Merge branch 'pm-cpufreq'

* pm-cpufreq: (63 commits)
  intel_pstate: Clean up get_target_pstate_use_performance()
  intel_pstate: Use sample.core_avg_perf in get_avg_pstate()
  intel_pstate: Clarify average performance computation
  intel_pstate: Avoid unnecessary synchronize_sched() during initialization
  cpufreq: schedutil: Make default depend on CONFIG_SMP
  cpufreq: powernv: del_timer_sync when global and local pstate are equal
  cpufreq: powernv: Move smp_call_function_any() out of irq safe block
  intel_pstate: Clean up intel_pstate_get()
  cpufreq: schedutil: Make it depend on CONFIG_SMP
  cpufreq: governor: Fix handling of special cases in dbs_update()
  cpufreq: intel_pstate: Ignore _PPC processing under HWP
  cpufreq: arm_big_little: use generic OPP functions for {init, free}_opp_table
  cpufreq: tango: Use generic platdev driver
  cpufreq: Fix GOV_LIMITS handling for the userspace governor
  cpufreq: mvebu: Move cpufreq code into drivers/cpufreq/
  cpufreq: dt: Kill platform-data
  mvebu: Use dev_pm_opp_set_sharing_cpus() to mark OPP tables as shared
  cpufreq: dt: Identify cpu-sharing for platforms without operating-points-v2
  cpufreq: governor: Change confusing struct field and variable names
  cpufreq: intel_pstate: Enable PPC enforcement for servers
  ...

Documentation/kernel-parameters.txt

@@ -1661,6 +1661,11 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
 		hwp_only
 			Only load intel_pstate on systems which support
 			hardware P state control (HWP) if available.
+		support_acpi_ppc
+			Enforce ACPI _PPC performance limits. If the Fixed ACPI
+			Description Table, specifies preferred power management
+			profile as "Enterprise Server" or "Performance Server",
+			then this feature is turned on by default.
 
 	intremap=	[X86-64, Intel-IOMMU]
 			on	enable Interrupt Remapping (default)

MAINTAINERS

@@ -1322,6 +1322,7 @@ F:	drivers/rtc/rtc-armada38x.c
 F:	arch/arm/boot/dts/armada*
 F:	arch/arm/boot/dts/kirkwood*
 F:	arch/arm64/boot/dts/marvell/armada*
+F:	drivers/cpufreq/mvebu-cpufreq.c
 
 
 ARM/Marvell Berlin SoC support

arch/arm/mach-berlin/berlin.c

@@ -18,19 +18,13 @@
 #include <asm/hardware/cache-l2x0.h>
 #include <asm/mach/arch.h>
 
-static void __init berlin_init_late(void)
-{
-	platform_device_register_simple("cpufreq-dt", -1, NULL, 0);
-}
-
 static const char * const berlin_dt_compat[] = {
 	"marvell,berlin",
 	NULL,
 };
 
 DT_MACHINE_START(BERLIN_DT, "Marvell Berlin")
 	.dt_compat	= berlin_dt_compat,
-	.init_late	= berlin_init_late,
 	/*
 	 * with DT probing for L2CCs, berlin_init_machine can be removed.
 	 * Note: 88DE3005 (Armada 1500-mini) uses pl310 l2cc

arch/arm/mach-exynos/exynos.c

@@ -213,33 +213,6 @@ static void __init exynos_init_irq(void)
 	exynos_map_pmu();
 }
 
