drivers/pinctrl/pinctrl-imx.h

   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
  18 struct 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  * @input_reg: select input register offset for this mux if any
  30  *      0 if no select input setting needed.
  31  * @input_val: the select input value for each pin in this group. The size of
  32  *      this array is the same as pins.
  33  * @configs: the config for each pin in this group. The size of this
  34  *      array is the same as pins.
  35  */
  36 struct imx_pin_group {
  37         const char *name;
  38         unsigned int *pins;
  39         unsigned npins;
  40         unsigned int *mux_mode;
  41         u16 *input_reg;
  42         unsigned int *input_val;
  43         unsigned long *configs;
  44 };
  45
  46 /**
  47  * struct imx_pmx_func - describes IMX pinmux functions
  48  * @name: the name of this specific function
  49  * @groups: corresponding pin groups
  50  * @num_groups: the number of groups
  51  */
  52 struct imx_pmx_func {
  53         const char *name;
  54         const char **groups;
  55         unsigned num_groups;
  56 };
  57
  58 /**
  59  * struct imx_pin_reg - describe a pin reg map
  60  * @mux_reg: mux register offset
  61  * @conf_reg: config register offset
  62  */
  63 struct imx_pin_reg {
  64         u16 mux_reg;
  65         u16 conf_reg;
  66 };
  67
  68 struct imx_pinctrl_soc_info {
  69         struct device *dev;
  70         const struct pinctrl_pin_desc *pins;
  71         unsigned int npins;
  72         struct imx_pin_reg *pin_regs;
  73         struct imx_pin_group *groups;
  74         unsigned int ngroups;
  75         struct imx_pmx_func *functions;
  76         unsigned int nfunctions;
  77         unsigned int flags;
  78 };
  79
  80 #define ZERO_OFFSET_VALID       0x1
  81 #define SHARE_MUX_CONF_REG      0x2
  82
  83 #define NO_MUX          0x0
  84 #define NO_PAD          0x0
  85
  86 #define IMX_PINCTRL_PIN(pin) PINCTRL_PIN(pin, #pin)
  87
  88 #define PAD_CTL_MASK(len)       ((1 << len) - 1)
  89 #define IMX_MUX_MASK    0x7
  90 #define IOMUXC_CONFIG_SION      (0x1 << 4)
  91
  92 int imx_pinctrl_probe(struct platform_device *pdev,
  93                         struct imx_pinctrl_soc_info *info);
  94 int imx_pinctrl_remove(struct platform_device *pdev);
  95 #endif /* __DRIVERS_PINCTRL_IMX_H */