pinctrl: allow pctldevs to decode pin config in debugfs

Add a pinconf op so that pin controller drivers can decode their pin
config settings for debugfs.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

1 files changed, 27 insertions, 4 deletions

diff --git a/drivers/pinctrl/pinconf.c b/drivers/pinctrl/pinconf.c
index 384dcc166e44..0133a69ad117 100644
--- a/drivers/pinctrl/pinconf.c
+++ b/drivers/pinctrl/pinconf.c
@@ -379,8 +379,16 @@ int pinconf_apply_setting(struct pinctrl_setting const *setting)
 
 void pinconf_show_map(struct seq_file *s, struct pinctrl_map const *map)
 {
+        struct pinctrl_dev *pctldev;
+        const struct pinconf_ops *confops;
         int i;
 
+        pctldev = get_pinctrl_dev_from_devname(map->ctrl_dev_name);
+        if (pctldev)
+                confops = pctldev->desc->confops;
+        else
+                confops = NULL;
+
         switch (map->type) {
         case PIN_MAP_TYPE_CONFIGS_PIN:
                 seq_printf(s, "pin ");
@@ -394,8 +402,15 @@ void pinconf_show_map(struct seq_file *s, struct pinctrl_map const *map)
 
         seq_printf(s, "%s\n", map->data.configs.group_or_pin);
 
-        for (i = 0; i < map->data.configs.num_configs; i++)
-                seq_printf(s, "config %08lx\n", map->data.configs.configs[i]);
+        for (i = 0; i < map->data.configs.num_configs; i++) {
+                seq_printf(s, "config ");
+                if (confops && confops->pin_config_config_dbg_show)
+                        confops->pin_config_config_dbg_show(pctldev, s,
+                                                map->data.configs.configs[i]);
+                else
+                        seq_printf(s, "%08lx", map->data.configs.configs[i]);
+                seq_printf(s, "\n");
+        }
 }
 
 void pinconf_show_setting(struct seq_file *s,
@@ -403,6 +418,7 @@ void pinconf_show_setting(struct seq_file *s,
 {
         struct pinctrl_dev *pctldev = setting->pctldev;
         const struct pinctrl_ops *pctlops = pctldev->desc->pctlops;
+        const struct pinconf_ops *confops = pctldev->desc->confops;
         struct pin_desc *desc;
         int i;
 
@@ -428,8 +444,15 @@ void pinconf_show_setting(struct seq_file *s,
          * FIXME: We should really get the pin controler to dump the config
          * values, so they can be decoded to something meaningful.
          */
-        for (i = 0; i < setting->data.configs.num_configs; i++)
-                seq_printf(s, " %08lx", setting->data.configs.configs[i]);
+        for (i = 0; i < setting->data.configs.num_configs; i++) {
+                seq_printf(s, " ");
+                if (confops && confops->pin_config_config_dbg_show)
+                        confops->pin_config_config_dbg_show(pctldev, s,
+                                setting->data.configs.configs[i]);
+                else
+                        seq_printf(s, "%08lx",
+                                   setting->data.configs.configs[i]);
+        }
 
         seq_printf(s, "\n");
 }