int os_resetusb(usbdevice* kb, const char* file, int line){
TEST_RESET(usbunclaim(kb, 1, HAS_FEATURES(kb, FEAT_RGB)));
TEST_RESET(ioctl(kb->handle, USBDEVFS_RESET));
TEST_RESET(usbclaim(kb, HAS_FEATURES(kb, FEAT_RGB)));
// Success!
return 0;
}
void os_closeusb(usbdevice* kb){
usbunclaim(kb, 0, HAS_FEATURES(kb, FEAT_RGB));
close(kb->handle);
udev_device_unref(kb->udev);
kb->handle = 0;
kb->udev = 0;
kbsyspath[INDEX_OF(kb, keyboard)][0] = 0;
}
int revertusb(usbdevice* kb){
if(NEEDS_FW_UPDATE(kb))
return 0;
if(!HAS_FEATURES(kb, FEAT_RGB)){
nk95cmd(kb, NK95_HWON);
return 0;
}
if(setactive(kb, 0))
return -1;
return 0;
}
int _usbinput(usbdevice* kb, uchar* message, const char* file, int line){
if(!IS_CONNECTED(kb) || !HAS_FEATURES(kb, FEAT_RGB))
return -1;
CFIndex length = MSG_SIZE;
IOReturn res = IOHIDDeviceGetReport(kb->handle, kIOHIDReportTypeFeature, 0, message, &length);
kb->lastError = res;
if(res != kIOReturnSuccess && res != 0xe0004051){
printf("usbinput (%s:%d): Got return value 0x%x\n", file, line, res);
return 0;
}
if(length != MSG_SIZE)
printf("usbinput (%s:%d): Read %d bytes (expected %d)\n", file, line, (int)length, MSG_SIZE);
return length;
}
int _usbdequeue(usbdevice* kb, const char* file, int line){
if(kb->queuecount == 0 || !kb->handle || !HAS_FEATURES(kb, FEAT_RGB))
return -1;
IOReturn res = IOHIDDeviceSetReport(kb->handle, kIOHIDReportTypeFeature, 0, kb->queue[0], MSG_SIZE);
// Rotate queue
uchar* first = kb->queue[0];
for(int i = 1; i < QUEUE_LEN; i++)
kb->queue[i - 1] = kb->queue[i];
kb->queue[QUEUE_LEN - 1] = first;
kb->queuecount--;
kb->lastError = res;
if(res != kIOReturnSuccess && res != 0xe0004051){ // Can't find e0004051 documented, but it seems to be a harmless error, so ignore it.
printf("usbdequeue (%s:%d): Got return value 0x%x\n", file, line, res);
return 0;
}
return MSG_SIZE;
}
void reportcallback(void* context, IOReturn result, void* sender, IOHIDReportType reporttype, uint32_t reportid, uint8_t* data, CFIndex length){
usbdevice* kb = context;
if(HAS_FEATURES(kb, FEAT_RGB)){
switch(length){
case 8:
// RGB EP 1: 6KRO (BIOS mode) input
hid_translate(kb->kbinput, -1, 8, kb->urbinput);
inputupdate(kb);
break;
case 21:
case 5:
// RGB EP 2: NKRO (non-BIOS) input. Accept only if keyboard is inactive
if(!kb->active){
hid_translate(kb->kbinput, -2, 21, kb->urbinput + 8);
inputupdate(kb);
}
break;
case MSG_SIZE:
// RGB EP 3: Corsair input
inputupdate(kb);
break;
}
} else {
switch(length){
case 8:
// Non-RGB EP 1: 6KRO input
hid_translate(kb->kbinput, 1, 8, kb->urbinput);
inputupdate(kb);
break;
case 4:
// Non-RGB EP 2: media keys
hid_translate(kb->kbinput, 2, 4, kb->urbinput + 8);
inputupdate(kb);
break;
case 15:
// Non-RGB EP 3: NKRO input
hid_translate(kb->kbinput, 3, 15, kb->urbinput + 8 + 4);
inputupdate(kb);
break;
}
}
}
static void intreport(void* context, IOReturn result, void* sender, IOHIDReportType reporttype, uint32_t reportid, uint8_t* data, CFIndex length){
usbdevice* kb = context;
pthread_mutex_lock(imutex(kb));
if(IS_MOUSE(kb->vendor, kb->product)){
if(length == 10)
hid_mouse_translate(kb->input.keys, &kb->input.rel_x, &kb->input.rel_y, -2, length, data);
} else if(HAS_FEATURES(kb, FEAT_RGB)){
switch(length){
case 8:
// RGB EP 1: 6KRO (BIOS mode) input
hid_kb_translate(kb->input.keys, -1, length, data);
break;
case 21:
case 5:
// RGB EP 2: NKRO (non-BIOS) input. Accept only if keyboard is inactive
if(!kb->active)
hid_kb_translate(kb->input.keys, -2, length, data);
break;
case MSG_SIZE:
// RGB EP 3: Corsair input
memcpy(kb->input.keys, data, N_KEYBYTES_KB);
break;
}
} else {
switch(length){
case 8:
// Non-RGB EP 1: 6KRO input
hid_kb_translate(kb->input.keys, 1, length, data);
break;
case 4:
// Non-RGB EP 2: media keys
hid_kb_translate(kb->input.keys, 2, length, data);
