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From:   Icenowy Zheng <icenowy@aosc.io>
To:     Rob Herring <robh+dt@kernel.org>,
        Maxime Ripard <maxime.ripard@bootlin.com>,
        Chen-Yu Tsai <wens@csie.org>,
        Linus Walleij <linus.walleij@linaro.org>
Cc:     linux-clk@vger.kernel.org, devicetree@vger.kernel.org,
        linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org,
        linux-gpio@vger.kernel.org, linux-sunxi@googlegroups.com,
        Icenowy Zheng <icenowy@aosc.io>
Subject: [PATCH 3/7] pinctrl: sunxi: add support for H6 R_PIO pin controller
Date:   Fri,  4 May 2018 02:38:43 +0800
Message-Id: <20180503183847.11046-4-icenowy@aosc.io>
In-Reply-To: <20180503183847.11046-1-icenowy@aosc.io>
References: <20180503183847.11046-1-icenowy@aosc.io>
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

Allwinner H6 SoC has a R_PIO pin controller like other Allwinner SoCs,
which controls the PL and PM pin banks.

Add support for it.

Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
---
 .../bindings/pinctrl/allwinner,sunxi-pinctrl.txt   |   1 +
 drivers/pinctrl/sunxi/Kconfig                      |   4 +
 drivers/pinctrl/sunxi/Makefile                     |   1 +
 drivers/pinctrl/sunxi/pinctrl-sun50i-h6-r.c        | 128 +++++++++++++++++++++
 4 files changed, 134 insertions(+)
 create mode 100644 drivers/pinctrl/sunxi/pinctrl-sun50i-h6-r.c

diff --git a/Documentation/devicetree/bindings/pinctrl/allwinner,sunxi-pinctrl.txt b/Documentation/devicetree/bindings/pinctrl/allwinner,sunxi-pinctrl.txt
index 64bc5c2a76da..258a4648ab81 100644
--- a/Documentation/devicetree/bindings/pinctrl/allwinner,sunxi-pinctrl.txt
+++ b/Documentation/devicetree/bindings/pinctrl/allwinner,sunxi-pinctrl.txt
@@ -28,6 +28,7 @@ Required properties:
   "allwinner,sun50i-a64-r-pinctrl"
   "allwinner,sun50i-h5-pinctrl"
   "allwinner,sun50i-h6-pinctrl"
+  "allwinner,sun50i-h6-r-pinctrl"
   "nextthing,gr8-pinctrl"
 
 - reg: Should contain the register physical address and length for the
diff --git a/drivers/pinctrl/sunxi/Kconfig b/drivers/pinctrl/sunxi/Kconfig
index 5de1f63b07bb..95282cda6cee 100644
--- a/drivers/pinctrl/sunxi/Kconfig
+++ b/drivers/pinctrl/sunxi/Kconfig
@@ -81,4 +81,8 @@ config PINCTRL_SUN50I_H6
 	def_bool ARM64 && ARCH_SUNXI
 	select PINCTRL_SUNXI
 
