cpufreq: define generic .attr, .exit() and .verify() routines

[deliverable/linux.git] / include / linux / cpufreq.h

diff --git a/include/linux/cpufreq.h b/include/linux/cpufreq.h
index fcabc42d66ab413a38730cb78d8eedc9bda91084..36ccd0bf1304f466e7b9eb2f8852dfaeab395520 100644 (file)
--- a/include/linux/cpufreq.h
+++ b/include/linux/cpufreq.h
@@ -180,13 +180,6 @@ __ATTR(_name, 0644, show_##_name, store_##_name)
 struct cpufreq_driver {
        char                    name[CPUFREQ_NAME_LEN];
        u8                      flags;
-       /*
-        * This should be set by platforms having multiple clock-domains, i.e.
-        * supporting multiple policies. With this sysfs directories of governor
-        * would be created in cpu/cpu<num>/cpufreq/ directory and so they can
-        * use the same governor with different tunables for different clusters.
-        */
-       bool                    have_governor_per_policy;
 
        /* needed by all drivers */
        int     (*init)         (struct cpufreq_policy *policy);
@@ -211,13 +204,22 @@ struct cpufreq_driver {
 };
 
 /* flags */
-#define CPUFREQ_STICKY         0x01    /* the driver isn't removed even if
-                                        * all ->init() calls failed */
-#define CPUFREQ_CONST_LOOPS    0x02    /* loops_per_jiffy or other kernel
-                                        * "constants" aren't affected by
-                                        * frequency transitions */
-#define CPUFREQ_PM_NO_WARN     0x04    /* don't warn on suspend/resume speed
-                                        * mismatches */
+#define CPUFREQ_STICKY         (1 << 0)        /* driver isn't removed even if
+                                                  all ->init() calls failed */
+#define CPUFREQ_CONST_LOOPS    (1 << 1)        /* loops_per_jiffy or other
+                                                  kernel "constants" aren't
+                                                  affected by frequency
+                                                  transitions */
+#define CPUFREQ_PM_NO_WARN     (1 << 2)        /* don't warn on suspend/resume
+                                                  speed mismatches */
+
+/*
+ * This should be set by platforms having multiple clock-domains, i.e.
+ * supporting multiple policies. With this sysfs directories of governor would
+ * be created in cpu/cpu<num>/cpufreq/ directory and so they can use the same
+ * governor with different tunables for different clusters.
+ */
+#define CPUFREQ_HAVE_GOVERNOR_PER_POLICY (1 << 3)
 
 int cpufreq_register_driver(struct cpufreq_driver *driver_data);
 int cpufreq_unregister_driver(struct cpufreq_driver *driver_data);
@@ -240,6 +242,13 @@ static inline void cpufreq_verify_within_limits(struct cpufreq_policy *policy,
        return;
 }
 
+static inline void
+cpufreq_verify_within_cpu_limits(struct cpufreq_policy *policy)
+{
+       cpufreq_verify_within_limits(policy, policy->cpuinfo.min_freq,
+                       policy->cpuinfo.max_freq);
+}
+
 /*********************************************************************
  *                     CPUFREQ NOTIFIER INTERFACE                    *
  *********************************************************************/
@@ -392,6 +401,7 @@ int cpufreq_frequency_table_cpuinfo(struct cpufreq_policy *policy,
 
 int cpufreq_frequency_table_verify(struct cpufreq_policy *policy,
                                   struct cpufreq_frequency_table *table);
+int cpufreq_generic_frequency_table_verify(struct cpufreq_policy *policy);
 
 int cpufreq_frequency_table_target(struct cpufreq_policy *policy,
                                   struct cpufreq_frequency_table *table,
@@ -407,8 +417,17 @@ struct cpufreq_frequency_table *cpufreq_frequency_get_table(unsigned int cpu);
 
 /* the following are really really optional */
 extern struct freq_attr cpufreq_freq_attr_scaling_available_freqs;
+extern struct freq_attr *cpufreq_generic_attr[];
 void cpufreq_frequency_table_get_attr(struct cpufreq_frequency_table *table,
                                      unsigned int cpu);
 void cpufreq_frequency_table_put_attr(unsigned int cpu);
+int cpufreq_table_validate_and_show(struct cpufreq_policy *policy,
+                                     struct cpufreq_frequency_table *table);
+
+static inline int cpufreq_generic_exit(struct cpufreq_policy *policy)
+{
+       cpufreq_frequency_table_put_attr(policy->cpu);
+       return 0;
+}
 
 #endif /* _LINUX_CPUFREQ_H */