break;
case 15:
// Non-RGB EP 3: NKRO input
hid_kb_translate(kb->input.keys, 3, length, data);
break;
}
}
inputupdate(kb);
pthread_mutex_unlock(imutex(kb));
}
int usbunclaim(usbdevice* kb, int resetting){
int handle = kb->handle - 1;
int count = kb->epcount;
for(int i = 0; i < count; i++)
ioctl(handle, USBDEVFS_RELEASEINTERFACE, &i);
// For RGB keyboards, the kernel driver should only be reconnected to interfaces 0 and 1 (HID), and only if we're not about to do a USB reset.
// Reconnecting any of the others causes trouble.
if(!resetting){
struct usbdevfs_ioctl ctl = { 0, USBDEVFS_CONNECT, 0 };
ioctl(handle, USBDEVFS_IOCTL, &ctl);
ctl.ifno = 1;
ioctl(handle, USBDEVFS_IOCTL, &ctl);
// Also reconnect iface #2 (HID) for non-RGB keyboards
if(!HAS_FEATURES(kb, FEAT_RGB)){
ctl.ifno = 2;
ioctl(handle, USBDEVFS_IOCTL, &ctl);
}
}
return 0;
}
int os_setupusb(usbdevice* kb){
// Copy device description and serial
struct udev_device* dev = kb->udev;
const char* name = udev_device_get_sysattr_value(dev, "product");
if(name)
strncpy(kb->name, name, KB_NAME_LEN);
const char* serial = udev_device_get_sysattr_value(dev, "serial");
if(serial)
strncpy(kb->serial, serial, SERIAL_LEN);
// Copy firmware version (needed to determine USB protocol)
const char* firmware = udev_device_get_sysattr_value(dev, "bcdDevice");
if(firmware)
sscanf(firmware, "%hx", &kb->fwversion);
else
kb->fwversion = 0;
ckb_info("Connecting %s (S/N: %s)\n", kb->name, kb->serial);
// Claim the USB interfaces
if(usbclaim(kb, HAS_FEATURES(kb, FEAT_RGB))){
ckb_err("Failed to claim interface: %s\n", strerror(errno));
return -1;
}
return 0;
}
int os_setupusb(usbdevice* kb){
// Copy device description and serial
struct udev_device* dev = kb->udev;
const char* name = udev_device_get_sysattr_value(dev, "product");
if(name)
strncpy(kb->name, name, KB_NAME_LEN);
strtrim(kb->name);
const char* serial = udev_device_get_sysattr_value(dev, "serial");
if(serial)
strncpy(kb->serial, serial, SERIAL_LEN);
strtrim(kb->serial);
// Copy firmware version (needed to determine USB protocol)
const char* firmware = udev_device_get_sysattr_value(dev, "bcdDevice");
if(firmware)
sscanf(firmware, "%hx", &kb->fwversion);
else
kb->fwversion = 0;
int index = INDEX_OF(kb, keyboard);
ckb_info("Connecting %s at %s%d\n", kb->name, devpath, index);
// Claim the USB interfaces
const char* ep_str = udev_device_get_sysattr_value(dev, "bNumInterfaces");
kb->epcount = 0;
if(ep_str)
sscanf(ep_str, "%d", &kb->epcount);
if(kb->epcount == 0){
// This shouldn't happen, but if it does, assume EP count based on what the device is supposed to have
kb->epcount = (HAS_FEATURES(kb, FEAT_RGB) ? 4 : 3);
ckb_warn("Unable to read endpoint count from udev, assuming %d...\n", kb->epcount);
}
if(usbclaim(kb)){
ckb_err("Failed to claim interfaces: %s\n", strerror(errno));
return -1;
}
return 0;
}
void os_keypress(usbdevice* kb, int scancode, int down){
if(scancode & SCAN_MOUSE){
if(scancode == BTN_WHEELUP){
if(down)
postevent_wheel(kb->event, !!(kb->features & FEAT_MOUSEACCEL), 1);
return;
} else if(scancode == BTN_WHEELDOWN){
if(down)
postevent_wheel(kb->event, !!(kb->features & FEAT_MOUSEACCEL), -1);
return;
}
int button = scancode & ~SCAN_MOUSE;
// Reverse or collapse left/right buttons if the system preferences say so
int mode;
if(IOHIDGetMouseButtonMode(kb->event, &mode) == kIOReturnSuccess){
if(mode == kIOHIDButtonMode_ReverseLeftRightClicks && button == 0)
button = 1;
else if(mode != kIOHIDButtonMode_EnableRightClick && button == 1)
button = 0;
}
postevent_mb(kb->event, button, down);
if(down)
kb->mousestate |= (1 << button);
else
kb->mousestate &= ~(1 << button);
return;
}
// Some boneheaded Apple engineers decided to reverse kVK_ANSI_Grave and kVK_ISO_Section on the 105-key layouts...
