| /* 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,*/ |
| }; |
