1 /* SPDX-License-Identifier: GPL-2.0+ */
3 * (C) Copyright 2016 - Beniamino Galvani <b.galvani@gmail.com>
6 #ifndef __PINCTRL_MESON_H__
7 #define __PINCTRL_MESON_H__
9 #include <linux/types.h>
11 struct meson_pmx_group {
13 const unsigned int *pins;
14 unsigned int num_pins;
18 struct meson_pmx_func {
20 const char * const *groups;
21 unsigned int num_groups;
24 struct meson_pinctrl_data {
26 struct meson_pmx_group *groups;
27 struct meson_pmx_func *funcs;
28 struct meson_bank *banks;
29 unsigned int pin_base;
30 unsigned int num_pins;
31 unsigned int num_groups;
32 unsigned int num_funcs;
33 unsigned int num_banks;
34 const struct driver *gpio_driver;
38 struct meson_pinctrl {
39 struct meson_pinctrl_data *data;
40 void __iomem *reg_mux;
41 void __iomem *reg_gpio;
45 * struct meson_reg_desc - a register descriptor
47 * @reg: register offset in the regmap
48 * @bit: bit index in register
50 * The structure describes the information needed to control pull,
51 * pull-enable, direction, etc. for a single pin
53 struct meson_reg_desc {
59 * enum meson_reg_type - type of registers encoded in @meson_reg_desc
74 * @first: first pin of the bank
75 * @last: last pin of the bank
76 * @regs: array of register descriptors
78 * A bank represents a set of pins controlled by a contiguous set of
79 * bits in the domain registers. The structure specifies which bits in
80 * the regmap control the different functionalities. Each member of
81 * the @regs array refers to the first pin of the bank.
87 struct meson_reg_desc regs[NUM_REG];
90 #define PIN(x, b) (b + x)
92 #define FUNCTION(fn) \
95 .groups = fn ## _groups, \
96 .num_groups = ARRAY_SIZE(fn ## _groups), \
99 #define BANK(n, f, l, per, peb, pr, pb, dr, db, or, ob, ir, ib) \
105 [REG_PULLEN] = { per, peb }, \
106 [REG_PULL] = { pr, pb }, \
107 [REG_DIR] = { dr, db }, \
108 [REG_OUT] = { or, ob }, \
109 [REG_IN] = { ir, ib }, \
113 #define MESON_PIN(x, b) PINCTRL_PIN(PIN(x, b), #x)
115 extern const struct pinctrl_ops meson_pinctrl_ops;
117 int meson_pinctrl_get_groups_count(struct udevice *dev);
118 const char *meson_pinctrl_get_group_name(struct udevice *dev,
119 unsigned int selector);
120 int meson_pinmux_get_functions_count(struct udevice *dev);
121 const char *meson_pinmux_get_function_name(struct udevice *dev,
122 unsigned int selector);
123 int meson_pinctrl_probe(struct udevice *dev);
125 int meson_gpio_get(struct udevice *dev, unsigned int offset);
126 int meson_gpio_set(struct udevice *dev, unsigned int offset, int value);
127 int meson_gpio_get_direction(struct udevice *dev, unsigned int offset);
128 int meson_gpio_direction_input(struct udevice *dev, unsigned int offset);
129 int meson_gpio_direction_output(struct udevice *dev, unsigned int offset,
131 int meson_gpio_probe(struct udevice *dev);
133 #endif /* __PINCTRL_MESON_H__ */