Commit | Line | Data |
---|---|---|
b4be468c MH |
1 | /* linux/spi/ad7879.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 ad7879_platform_data { | |
9 | u16 model; /* 7879 */ | |
10 | u16 x_plate_ohms; | |
11 | u16 x_min, x_max; | |
12 | u16 y_min, y_max; | |
13 | u16 pressure_min, pressure_max; | |
14 | ||
15 | /* [0..255] 0=OFF Starts at 1=550us and goes | |
16 | * all the way to 9.440ms in steps of 35us. | |
17 | */ | |
18 | u8 pen_down_acc_interval; | |
19 | /* [0..15] Starts at 0=128us and goes all the | |
20 | * way to 4.096ms in steps of 128us. | |
21 | */ | |
22 | u8 first_conversion_delay; | |
23 | /* [0..3] 0 = 2us, 1 = 4us, 2 = 8us, 3 = 16us */ | |
24 | u8 acquisition_time; | |
25 | /* [0..3] Average X middle samples 0 = 2, 1 = 4, 2 = 8, 3 = 16 */ | |
26 | u8 averaging; | |
27 | /* [0..3] Perform X measurements 0 = OFF, | |
28 | * 1 = 4, 2 = 8, 3 = 16 (median > averaging) | |
29 | */ | |
30 | u8 median; | |
31 | /* 1 = AUX/VBAT/GPIO set to GPIO Output */ | |
32 | u8 gpio_output; | |
33 | /* Initial GPIO pin state (valid if gpio_output = 1) */ | |
34 | u8 gpio_default; | |
35 | }; |