[GIT PULL][PATCH] pinctrl: samsung: do not use bindings header with constants

[GIT PULL][PATCH] pinctrl: samsung: do not use bindings header with constants

[Krzysztof Kozlowski]

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
---

Hi Linus,

I have only one patch this cycle, so sending it directly.

Best regards,
Krzysztof


 drivers/pinctrl/samsung/pinctrl-exynos.c  | 6 ++----
 drivers/pinctrl/samsung/pinctrl-exynos.h  | 3 +++
 drivers/pinctrl/samsung/pinctrl-samsung.c | 4 +---
 drivers/pinctrl/samsung/pinctrl-samsung.h | 8 ++++++++
 4 files changed, 14 insertions(+), 7 deletions(-)

diff --git a/drivers/pinctrl/samsung/pinctrl-exynos.c b/drivers/pinctrl/samsung/pinctrl-exynos.c
index 6d7ca1758292..a8212fc126bf 100644
--- a/drivers/pinctrl/samsung/pinctrl-exynos.c
+++ b/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);
diff --git a/drivers/pinctrl/samsung/pinctrl-exynos.h b/drivers/pinctrl/samsung/pinctrl-exynos.h
index bfad1ced8017..7bd6d82c9f36 100644
--- a/drivers/pinctrl/samsung/pinctrl-exynos.h
+++ b/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
diff --git a/drivers/pinctrl/samsung/pinctrl-samsung.c b/drivers/pinctrl/samsung/pinctrl-samsung.c
index 26d309d2516d..4837bceb767b 100644
--- a/drivers/pinctrl/samsung/pinctrl-samsung.c
+++ b/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;
diff --git a/drivers/pinctrl/samsung/pinctrl-samsung.h b/drivers/pinctrl/samsung/pinctrl-samsung.h
index fc6f5199c548..9af93e3d8d9f 100644
--- a/drivers/pinctrl/samsung/pinctrl-samsung.h
+++ b/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
-- 
2.34.1

Re: [GIT PULL][PATCH] pinctrl: samsung: do not use bindings header with constants

[Linus Walleij]

On Fri, Jun 24, 2022 at 10:10 AM Krzysztof Kozlowski
<krzysztof.kozlowski@linaro.org> wrote:
>
> 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

Patch applied.

Yours,
Linus Walleij