[linux-block.git] / include / linux / spi / max7301.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef LINUX_SPI_MAX7301_H
#define LINUX_SPI_MAX7301_H

#include <linux/gpio/driver.h>

/*
 * Some registers must be read back to modify.
 * To save time we cache them here in memory
 */
struct max7301 {
	struct mutex	lock;
	u8		port_config[8];	/* field 0 is unused */
	u32		out_level;	/* cached output levels */
	u32		input_pullup_active;
	struct gpio_chip chip;
	struct device *dev;
	int (*write)(struct device *dev, unsigned int reg, unsigned int val);
	int (*read)(struct device *dev, unsigned int reg);
};

struct max7301_platform_data {
	/* number assigned to the first GPIO */
	unsigned	base;
	/*
	 * bitmask controlling the pullup configuration,
	 *
	 * _note_ the 4 lowest bits are unused, because the first 4
	 * ports of the controller are not used, too.
	 */
	u32		input_pullup_active;
};

extern void __max730x_remove(struct device *dev);
extern int __max730x_probe(struct max7301 *ts);
#endif
Commit	Line	Data
b2441318	1	/* SPDX-License-Identifier: GPL-2.0 */
0c36ec31 JB	2	#ifndef LINUX_SPI_MAX7301_H
	3	#define LINUX_SPI_MAX7301_H
	4
e5e26d80	5	#include <linux/gpio/driver.h>
e952805d WS	6
	7	/*
	8	* Some registers must be read back to modify.
	9	* To save time we cache them here in memory
	10	*/
	11	struct max7301 {
	12	struct mutex lock;
	13	u8 port_config[8]; /* field 0 is unused */
	14	u32 out_level; /* cached output levels */
4a22b8a4	15	u32 input_pullup_active;
e952805d WS	16	struct gpio_chip chip;
	17	struct device *dev;
	18	int (write)(struct device dev, unsigned int reg, unsigned int val);
	19	int (read)(struct device dev, unsigned int reg);
	20	};
	21
0c36ec31 JB	22	struct max7301_platform_data {
	23	/* number assigned to the first GPIO */
	24	unsigned base;
4a22b8a4 MKB	25	/*
	26	* bitmask controlling the pullup configuration,
	27	*
	28	* _note_ the 4 lowest bits are unused, because the first 4
	29	* ports of the controller are not used, too.
	30	*/
	31	u32 input_pullup_active;
0c36ec31 JB	32	};
0c36ec31 JB	33
06de2cd7	34	extern void __max730x_remove(struct device *dev);
e952805d	35	extern int __max730x_probe(struct max7301 *ts);
0c36ec31	36	#endif