Commit 5128a66c authored by Ondrej Zary's avatar Ondrej Zary Committed by Greg Kroah-Hartman

USB: ark3116: add IrDA support for Gembird UIR-22

Add IrDA support to ark3116 driver.  This makes Gembird UIR-22 USB to IrDA
adapter work (vendor ID 0x18ec, device ID 0x3118).  This adapter contains
ARK3116T USB serial chip and an IrDA transceiver, thus a command like
"irattach /dev/ttyUSB0 -s" is needed.

All magic numbers were captured using usbsnoop from windows driver that
came with the device.
Signed-off-by: 's avatarOndrej Zary <>
Signed-off-by: 's avatarAndrew Morton <>
Signed-off-by: 's avatarGreg Kroah-Hartman <>
parent 7b4361f0
......@@ -31,10 +31,20 @@ static int debug;
static struct usb_device_id id_table [] = {
{ USB_DEVICE(0x6547, 0x0232) },
{ USB_DEVICE(0x18ec, 0x3118) }, /* USB to IrDA adapter */
{ },
MODULE_DEVICE_TABLE(usb, id_table);
static int is_irda(struct usb_serial *serial)
struct usb_device *dev = serial->dev;
if (le16_to_cpu(dev->descriptor.idVendor) == 0x18ec &&
le16_to_cpu(dev->descriptor.idProduct) == 0x3118)
return 1;
return 0;
static inline void ARK3116_SND(struct usb_serial *serial, int seq,
__u8 request, __u8 requesttype,
__u16 value, __u16 index)
......@@ -84,11 +94,21 @@ static int ark3116_attach(struct usb_serial *serial)
return -ENOMEM;
if (is_irda(serial))
dbg("IrDA mode");
/* 3 */
ARK3116_SND(serial, 3, 0xFE, 0x40, 0x0008, 0x0002);
ARK3116_SND(serial, 4, 0xFE, 0x40, 0x0008, 0x0001);
ARK3116_SND(serial, 5, 0xFE, 0x40, 0x0000, 0x0008);
ARK3116_SND(serial, 6, 0xFE, 0x40, 0x0000, 0x000B);
ARK3116_SND(serial, 6, 0xFE, 0x40, is_irda(serial) ? 0x0001 : 0x0000,
if (is_irda(serial)) {
ARK3116_SND(serial, 1001, 0xFE, 0x40, 0x0000, 0x000C);
ARK3116_SND(serial, 1002, 0xFE, 0x40, 0x0041, 0x000D);
ARK3116_SND(serial, 1003, 0xFE, 0x40, 0x0001, 0x000A);
/* <-- seq7 */
ARK3116_RCV(serial, 7, 0xFE, 0xC0, 0x0000, 0x0003, 0x00, buf);
......@@ -125,6 +145,8 @@ static int ark3116_attach(struct usb_serial *serial)
ARK3116_SND(serial, 147, 0xFE, 0x40, 0x0083, 0x0003);
ARK3116_SND(serial, 148, 0xFE, 0x40, 0x0038, 0x0000);
ARK3116_SND(serial, 149, 0xFE, 0x40, 0x0001, 0x0001);
if (is_irda(serial))
ARK3116_SND(serial, 1004, 0xFE, 0x40, 0x0000, 0x0009);
ARK3116_SND(serial, 150, 0xFE, 0x40, 0x0003, 0x0003);
ARK3116_RCV(serial, 151, 0xFE, 0xC0, 0x0000, 0x0004, 0x03, buf);
ARK3116_SND(serial, 152, 0xFE, 0x40, 0x0000, 0x0003);
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