linux/drivers/pinctrl/pinctrl-imx.h
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   1/*
   2 * IMX pinmux core definitions
   3 *
   4 * Copyright (C) 2012 Freescale Semiconductor, Inc.
   5 * Copyright (C) 2012 Linaro Ltd.
   6 *
   7 * Author: Dong Aisheng <dong.aisheng@linaro.org>
   8 *
   9 * This program is free software; you can redistribute it and/or modify
  10 * it under the terms of the GNU General Public License as published by
  11 * the Free Software Foundation; either version 2 of the License, or
  12 * (at your option) any later version.
  13 */
  14
  15#ifndef __DRIVERS_PINCTRL_IMX_H
  16#define __DRIVERS_PINCTRL_IMX_H
  17
  18struct platform_device;
  19
  20/**
  21 * struct imx_pin_group - describes an IMX pin group
  22 * @name: the name of this specific pin group
  23 * @pins: an array of discrete physical pins used in this group, taken
  24 *      from the driver-local pin enumeration space
  25 * @npins: the number of pins in this group array, i.e. the number of
  26 *      elements in .pins so we can iterate over that array
  27 * @mux_mode: the mux mode for each pin in this group. The size of this
  28 *      array is the same as pins.
  29 * @configs: the config for each pin in this group. The size of this
  30 *      array is the same as pins.
  31 */
  32struct imx_pin_group {
  33        const char *name;
  34        unsigned int *pins;
  35        unsigned npins;
  36        unsigned int *mux_mode;
  37        unsigned long *configs;
  38};
  39
  40/**
  41 * struct imx_pmx_func - describes IMX pinmux functions
  42 * @name: the name of this specific function
  43 * @groups: corresponding pin groups
  44 * @num_groups: the number of groups
  45 */
  46struct imx_pmx_func {
  47        const char *name;
  48        const char **groups;
  49        unsigned num_groups;
  50};
  51
  52/**
  53 * struct imx_pin_reg - describe a pin reg map
  54 * The last 3 members are used for select input setting
  55 * @pid: pin id
  56 * @mux_reg: mux register offset
  57 * @conf_reg: config register offset
  58 * @mux_mode: mux mode
  59 * @input_reg: select input register offset for this mux if any
  60 *  0 if no select input setting needed.
  61 * @input_val: the value set to select input register
  62 */
  63struct imx_pin_reg {
  64        u16 pid;
  65        u16 mux_reg;
  66        u16 conf_reg;
  67        u8 mux_mode;
  68        u16 input_reg;
  69        u8 input_val;
  70};
  71
  72struct imx_pinctrl_soc_info {
  73        struct device *dev;
  74        const struct pinctrl_pin_desc *pins;
  75        unsigned int npins;
  76        const struct imx_pin_reg *pin_regs;
  77        unsigned int npin_regs;
  78        struct imx_pin_group *groups;
  79        unsigned int ngroups;
  80        struct imx_pmx_func *functions;
  81        unsigned int nfunctions;
  82};
  83
  84#define NO_MUX          0x0
  85#define NO_PAD          0x0
  86
  87#define IMX_PIN_REG(id, conf, mux, mode, input, val)    \
  88        {                                               \
  89                .pid = id,                              \
  90                .conf_reg = conf,                       \
  91                .mux_reg = mux,                         \
  92                .mux_mode  = mode,                      \
  93                .input_reg = input,                     \
  94                .input_val = val,                       \
  95        }
  96
  97#define IMX_PINCTRL_PIN(pin) PINCTRL_PIN(pin, #pin)
  98
  99#define PAD_CTL_MASK(len)       ((1 << len) - 1)
 100#define IMX_MUX_MASK    0x7
 101#define IOMUXC_CONFIG_SION      (0x1 << 4)
 102
 103int imx_pinctrl_probe(struct platform_device *pdev,
 104                        struct imx_pinctrl_soc_info *info);
 105int imx_pinctrl_remove(struct platform_device *pdev);
 106#endif /* __DRIVERS_PINCTRL_IMX_H */
 107
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