[PATCH v3 5/5] pinctrl: starfive: Add StarFive JH7110 aon controller driver

Hal Feng
2022-12-20T00:55:40Z

From: Jianlong Huang <jianlong.huang@starfivetech.com>

Add pinctrl driver for StarFive JH7110 SoC aon pinctrl controller.

Co-developed-by: Emil Renner Berthing <kernel@esmil.dk>
Signed-off-by: Emil Renner Berthing <kernel@esmil.dk>
Signed-off-by: Jianlong Huang <jianlong.huang@starfivetech.com>
Signed-off-by: Hal Feng <hal.feng@starfivetech.com>
---
drivers/pinctrl/starfive/Kconfig | 12 ++
drivers/pinctrl/starfive/Makefile | 1 +
.../starfive/pinctrl-starfive-jh7110-aon.c | 177 ++++++++++++++++++
3 files changed, 190 insertions(+)
create mode 100644 drivers/pinctrl/starfive/pinctrl-starfive-jh7110-aon.c

diff --git a/drivers/pinctrl/starfive/Kconfig b/drivers/pinctrl/starfive/Kconfig
index 453c8a0b3118..8192ac2087fc 100644
--- a/drivers/pinctrl/starfive/Kconfig
+++ b/drivers/pinctrl/starfive/Kconfig
@@ -37,3 +37,15 @@ config PINCTRL_STARFIVE_JH7110_SYS
This also provides an interface to the GPIO pins not used by other
peripherals supporting inputs, outputs, configuring pull-up/pull-down
and interrupts on input changes.
+
+config PINCTRL_STARFIVE_JH7110_AON
+ tristate "Always-on pinctrl and GPIO driver for the StarFive JH7110 SoC"
+ depends on SOC_STARFIVE || COMPILE_TEST
+ depends on OF
+ select PINCTRL_STARFIVE_JH7110
+ default SOC_STARFIVE
+ help
+ Say yes here to support always-on pin control on the StarFive JH7110 SoC.
+ This also provides an interface to the GPIO pins not used by other
+ peripherals supporting inputs, outputs, configuring pull-up/pull-down
+ and interrupts on input changes.
diff --git a/drivers/pinctrl/starfive/Makefile b/drivers/pinctrl/starfive/Makefile
index dc2d1e392314..ee0d32d085cb 100644
--- a/drivers/pinctrl/starfive/Makefile
+++ b/drivers/pinctrl/starfive/Makefile
@@ -4,3 +4,4 @@ obj-$(CONFIG_PINCTRL_STARFIVE_JH7100) += pinctrl-starfive-jh7100.o

