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Old 09-06-2007   #1 (permalink)
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USB Host driver
Hi ,
I want to write a USB host side driver.
To start with I want to know the flow of what an USB Host will do when
it detects a device?

Also I want to know whether I can use the usb_skeleton.c as my base code to develop usb host driver!!!

Looking for all your help

T.Senthil
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Old 09-07-2007   #2 (permalink)
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Hi,

Yes it would be a good start, if you start writing USB driver with usb skeleton.c.

It also depends for which USB device you are writing a driver.

please go through the below link it may help you,

How to Write a Linux USB Device Driver | Linux Journal

Writing a Simple USB Driver | Linux Journal

Usb Device Drivers

Programming Guide for Linux USB Device Drivers

And go through the book Linux device drivers by Corbet and Rubini.
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Old 09-07-2007   #3 (permalink)
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USB Host driver
Hello
Thanks for ur reply.

Well I compiled usb-skeleton.c and usb-skeleton.ko got created.

But when i give insmod and rmrmod it gives the below error

insmod usb-skeleton.ko
insmod: error inserting 'usb-skeleton.ko': -1 File exists
rmmod usb-skeleton
ERROR: Removing 'usb_skeleton': Device or resource busy

Looking for help to remove this error.
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Old 09-12-2007   #4 (permalink)
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Hi Senthil,

Can you pelase paste your code here, so that it will be very easy for me to fix it.
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