TIPS: a small problem with the mini2440 touch screen driver in linux

Source: Internet
Author: User
TIPS: a small problem with the mini2440 touch screen driver in linux-Linux general technology-Linux technology and application information. For more information, see the following. I can see the following lines of the 2440 touch screen driver in the kernel touch screen source code:

S3c2410_gpio_cfgpin (S3C2410_GPG12, S3C2410_GPG12_XMON );
S3c2410_gpio_cfgpin (S3C2410_GPG13, S3C2410_GPG13_nXPON );
S3c2410_gpio_cfgpin (S3C2410_GPG14, S3C2410_GPG14_YMON );
S3c2410_gpio_cfgpin (S3C2410_GPG15, S3C2410_GPG15_nYPON );

On the surface, these lines set GPG12, GPG13, GPG14, and GPG15 to 11. I read the data manual, and 11 is reserved.

What are the functions of these lines? Why do we set it like this?

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