diff mbox series

[v3,1/8] ARM: dts: s3c2410: use local header for pinctrl register values

Message ID 20220605160508.134075-2-krzysztof.kozlowski@linaro.org
State New
Headers show
Series pinctrl/arm: dt-bindings: deprecate header with register constants | expand

Commit Message

Krzysztof Kozlowski June 5, 2022, 4:05 p.m. UTC 
The DTS uses hardware register values directly in pin controller pin
configuration.  These are not some IDs or other abstraction layer but
raw numbers used in the registers.

These numbers were previously put in the bindings header to avoid code
duplication and to provide some context meaning (name), but they do not
fit the purpose of bindings.  It is also quite confusing to use
constants prefixed with Exynos for other SoC, because there is actually
nothing here in common, except the actual value.

Store the constants in a header next to DTS and use them instead of
bindings.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Chanho Park <chanho61.park@samsung.com>
---
 arch/arm/boot/dts/s3c2410-pinctrl.h    | 19 +++++++++++++
 arch/arm/boot/dts/s3c2416-pinctrl.dtsi | 38 +++++++++++++-------------
 2 files changed, 38 insertions(+), 19 deletions(-)
 create mode 100644 arch/arm/boot/dts/s3c2410-pinctrl.h

Comments

Krzysztof Kozlowski June 7, 2022, 6:39 a.m. UTC | #1 
On Sun, 5 Jun 2022 18:05:01 +0200, Krzysztof Kozlowski wrote:
> The DTS uses hardware register values directly in pin controller pin
> configuration.  These are not some IDs or other abstraction layer but
> raw numbers used in the registers.
> 
> These numbers were previously put in the bindings header to avoid code
> duplication and to provide some context meaning (name), but they do not
> fit the purpose of bindings.  It is also quite confusing to use
> constants prefixed with Exynos for other SoC, because there is actually
> nothing here in common, except the actual value.
> 
> [...]

Applied, thanks!

[1/8] ARM: dts: s3c2410: use local header for pinctrl register values
      https://git.kernel.org/krzk/linux/c/5dba27958273ffc0056795a479550957a134e981

Best regards,
diff mbox series

Patch

diff --git a/arch/arm/boot/dts/s3c2410-pinctrl.h b/arch/arm/boot/dts/s3c2410-pinctrl.h
new file mode 100644
index 000000000000..76b6171ae149
--- /dev/null
+++ b/arch/arm/boot/dts/s3c2410-pinctrl.h
@@ -0,0 +1,19 @@ 
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Samsung S3C2410 DTS pinctrl constants
+ *
+ * Copyright (c) 2016 Samsung Electronics Co., Ltd.
+ *		http://www.samsung.com
+ * Copyright (c) 2022 Linaro Ltd
+ * Author: Krzysztof Kozlowski <krzk@kernel.org>
+ */
+
+#ifndef __DTS_ARM_SAMSUNG_S3C2410_PINCTRL_H__
+#define __DTS_ARM_SAMSUNG_S3C2410_PINCTRL_H__
+
+#define S3C2410_PIN_FUNC_INPUT		0
+#define S3C2410_PIN_FUNC_OUTPUT		1
+#define S3C2410_PIN_FUNC_2		2
+#define S3C2410_PIN_FUNC_3		3
+
+#endif /* __DTS_ARM_SAMSUNG_S3C2410_PINCTRL_H__ */
diff --git a/arch/arm/boot/dts/s3c2416-pinctrl.dtsi b/arch/arm/boot/dts/s3c2416-pinctrl.dtsi
index 20a7d72827c2..3268366bd8bc 100644
--- a/arch/arm/boot/dts/s3c2416-pinctrl.dtsi
+++ b/arch/arm/boot/dts/s3c2416-pinctrl.dtsi
@@ -5,7 +5,7 @@ 
  * Copyright (c) 2013 Heiko Stuebner <heiko@sntech.de>
  */
 
-#include <dt-bindings/pinctrl/samsung.h>
+#include "s3c2410-pinctrl.h"
 
