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Date: Mon, 15 Aug 2016 21:55:39 +0800
From: Chen-Yu Tsai <wens@...e.org>
To: Icenowy Zheng <icenowy@...c.xyz>
Cc: Rob Herring <robh+dt@...nel.org>,
Maxime Ripard <maxime.ripard@...e-electrons.com>,
Chen-Yu Tsai <wens@...e.org>,
Andre Przywara <andre.przywara@....com>,
Linus Walleij <linus.walleij@...aro.org>,
Jens Kuske <jenskuske@...il.com>,
Mark Rutland <mark.rutland@....com>,
Vishnu Patekar <vishnupatekar0510@...il.com>,
Krzysztof Adamski <k@...ko.eu>,
Masahiro Yamada <yamada.masahiro@...ionext.com>,
"linux-gpio@...r.kernel.org" <linux-gpio@...r.kernel.org>,
devicetree <devicetree@...r.kernel.org>,
linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 2/2] pinctrl: sunxi: Add A64 R_PIO controller support
Hi,
On Mon, Aug 1, 2016 at 10:59 PM, Icenowy Zheng <icenowy@...c.xyz> wrote:
> The A64 has a R_PIO pin controller, similar to the one found on the H3 SoCs.
> Add support for the pins controlled by the R_PIO controller.
>
> Signed-off-by: Icenowy Zheng <icenowy@...c.xyz>
> ---
> drivers/pinctrl/sunxi/Kconfig | 5 +
> drivers/pinctrl/sunxi/Makefile | 1 +
> drivers/pinctrl/sunxi/pinctrl-sun50i-a64-r.c | 148 +++++++++++++++++++++++++++
> 3 files changed, 154 insertions(+)
> create mode 100644 drivers/pinctrl/sunxi/pinctrl-sun50i-a64-r.c
>
> diff --git a/drivers/pinctrl/sunxi/Kconfig b/drivers/pinctrl/sunxi/Kconfig
> index aaf075b..c4b476f 100644
> --- a/drivers/pinctrl/sunxi/Kconfig
> +++ b/drivers/pinctrl/sunxi/Kconfig
> @@ -72,4 +72,9 @@ config PINCTRL_SUN50I_A64
> bool
> select PINCTRL_SUNXI
>
> +config PINCTRL_SUN50I_A64_R
> + bool
> + depends on RESET_CONTROLLER
> + select PINCTRL_SUNXI
> +
> endif
> diff --git a/drivers/pinctrl/sunxi/Makefile b/drivers/pinctrl/sunxi/Makefile
> index 2d8b64e..d6eabdd 100644
> --- a/drivers/pinctrl/sunxi/Makefile
> +++ b/drivers/pinctrl/sunxi/Makefile
> @@ -13,6 +13,7 @@ obj-$(CONFIG_PINCTRL_SUN8I_A23) += pinctrl-sun8i-a23.o
> obj-$(CONFIG_PINCTRL_SUN8I_A23_R) += pinctrl-sun8i-a23-r.o
> obj-$(CONFIG_PINCTRL_SUN8I_A33) += pinctrl-sun8i-a33.o
> obj-$(CONFIG_PINCTRL_SUN50I_A64) += pinctrl-sun50i-a64.o
> +obj-$(CONFIG_PINCTRL_SUN50I_A64_R) += pinctrl-sun50i-a64-r.o
> obj-$(CONFIG_PINCTRL_SUN8I_A83T) += pinctrl-sun8i-a83t.o
> obj-$(CONFIG_PINCTRL_SUN8I_H3) += pinctrl-sun8i-h3.o
> obj-$(CONFIG_PINCTRL_SUN8I_H3_R) += pinctrl-sun8i-h3-r.o
> diff --git a/drivers/pinctrl/sunxi/pinctrl-sun50i-a64-r.c b/drivers/pinctrl/sunxi/pinctrl-sun50i-a64-r.c
> new file mode 100644
> index 0000000..b836264
> --- /dev/null
> +++ b/drivers/pinctrl/sunxi/pinctrl-sun50i-a64-r.c
> @@ -0,0 +1,148 @@
> +/*
> + * Allwinner A64 SoCs special pins pinctrl driver.
