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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 582 | mauro | 1 | /* |
| 2 | * (C) 2002 - 2003 Dominik Brodowski <linux@brodo.de> |
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| 3 | * |
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| 4 | * Licensed under the terms of the GNU GPL License version 2. |
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| 5 | * |
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| 6 | * Library for common functions for Intel SpeedStep v.1 and v.2 support |
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| 7 | * |
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| 8 | * BIG FAT DISCLAIMER: Work in progress code. Possibly *dangerous* |
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| 9 | */ |
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| 10 | |||
| 11 | |||
| 12 | |||
| 13 | /* processors */ |
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| 14 | |||
| 15 | #define SPEEDSTEP_PROCESSOR_PIII_C_EARLY 0x00000001 /* Coppermine core */ |
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| 16 | #define SPEEDSTEP_PROCESSOR_PIII_C 0x00000002 /* Coppermine core */ |
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| 17 | #define SPEEDSTEP_PROCESSOR_PIII_T 0x00000003 /* Tualatin core */ |
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| 18 | #define SPEEDSTEP_PROCESSOR_P4M 0x00000004 /* P4-M with 100 MHz FSB */ |
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| 19 | |||
| 20 | /* speedstep states -- only two of them */ |
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| 21 | |||
| 22 | #define SPEEDSTEP_HIGH 0x00000000 |
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| 23 | #define SPEEDSTEP_LOW 0x00000001 |
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| 24 | |||
| 25 | |||
| 26 | /* detect a speedstep-capable processor */ |
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| 27 | extern unsigned int speedstep_detect_processor (void); |
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| 28 | |||
| 29 | /* detect the current speed (in khz) of the processor */ |
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| 30 | extern unsigned int speedstep_get_processor_frequency(unsigned int processor); |
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| 31 | |||
| 32 | |||
| 33 | /* detect the low and high speeds of the processor. The callback |
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| 34 | * set_state"'s first argument is either SPEEDSTEP_HIGH or |
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| 35 | * SPEEDSTEP_LOW; the second argument is zero so that no |
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| 36 | * cpufreq_notify_transition calls are initiated. |
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| 37 | */ |
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| 38 | extern unsigned int speedstep_get_freqs(unsigned int processor, |
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| 39 | unsigned int *low_speed, |
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| 40 | unsigned int *high_speed, |
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| 41 | void (*set_state) (unsigned int state, unsigned int notify)); |