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HID: corsair-void: Add Corsair Void headset family driver

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Introduce a driver for the Corsair Void family of headsets, supporting:
 - Battery reporting (power_supply)
 - Sidetone setting support
 - Physical microphone location reporting
 - Headset and receiver firmware version reporting
 - Built-in alert triggering
 - USB wireless_status

Tested with a Void Pro Wireless, Void Elite Wireless and a Void Elite Wired

Signed-off-by: Stuart Hayhurst <stuart.a.hayhurst@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.com>
This commit is contained in:
Stuart Hayhurst 2024-10-09 00:30:29 +01:00 committed by Jiri Kosina
parent f23aa4c076
commit 6ea2a6fd38
4 changed files with 871 additions and 1 deletions
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38
Documentation/ABI/testing/sysfs-driver-hid-corsair-void Normal file
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@ -0,0 +1,38 @@
What: /sys/bus/hid/drivers/hid-corsair-void/<dev>/fw_version_headset
Date: January 2024
KernelVersion: 6.13
Contact: Stuart Hayhurst <stuart.a.hayhurst@gmail.com>
Description: (R) The firmware version of the headset
* Returns -ENODATA if no version was reported
What: /sys/bus/hid/drivers/hid-corsair-void/<dev>/fw_version_receiver
Date: January 2024
KernelVersion: 6.13
Contact: Stuart Hayhurst <stuart.a.hayhurst@gmail.com>
Description: (R) The firmware version of the receiver
What: /sys/bus/hid/drivers/hid-corsair-void/<dev>/microphone_up
Date: July 2023
KernelVersion: 6.13
Contact: Stuart Hayhurst <stuart.a.hayhurst@gmail.com>
Description: (R) Get the physical position of the microphone
* 1 -> Microphone up
* 0 -> Microphone down
What: /sys/bus/hid/drivers/hid-corsair-void/<dev>/send_alert
Date: July 2023
KernelVersion: 6.13
Contact: Stuart Hayhurst <stuart.a.hayhurst@gmail.com>
Description: (W) Play a built-in notification from the headset (0 / 1)
What: /sys/bus/hid/drivers/hid-corsair-void/<dev>/set_sidetone
Date: December 2023
KernelVersion: 6.13
Contact: Stuart Hayhurst <stuart.a.hayhurst@gmail.com>
Description: (W) Set the sidetone volume (0 - sidetone_max)
What: /sys/bus/hid/drivers/hid-corsair-void/<dev>/sidetone_max
Date: July 2024
KernelVersion: 6.13
Contact: Stuart Hayhurst <stuart.a.hayhurst@gmail.com>
Description: (R) Report the maximum sidetone volume

3
drivers/hid/Kconfig
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@ -213,13 +213,16 @@ config HID_CHICONY
config HID_CORSAIR
tristate "Corsair devices"
depends on USB_HID && LEDS_CLASS
select POWER_SUPPLY
help
Support for Corsair devices that are not fully compliant with the
HID standard.
Support for Corsair Void headsets.
Supported devices:
- Vengeance K90
- Scimitar PRO RGB
- Corsair Void headsets
config HID_COUGAR
tristate "Cougar devices"

2
drivers/hid/Makefile
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@ -38,7 +38,7 @@ obj-$(CONFIG_HID_BIGBEN_FF) += hid-bigbenff.o
obj-$(CONFIG_HID_CHERRY) += hid-cherry.o
obj-$(CONFIG_HID_CHICONY) += hid-chicony.o
obj-$(CONFIG_HID_CMEDIA) += hid-cmedia.o
obj-$(CONFIG_HID_CORSAIR) += hid-corsair.o
obj-$(CONFIG_HID_CORSAIR) += hid-corsair.o hid-corsair-void.o
obj-$(CONFIG_HID_COUGAR) += hid-cougar.o
obj-$(CONFIG_HID_CP2112) += hid-cp2112.o
obj-$(CONFIG_HID_CYPRESS) += hid-cypress.o

829
drivers/hid/hid-corsair-void.c Normal file
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@ -0,0 +1,829 @@
// SPDX-License-Identifier: GPL-2.0-or-later
/*
* HID driver for Corsair Void headsets
*
* Copyright (C) 2023-2024 Stuart Hayhurst
*/
/* -------------------------------------------------------------------------- */
/* Receiver report information: (ID 100) */
/* -------------------------------------------------------------------------- */
/*
* When queried, the receiver reponds with 5 bytes to describe the battery
* The power button, mute button and moving the mic also trigger this report
* This includes power button + mic + connection + battery status and capacity
* The information below may not be perfect, it's been gathered through guesses
*
* 0: REPORT ID
* 100 for the battery packet
*
* 1: POWER BUTTON + (?)
