Merge tag 'sunxi-pinctrl-for-3.16' of https://github.com/mripard/linux into devel

Pinctrl cleanup and reworks for 3.16

This serie of patch:
  - Moves the Allwinner pinctrl driver to a folder of its own
  - removes the sunxi-pinctrl-pins header, and split the driver into a core
    one, with all the logic, and smaller drivers, one for each SoC, that
    declare the pins, and will provide to the core the set of pins.
  - And does a few cleanups here and there.

drivers/pinctrl/Kconfig

@@ -291,11 +291,6 @@ config PINCTRL_SIRF
 	select PINMUX
 	select GPIOLIB_IRQCHIP
 
-config PINCTRL_SUNXI
-	bool
-	select PINMUX
-	select GENERIC_PINCONF
-
 config PINCTRL_ST
 	bool
 	depends on OF
@@ -392,6 +387,7 @@ config PINCTRL_S3C64XX
 source "drivers/pinctrl/mvebu/Kconfig"
 source "drivers/pinctrl/sh-pfc/Kconfig"
 source "drivers/pinctrl/spear/Kconfig"
+source "drivers/pinctrl/sunxi/Kconfig"
 source "drivers/pinctrl/vt8500/Kconfig"
 
 config PINCTRL_XWAY

drivers/pinctrl/Makefile

@@ -49,7 +49,6 @@ obj-$(CONFIG_PINCTRL_PALMAS)	+= pinctrl-palmas.o
 obj-$(CONFIG_PINCTRL_ROCKCHIP)	+= pinctrl-rockchip.o
 obj-$(CONFIG_PINCTRL_SINGLE)	+= pinctrl-single.o
 obj-$(CONFIG_PINCTRL_SIRF)	+= sirf/
-obj-$(CONFIG_PINCTRL_SUNXI)	+= pinctrl-sunxi.o
 obj-$(CONFIG_PINCTRL_TEGRA)	+= pinctrl-tegra.o
 obj-$(CONFIG_PINCTRL_TEGRA20)	+= pinctrl-tegra20.o
 obj-$(CONFIG_PINCTRL_TEGRA30)	+= pinctrl-tegra30.o
@@ -75,3 +74,4 @@ obj-$(CONFIG_ARCH_SHMOBILE)	+= sh-pfc/
 obj-$(CONFIG_SUPERH)		+= sh-pfc/
 obj-$(CONFIG_PLAT_SPEAR)	+= spear/
 obj-$(CONFIG_ARCH_VT8500)	+= vt8500/
+obj-$(CONFIG_ARCH_SUNXI)	+= sunxi/

drivers/pinctrl/sunxi/Kconfig

+if ARCH_SUNXI
+
+config PINCTRL_SUNXI
+	bool
+	select PINMUX
+	select GENERIC_PINCONF
+
+config PINCTRL_SUN4I_A10
+       bool
+       select PINCTRL_SUNXI
+
+config PINCTRL_SUN5I_A10S
+       bool
+       select PINCTRL_SUNXI
+
+config PINCTRL_SUN5I_A13
+       bool
+       select PINCTRL_SUNXI
+
+config PINCTRL_SUN6I_A31
+       bool
+       select PINCTRL_SUNXI
+
+config PINCTRL_SUN6I_A31_R
+       bool
+       select PINCTRL_SUNXI
+
+config PINCTRL_SUN7I_A20
+       bool
+       select PINCTRL_SUNXI
+
+endif

drivers/pinctrl/sunxi/Makefile

+# Core
+obj-$(CONFIG_PINCTRL_SUNXI)	+= pinctrl-sunxi.o
+
+# SoC Drivers
+obj-$(CONFIG_PINCTRL_SUN4I_A10)		+= pinctrl-sun4i-a10.o
+obj-$(CONFIG_PINCTRL_SUN5I_A10S)	+= pinctrl-sun5i-a10s.o
+obj-$(CONFIG_PINCTRL_SUN5I_A13)		+= pinctrl-sun5i-a13.o
+obj-$(CONFIG_PINCTRL_SUN6I_A31)		+= pinctrl-sun6i-a31.o
+obj-$(CONFIG_PINCTRL_SUN6I_A31_R)	+= pinctrl-sun6i-a31-r.o
+obj-$(CONFIG_PINCTRL_SUN7I_A20)		+= pinctrl-sun7i-a20.o

