1 /* SPDX-License-Identifier: GPL-2.0-only */ 1
2
3 #ifndef _LINUX_GPIO_REGMAP_H
4 #define _LINUX_GPIO_REGMAP_H
5
6 struct device;
7 struct fwnode_handle;
8 struct gpio_regmap;
9 struct irq_domain;
10 struct regmap;
11
12 #define GPIO_REGMAP_ADDR_ZERO ((unsigned int)(
13 #define GPIO_REGMAP_ADDR(addr) ((addr) ? : GPI
14
15 /**
16 * struct gpio_regmap_config - Description of
17 * @parent: The parent device
18 * @regmap: The regmap used to acc
19 * given, the name of the
20 * @fwnode: (Optional) The firmwar
21 * If not given, the fwno
22 * @label: (Optional) Descriptive
23 * If not given, the name
24 * @ngpio: Number of GPIOs
25 * @names: (Optional) Array of na
26 * @reg_dat_base: (Optional) (in) regist
27 * @reg_set_base: (Optional) set registe
28 * @reg_clr_base: (Optional) clear regis
29 * @reg_dir_in_base: (Optional) in setting
30 * @reg_dir_out_base: (Optional) out setting
31 * @reg_stride: (Optional) May be set
32 * same type, dat, set, e
33 * @ngpio_per_reg: Number of GPIOs per re
34 * @irq_domain: (Optional) IRQ domain
35 * interrupt-capable
36 * @reg_mask_xlate: (Optional) Translates
37 * offset to a register/b
38 * given the default gpio
39 * is used.
40 * @drvdata: (Optional) Pointer to
41 * not used by gpio-remap
42 * driver callback(s).
43 *
44 * The ->reg_mask_xlate translates a given bas
45 * register and mask pair. The base address is
46 * base addresses in this structure.
47 *
48 * Although all register base addresses are ma
49 * several rules:
50 * 1. if you only have @reg_dat_base set,
51 * 2. if you only have @reg_set_base set,
52 * 3. if you have either @reg_dir_in_base
53 * you have to set both @reg_dat_base a
54 * 4. if you have @reg_set_base set, you m
55 * two different registers for setting
56 * also valid for the output-only case.
57 * 5. @reg_dir_in_base and @reg_dir_out_ba
58 * hardware which has redundant registe
59 *
60 * Note: All base addresses may have the speci
61 * which forces the address to the value 0.
62 */
63 struct gpio_regmap_config {
64 struct device *parent;
65 struct regmap *regmap;
66 struct fwnode_handle *fwnode;
67
68 const char *label;
69 int ngpio;
70 const char *const *names;
71
72 unsigned int reg_dat_base;
73 unsigned int reg_set_base;
74 unsigned int reg_clr_base;
75 unsigned int reg_dir_in_base;
76 unsigned int reg_dir_out_base;
77 int reg_stride;
78 int ngpio_per_reg;
79 struct irq_domain *irq_domain;
80
81 int (*reg_mask_xlate)(struct gpio_regm
82 unsigned int off
83 unsigned int *ma
84
85 void *drvdata;
86 };
87
88 struct gpio_regmap *gpio_regmap_register(const
89 void gpio_regmap_unregister(struct gpio_regmap
90 struct gpio_regmap *devm_gpio_regmap_register(
91
92 void *gpio_regmap_get_drvdata(struct gpio_regm
93
94 #endif /* _LINUX_GPIO_REGMAP_H */
95
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