pinctrl: generic: dump pin configuration

Add the support of dumping pin configuration.

Signed-off-by: Haojian Zhuang <haojian.zhuang@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

diff --git a/drivers/pinctrl/pinconf-generic.c b/drivers/pinctrl/pinconf-generic.c
index 06c304a..9c43685 100644 (file)
--- a/drivers/pinctrl/pinconf-generic.c
+++ b/drivers/pinctrl/pinconf-generic.c
@@ -12,6 +12,7 @@
 #define pr_fmt(fmt) "generic pinconfig core: " fmt
 
 #include <linux/kernel.h>
+#include <linux/module.h>
 #include <linux/init.h>
 #include <linux/device.h>
 #include <linux/slab.h>
@@ -120,4 +121,17 @@ void pinconf_generic_dump_group(struct pinctrl_dev *pctldev,
        }
 }
 
+void pinconf_generic_dump_config(struct pinctrl_dev *pctldev,
+                                struct seq_file *s, unsigned long config)
+{
+       int i;
+
+       for(i = 0; i < ARRAY_SIZE(conf_items); i++) {
+               if (pinconf_to_config_param(config) != conf_items[i].param)
+                       continue;
+               seq_printf(s, "%s: 0x%x", conf_items[i].display,
+                          pinconf_to_config_argument(config));
+       }
+}
+EXPORT_SYMBOL_GPL(pinconf_generic_dump_config);
 #endif

diff --git a/drivers/pinctrl/pinconf.h b/drivers/pinctrl/pinconf.h
index e3ed8cb..1f7113e 100644 (file)
--- a/drivers/pinctrl/pinconf.h
+++ b/drivers/pinctrl/pinconf.h
@@ -98,6 +98,8 @@ void pinconf_generic_dump_pin(struct pinctrl_dev *pctldev,
 void pinconf_generic_dump_group(struct pinctrl_dev *pctldev,
                              struct seq_file *s, const char *gname);
 
+void pinconf_generic_dump_config(struct pinctrl_dev *pctldev,
+                                struct seq_file *s, unsigned long config);
 #else
 
 static inline void pinconf_generic_dump_pin(struct pinctrl_dev *pctldev,
@@ -114,4 +116,10 @@ static inline void pinconf_generic_dump_group(struct pinctrl_dev *pctldev,
        return;
 }
 
+static inline void pinconf_generic_dump_config(struct pinctrl_dev *pctldev,
+                                              struct seq_file *s,
+                                              unsigned long config)
+{
+       return;
+}
 #endif