM switch then the pairing reports
* are only forwarded to it if the focus is on this PC.
* This function deals with this by re-asking the receiver for the list of
* connected devices in the delayed work callback.
* This function MUST be called with djrcv->lock held.
*/
static void logi_dj_recv_queue_unknown_work(struct dj_receiver_dev *djrcv_dev)
{
struct dj_workitem workitem = { .type = WORKITEM_TYPE_UNKNOWN };
/* Rate limit queries done because of unhandeled reports to 2/sec */
if (time_before(jiffies, djrcv_dev->last_query + HZ / 2))
return;
kfifo_in(&djrcv_dev->notif_fifo, &workitem, sizeof(workitem));
schedule_work(&djrcv_dev->work);
}
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) */
struct dj_workitem workitem = {
.device_index = dj_report->device_index,
};
switch (dj_report->report_type) {
case REPORT_TYPE_NOTIF_DEVICE_PAIRED:
workitem.type = WORKITEM_TYPE_PAIRED;
if (dj_report->report_params[DEVICE_PAIRED_PARAM_SPFUNCTION] &
SPFUNCTION_DEVICE_LIST_EMPTY) {
workitem.type = WORKITEM_TYPE_EMPTY;
break;
}
/* fall-through */
case REPORT_TYPE_NOTIF_DEVICE_UNPAIRED:
workitem.quad_id_msb =
dj_report->report_params[DEVICE_PAIRED_PARAM_EQUAD_ID_MSB];
workitem.quad_id_lsb =
dj_report->report_params[DEVICE_PAIRED_PARAM_EQUAD_ID_LSB];
workitem.reports_supported = get_unaligned_le32(
dj_report->report_params +
DEVICE_PAIRED_RF_REPORT_TYPE);
workitem.reports_supported |= HIDPP;
if (dj_report->report_type == REPORT_TYPE_NOTIF_DEVICE_UNPAIRED)
workitem.type = WORKITEM_TYPE_UNPAIRED;
break;
default:
logi_dj_recv_queue_unknown_work(djrcv_dev);
return;
}
kfifo_in(&djrcv_dev->notif_fifo, &workitem, sizeof(workitem));
schedule_work(&djrcv_dev->work);
}
static void logi_hidpp_dev_conn_notif_equad(struct hid_device *hdev,
struct hidpp_event *hidpp_report,
struct dj_workitem *workitem)
{
struct dj_receiver_dev *djrcv_dev = hid_get_drvdata(hdev);
workitem->type = WORKITEM_TYPE_PAIRED;
workitem->device_type = hidpp_report->params[HIDPP_PARAM_DEVICE_INFO] &
HIDPP_DEVICE_TYPE_MASK;
workitem->quad_id_msb = hidpp_report->params[HIDPP_PARAM_EQUAD_MSB];
workitem->quad_id_lsb = hidpp_report->params[HIDPP_PARAM_EQUAD_LSB];
switch (workitem->device_type) {
case REPORT_TYPE_KEYBOARD:
workitem->reports_supported |= STD_KEYBOARD | MULTIMEDIA |
POWER_KEYS | MEDIA_CENTER |
HIDPP;
break;
case REPORT_TYPE_MOUSE:
workitem->reports_supported |= STD_MOUSE | HIDPP;
if (djrcv_dev->type == recvr_type_mouse_only)
workitem->reports_supported |= MULTIMEDIA;
break;
}
}
static void logi_hidpp_dev_conn_notif_27mhz(struct hid_device *hdev,
struct hidpp_event *hidpp_report,
struct dj_workitem *workitem)
{
workitem->type = WORKITEM_TYPE_PAIRED;
workitem->quad_id_lsb = hidpp_report->params[HIDPP_PARAM_27MHZ_DEVID];
switch (hidpp_report->device_index) {
case 1: /* Index 1 is always a mouse */
case 2: /* Index 2 is always a mouse */
workitem->device_type = HIDPP_DEVICE_TYPE_MOUSE;
workitem->reports_supported |= STD_MOUSE | HIDPP;
break;
case 3: /* Index 3 is always the keyboard */
case 4: /* Index 4 is used for an optional separate numpad */
workitem->device_type = HIDPP_DEVICE_TYPE_KEYBOARD;
workitem->reports_supported |= STD_KEYBOARD | MULTIMEDIA |
POWER_KEYS | HIDPP;
break;
default:
hid_warn(hdev, "%s: unexpected device-index %d", __func__,
hidpp_report->device_index);
}
}
static void logi_hidpp_recv_queue_notif(struct hid_device *hdev,
struct hidpp_event *hidpp_report)
{
/* We are called from atomic context (tasklet && djrcv->lock held) */
struct dj_receiver_dev *djrcv_dev = hid_get_drvdata(hdev);
