drivers/pinctrl/pxa/pinctrl-pxa2xx.h

   1 /*
   2  * Marvell PXA2xx family pin control
   3  *
   4  * Copyright (C) 2015 Robert Jarzmik
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; version 2 of the License.
   9  *
  10  */
  11
  12 #ifndef __PINCTRL_PXA_H
  13 #define __PINCTRL_PXA_H
  14
  15 #define PXA_FUNCTION(_dir, _af, _name)                          \
  16         {                                                       \
  17                 .name = _name,                                  \
  18                 .muxval = (_dir | (_af << 1)),                  \
  19         }
  20
  21 #define PXA_PIN(_pin, funcs...)                                 \
  22         {                                                       \
  23                 .pin = _pin,                                    \
  24                 .functions = (struct pxa_desc_function[]){      \
  25                         funcs, { } },                           \
  26         }
  27
  28 #define PXA_GPIO_PIN(_pin, funcs...)                            \
  29         {                                                       \
  30                 .pin = _pin,                                    \
  31                 .functions = (struct pxa_desc_function[]){      \
  32                         PXA_FUNCTION(0, 0, "gpio_in"),          \
  33                         PXA_FUNCTION(1, 0, "gpio_out"),         \
  34                         funcs, { } },                           \
  35         }
  36
  37 #define PXA_GPIO_ONLY_PIN(_pin)                                 \
  38         {                                                       \
  39                 .pin = _pin,                                    \
  40                 .functions = (struct pxa_desc_function[]){      \
  41                         PXA_FUNCTION(0, 0, "gpio_in"),          \
  42                         PXA_FUNCTION(1, 0, "gpio_out"),         \
  43                         { } },                                  \
  44         }
  45
  46 #define PXA_PINCTRL_PIN(pin)            \
  47         PINCTRL_PIN(pin, "P" #pin)
  48
  49 struct pxa_desc_function {
  50         const char      *name;
  51         u8              muxval;
  52 };
  53
  54 struct pxa_desc_pin {
  55         struct pinctrl_pin_desc         pin;
  56         struct pxa_desc_function        *functions;
  57 };
  58
  59 struct pxa_pinctrl_group {
  60         const char      *name;
  61         unsigned        pin;
  62 };
  63
  64 struct pxa_pinctrl_function {
  65         const char      *name;
  66         const char      **groups;
  67         unsigned        ngroups;
  68 };
  69
  70 struct pxa_pinctrl {
  71         spinlock_t                      lock;
  72         void __iomem                    **base_gafr;
  73         void __iomem                    **base_gpdr;
  74         void __iomem                    **base_pgsr;
  75         struct device                   *dev;
  76         struct pinctrl_desc             desc;
  77         struct pinctrl_dev              *pctl_dev;
  78         unsigned                        npins;
  79         const struct pxa_desc_pin       *ppins;
  80         unsigned                        ngroups;
  81         struct pxa_pinctrl_group        *groups;
  82         unsigned                        nfuncs;
  83         struct pxa_pinctrl_function     *functions;
  84         char                            *name;
  85 };
  86
  87 int pxa2xx_pinctrl_init(struct platform_device *pdev,
  88                         const struct pxa_desc_pin *ppins, int npins,
  89                         void __iomem *base_gafr[], void __iomem *base_gpdr[],
  90                         void __iomem *base_gpsr[]);
  91
  92 #endif /* __PINCTRL_PXA_H */