obj-$(CONFIG_PINCTRL_STARFIVE_JH7110) += pinctrl-starfive-jh7110.o
obj-$(CONFIG_PINCTRL_STARFIVE_JH7110_SYS) += pinctrl-starfive-jh7110-sys.o
+obj-$(CONFIG_PINCTRL_STARFIVE_JH7110_AON) += pinctrl-starfive-jh7110-aon.o
diff --git a/drivers/pinctrl/starfive/pinctrl-starfive-jh7110-aon.c b/drivers/pinctrl/starfive/pinctrl-starfive-jh7110-aon.c
new file mode 100644
index 000000000000..8cf28aaed254
--- /dev/null
+++ b/drivers/pinctrl/starfive/pinctrl-starfive-jh7110-aon.c
@@ -0,0 +1,177 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Pinctrl / GPIO driver for StarFive JH7110 SoC aon controller
+ *
+ * Copyright (C) 2022 StarFive Technology Co., Ltd.
+ */
+
+#include <linux/err.h>
+#include <linux/gpio/driver.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/of_irq.h>
+#include <linux/of_platform.h>
+#include <linux/pinctrl/pinconf.h>
+#include <linux/pinctrl/pinconf-generic.h>
+#include <linux/pinctrl/pinctrl.h>
+#include <linux/pinctrl/pinmux.h>
+#include <linux/platform_device.h>
+#include <linux/pm_runtime.h>
+#include <linux/regmap.h>
+#include <linux/slab.h>
+
+#include <dt-bindings/pinctrl/starfive,jh7110-pinctrl.h>
+
+#include "../core.h"
+#include "../pinconf.h"
+#include "../pinmux.h"
+#include "pinctrl-starfive-jh7110.h"
+
+#define JH7110_AON_NGPIO 4
+#define JH7110_AON_GC_BASE 64
+
+/* registers */
+#define JH7110_AON_DOEN 0x0
+#define JH7110_AON_DOUT 0x4
+#define JH7110_AON_GPI 0x8
+#define JH7110_AON_GPIOIN 0x2c
+
+#define JH7110_AON_GPIOEN 0xc
+#define JH7110_AON_GPIOIS 0x10
+#define JH7110_AON_GPIOIC 0x14
+#define JH7110_AON_GPIOIBE 0x18
+#define JH7110_AON_GPIOIEV 0x1c
+#define JH7110_AON_GPIOIE 0x20
+#define JH7110_AON_GPIORIS 0x28
+#define JH7110_AON_GPIOMIS 0x28
+
+#define JH7110_AON_GPO_PDA_0_5_CFG 0x30
+
+static const struct pinctrl_pin_desc jh7110_aon_pins[] = {
+ PINCTRL_PIN(PAD_TESTEN, "TESTEN"),
+ PINCTRL_PIN(PAD_RGPIO0, "RGPIO0"),
+ PINCTRL_PIN(PAD_RGPIO1, "RGPIO1"),
+ PINCTRL_PIN(PAD_RGPIO2, "RGPIO2"),
+ PINCTRL_PIN(PAD_RGPIO3, "RGPIO3"),
+ PINCTRL_PIN(PAD_RSTN, "RSTN"),
+ PINCTRL_PIN(PAD_GMAC0_MDC, "GMAC0_MDC"),
+ PINCTRL_PIN(PAD_GMAC0_MDIO, "GMAC0_MDIO"),
+ PINCTRL_PIN(PAD_GMAC0_RXD0, "GMAC0_RXD0"),
+ PINCTRL_PIN(PAD_GMAC0_RXD1, "GMAC0_RXD1"),
+ PINCTRL_PIN(PAD_GMAC0_RXD2, "GMAC0_RXD2"),
+ PINCTRL_PIN(PAD_GMAC0_RXD3, "GMAC0_RXD3"),
+ PINCTRL_PIN(PAD_GMAC0_RXDV, "GMAC0_RXDV"),
+ PINCTRL_PIN(PAD_GMAC0_RXC, "GMAC0_RXC"),
+ PINCTRL_PIN(PAD_GMAC0_TXD0, "GMAC0_TXD0"),
+ PINCTRL_PIN(PAD_GMAC0_TXD1, "GMAC0_TXD1"),
+ PINCTRL_PIN(PAD_GMAC0_TXD2, "GMAC0_TXD2"),
+ PINCTRL_PIN(PAD_GMAC0_TXD3, "GMAC0_TXD3"),
+ PINCTRL_PIN(PAD_GMAC0_TXEN, "GMAC0_TXEN"),
+ PINCTRL_PIN(PAD_GMAC0_TXC, "GMAC0_TXC"),
+};
+
+static int jh7110_aon_set_one_pin_mux(struct jh7110_pinctrl *sfp,
+ unsigned int pin,
+ unsigned int din, u32 dout,
+ u32 doen, u32 func)
+{
+ if (pin < sfp->gc.ngpio && func == 0)
