Index: linux-pm/drivers/cpufreq/intel_pstate.c
===================================================================
--- linux-pm.orig/drivers/cpufreq/intel_pstate.c
+++ linux-pm/drivers/cpufreq/intel_pstate.c
@@ -122,6 +122,8 @@ struct sample {
  * @scaling:		Scaling factor to  convert frequency to cpufreq
  *			frequency units
  * @turbo_pstate:	Max Turbo P state possible for this platform
+ * @max_freq:		@max_pstate frequency in cpufreq units
+ * @turbo_freq:		@turbo_pstate frequency in cpufreq units
  *
  * Stores the per cpu model P state limits and current P state.
  */
@@ -132,6 +134,8 @@ struct pstate_data {
 	int	max_pstate_physical;
 	int	scaling;
 	int	turbo_pstate;
+	unsigned int max_freq;
+	unsigned int turbo_freq;
 };
 
 /**
@@ -459,7 +463,7 @@ static void intel_pstate_init_acpi_perf_
 {
 }
 
-static void intel_pstate_exit_perf_limits(struct cpufreq_policy *policy)
+static inline int intel_pstate_exit_perf_limits(struct cpufreq_policy *policy)
 {
 }
 #endif
@@ -1171,6 +1175,8 @@ static void intel_pstate_get_cpu_pstates
 	cpu->pstate.max_pstate_physical = pstate_funcs.get_max_physical();
 	cpu->pstate.turbo_pstate = pstate_funcs.get_turbo();
 	cpu->pstate.scaling = pstate_funcs.get_scaling();
+	cpu->pstate.max_freq = cpu->pstate.max_pstate * cpu->pstate.scaling;
+	cpu->pstate.turbo_freq = cpu->pstate.turbo_pstate * cpu->pstate.scaling;
 
 	if (pstate_funcs.get_vid)
 		pstate_funcs.get_vid(cpu);
@@ -1312,8 +1318,6 @@ static inline void intel_pstate_update_p
 {
 	int max_perf, min_perf;
 
-	update_turbo_state();
-
 	intel_pstate_get_min_max(cpu, &min_perf, &max_perf);
 	pstate = clamp_t(int, pstate, min_perf, max_perf);
 	trace_cpu_frequency(pstate * cpu->pstate.scaling, cpu->cpu);
@@ -1333,6 +1337,8 @@ static inline void intel_pstate_adjust_b
 
 	target_pstate = pstate_funcs.get_target_pstate(cpu);
 
+	update_turbo_state();
+
 	intel_pstate_update_pstate(cpu, target_pstate);
 
 	sample = &cpu->sample;
@@ -1487,6 +1493,32 @@ static void intel_pstate_set_performance
 	limits->min_sysfs_pct = 0;
 }
 
+static void intel_pstate_adjust_limits(struct cpufreq_policy *policy)
+{
+	limits->min_policy_pct = (policy->min * 100) / policy->cpuinfo.max_freq;
+	limits->min_policy_pct = clamp_t(int, limits->min_policy_pct, 0 , 100);
+	limits->max_policy_pct = DIV_ROUND_UP(policy->max * 100,
+					      policy->cpuinfo.max_freq);
+	limits->max_policy_pct = clamp_t(int, limits->max_policy_pct, 0 , 100);
+
+	/* Normalize user input to [min_policy_pct, max_policy_pct] */
+	limits->min_perf_pct = max(limits->min_policy_pct,
+				   limits->min_sysfs_pct);
+	limits->min_perf_pct = min(limits->max_policy_pct,
+				   limits->min_perf_pct);
+	limits->max_perf_pct = min(limits->max_policy_pct,
+				   limits->max_sysfs_pct);
+	limits->max_perf_pct = max(limits->min_policy_pct,
+				   limits->max_perf_pct);
+
+	/* Make sure min_perf_pct <= max_perf_pct */
+	limits->min_perf_pct = min(limits->max_perf_pct, limits->min_perf_pct);
+
+	limits->min_perf = div_fp(limits->min_perf_pct, 100);
+	limits->max_perf = div_fp(limits->max_perf_pct, 100);
+	limits->max_perf = round_up(limits->max_perf, FRAC_BITS);
+}
+
 static int intel_pstate_set_policy(struct cpufreq_policy *policy)
 {
 	struct cpudata *cpu;
@@ -1517,28 +1549,7 @@ static int intel_pstate_set_policy(struc
 		limits = &powersave_limits;
 	}
 