+config PINCTRL_SUN50I_H6_R
+	def_bool ARM64 && ARCH_SUNXI
+	select PINCTRL_SUNXI
+
 endif
diff --git a/drivers/pinctrl/sunxi/Makefile b/drivers/pinctrl/sunxi/Makefile
index 3c4aec6611e9..adb8443aa55c 100644
--- a/drivers/pinctrl/sunxi/Makefile
+++ b/drivers/pinctrl/sunxi/Makefile
@@ -19,5 +19,6 @@ obj-$(CONFIG_PINCTRL_SUN8I_H3_R)	+= pinctrl-sun8i-h3-r.o
 obj-$(CONFIG_PINCTRL_SUN8I_V3S)		+= pinctrl-sun8i-v3s.o
 obj-$(CONFIG_PINCTRL_SUN50I_H5)		+= pinctrl-sun50i-h5.o
 obj-$(CONFIG_PINCTRL_SUN50I_H6)		+= pinctrl-sun50i-h6.o
+obj-$(CONFIG_PINCTRL_SUN50I_H6_R)	+= pinctrl-sun50i-h6-r.o
 obj-$(CONFIG_PINCTRL_SUN9I_A80)		+= pinctrl-sun9i-a80.o
 obj-$(CONFIG_PINCTRL_SUN9I_A80_R)	+= pinctrl-sun9i-a80-r.o
diff --git a/drivers/pinctrl/sunxi/pinctrl-sun50i-h6-r.c b/drivers/pinctrl/sunxi/pinctrl-sun50i-h6-r.c
new file mode 100644
index 000000000000..4557e18d5989
--- /dev/null
+++ b/drivers/pinctrl/sunxi/pinctrl-sun50i-h6-r.c
@@ -0,0 +1,128 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Allwinner H6 R_PIO pin controller driver
+ *
+ * Copyright (C) 2017 Icenowy Zheng <icenowy@aosc.io>
+ *
+ * Based on pinctrl-sun6i-a31-r.c, which is:
+ *   Copyright (C) 2014 Boris Brezillon
+ *   Boris Brezillon <boris.brezillon@free-electrons.com>
+ *   Copyright (C) 2014 Maxime Ripard
+ *   Maxime Ripard <maxime.ripard@free-electrons.com>
+ */
+
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/pinctrl/pinctrl.h>
+#include <linux/reset.h>
+
+#include "pinctrl-sunxi.h"
+
+static const struct sunxi_desc_pin sun50i_h6_r_pins[] = {
+	SUNXI_PIN(SUNXI_PINCTRL_PIN(L, 0),
+		  SUNXI_FUNCTION(0x0, "gpio_in"),
+		  SUNXI_FUNCTION(0x1, "gpio_out"),
+		  SUNXI_FUNCTION(0x3, "s_i2c"),		/* SCK */
+		  SUNXI_FUNCTION_IRQ_BANK(0x6, 0, 0)),	/* PL_EINT0 */
+	SUNXI_PIN(SUNXI_PINCTRL_PIN(L, 1),
+		  SUNXI_FUNCTION(0x0, "gpio_in"),
+		  SUNXI_FUNCTION(0x1, "gpio_out"),
+		  SUNXI_FUNCTION(0x3, "s_i2c"),		/* SDA */
+		  SUNXI_FUNCTION_IRQ_BANK(0x6, 0, 1)),	/* PL_EINT1 */
+	SUNXI_PIN(SUNXI_PINCTRL_PIN(L, 2),
+		  SUNXI_FUNCTION(0x0, "gpio_in"),
+		  SUNXI_FUNCTION(0x1, "gpio_out"),
+		  SUNXI_FUNCTION(0x2, "s_uart"),	/* TX */
+		  SUNXI_FUNCTION_IRQ_BANK(0x6, 0, 2)),	/* PL_EINT2 */
+	SUNXI_PIN(SUNXI_PINCTRL_PIN(L, 3),
+		  SUNXI_FUNCTION(0x0, "gpio_in"),
+		  SUNXI_FUNCTION(0x1, "gpio_out"),
+		  SUNXI_FUNCTION(0x2, "s_uart"),	/* RX */
+		  SUNXI_FUNCTION_IRQ_BANK(0x6, 0, 3)),	/* PL_EINT3 */
+	SUNXI_PIN(SUNXI_PINCTRL_PIN(L, 4),
+		  SUNXI_FUNCTION(0x0, "gpio_in"),
+		  SUNXI_FUNCTION(0x1, "gpio_out"),
+		  SUNXI_FUNCTION(0x2, "s_jtag"),	/* MS */
+		  SUNXI_FUNCTION_IRQ_BANK(0x6, 0, 4)),	/* PL_EINT4 */
+	SUNXI_PIN(SUNXI_PINCTRL_PIN(L, 5),
+		  SUNXI_FUNCTION(0x0, "gpio_in"),
+		  SUNXI_FUNCTION(0x1, "gpio_out"),
+		  SUNXI_FUNCTION(0x2, "s_jtag"),	/* CK */