const char *device_type = "UNKNOWN";
struct dj_workitem workitem = {
.type = WORKITEM_TYPE_EMPTY,
.device_index = hidpp_report->device_index,
};
switch (hidpp_report->params[HIDPP_PARAM_PROTO_TYPE]) {
case 0x01:
device_type = "Bluetooth";
/* Bluetooth connect packet contents is the same as (e)QUAD */
logi_hidpp_dev_conn_notif_equad(hdev, hidpp_report, &workitem);
if (!(hidpp_report->params[HIDPP_PARAM_DEVICE_INFO] &
HIDPP_MANUFACTURER_MASK)) {
hid_info(hdev, "Non Logitech device connected on slot %d\n",
hidpp_report->device_index);
workitem.reports_supported &= ~HIDPP;
}
break;
case 0x02:
device_type = "27 Mhz";
logi_hidpp_dev_conn_notif_27mhz(hdev, hidpp_report, &workitem);
break;
case 0x03:
device_type = "QUAD or eQUAD";
logi_hidpp_dev_conn_notif_equad(hdev, hidpp_report, &workitem);
break;
case 0x04:
device_type = "eQUAD step 4 DJ";
logi_hidpp_dev_conn_notif_equad(hdev, hidpp_report, &workitem);
break;
case 0x05:
device_type = "DFU Lite";
break;
case 0x06:
device_type = "eQUAD step 4 Lite";
logi_hidpp_dev_conn_notif_equad(hdev, hidpp_report, &workitem);
break;
case 0x07:
device_type = "eQUAD step 4 Gaming";
logi_hidpp_dev_conn_notif_equad(hdev, hidpp_report, &workitem);
break;
case 0x08:
device_type = "eQUAD step 4 for gamepads";
break;
case 0x0a:
device_type = "eQUAD nano Lite";
logi_hidpp_dev_conn_notif_equad(hdev, hidpp_report, &workitem);
break;
case 0x0c:
device_type = "eQUAD Lightspeed 1";
logi_hidpp_dev_conn_notif_equad(hdev, hidpp_report, &workitem);
workitem.reports_supported |= STD_KEYBOARD;
break;
case 0x0d:
device_type = "eQUAD Lightspeed 1_1";
logi_hidpp_dev_conn_notif_equad(hdev, hidpp_report, &workitem);
workitem.reports_supported |= STD_KEYBOARD;
break;
}
/* custom receiver device (eg. powerplay) */
if (hidpp_report->device_index == 7) {
workitem.reports_supported |= HIDPP;
}
if (workitem.type == WORKITEM_TYPE_EMPTY) {
hid_warn(hdev,
"unusable device of type %s (0x%02x) connected on slot %d",
device_type,
hidpp_report->params[HIDPP_PARAM_PROTO_TYPE],
hidpp_report->device_index);
return;
}
hid_info(hdev, "device of type %s (0x%02x) connected on slot %d",
device_type, hidpp_report->params[HIDPP_PARAM_PROTO_TYPE],
hidpp_report->device_index);
kfifo_in(&djrcv_dev->notif_fifo, &workitem, sizeof(workitem));
schedule_work(&djrcv_dev->work);
}
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_dj(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_report(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 void logi_dj_recv_forward_input_report(struct hid_device *hdev,
u8 *data, int size)
{
struct dj_receiver_dev *djrcv_dev = hid_get_drvdata(hdev);
struct dj_device *dj_dev;
unsigned long flags;
u8 report = data[0];
int i;
if (report > REPORT_TYPE_RFREPORT_LAST) {
hid_err(hdev, "Unexpected input report number %d\n", report);
return;
}
spin_lock_irqsave(&djrcv_dev->lock, flags);
for (i = 0; i < (DJ_MAX_PAIRED_DEVICES + DJ_DEVICE_INDEX_MIN); i++) {
dj_dev = djrcv_dev->paired_dj_devices[i];
if (dj_dev && (dj_dev->reports_supported & BIT(report))) {
logi_dj_recv_forward_report(dj_dev, data, size);
spin_unlock_irqrestore(&djrcv_dev->lock, flags);
return;
}
}
logi_dj_recv_queue_unknown_work(djrcv_dev);
spin_unlock_irqrestore(&djrcv_dev->lock, flags);
dbg_hid("No dj-devs handling input report number %d\n", report);
}
static int logi_dj_recv_send_report(struct dj_receiver_dev *djrcv_dev,
struct dj_report *dj_report)
{
struct hid_device *hdev = djrcv_dev->hidpp;
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) {