* Largest bit is 1 when power button pressed
*
* 2: BATTERY CAPACITY + MIC STATUS
* Battery capacity:
* Seems to report ~54 higher than reality when charging
* Capped at 100, charging or not
* Microphone status:
* Largest bit is set to 1 when the mic is physically up
* No bits change when the mic is muted, only when physically moved
* This report is sent every time the mic is moved, no polling required
*
* 3: CONNECTION STATUS
* 16: Wired headset
* 38: Initialising
* 49: Lost connection
* 51: Disconnected, searching
* 52: Disconnected, not searching
* 177: Normal
*
* 4: BATTERY STATUS
* 0: Disconnected
* 1: Normal
* 2: Low
* 3: Critical - sent during shutdown
* 4: Fully charged
* 5: Charging
*/
/* -------------------------------------------------------------------------- */
/* -------------------------------------------------------------------------- */
/* Receiver report information: (ID 102) */
/* -------------------------------------------------------------------------- */
/*
* When queried, the recevier responds with 4 bytes to describe the firmware
* The first 2 bytes are for the receiver, the second 2 are the headset
* The headset firmware version will be 0 if no headset is connected
*
* 0: Recevier firmware major version
* Major version of the receiver's firmware
*
* 1: Recevier firmware minor version
* Minor version of the receiver's firmware
*
* 2: Headset firmware major version
* Major version of the headset's firmware
*
* 3: Headset firmware minor version
* Minor version of the headset's firmware
*/
/* -------------------------------------------------------------------------- */
#include <linux/bitfield.h>
#include <linux/bitops.h>
#include <linux/cleanup.h>
#include <linux/device.h>
#include <linux/hid.h>
#include <linux/module.h>
#include <linux/mutex.h>
#include <linux/power_supply.h>
#include <linux/usb.h>
#include <linux/workqueue.h>
#include <asm/byteorder.h>
#include "hid-ids.h"
#define CORSAIR_VOID_DEVICE(id, type) { HID_USB_DEVICE(USB_VENDOR_ID_CORSAIR, (id)), \
.driver_data = (type) }
#define CORSAIR_VOID_WIRELESS_DEVICE(id) CORSAIR_VOID_DEVICE((id), CORSAIR_VOID_WIRELESS)
#define CORSAIR_VOID_WIRED_DEVICE(id) CORSAIR_VOID_DEVICE((id), CORSAIR_VOID_WIRED)
#define CORSAIR_VOID_STATUS_REQUEST_ID 0xC9
#define CORSAIR_VOID_NOTIF_REQUEST_ID 0xCA
#define CORSAIR_VOID_SIDETONE_REQUEST_ID 0xFF
#define CORSAIR_VOID_STATUS_REPORT_ID 0x64
#define CORSAIR_VOID_FIRMWARE_REPORT_ID 0x66
#define CORSAIR_VOID_USB_SIDETONE_REQUEST 0x1
#define CORSAIR_VOID_USB_SIDETONE_REQUEST_TYPE 0x21
#define CORSAIR_VOID_USB_SIDETONE_VALUE 0x200
#define CORSAIR_VOID_USB_SIDETONE_INDEX 0xB00
#define CORSAIR_VOID_MIC_MASK GENMASK(7, 7)
#define CORSAIR_VOID_CAPACITY_MASK GENMASK(6, 0)
#define CORSAIR_VOID_WIRELESS_CONNECTED 177
#define CORSAIR_VOID_SIDETONE_MAX_WIRELESS 55
#define CORSAIR_VOID_SIDETONE_MAX_WIRED 4096
enum {
CORSAIR_VOID_WIRELESS,
CORSAIR_VOID_WIRED,
};
enum {
CORSAIR_VOID_BATTERY_NORMAL = 1,
CORSAIR_VOID_BATTERY_LOW = 2,
CORSAIR_VOID_BATTERY_CRITICAL = 3,
CORSAIR_VOID_BATTERY_CHARGED = 4,
CORSAIR_VOID_BATTERY_CHARGING = 5,
};
