40 lines
860 B
C
40 lines
860 B
C
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#ifndef POWER_MANAGMENT_H
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#define POWER_MANAGMENT_H
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#include <Drivers.h>
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// io controls
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enum {
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// ioctl response with kMagicFreqID
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IDENTIFY_DEVICE = B_DEVICE_OP_CODES_END + 20001,
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// CPU Frequence:
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// get a list of freq_info, the list is terminated with a element with
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// frequency = 0
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GET_CPU_FREQ_STATES = B_DEVICE_OP_CODES_END + 20005,
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// get and set a freq_info
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GET_CURENT_CPU_FREQ_STATE,
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SET_CPU_FREQ_STATE,
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// start watching for frequency changes, ioctl blocks until the frequency
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// has changed
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WATCH_CPU_FREQ,
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// stop all watching ioctl, ioctl return B_ERROR
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STOP_WATCHING_CPU_FREQ
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};
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// CPU Frequence:
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// magic id returned by IDENTIFY_DEVICE
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const uint32 kMagicFreqID = 48921;
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#define MAX_CPU_FREQUENCY_STATES 10
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typedef struct {
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uint16 frequency; // [Mhz]
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uint16 volts;
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uint16 id;
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int power;
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} freq_info;
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#endif
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