Lines Matching +full:cpu +full:- +full:driver

1 /*-
2  * SPDX-License-Identifier: BSD-2-Clause
4  * Copyright (c) 2005-2007 Nate Lawson (SDG)
35  * CPU device support.
59 		return (-1);  in cpu_get_nominal_mhz()
80  * CPU frequency control interface.
83 /* Each driver's CPU frequency setting is exported in this format. */
85 	int	freq;	/* CPU clock in Mhz or 100ths of a percent. */
89 	device_t dev;	/* Driver providing this setting. */
90 	int	spec[4];/* Driver-specific storage for non-standard info. */
93 /* Maximum number of settings a given driver can have. */
108 #define CPUFREQ_VAL_UNKNOWN	(-1)
111  * Every driver offers a type of CPU control.  Absolute levels are mutually
117  * frequency settings of 100, 200 and 300, 400 and a relative driver that
124  * information about settings but rely on another machine-dependent driver
142  * the system thermal driver needs to override it for emergency cooling,
143  * the driver would use a higher priority.  Once the event has passed, the
144  * driver would call cpufreq to resume any previous level.
152  * Register and unregister a driver with the cpufreq core.  Once a driver
169  * If the driver wishes to revoke the change from cpufreq_pre_change, it
170  * stores a non-zero error code in the result parameter and the change will
171  * not be made.  If the post-change eventhandler gets a non-zero result,
173  * is revoked, the post-change eventhandler is still called with the error
174  * value supplied by the revoking driver.  This gives listeners who cached
190 /* Allow values to be +/- a bit since sometimes we have to estimate. */
191 #define CPUFREQ_CMP(x, y)	(abs((x) - (y)) < 25)
194  * Machine-dependent functions.
197 /* Estimate the current clock rate for the given CPU id. */