static enum power_supply_property corsair_void_battery_props[] = {
POWER_SUPPLY_PROP_STATUS,
POWER_SUPPLY_PROP_PRESENT,
POWER_SUPPLY_PROP_CAPACITY,
POWER_SUPPLY_PROP_CAPACITY_LEVEL,
POWER_SUPPLY_PROP_SCOPE,
POWER_SUPPLY_PROP_MODEL_NAME,
POWER_SUPPLY_PROP_MANUFACTURER,
};
struct corsair_void_battery_data {
int status;
bool present;
int capacity;
int capacity_level;
};
struct corsair_void_drvdata {
struct hid_device *hid_dev;
struct device *dev;
char *name;
bool is_wired;
unsigned int sidetone_max;
struct corsair_void_battery_data battery_data;
bool mic_up;
bool connected;
int fw_receiver_major;
int fw_receiver_minor;
int fw_headset_major;
int fw_headset_minor;
struct power_supply *battery;
struct power_supply_desc battery_desc;
struct mutex battery_mutex;
struct delayed_work delayed_status_work;
struct delayed_work delayed_firmware_work;
struct work_struct battery_remove_work;
struct work_struct battery_add_work;
};
/*
* Functions to process receiver data
*/
static void corsair_void_set_wireless_status(struct corsair_void_drvdata *drvdata)
{
struct usb_interface *usb_if = to_usb_interface(drvdata->dev->parent);
if (drvdata->is_wired)
return;
usb_set_wireless_status(usb_if, drvdata->connected ?
USB_WIRELESS_STATUS_CONNECTED :
USB_WIRELESS_STATUS_DISCONNECTED);
}
static void corsair_void_set_unknown_batt(struct corsair_void_drvdata *drvdata)
{
struct corsair_void_battery_data *battery_data = &drvdata->battery_data;
battery_data->status = POWER_SUPPLY_STATUS_UNKNOWN;
battery_data->present = false;
battery_data->capacity = 0;
battery_data->capacity_level = POWER_SUPPLY_CAPACITY_LEVEL_UNKNOWN;
}
/* Reset data that may change between wireless connections */
static void corsair_void_set_unknown_wireless_data(struct corsair_void_drvdata *drvdata)
{
/* Only 0 out headset, receiver is always known if relevant */
drvdata->fw_headset_major = 0;
drvdata->fw_headset_minor = 0;
drvdata->connected = false;
drvdata->mic_up = false;
corsair_void_set_wireless_status(drvdata);
}
static void corsair_void_process_receiver(struct corsair_void_drvdata *drvdata,
int raw_battery_capacity,
int raw_connection_status,
int raw_battery_status)
{
struct corsair_void_battery_data *battery_data = &drvdata->battery_data;
struct corsair_void_battery_data orig_battery_data;
/* Save initial battery data, to compare later */
orig_battery_data = *battery_data;
/* Headset not connected, or it's wired */
if (raw_connection_status != CORSAIR_VOID_WIRELESS_CONNECTED)
goto unknown_battery;
/* Battery information unavailable */
if (raw_battery_status == 0)
goto unknown_battery;
/* Battery must be connected then */
battery_data->present = true;
battery_data->capacity_level = POWER_SUPPLY_CAPACITY_LEVEL_NORMAL;
/* Set battery status */
switch (raw_battery_status) {
case CORSAIR_VOID_BATTERY_NORMAL:
case CORSAIR_VOID_BATTERY_LOW:
case CORSAIR_VOID_BATTERY_CRITICAL:
battery_data->status = POWER_SUPPLY_STATUS_DISCHARGING;
if (raw_battery_status == CORSAIR_VOID_BATTERY_LOW)
battery_data->capacity_level = POWER_SUPPLY_CAPACITY_LEVEL_LOW;
else if (raw_battery_status == CORSAIR_VOID_BATTERY_CRITICAL)
