代码拉取完成，页面将自动刷新
After running make command, there will be two modules:
The fist module is our fake regulator driver, the second one is used to create a plateform device that matches our first module. This way, one can avoid updating the devicetree.
# insmod dummy-regulator.ko
# insmod reg-ins.ko
After loading both modules, one can print debug message, and see something like below:
#dmesg
[...]
Dummy Core: Voltage range but no REGULATOR_CHANGE_VOLTAGE
Dummy Core: at 850 mV
Dummy Fixed: 1300 mV
Before loading the module, there were no regulator.13 nor regulator.14
$ ls /sys/class/regulator/
regulator.0 regulator.11 regulator.3 regulator.6 regulator.9
regulator.1 regulator.12 regulator.4 regulator.7
regulator.10 regulator.2 regulator.5 regulator.8
After loading modules,
# ls /sys/class/regulator/
regulator.0 regulator.11 regulator.14 regulator.4 regulator.7
regulator.1 regulator.12 regulator.2 regulator.5 regulator.8
regulator.10 regulator.13 regulator.3 regulator.6 regulator.9
$ ls -l /sys/class/regulator/
[...]
lrwxrwxrwx 1 root root 0 oct. 11 17:52 regulator.13 -> ../../devices/platform/regulator-dummy.0/regulator/regulator.13
lrwxrwxrwx 1 root root 0 oct. 11 17:52 regulator.14 -> ../../devices/platform/regulator-dummy.0/regulator/regulator.14
One can also check some parameters, as defined in the driver:
$ cat /sys/class/regulator/regulator.13/name
Dummy Core
$ cat /sys/class/regulator/regulator.14/name
Dummy Fixed
$ cat /sys/class/regulator/regulator.14/type
voltage
$ cat /sys/class/regulator/regulator.14/microvolts
1300000
$ cat /sys/class/regulator/regulator.13/microvolts
850000
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