Merge patch series "pinctrl: add support of Airoha SoCs"

Mikhail Kshevetskiy <[email protected]> says:

This patch series add pin controller and gpio driver support for EN7523/
AN7581/AN7583 SoCs. The driver based on official linux airoha pinctrl
and gpio driver with Matheus Sampaio Queiroga changes.

The original Matheus Sampaio Queiroga driver can be taken from the repo:
  https://sirherobrine23.com.br/airoha_en7523/kernel/src/branch/airoha_en7523_pinctrl

Additionally in the EN7523 case the patches removes existing gpio dts
nodes and replaces them with pinctrl node. It should not be very
dangerous, because:
 * No official EN7523 gpio support present in U-Boot
 * Legacy Linux EN7523 GPIO driver is mostly abandoned
 * The same driver is planned for upstream linux/openwrt

This patchset includes bitfield.h patches created for Linux kernel by
Geert Uytterhoeven. It suits U-Boot fine. I preserve original author and
original commit messages. Please note me, if there is a better way.

The patches were tested on EN7523/AN7581/AN7583 boards.

Link: https://lore.kernel.org/r/[email protected]

1 files changed, 74 insertions, 0 deletions

diff --git a/include/linux/pinctrl/pinctrl.h b/include/linux/pinctrl/pinctrl.h
new file mode 100644
index 00000000000..32b56e0ab18
--- /dev/null
+++ b/include/linux/pinctrl/pinctrl.h
@@ -0,0 +1,74 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#ifndef __LINUX_PINCTRL_PINCTRL_H
+#define __LINUX_PINCTRL_PINCTRL_H
+
+#include <linux/types.h>
+
+/**
+ * struct pingroup - provides information on pingroup
+ * @name: a name for pingroup
+ * @pins: an array of pins in the pingroup
+ * @npins: number of pins in the pingroup
+ */
+struct pingroup {
+	const char *name;
+	const unsigned int *pins;
+	size_t npins;
+};
+
+/* Convenience macro to define a single named or anonymous pingroup */
+#define PINCTRL_PINGROUP(_name, _pins, _npins)	\
+(struct pingroup) {				\
+	.name = _name,				\
+	.pins = _pins,				\
+	.npins = _npins,			\
+}
+
+/**
+ * struct pinctrl_pin_desc - boards/machines provide information on their
+ * pins, pads or other muxable units in this struct
+ * @number: unique pin number from the global pin number space
+ * @name: a name for this pin
+ * @drv_data: driver-defined per-pin data. pinctrl core does not touch this
+ */
+struct pinctrl_pin_desc {
+	unsigned int number;
+	const char *name;
+	void *drv_data;
+};
+
+/* Convenience macro to define a single named or anonymous pin descriptor */
+#define PINCTRL_PIN(_number, _name)		\
+(struct pinctrl_pin_desc) {			\
+	.number = _number,			\
+	.name = _name,				\
+}
+
+#define PINCTRL_PIN_ANON(_number)		\
+(struct pinctrl_pin_desc) {			\
+	.number = _number,			\
+}
+
+/**
+ * struct pinfunction - Description about a function
+ * @name: Name of the function
+ * @groups: An array of groups for this function
+ * @ngroups: Number of groups in @groups
+ * @flags: Additional pin function flags
+ */
+struct pinfunction {
+	const char *name;
+	const char * const *groups;
+	size_t ngroups;
+};
+
+/* Convenience macro to define a single named pinfunction */
+#define PINCTRL_PINFUNCTION(_name, _groups, _ngroups)	\
+(struct pinfunction) {					\
+	.name = (_name),				\
+	.groups = (_groups),				\
+	.ngroups = (_ngroups),				\
+}
+
+#endif /* __LINUX_PINCTRL_PINCTRL_H */