October 2017
Intermediate to advanced
586 pages
14h 8m
English
Content preview from Linux Device Drivers Development
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PMIC/producer driver interface
The producer is the device generating the regulated voltage or current. The name of such a device is PMIC and it can be used for power sequencing, battery management, DC-to-DC conversion, or simple power switches (on/off). It regulates the output power from the input power, with the help of (and under) software control.
It deals with regulator drivers, and especially the producer PMIC side, which requires a few headers:
#include <linux/platform_device.h> #include <linux/regulator/driver.h> #include <linux/regulator/of_regulator.h>