hid_err(hdev, "%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_hidpp_devices(struct dj_receiver_dev *djrcv_dev)
{
static const u8 template[] = {
REPORT_ID_HIDPP_SHORT,
HIDPP_RECEIVER_INDEX,
HIDPP_SET_REGISTER,
HIDPP_REG_CONNECTION_STATE,
HIDPP_FAKE_DEVICE_ARRIVAL,
0x00, 0x00
};
u8 *hidpp_report;
int retval;
hidpp_report = kmemdup(template, sizeof(template), GFP_KERNEL);
if (!hidpp_report)
return -ENOMEM;
retval = hid_hw_raw_request(djrcv_dev->hidpp,
REPORT_ID_HIDPP_SHORT,
hidpp_report, sizeof(template),
HID_OUTPUT_REPORT,
HID_REQ_SET_REPORT);
kfree(hidpp_report);
return (retval < 0) ? retval : 0;
}
static int logi_dj_recv_query_paired_devices(struct dj_receiver_dev *djrcv_dev)
{
struct dj_report *dj_report;
int retval;
djrcv_dev->last_query = jiffies;
if (djrcv_dev->type != recvr_type_dj)
return logi_dj_recv_query_hidpp_devices(djrcv_dev);
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->hidpp;
struct dj_report *dj_report;
u8 *buf;
int retval = 0;
dj_report = kzalloc(sizeof(struct dj_report), GFP_KERNEL);
if (!dj_report)
return -ENOMEM;
if (djrcv_dev->type == recvr_type_dj) {
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[] = { REPORT_ID_HIDPP_SHORT,
HIDPP_RECEIVER_INDEX,
HIDPP_GET_LONG_REGISTER,
HIDPP_REG_PAIRING_INFORMATION };
static u8 unifying_pairing_answer[] = { REPORT_ID_HIDPP_LONG,
HIDPP_RECEIVER_INDEX,
HIDPP_GET_LONG_REGISTER,
HIDPP_REG_PAIRING_INFORMATION };
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) ||
(buf[0] == REPORT_ID_HIDPP_VERY_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->hidpp, reportnum, buf,
count, report_type, reqtype);
}
if (buf[0] != REPORT_TYPE_LEDS)
return -EINVAL;
if (djrcv_dev->type != recvr_type_dj && count >= 2) {
if (!djrcv_dev->keyboard) {
hid_warn(hid, "Received REPORT_TYPE_LEDS request before the keyboard interface was enumerated\n");
return 0;
}
/* usbhid overrides the report ID and ignores the first byte */
return hid_hw_raw_request(djrcv_dev->keyboard, 0, buf, count,
report_type, reqtype);
}
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->hidpp, 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: %llx\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: %llx\n",
__func__, djdev->reports_supported);
if (djdev->dj_receiver_dev->type == recvr_type_gaming_hidpp ||
djdev->dj_receiver_dev->type == recvr_type_mouse_only)
rdcat(rdesc, &rsize, mse_high_res_descriptor,
sizeof(mse_high_res_descriptor));
else if (djdev->dj_receiver_dev->type == recvr_type_27mhz)
rdcat(rdesc, &rsize, mse_27mhz_descriptor,
sizeof(mse_27mhz_descriptor));
else if (djdev->dj_receiver_dev->type == recvr_type_bluetooth)
rdcat(rdesc, &rsize, mse_bluetooth_descriptor,
sizeof(mse_bluetooth_descriptor));
else
rdcat(rdesc, &rsize, mse_descriptor,
sizeof(mse_descriptor));
}
if (djdev->reports_supported & MULTIMEDIA) {
dbg_hid("%s: sending a multimedia report descriptor: %llx\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: %llx\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: %llx\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: %llx\n",
__func__, djdev->reports_supported);
}
if (djdev->reports_supported & HIDPP) {
dbg_hid("%s: sending a HID++ descriptor, reports_supported: %llx\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)
hid_err(hdev, "%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_dj(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 hidpp_event *hidpp_report = (struct hidpp_event *) data;
struct dj_device *dj_dev;
unsigned long flags;
u8 device_index = hidpp_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.