-	limits->min_policy_pct = (policy->min * 100) / policy->cpuinfo.max_freq;
-	limits->min_policy_pct = clamp_t(int, limits->min_policy_pct, 0 , 100);
-	limits->max_policy_pct = DIV_ROUND_UP(policy->max * 100,
-					      policy->cpuinfo.max_freq);
-	limits->max_policy_pct = clamp_t(int, limits->max_policy_pct, 0 , 100);
-
-	/* Normalize user input to [min_policy_pct, max_policy_pct] */
-	limits->min_perf_pct = max(limits->min_policy_pct,
-				   limits->min_sysfs_pct);
-	limits->min_perf_pct = min(limits->max_policy_pct,
-				   limits->min_perf_pct);
-	limits->max_perf_pct = min(limits->max_policy_pct,
-				   limits->max_sysfs_pct);
-	limits->max_perf_pct = max(limits->min_policy_pct,
-				   limits->max_perf_pct);
-
-	/* Make sure min_perf_pct <= max_perf_pct */
-	limits->min_perf_pct = min(limits->max_perf_pct, limits->min_perf_pct);
-
-	limits->min_perf = div_fp(limits->min_perf_pct, 100);
-	limits->max_perf = div_fp(limits->max_perf_pct, 100);
-	limits->max_perf = round_up(limits->max_perf, FRAC_BITS);
+	intel_pstate_adjust_limits(policy);
 
  out:
 	if (policy->policy == CPUFREQ_POLICY_PERFORMANCE) {
@@ -1568,22 +1579,21 @@ static int intel_pstate_verify_policy(st
 	return 0;
 }
 
-static void intel_pstate_stop_cpu(struct cpufreq_policy *policy)
+static void intel_cpufreq_stop_cpu(struct cpufreq_policy *policy)
 {
-	int cpu_num = policy->cpu;
-	struct cpudata *cpu = all_cpu_data[cpu_num];
-
-	pr_debug("CPU %d exiting\n", cpu_num);
-
-	intel_pstate_clear_update_util_hook(cpu_num);
+	intel_pstate_set_min_pstate(all_cpu_data[policy->cpu]);
+}
 
-	if (hwp_active)
-		return;
+static void intel_pstate_stop_cpu(struct cpufreq_policy *policy)
+{
+	pr_debug("CPU %d exiting\n", policy->cpu);
 
-	intel_pstate_set_min_pstate(cpu);
+	intel_pstate_clear_update_util_hook(policy->cpu);
+	if (!hwp_active)
+		intel_cpufreq_stop_cpu(policy);
 }
 
-static int intel_pstate_cpu_init(struct cpufreq_policy *policy)
+static int intel_cpufreq_cpu_init(struct cpufreq_policy *policy)
 {
 	struct cpudata *cpu;
 	int rc;
@@ -1594,11 +1604,6 @@ static int intel_pstate_cpu_init(struct
 
 	cpu = all_cpu_data[policy->cpu];
 
-	if (limits->min_perf_pct == 100 && limits->max_perf_pct == 100)
-		policy->policy = CPUFREQ_POLICY_PERFORMANCE;
-	else
-		policy->policy = CPUFREQ_POLICY_POWERSAVE;
-
 	policy->min = cpu->pstate.min_pstate * cpu->pstate.scaling;
 	policy->max = cpu->pstate.turbo_pstate * cpu->pstate.scaling;
 
@@ -1610,9 +1615,11 @@ static int intel_pstate_cpu_init(struct
 	policy->cpuinfo.max_freq *= cpu->pstate.scaling;
 
 	intel_pstate_init_acpi_perf_limits(policy);
-	policy->cpuinfo.transition_latency = CPUFREQ_ETERNAL;
+	policy->cpuinfo.transition_latency = 20000;
 	cpumask_set_cpu(policy->cpu, policy->cpus);
 
+	policy->fast_switch_possible = true;
+
 	return 0;
 }
 
@@ -1620,10 +1627,27 @@ static int intel_pstate_cpu_exit(struct
 {
 	intel_pstate_exit_perf_limits(policy);
 
+	policy->fast_switch_possible = false;
+
 	return 0;
 }
 
-static struct cpufreq_driver intel_pstate_driver = {
+static int intel_pstate_cpu_init(struct cpufreq_policy *policy)
+{
+	int ret = intel_cpufreq_cpu_init(policy);
+
+	if (ret)
+		return ret;
+
+	if (limits->min_perf_pct == 100 && limits->max_perf_pct == 100)
+		policy->policy = CPUFREQ_POLICY_PERFORMANCE;
+	else
+		policy->policy = CPUFREQ_POLICY_POWERSAVE;
+
+	return 0;
+}
+
+static struct cpufreq_driver intel_pstate = {
 	.flags		= CPUFREQ_CONST_LOOPS,
 	.verify		= intel_pstate_verify_policy,
 	.setpolicy	= intel_pstate_set_policy,
@@ -1635,6 +1659,95 @@ static struct cpufreq_driver intel_pstat
 	.name		= "intel_pstate",
 };
 
