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Commit 5128a66c authored by Ondrej Zary's avatar Ondrej Zary Committed by Greg Kroah-Hartman
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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: default avatarOndrej Zary <linux@rainbow-software.org>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent 7b4361f0

drivers/usb/serial/ark3116.c

+23 −1
Original line number Diff line number Diff line
@@ -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,

		    0x000B);



	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);