drivers/pinctrl/pxa/pinctrl-pxa2xx.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  * Marvell PXA2xx family pin control
   4  *
   5  * Copyright (C) 2015 Robert Jarzmik
   6  */
   7
   8 #ifndef __PINCTRL_PXA_H
   9 #define __PINCTRL_PXA_H
  10
  11 #define PXA_FUNCTION(_dir, _af, _name)                          \
  12         {                                                       \
  13                 .name = _name,                                  \
  14                 .muxval = (_dir | (_af << 1)),                  \
  15         }
  16
  17 #define PXA_PIN(_pin, funcs...)                                 \
  18         {                                                       \
  19                 .pin = _pin,                                    \
  20                 .functions = (struct pxa_desc_function[]){      \
  21                         funcs, { } },                           \
  22         }
  23
  24 #define PXA_GPIO_PIN(_pin, funcs...)                            \
  25         {                                                       \
  26                 .pin = _pin,                                    \
  27                 .functions = (struct pxa_desc_function[]){      \
  28                         PXA_FUNCTION(0, 0, "gpio_in"),          \
  29                         PXA_FUNCTION(1, 0, "gpio_out"),         \
  30                         funcs, { } },                           \
  31         }
  32
  33 #define PXA_GPIO_ONLY_PIN(_pin)                                 \
  34         {                                                       \
  35                 .pin = _pin,                                    \
  36                 .functions = (struct pxa_desc_function[]){      \
  37                         PXA_FUNCTION(0, 0, "gpio_in"),          \
  38                         PXA_FUNCTION(1, 0, "gpio_out"),         \
  39                         { } },                                  \
  40         }
  41
  42 #define PXA_PINCTRL_PIN(pin)            \
  43         PINCTRL_PIN(pin, "P" #pin)
  44
  45 struct pxa_desc_function {
  46         const char      *name;
  47         u8              muxval;
  48 };
  49
  50 struct pxa_desc_pin {
  51         struct pinctrl_pin_desc         pin;
  52         struct pxa_desc_function        *functions;
  53 };
  54
  55 struct pxa_pinctrl_group {
  56         const char      *name;
  57         unsigned        pin;
  58 };
  59
  60 struct pxa_pinctrl_function {
  61         const char      *name;
  62         const char      **groups;
  63         unsigned        ngroups;
  64 };
  65
  66 struct pxa_pinctrl {
  67         spinlock_t                      lock;
  68         void __iomem                    **base_gafr;
  69         void __iomem                    **base_gpdr;
  70         void __iomem                    **base_pgsr;
  71         struct device                   *dev;
  72         struct pinctrl_desc             desc;
  73         struct pinctrl_dev              *pctl_dev;
  74         unsigned                        npins;
  75         const struct pxa_desc_pin       *ppins;
  76         unsigned                        ngroups;
  77         struct pxa_pinctrl_group        *groups;
  78         unsigned                        nfuncs;
  79         struct pxa_pinctrl_function     *functions;
  80         char                            *name;
  81 };
  82
  83 int pxa2xx_pinctrl_init(struct platform_device *pdev,
  84                         const struct pxa_desc_pin *ppins, int npins,
  85                         void __iomem *base_gafr[], void __iomem *base_gpdr[],
  86                         void __iomem *base_gpsr[]);
  87
  88 #endif /* __PINCTRL_PXA_H */