Publish clock divider/multiplier ratios and flags specific to our
clock provider implementation as these are not available via the
debugfs entries provided by the common clock framework.
Signed-off-by: James Kelly <jamespeterkelly@xxxxxxxxx>
---
.../clocking-wizard/clk-xlnx-clock-wizard.c | 57 ++++++++++++++++++++++
1 file changed, 57 insertions(+)
diff --git a/drivers/staging/clocking-wizard/clk-xlnx-clock-wizard.c b/drivers/staging/clocking-wizard/clk-xlnx-clock-wizard.c
index c892c0d46801..8929913045e7 100644
--- a/drivers/staging/clocking-wizard/clk-xlnx-clock-wizard.c
+++ b/drivers/staging/clocking-wizard/clk-xlnx-clock-wizard.c
@@ -69,6 +69,8 @@
#include <linux/module.h>
#include <linux/err.h>
#include <linux/regmap.h>
+#include <linux/debugfs.h>
+#include <linux/seq_file.h>
#define WZRD_MAX_OUTPUTS 7
#define KHz 1000UL
@@ -423,8 +425,63 @@ static unsigned long clk_wzrd_recalc_rate(struct clk_hw *hw,
return clk_wzrd_calc_rate(parent_rate, ratio, cwc->flags);
}
+#ifdef CONFIG_DEBUG_FS
+
+static int clk_wzrd_flags_show(struct seq_file *s, void *data)
+{
+ struct clk_wzrd_clk_data *cwc = s->private;
+
+ seq_puts(s, "Flags:\n");
+ if (cwc->flags & WZRD_FLAG_MULTIPLY)
+ seq_puts(s, "WZRD_FLAG_MULTIPLY\n");
+ if (cwc->flags & WZRD_FLAG_FRAC)
+ seq_puts(s, "WZRD_FLAG_FRAC\n");
+
+ return 0;
+}
+DEFINE_SHOW_ATTRIBUTE(clk_wzrd_flags);
+
+static int clk_wzrd_ratio_show(struct seq_file *s, void *data)
+{
+ struct clk_wzrd_clk_data *cwc = s->private;
+ unsigned int int_part, frac_part = 0;
+
+ regmap_field_read(cwc->int_field, &int_part);
+ if (cwc->flags & WZRD_FLAG_FRAC) {
+ regmap_field_read(cwc->frac_field, &frac_part);
+ seq_printf(s, "%u.%u\n", int_part, frac_part);
+ } else {
+ seq_printf(s, "%u\n", int_part);
+ }
+
+ return 0;
+}
+DEFINE_SHOW_ATTRIBUTE(clk_wzrd_ratio);
+
+static int clk_wzrd_debug_init(struct clk_hw *hw, struct dentry *dentry)
+{
+ struct dentry *d;
+ struct clk_wzrd_clk_data *cwc = to_clk_wzrd_clk_data(hw);
+
+ d = debugfs_create_file_unsafe("clk_hw_flags", 0444, dentry, cwc,
+ &clk_wzrd_flags_fops);
+ if (IS_ERR(d))
+ return PTR_ERR(d);
+
+ d = debugfs_create_file_unsafe("clk_ratio", 0444, dentry, cwc,
+ &clk_wzrd_ratio_fops);
+ if (IS_ERR(d))
+ return PTR_ERR(d);
+
+ return 0;
+}
+#endif
+
static const struct clk_ops clk_wzrd_clk_ops = {
.recalc_rate = clk_wzrd_recalc_rate,
+#ifdef CONFIG_DEBUG_FS
+ .debug_init = clk_wzrd_debug_init,
+#endif
};
static int clk_wzrd_register_clk(struct device *dev, const char *name,
--
2.15.1 (Apple Git-101)
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