+		  SUNXI_FUNCTION_IRQ_BANK(0x6, 0, 5)),	/* PL_EINT5 */
+	SUNXI_PIN(SUNXI_PINCTRL_PIN(L, 6),
+		  SUNXI_FUNCTION(0x0, "gpio_in"),
+		  SUNXI_FUNCTION(0x1, "gpio_out"),
+		  SUNXI_FUNCTION(0x2, "s_jtag"),	/* DO */
+		  SUNXI_FUNCTION_IRQ_BANK(0x6, 0, 6)),	/* PL_EINT6 */
+	SUNXI_PIN(SUNXI_PINCTRL_PIN(L, 7),
+		  SUNXI_FUNCTION(0x0, "gpio_in"),
+		  SUNXI_FUNCTION(0x1, "gpio_out"),
+		  SUNXI_FUNCTION(0x2, "s_jtag"),	/* DI */
+		  SUNXI_FUNCTION_IRQ_BANK(0x6, 0, 7)),	/* PL_EINT7 */
+	SUNXI_PIN(SUNXI_PINCTRL_PIN(L, 8),
+		  SUNXI_FUNCTION(0x0, "gpio_in"),
+		  SUNXI_FUNCTION(0x1, "gpio_out"),
+		  SUNXI_FUNCTION(0x2, "s_pwm"),
+		  SUNXI_FUNCTION_IRQ_BANK(0x6, 0, 8)),	/* PL_EINT8 */
+	SUNXI_PIN(SUNXI_PINCTRL_PIN(L, 9),
+		  SUNXI_FUNCTION(0x0, "gpio_in"),
+		  SUNXI_FUNCTION(0x1, "gpio_out"),
+		  SUNXI_FUNCTION(0x2, "s_cir_rx"),
+		  SUNXI_FUNCTION_IRQ_BANK(0x6, 0, 9)),	/* PL_EINT9 */
+	SUNXI_PIN(SUNXI_PINCTRL_PIN(L, 10),
+		  SUNXI_FUNCTION(0x0, "gpio_in"),
+		  SUNXI_FUNCTION(0x1, "gpio_out"),
+		  SUNXI_FUNCTION(0x2, "s_w1"),
+		  SUNXI_FUNCTION_IRQ_BANK(0x6, 0, 10)),	/* PL_EINT10 */
+	/* Hole */
+	SUNXI_PIN(SUNXI_PINCTRL_PIN(M, 0),
+		  SUNXI_FUNCTION(0x0, "gpio_in"),
+		  SUNXI_FUNCTION(0x1, "gpio_out"),
+		  SUNXI_FUNCTION_IRQ_BANK(0x6, 1, 0)),	/* PM_EINT0 */
+	SUNXI_PIN(SUNXI_PINCTRL_PIN(M, 1),
+		  SUNXI_FUNCTION(0x0, "gpio_in"),
+		  SUNXI_FUNCTION(0x1, "gpio_out"),
+		  SUNXI_FUNCTION_IRQ_BANK(0x6, 1, 1)),	/* PM_EINT1 */
+	SUNXI_PIN(SUNXI_PINCTRL_PIN(M, 2),
+		  SUNXI_FUNCTION(0x0, "gpio_in"),
+		  SUNXI_FUNCTION(0x1, "gpio_out"),
+		  SUNXI_FUNCTION_IRQ_BANK(0x6, 1, 2),	/* PM_EINT2 */
+		  SUNXI_FUNCTION(0x3, "1wire")),
+	SUNXI_PIN(SUNXI_PINCTRL_PIN(M, 3),
+		  SUNXI_FUNCTION(0x0, "gpio_in"),
+		  SUNXI_FUNCTION(0x1, "gpio_out"),
+		  SUNXI_FUNCTION_IRQ_BANK(0x6, 1, 3)),	/* PM_EINT3 */
+	SUNXI_PIN(SUNXI_PINCTRL_PIN(M, 4),
+		  SUNXI_FUNCTION(0x0, "gpio_in"),
+		  SUNXI_FUNCTION(0x1, "gpio_out"),
+		  SUNXI_FUNCTION_IRQ_BANK(0x6, 1, 4)),	/* PM_EINT4 */
+};
+
+static const struct sunxi_pinctrl_desc sun50i_h6_r_pinctrl_data = {
+	.pins = sun50i_h6_r_pins,
+	.npins = ARRAY_SIZE(sun50i_h6_r_pins),
+	.pin_base = PL_BASE,
+	.irq_banks = 2,
+};
+
+static int sun50i_h6_r_pinctrl_probe(struct platform_device *pdev)
+{
+	return sunxi_pinctrl_init(pdev,
+				  &sun50i_h6_r_pinctrl_data);
+}
+
+static const struct of_device_id sun50i_h6_r_pinctrl_match[] = {
+	{ .compatible = "allwinner,sun50i-h6-r-pinctrl", },
+	{}
+};
+
+static struct platform_driver sun50i_h6_r_pinctrl_driver = {
+	.probe	= sun50i_h6_r_pinctrl_probe,
+	.driver	= {
+		.name		= "sun50i-h6-r-pinctrl",
+		.of_match_table	= sun50i_h6_r_pinctrl_match,
+	},
+};
+builtin_platform_driver(sun50i_h6_r_pinctrl_driver);
-- 
2.15.1