xref: /linux/drivers/pinctrl/starfive/pinctrl-starfive-jh7110.h (revision 0ea5c948cb64bab5bc7a5516774eb8536f05aa0d)
1 /* SPDX-License-Identifier: GPL-2.0 */
2 /*
3  * Pinctrl / GPIO driver for StarFive JH7110 SoC
4  *
5  * Copyright (C) 2022 StarFive Technology Co., Ltd.
6  */
7 
8 #ifndef __PINCTRL_STARFIVE_JH7110_H__
9 #define __PINCTRL_STARFIVE_JH7110_H__
10 
11 #include <linux/pinctrl/pinconf-generic.h>
12 #include <linux/pinctrl/pinmux.h>
13 
14 struct jh7110_pinctrl {
15 	struct device *dev;
16 	struct gpio_chip gc;
17 	struct pinctrl_gpio_range gpios;
18 	raw_spinlock_t lock;
19 	void __iomem *base;
20 	struct pinctrl_dev *pctl;
21 	/* register read/write mutex */
22 	struct mutex mutex;
23 	const struct jh7110_pinctrl_soc_info *info;
24 	u32 *saved_regs;
25 };
26 
27 struct jh7110_gpio_irq_reg {
28 	unsigned int is_reg_base;
29 	unsigned int ic_reg_base;
30 	unsigned int ibe_reg_base;
31 	unsigned int iev_reg_base;
32 	unsigned int ie_reg_base;
33 	unsigned int ris_reg_base;
34 	unsigned int mis_reg_base;
35 };
36 
37 struct jh7110_pinctrl_soc_info {
38 	const struct pinctrl_pin_desc *pins;
39 	unsigned int npins;
40 	unsigned int ngpios;
41 	unsigned int gc_base;
42 
43 	/* gpio dout/doen/din/gpioinput register */
44 	unsigned int dout_reg_base;
45 	unsigned int dout_mask;
46 	unsigned int doen_reg_base;
47 	unsigned int doen_mask;
48 	unsigned int gpi_reg_base;
49 	unsigned int gpi_mask;
50 	unsigned int gpioin_reg_base;
51 
52 	const struct jh7110_gpio_irq_reg *irq_reg;
53 
54 	unsigned int nsaved_regs;
55 
56 	/* generic pinmux */
57 	int (*jh7110_set_one_pin_mux)(struct jh7110_pinctrl *sfp,
58 				      unsigned int pin,
59 				      unsigned int din, u32 dout,
60 				      u32 doen, u32 func);
61 	/* gpio chip */
62 	int (*jh7110_get_padcfg_base)(struct jh7110_pinctrl *sfp,
63 				      unsigned int pin);
64 	void (*jh7110_gpio_irq_handler)(struct irq_desc *desc);
65 	int (*jh7110_gpio_init_hw)(struct gpio_chip *gc);
66 };
67 
68 void jh7110_set_gpiomux(struct jh7110_pinctrl *sfp, unsigned int pin,
69 			unsigned int din, u32 dout, u32 doen);
70 int jh7110_pinctrl_probe(struct platform_device *pdev);
71 struct jh7110_pinctrl *jh7110_from_irq_desc(struct irq_desc *desc);
72 extern const struct dev_pm_ops jh7110_pinctrl_pm_ops;
73 
74 #endif /* __PINCTRL_STARFIVE_JH7110_H__ */
75