-static const struct of_device_id exynos_cpufreq_matches[] = {
-	{ .compatible = "samsung,exynos3250", .data = "cpufreq-dt" },
-	{ .compatible = "samsung,exynos4210", .data = "cpufreq-dt" },
-	{ .compatible = "samsung,exynos4212", .data = "cpufreq-dt" },
-	{ .compatible = "samsung,exynos4412", .data = "cpufreq-dt" },
-	{ .compatible = "samsung,exynos5250", .data = "cpufreq-dt" },
-#ifndef CONFIG_BL_SWITCHER
-	{ .compatible = "samsung,exynos5420", .data = "cpufreq-dt" },
-	{ .compatible = "samsung,exynos5800", .data = "cpufreq-dt" },
-#endif
-	{ /* sentinel */ }
-};
-
-static void __init exynos_cpufreq_init(void)
-{
-	struct device_node *root = of_find_node_by_path("/");
-	const struct of_device_id *match;
-
-	match = of_match_node(exynos_cpufreq_matches, root);
-	if (!match) {
-		platform_device_register_simple("exynos-cpufreq", -1, NULL, 0);
-		return;
-	}
-
-	platform_device_register_simple(match->data, -1, NULL, 0);
-}
-
 static void __init exynos_dt_machine_init(void)
 {
 	/*
@@ -262,8 +235,6 @@ static void __init exynos_dt_machine_init(void)
 	    of_machine_is_compatible("samsung,exynos5250"))
 		platform_device_register(&exynos_cpuidle);
 
-	exynos_cpufreq_init();
-
 	of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
 }
 

arch/arm/mach-imx/imx27-dt.c

@@ -18,15 +18,6 @@
 #include "common.h"
 #include "mx27.h"
 
-static void __init imx27_dt_init(void)
-{
-	struct platform_device_info devinfo = { .name = "cpufreq-dt", };
-
-	of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
-
-	platform_device_register_full(&devinfo);
-}
-
 static const char * const imx27_dt_board_compat[] __initconst = {
 	"fsl,imx27",
 	NULL
@@ -36,6 +27,5 @@ DT_MACHINE_START(IMX27_DT, "Freescale i.MX27 (Device Tree Support)")
 	.map_io		= mx27_map_io,
 	.init_early	= imx27_init_early,
 	.init_irq	= mx27_init_irq,
-	.init_machine	= imx27_dt_init,
 	.dt_compat	= imx27_dt_board_compat,
 MACHINE_END

arch/arm/mach-imx/mach-imx51.c

@@ -50,13 +50,10 @@ static void __init imx51_ipu_mipi_setup(void)
 
 static void __init imx51_dt_init(void)
 {
-	struct platform_device_info devinfo = { .name = "cpufreq-dt", };
-
 	imx51_ipu_mipi_setup();
 	imx_src_init();
 
 	of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
-	platform_device_register_full(&devinfo);
 }
 
 static void __init imx51_init_late(void)

arch/arm/mach-imx/mach-imx53.c

@@ -40,8 +40,6 @@ static void __init imx53_dt_init(void)
 static void __init imx53_init_late(void)
 {
 	imx53_pm_init();
-
-	platform_device_register_simple("cpufreq-dt", -1, NULL, 0);
 }
 
 static const char * const imx53_dt_board_compat[] __initconst = {

arch/arm/mach-imx/mach-imx7d.c

@@ -105,19 +105,13 @@ static void __init imx7d_init_irq(void)
 	irqchip_init();
 }
 
-static void __init imx7d_init_late(void)
-{
-	platform_device_register_simple("cpufreq-dt", -1, NULL, 0);
-}
-
 static const char *const imx7d_dt_compat[] __initconst = {
 	"fsl,imx7d",
 	NULL,
 };
 
 DT_MACHINE_START(IMX7D, "Freescale i.MX7 Dual (Device Tree)")
 	.init_irq	= imx7d_init_irq,
-	.init_late	= imx7d_init_late,
 	.init_machine	= imx7d_init_machine,
 	.dt_compat	= imx7d_dt_compat,
 MACHINE_END

arch/arm/mach-mvebu/pmsu.c

@@ -20,7 +20,6 @@
 
 #include <linux/clk.h>
 #include <linux/cpu_pm.h>
-#include <linux/cpufreq-dt.h>
 #include <linux/delay.h>
 #include <linux/init.h>
 #include <linux/io.h>
@@ -29,7 +28,6 @@
 #include <linux/of_address.h>
 #include <linux/of_device.h>
 #include <linux/platform_device.h>
-#include <linux/pm_opp.h>
 #include <linux/resource.h>
 #include <linux/slab.h>
 #include <linux/smp.h>
@@ -608,86 +606,3 @@ int mvebu_pmsu_dfs_request(int cpu)
 
