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1394f032 BW |
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 | }; |