+static int intel_cpufreq_verify_policy(struct cpufreq_policy *policy)
+{
+	struct cpudata *cpu = all_cpu_data[policy->cpu];
+
+	update_turbo_state();
+	policy->cpuinfo.max_freq = limits->turbo_disabled ?
+			cpu->pstate.max_freq : cpu->pstate.turbo_freq;
+
+	cpufreq_verify_within_cpu_limits(policy);
+
+	intel_pstate_adjust_limits(policy);
+
+	return 0;
+}
+
+static unsigned int intel_cpufreq_turbo_update(struct cpudata *cpu,
+					       struct cpufreq_policy *policy,
+					       unsigned int target_freq)
+{
+	unsigned int max_freq;
+
+	update_turbo_state();
+
+	max_freq = limits->no_turbo || limits->turbo_disabled ?
+			cpu->pstate.max_freq : cpu->pstate.turbo_freq;
+	policy->cpuinfo.max_freq = max_freq;
+	if (policy->max > max_freq)
+		policy->max = max_freq;
+
+	if (target_freq > max_freq)
+		target_freq = max_freq;
+
+	return target_freq;
+}
+
+static int intel_cpufreq_target(struct cpufreq_policy *policy,
+				unsigned int target_freq,
+				unsigned int relation)
+{
+	struct cpudata *cpu = all_cpu_data[policy->cpu];
+	struct cpufreq_freqs freqs;
+	int target_pstate;
+
+	freqs.old = policy->cur;
+	freqs.new = intel_cpufreq_turbo_update(cpu, policy, target_freq);
+
+	cpufreq_freq_transition_begin(policy, &freqs);
+	switch (relation) {
+	case CPUFREQ_RELATION_L:
+		target_pstate = DIV_ROUND_UP(freqs.new, cpu->pstate.scaling);
+		break;
+	case CPUFREQ_RELATION_H:
+		target_pstate = freqs.new / cpu->pstate.scaling;
+		break;
+	default:
+		target_pstate = DIV_ROUND_CLOSEST(freqs.new, cpu->pstate.scaling);
+		break;
+	}
+	intel_pstate_update_pstate(cpu, target_pstate);
+	cpufreq_freq_transition_end(policy, &freqs, false);
+
+	return 0;
+}
+
+static unsigned int intel_cpufreq_fast_switch(struct cpufreq_policy *policy,
+					      unsigned int target_freq)
+{
+	struct cpudata *cpu = all_cpu_data[policy->cpu];
+	int target_pstate;
+
+	target_freq = intel_cpufreq_turbo_update(cpu, policy, target_freq);
+	target_pstate = DIV_ROUND_UP(target_freq, cpu->pstate.scaling);
+	intel_pstate_update_pstate(cpu, target_pstate);
+	return target_freq;
+}
+
+static struct cpufreq_driver intel_cpufreq = {
+	.flags		= CPUFREQ_CONST_LOOPS,
+	.verify		= intel_cpufreq_verify_policy,
+	.target		= intel_cpufreq_target,
+	.fast_switch	= intel_cpufreq_fast_switch,
+	.init		= intel_cpufreq_cpu_init,
+	.exit		= intel_pstate_cpu_exit,
+	.stop_cpu	= intel_cpufreq_stop_cpu,
+	.name		= "intel_cpufreq",
+};
+
+static struct cpufreq_driver *intel_pstate_driver = &intel_pstate;
+
 static int no_load __initdata;
 static int no_hwp __initdata;
 static int hwp_only __initdata;
@@ -1839,7 +1952,7 @@ hwp_cpu_matched:
 	if (!hwp_active && hwp_only)
 		goto out;
 
-	rc = cpufreq_register_driver(&intel_pstate_driver);
+	rc = cpufreq_register_driver(intel_pstate_driver);
 	if (rc)
 		goto out;
 
@@ -1854,7 +1967,9 @@ out:
 	get_online_cpus();
 	for_each_online_cpu(cpu) {
 		if (all_cpu_data[cpu]) {
-			intel_pstate_clear_update_util_hook(cpu);
+			if (intel_pstate_driver == &intel_pstate)
+				intel_pstate_clear_update_util_hook(cpu);
+
 			kfree(all_cpu_data[cpu]);
 		}
 	}
@@ -1870,8 +1985,13 @@ static int __init intel_pstate_setup(cha
 	if (!str)
 		return -EINVAL;
 
-	if (!strcmp(str, "disable"))
+	if (!strcmp(str, "disable")) {
 		no_load = 1;
+	} else if (!strcmp(str, "passive")) {
+		pr_info("Passive mode enabled\n");
+		intel_pstate_driver = &intel_cpufreq;
+		no_hwp = 1;
+	}
 	if (!strcmp(str, "no_hwp")) {
 		pr_info("HWP disabled\n");
 		no_hwp = 1;
Index: linux-pm/Documentation/kernel-parameters.txt
===================================================================
--- linux-pm.orig/Documentation/kernel-parameters.txt
+++ linux-pm/Documentation/kernel-parameters.txt
@@ -1694,6 +1694,12 @@ bytes respectively. Such letter suffixes
 		       disable
 		         Do not enable intel_pstate as the default
 		         scaling driver for the supported processors
+		       passive
+			 Use intel_pstate as a scaling driver, but configure it
+			 to work with generic cpufreq governors (instead of
+			 enabling its internal governor).  This mode cannot be
+			 used along with the hardware-managed P-states (HWP)
+			 feature.
 		       force
 			 Enable intel_pstate on systems that prohibit it by default
 			 in favor of acpi-cpufreq. Forcing the intel_pstate driver
