| 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
|---|
| 2 | /* linux/spi/ad7877.h */ |
|---|
| 3 | |
|---|
| 4 | /* Touchscreen characteristics vary between boards and models. The |
|---|
| 5 | * platform_data for the device's "struct device" holds this information. |
|---|
| 6 | * |
|---|
| 7 | * It's OK if the min/max values are zero. |
|---|
| 8 | */ |
|---|
| 9 | struct ad7877_platform_data { |
|---|
| 10 | u16 model; /* 7877 */ |
|---|
| 11 | u16 vref_delay_usecs; /* 0 for external vref; etc */ |
|---|
| 12 | u16 x_plate_ohms; |
|---|
| 13 | u16 y_plate_ohms; |
|---|
| 14 | |
|---|
| 15 | u16 x_min, x_max; |
|---|
| 16 | u16 y_min, y_max; |
|---|
| 17 | u16 pressure_min, pressure_max; |
|---|
| 18 | |
|---|
| 19 | u8 stopacq_polarity; /* 1 = Active HIGH, 0 = Active LOW */ |
|---|
| 20 | u8 first_conversion_delay; /* 0 = 0.5us, 1 = 128us, 2 = 1ms, 3 = 8ms */ |
|---|
| 21 | u8 acquisition_time; /* 0 = 2us, 1 = 4us, 2 = 8us, 3 = 16us */ |
|---|
| 22 | u8 averaging; /* 0 = 1, 1 = 4, 2 = 8, 3 = 16 */ |
|---|
| 23 | u8 pen_down_acc_interval; /* 0 = covert once, 1 = every 0.5 ms, |
|---|
| 24 | 2 = ever 1 ms, 3 = every 8 ms,*/ |
|---|
| 25 | }; |
|---|
| 26 | |
|---|
