[PATCH 09/13] pinctrl: exynos: Add pinctrl support for Exynos850

[Sam Protsenko]

Add pinctrl support for Exynos850 SoC. It was mostly extracted from
corresponding Linux kernel code [1]. Power down modes and external
interrupt data were removed while converting the code for U-Boot, but
everything else was kept almost unchanged.

[1] drivers/pinctrl/samsung/pinctrl-exynos-arm64.c

Signed-off-by: Sam Protsenko <semen.protsenko at linaro.org>
---
 drivers/pinctrl/exynos/Kconfig             |   8 ++
 drivers/pinctrl/exynos/Makefile            |   1 +
 drivers/pinctrl/exynos/pinctrl-exynos850.c | 125 +++++++++++++++++++++
 3 files changed, 134 insertions(+)
 create mode 100644 drivers/pinctrl/exynos/pinctrl-exynos850.c

diff --git a/drivers/pinctrl/exynos/Kconfig b/drivers/pinctrl/exynos/Kconfig
index a60f49869b45..1b7fb62bc4ba 100644
--- a/drivers/pinctrl/exynos/Kconfig
+++ b/drivers/pinctrl/exynos/Kconfig
@@ -16,3 +16,11 @@ config PINCTRL_EXYNOS78x0
 	help
 	  Support pin multiplexing and pin configuration control on
 	  Samsung's Exynos78x0 SoC.
+
+config PINCTRL_EXYNOS850
+	bool "Samsung Exynos850 pinctrl driver"
+	depends on ARCH_EXYNOS && PINCTRL_FULL
+	select PINCTRL_EXYNOS
+	help
+	  Support pin multiplexing and pin configuration control on
+	  Samsung's Exynos850 SoC.
diff --git a/drivers/pinctrl/exynos/Makefile b/drivers/pinctrl/exynos/Makefile
index 07db970ca942..3abe1226eb74 100644
--- a/drivers/pinctrl/exynos/Makefile
+++ b/drivers/pinctrl/exynos/Makefile
@@ -6,3 +6,4 @@
 obj-$(CONFIG_PINCTRL_EXYNOS)		+= pinctrl-exynos.o
 obj-$(CONFIG_PINCTRL_EXYNOS7420)	+= pinctrl-exynos7420.o
 obj-$(CONFIG_PINCTRL_EXYNOS78x0)	+= pinctrl-exynos78x0.o
+obj-$(CONFIG_PINCTRL_EXYNOS850)		+= pinctrl-exynos850.o
diff --git a/drivers/pinctrl/exynos/pinctrl-exynos850.c b/drivers/pinctrl/exynos/pinctrl-exynos850.c
new file mode 100644
index 000000000000..2445dd752ea8
--- /dev/null
+++ b/drivers/pinctrl/exynos/pinctrl-exynos850.c
@@ -0,0 +1,125 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2023 Linaro Ltd.
+ * Author: Sam Protsenko <semen.protsenko at linaro.org>
+ *
+ * Samsung Exynos USI driver (Universal Serial Interface).
+ */
+
+#include <dm.h>
+#include <dm/pinctrl.h>
+#include "pinctrl-exynos.h"
+
+#define EXYNOS850_PIN_BANK(pins, reg, id)		\
+	{						\
+		.type		= &exynos850_bank_type,	\
+		.offset		= reg,			\
+		.nr_pins	= pins,			\
+		.name		= id			\
+	}
+
+/* CON, DAT, PUD, DRV */
+static const struct samsung_pin_bank_type exynos850_bank_type = {
+	.fld_width = { 4, 1, 4, 4, },
+	.reg_offset = { 0x00, 0x04, 0x08, 0x0c, },
+};
+
+static const struct pinctrl_ops exynos850_pinctrl_ops = {
+	.set_state = exynos_pinctrl_set_state
+};
+
+/* pin banks of exynos850 pin-controller 0 (ALIVE) */
+static const struct samsung_pin_bank_data exynos850_pin_banks0[] = {
+	EXYNOS850_PIN_BANK(8, 0x000, "gpa0"),
+	EXYNOS850_PIN_BANK(8, 0x020, "gpa1"),
+	EXYNOS850_PIN_BANK(8, 0x040, "gpa2"),
+	EXYNOS850_PIN_BANK(8, 0x060, "gpa3"),
