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- /*
- * (C) 2002 - 2003 Dominik Brodowski <linux@brodo.de>
- *
- * Licensed under the terms of the GNU GPL License version 2.
- *
- * Library for common functions for Intel SpeedStep v.1 and v.2 support
- *
- * BIG FAT DISCLAIMER: Work in progress code. Possibly *dangerous*
- */
- /* processors */
- #define SPEEDSTEP_PROCESSOR_PIII_C_EARLY 0x00000001 /* Coppermine core */
- #define SPEEDSTEP_PROCESSOR_PIII_C 0x00000002 /* Coppermine core */
- #define SPEEDSTEP_PROCESSOR_PIII_T 0x00000003 /* Tualatin core */
- #define SPEEDSTEP_PROCESSOR_P4M 0x00000004 /* P4-M */
- /* the following processors are not speedstep-capable and are not auto-detected
- * in speedstep_detect_processor(). However, their speed can be detected using
- * the speedstep_get_processor_frequency() call. */
- #define SPEEDSTEP_PROCESSOR_PM 0xFFFFFF03 /* Pentium M */
- #define SPEEDSTEP_PROCESSOR_P4D 0xFFFFFF04 /* desktop P4 */
- #define SPEEDSTEP_PROCESSOR_PCORE 0xFFFFFF05 /* Core */
- /* speedstep states -- only two of them */
- #define SPEEDSTEP_HIGH 0x00000000
- #define SPEEDSTEP_LOW 0x00000001
- /* detect a speedstep-capable processor */
- extern unsigned int speedstep_detect_processor (void);
- /* detect the current speed (in khz) of the processor */
- extern unsigned int speedstep_get_processor_frequency(unsigned int processor);
- /* detect the low and high speeds of the processor. The callback
- * set_state"'s first argument is either SPEEDSTEP_HIGH or
- * SPEEDSTEP_LOW; the second argument is zero so that no
- * cpufreq_notify_transition calls are initiated.
- */
- extern unsigned int speedstep_get_freqs(unsigned int processor,
- unsigned int *low_speed,
- unsigned int *high_speed,
- unsigned int *transition_latency,
- void (*set_state) (unsigned int state));
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