1 // SPDX-License-Identifier: GPL-2.0
3 * Pinctrl / GPIO driver for StarFive JH7110 SoC aon controller
5 * Copyright (C) 2022 StarFive Technology Co., Ltd.
9 #include <linux/gpio/driver.h>
10 #include <linux/init.h>
11 #include <linux/interrupt.h>
13 #include <linux/mod_devicetable.h>
14 #include <linux/module.h>
15 #include <linux/pinctrl/pinconf.h>
16 #include <linux/pinctrl/pinconf-generic.h>
17 #include <linux/pinctrl/pinctrl.h>
18 #include <linux/pinctrl/pinmux.h>
19 #include <linux/platform_device.h>
20 #include <linux/pm_runtime.h>
21 #include <linux/regmap.h>
22 #include <linux/slab.h>
24 #include <dt-bindings/pinctrl/starfive,jh7110-pinctrl.h>
27 #include "../pinconf.h"
28 #include "../pinmux.h"
29 #include "pinctrl-starfive-jh7110.h"
31 #define JH7110_AON_NGPIO 4
32 #define JH7110_AON_GC_BASE 64
35 #define JH7110_AON_DOEN 0x0
36 #define JH7110_AON_DOUT 0x4
37 #define JH7110_AON_GPI 0x8
38 #define JH7110_AON_GPIOIN 0x2c
40 #define JH7110_AON_GPIOEN 0xc
41 #define JH7110_AON_GPIOIS 0x10
42 #define JH7110_AON_GPIOIC 0x14
43 #define JH7110_AON_GPIOIBE 0x18
44 #define JH7110_AON_GPIOIEV 0x1c
45 #define JH7110_AON_GPIOIE 0x20
46 #define JH7110_AON_GPIORIS 0x28
47 #define JH7110_AON_GPIOMIS 0x28
49 #define JH7110_AON_GPO_PDA_0_5_CFG 0x30
51 static const struct pinctrl_pin_desc jh7110_aon_pins[] = {
52 PINCTRL_PIN(PAD_TESTEN, "TESTEN"),
53 PINCTRL_PIN(PAD_RGPIO0, "RGPIO0"),
54 PINCTRL_PIN(PAD_RGPIO1, "RGPIO1"),
55 PINCTRL_PIN(PAD_RGPIO2, "RGPIO2"),
56 PINCTRL_PIN(PAD_RGPIO3, "RGPIO3"),
57 PINCTRL_PIN(PAD_RSTN, "RSTN"),
58 PINCTRL_PIN(PAD_GMAC0_MDC, "GMAC0_MDC"),
59 PINCTRL_PIN(PAD_GMAC0_MDIO, "GMAC0_MDIO"),
60 PINCTRL_PIN(PAD_GMAC0_RXD0, "GMAC0_RXD0"),
61 PINCTRL_PIN(PAD_GMAC0_RXD1, "GMAC0_RXD1"),
62 PINCTRL_PIN(PAD_GMAC0_RXD2, "GMAC0_RXD2"),
63 PINCTRL_PIN(PAD_GMAC0_RXD3, "GMAC0_RXD3"),
64 PINCTRL_PIN(PAD_GMAC0_RXDV, "GMAC0_RXDV"),
65 PINCTRL_PIN(PAD_GMAC0_RXC, "GMAC0_RXC"),
66 PINCTRL_PIN(PAD_GMAC0_TXD0, "GMAC0_TXD0"),
67 PINCTRL_PIN(PAD_GMAC0_TXD1, "GMAC0_TXD1"),
68 PINCTRL_PIN(PAD_GMAC0_TXD2, "GMAC0_TXD2"),
69 PINCTRL_PIN(PAD_GMAC0_TXD3, "GMAC0_TXD3"),
70 PINCTRL_PIN(PAD_GMAC0_TXEN, "GMAC0_TXEN"),
71 PINCTRL_PIN(PAD_GMAC0_TXC, "GMAC0_TXC"),
74 static int jh7110_aon_set_one_pin_mux(struct jh7110_pinctrl *sfp,
76 unsigned int din, u32 dout,
79 if (pin < sfp->gc.ngpio && func == 0)
80 jh7110_set_gpiomux(sfp, pin, din, dout, doen);
85 static int jh7110_aon_get_padcfg_base(struct jh7110_pinctrl *sfp,
88 if (pin < PAD_GMAC0_MDC)
89 return JH7110_AON_GPO_PDA_0_5_CFG;