+	EXYNOS850_PIN_BANK(4, 0x080, "gpa4"),
+	EXYNOS850_PIN_BANK(3, 0x0a0, "gpq0"),
+};
+
+/* pin banks of exynos850 pin-controller 1 (CMGP) */
+static const struct samsung_pin_bank_data exynos850_pin_banks1[] = {
+	EXYNOS850_PIN_BANK(1, 0x000, "gpm0"),
+	EXYNOS850_PIN_BANK(1, 0x020, "gpm1"),
+	EXYNOS850_PIN_BANK(1, 0x040, "gpm2"),
+	EXYNOS850_PIN_BANK(1, 0x060, "gpm3"),
+	EXYNOS850_PIN_BANK(1, 0x080, "gpm4"),
+	EXYNOS850_PIN_BANK(1, 0x0a0, "gpm5"),
+	EXYNOS850_PIN_BANK(1, 0x0c0, "gpm6"),
+	EXYNOS850_PIN_BANK(1, 0x0e0, "gpm7"),
+};
+
+/* pin banks of exynos850 pin-controller 2 (AUD) */
+static const struct samsung_pin_bank_data exynos850_pin_banks2[] = {
+	EXYNOS850_PIN_BANK(5, 0x000, "gpb0"),
+	EXYNOS850_PIN_BANK(5, 0x020, "gpb1"),
+};
+
+/* pin banks of exynos850 pin-controller 3 (HSI) */
+static const struct samsung_pin_bank_data exynos850_pin_banks3[] = {
+	EXYNOS850_PIN_BANK(6, 0x000, "gpf2"),
+};
+
+/* pin banks of exynos850 pin-controller 4 (CORE) */
+static const struct samsung_pin_bank_data exynos850_pin_banks4[] = {
+	EXYNOS850_PIN_BANK(4, 0x000, "gpf0"),
+	EXYNOS850_PIN_BANK(8, 0x020, "gpf1"),
+};
+
+/* pin banks of exynos850 pin-controller 5 (PERI) */
+static const struct samsung_pin_bank_data exynos850_pin_banks5[] = {
+	EXYNOS850_PIN_BANK(2, 0x000, "gpg0"),
+	EXYNOS850_PIN_BANK(6, 0x020, "gpp0"),
+	EXYNOS850_PIN_BANK(4, 0x040, "gpp1"),
+	EXYNOS850_PIN_BANK(4, 0x060, "gpp2"),
+	EXYNOS850_PIN_BANK(8, 0x080, "gpg1"),
+	EXYNOS850_PIN_BANK(8, 0x0a0, "gpg2"),
+	EXYNOS850_PIN_BANK(1, 0x0c0, "gpg3"),
+	EXYNOS850_PIN_BANK(3, 0x0e0, "gpc0"),
+	EXYNOS850_PIN_BANK(6, 0x100, "gpc1"),
+};
+
+static const struct samsung_pin_ctrl exynos850_pin_ctrl[] = {
+	{
+		/* pin-controller instance 0 ALIVE data */
+		.pin_banks	= exynos850_pin_banks0,
+		.nr_banks	= ARRAY_SIZE(exynos850_pin_banks0),
+	}, {
+		/* pin-controller instance 1 CMGP data */
+		.pin_banks	= exynos850_pin_banks1,
+		.nr_banks	= ARRAY_SIZE(exynos850_pin_banks1),
+	}, {
+		/* pin-controller instance 2 AUD data */
+		.pin_banks	= exynos850_pin_banks2,
+		.nr_banks	= ARRAY_SIZE(exynos850_pin_banks2),
+	}, {
+		/* pin-controller instance 3 HSI data */
+		.pin_banks	= exynos850_pin_banks3,
+		.nr_banks	= ARRAY_SIZE(exynos850_pin_banks3),
+	}, {
+		/* pin-controller instance 4 CORE data */
+		.pin_banks	= exynos850_pin_banks4,
+		.nr_banks	= ARRAY_SIZE(exynos850_pin_banks4),
+	}, {
+		/* pin-controller instance 5 PERI data */
+		.pin_banks	= exynos850_pin_banks5,
+		.nr_banks	= ARRAY_SIZE(exynos850_pin_banks5),
+	},
+	{/* list terminator */}
+};
+
+static const struct udevice_id exynos850_pinctrl_ids[] = {
+	{ .compatible = "samsung,exynos850-pinctrl",
+		.data = (ulong)exynos850_pin_ctrl },
+	{ }
+};
+
+U_BOOT_DRIVER(pinctrl_exynos850) = {
+	.name		= "pinctrl_exynos850",
+	.id		= UCLASS_PINCTRL,
+	.of_match	= exynos850_pinctrl_ids,
+	.priv_auto	= sizeof(struct exynos_pinctrl_priv),
+	.ops		= &exynos850_pinctrl_ops,
+	.probe		= exynos_pinctrl_probe,
+};
-- 
2.39.2