How to know the USB port number?
I am using a USB hub with 7 downstream ports.
I am connecting 4 of the same devices(custom class device) on 4 ports.
I have a requirement to know to which physical port is a device connected, cause I have to number them accordingly in the application GUI.
I found an ioctl USBDEVFS_HUB_PORTINFO, in "usbdevice_fs.h" which does give me this information.
"hub_ioctl" does give us this information.
now I don't know how to call this ioctl from my application.
Do I have to make any provision in my device driver to talk to the hub driver? if so can anyone please explain me how do we do that.
I did google on this but it seems to be very trivial, so could not find any information.
Note: am using 2.6.22 on i.Mx21S target
Thanks in advance
Special Reports: DevOps
Have projects in development that need help? Have a great development operation in place that can ALWAYS be better? Regardless of where you are in your DevOps process, Linux Journal can help!
With deep focus on Collaborative Development, Continuous Testing and Release & Deployment, we offer here the DEFINITIVE DevOps for Dummies, a mobile Application Development Primer, advice & help from the experts, plus a host of other books, videos, podcasts and more. All free with a quick, one-time registration. Start browsing now...
- Dealing with Boundary Issues
- Vagrant Simplified
- Libreboot on an X60, Part I: the Setup
- SUSE – “Will not diverge from its Open Source roots!”
- System Status as SMS Text Messages
- Bluetooth Hacks
- October 2015 Issue of Linux Journal: Raspberry Pi
- Disney's Linux Light Bulbs (Not a "Luxo Jr." Reboot)
- New Products
- Linux and the Internet of Things