pinctrl: samsung: do not use bindings header with constants

The Samsung SoC pin controller driver uses only three defines from the
bindings header with pin configuration register values, which proves
the point that this header is not a proper bindings-type abstraction
layer with IDs.

Define the needed register values directly in the driver and stop using
the bindings header.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Chanho Park <chanho61.park@samsung.com>
Acked-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20220605160508.134075-8-krzysztof.kozlowski@linaro.org
Link: https://lore.kernel.org/r/20220624081022.32384-1-krzysztof.kozlowski@linaro.orgSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

drivers/pinctrl/samsung/pinctrl-exynos.c

@@ -27,8 +27,6 @@
 #include <linux/soc/samsung/exynos-pmu.h>
 #include <linux/soc/samsung/exynos-regs-pmu.h>
 
-#include <dt-bindings/pinctrl/samsung.h>
-
 #include "pinctrl-samsung.h"
 #include "pinctrl-exynos.h"
 
@@ -173,7 +171,7 @@ static int exynos_irq_request_resources(struct irq_data *irqd)
 
 	con = readl(bank->pctl_base + reg_con);
 	con &= ~(mask << shift);
-	con |= EXYNOS_PIN_FUNC_EINT << shift;
+	con |= EXYNOS_PIN_CON_FUNC_EINT << shift;
 	writel(con, bank->pctl_base + reg_con);
 
 	raw_spin_unlock_irqrestore(&bank->slock, flags);
@@ -196,7 +194,7 @@ static void exynos_irq_release_resources(struct irq_data *irqd)
 
 	con = readl(bank->pctl_base + reg_con);
 	con &= ~(mask << shift);
-	con |= EXYNOS_PIN_FUNC_INPUT << shift;
+	con |= PIN_CON_FUNC_INPUT << shift;
 	writel(con, bank->pctl_base + reg_con);
 
 	raw_spin_unlock_irqrestore(&bank->slock, flags);

drivers/pinctrl/samsung/pinctrl-exynos.h

@@ -16,6 +16,9 @@
 #ifndef __PINCTRL_SAMSUNG_EXYNOS_H
 #define __PINCTRL_SAMSUNG_EXYNOS_H
 
+/* Values for the pin CON register */
+#define EXYNOS_PIN_CON_FUNC_EINT	0xf
+
 /* External GPIO and wakeup interrupt related definitions */
 #define EXYNOS_GPIO_ECON_OFFSET		0x700
 #define EXYNOS_GPIO_EFLTCON_OFFSET	0x800

drivers/pinctrl/samsung/pinctrl-samsung.c

@@ -26,8 +26,6 @@
 #include <linux/of_device.h>
 #include <linux/spinlock.h>
 
-#include <dt-bindings/pinctrl/samsung.h>
-
 #include "../core.h"
 #include "pinctrl-samsung.h"
 
@@ -614,7 +612,7 @@ static int samsung_gpio_set_direction(struct gpio_chip *gc,
 	data = readl(reg);
 	data &= ~(mask << shift);
 	if (!input)
-		data |= EXYNOS_PIN_FUNC_OUTPUT << shift;
+		data |= PIN_CON_FUNC_OUTPUT << shift;
 	writel(data, reg);
 
 	return 0;

drivers/pinctrl/samsung/pinctrl-samsung.h

@@ -53,6 +53,14 @@ enum pincfg_type {
 #define PINCFG_UNPACK_TYPE(cfg)		((cfg) & PINCFG_TYPE_MASK)
 #define PINCFG_UNPACK_VALUE(cfg)	(((cfg) & PINCFG_VALUE_MASK) >> \
 						PINCFG_VALUE_SHIFT)
+/*
+ * Values for the pin CON register, choosing pin function.
+ * The basic set (input and output) are same between: S3C24xx, S3C64xx, S5PV210,
+ * Exynos ARMv7, Exynos ARMv8, Tesla FSD.
+ */
+#define PIN_CON_FUNC_INPUT		0x0
+#define PIN_CON_FUNC_OUTPUT		0x1
+
 /**
  * enum eint_type - possible external interrupt types.
  * @EINT_TYPE_NONE: bank does not support external interrupts