> + *
> + * Based on pinctrl-sun8i-a23-r.c
> + *
> + * Copyright (C) 2016 Icenowy Zheng
> + * Icenowy Zheng <icenowy@...c.xyz>
> + *
> + * Copyright (C) 2014 Chen-Yu Tsai
> + * Chen-Yu Tsai <wens@...e.org>
> + *
> + * Copyright (C) 2014 Boris Brezillon
> + * Boris Brezillon <boris.brezillon@...e-electrons.com>
> + *
> + * Copyright (C) 2014 Maxime Ripard
> + * Maxime Ripard <maxime.ripard@...e-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>
Please sort the headers.
> +#include <linux/pinctrl/pinctrl.h>
> +#include <linux/reset.h>
> +
> +#include "pinctrl-sunxi.h"
> +
> +static const struct sunxi_desc_pin sun50i_a64_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 */
We use "i2c" instead of "twi".
> + 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(0x2, "s_rsb"), /* SDA */
> + SUNXI_FUNCTION(0x3, "s_twi"), /* SDA */
Same here.
> + 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(0x3, "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(0x3, "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(0x3, "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(0x3, "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_twi"), /* SCK */
Ditto.
> + 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_twi"), /* SDA */
Ditto.
> + 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_pwm"),
> + SUNXI_FUNCTION_IRQ_BANK(0x6, 0, 10)), /* PL_EINT10 */
> + SUNXI_PIN(SUNXI_PINCTRL_PIN(L, 11),
> + SUNXI_FUNCTION(0x0, "gpio_in"),
> + SUNXI_FUNCTION(0x1, "gpio_out"),
> + SUNXI_FUNCTION(0x2, "s_cir_rx"),
> + SUNXI_FUNCTION_IRQ_BANK(0x6, 0, 11)), /* PL_EINT11 */
You missed PL12.
> +};
> +
> +static const struct sunxi_pinctrl_desc sun50i_a64_r_pinctrl_data = {
> + .pins = sun50i_a64_r_pins,
> + .npins = ARRAY_SIZE(sun50i_a64_r_pins),
> + .pin_base = PL_BASE,
> + .irq_banks = 1,
> +};
> +
> +static int sun50i_a64_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,
> + &sun50i_a64_r_pinctrl_data);
> +
> + if (ret)
> + reset_control_assert(rstc);
> +
> + return ret;
> +}
> +
> +static const struct of_device_id sun50i_a64_r_pinctrl_match[] = {
> + { .compatible = "allwinner,sun50i-a64-r-pinctrl", },
> + {}
> +};
> +MODULE_DEVICE_TABLE(of, sun50i_a64_r_pinctrl_match);
> +
> +static struct platform_driver sun50i_a64_r_pinctrl_driver = {
> + .probe = sun50i_a64_r_pinctrl_probe,
> + .driver = {
> + .name = "sun50i-a64-r-pinctrl",
> + .of_match_table = sun50i_a64_r_pinctrl_match,
> + },
> +};
> +module_platform_driver(sun50i_a64_r_pinctrl_driver);
> +
> +MODULE_AUTHOR("Icenowy Zheng <icenowy@...c.xyz>");
> +MODULE_AUTHOR("Chen-Yu Tsai <wens@...e.org>");
> +MODULE_AUTHOR("Boris Brezillon <boris.brezillon@...e-electrons.com");
> +MODULE_AUTHOR("Maxime Ripard <maxime.ripard@...e-electrons.com");
> +MODULE_DESCRIPTION("Allwinner A64 R_PIO pinctrl driver");
> +MODULE_LICENSE("GPL");
Since you have a bool Kconfig symbol, you can drop all the module related
stuff. Just use builtin_platform_driver like the A64 main pinctrl driver
does.
Regards
ChenYu
> --
> 2.9.0
>
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