Merge tag 'samsung-pinctrl-6.18' of https://git.kernel.org/pub/scm/linux/kernel/git/pinctrl/samsung into devel

Samsung pinctrl drivers changes for v6.18

1. Add pin controller drivers for new Axis ARTPEC-8 SoC. The SoC shares
all main blocks, including the pin controller, with Samsung SoC, so
same drivers and bindings are used.

2. Drop remaining support for Samsung S3C2410 SoC pin controllers. The
actual SoC support was removed in January 2023, so this is just
remaining cleanup.

Signed-off-by: Linus Walleij <[e-mail]>

Documentation/devicetree/bindings/pinctrl/samsung,pinctrl-wakeup-interrupt.yaml

···
   compatible:
     oneOf:
       - enum:
-          - samsung,s3c2410-wakeup-eint
-          - samsung,s3c2412-wakeup-eint
           - samsung,s3c64xx-wakeup-eint
           - samsung,s5pv210-wakeup-eint
           - samsung,exynos4210-wakeup-eint
···
     description:
       Interrupt used by multiplexed external wake-up interrupts.
     minItems: 1
-    maxItems: 6
+    maxItems: 4
 
 required:
   - compatible
 
 allOf:
-  - if:
-      properties:
-        compatible:
-          contains:
-            enum:
-              - samsung,s3c2410-wakeup-eint
-              - samsung,s3c2412-wakeup-eint
-    then:
-      properties:
-        interrupts:
-          minItems: 6
-          maxItems: 6
-      required:
-        - interrupts
-
   - if:
       properties:
         compatible:

Documentation/devicetree/bindings/pinctrl/samsung,pinctrl.yaml

···
 
   compatible:
     enum:
+      - axis,artpec8-pinctrl
       - google,gs101-pinctrl
-      - samsung,s3c2412-pinctrl
-      - samsung,s3c2416-pinctrl
-      - samsung,s3c2440-pinctrl
-      - samsung,s3c2450-pinctrl
       - samsung,s3c64xx-pinctrl
       - samsung,s5pv210-pinctrl
       - samsung,exynos2200-pinctrl

drivers/pinctrl/samsung/pinctrl-exynos-arm64.c

···
 	.reg_offset = { 0x00, 0x04, 0x08, 0x0c, 0x10, 0x14, },
 };
 
+/*
+ * Bank type for non-alive type. Bit fields:
+ * CON: 4, DAT: 1, PUD: 4, DRV: 4
+ */
+static const struct samsung_pin_bank_type artpec_bank_type_off = {
+	.fld_width = { 4, 1, 4, 4, },
+	.reg_offset = { 0x00, 0x04, 0x08, 0x0c, },
+};
+
 /* Pad retention control code for accessing PMU regmap */
 static atomic_t exynos_shared_retention_refcnt;
 
