linux-kernel - [PATCH v2 02/10] pinctrl: sunxi: add driver for Allwinner V853

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Message-Id: <20250205125225.1152849-3-szemzo.andras@gmail.com>
Date: Wed,  5 Feb 2025 13:52:17 +0100
From: Andras Szemzo <szemzo.andras@...il.com>
To: Michael Turquette <mturquette@...libre.com>,
	Stephen Boyd <sboyd@...nel.org>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Chen-Yu Tsai <wens@...e.org>,
	Jernej Skrabec <jernej.skrabec@...il.com>,
	Samuel Holland <samuel@...lland.org>,
	Linus Walleij <linus.walleij@...aro.org>,
	Philipp Zabel <p.zabel@...gutronix.de>,
	Maxime Ripard <mripard@...nel.org>
Cc: Vinod Koul <vkoul@...nel.org>,
	Kishon Vijay Abraham I <kishon@...nel.org>,
	Ulf Hansson <ulf.hansson@...aro.org>,
	Paul Walmsley <paul.walmsley@...ive.com>,
	Palmer Dabbelt <palmer@...belt.com>,
	Albert Ou <aou@...s.berkeley.edu>,
	Uwe Kleine-König <u.kleine-koenig@...libre.com>,
	Florian Fainelli <florian.fainelli@...adcom.com>,
	linux-clk@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-sunxi@...ts.linux.dev,
	linux-kernel@...r.kernel.org,
	linux-phy@...ts.infradead.org,
	linux-gpio@...r.kernel.org,
	linux-pm@...r.kernel.org,
	linux-riscv@...ts.infradead.org
Subject: [PATCH v2 02/10] pinctrl: sunxi: add driver for Allwinner V853

The V853 family has multiple package variants, from BGA to QFN88.
The latter has co-packaged DRAM and fewer pins, and less features (pin muxes).
All family members can be supported by a single driver, as the available pins
with allowed muxes is the same across the devices.

This new pinctrl driver depends on the new sunxi device-tree based mux support
patch series [1].

[1]: https://lore.kernel.org/linux-sunxi/20241111005750.13071-1-andre.przywara@arm.com/T/

Signed-off-by: Andras Szemzo <szemzo.andras@...il.com>
---
 drivers/pinctrl/sunxi/Kconfig              |  5 ++
 drivers/pinctrl/sunxi/Makefile             |  1 +
 drivers/pinctrl/sunxi/pinctrl-sun8i-v853.c | 53 ++++++++++++++++++++++
 3 files changed, 59 insertions(+)
 create mode 100644 drivers/pinctrl/sunxi/pinctrl-sun8i-v853.c

diff --git a/drivers/pinctrl/sunxi/Kconfig b/drivers/pinctrl/sunxi/Kconfig
index a78fdbbdfc0c..fac9c61039e2 100644
--- a/drivers/pinctrl/sunxi/Kconfig
+++ b/drivers/pinctrl/sunxi/Kconfig
@@ -81,6 +81,11 @@ config PINCTRL_SUN9I_A80_R
 	default MACH_SUN9I
 	select PINCTRL_SUNXI
 
+config PINCTRL_SUN8I_V853
+	bool "Support for the Allwinner V853/V851S/V851SE PIO"
+	default MACH_SUN8I
+	select PINCTRL_SUNXI
+
 config PINCTRL_SUN20I_D1
 	bool "Support for the Allwinner D1 PIO"
 	default MACH_SUN8I || (RISCV && ARCH_SUNXI)
diff --git a/drivers/pinctrl/sunxi/Makefile b/drivers/pinctrl/sunxi/Makefile
index 2ff5a55927ad..8937b56b2ef4 100644
--- a/drivers/pinctrl/sunxi/Makefile
+++ b/drivers/pinctrl/sunxi/Makefile
@@ -20,6 +20,7 @@ obj-$(CONFIG_PINCTRL_SUN8I_A83T_R)	+= pinctrl-sun8i-a83t-r.o
 obj-$(CONFIG_PINCTRL_SUN8I_H3)		+= pinctrl-sun8i-h3.o
 obj-$(CONFIG_PINCTRL_SUN8I_H3_R)	+= pinctrl-sun8i-h3-r.o
 obj-$(CONFIG_PINCTRL_SUN8I_V3S)		+= pinctrl-sun8i-v3s.o
+obj-$(CONFIG_PINCTRL_SUN8I_V853)	+= pinctrl-sun8i-v853.o
 obj-$(CONFIG_PINCTRL_SUN20I_D1)		+= pinctrl-sun20i-d1.o
 obj-$(CONFIG_PINCTRL_SUN50I_H5)		+= pinctrl-sun50i-h5.o
 obj-$(CONFIG_PINCTRL_SUN50I_H6)		+= pinctrl-sun50i-h6.o
diff --git a/drivers/pinctrl/sunxi/pinctrl-sun8i-v853.c b/drivers/pinctrl/sunxi/pinctrl-sun8i-v853.c
new file mode 100644
index 000000000000..fb2112ee12d0
--- /dev/null
+++ b/drivers/pinctrl/sunxi/pinctrl-sun8i-v853.c
@@ -0,0 +1,53 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Allwinner V853 SoC pinctrl driver.
+ *
+ * Copyright (c) 2025 Andras Szemzo <szemzo.andras@...il.com>
+ */
+
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/pinctrl/pinctrl.h>
+
+#include "pinctrl-sunxi.h"
+
+static const u8 v853_nr_bank_pins[SUNXI_PINCTRL_MAX_BANKS] =
+/*	  PA  PB  PC  PD  PE  PF  PG  PH  PI  */
+	{ 22,  0, 12, 23, 18,  7,  8, 16,  5 };
+
+static const unsigned int v853_irq_bank_map[] = { 0, 2, 3, 4, 5, 6, 7, 8 };
+
+static const u8 v853_irq_bank_muxes[SUNXI_PINCTRL_MAX_BANKS] =
+/*	  PA  PB  PC  PD  PE  PF  PG  PH  PI */
+	{ 14,  0, 14, 14, 14, 14, 14, 14, 14 };
+
+static struct sunxi_pinctrl_desc v853_pinctrl_data = {
+	.irq_banks = ARRAY_SIZE(v853_irq_bank_map),
+	.irq_bank_map = v853_irq_bank_map,
+	.io_bias_cfg_variant = BIAS_VOLTAGE_PIO_POW_MODE_SEL,
+};
+
+static int v853_pinctrl_probe(struct platform_device *pdev)
+{
+	return sunxi_pinctrl_dt_table_init(pdev, v853_nr_bank_pins,
+					   v853_irq_bank_muxes,
+					   &v853_pinctrl_data,
+					   SUNXI_PINCTRL_NEW_REG_LAYOUT |
+					   SUNXI_PINCTRL_ELEVEN_BANKS);
+}
+
+static const struct of_device_id v853_pinctrl_match[] = {
+	{ .compatible = "allwinner,sun8i-v853-pinctrl", },
+	{}
+};
+
+static struct platform_driver v853_pinctrl_driver = {
+	.probe	= v853_pinctrl_probe,
+	.driver	= {
+		.name		= "sun8i-v853-pinctrl",
+		.of_match_table	= v853_pinctrl_match,
+	},
+};
+builtin_platform_driver(v853_pinctrl_driver);
-- 
2.39.5