drivers/pinctrl/sunxi/pinctrl-sun6i-a31-r.c

+/*
+ * Allwinner A31 SoCs special pins pinctrl driver.
+ *
+ * Copyright (C) 2014 Boris Brezillon
+ * Boris Brezillon <boris.brezillon@free-electrons.com>
+ *
+ * Copyright (C) 2014 Maxime Ripard
+ * Maxime Ripard <maxime.ripard@free-electrons.com>
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2.  This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+
+#include <linux/module.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 sun6i_a31_r_pins[] = {
+	SUNXI_PIN(SUNXI_PINCTRL_PIN(L, 0),
+		  SUNXI_FUNCTION(0x0, "gpio_in"),
+		  SUNXI_FUNCTION(0x1, "gpio_out"),
+		  SUNXI_FUNCTION(0x2, "s_twi"),		/* SCK */
+		  SUNXI_FUNCTION(0x3, "s_p2wi")),	/* SCK */
+	SUNXI_PIN(SUNXI_PINCTRL_PIN(L, 1),
+		  SUNXI_FUNCTION(0x0, "gpio_in"),
+		  SUNXI_FUNCTION(0x1, "gpio_out"),
+		  SUNXI_FUNCTION(0x2, "s_twi"),		/* SDA */
+		  SUNXI_FUNCTION(0x3, "s_p2wi")),	/* SDA */
+	SUNXI_PIN(SUNXI_PINCTRL_PIN(L, 2),
+		  SUNXI_FUNCTION(0x0, "gpio_in"),
+		  SUNXI_FUNCTION(0x1, "gpio_out"),
+		  SUNXI_FUNCTION(0x2, "s_uart")),	/* TX */
+	SUNXI_PIN(SUNXI_PINCTRL_PIN(L, 3),
+		  SUNXI_FUNCTION(0x0, "gpio_in"),
+		  SUNXI_FUNCTION(0x1, "gpio_out"),
+		  SUNXI_FUNCTION(0x2, "s_uart")),	/* RX */
+	SUNXI_PIN(SUNXI_PINCTRL_PIN(L, 4),
+		  SUNXI_FUNCTION(0x0, "gpio_in"),
+		  SUNXI_FUNCTION(0x1, "gpio_out"),
+		  SUNXI_FUNCTION(0x2, "s_ir")),		/* RX */
+	SUNXI_PIN(SUNXI_PINCTRL_PIN(L, 5),
+		  SUNXI_FUNCTION(0x0, "gpio_in"),
+		  SUNXI_FUNCTION(0x1, "gpio_out"),
+		  SUNXI_FUNCTION(0x3, "s_jtag")),	/* MS */
+	SUNXI_PIN(SUNXI_PINCTRL_PIN(L, 6),
+		  SUNXI_FUNCTION(0x0, "gpio_in"),
+		  SUNXI_FUNCTION(0x1, "gpio_out"),
+		  SUNXI_FUNCTION(0x3, "s_jtag")),	/* CK */
+	SUNXI_PIN(SUNXI_PINCTRL_PIN(L, 7),
+		  SUNXI_FUNCTION(0x0, "gpio_in"),
+		  SUNXI_FUNCTION(0x1, "gpio_out"),
+		  SUNXI_FUNCTION(0x3, "s_jtag")),	/* DO */
+	SUNXI_PIN(SUNXI_PINCTRL_PIN(L, 8),
+		  SUNXI_FUNCTION(0x0, "gpio_in"),
+		  SUNXI_FUNCTION(0x1, "gpio_out"),
+		  SUNXI_FUNCTION(0x3, "s_jtag")),	/* DI */
+	/* Hole */
+	SUNXI_PIN(SUNXI_PINCTRL_PIN(M, 0),
+		  SUNXI_FUNCTION(0x0, "gpio_in"),
+		  SUNXI_FUNCTION(0x1, "gpio_out")),
+	SUNXI_PIN(SUNXI_PINCTRL_PIN(M, 1),