battery_data->capacity_level = POWER_SUPPLY_CAPACITY_LEVEL_CRITICAL;
break;
case CORSAIR_VOID_BATTERY_CHARGED:
battery_data->status = POWER_SUPPLY_STATUS_FULL;
break;
case CORSAIR_VOID_BATTERY_CHARGING:
battery_data->status = POWER_SUPPLY_STATUS_CHARGING;
break;
default:
hid_warn(drvdata->hid_dev, "unknown battery status '%d'",
raw_battery_status);
goto unknown_battery;
break;
}
battery_data->capacity = raw_battery_capacity;
corsair_void_set_wireless_status(drvdata);
goto success;
unknown_battery:
corsair_void_set_unknown_batt(drvdata);
success:
/* Inform power supply if battery values changed */
if (memcmp(&orig_battery_data, battery_data, sizeof(*battery_data))) {
scoped_guard(mutex, &drvdata->battery_mutex) {
if (drvdata->battery) {
power_supply_changed(drvdata->battery);
}
}
}
}
/*
* Functions to report stored data
*/
static int corsair_void_battery_get_property(struct power_supply *psy,
enum power_supply_property prop,
union power_supply_propval *val)
{
struct corsair_void_drvdata *drvdata = power_supply_get_drvdata(psy);
switch (prop) {
case POWER_SUPPLY_PROP_SCOPE:
val->intval = POWER_SUPPLY_SCOPE_DEVICE;
break;
case POWER_SUPPLY_PROP_MODEL_NAME:
if (!strncmp(drvdata->hid_dev->name, "Corsair ", 8))
val->strval = drvdata->hid_dev->name + 8;
else
val->strval = drvdata->hid_dev->name;
break;
case POWER_SUPPLY_PROP_MANUFACTURER:
val->strval = "Corsair";
break;
case POWER_SUPPLY_PROP_STATUS:
val->intval = drvdata->battery_data.status;
break;
case POWER_SUPPLY_PROP_PRESENT:
val->intval = drvdata->battery_data.present;
break;
case POWER_SUPPLY_PROP_CAPACITY:
val->intval = drvdata->battery_data.capacity;
break;
case POWER_SUPPLY_PROP_CAPACITY_LEVEL:
val->intval = drvdata->battery_data.capacity_level;
break;
default:
return -EINVAL;
}
return 0;
}
static ssize_t microphone_up_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct corsair_void_drvdata *drvdata = dev_get_drvdata(dev);
if (!drvdata->connected)
return -ENODEV;
return sysfs_emit(buf, "%d\n", drvdata->mic_up);
}
static ssize_t fw_version_receiver_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct corsair_void_drvdata *drvdata = dev_get_drvdata(dev);
if (drvdata->fw_receiver_major == 0 && drvdata->fw_receiver_minor == 0)
return -ENODATA;
return sysfs_emit(buf, "%d.%02d\n", drvdata->fw_receiver_major,
drvdata->fw_receiver_minor);
}
static ssize_t fw_version_headset_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct corsair_void_drvdata *drvdata = dev_get_drvdata(dev);
if (drvdata->fw_headset_major == 0 && drvdata->fw_headset_minor == 0)
return -ENODATA;
return sysfs_emit(buf, "%d.%02d\n", drvdata->fw_headset_major,
drvdata->fw_headset_minor);
}
static ssize_t sidetone_max_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct corsair_void_drvdata *drvdata = dev_get_drvdata(dev);
return sysfs_emit(buf, "%d\n", drvdata->sidetone_max);
}
/*
* Functions to send data to headset
*/
static ssize_t send_alert_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct corsair_void_drvdata *drvdata = dev_get_drvdata(dev);
struct hid_device *hid_dev = drvdata->hid_dev;
