linux-imx

/* SPDX-License-Identifier: GPL-2.0+ */

/*

 * Copyright 2012 Freescale Semiconductor, Inc.

 */

​

#ifndef __PINCTRL_MXS_H

#define __PINCTRL_MXS_H

​

#include <linux/platform_device.h>

#include <linux/pinctrl/pinctrl.h>

​

#define SET 0x4

#define CLR 0x8

#define TOG 0xc

​

#define MXS_PINCTRL_PIN(pin)    PINCTRL_PIN(pin, #pin)

#define PINID(bank, pin)    ((bank) * 32 + (pin))

​

/*

 * pinmux-id bit field definitions

 *

 * bank:    15..12  (4)

 * pin:     11..4   (8)

 * muxsel:  3..0    (4)

 */

#define MUXID_TO_PINID(m)   PINID((m) >> 12 & 0xf, (m) >> 4 & 0xff)

#define MUXID_TO_MUXSEL(m)  ((m) & 0xf)

​

#define PINID_TO_BANK(p)    ((p) >> 5)

#define PINID_TO_PIN(p)     ((p) % 32)

​

/*

 * pin config bit field definitions

 *

 * pull-up: 6..5    (2)

 * voltage: 4..3    (2)

 * mA:      2..0    (3)

 *

 * MSB of each field is presence bit for the config.

 */

#define PULL_PRESENT        (1 << 6)

#define PULL_SHIFT      5

#define VOL_PRESENT     (1 << 4)

#define VOL_SHIFT       3

#define MA_PRESENT      (1 << 2)

#define MA_SHIFT        0

#define CONFIG_TO_PULL(c)   ((c) >> PULL_SHIFT & 0x1)

#define CONFIG_TO_VOL(c)    ((c) >> VOL_SHIFT & 0x1)

#define CONFIG_TO_MA(c)     ((c) >> MA_SHIFT & 0x3)

​

struct mxs_function {

    const char *name;

    const char **groups;

    unsigned ngroups;

};

​

struct mxs_group {

    const char *name;

    unsigned int *pins;

    unsigned npins;

    u8 *muxsel;

    u8 config;

};

​

struct mxs_regs {

    u16 muxsel;

    u16 drive;

    u16 pull;

};

​

struct mxs_pinctrl_soc_data {

    const struct mxs_regs *regs;

    const struct pinctrl_pin_desc *pins;

    unsigned npins;

    struct mxs_function *functions;

    unsigned nfunctions;

    struct mxs_group *groups;

    unsigned ngroups;

};

​

int mxs_pinctrl_probe(struct platform_device *pdev,

              struct mxs_pinctrl_soc_data *soc);

​

#endif /* __PINCTRL_MXS_H */