if(!HAS_ANY_FEATURE(kb, FEAT_LMASK)){
// If the layout hasn't been set yet, it can be auto-detected from certain keys
if(scancode == KEY_BACKSLASH_ISO || scancode == KEY_102ND)
kb->features |= FEAT_ISO;
else if(scancode == KEY_BACKSLASH)
kb->features |= FEAT_ANSI;
}
if(scancode == KEY_BACKSLASH_ISO)
scancode = KEY_BACKSLASH;
if(HAS_FEATURES(kb, FEAT_ISO)){
// Compensate for key reversal
if(scancode == KEY_GRAVE)
scancode = KEY_102ND;
else if(scancode == KEY_102ND)
scancode = KEY_GRAVE;
}
// Check for modifier keys and update flags
int isMod = 0;
IOOptionBits mod = 0;
if(scancode == KEY_CAPSLOCK){
if(down)
kb->modifiers ^= NX_ALPHASHIFTMASK;
isMod = 1;
}
else if(scancode == KEY_LEFTSHIFT) mod = NX_DEVICELSHIFTKEYMASK;
else if(scancode == KEY_RIGHTSHIFT) mod = NX_DEVICERSHIFTKEYMASK;
else if(scancode == KEY_LEFTCTRL) mod = NX_DEVICELCTLKEYMASK;
else if(scancode == KEY_RIGHTCTRL) mod = NX_DEVICERCTLKEYMASK;
else if(scancode == KEY_LEFTMETA) mod = NX_DEVICELCMDKEYMASK;
else if(scancode == KEY_RIGHTMETA) mod = NX_DEVICERCMDKEYMASK;
else if(scancode == KEY_LEFTALT) mod = NX_DEVICELALTKEYMASK;
else if(scancode == KEY_RIGHTALT) mod = NX_DEVICERALTKEYMASK;
if(mod){
// Update global modifiers
if(down)
mod |= kb->modifiers;
else
mod = kb->modifiers & ~mod;
if((mod & NX_DEVICELSHIFTKEYMASK) || (mod & NX_DEVICERSHIFTKEYMASK)) mod |= NX_SHIFTMASK; else mod &= ~NX_SHIFTMASK;
if((mod & NX_DEVICELCTLKEYMASK) || (mod & NX_DEVICERCTLKEYMASK)) mod |= NX_CONTROLMASK; else mod &= ~NX_CONTROLMASK;
if((mod & NX_DEVICELCMDKEYMASK) || (mod & NX_DEVICERCMDKEYMASK)) mod |= NX_COMMANDMASK; else mod &= ~NX_COMMANDMASK;
if((mod & NX_DEVICELALTKEYMASK) || (mod & NX_DEVICERALTKEYMASK)) mod |= NX_ALTERNATEMASK; else mod &= ~NX_ALTERNATEMASK;
kb->modifiers = mod;
kb->lastkeypress = KEY_NONE;
isMod = 1;
} else if(!isMod){
// For any other key, trigger key repeat
if(down){
long repeat = repeattime(kb->event, 1);
if(repeat > 0){
kb->lastkeypress = scancode;
clock_gettime(CLOCK_MONOTONIC, &kb->keyrepeat);
timespec_add(&kb->keyrepeat, repeat);
} else
kb->lastkeypress = KEY_NONE;
} else
kb->lastkeypress = KEY_NONE;
}
postevent_kp(kb->event, kb->modifiers, scancode, down, isMod, 0);
}