94 static void jh7110_aon_irq_handler(struct irq_desc *desc)
96 struct jh7110_pinctrl *sfp = jh7110_from_irq_desc(desc);
97 struct irq_chip *chip = irq_desc_get_chip(desc);
101 chained_irq_enter(chip, desc);
103 mis = readl_relaxed(sfp->base + JH7110_AON_GPIOMIS);
104 for_each_set_bit(pin, &mis, JH7110_AON_NGPIO)
105 generic_handle_domain_irq(sfp->gc.irq.domain, pin);
107 chained_irq_exit(chip, desc);
110 static int jh7110_aon_init_hw(struct gpio_chip *gc)
112 struct jh7110_pinctrl *sfp = container_of(gc,
113 struct jh7110_pinctrl, gc);
115 /* mask all GPIO interrupts */
116 writel_relaxed(0, sfp->base + JH7110_AON_GPIOIE);
117 /* clear edge interrupt flags */
118 writel_relaxed(0, sfp->base + JH7110_AON_GPIOIC);
119 writel_relaxed(0x0f, sfp->base + JH7110_AON_GPIOIC);
120 /* enable GPIO interrupts */
121 writel_relaxed(1, sfp->base + JH7110_AON_GPIOEN);
125 static const struct jh7110_gpio_irq_reg jh7110_aon_irq_reg = {
126 .is_reg_base = JH7110_AON_GPIOIS,
127 .ic_reg_base = JH7110_AON_GPIOIC,
128 .ibe_reg_base = JH7110_AON_GPIOIBE,
129 .iev_reg_base = JH7110_AON_GPIOIEV,
130 .ie_reg_base = JH7110_AON_GPIOIE,
131 .ris_reg_base = JH7110_AON_GPIORIS,
132 .mis_reg_base = JH7110_AON_GPIOMIS,
135 static const struct jh7110_pinctrl_soc_info jh7110_aon_pinctrl_info = {
136 .pins = jh7110_aon_pins,
137 .npins = ARRAY_SIZE(jh7110_aon_pins),
138 .ngpios = JH7110_AON_NGPIO,
139 .gc_base = JH7110_AON_GC_BASE,
140 .dout_reg_base = JH7110_AON_DOUT,
141 .dout_mask = GENMASK(3, 0),
142 .doen_reg_base = JH7110_AON_DOEN,
143 .doen_mask = GENMASK(2, 0),
144 .gpi_reg_base = JH7110_AON_GPI,
145 .gpi_mask = GENMASK(3, 0),
146 .gpioin_reg_base = JH7110_AON_GPIOIN,
147 .irq_reg = &jh7110_aon_irq_reg,
148 .jh7110_set_one_pin_mux = jh7110_aon_set_one_pin_mux,
149 .jh7110_get_padcfg_base = jh7110_aon_get_padcfg_base,
150 .jh7110_gpio_irq_handler = jh7110_aon_irq_handler,
151 .jh7110_gpio_init_hw = jh7110_aon_init_hw,
154 static const struct of_device_id jh7110_aon_pinctrl_of_match[] = {
156 .compatible = "starfive,jh7110-aon-pinctrl",
157 .data = &jh7110_aon_pinctrl_info,
161 MODULE_DEVICE_TABLE(of, jh7110_aon_pinctrl_of_match);
163 static struct platform_driver jh7110_aon_pinctrl_driver = {
164 .probe = jh7110_pinctrl_probe,
166 .name = "starfive-jh7110-aon-pinctrl",
167 .of_match_table = jh7110_aon_pinctrl_of_match,
170 module_platform_driver(jh7110_aon_pinctrl_driver);
172 MODULE_DESCRIPTION("Pinctrl driver for the StarFive JH7110 SoC aon controller");
173 MODULE_AUTHOR("Jianlong Huang <jianlong.huang@starfivetech.com>");
174 MODULE_LICENSE("GPL");