*/
hid_err(hdev, "%s: invalid device index:%d\n", __func__,
hidpp_report->device_index);
return false;
}
spin_lock_irqsave(&djrcv_dev->lock, flags);
dj_dev = djrcv_dev->paired_dj_devices[device_index];
/*
* With 27 MHz receivers, we do not get an explicit unpair event,
* remove the old device if the user has paired a *different* device.
*/
if (djrcv_dev->type == recvr_type_27mhz && dj_dev &&
hidpp_report->sub_id == REPORT_TYPE_NOTIF_DEVICE_CONNECTED &&
hidpp_report->params[HIDPP_PARAM_PROTO_TYPE] == 0x02 &&
hidpp_report->params[HIDPP_PARAM_27MHZ_DEVID] !=
dj_dev->hdev->product) {
struct dj_workitem workitem = {
.device_index = hidpp_report->device_index,
.type = WORKITEM_TYPE_UNPAIRED,
};
kfifo_in(&djrcv_dev->notif_fifo, &workitem, sizeof(workitem));
/* logi_hidpp_recv_queue_notif will queue the work */
dj_dev = NULL;
}
if (dj_dev) {
logi_dj_recv_forward_report(dj_dev, data, size);
} else {
if (hidpp_report->sub_id == REPORT_TYPE_NOTIF_DEVICE_CONNECTED)
logi_hidpp_recv_queue_notif(hdev, hidpp_report);
else
logi_dj_recv_queue_unknown_work(djrcv_dev);
}
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)
{
struct dj_receiver_dev *djrcv_dev = hid_get_drvdata(hdev);
dbg_hid("%s, size:%d\n", __func__, size);
if (!djrcv_dev)
return 0;
if (!hdev->report_enum[HID_INPUT_REPORT].numbered) {
if (djrcv_dev->unnumbered_application == HID_GD_KEYBOARD) {
/*
* For the keyboard, we can reuse the same report by
* using the second byte which is constant in the USB
* HID report descriptor.
*/
data[1] = data[0];
data[0] = REPORT_TYPE_KEYBOARD;
logi_dj_recv_forward_input_report(hdev, data, size);
/* restore previous state */
data[0] = data[1];
data[1] = 0;
}
/*
* Mouse-only receivers send unnumbered mouse data. The 27 MHz
* receiver uses 6 byte packets, the nano receiver 8 bytes.
*/
if (djrcv_dev->unnumbered_application == HID_GD_MOUSE &&
size <= 8) {
u8 mouse_report[9];
/* Prepend report id */
mouse_report[0] = REPORT_TYPE_MOUSE;
memcpy(mouse_report + 1, data, size);
logi_dj_recv_forward_input_report(hdev, mouse_report,
size + 1);
}
return false;
}
switch (data[0]) {
case REPORT_ID_DJ_SHORT:
if (size != DJREPORT_SHORT_LENGTH) {
hid_err(hdev, "Short DJ report bad size (%d)", size);
return false;
}
return logi_dj_dj_event(hdev, report, data, size);
case REPORT_ID_DJ_LONG:
if (size != DJREPORT_LONG_LENGTH) {
hid_err(hdev, "Long DJ report 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) {
hid_err(hdev, "Short HID++ report 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) {
hid_err(hdev, "Long HID++ report bad size (%d)", size);
return false;
}
return logi_dj_hidpp_event(hdev, report, data, size);
}
logi_dj_recv_forward_input_report(hdev, data, size);
return false;
}
static int logi_dj_probe(struct hid_device *hdev,
const struct hid_device_id *id)
{
struct hid_report_enum *rep_enum;
struct hid_report *rep;
struct dj_receiver_dev *djrcv_dev;
struct usb_interface *intf;
unsigned int no_dj_interfaces = 0;
bool has_hidpp = false;
unsigned long flags;
int retval;
/*
* Call to usbhid to fetch the HID descriptors of the current
* interface subsequently call to the hid/hid-core to parse the
* fetched descriptors.