+		  SUNXI_FUNCTION(0x0, "gpio_in"),
+		  SUNXI_FUNCTION(0x1, "gpio_out")),
+	SUNXI_PIN(SUNXI_PINCTRL_PIN(M, 2),
+		  SUNXI_FUNCTION(0x0, "gpio_in"),
+		  SUNXI_FUNCTION(0x1, "gpio_out"),
+		  SUNXI_FUNCTION(0x3, "1wire")),
+	SUNXI_PIN(SUNXI_PINCTRL_PIN(M, 3),
+		  SUNXI_FUNCTION(0x0, "gpio_in"),
+		  SUNXI_FUNCTION(0x1, "gpio_out")),
+	SUNXI_PIN(SUNXI_PINCTRL_PIN(M, 4),
+		  SUNXI_FUNCTION(0x0, "gpio_in"),
+		  SUNXI_FUNCTION(0x1, "gpio_out")),
+	SUNXI_PIN(SUNXI_PINCTRL_PIN(M, 5),
+		  SUNXI_FUNCTION(0x0, "gpio_in"),
+		  SUNXI_FUNCTION(0x1, "gpio_out")),
+	SUNXI_PIN(SUNXI_PINCTRL_PIN(M, 6),
+		  SUNXI_FUNCTION(0x0, "gpio_in"),
+		  SUNXI_FUNCTION(0x1, "gpio_out")),
+	SUNXI_PIN(SUNXI_PINCTRL_PIN(M, 7),
+		  SUNXI_FUNCTION(0x0, "gpio_in"),
+		  SUNXI_FUNCTION(0x1, "gpio_out"),
+		  SUNXI_FUNCTION(0x3, "rtc")),		/* CLKO */
+};
+
+static const struct sunxi_pinctrl_desc sun6i_a31_r_pinctrl_data = {
+	.pins = sun6i_a31_r_pins,
+	.npins = ARRAY_SIZE(sun6i_a31_r_pins),
+	.pin_base = PL_BASE,
+};
+
+static int sun6i_a31_r_pinctrl_probe(struct platform_device *pdev)
+{
+	struct reset_control *rstc;
+	int ret;
+
+	rstc = devm_reset_control_get(&pdev->dev, NULL);
+	if (IS_ERR(rstc)) {
+		dev_err(&pdev->dev, "Reset controller missing\n");
+		return PTR_ERR(rstc);
+	}
+
+	ret = reset_control_deassert(rstc);
+	if (ret)
+		return ret;
+
+	ret = sunxi_pinctrl_init(pdev,
+				 &sun6i_a31_r_pinctrl_data);
+
+	if (ret)
+		reset_control_assert(rstc);
+
+	return ret;
+}
+
+static struct of_device_id sun6i_a31_r_pinctrl_match[] = {
+	{ .compatible = "allwinner,sun6i-a31-r-pinctrl", },
+	{}
+};
+MODULE_DEVICE_TABLE(of, sun6i_a31_r_pinctrl_match);
+
+static struct platform_driver sun6i_a31_r_pinctrl_driver = {
+	.probe	= sun6i_a31_r_pinctrl_probe,
+	.driver	= {
+		.name		= "sun6i-a31-r-pinctrl",
+		.owner		= THIS_MODULE,
+		.of_match_table	= sun6i_a31_r_pinctrl_match,
+	},
+};
+module_platform_driver(sun6i_a31_r_pinctrl_driver);
+
+MODULE_AUTHOR("Boris Brezillon <boris.brezillon@free-electrons.com");
+MODULE_AUTHOR("Maxime Ripard <maxime.ripard@free-electrons.com");
+MODULE_DESCRIPTION("Allwinner A31 R_PIO pinctrl driver");
+MODULE_LICENSE("GPL");