unsigned char alert_id;
unsigned char *send_buf __free(kfree) = NULL;
int ret;
if (!drvdata->connected || drvdata->is_wired)
return -ENODEV;
/* Only accept 0 or 1 for alert ID */
if (kstrtou8(buf, 10, &alert_id) || alert_id >= 2)
return -EINVAL;
send_buf = kmalloc(3, GFP_KERNEL);
if (!send_buf)
return -ENOMEM;
/* Packet format to send alert with ID alert_id */
send_buf[0] = CORSAIR_VOID_NOTIF_REQUEST_ID;
send_buf[1] = 0x02;
send_buf[2] = alert_id;
ret = hid_hw_raw_request(hid_dev, CORSAIR_VOID_NOTIF_REQUEST_ID,
send_buf, 3, HID_OUTPUT_REPORT,
HID_REQ_SET_REPORT);
if (ret < 0)
hid_warn(hid_dev, "failed to send alert request (reason: %d)",
ret);
else
ret = count;
return ret;
}
static int corsair_void_set_sidetone_wired(struct device *dev, const char *buf,
unsigned int sidetone)
{
struct usb_interface *usb_if = to_usb_interface(dev->parent);
struct usb_device *usb_dev = interface_to_usbdev(usb_if);
/* Packet format to set sidetone for wired headsets */
__le16 sidetone_le = cpu_to_le16(sidetone);
return usb_control_msg_send(usb_dev, 0,
CORSAIR_VOID_USB_SIDETONE_REQUEST,
CORSAIR_VOID_USB_SIDETONE_REQUEST_TYPE,
CORSAIR_VOID_USB_SIDETONE_VALUE,
CORSAIR_VOID_USB_SIDETONE_INDEX,
&sidetone_le, 2, USB_CTRL_SET_TIMEOUT,
GFP_KERNEL);
}
static int corsair_void_set_sidetone_wireless(struct device *dev,
const char *buf,
unsigned char sidetone)
{
struct corsair_void_drvdata *drvdata = dev_get_drvdata(dev);
struct hid_device *hid_dev = drvdata->hid_dev;
unsigned char *send_buf __free(kfree) = NULL;
send_buf = kmalloc(12, GFP_KERNEL);
if (!send_buf)
return -ENOMEM;
/* Packet format to set sidetone for wireless headsets */
send_buf[0] = CORSAIR_VOID_SIDETONE_REQUEST_ID;
send_buf[1] = 0x0B;
send_buf[2] = 0x00;
send_buf[3] = 0xFF;
send_buf[4] = 0x04;
send_buf[5] = 0x0E;
send_buf[6] = 0xFF;
send_buf[7] = 0x05;
send_buf[8] = 0x01;
send_buf[9] = 0x04;
send_buf[10] = 0x00;
send_buf[11] = sidetone + 200;
return hid_hw_raw_request(hid_dev, CORSAIR_VOID_SIDETONE_REQUEST_ID,
send_buf, 12, HID_FEATURE_REPORT,
HID_REQ_SET_REPORT);
}
static ssize_t set_sidetone_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct corsair_void_drvdata *drvdata = dev_get_drvdata(dev);
struct hid_device *hid_dev = drvdata->hid_dev;
unsigned int sidetone;
int ret;
if (!drvdata->connected)
return -ENODEV;
/* sidetone must be between 0 and drvdata->sidetone_max inclusive */
if (kstrtouint(buf, 10, &sidetone) || sidetone > drvdata->sidetone_max)
return -EINVAL;
if (drvdata->is_wired)
ret = corsair_void_set_sidetone_wired(dev, buf, sidetone);
else
ret = corsair_void_set_sidetone_wireless(dev, buf, sidetone);
if (ret < 0)
hid_warn(hid_dev, "failed to send sidetone (reason: %d)", ret);
else
ret = count;
return ret;
}
static int corsair_void_request_status(struct hid_device *hid_dev, int id)
{
unsigned char *send_buf __free(kfree) = NULL;
send_buf = kmalloc(2, GFP_KERNEL);
if (!send_buf)
return -ENOMEM;
/* Packet format to request data item (status / firmware) refresh */
send_buf[0] = CORSAIR_VOID_STATUS_REQUEST_ID;
send_buf[1] = id;
/* Send request for data refresh */