 	return 0;
 }
-
-struct cpufreq_dt_platform_data cpufreq_dt_pd = {
-	.independent_clocks = true,
-};
-
-static int __init armada_xp_pmsu_cpufreq_init(void)
-{
-	struct device_node *np;
-	struct resource res;
-	int ret, cpu;
-
-	if (!of_machine_is_compatible("marvell,armadaxp"))
-		return 0;
-
-	/*
-	 * In order to have proper cpufreq handling, we need to ensure
-	 * that the Device Tree description of the CPU clock includes
-	 * the definition of the PMU DFS registers. If not, we do not
-	 * register the clock notifier and the cpufreq driver. This
-	 * piece of code is only for compatibility with old Device
-	 * Trees.
-	 */
-	np = of_find_compatible_node(NULL, NULL, "marvell,armada-xp-cpu-clock");
-	if (!np)
-		return 0;
-
-	ret = of_address_to_resource(np, 1, &res);
-	if (ret) {
-		pr_warn(FW_WARN "not enabling cpufreq, deprecated armada-xp-cpu-clock binding\n");
-		of_node_put(np);
-		return 0;
-	}
-
-	of_node_put(np);
-
-	/*
-	 * For each CPU, this loop registers the operating points
-	 * supported (which are the nominal CPU frequency and half of
-	 * it), and registers the clock notifier that will take care
-	 * of doing the PMSU part of a frequency transition.
-	 */
-	for_each_possible_cpu(cpu) {
-		struct device *cpu_dev;
-		struct clk *clk;
-		int ret;
-
-		cpu_dev = get_cpu_device(cpu);
-		if (!cpu_dev) {
-			pr_err("Cannot get CPU %d\n", cpu);
-			continue;
-		}
-
-		clk = clk_get(cpu_dev, 0);
-		if (IS_ERR(clk)) {
-			pr_err("Cannot get clock for CPU %d\n", cpu);
-			return PTR_ERR(clk);
-		}
-
-		/*
-		 * In case of a failure of dev_pm_opp_add(), we don't
-		 * bother with cleaning up the registered OPP (there's
-		 * no function to do so), and simply cancel the
-		 * registration of the cpufreq device.
-		 */
-		ret = dev_pm_opp_add(cpu_dev, clk_get_rate(clk), 0);
-		if (ret) {
-			clk_put(clk);
-			return ret;
-		}
-
-		ret = dev_pm_opp_add(cpu_dev, clk_get_rate(clk) / 2, 0);
-		if (ret) {
-			clk_put(clk);
-			return ret;
-		}
-	}
-
-	platform_device_register_data(NULL, "cpufreq-dt", -1,
-				      &cpufreq_dt_pd, sizeof(cpufreq_dt_pd));
-	return 0;
-}
-
-device_initcall(armada_xp_pmsu_cpufreq_init);

arch/arm/mach-omap2/pm.c

@@ -277,13 +277,10 @@ static void __init omap4_init_voltages(void)
 
 static inline void omap_init_cpufreq(void)
 {
-	struct platform_device_info devinfo = { };
+	struct platform_device_info devinfo = { .name = "omap-cpufreq" };
 
 	if (!of_have_populated_dt())
-		devinfo.name = "omap-cpufreq";
-	else
-		devinfo.name = "cpufreq-dt";
-	platform_device_register_full(&devinfo);
+		platform_device_register_full(&devinfo);
 }
 
 static int __init omap2_common_pm_init(void)

arch/arm/mach-rockchip/rockchip.c

@@ -74,7 +74,6 @@ static void __init rockchip_dt_init(void)
 {
 	rockchip_suspend_init();
 	of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
-	platform_device_register_simple("cpufreq-dt", 0, NULL, 0);
 }
 
 static const char * const rockchip_board_dt_compat[] = {

arch/arm/mach-shmobile/Makefile

@@ -38,7 +38,6 @@ smp-$(CONFIG_ARCH_EMEV2)	+= smp-emev2.o headsmp-scu.o platsmp-scu.o
 
