drivers/pinctrl/stm32/pinctrl-stm32.h

   1 /*
   2  * Copyright (C) Maxime Coquelin 2015
   3  * Author:  Maxime Coquelin <mcoquelin.stm32@gmail.com>
   4  * License terms:  GNU General Public License (GPL), version 2
   5  */
   6 #ifndef __PINCTRL_STM32_H
   7 #define __PINCTRL_STM32_H
   8
   9 #include <linux/pinctrl/pinctrl.h>
  10 #include <linux/pinctrl/pinconf-generic.h>
  11
  12 #define STM32_PIN_NO(x) ((x) << 8)
  13 #define STM32_GET_PIN_NO(x) ((x) >> 8)
  14 #define STM32_GET_PIN_FUNC(x) ((x) & 0xff)
  15
  16 #define STM32_PIN_GPIO          0
  17 #define STM32_PIN_AF(x)         ((x) + 1)
  18 #define STM32_PIN_ANALOG        (STM32_PIN_AF(15) + 1)
  19
  20 struct stm32_desc_function {
  21         const char *name;
  22         const unsigned char num;
  23 };
  24
  25 struct stm32_desc_pin {
  26         struct pinctrl_pin_desc pin;
  27         const struct stm32_desc_function *functions;
  28 };
  29
  30 #define STM32_PIN(_pin, ...)                                    \
  31         {                                                       \
  32                 .pin = _pin,                                    \
  33                 .functions = (struct stm32_desc_function[]){    \
  34                         __VA_ARGS__, { } },                     \
  35         }
  36
  37 #define STM32_FUNCTION(_num, _name)             \
  38         {                                                       \
  39                 .num = _num,                                    \
  40                 .name = _name,                                  \
  41         }
  42
  43 struct stm32_pinctrl_match_data {
  44         const struct stm32_desc_pin *pins;
  45         const unsigned int npins;
  46 };
  47
  48 struct stm32_gpio_bank;
  49
  50 int stm32_pctl_probe(struct platform_device *pdev);
  51 void stm32_pmx_get_mode(struct stm32_gpio_bank *bank,
  52                         int pin, u32 *mode, u32 *alt);
  53 #endif /* __PINCTRL_STM32_H */
  54