On 2/9/19 7:11 PM, Johan Hovold wrote: > On Sat, Feb 09, 2019 at 02:14:21PM +0330, Ebrahim Byagowi wrote: >> On 2/9/19 1:16 PM, Johan Hovold wrote: >>> On Sat, Feb 09, 2019 at 12:18:40PM +0330, ebrahim@xxxxxxx wrote: >>>> From: Ebrahim Byagowi <ebrahim@xxxxxxx> >>>> >>>> This makes Delock Infrared adapter to work as a USB to Serial device. >>>> --- >>>> drivers/usb/serial/pl2303.c | 1 + >>>> drivers/usb/serial/pl2303.h | 3 +++ >>>> 2 files changed, 4 insertions(+) > >>>> +/* Delock Infrared Adapter */ >>>> +#define DELOCK_VENDOR_ID 0x1685 >>>> +#define DELOCK_PRODUCT_ID 0x2000 >>> Please post the output of lsusb -v for this device, and perhaps also a >>> log from when connecting the device with driver debugging enabled. >> lsusb -v -d 1685:0200 >> >> Bus 002 Device 019: ID 1685:0200 Delock Infrared adapter >> Couldn't open device, some information will be missing >> Device Descriptor: >> bLength 18 >> bDescriptorType 1 >> bcdUSB 1.10 >> bDeviceClass 255 Vendor Specific Class >> bDeviceSubClass 1 >> bDeviceProtocol 0 >> bMaxPacketSize0 8 >> idVendor 0x1685 Delock >> idProduct 0x0200 Infrared adapter >> bcdDevice 0.08 >> iManufacturer 0 >> iProduct 0 >> iSerial 0 >> bNumConfigurations 1 >> Configuration Descriptor: >> bLength 9 >> bDescriptorType 2 >> wTotalLength 0x0027 >> bNumInterfaces 1 >> bConfigurationValue 1 >> iConfiguration 0 >> bmAttributes 0x80 >> (Bus Powered) >> MaxPower 440mA >> Interface Descriptor: >> bLength 9 >> bDescriptorType 4 >> bInterfaceNumber 0 >> bAlternateSetting 0 >> bNumEndpoints 3 >> bInterfaceClass 0 >> bInterfaceSubClass 0 >> bInterfaceProtocol 0 >> iInterface 0 >> Endpoint Descriptor: >> bLength 7 >> bDescriptorType 5 >> bEndpointAddress 0x81 EP 1 IN >> bmAttributes 3 >> Transfer Type Interrupt >> Synch Type None >> Usage Type Data >> wMaxPacketSize 0x000a 1x 10 bytes >> bInterval 1 >> Endpoint Descriptor: >> bLength 7 >> bDescriptorType 5 >> bEndpointAddress 0x02 EP 2 OUT >> bmAttributes 2 >> Transfer Type Bulk >> Synch Type None >> Usage Type Data >> wMaxPacketSize 0x0040 1x 64 bytes >> bInterval 0 >> Endpoint Descriptor: >> bLength 7 >> bDescriptorType 5 >> bEndpointAddress 0x83 EP 3 IN >> bmAttributes 2 >> Transfer Type Bulk >> Synch Type None >> Usage Type Data >> wMaxPacketSize 0x0040 1x 64 bytes >> bInterval 0 > These descriptors do no look like they come from a pl2303 device (e.g. > the device descriptor class and protocol is 255/1/0 and not 0/0/0). > >> I've uploaded a screenshot here >> https://commons.wikimedia.org/wiki/File:A_modified_kernel_screenshot_on_QEMU.png >> which shows it understands a remote control commands also. > It shows that you receive something over the bulk-in endpoint at the > default line speed, but those -EPIPE errors also tells us that this is > not a pl2303 device. Oh, understandable. And very sorry that I was misleading here. > > I suspect there are further errors in the log after you've opened the > device which can involve setting the baudrate. > >>> How did you determine that this a pl2303 device? >> I tried to find a compatible driver from different IR adapters I have >> around, one of them a 0df7:0620 which identifies itself as a `Mobile >> Action Technology, Inc. MA-620 Infrared Adapter`, enlisted on the same >> header, uses the driver and I found the same driver works for this dongle. > Some quick searching for the MA-620 descriptors show that those are > indeed from a pl2303 and are quite different from the ones you posted > above: > > https://sparcher.blogspot.com/2016/11/howto-some-experience-with-usb-irda.html > > There are other usb-serial chips that can be found in other ir-devices > too. > > Would you be able to open the device to see if you can identify a > generic usb-serial chip inside? Here is a picture of its inside[1] and that 3606 apparently is the usb to serial chip. We suspected it is related to[2] but its pins doesn't match and I couldn't yet test the module provided there is related for some reason so any pointer will be nice. Thanks! [1]: https://commons.wikimedia.org/wiki/File:Infrared_Device,_VID1685_PID0200.jpg [2]: https://www.asix.com.tw/products.php?op=pItemdetail&PItemID=112;74;109&PLine=74 > > Johan > >
