/* SPDX-License-Identifier: GPL-2.0-only */ /* * Pin controller and GPIO driver for Amlogic Meson SoCs * * Copyright (C) 2014 Beniamino Galvani <[email protected]> */ #include <linux/gpio/driver.h> #include <linux/pinctrl/pinctrl.h> #include <linux/platform_device.h> #include <linux/regmap.h> #include <linux/types.h> #include <linux/module.h> struct fwnode_handle; struct meson_pinctrl; /** * struct meson_pmx_group - a pinmux group * * @name: group name * @pins: pins in the group * @num_pins: number of pins in the group * @is_gpio: whether the group is a single GPIO group * @reg: register offset for the group in the domain mux registers * @bit bit index enabling the group * @domain: index of the domain this group belongs to */ struct meson_pmx_group { … }; /** * struct meson_pmx_func - a pinmux function * * @name: function name * @groups: groups in the function * @num_groups: number of groups in the function */ struct meson_pmx_func { … }; /** * struct meson_reg_desc - a register descriptor * * @reg: register offset in the regmap * @bit: bit index in register * * The structure describes the information needed to control pull, * pull-enable, direction, etc. for a single pin */ struct meson_reg_desc { … }; /** * enum meson_reg_type - type of registers encoded in @meson_reg_desc */ enum meson_reg_type { … }; /** * enum meson_pinconf_drv - value of drive-strength supported */ enum meson_pinconf_drv { … }; /** * struct meson bank * * @name: bank name * @first: first pin of the bank * @last: last pin of the bank * @irq: hwirq base number of the bank * @regs: array of register descriptors * * A bank represents a set of pins controlled by a contiguous set of * bits in the domain registers. The structure specifies which bits in * the regmap control the different functionalities. Each member of * the @regs array refers to the first pin of the bank. */ struct meson_bank { … }; struct meson_pinctrl_data { … }; struct meson_pinctrl { … }; #define FUNCTION(fn) … #define BANK_DS(n, f, l, fi, li, per, peb, pr, pb, dr, db, or, ob, ir, ib, \ dsr, dsb) … #define BANK(n, f, l, fi, li, per, peb, pr, pb, dr, db, or, ob, ir, ib) … #define MESON_PIN(x) … /* Common pmx functions */ int meson_pmx_get_funcs_count(struct pinctrl_dev *pcdev); const char *meson_pmx_get_func_name(struct pinctrl_dev *pcdev, unsigned selector); int meson_pmx_get_groups(struct pinctrl_dev *pcdev, unsigned selector, const char * const **groups, unsigned * const num_groups); /* Common probe function */ int meson_pinctrl_probe(struct platform_device *pdev); /* Common ao groups extra dt parse function for SoCs before g12a */ int meson8_aobus_parse_dt_extra(struct meson_pinctrl *pc); /* Common extra dt parse function for SoCs like A1 */ int meson_a1_parse_dt_extra(struct meson_pinctrl *pc);
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