不知道如何赋值

1万 · 2017-9-10 18:04

用的TI sitara系列 AM3517，用NXP SC16IS752用MCSPI2扩两路UART，在给以下变量赋值时，不知道如何赋值，麻烦请大家给些提示。

1万 · 2017-9-10 18:06

代码呢

1万 · 2017-9-10 18:09

struct gpio_chip {
      const char             *label;
      struct device             *dev;
      struct module             *owner;

      int                      (*request)(struct gpio_chip *chip,
                                             unsigned offset);
      void                      (*free)(struct gpio_chip *chip,
                                             unsigned offset);

      int                      (*direction_input)(struct gpio_chip *chip,
                                             unsigned offset);
      int                      (*get)(struct gpio_chip *chip,
                                             unsigned offset);
      int                      (*direction_output)(struct gpio_chip *chip,
                                             unsigned offset, int value);
      void                      (*set)(struct gpio_chip *chip,
                                             unsigned offset, int value);

      int                      (*to_irq)(struct gpio_chip *chip,
                                             unsigned offset);

      void                      (*dbg_show)(struct seq_file *s,
                                             struct gpio_chip *chip);
      int                      base;
      u16                      ngpio;
      char                      **names;
      unsigned             can_sleep:1;
      unsigned             exported:1;
};