return hid_hw_raw_request(hid_dev, CORSAIR_VOID_STATUS_REQUEST_ID,
send_buf, 2, HID_OUTPUT_REPORT,
HID_REQ_SET_REPORT);
}
/*
* Headset connect / disconnect handlers and work handlers
*/
static void corsair_void_status_work_handler(struct work_struct *work)
{
struct corsair_void_drvdata *drvdata;
struct delayed_work *delayed_work;
int battery_ret;
delayed_work = container_of(work, struct delayed_work, work);
drvdata = container_of(delayed_work, struct corsair_void_drvdata,
delayed_status_work);
battery_ret = corsair_void_request_status(drvdata->hid_dev,
CORSAIR_VOID_STATUS_REPORT_ID);
if (battery_ret < 0) {
hid_warn(drvdata->hid_dev,
"failed to request battery (reason: %d)", battery_ret);
}
}
static void corsair_void_firmware_work_handler(struct work_struct *work)
{
struct corsair_void_drvdata *drvdata;
struct delayed_work *delayed_work;
int firmware_ret;
delayed_work = container_of(work, struct delayed_work, work);
drvdata = container_of(delayed_work, struct corsair_void_drvdata,
delayed_firmware_work);
firmware_ret = corsair_void_request_status(drvdata->hid_dev,
CORSAIR_VOID_FIRMWARE_REPORT_ID);
if (firmware_ret < 0) {
hid_warn(drvdata->hid_dev,
"failed to request firmware (reason: %d)", firmware_ret);
}
}
static void corsair_void_battery_remove_work_handler(struct work_struct *work)
{
struct corsair_void_drvdata *drvdata;
drvdata = container_of(work, struct corsair_void_drvdata,
battery_remove_work);
scoped_guard(mutex, &drvdata->battery_mutex) {
if (drvdata->battery) {
power_supply_unregister(drvdata->battery);
drvdata->battery = NULL;
}
}
}
static void corsair_void_battery_add_work_handler(struct work_struct *work)
{
struct corsair_void_drvdata *drvdata;
struct power_supply_config psy_cfg;
struct power_supply *new_supply;
drvdata = container_of(work, struct corsair_void_drvdata,
battery_add_work);
guard(mutex)(&drvdata->battery_mutex);
if (drvdata->battery)
return;
psy_cfg.drv_data = drvdata;
new_supply = power_supply_register(drvdata->dev,
&drvdata->battery_desc,
&psy_cfg);
if (IS_ERR(new_supply)) {
hid_err(drvdata->hid_dev,
"failed to register battery '%s' (reason: %ld)\n",
drvdata->battery_desc.name,
PTR_ERR(new_supply));
return;
}
if (power_supply_powers(new_supply, drvdata->dev)) {
power_supply_unregister(new_supply);
return;
}
drvdata->battery = new_supply;
}
static void corsair_void_headset_connected(struct corsair_void_drvdata *drvdata)
{
schedule_work(&drvdata->battery_add_work);
schedule_delayed_work(&drvdata->delayed_firmware_work,
msecs_to_jiffies(100));
}
static void corsair_void_headset_disconnected(struct corsair_void_drvdata *drvdata)
{
schedule_work(&drvdata->battery_remove_work);
corsair_void_set_unknown_wireless_data(drvdata);
corsair_void_set_unknown_batt(drvdata);
}
/*
* Driver setup, probing and HID event handling
*/
static DEVICE_ATTR_RO(fw_version_receiver);
static DEVICE_ATTR_RO(fw_version_headset);
static DEVICE_ATTR_RO(microphone_up);
static DEVICE_ATTR_RO(sidetone_max);
static DEVICE_ATTR_WO(send_alert);
static DEVICE_ATTR_WO(set_sidetone);
static struct attribute *corsair_void_attrs[] = {
