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Commit d22bf40f authored by Chen-Yu Tsai's avatar Chen-Yu Tsai Committed by Linus Walleij
Browse files

pinctrl: sunxi: Add A23 R_PIO controller support 



The A23 has a R_PIO pin controller, similar to the one found on the A31 SoC.
Add support for the pins controlled by the R_PIO controller.

Signed-off-by: default avatarChen-Yu Tsai <wens@csie.org>
Acked-by: default avatarMaxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
parent 4c821d1c

Documentation/devicetree/bindings/pinctrl/allwinner,sunxi-pinctrl.txt

+1 −0
Original line number Diff line number Diff line
@@ -14,6 +14,7 @@ Required properties: 
  "allwinner,sun6i-a31-r-pinctrl"

  "allwinner,sun7i-a20-pinctrl"

  "allwinner,sun8i-a23-pinctrl"

  "allwinner,sun8i-a23-r-pinctrl"

- reg: Should contain the register physical address and length for the

  pin controller.

drivers/pinctrl/sunxi/Kconfig

+5 −0
Original line number Diff line number Diff line
@@ -34,4 +34,9 @@ config PINCTRL_SUN8I_A23 
	def_bool MACH_SUN8I

	select PINCTRL_SUNXI_COMMON



config PINCTRL_SUN8I_A23_R

	def_bool MACH_SUN8I

	depends on RESET_CONTROLLER

	select PINCTRL_SUNXI_COMMON



endif

drivers/pinctrl/sunxi/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -9,3 +9,4 @@ 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

obj-$(CONFIG_PINCTRL_SUN8I_A23)		+= pinctrl-sun8i-a23.o

obj-$(CONFIG_PINCTRL_SUN8I_A23_R)	+= pinctrl-sun8i-a23-r.o

drivers/pinctrl/sunxi/pinctrl-sun8i-a23-r.c

0 → 100644
+142 −0
Original line number Diff line number Diff line 
/*

 * Allwinner A23 SoCs special pins pinctrl driver.

 *

 * Copyright (C) 2014 Chen-Yu Tsai

 * Chen-Yu Tsai <wens@csie.org>

 *

 * 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 sun8i_a23_r_pins[] = {

	SUNXI_PIN(SUNXI_PINCTRL_PIN(L, 0),

		  SUNXI_FUNCTION(0x0, "gpio_in"),

		  SUNXI_FUNCTION(0x1, "gpio_out"),

		  SUNXI_FUNCTION(0x2, "s_rsb"),		/* SCK */

		  SUNXI_FUNCTION(0x3, "s_twi"),		/* SCK */

		  SUNXI_FUNCTION_IRQ_BANK(0x4, 0, 0)),	/* PL_EINT0 */

	SUNXI_PIN(SUNXI_PINCTRL_PIN(L, 1),

		  SUNXI_FUNCTION(0x0, "gpio_in"),

		  SUNXI_FUNCTION(0x1, "gpio_out"),

		  SUNXI_FUNCTION(0x2, "s_rsb"),		/* SDA */

		  SUNXI_FUNCTION(0x3, "s_twi"),		/* SDA */

		  SUNXI_FUNCTION_IRQ_BANK(0x4, 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(0x4, 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(0x4, 0, 3)),	/* PL_EINT3 */

	SUNXI_PIN(SUNXI_PINCTRL_PIN(L, 4),

		  SUNXI_FUNCTION(0x0, "gpio_in"),

		  SUNXI_FUNCTION(0x1, "gpio_out"),

		  SUNXI_FUNCTION(0x3, "s_jtag"),	/* MS */

		  SUNXI_FUNCTION_IRQ_BANK(0x4, 0, 4)),	/* PL_EINT4 */

	SUNXI_PIN(SUNXI_PINCTRL_PIN(L, 5),

		  SUNXI_FUNCTION(0x0, "gpio_in"),

		  SUNXI_FUNCTION(0x1, "gpio_out"),

		  SUNXI_FUNCTION(0x3, "s_jtag"),	/* CK */

		  SUNXI_FUNCTION_IRQ_BANK(0x4, 0, 5)),	/* PL_EINT5 */

	SUNXI_PIN(SUNXI_PINCTRL_PIN(L, 6),

		  SUNXI_FUNCTION(0x0, "gpio_in"),

		  SUNXI_FUNCTION(0x1, "gpio_out"),

		  SUNXI_FUNCTION(0x3, "s_jtag"),	/* DO */

		  SUNXI_FUNCTION_IRQ_BANK(0x4, 0, 6)),	/* PL_EINT6 */

	SUNXI_PIN(SUNXI_PINCTRL_PIN(L, 7),

		  SUNXI_FUNCTION(0x0, "gpio_in"),

		  SUNXI_FUNCTION(0x1, "gpio_out"),

		  SUNXI_FUNCTION(0x3, "s_jtag"),	/* DI */

		  SUNXI_FUNCTION_IRQ_BANK(0x4, 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_twi"),		/* SCK */

		  SUNXI_FUNCTION_IRQ_BANK(0x4, 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_twi"),		/* SDA */

		  SUNXI_FUNCTION_IRQ_BANK(0x4, 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_pwm"),

		  SUNXI_FUNCTION_IRQ_BANK(0x4, 0, 10)),	/* PL_EINT10 */

	SUNXI_PIN(SUNXI_PINCTRL_PIN(L, 11),

		  SUNXI_FUNCTION(0x0, "gpio_in"),

		  SUNXI_FUNCTION(0x1, "gpio_out"),

		  SUNXI_FUNCTION_IRQ_BANK(0x4, 0, 11)),	/* PL_EINT11 */

};



static const struct sunxi_pinctrl_desc sun8i_a23_r_pinctrl_data = {

	.pins = sun8i_a23_r_pins,

	.npins = ARRAY_SIZE(sun8i_a23_r_pins),

	.pin_base = PL_BASE,

	.irq_banks = 1,

};



static int sun8i_a23_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,

				 &sun8i_a23_r_pinctrl_data);



	if (ret)

		reset_control_assert(rstc);



	return ret;

}



static struct of_device_id sun8i_a23_r_pinctrl_match[] = {

	{ .compatible = "allwinner,sun8i-a23-r-pinctrl", },

	{}

};

MODULE_DEVICE_TABLE(of, sun8i_a23_r_pinctrl_match);



static struct platform_driver sun8i_a23_r_pinctrl_driver = {

	.probe	= sun8i_a23_r_pinctrl_probe,

	.driver	= {

		.name		= "sun8i-a23-r-pinctrl",

		.owner		= THIS_MODULE,

		.of_match_table	= sun8i_a23_r_pinctrl_match,

	},

};

module_platform_driver(sun8i_a23_r_pinctrl_driver);



MODULE_AUTHOR("Chen-Yu Tsai <wens@csie.org>");

MODULE_AUTHOR("Boris Brezillon <boris.brezillon@free-electrons.com");

MODULE_AUTHOR("Maxime Ripard <maxime.ripard@free-electrons.com");

MODULE_DESCRIPTION("Allwinner A23 R_PIO pinctrl driver");

MODULE_LICENSE("GPL");