Release 4.16 drivers/pinctrl/meson/pinctrl-meson.h

/*
 * Pin controller and GPIO driver for Amlogic Meson SoCs
 *
 * Copyright (C) 2014 Beniamino Galvani <b.galvani@gmail.com>
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * version 2 as published by the Free Software Foundation.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */

#include <linux/gpio.h>
#include <linux/pinctrl/pinctrl.h>
#include <linux/platform_device.h>
#include <linux/regmap.h>
#include <linux/types.h>

/**
 * 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 {
	
const char *name;
	
const unsigned int *pins;
	
unsigned int num_pins;
	
const void *data;
};

/**
 * 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 {
	
const char *name;
	
const char * const *groups;
	
unsigned int num_groups;
};

/**
 * 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 {
	
unsigned int reg;
	
unsigned int bit;
};

/**
 * enum meson_reg_type - type of registers encoded in @meson_reg_desc
 */

enum meson_reg_type {
	
REG_PULLEN,
	
REG_PULL,
	
REG_DIR,
	
REG_OUT,
	
REG_IN,
	
NUM_REG,
};

/**
 * 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 {
	
const char *name;
	
unsigned int first;
	
unsigned int last;
	
int irq_first;
	
int irq_last;
	
struct meson_reg_desc regs[NUM_REG];
};


struct meson_pinctrl_data {
	
const char *name;
	
const struct pinctrl_pin_desc *pins;
	
struct meson_pmx_group *groups;
	
struct meson_pmx_func *funcs;
	
unsigned int num_pins;
	
unsigned int num_groups;
	
unsigned int num_funcs;
	
struct meson_bank *banks;
	
unsigned int num_banks;
	
const struct pinmux_ops *pmx_ops;
	
void *pmx_data;
};


struct meson_pinctrl {
	
struct device *dev;
	
struct pinctrl_dev *pcdev;
	
struct pinctrl_desc desc;
	
struct meson_pinctrl_data *data;
	
struct regmap *reg_mux;
	
struct regmap *reg_pullen;
	
struct regmap *reg_pull;
	
struct regmap *reg_gpio;
	
struct gpio_chip chip;
	
struct device_node *of_node;
};


#define FUNCTION(fn)							\
	{                                                               \
                .name = #fn,                                            \
                .groups = fn ## _groups,                                \
                .num_groups = ARRAY_SIZE(fn ## _groups),                \
        }


#define BANK(n, f, l, fi, li, per, peb, pr, pb, dr, db, or, ob, ir, ib)	\
	{                                                               \
                .name           = n,                                    \
                .first          = f,                                    \
                .last           = l,                                    \
                .irq_first      = fi,                                   \
                .irq_last       = li,                                   \
                .regs = {                                               \
                        [REG_PULLEN]    = { per, peb },                 \
                        [REG_PULL]      = { pr, pb },                   \
                        [REG_DIR]       = { dr, db },                   \
                        [REG_OUT]       = { or, ob },                   \
                        [REG_IN]        = { ir, ib },                   \
                },                                                      \
         }


#define MESON_PIN(x) PINCTRL_PIN(x, #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);
Overall Contributors
Person
Tokens
Prop
Commits
CommitProp
Beniamino Galvani
258
74.35%
2
25.00%
Jerome Brunet
84
24.21%
4
50.00%
Xingyu Chen
4
1.15%
1
12.50%
Neil Armstrong
1
0.29%
1
12.50%
Total
347
100.00%
8
100.00%
Directory: drivers/pinctrl/meson

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