*/
retval = hid_parse(hdev);
if (retval) {
hid_err(hdev, "%s: parse failed\n", __func__);
return retval;
}
/*
* Some KVMs add an extra interface for e.g. mouse emulation. If we
* treat these as logitech-dj interfaces then this causes input events
* reported through this extra interface to not be reported correctly.
* To avoid this, we treat these as generic-hid devices.
*/
switch (id->driver_data) {
case recvr_type_dj: no_dj_interfaces = 3; break;
case recvr_type_hidpp: no_dj_interfaces = 2; break;
case recvr_type_gaming_hidpp: no_dj_interfaces = 3; break;
case recvr_type_mouse_only: no_dj_interfaces = 2; break;
case recvr_type_27mhz: no_dj_interfaces = 2; break;
case recvr_type_bluetooth: no_dj_interfaces = 2; break;
}
if (hid_is_using_ll_driver(hdev, &usb_hid_driver)) {
intf = to_usb_interface(hdev->dev.parent);
if (intf && intf->altsetting->desc.bInterfaceNumber >=
no_dj_interfaces) {
hdev->quirks |= HID_QUIRK_INPUT_PER_APP;
return hid_hw_start(hdev, HID_CONNECT_DEFAULT);
}
}
rep_enum = &hdev->report_enum[HID_INPUT_REPORT];
/* no input reports, bail out */
if (list_empty(&rep_enum->report_list))
return -ENODEV;
/*
* Check for the HID++ application.
* Note: we should theoretically check for HID++ and DJ
* collections, but this will do.
*/
list_for_each_entry(rep, &rep_enum->report_list, list) {
if (rep->application == 0xff000001)
has_hidpp = true;
}
/*
* Ignore interfaces without DJ/HID++ collection, they will not carry
* any data, dont create any hid_device for them.
*/
if (!has_hidpp && id->driver_data == recvr_type_dj)
return -ENODEV;
/* get the current application attached to the node */
rep = list_first_entry(&rep_enum->report_list, struct hid_report, list);
djrcv_dev = dj_get_receiver_dev(hdev, id->driver_data,
rep->application, has_hidpp);
if (!djrcv_dev) {
hid_err(hdev, "%s: dj_get_receiver_dev failed\n", __func__);
return -ENOMEM;
}
if (!rep_enum->numbered)
djrcv_dev->unnumbered_application = rep->application;
/* Starts the usb device and connects to upper interfaces hiddev and
* hidraw */
retval = hid_hw_start(hdev, HID_CONNECT_HIDRAW|HID_CONNECT_HIDDEV);
if (retval) {
hid_err(hdev, "%s: hid_hw_start returned error\n", __func__);
goto hid_hw_start_fail;
}
if (has_hidpp) {
retval = logi_dj_recv_switch_to_dj_mode(djrcv_dev, 0);
if (retval < 0) {
hid_err(hdev, "%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) {
hid_err(hdev, "%s: hid_hw_open returned error:%d\n",
__func__, retval);
goto llopen_failed;
}
/* Allow incoming packets to arrive: */
hid_device_io_start(hdev);
if (has_hidpp) {
spin_lock_irqsave(&djrcv_dev->lock, flags);
djrcv_dev->ready = true;
spin_unlock_irqrestore(&djrcv_dev->lock, flags);
retval = logi_dj_recv_query_paired_devices(djrcv_dev);
if (retval < 0) {
hid_err(hdev, "%s: logi_dj_recv_query_paired_devices error:%d\n",
__func__, retval);
/*
* This can happen with a KVM, let the probe succeed,
* logi_dj_recv_queue_unknown_work will retry later.
*/
}
}
return 0;
llopen_failed:
switch_to_dj_mode_fail:
hid_hw_stop(hdev);
hid_hw_start_fail:
dj_put_receiver_dev(hdev);
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);
if (!djrcv_dev || djrcv_dev->hidpp != hdev)
return 0;
retval = logi_dj_recv_switch_to_dj_mode(djrcv_dev, 0);
if (retval < 0) {
hid_err(hdev, "%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;
unsigned long flags;
int i;
dbg_hid("%s\n", __func__);
if (!djrcv_dev)
return hid_hw_stop(hdev);
/*
* This ensures that if the work gets requeued from another
* interface of the same receiver it will be a no-op.
