On Sun, Feb 10, 2019 at 01:49:16AM +0330, Ebrahim Byagowi wrote: > > 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(+) > > 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. No, problem. > > 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. No, sorry. It's seems unlikely to be a mcs7780 given the pins. Perhaps looking closer at the windows driver and snooping traffic might provide some insights into the protocol used. A search also revealed one libusb project for this device on sourcefourge, but judging from a very quick look it also just did reads and writes over the bulk-endpoints without any control commands. But perhaps someone has done some research in this area before you. Johan > [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
