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 46