Enter subsystem questions-general Linux technology-Linux technology and application information. The following is a detailed description. I recently learned about the input subsystem and found that initialization is required before the input device is registered. Several variables in the initialization process do not know their purpose. Please give me some advice. Thank you for your consideration.
Input_dev-> dev. parent = & client-> dev;
What are the three variable table shards?
Input_dev-> absbit [0] = BIT (ABS_X) | BIT (ABS_Y );
This is an event type. I don't understand it. Please give me some advice. Thank you!
What is the input_set_drvdata (struct input_dev * dev) function used?
The misc_register () function is used to register a miscellaneous device. It only defines some file operation interfaces and does not understand the role of this registration?
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