| Bryan Wu | 1394f03 | 2007-05-06 14:50:22 -0700 | [diff] [blame] | 1 | /* linux/spi/ad7877.h */ |
| 2 | |
| 3 | /* Touchscreen characteristics vary between boards and models. The |
| 4 | * platform_data for the device's "struct device" holds this information. |
| 5 | * |
| 6 | * It's OK if the min/max values are zero. |
| 7 | */ |
| 8 | struct ad7877_platform_data { |
| 9 | u16 model; /* 7877 */ |
| 10 | u16 vref_delay_usecs; /* 0 for external vref; etc */ |
| 11 | u16 x_plate_ohms; |
| 12 | u16 y_plate_ohms; |
| 13 | |
| 14 | u16 x_min, x_max; |
| 15 | u16 y_min, y_max; |
| 16 | u16 pressure_min, pressure_max; |
| 17 | |
| 18 | u8 stopacq_polarity; /* 1 = Active HIGH, 0 = Active LOW */ |
| 19 | u8 first_conversion_delay; /* 0 = 0.5us, 1 = 128us, 2 = 1ms, 3 = 8ms */ |
| 20 | u8 acquisition_time; /* 0 = 2us, 1 = 4us, 2 = 8us, 3 = 16us */ |
| 21 | u8 averaging; /* 0 = 1, 1 = 4, 2 = 8, 3 = 16 */ |
| 22 | u8 pen_down_acc_interval; /* 0 = covert once, 1 = every 0.5 ms, |
| 23 | 2 = ever 1 ms, 3 = every 8 ms,*/ |
| 24 | }; |