/include/linux/i2c/pca953x.h

 1#ifndef _LINUX_PCA953X_H
 2#define _LINUX_PCA953X_H
 3
 4#include <linux/types.h>
 5#include <linux/i2c.h>
 6
 7/* platform data for the PCA9539 16-bit I/O expander driver */
 8
 9struct pca953x_platform_data {
10	/* number of the first GPIO */
11	unsigned	gpio_base;
12
13	/* initial polarity inversion setting */
14	uint16_t	invert;
15
16	/* interrupt base */
17	int		irq_base;
18
19	void		*context;	/* param to setup/teardown */
20
21	int		(*setup)(struct i2c_client *client,
22				unsigned gpio, unsigned ngpio,
23				void *context);
24	int		(*teardown)(struct i2c_client *client,
25				unsigned gpio, unsigned ngpio,
26				void *context);
27	const char	*const *names;
28};
29
30#endif /* _LINUX_PCA953X_H */