pinctrl: sunxi: Add support for the Allwinner H616-R pin controller

There are only two pins left now, used to connect to the PMIC via I2C.

Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Acked-by: Maxime Ripard <mripard@kernel.org>
Reviewed-by: Jernej Skrabec <jernej.skrabec@siol.net>
Link: https://lore.kernel.org/r/20210118020848.11721-6-andre.przywara@arm.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

diff --git a/drivers/pinctrl/sunxi/Kconfig b/drivers/pinctrl/sunxi/Kconfig
index 73e88ce71a4895e5baa01f269c196a83d4b0d034..33751a6a075728f24c4c618008fa49bbfae62965 100644 (file)
--- 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 5359327a3c8fae2fd7b706fda47e3a78b5729bbc..d3440c42b9d62643a523d6cdfea2c4f7a6eebdec 100644 (file)
--- 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 (file)
index 0000000..8e4f10a
--- /dev/null
+++ b/drivers/pinctrl/sunxi/pinctrl-sun50i-h616-r.c
@@ -0,0 +1,56 @@
+// 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@aosc.io>
+ */
+
+#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(0x2, "s_rsb"),         /* SCK */
+                 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(0x2, "s_rsb"),         /* SDA */
+                 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);