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- /* SPDX-License-Identifier: GPL-2.0 */
- /* linux/spi/ad7877.h */
- /* Touchscreen characteristics vary between boards and models. The
- * platform_data for the device's "struct device" holds this information.
- *
- * It's OK if the min/max values are zero.
- */
- struct ad7877_platform_data {
- u16 model; /* 7877 */
- u16 vref_delay_usecs; /* 0 for external vref; etc */
- u16 x_plate_ohms;
- u16 y_plate_ohms;
- u16 x_min, x_max;
- u16 y_min, y_max;
- u16 pressure_min, pressure_max;
- u8 stopacq_polarity; /* 1 = Active HIGH, 0 = Active LOW */
- u8 first_conversion_delay; /* 0 = 0.5us, 1 = 128us, 2 = 1ms, 3 = 8ms */
- u8 acquisition_time; /* 0 = 2us, 1 = 4us, 2 = 8us, 3 = 16us */
- u8 averaging; /* 0 = 1, 1 = 4, 2 = 8, 3 = 16 */
- u8 pen_down_acc_interval; /* 0 = covert once, 1 = every 0.5 ms,
- 2 = ever 1 ms, 3 = every 8 ms,*/
- };
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