···
 const struct samsung_pinctrl_of_match_data gs101_of_data __initconst = {
 	.ctrl		= gs101_pin_ctrl,
 	.num_ctrl	= ARRAY_SIZE(gs101_pin_ctrl),
+};
+
+/* pin banks of artpec8 pin-controller (FSYS0) */
+static const struct samsung_pin_bank_data artpec8_pin_banks0[] __initconst = {
+	ARTPEC_PIN_BANK_EINTG(5, 0x000, "gpf0", 0x00),
+	ARTPEC_PIN_BANK_EINTG(4, 0x020, "gpf1", 0x04),
+	ARTPEC_PIN_BANK_EINTG(8, 0x040, "gpf2", 0x08),
+	ARTPEC_PIN_BANK_EINTG(4, 0x060, "gpf3", 0x0c),
+	ARTPEC_PIN_BANK_EINTG(7, 0x080, "gpf4", 0x10),
+	ARTPEC_PIN_BANK_EINTG(8, 0x0a0, "gpe0", 0x14),
+	ARTPEC_PIN_BANK_EINTG(8, 0x0c0, "gpe1", 0x18),
+	ARTPEC_PIN_BANK_EINTG(6, 0x0e0, "gpe2", 0x1c),
+	ARTPEC_PIN_BANK_EINTG(8, 0x100, "gps0", 0x20),
+	ARTPEC_PIN_BANK_EINTG(8, 0x120, "gps1", 0x24),
+};
+
+/* pin banks of artpec8 pin-controller (PERIC) */
+static const struct samsung_pin_bank_data artpec8_pin_banks1[] __initconst = {
+	ARTPEC_PIN_BANK_EINTG(8, 0x000, "gpa0", 0x00),
+	ARTPEC_PIN_BANK_EINTG(8, 0x020, "gpa1", 0x04),
+	ARTPEC_PIN_BANK_EINTG(8, 0x040, "gpa2", 0x08),
+	ARTPEC_PIN_BANK_EINTG(2, 0x060, "gpk0", 0x0c),
+};
+
+static const struct samsung_pin_ctrl artpec8_pin_ctrl[] __initconst = {
+	{
+		/* pin-controller instance 0 FSYS data */
+		.pin_banks	= artpec8_pin_banks0,
+		.nr_banks	= ARRAY_SIZE(artpec8_pin_banks0),
+		.eint_gpio_init	= exynos_eint_gpio_init,
+	}, {
+		/* pin-controller instance 1 PERIC data */
+		.pin_banks	= artpec8_pin_banks1,
+		.nr_banks	= ARRAY_SIZE(artpec8_pin_banks1),
+		.eint_gpio_init	= exynos_eint_gpio_init,
+	},
+};
+
+const struct samsung_pinctrl_of_match_data artpec8_of_data __initconst = {
+	.ctrl		= artpec8_pin_ctrl,
+	.num_ctrl	= ARRAY_SIZE(artpec8_pin_ctrl),
 };

drivers/pinctrl/samsung/pinctrl-exynos.h

···
 		.name			= id				\
 	}
 
+#define ARTPEC_PIN_BANK_EINTG(pins, reg, id, offs)			\
+	{								\
+		.type			= &artpec_bank_type_off,	\
+		.pctl_offset		= reg,				\
+		.nr_pins		= pins,				\
+		.eint_type		= EINT_TYPE_GPIO,		\
+		.eint_offset		= offs,				\
+		.name			= id				\
+	}
+
 /**
  * struct exynos_weint_data: irq specific data for all the wakeup interrupts
  * generated by the external wakeup interrupt controller.

drivers/pinctrl/samsung/pinctrl-samsung.c

···
 		.data = &s5pv210_of_data },
 #endif
 #ifdef CONFIG_PINCTRL_EXYNOS_ARM64
+	{ .compatible = "axis,artpec8-pinctrl",
+		.data = &artpec8_of_data },
 	{ .compatible = "google,gs101-pinctrl",
 		.data = &gs101_of_data },
 	{ .compatible = "samsung,exynos2200-pinctrl",

drivers/pinctrl/samsung/pinctrl-samsung.h

···
 };
 
 /* list of all exported SoC specific data */
+extern const struct samsung_pinctrl_of_match_data artpec8_of_data;
 extern const struct samsung_pinctrl_of_match_data exynos2200_of_data;
 extern const struct samsung_pinctrl_of_match_data exynos3250_of_data;
 extern const struct samsung_pinctrl_of_match_data exynos4210_of_data;
···
 extern const struct samsung_pinctrl_of_match_data fsd_of_data;
 extern const struct samsung_pinctrl_of_match_data gs101_of_data;
 extern const struct samsung_pinctrl_of_match_data s3c64xx_of_data;
-extern const struct samsung_pinctrl_of_match_data s3c2412_of_data;
-extern const struct samsung_pinctrl_of_match_data s3c2416_of_data;
-extern const struct samsung_pinctrl_of_match_data s3c2440_of_data;
-extern const struct samsung_pinctrl_of_match_data s3c2450_of_data;
 extern const struct samsung_pinctrl_of_match_data s5pv210_of_data;
 
 #endif /* __PINCTRL_SAMSUNG_H */