 # PM objects
 obj-$(CONFIG_SUSPEND)		+= suspend.o
-obj-$(CONFIG_CPU_FREQ)		+= cpufreq.o
 obj-$(CONFIG_PM_RCAR)		+= pm-rcar.o
 obj-$(CONFIG_PM_RMOBILE)	+= pm-rmobile.o
 obj-$(CONFIG_ARCH_RCAR_GEN2)	+= pm-rcar-gen2.o

arch/arm/mach-shmobile/common.h

@@ -25,16 +25,9 @@ static inline int shmobile_suspend_init(void) { return 0; }
 static inline void shmobile_smp_apmu_suspend_init(void) { }
 #endif
 
-#ifdef CONFIG_CPU_FREQ
-int shmobile_cpufreq_init(void);
-#else
-static inline int shmobile_cpufreq_init(void) { return 0; }
-#endif
-
 static inline void __init shmobile_init_late(void)
 {
 	shmobile_suspend_init();
-	shmobile_cpufreq_init();
 }
 
 #endif /* __ARCH_MACH_COMMON_H */

arch/arm/mach-sunxi/sunxi.c

@@ -17,11 +17,6 @@
 
 #include <asm/mach/arch.h>
 
-static void __init sunxi_dt_cpufreq_init(void)
-{
-	platform_device_register_simple("cpufreq-dt", -1, NULL, 0);
-}
-
 static const char * const sunxi_board_dt_compat[] = {
 	"allwinner,sun4i-a10",
 	"allwinner,sun5i-a10s",
@@ -32,7 +27,6 @@ static const char * const sunxi_board_dt_compat[] = {
 
 DT_MACHINE_START(SUNXI_DT, "Allwinner sun4i/sun5i Families")
 	.dt_compat	= sunxi_board_dt_compat,
-	.init_late	= sunxi_dt_cpufreq_init,
 MACHINE_END
 
 static const char * const sun6i_board_dt_compat[] = {
@@ -53,7 +47,6 @@ static void __init sun6i_timer_init(void)
 DT_MACHINE_START(SUN6I_DT, "Allwinner sun6i (A31) Family")
 	.init_time	= sun6i_timer_init,
 	.dt_compat	= sun6i_board_dt_compat,
-	.init_late	= sunxi_dt_cpufreq_init,
 MACHINE_END
 
 static const char * const sun7i_board_dt_compat[] = {
@@ -63,7 +56,6 @@ static const char * const sun7i_board_dt_compat[] = {
 
 DT_MACHINE_START(SUN7I_DT, "Allwinner sun7i (A20) Family")
 	.dt_compat	= sun7i_board_dt_compat,
-	.init_late	= sunxi_dt_cpufreq_init,
 MACHINE_END
 
 static const char * const sun8i_board_dt_compat[] = {
@@ -77,7 +69,6 @@ static const char * const sun8i_board_dt_compat[] = {
 DT_MACHINE_START(SUN8I_DT, "Allwinner sun8i Family")
 	.init_time	= sun6i_timer_init,
 	.dt_compat	= sun8i_board_dt_compat,
-	.init_late	= sunxi_dt_cpufreq_init,
 MACHINE_END
 
 static const char * const sun9i_board_dt_compat[] = {

arch/arm/mach-zynq/common.c

@@ -110,7 +110,6 @@ static void __init zynq_init_late(void)
  */
 static void __init zynq_init_machine(void)
 {
-	struct platform_device_info devinfo = { .name = "cpufreq-dt", };
 	struct soc_device_attribute *soc_dev_attr;
 	struct soc_device *soc_dev;
 	struct device *parent = NULL;
@@ -145,7 +144,6 @@ static void __init zynq_init_machine(void)
 	of_platform_populate(NULL, of_default_bus_match_table, NULL, parent);
 
 	platform_device_register(&zynq_cpuidle_device);
-	platform_device_register_full(&devinfo);
 }
 
 static void __init zynq_timer_init(void)