drivers/pinctrl/stm32/pinctrl-stm32.h

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * Copyright (C) Maxime Coquelin 2015
   4  * Copyright (C) STMicroelectronics 2017
   5  * Author:  Maxime Coquelin <mcoquelin.stm32@gmail.com>
   6  */
   7 #ifndef __PINCTRL_STM32_H
   8 #define __PINCTRL_STM32_H
   9
  10 #include <linux/pinctrl/pinctrl.h>
  11 #include <linux/pinctrl/pinconf-generic.h>
  12
  13 #define STM32_PIN_NO(x) ((x) << 8)
  14 #define STM32_GET_PIN_NO(x) ((x) >> 8)
  15 #define STM32_GET_PIN_FUNC(x) ((x) & 0xff)
  16
  17 #define STM32_PIN_GPIO          0
  18 #define STM32_PIN_AF(x)         ((x) + 1)
  19 #define STM32_PIN_ANALOG        (STM32_PIN_AF(15) + 1)
  20
  21 struct stm32_desc_function {
  22         const char *name;
  23         const unsigned char num;
  24 };
  25
  26 struct stm32_desc_pin {
  27         struct pinctrl_pin_desc pin;
  28         const struct stm32_desc_function *functions;
  29 };
  30
  31 #define STM32_PIN(_pin, ...)                                    \
  32         {                                                       \
  33                 .pin = _pin,                                    \
  34                 .functions = (struct stm32_desc_function[]){    \
  35                         __VA_ARGS__, { } },                     \
  36         }
  37
  38 #define STM32_FUNCTION(_num, _name)             \
  39         {                                                       \
  40                 .num = _num,                                    \
  41                 .name = _name,                                  \
  42         }
  43
  44 struct stm32_pinctrl_match_data {
  45         const struct stm32_desc_pin *pins;
  46         const unsigned int npins;
  47 };
  48
  49 struct stm32_gpio_bank;
  50
  51 int stm32_pctl_probe(struct platform_device *pdev);
  52 void stm32_pmx_get_mode(struct stm32_gpio_bank *bank,
  53                         int pin, u32 *mode, u32 *alt);
  54 #endif /* __PINCTRL_STM32_H */
  55