&dev_attr_fw_version_receiver.attr,
&dev_attr_fw_version_headset.attr,
&dev_attr_microphone_up.attr,
&dev_attr_send_alert.attr,
&dev_attr_set_sidetone.attr,
&dev_attr_sidetone_max.attr,
NULL,
};
static const struct attribute_group corsair_void_attr_group = {
.attrs = corsair_void_attrs,
};
static int corsair_void_probe(struct hid_device *hid_dev,
const struct hid_device_id *hid_id)
{
int ret;
struct corsair_void_drvdata *drvdata;
char *name;
if (!hid_is_usb(hid_dev))
return -EINVAL;
drvdata = devm_kzalloc(&hid_dev->dev, sizeof(*drvdata),
GFP_KERNEL);
if (!drvdata)
return -ENOMEM;
hid_set_drvdata(hid_dev, drvdata);
dev_set_drvdata(&hid_dev->dev, drvdata);
drvdata->dev = &hid_dev->dev;
drvdata->hid_dev = hid_dev;
drvdata->is_wired = hid_id->driver_data == CORSAIR_VOID_WIRED;
drvdata->sidetone_max = CORSAIR_VOID_SIDETONE_MAX_WIRELESS;
if (drvdata->is_wired)
drvdata->sidetone_max = CORSAIR_VOID_SIDETONE_MAX_WIRED;
/* Set initial values for no wireless headset attached */
/* If a headset is attached, it'll be prompted later */
corsair_void_set_unknown_wireless_data(drvdata);
corsair_void_set_unknown_batt(drvdata);
/* Receiver version won't be reset after init */
/* Headset version already set via set_unknown_wireless_data */
drvdata->fw_receiver_major = 0;
drvdata->fw_receiver_minor = 0;
ret = hid_parse(hid_dev);
if (ret) {
hid_err(hid_dev, "parse failed (reason: %d)\n", ret);
return ret;
}
name = devm_kasprintf(drvdata->dev, GFP_KERNEL,
"corsair-void-%d-battery", hid_dev->id);
if (!name)
return -ENOMEM;
drvdata->battery_desc.name = name;
drvdata->battery_desc.type = POWER_SUPPLY_TYPE_BATTERY;
drvdata->battery_desc.properties = corsair_void_battery_props;
drvdata->battery_desc.num_properties = ARRAY_SIZE(corsair_void_battery_props);
drvdata->battery_desc.get_property = corsair_void_battery_get_property;
drvdata->battery = NULL;
INIT_WORK(&drvdata->battery_remove_work,
corsair_void_battery_remove_work_handler);
INIT_WORK(&drvdata->battery_add_work,
corsair_void_battery_add_work_handler);
ret = devm_mutex_init(drvdata->dev, &drvdata->battery_mutex);
if (ret)
return ret;
ret = sysfs_create_group(&hid_dev->dev.kobj, &corsair_void_attr_group);
if (ret)
return ret;
/* Any failures after here will need to call hid_hw_stop */
ret = hid_hw_start(hid_dev, HID_CONNECT_DEFAULT);
if (ret) {
hid_err(hid_dev, "hid_hw_start failed (reason: %d)\n", ret);
goto failed_after_sysfs;
}
/* Refresh battery data, in case wireless headset is already connected */
INIT_DELAYED_WORK(&drvdata->delayed_status_work,
corsair_void_status_work_handler);
schedule_delayed_work(&drvdata->delayed_status_work,
msecs_to_jiffies(100));
/* Refresh firmware versions */
INIT_DELAYED_WORK(&drvdata->delayed_firmware_work,
corsair_void_firmware_work_handler);
schedule_delayed_work(&drvdata->delayed_firmware_work,
msecs_to_jiffies(100));
return 0;
failed_after_sysfs:
sysfs_remove_group(&hid_dev->dev.kobj, &corsair_void_attr_group);
return ret;
}
static void corsair_void_remove(struct hid_device *hid_dev)
{
struct corsair_void_drvdata *drvdata = hid_get_drvdata(hid_dev);
hid_hw_stop(hid_dev);
