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kernel/linux-rt-4.4.41/include/linux/platform_data/pca953x.h 651 Bytes
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  #ifndef _LINUX_PCA953X_H
  #define _LINUX_PCA953X_H
  
  #include <linux/types.h>
  #include <linux/i2c.h>
  
  /* platform data for the PCA9539 16-bit I/O expander driver */
  
  struct pca953x_platform_data {
  	/* number of the first GPIO */
  	unsigned	gpio_base;
  
  	/* initial polarity inversion setting */
  	u32		invert;
  
  	/* interrupt base */
  	int		irq_base;
  
  	void		*context;	/* param to setup/teardown */
  
  	int		(*setup)(struct i2c_client *client,
  				unsigned gpio, unsigned ngpio,
  				void *context);
  	int		(*teardown)(struct i2c_client *client,
  				unsigned gpio, unsigned ngpio,
  				void *context);
  	const char	*const *names;
  };
  
  #endif /* _LINUX_PCA953X_H */