[PATCH v2] [resend] ark3116: add IrDA support (for Gembird UIR-22)

[Ondrej Zary]

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: Ondrej Zary <li...@rainbow-software.org>

--- linux-2.6.30-orig/drivers/usb/serial/ark3116.c 2009-07-19 19:21:54.000000000 +0200
+++ linux/drivers/usb/serial/ark3116.c 2009-08-01 22:04:48.000000000 +0200
@@ -31,10 +31,20 @@

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;
+}
+
struct ark3116_private {
spinlock_t lock;
u8 termios_initialized;
@@ -100,11 +110,21 @@
goto cleanup;
}

+ 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);
@@ -141,6 +161,8 @@
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);

--
Ondrej Zary
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[Anand Gadiyar]

On Tue, Aug 4, 2009 at 4:03 PM, Ondrej Zary<li...@rainbow-software.org> wrote:
> 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: Ondrej Zary <li...@rainbow-software.org>

Hi,

Oliver Neukum had sent out a "looking for testers" mail for
autosuspend for this driver [1].

I had a USB-IR convertor with this chip inside but could not get it to
work before to test this. Will try and find the hardware and test your
patch as well as his.

Since you have this device as well, maybe you could help test autosuspend too.

Thanks,
Anand

[1] <http://lists.openwall.net/linux-kernel/2009/02/06/409>

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