#ifndef _LINUX_CPUFREQ_H
#define _LINUX_CPUFREQ_H
-#include <linux/config.h>
+#include <linux/mutex.h>
#include <linux/notifier.h>
#include <linux/threads.h>
#include <linux/device.h>
#include <linux/completion.h>
#include <linux/workqueue.h>
#include <linux/cpumask.h>
+#include <asm/div64.h>
#define CPUFREQ_NAME_LEN 16
/* Frequency values here are CPU kHz so that hardware which doesn't run
* with some frequencies can complain without having to guess what per
* cent / per mille means.
- * Maximum transition latency is in microseconds - if it's unknown,
+ * Maximum transition latency is in nanoseconds - if it's unknown,
* CPUFREQ_ETERNAL shall be used.
*/
struct cpufreq_policy {
cpumask_t cpus; /* affected CPUs */
+ unsigned int shared_type; /* ANY or ALL affected CPUs
+ should set cpufreq */
unsigned int cpu; /* cpu nr of registered CPU */
struct cpufreq_cpuinfo cpuinfo;/* see above */
unsigned int policy; /* see above */
struct cpufreq_governor *governor; /* see below */
- struct semaphore lock; /* CPU ->setpolicy or ->target may
+ struct mutex lock; /* CPU ->setpolicy or ->target may
only be called once a time */
struct work_struct update; /* if update_policy() needs to be
#define CPUFREQ_INCOMPATIBLE (1)
#define CPUFREQ_NOTIFY (2)
+#define CPUFREQ_SHARED_TYPE_NONE (0) /* None */
+#define CPUFREQ_SHARED_TYPE_HW (1) /* HW does needed coordination */
+#define CPUFREQ_SHARED_TYPE_ALL (2) /* All dependent CPUs should set freq */
+#define CPUFREQ_SHARED_TYPE_ANY (3) /* Freq can be set from any dependent CPU*/
/******************** cpufreq transition notifiers *******************/
unsigned int relation);
-/* pass an event to the cpufreq governor */
-int cpufreq_governor(unsigned int cpu, unsigned int event);
-
int cpufreq_register_governor(struct cpufreq_governor *governor);
void cpufreq_unregister_governor(struct cpufreq_governor *governor);
/* optional */
int (*exit) (struct cpufreq_policy *policy);
- int (*suspend) (struct cpufreq_policy *policy, u32 state);
+ int (*suspend) (struct cpufreq_policy *policy, pm_message_t pmsg);
int (*resume) (struct cpufreq_policy *policy);
struct freq_attr **attr;
};
/* query the current CPU frequency (in kHz). If zero, cpufreq couldn't detect it */
unsigned int cpufreq_get(unsigned int cpu);
+/* query the last known CPU freq (in kHz). If zero, cpufreq couldn't detect it */
+#ifdef CONFIG_CPU_FREQ
+unsigned int cpufreq_quick_get(unsigned int cpu);
+#else
+static inline unsigned int cpufreq_quick_get(unsigned int cpu)
+{
+ return 0;
+}
+#endif
+
/*********************************************************************
* CPUFREQ DEFAULT GOVERNOR *