cancel_work_sync(&drvdata->battery_remove_work);
cancel_work_sync(&drvdata->battery_add_work);
if (drvdata->battery)
power_supply_unregister(drvdata->battery);
cancel_delayed_work_sync(&drvdata->delayed_firmware_work);
sysfs_remove_group(&hid_dev->dev.kobj, &corsair_void_attr_group);
}
static int corsair_void_raw_event(struct hid_device *hid_dev,
struct hid_report *hid_report,
u8 *data, int size)
{
struct corsair_void_drvdata *drvdata = hid_get_drvdata(hid_dev);
bool was_connected = drvdata->connected;
/* Description of packets are documented at the top of this file */
if (hid_report->id == CORSAIR_VOID_STATUS_REPORT_ID) {
drvdata->mic_up = FIELD_GET(CORSAIR_VOID_MIC_MASK, data[2]);
drvdata->connected = (data[3] == CORSAIR_VOID_WIRELESS_CONNECTED) ||
drvdata->is_wired;
corsair_void_process_receiver(drvdata,
FIELD_GET(CORSAIR_VOID_CAPACITY_MASK, data[2]),
data[3], data[4]);
} else if (hid_report->id == CORSAIR_VOID_FIRMWARE_REPORT_ID) {
drvdata->fw_receiver_major = data[1];
drvdata->fw_receiver_minor = data[2];
drvdata->fw_headset_major = data[3];
drvdata->fw_headset_minor = data[4];
}
/* Handle wireless headset connect / disconnect */
if ((was_connected != drvdata->connected) && !drvdata->is_wired) {
if (drvdata->connected)
corsair_void_headset_connected(drvdata);
else
corsair_void_headset_disconnected(drvdata);
}
return 0;
}
static const struct hid_device_id corsair_void_devices[] = {
/* Corsair Void Wireless */
CORSAIR_VOID_WIRELESS_DEVICE(0x0a0c),
CORSAIR_VOID_WIRELESS_DEVICE(0x0a2b),
CORSAIR_VOID_WIRELESS_DEVICE(0x1b23),
CORSAIR_VOID_WIRELESS_DEVICE(0x1b25),
CORSAIR_VOID_WIRELESS_DEVICE(0x1b27),
/* Corsair Void USB */
CORSAIR_VOID_WIRED_DEVICE(0x0a0f),
CORSAIR_VOID_WIRED_DEVICE(0x1b1c),
CORSAIR_VOID_WIRED_DEVICE(0x1b29),
CORSAIR_VOID_WIRED_DEVICE(0x1b2a),
/* Corsair Void Surround */
CORSAIR_VOID_WIRED_DEVICE(0x0a30),
CORSAIR_VOID_WIRED_DEVICE(0x0a31),
/* Corsair Void Pro Wireless */
CORSAIR_VOID_WIRELESS_DEVICE(0x0a14),
CORSAIR_VOID_WIRELESS_DEVICE(0x0a16),
CORSAIR_VOID_WIRELESS_DEVICE(0x0a1a),
/* Corsair Void Pro USB */
CORSAIR_VOID_WIRED_DEVICE(0x0a17),
CORSAIR_VOID_WIRED_DEVICE(0x0a1d),
/* Corsair Void Pro Surround */
CORSAIR_VOID_WIRED_DEVICE(0x0a18),
CORSAIR_VOID_WIRED_DEVICE(0x0a1e),
CORSAIR_VOID_WIRED_DEVICE(0x0a1f),
/* Corsair Void Elite Wireless */
CORSAIR_VOID_WIRELESS_DEVICE(0x0a51),
CORSAIR_VOID_WIRELESS_DEVICE(0x0a55),
CORSAIR_VOID_WIRELESS_DEVICE(0x0a75),
/* Corsair Void Elite USB */
CORSAIR_VOID_WIRED_DEVICE(0x0a52),
CORSAIR_VOID_WIRED_DEVICE(0x0a56),
/* Corsair Void Elite Surround */
CORSAIR_VOID_WIRED_DEVICE(0x0a53),
CORSAIR_VOID_WIRED_DEVICE(0x0a57),
{}
};
MODULE_DEVICE_TABLE(hid, corsair_void_devices);
static struct hid_driver corsair_void_driver = {
.name = "hid-corsair-void",
.id_table = corsair_void_devices,
.probe = corsair_void_probe,
.remove = corsair_void_remove,
.raw_event = corsair_void_raw_event,
};
module_hid_driver(corsair_void_driver);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Stuart Hayhurst <stuart.a.hayhurst@gmail.com>");
MODULE_DESCRIPTION("HID driver for Corsair Void headsets");