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 a single i.MX pin
  22  * @pin: the pin_id of this pin
  23  * @mux_mode: the mux mode for this pin.
  24  * @input_reg: the select input register offset for this pin if any
  25  *      0 if no select input setting needed.
  26  * @input_val: the select input value for this pin.
  27  * @configs: the config for this pin.
  28  */
  29 struct imx_pin {
  30         unsigned int pin;
  31         unsigned int mux_mode;
  32         u16 input_reg;
  33         unsigned int input_val;
  34         unsigned long config;
  35 };
  36
  37 /**
  38  * struct imx_pin_group - describes an IMX pin group
  39  * @name: the name of this specific pin group
  40  * @npins: the number of pins in this group array, i.e. the number of
  41  *      elements in .pins so we can iterate over that array
  42  * @pin_ids: array of pin_ids. pinctrl forces us to maintain such an array
  43  * @pins: array of pins
  44  */
  45 struct imx_pin_group {
  46         const char *name;
  47         unsigned npins;
  48         unsigned int *pin_ids;
  49         struct imx_pin *pins;
  50 };
  51
  52 /**
  53  * struct imx_pmx_func - describes IMX pinmux functions
  54  * @name: the name of this specific function
  55  * @groups: corresponding pin groups
  56  * @num_groups: the number of groups
  57  */
  58 struct imx_pmx_func {
  59         const char *name;
  60         const char **groups;
  61         unsigned num_groups;
  62 };
  63
  64 /**
  65  * struct imx_pin_reg - describe a pin reg map
  66  * @mux_reg: mux register offset
  67  * @conf_reg: config register offset
  68  */
  69 struct imx_pin_reg {
  70         u16 mux_reg;
  71         u16 conf_reg;
  72 };
  73
  74 struct imx_pinctrl_soc_info {
  75         struct device *dev;
  76         const struct pinctrl_pin_desc *pins;
  77         unsigned int npins;
  78         struct imx_pin_reg *pin_regs;
  79         struct imx_pin_group *groups;
  80         unsigned int ngroups;
  81         struct imx_pmx_func *functions;
  82         unsigned int nfunctions;
  83         unsigned int flags;
  84 };
  85
  86 #define ZERO_OFFSET_VALID       0x1
  87 #define SHARE_MUX_CONF_REG      0x2
  88
  89 #define NO_MUX          0x0
  90 #define NO_PAD          0x0
  91
  92 #define IMX_PINCTRL_PIN(pin) PINCTRL_PIN(pin, #pin)
  93
  94 #define PAD_CTL_MASK(len)       ((1 << len) - 1)
  95 #define IMX_MUX_MASK    0x7
  96 #define IOMUXC_CONFIG_SION      (0x1 << 4)
  97
  98 int imx_pinctrl_probe(struct platform_device *pdev,
  99                         struct imx_pinctrl_soc_info *info);
 100 int imx_pinctrl_remove(struct platform_device *pdev);
 101 #endif /* __DRIVERS_PINCTRL_IMX_H */