From: Grant Likely <grant.likely@linaro.org>
To: linux-kernel@vger.kernel.org, devicetree@vger.kernel.org
Cc: Grant Likely <grant.likely@linaro.org>
Subject: [PATCH] of: Add helper for printing an of_phandle_args structure
Date: Mon, 14 Oct 2013 11:50:51 +0100 [thread overview]
Message-ID: <1381747851-20594-1-git-send-email-grant.likely@linaro.org> (raw)
It is sometimes useful for debug to get the contents of an
of_phandle_args structure out into the kernel log.
Signed-off-by: Grant Likely <grant.likely@linaro.org>
---
drivers/of/base.c | 9 +++++++++
drivers/of/irq.c | 6 +++---
include/linux/of.h | 1 +
3 files changed, 13 insertions(+), 3 deletions(-)
diff --git a/drivers/of/base.c b/drivers/of/base.c
index 924ba04..4caa9f4 100644
--- a/drivers/of/base.c
+++ b/drivers/of/base.c
@@ -1192,6 +1192,15 @@ int of_property_count_strings(struct device_node *np, const char *propname)
}
EXPORT_SYMBOL_GPL(of_property_count_strings);
+void of_print_phandle_args(const char *msg, const struct of_phandle_args *args)
+{
+ int i;
+ printk("%s %s", msg, of_node_full_name(args->np));
+ for (i = 0; i < args->args_count; i++)
+ printk(i ? ",%08x" : ":%08x", args->args[i]);
+ printk("\n");
+}
+
static int __of_parse_phandle_with_args(const struct device_node *np,
const char *list_name,
const char *cells_name,
diff --git a/drivers/of/irq.c b/drivers/of/irq.c
index b6c32bc..4bda131 100644
--- a/drivers/of/irq.c
+++ b/drivers/of/irq.c
@@ -101,9 +101,9 @@ int of_irq_parse_raw(const __be32 *addr, struct of_phandle_args *out_irq)
u32 intsize = 1, addrsize, newintsize = 0, newaddrsize = 0;
int imaplen, match, i;
- pr_debug("of_irq_parse_raw: par=%s,intspec=[0x%08x 0x%08x...],ointsize=%d\n",
- of_node_full_name(out_irq->np), out_irq->args[0], out_irq->args[1],
- out_irq->args_count);
+#ifdef DEBUG
+ of_print_phandle_args("of_irq_parse_raw: ", out_irq);
+#endif
ipar = of_node_get(out_irq->np);
diff --git a/include/linux/of.h b/include/linux/of.h
index 54017b8..5ea16e5 100644
--- a/include/linux/of.h
+++ b/include/linux/of.h
@@ -277,6 +277,7 @@ extern int of_n_size_cells(struct device_node *np);
extern const struct of_device_id *of_match_node(
const struct of_device_id *matches, const struct device_node *node);
extern int of_modalias_node(struct device_node *node, char *modalias, int len);
+extern void of_print_phandle_args(const char *msg, const struct of_phandle_args *args);
extern struct device_node *of_parse_phandle(const struct device_node *np,
const char *phandle_name,
int index);
--
1.8.1.2
reply other threads:[~2013-10-14 10:50 UTC|newest]
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