Clock: Add support for test clock app.

Change-Id: I1ff778418bd6f873caca9aa937e1d0a13ce050d6
diff --git a/app/clocktests/clock_tests.c b/app/clocktests/clock_tests.c
new file mode 100644
index 0000000..117162d
--- /dev/null
+++ b/app/clocktests/clock_tests.c
@@ -0,0 +1,121 @@
+/*
+ * Copyright (c) 2012, Code Aurora Forum. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in the
+ *       documentation and/or other materials provided with the distribution.
+ *     * Neither the name of Code Aurora nor
+ *       the names of its contributors may be used to endorse or promote
+ *       products derived from this software without specific prior written
+ *       permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NON-INFRINGEMENT ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include <debug.h>
+#include <string.h>
+#include <app.h>
+#include <platform.h>
+#include <kernel/thread.h>
+#include <err.h>
+
+#if defined(WITH_LIB_CONSOLE) && defined(DEBUG_CLOCK)
+#include <lib/console.h>
+#include <clock.h>
+
+static void print_clock_list()
+{
+	unsigned i;
+	struct clk_lookup *cl;
+	unsigned num;
+	struct clk_list *clock_list = clk_get_list();
+
+	if(!clock_list)
+		return;
+
+	cl = clock_list->clist;
+	num = clock_list->num;
+
+	if(!cl || !num)
+		return;
+
+	printf("Clock list:\n");
+	for(i=0; i < num; i++, cl++)
+	{
+		printf("%s\n", cl->con_id);
+	}
+}
+
+static int clock_measure(const char *id)
+{
+	int ret = NO_ERROR;
+	struct clk *cp, *mcp;
+	unsigned long rate;
+
+	/* Get clk */
+	cp = clk_get(id);
+	if(!cp)
+	{
+		ret = ERR_NOT_VALID;
+		goto measure_error;
+	}
+
+	/* Get measure clk */
+	mcp = clk_get("measure");
+	if(!mcp)
+	{
+		ret = ERR_NOT_VALID;
+		goto measure_error;
+	}
+
+	/* Set parent clk */
+	clk_set_parent(mcp, cp);
+
+	rate = clk_get_rate(mcp);
+
+	printf("Clock %s is running at: %lu Hz.\n", id, rate);
+
+measure_error:
+	return ret;
+}
+
+static int clock_tests(int argc, cmd_args *argv)
+{
+	if (argc < 2) {
+		printf("not enough arguments:\n");
+		printf("%s  <clock-name>\n", argv[0].str);
+		printf("%s  ?\n", argv[0].str);
+		goto out;
+	}
+	if(argv[1].str[0] == '?')
+		print_clock_list();
+	else
+		clock_measure(argv[1].str);
+out:
+	return 0;
+}
+
+STATIC_COMMAND_START
+{ "test_clock", "Test Clock", &clock_tests },
+STATIC_COMMAND_END(clocktests);
+
+#endif
+
+APP_START(clocktests)
+APP_END
+
diff --git a/app/clocktests/rules.mk b/app/clocktests/rules.mk
new file mode 100644
index 0000000..761dd4d
--- /dev/null
+++ b/app/clocktests/rules.mk
@@ -0,0 +1,6 @@
+LOCAL_DIR := $(GET_LOCAL_DIR)
+
+INCLUDES += -I$(LK_TOP_DIR)/platform/msm_shared/include
+
+OBJS += \
+	$(LOCAL_DIR)/clock_tests.o