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Difference between TTY and serial drivers
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Andy Falanga
Apr 22, 2016, 2:30:14 PM4/22/16
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Hi,
I have been tasked with writing a driver for a UART. This is to be my first driver for this type of device. I had just assumed that I'd be writing a tty driver. I read Ch 18 of LDD 3 and then grabbed the source for for that section/chapter from github for reference. As I was going over the code, I noticed that the examples have a tiny_serial.ko and a tiny_tty.ko driver. It would seem that there is a subtle difference.
I would like to know what that difference is. Chapter 18 didn't mention serial driver "proper" but primarily used the nomenclature "tty". I get the sense, from reading various things on-line and whatnot, that it's "the thing" now to write serial drivers for what I need versus a tty driver. I'd like to confirm this, but also get a better understanding of what the differences are.
Thanks.
I have been tasked with writing a driver for a UART. This is to be my first driver for this type of device. I had just assumed that I'd be writing a tty driver. I read Ch 18 of LDD 3 and then grabbed the source for for that section/chapter from github for reference. As I was going over the code, I noticed that the examples have a tiny_serial.ko and a tiny_tty.ko driver. It would seem that there is a subtle difference.
I would like to know what that difference is. Chapter 18 didn't mention serial driver "proper" but primarily used the nomenclature "tty". I get the sense, from reading various things on-line and whatnot, that it's "the thing" now to write serial drivers for what I need versus a tty driver. I'd like to confirm this, but also get a better understanding of what the differences are.
Thanks.
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