*/
spin_lock_irqsave(&djrcv_dev->lock, flags);
djrcv_dev->ready = false;
spin_unlock_irqrestore(&djrcv_dev->lock, flags);
cancel_work_sync(&djrcv_dev->work);
hid_hw_close(hdev);
hid_hw_stop(hdev);
/*
* For proper operation we need access to all interfaces, so we destroy
* the paired devices when we're unbound from any interface.
*
* Note we may still be bound to other interfaces, sharing the same
* djrcv_dev, so we need locking here.
*/
for (i = 0; i < (DJ_MAX_PAIRED_DEVICES + DJ_DEVICE_INDEX_MIN); i++) {
spin_lock_irqsave(&djrcv_dev->lock, flags);
dj_dev = djrcv_dev->paired_dj_devices[i];
djrcv_dev->paired_dj_devices[i] = NULL;
spin_unlock_irqrestore(&djrcv_dev->lock, flags);
if (dj_dev != NULL) {
hid_destroy_device(dj_dev->hdev);
kfree(dj_dev);
}
}
dj_put_receiver_dev(hdev);
}
static const struct hid_device_id logi_dj_receivers[] = {
{HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH,
USB_DEVICE_ID_LOGITECH_UNIFYING_RECEIVER),
.driver_data = recvr_type_dj},
{HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH,
USB_DEVICE_ID_LOGITECH_UNIFYING_RECEIVER_2),
.driver_data = recvr_type_dj},
{ /* Logitech Nano mouse only receiver */
HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH,
USB_DEVICE_ID_LOGITECH_NANO_RECEIVER),
.driver_data = recvr_type_mouse_only},
{ /* Logitech Nano (non DJ) receiver */
HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH,
USB_DEVICE_ID_LOGITECH_NANO_RECEIVER_2),
.driver_data = recvr_type_hidpp},
{ /* Logitech G700(s) receiver (0xc531) */
HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH,
0xc531),
.driver_data = recvr_type_gaming_hidpp},
{ /* Logitech lightspeed receiver (0xc539) */
HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH,
USB_DEVICE_ID_LOGITECH_NANO_RECEIVER_LIGHTSPEED_1),
.driver_data = recvr_type_gaming_hidpp},
{ /* Logitech lightspeed receiver (0xc53f) */
HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH,
USB_DEVICE_ID_LOGITECH_NANO_RECEIVER_LIGHTSPEED_1_1),
.driver_data = recvr_type_gaming_hidpp},
{ /* Logitech 27 MHz HID++ 1.0 receiver (0xc513) */
HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_MX3000_RECEIVER),
.driver_data = recvr_type_27mhz},
{ /* Logitech powerplay receiver (0xc53a) */
HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH,
USB_DEVICE_ID_LOGITECH_NANO_RECEIVER_POWERPLAY),
.driver_data = recvr_type_gaming_hidpp},
{ /* Logitech 27 MHz HID++ 1.0 receiver (0xc517) */
HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH,
USB_DEVICE_ID_S510_RECEIVER_2),
.driver_data = recvr_type_27mhz},
{ /* Logitech 27 MHz HID++ 1.0 mouse-only receiver (0xc51b) */
HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH,
USB_DEVICE_ID_LOGITECH_27MHZ_MOUSE_RECEIVER),
.driver_data = recvr_type_27mhz},
{ /* Logitech MX5000 HID++ / bluetooth receiver keyboard intf. */
HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH,
0xc70e),
.driver_data = recvr_type_bluetooth},
{ /* Logitech MX5000 HID++ / bluetooth receiver mouse intf. */
HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH,
0xc70a),
.driver_data = recvr_type_bluetooth},
{ /* Logitech MX5500 HID++ / bluetooth receiver keyboard intf. */
HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH,
0xc71b),
.driver_data = recvr_type_bluetooth},
{ /* Logitech MX5500 HID++ / bluetooth receiver mouse intf. */
HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH,
0xc71c),
.driver_data = recvr_type_bluetooth},
{}
};
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");
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