 &pinctrl_0 {
 	/*
@@ -82,91 +82,91 @@  gpm: gpm-gpio-bank {
 
 	uart0_data: uart0-data-pins {
 		samsung,pins = "gph-0", "gph-1";
-		samsung,pin-function = <EXYNOS_PIN_FUNC_2>;
+		samsung,pin-function = <S3C2410_PIN_FUNC_2>;
 	};
 
 	uart0_fctl: uart0-fctl-pins {
 		samsung,pins = "gph-8", "gph-9";
-		samsung,pin-function = <EXYNOS_PIN_FUNC_2>;
+		samsung,pin-function = <S3C2410_PIN_FUNC_2>;
 	};
 
 	uart1_data: uart1-data-pins {
 		samsung,pins = "gph-2", "gph-3";
-		samsung,pin-function = <EXYNOS_PIN_FUNC_2>;
+		samsung,pin-function = <S3C2410_PIN_FUNC_2>;
 	};
 
 	uart1_fctl: uart1-fctl-pins {
 		samsung,pins = "gph-10", "gph-11";
-		samsung,pin-function = <EXYNOS_PIN_FUNC_2>;
+		samsung,pin-function = <S3C2410_PIN_FUNC_2>;
 	};
 
 	uart2_data: uart2-data-pins {
 		samsung,pins = "gph-4", "gph-5";
-		samsung,pin-function = <EXYNOS_PIN_FUNC_2>;
+		samsung,pin-function = <S3C2410_PIN_FUNC_2>;
 	};
 
 	uart2_fctl: uart2-fctl-pins {
 		samsung,pins = "gph-6", "gph-7";
-		samsung,pin-function = <EXYNOS_PIN_FUNC_2>;
+		samsung,pin-function = <S3C2410_PIN_FUNC_2>;
 	};
 
 	uart3_data: uart3-data-pins {
 		samsung,pins = "gph-6", "gph-7";
-		samsung,pin-function = <EXYNOS_PIN_FUNC_2>;
+		samsung,pin-function = <S3C2410_PIN_FUNC_2>;
 	};
 
 	extuart_clk: extuart-clk-pins {
 		samsung,pins = "gph-12";
-		samsung,pin-function = <EXYNOS_PIN_FUNC_2>;
+		samsung,pin-function = <S3C2410_PIN_FUNC_2>;
 	};
 
 	i2c0_bus: i2c0-bus-pins {
 		samsung,pins = "gpe-14", "gpe-15";
-		samsung,pin-function = <EXYNOS_PIN_FUNC_2>;
+		samsung,pin-function = <S3C2410_PIN_FUNC_2>;
 	};
 
 	spi0_bus: spi0-bus-pins {
 		samsung,pins = "gpe-11", "gpe-12", "gpe-13";
-		samsung,pin-function = <EXYNOS_PIN_FUNC_2>;
+		samsung,pin-function = <S3C2410_PIN_FUNC_2>;
 	};
 
 	sd0_clk: sd0-clk-pins {
 		samsung,pins = "gpe-5";
-		samsung,pin-function = <EXYNOS_PIN_FUNC_2>;
+		samsung,pin-function = <S3C2410_PIN_FUNC_2>;
 	};
 
 	sd0_cmd: sd0-cmd-pins {
 		samsung,pins = "gpe-6";
-		samsung,pin-function = <EXYNOS_PIN_FUNC_2>;
+		samsung,pin-function = <S3C2410_PIN_FUNC_2>;
 	};
 
 	sd0_bus1: sd0-bus1-pins {
 		samsung,pins = "gpe-7";
-		samsung,pin-function = <EXYNOS_PIN_FUNC_2>;
+		samsung,pin-function = <S3C2410_PIN_FUNC_2>;
 	};
 
 	sd0_bus4: sd0-bus4-pins {
 		samsung,pins = "gpe-8", "gpe-9", "gpe-10";
-		samsung,pin-function = <EXYNOS_PIN_FUNC_2>;
+		samsung,pin-function = <S3C2410_PIN_FUNC_2>;
 	};
 
 	sd1_cmd: sd1-cmd-pins {
 		samsung,pins = "gpl-8";
-		samsung,pin-function = <EXYNOS_PIN_FUNC_2>;
+		samsung,pin-function = <S3C2410_PIN_FUNC_2>;
 	};
 
 	sd1_clk: sd1-clk-pins {
 		samsung,pins = "gpl-9";
-		samsung,pin-function = <EXYNOS_PIN_FUNC_2>;
+		samsung,pin-function = <S3C2410_PIN_FUNC_2>;
 	};
 
 	sd1_bus1: sd1-bus1-pins {
 		samsung,pins = "gpl-0";
-		samsung,pin-function = <EXYNOS_PIN_FUNC_2>;
+		samsung,pin-function = <S3C2410_PIN_FUNC_2>;
 	};
 
 	sd1_bus4: sd1-bus4-pins {
 		samsung,pins = "gpl-1", "gpl-2", "gpl-3";
-		samsung,pin-function = <EXYNOS_PIN_FUNC_2>;
+		samsung,pin-function = <S3C2410_PIN_FUNC_2>;
 	};
 };