Fishwaldo commented on code in PR #19871:
URL: https://github.com/apache/nuttx/pull/19871#discussion_r3801054331
##########
include/nuttx/pinctrl/pinctrl.h:
##########
@@ -56,13 +58,47 @@
* Description: Select gpio function of pinctrl pin
* Argument: The uint32_t pinctrl number
*
+ * Command: PINCTRLC_GETPAD
+ * Description: Describe the current configuration of one pad
+ * Argument: A pointer to an instance of struct pinctrl_getpad_s
+ *
*/
#define PINCTRLC_SETFUNCTION _PINCTRLIOC(1)
#define PINCTRLC_SETSTRENGTH _PINCTRLIOC(2)
#define PINCTRLC_SETDRIVER _PINCTRLIOC(3)
#define PINCTRLC_SETSLEWRATE _PINCTRLIOC(4)
#define PINCTRLC_SELECTGPIO _PINCTRLIOC(5)
+#define PINCTRLC_GETPAD _PINCTRLIOC(6)
+
+/* Validity bits for struct pinctrl_padinfo_s. A field is meaningful only
+ * when its bit is set in the have member: a pad may have no function
+ * select, no bias, no drive strength.
+ */
+
+#define PINCTRL_HAVE_FUNCTION (1 << 0)
+#define PINCTRL_HAVE_STRENGTH (1 << 1)
+#define PINCTRL_HAVE_PULL (1 << 2)
+#define PINCTRL_HAVE_SLEWRATE (1 << 3)
+#define PINCTRL_HAVE_INPUT (1 << 4)
+#define PINCTRL_HAVE_SCHMITT (1 << 5)
+
+#define PINCTRL_NAME_MAX 24 /* Longest name plus a terminator */
+#define PINCTRL_EXTRA_MAX 48
+
+/* One pad in a controller's name table: the pad's name, then the name of
+ * each documented function select in select order. Pass NULL in a slot
+ * whose select the manual does not document. The compound literal sizes
+ * the array to exactly what is listed; at file scope it has static
+ * storage.
+ */
+
+#define PINCTRL_PADNAME(padname, ...) \
+ { \
+ (padname), (FAR const char *const[]){__VA_ARGS__}, \
+ sizeof((FAR const char *const[]){__VA_ARGS__}) / \
Review Comment:
Done
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