[1/2] cpupower: Introduce powercap intel-rapl library helpers and powercap-info command

diff --git a/tools/power/cpupower/Makefile b/tools/power/cpupower/Makefile
index e9b6de314654..9fd3b309b3a6 100644
--- a/tools/power/cpupower/Makefile
+++ b/tools/power/cpupower/Makefile
@@ -133,7 +133,7 @@  UTIL_OBJS =  utils/helpers/amd.o utils/helpers/msr.o \
 	utils/idle_monitor/mperf_monitor.o utils/idle_monitor/cpupower-monitor.o \
 	utils/cpupower.o utils/cpufreq-info.o utils/cpufreq-set.o \
 	utils/cpupower-set.o utils/cpupower-info.o utils/cpuidle-info.o \
-	utils/cpuidle-set.o
+	utils/cpuidle-set.o utils/powercap-info.o
 
 UTIL_SRC := $(UTIL_OBJS:.o=.c)
 
@@ -143,9 +143,12 @@  UTIL_HEADERS = utils/helpers/helpers.h utils/idle_monitor/cpupower-monitor.h \
 	utils/helpers/bitmask.h \
 	utils/idle_monitor/idle_monitors.h utils/idle_monitor/idle_monitors.def
 
-LIB_HEADERS = 	lib/cpufreq.h lib/cpupower.h lib/cpuidle.h lib/acpi_cppc.h
-LIB_SRC = 	lib/cpufreq.c lib/cpupower.c lib/cpuidle.c lib/acpi_cppc.c
-LIB_OBJS = 	lib/cpufreq.o lib/cpupower.o lib/cpuidle.o lib/acpi_cppc.o
+LIB_HEADERS = 	lib/cpufreq.h lib/cpupower.h lib/cpuidle.h lib/acpi_cppc.h \
+	lib/powercap.h
+LIB_SRC = 	lib/cpufreq.c lib/cpupower.c lib/cpuidle.c lib/acpi_cppc.c \
+	lib/powercap.c
+LIB_OBJS = 	lib/cpufreq.o lib/cpupower.o lib/cpuidle.o lib/acpi_cppc.o \
+	lib/powercap.o
 LIB_OBJS :=	$(addprefix $(OUTPUT),$(LIB_OBJS))
 
 override CFLAGS +=	-pipe
@@ -276,6 +279,7 @@  install-lib: libcpupower
 	$(INSTALL) -d $(DESTDIR)${includedir}
 	$(INSTALL_DATA) lib/cpufreq.h $(DESTDIR)${includedir}/cpufreq.h
 	$(INSTALL_DATA) lib/cpuidle.h $(DESTDIR)${includedir}/cpuidle.h
+	$(INSTALL_DATA) lib/powercap.h $(DESTDIR)${includedir}/powercap.h
 
 install-tools: $(OUTPUT)cpupower
 	$(INSTALL) -d $(DESTDIR)${bindir}
@@ -292,6 +296,7 @@  install-man:
 	$(INSTALL_DATA) -D man/cpupower-set.1 $(DESTDIR)${mandir}/man1/cpupower-set.1
 	$(INSTALL_DATA) -D man/cpupower-info.1 $(DESTDIR)${mandir}/man1/cpupower-info.1
 	$(INSTALL_DATA) -D man/cpupower-monitor.1 $(DESTDIR)${mandir}/man1/cpupower-monitor.1
+	$(INSTALL_DATA) -D man/cpupower-powercap-info.1 $(DESTDIR)${mandir}/man1/cpupower-powercap-info.1
 
 install-gmo: create-gmo
 	$(INSTALL) -d $(DESTDIR)${localedir}
@@ -321,6 +326,7 @@  uninstall:
 	- rm -f $(DESTDIR)${mandir}/man1/cpupower-set.1
 	- rm -f $(DESTDIR)${mandir}/man1/cpupower-info.1
 	- rm -f $(DESTDIR)${mandir}/man1/cpupower-monitor.1
+	- rm -f $(DESTDIR)${mandir}/man1/cpupower-powercap-info.1
 	- for HLANG in $(LANGUAGES); do \
 		rm -f $(DESTDIR)${localedir}/$$HLANG/LC_MESSAGES/cpupower.mo; \
 	  done;
diff --git a/tools/power/cpupower/utils/builtin.h b/tools/power/cpupower/utils/builtin.h
index f7065ae60a14..e1caefd467cd 100644
--- a/tools/power/cpupower/utils/builtin.h
+++ b/tools/power/cpupower/utils/builtin.h
@@ -8,6 +8,8 @@  extern int cmd_freq_set(int argc, const char **argv);
 extern int cmd_freq_info(int argc, const char **argv);
 extern int cmd_idle_set(int argc, const char **argv);
 extern int cmd_idle_info(int argc, const char **argv);
+extern int cmd_cap_info(int argc, const char **argv);
+extern int cmd_cap_set(int argc, const char **argv);
 extern int cmd_monitor(int argc, const char **argv);
 
