platform_device and driver misunderstanding
I`m doing my embedded project with bf537 (on BF537-STAMP), with kernel 18.104.22.168.
Through digging over several drivers, LDD3 and other stuff, I realized that I`m totally confused.
The issue is that I`m writing network(ethernet) driver, using spi(existing spidev or over) driver. By now I have a driver, that is capable to create ethx interface and fill in information(all of these is fully described in LDD3). But what I can`t find, is the way, how I can use ANOTHER, existing spi driver. Probe() function gets struct platform_device, which(as i know) i fill in a special file, there rosources, devices and other staff is allocated and registerd, etc... So, if i have to get an access to spi(spi resources), i have to declare them, make a master....so to write a nes spi driver. But i want to use existing.
Also, looking at similar driver(bfin_mac) i found something useful, but still it creates MII master, it doesn`t take it from "somewhere in the kernel".
I understand, that what i wrote may be wrong, but that is what I found using a set of drivers from different versions of the kernel.
Could someone explain the mechanism driver ONE may use loaded in the kernel driver TWO?
Thank you very much!!
|Red Hat Enterprise Linux 7.1 beta available on IBM Power Platform||Jan 23, 2015|
|Designing with Linux||Jan 22, 2015|
|Wondershaper—QOS in a Pinch||Jan 21, 2015|
|Ideal Backups with zbackup||Jan 19, 2015|
|Non-Linux FOSS: Animation Made Easy||Jan 14, 2015|
|Internet of Things Blows Away CES, and it May Be Hunting for YOU Next||Jan 12, 2015|
- Designing with Linux
- Wondershaper—QOS in a Pinch
- Red Hat Enterprise Linux 7.1 beta available on IBM Power Platform
- Internet of Things Blows Away CES, and it May Be Hunting for YOU Next
- Ideal Backups with zbackup
- Slow System? iotop Is Your Friend
- Hats Off to Mozilla
- Non-Linux FOSS: Animation Made Easy
- diff -u: What's New in Kernel Development
- New Products
Editorial Advisory Panel
Thank you to our 2014 Editorial Advisors!
- Jeff Parent
- Brad Baillio
- Nick Baronian
- Steve Case
- Chadalavada Kalyana
- Caleb Cullen
- Keir Davis
- Michael Eager
- Nick Faltys
- Dennis Frey
- Philip Jacob
- Jay Kruizenga
- Steve Marquez
- Dave McAllister
- Craig Oda
- Mike Roberts
- Chris Stark
- Patrick Swartz
- David Lynch
- Alicia Gibb
- Thomas Quinlan
- Carson McDonald
- Kristen Shoemaker
- Charnell Luchich
- James Walker
- Victor Gregorio
- Hari Boukis
- Brian Conner
- David Lane