X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=include%2Flinux%2Fcpufreq.h;h=e7e91dbfde0f25927490cf1c9d18c3587b8d7ea3;hb=d67c6f869c0a7f275689855161c93d714197e052;hp=963051a967d6c22510840473e4913cbe71cf03d0;hpb=2d56d3c43cc97ae48586745556f5a5b564d61582;p=pandora-kernel.git

diff --git a/include/linux/cpufreq.h b/include/linux/cpufreq.h
index 963051a967d6..e7e91dbfde0f 100644
--- a/include/linux/cpufreq.h
+++ b/include/linux/cpufreq.h
@@ -32,20 +32,24 @@
  *                     CPUFREQ NOTIFIER INTERFACE                    *
  *********************************************************************/
 
+#define CPUFREQ_TRANSITION_NOTIFIER	(0)
+#define CPUFREQ_POLICY_NOTIFIER		(1)
+
 #ifdef CONFIG_CPU_FREQ
 int cpufreq_register_notifier(struct notifier_block *nb, unsigned int list);
-#else
+int cpufreq_unregister_notifier(struct notifier_block *nb, unsigned int list);
+#else		/* CONFIG_CPU_FREQ */
 static inline int cpufreq_register_notifier(struct notifier_block *nb,
 						unsigned int list)
 {
 	return 0;
 }
-#endif
-int cpufreq_unregister_notifier(struct notifier_block *nb, unsigned int list);
-
-#define CPUFREQ_TRANSITION_NOTIFIER	(0)
-#define CPUFREQ_POLICY_NOTIFIER		(1)
-
+static inline int cpufreq_unregister_notifier(struct notifier_block *nb,
+						unsigned int list)
+{
+	return 0;
+}
+#endif		/* CONFIG_CPU_FREQ */
 
 /* if (cpufreq_driver->target) exists, the ->governor decides what frequency
  * within the limits is used. If (cpufreq_driver->setpolicy> exists, these
@@ -79,7 +83,8 @@ struct cpufreq_real_policy {
 };
 
 struct cpufreq_policy {
-	cpumask_t		cpus;	/* affected CPUs */
+	cpumask_t		cpus;	/* CPUs requiring sw coordination */
+	cpumask_t		related_cpus; /* CPUs with any coordination */
 	unsigned int		shared_type; /* ANY or ALL affected CPUs
 						should set cpufreq */
 	unsigned int		cpu;    /* cpu nr of registered CPU */
@@ -163,6 +168,13 @@ struct cpufreq_governor {
 	char	name[CPUFREQ_NAME_LEN];
 	int 	(*governor)	(struct cpufreq_policy *policy,
 				 unsigned int event);
+	ssize_t	(*show_setspeed)	(struct cpufreq_policy *policy,
+					 char *buf);
+	int 	(*store_setspeed)	(struct cpufreq_policy *policy,
+					 unsigned int freq);
+	unsigned int max_transition_latency; /* HW must be able to switch to
+			next freq faster than this value in nano secs or we
+			will fallback to performance governor */
 	struct list_head	governor_list;
 	struct module		*owner;
 };
@@ -268,22 +280,17 @@ struct freq_attr {
 int cpufreq_get_policy(struct cpufreq_policy *policy, unsigned int cpu);
 int cpufreq_update_policy(unsigned int cpu);
 
+/* 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
- */
+/* 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);
-unsigned int cpufreq_get(unsigned int cpu);
 #else
 static inline unsigned int cpufreq_quick_get(unsigned int cpu)
 {
 	return 0;
 }
-static inline unsigned int cpufreq_get(unsigned int cpu)
-{
-	return 0;
-}
 #endif
 
 
@@ -292,12 +299,27 @@ static inline unsigned int cpufreq_get(unsigned int cpu)
  *********************************************************************/
 
 
-#ifdef CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE
+/*
+  Performance governor is fallback governor if any other gov failed to
+  auto load due latency restrictions
+*/
+#ifdef CONFIG_CPU_FREQ_GOV_PERFORMANCE
 extern struct cpufreq_governor cpufreq_gov_performance;
-#define CPUFREQ_DEFAULT_GOVERNOR	&cpufreq_gov_performance
+#endif
+#ifdef CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE
+#define CPUFREQ_DEFAULT_GOVERNOR	(&cpufreq_gov_performance)
+#elif defined(CONFIG_CPU_FREQ_DEFAULT_GOV_POWERSAVE)
+extern struct cpufreq_governor cpufreq_gov_powersave;
+#define CPUFREQ_DEFAULT_GOVERNOR	(&cpufreq_gov_powersave)
 #elif defined(CONFIG_CPU_FREQ_DEFAULT_GOV_USERSPACE)
 extern struct cpufreq_governor cpufreq_gov_userspace;
-#define CPUFREQ_DEFAULT_GOVERNOR	&cpufreq_gov_userspace
+#define CPUFREQ_DEFAULT_GOVERNOR	(&cpufreq_gov_userspace)
+#elif defined(CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND)
+extern struct cpufreq_governor cpufreq_gov_ondemand;
+#define CPUFREQ_DEFAULT_GOVERNOR	(&cpufreq_gov_ondemand)
+#elif defined(CONFIG_CPU_FREQ_DEFAULT_GOV_CONSERVATIVE)
+extern struct cpufreq_governor cpufreq_gov_conservative;
+#define CPUFREQ_DEFAULT_GOVERNOR	(&cpufreq_gov_conservative)
 #endif