+ jh7110_set_gpiomux(sfp, pin, din, dout, doen);
+
+ return 0;
+}
+
+static int jh7110_aon_get_padcfg_base(struct jh7110_pinctrl *sfp,
+ unsigned int pin)
+{
+ if (pin < PAD_GMAC0_MDC)
+ return JH7110_AON_GPO_PDA_0_5_CFG;
+
+ return -1;
+}
+
+static void jh7110_aon_irq_handler(struct irq_desc *desc)
+{
+ struct jh7110_pinctrl *sfp = jh7110_from_irq_desc(desc);
+ struct irq_chip *chip = irq_desc_get_chip(desc);
+ unsigned long mis;
+ unsigned int pin;
+
+ chained_irq_enter(chip, desc);
+
+ mis = readl_relaxed(sfp->base + JH7110_AON_GPIOMIS);
+ for_each_set_bit(pin, &mis, JH7110_AON_NGPIO)
+ generic_handle_domain_irq(sfp->gc.irq.domain, pin);
+
+ chained_irq_exit(chip, desc);
+}
+
+static int jh7110_aon_init_hw(struct gpio_chip *gc)
+{
+ struct jh7110_pinctrl *sfp = container_of(gc,
+ struct jh7110_pinctrl, gc);
+
+ /* mask all GPIO interrupts */
+ writel_relaxed(0, sfp->base + JH7110_AON_GPIOIE);
+ /* clear edge interrupt flags */
+ writel_relaxed(0, sfp->base + JH7110_AON_GPIOIC);
+ writel_relaxed(0x0f, sfp->base + JH7110_AON_GPIOIC);
+ /* enable GPIO interrupts */
+ writel_relaxed(1, sfp->base + JH7110_AON_GPIOEN);
+ return 0;
+}
+
+static const struct jh7110_gpio_irq_reg jh7110_aon_irq_reg = {
+ .is_reg_base = JH7110_AON_GPIOIS,
+ .ic_reg_base = JH7110_AON_GPIOIC,
+ .ibe_reg_base = JH7110_AON_GPIOIBE,
+ .iev_reg_base = JH7110_AON_GPIOIEV,
+ .ie_reg_base = JH7110_AON_GPIOIE,
+ .ris_reg_base = JH7110_AON_GPIORIS,
+ .mis_reg_base = JH7110_AON_GPIOMIS,
+};
+
+static const struct jh7110_pinctrl_soc_info jh7110_aon_pinctrl_info = {
+ .pins = jh7110_aon_pins,
+ .npins = ARRAY_SIZE(jh7110_aon_pins),
+ .ngpios = JH7110_AON_NGPIO,
+ .gc_base = JH7110_AON_GC_BASE,
+ .dout_reg_base = JH7110_AON_DOUT,
+ .dout_mask = GENMASK(3, 0),
+ .doen_reg_base = JH7110_AON_DOEN,
+ .doen_mask = GENMASK(2, 0),
+ .gpi_reg_base = JH7110_AON_GPI,
+ .gpi_mask = GENMASK(3, 0),
+ .gpioin_reg_base = JH7110_AON_GPIOIN,
+ .irq_reg = &jh7110_aon_irq_reg,
+ .jh7110_set_one_pin_mux = jh7110_aon_set_one_pin_mux,
+ .jh7110_get_padcfg_base = jh7110_aon_get_padcfg_base,
+ .jh7110_gpio_irq_handler = jh7110_aon_irq_handler,
+ .jh7110_gpio_init_hw = jh7110_aon_init_hw,
+};
+
+static const struct of_device_id jh7110_aon_pinctrl_of_match[] = {
+ {
+ .compatible = "starfive,jh7110-aon-pinctrl",
+ .data = &jh7110_aon_pinctrl_info,
+ },
+ { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, jh7110_aon_pinctrl_of_match);
+
+static struct platform_driver jh7110_aon_pinctrl_driver = {
+ .probe = jh7110_pinctrl_probe,
+ .driver = {
+ .name = "starfive-jh7110-aon-pinctrl",
+ .of_match_table = jh7110_aon_pinctrl_of_match,
+ },
+};
+module_platform_driver(jh7110_aon_pinctrl_driver);
+
+MODULE_DESCRIPTION("Pinctrl driver for the StarFive JH7110 SoC aon controller");
+MODULE_AUTHOR("Jianlong Huang <jianlong.huang@starfivetech.com>");
+MODULE_LICENSE("GPL");
--
2.38.1