linux-kernel - Re: [PATCH 3/8] pinctrl: sunxi: Add support for the Allwinner H616-R pin controller

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Date:   Wed, 02 Dec 2020 18:55:32 +0100
From:   Jernej Škrabec <jernej.skrabec@...l.net>
To:     Maxime Ripard <mripard@...nel.org>, Chen-Yu Tsai <wens@...e.org>,
        Andre Przywara <andre.przywara@....com>
Cc:     Icenowy Zheng <icenowy@...c.xyz>,
        linux-arm-kernel@...ts.infradead.org, linux-sunxi@...glegroups.com,
        Linus Walleij <linus.walleij@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Yangtao Li <frank@...winnertech.com>,
        linux-kernel@...r.kernel.org, linux-gpio@...r.kernel.org,
        Andre Przywara <andre.przywara@....com>
Subject: Re: [PATCH 3/8] pinctrl: sunxi: Add support for the Allwinner H616-R pin controller

Dne sreda, 02. december 2020 ob 14:54:04 CET je Andre Przywara napisal(a):
> There are only two pins left now, used to connect to the PMIC via I2C.
> 
> Signed-off-by: Andre Przywara <andre.przywara@....com>
> ---
>  drivers/pinctrl/sunxi/Kconfig                 |  5 ++
>  drivers/pinctrl/sunxi/Makefile                |  1 +
>  drivers/pinctrl/sunxi/pinctrl-sun50i-h616-r.c | 58 +++++++++++++++++++
>  3 files changed, 64 insertions(+)
>  create mode 100644 drivers/pinctrl/sunxi/pinctrl-sun50i-h616-r.c
> 
> diff --git a/drivers/pinctrl/sunxi/Kconfig b/drivers/pinctrl/sunxi/Kconfig
> index 73e88ce71a48..33751a6a0757 100644
> --- a/drivers/pinctrl/sunxi/Kconfig
> +++ b/drivers/pinctrl/sunxi/Kconfig
> @@ -124,4 +124,9 @@ config PINCTRL_SUN50I_H616
>  	default ARM64 && ARCH_SUNXI
>  	select PINCTRL_SUNXI
>  
> +config PINCTRL_SUN50I_H616_R
> +	bool "Support for the Allwinner H616 R-PIO"
> +	default ARM64 && ARCH_SUNXI
> +	select PINCTRL_SUNXI
> +
>  endif
> diff --git a/drivers/pinctrl/sunxi/Makefile b/drivers/pinctrl/sunxi/Makefile
> index 5359327a3c8f..d3440c42b9d6 100644
> --- a/drivers/pinctrl/sunxi/Makefile
> +++ b/drivers/pinctrl/sunxi/Makefile
> @@ -24,5 +24,6 @@ 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_SUN50I_H616)	+= pinctrl-sun50i-h616.o
> +obj-$(CONFIG_PINCTRL_SUN50I_H616_R)	+= pinctrl-sun50i-h616-r.o
>  obj-$(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-h616-r.c b/drivers/pinctrl/
sunxi/pinctrl-sun50i-h616-r.c
> new file mode 100644
> index 000000000000..eb76c009bf24
> --- /dev/null
> +++ b/drivers/pinctrl/sunxi/pinctrl-sun50i-h616-r.c
> @@ -0,0 +1,58 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * Allwinner H616 R_PIO pin controller driver
> + *
> + * Copyright (C) 2020 Arm Ltd.
> + * Based on former work, which is:
> + *   Copyright (C) 2017 Icenowy Zheng <icenowy@...c.io>
> + *   Copyright (C) 2014 Boris Brezillon
> + *   Boris Brezillon <boris.brezillon@...e-electrons.com>
> + *   Copyright (C) 2014 Maxime Ripard
> + *   Maxime Ripard <maxime.ripard@...e-electrons.com>
> + */

I'm not sure if it makes sense to reference so many previous work for so 
simple driver...

Anyway:

Reviewed-by: Jernej Skrabec <jernej.skrabec@...l.net>

Best regards,
Jernej

> +
> +#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_h616_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_PIN(SUNXI_PINCTRL_PIN(L, 1),
> +		  SUNXI_FUNCTION(0x0, "gpio_in"),
> +		  SUNXI_FUNCTION(0x1, "gpio_out"),
> +		  SUNXI_FUNCTION(0x3, "s_i2c")),	/* SDA */
> +};
> +
> +static const struct sunxi_pinctrl_desc sun50i_h616_r_pinctrl_data = {
> +	.pins = sun50i_h616_r_pins,
> +	.npins = ARRAY_SIZE(sun50i_h616_r_pins),
> +	.pin_base = PL_BASE,
> +};
> +
> +static int sun50i_h616_r_pinctrl_probe(struct platform_device *pdev)
> +{
> +	return sunxi_pinctrl_init(pdev,
> +				  &sun50i_h616_r_pinctrl_data);
> +}
> +
> +static const struct of_device_id sun50i_h616_r_pinctrl_match[] = {
> +	{ .compatible = "allwinner,sun50i-h616-r-pinctrl", },
> +	{}
> +};
> +
> +static struct platform_driver sun50i_h616_r_pinctrl_driver = {
> +	.probe	= sun50i_h616_r_pinctrl_probe,
> +	.driver	= {
> +		.name		= "sun50i-h616-r-pinctrl",
> +		.of_match_table	= sun50i_h616_r_pinctrl_match,
> +	},
> +};
> +builtin_platform_driver(sun50i_h616_r_pinctrl_driver);
> -- 
> 2.17.5
> 
>