linux-kernel - [PATCH v2 1/4] dt-bindings: pinctrl: k3: Introduce pinmux definitions

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Message-ID: <20181113060111.16374-2-vigneshr@ti.com>
Date:   Tue, 13 Nov 2018 11:31:08 +0530
From:   Vignesh R <vigneshr@...com>
To:     Tero Kristo <t-kristo@...com>, Rob Herring <robh+dt@...nel.org>
CC:     Nishanth Menon <nm@...com>, Mark Rutland <mark.rutland@....com>,
        <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <devicetree@...r.kernel.org>, Vignesh R <vigneshr@...com>,
        <linux-omap@...r.kernel.org>,
        Linus Walleij <linus.walleij@...aro.org>,
        Tony Lindgren <tony@...mide.com>
Subject: [PATCH v2 1/4] dt-bindings: pinctrl: k3: Introduce pinmux definitions

The dt-bindings header for TI K3 AM6 SoCs define a set of macros for
defining pinmux configs in human readable form, instead of raw-coded
hex values.

Signed-off-by: Vignesh R <vigneshr@...com>
---
 MAINTAINERS                      |  1 +
 include/dt-bindings/pinctrl/k3.h | 35 ++++++++++++++++++++++++++++++++
 2 files changed, 36 insertions(+)
 create mode 100644 include/dt-bindings/pinctrl/k3.h

diff --git a/MAINTAINERS b/MAINTAINERS
index fa45ff36fde9..1574ad6d7ead 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -2204,6 +2204,7 @@ S:	Supported
 F:	Documentation/devicetree/bindings/arm/ti/k3.txt
 F:	arch/arm64/boot/dts/ti/Makefile
 F:	arch/arm64/boot/dts/ti/k3-*
+F:	include/dt-bindings/pinctrl/k3.h
 
 ARM/TEXAS INSTRUMENT KEYSTONE ARCHITECTURE
 M:	Santosh Shilimkar <ssantosh@...nel.org>
diff --git a/include/dt-bindings/pinctrl/k3.h b/include/dt-bindings/pinctrl/k3.h
new file mode 100644
index 000000000000..463d845a9b36
--- /dev/null
+++ b/include/dt-bindings/pinctrl/k3.h
@@ -0,0 +1,35 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * This header provides constants for pinctrl bindings for TI's K3 SoC
+ * family.
+ *
+ * Copyright (C) 2018 Texas Instruments Incorporated - http://www.ti.com/
+ */
+#ifndef _DT_BINDINGS_PINCTRL_TI_K3_H
+#define _DT_BINDINGS_PINCTRL_TI_K3_H
+
+#define PULLUDEN_SHIFT		(16)
+#define PULLTYPESEL_SHIFT	(17)
+#define RXACTIVE_SHIFT		(18)
+
+#define PULL_DISABLE		(1 << PULLUDEN_SHIFT)
+#define PULL_ENABLE		(0 << PULLUDEN_SHIFT)
+
+#define PULL_UP			(1 << PULLTYPESEL_SHIFT | PULL_ENABLE)
+#define PULL_DOWN		(0 << PULLTYPESEL_SHIFT | PULL_ENABLE)
+
+#define INPUT_EN		(1 << RXACTIVE_SHIFT)
+#define INPUT_DISABLE		(0 << RXACTIVE_SHIFT)
+
+/* Only these macros are expected be used directly in device tree files */
+#define PIN_OUTPUT		(INPUT_DISABLE | PULL_DISABLE)
+#define PIN_OUTPUT_PULLUP	(INPUT_DISABLE | PULL_UP)
+#define PIN_OUTPUT_PULLDOWN	(INPUT_DISABLE | PULL_DOWN)
+#define PIN_INPUT		(INPUT_EN | PULL_DISABLE)
+#define PIN_INPUT_PULLUP	(INPUT_EN | PULL_UP)
+#define PIN_INPUT_PULLDOWN	(INPUT_EN | PULL_DOWN)
+
+#define AM65X_IOPAD(pa, val, muxmode)		(((pa) & 0x1fff)) ((val) | (muxmode))
+#define AM65X_WKUP_IOPAD(pa, val, muxmode)	(((pa) & 0x1fff)) ((val) | (muxmode))
+
+#endif
-- 
2.19.1