1/* SPDX-License-Identifier: GPL-2.0 */
2/* linux/spi/ads7846.h */
3
4struct 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
46