[linux-2.6-block.git] / include / linux / spi / ads7846.h

/* SPDX-License-Identifier: GPL-2.0 */
/* linux/spi/ads7846.h */

struct ads7846_platform_data {
	u16	model;			/* 7843, 7845, 7846, 7873. */
	u16	vref_delay_usecs;	/* 0 for external vref; etc */
	u16	vref_mv;		/* external vref value, milliVolts
					 * ads7846: if 0, use internal vref */
	bool	keep_vref_on;		/* set to keep vref on for differential
					 * measurements as well */
	bool	swap_xy;		/* swap x and y axes */

	/* Settling time of the analog signals; a function of Vcc and the
	 * capacitance on the X/Y drivers.  If set to non-zero, two samples
	 * are taken with settle_delay us apart, and the second one is used.
	 * ~150 uSec with 0.01uF caps.
	 */
	u16	settle_delay_usecs;

	/* If set to non-zero, after samples are taken this delay is applied
	 * and penirq is rechecked, to help avoid false events.  This value
	 * is affected by the material used to build the touch layer.
	 */
	u16	penirq_recheck_delay_usecs;

	u16	x_plate_ohms;
	u16	y_plate_ohms;

	u16	x_min, x_max;
	u16	y_min, y_max;
	u16	pressure_min, pressure_max;

	u16	debounce_max;		/* max number of additional readings
					 * per sample */
	u16	debounce_tol;		/* tolerance used for filtering */
	u16	debounce_rep;		/* additional consecutive good readings
					 * required after the first two */
	int	gpio_pendown_debounce;	/* platform specific debounce time for
					 * the gpio_pendown */
	int	(*get_pendown_state)(void);
	void	(*wait_for_sync)(void);
	bool	wakeup;
	unsigned long irq_flags;
};
Commit	Line	Data
	1	/* SPDX-License-Identifier: GPL-2.0 */
	2	/* linux/spi/ads7846.h */
	3
	4	struct ads7846_platform_data {
	5	u16 model; /* 7843, 7845, 7846, 7873. */
	6	u16 vref_delay_usecs; /* 0 for external vref; etc */
	7	u16 vref_mv; /* external vref value, milliVolts
	8	* ads7846: if 0, use internal vref */
	9	bool keep_vref_on; /* set to keep vref on for differential
	10	* measurements as well */
	11	bool swap_xy; /* swap x and y axes */
	12
	13	/* Settling time of the analog signals; a function of Vcc and the
	14	* capacitance on the X/Y drivers. If set to non-zero, two samples
	15	* are taken with settle_delay us apart, and the second one is used.
	16	* ~150 uSec with 0.01uF caps.
	17	*/
	18	u16 settle_delay_usecs;
	19
	20	/* If set to non-zero, after samples are taken this delay is applied
	21	* and penirq is rechecked, to help avoid false events. This value
	22	* is affected by the material used to build the touch layer.
	23	*/
	24	u16 penirq_recheck_delay_usecs;
	25
	26	u16 x_plate_ohms;
	27	u16 y_plate_ohms;
	28
	29	u16 x_min, x_max;
	30	u16 y_min, y_max;
	31	u16 pressure_min, pressure_max;
	32
	33	u16 debounce_max; /* max number of additional readings
	34	* per sample */
	35	u16 debounce_tol; /* tolerance used for filtering */
	36	u16 debounce_rep; /* additional consecutive good readings
	37	* required after the first two */
	38	int gpio_pendown_debounce; /* platform specific debounce time for
	39	* the gpio_pendown */
	40	int (*get_pendown_state)(void);
	41	void (*wait_for_sync)(void);
	42	bool wakeup;
	43	unsigned long irq_flags;
	44	};
	45