clk: qcom: clk-debug: Add support for debug clock API's

Add support for qcom_clk_dump and qcom_clk_bulk_dump API's
which can be used by the clients to dump the registers
associated with the clock and it's parents.

Change-Id: Iea7f30bb4e789e41dbae41b88514ffd53c136174
Signed-off-by: Jagadeesh Kona <jkona@codeaurora.org>

drivers/clk/qcom/clk-debug.c

@@ -10,6 +10,7 @@
 #include <linux/clk-provider.h>
 #include <linux/of.h>
 #include <linux/bitops.h>
+#include <linux/clk/qcom.h>
 #include <linux/mfd/syscon.h>
 
 #include "clk-regmap.h"
@@ -562,3 +563,48 @@ void clk_common_debug_init(struct clk_hw *hw, struct dentry *dentry)
 
 };
 
+/**
+ * qcom_clk_dump - dump the HW specific registers associated with this clock
+ * @clk: clock source
+ * @calltrace: indicates whether calltrace is required
+ *
+ * This function attempts to print all the registers associated with the
+ * clock and it's parents.
+ */
+void qcom_clk_dump(struct clk *clk, bool calltrace)
+{
+	struct clk_hw *hw;
+
+	if (IS_ERR_OR_NULL(clk))
+		return;
+
+	hw = __clk_get_hw(clk);
+	if (IS_ERR_OR_NULL(hw))
+		return;
+
+	pr_info("Dumping %s Registers:\n", clk_hw_get_name(hw));
+	WARN_CLK(hw, calltrace, "");
+}
+EXPORT_SYMBOL(qcom_clk_dump);
+
+/**
+ * qcom_clk_bulk_dump - dump the HW specific registers associated with clocks
+ * @clks: the clk_bulk_data table of consumer
+ * @num_clks: the number of clk_bulk_data
+ * @calltrace: indicates whether calltrace is required
+ *
+ * This function attempts to print all the registers associated with the
+ * clock and it's parents for all the clocks in the list.
+ */
+void qcom_clk_bulk_dump(int num_clks, struct clk_bulk_data *clks,
+			bool calltrace)
+{
+	int i;
+
+	if (IS_ERR_OR_NULL(clks))
+		return;
+
+	for (i = 0; i < num_clks; i++)
+		qcom_clk_dump(clks[i].clk, calltrace);
+}
+EXPORT_SYMBOL(qcom_clk_bulk_dump);

include/linux/clk/qcom.h

@@ -6,7 +6,7 @@
 #ifndef __LINUX_CLK_QCOM_H_
 #define __LINUX_CLK_QCOM_H_
 
-#include <linux/clk-provider.h>
+#include <linux/clk.h>
 
 enum branch_mem_flags {
 	CLKFLAG_RETAIN_PERIPH,
@@ -19,5 +19,8 @@ enum branch_mem_flags {
 
 int qcom_clk_get_voltage(struct clk *clk, unsigned long rate);
 int qcom_clk_set_flags(struct clk *clk, unsigned long flags);
+void qcom_clk_dump(struct clk *clk, bool calltrace);
+void qcom_clk_bulk_dump(int num_clks, struct clk_bulk_data *clks,
+			bool calltrace);
 
 #endif  /* __LINUX_CLK_QCOM_H_ */