pinctrl: pinconf: Allow groups to be configured via debugfs

[firefly-linux-kernel-4.4.55.git] / drivers / pinctrl / pinconf.c

diff --git a/drivers/pinctrl/pinconf.c b/drivers/pinctrl/pinconf.c
index 1fc09dc2019905d306813b497b1ae60a6ad0a765..4744d6363dfb217200d0278cba8f97928cd45064 100644 (file)
--- a/drivers/pinctrl/pinconf.c
+++ b/drivers/pinctrl/pinconf.c
@@ -470,10 +470,12 @@ exit:
  * pinconf_dbg_config_write() - modify the pinctrl config in the pinctrl
  * map, of a dev/pin/state entry based on user entries to pinconf-config
  * @user_buf: contains the modification request with expected format:
- *     modify config_pin <devicename> <state> <pinname> <newvalue>
+ *     modify <config> <devicename> <state> <name> <newvalue>
  * modify is literal string, alternatives like add/delete not supported yet
- * config_pin is literal, alternatives like config_mux not supported yet
- * <devicename> <state> <pinname> are values that should match the pinctrl-maps
+ * <config> is the configuration to be changed. Supported configs are
+ *     "config_pin" or "config_group", alternatives like config_mux are not
+ *     supported yet.
+ * <devicename> <state> <name> are values that should match the pinctrl-maps
  * <newvalue> reflects the new config and is driver dependant
  */
 static ssize_t pinconf_dbg_config_write(struct file *file,
@@ -511,13 +513,19 @@ static ssize_t pinconf_dbg_config_write(struct file *file,
        if (strcmp(token, "modify"))
                return -EINVAL;
 
-       /* Get arg type: "config_pin" type supported so far */
+       /*
+        * Get arg type: "config_pin" and "config_group"
+        *                types are supported so far
+        */
        token = strsep(&b, " ");
        if (!token)
                return -EINVAL;
-       if (strcmp(token, "config_pin"))
+       if (!strcmp(token, "config_pin"))
+               dbg->map_type = PIN_MAP_TYPE_CONFIGS_PIN;
+       else if (!strcmp(token, "config_group"))
+               dbg->map_type = PIN_MAP_TYPE_CONFIGS_GROUP;
+       else
                return -EINVAL;
-       dbg->map_type = PIN_MAP_TYPE_CONFIGS_PIN;
 
        /* get arg 'device_name' */
        token = strsep(&b, " ");