 #endif
diff --git a/tools/power/cpupower/utils/cpupower.c b/tools/power/cpupower/utils/cpupower.c
index 8ac3304a9957..9ec973165af1 100644
--- a/tools/power/cpupower/utils/cpupower.c
+++ b/tools/power/cpupower/utils/cpupower.c
@@ -54,6 +54,7 @@  static struct cmd_struct commands[] = {
 	{ "frequency-set",	cmd_freq_set,	1	},
 	{ "idle-info",		cmd_idle_info,	0	},
 	{ "idle-set",		cmd_idle_set,	1	},
+	{ "powercap-info",	cmd_cap_info,	0	},
 	{ "set",		cmd_set,	1	},
 	{ "info",		cmd_info,	0	},
 	{ "monitor",		cmd_monitor,	0	},
diff --git a/tools/power/cpupower/utils/powercap-info.c b/tools/power/cpupower/utils/powercap-info.c
new file mode 100644
index 000000000000..989fafe581cf
--- /dev/null
+++ b/tools/power/cpupower/utils/powercap-info.c
@@ -0,0 +1,113 @@ 
+#include <unistd.h>
+#include <stdio.h>
+#include <errno.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <string.h>
+
+#include <getopt.h>
+
+#include "powercap.h"
+#include "helpers/helpers.h"
+
+int powercap_show_all = 0;
+
+static struct option info_opts[] =
+{
+	{ "all",		no_argument,		 NULL,	 'a'},
+	{ },
+};
+
+static int powercap_print_one_zone(struct powercap_zone *zone)
+{
+	int mode, i, ret = 0;
+	char pr_prefix[1024] = "";
+
+	for (i = 0; i < zone->tree_depth && i < POWERCAP_MAX_TREE_DEPTH; i++)
+		strcat (pr_prefix, "\t");
+
+	printf("%sZone: %s", pr_prefix, zone->name);
+	ret = powercap_zone_get_enabled(zone, &mode);
+	if (ret < 0)
+		return ret;
+	printf(" (%s)\n", mode ? "enabled" : "disabled");
+
+	if (zone->has_power_uw)
+printf(_("%sEnergy consumption can be monitored in micro Jules\n"),
+       pr_prefix);
+
+	if (zone->has_energy_uj)
+printf(_("%sPower consumption can be monitored in micro Watts\n"),
+       pr_prefix);
+
+	printf("\n");
+
+	if (ret != 0)
+		return ret;
+	return ret;
+}
+
+static int powercap_show()
+{
+	struct powercap_zone *root_zone;
+	char line[MAX_LINE_LEN] = "";
+	int ret, val;
+
+	ret = powercap_get_driver(line, MAX_LINE_LEN);
+	if (ret < 0) {
+		printf(_("No powercapping driver loaded\n"));
+		return ret;
+	}
+
+	printf("Driver: %s\n", line);
+	ret = powercap_get_enabled(&val);
+	if (ret < 0)
+		return ret;
+	if (!val) {
+		printf(_("Powercapping is disabled\n"));
+		return -1;
+	}
+
+	printf(_("Powercap domain hierarchy:\n\n"));
+	root_zone = powercap_init_zones();
+
+	if (root_zone == NULL) {
+		printf(_("No powercap info found\n"));
+		return 1;
+	}
+
+	powercap_walk_zones(root_zone, powercap_print_one_zone);
+
+	return 0;
+}
+
+int cmd_cap_set(int argc, char **argv)
+{
+	return 0;
+};
+int cmd_cap_info(int argc, char **argv)
+{
+	extern char *optarg;
+	extern int optind, opterr, optopt;
+	int ret = 0, cont = 1;
+	do {
+		ret = getopt_long(argc, argv, "a", info_opts, NULL);
+		switch (ret) {
+		case '?':
+			cont = 0;
+			break;
+		case -1:
+			cont = 0;
+			break;
+		case 'a':
+			powercap_show_all = 1;
+			break;
+		default:
+			fprintf(stderr, _("invalid or unknown argument\n"));
+			return EXIT_FAILURE;
+		}
+	} while (cont);
+
+	powercap_show();
+	return 0;
+}