include/linux/input/ti_am335x_tsc.h

   1 #ifndef __LINUX_TI_AM335X_TSC_H
   2 #define __LINUX_TI_AM335X_TSC_H
   3
   4 /**
   5  * struct tsc_data      Touchscreen wire configuration
   6  * @wires:              Wires refer to application modes
   7  *                      i.e. 4/5/8 wire touchscreen support
   8  *                      on the platform.
   9  * @x_plate_resistance: X plate resistance.
  10  * @steps_to_configure: The sequencer supports a total of
  11  *                      16 programmable steps.
  12  *                      A step configured to read a single
  13  *                      co-ordinate value, can be applied
  14  *                      more number of times for better results.
  15  * @wire_config:        Different EVM's could have a different order
  16  *                      for connecting wires on touchscreen.
  17  *                      We need to provide an 8 bit number where in
  18  *                      the 1st four bits represent the analog lines
  19  *                      and the next 4 bits represent positive/
  20  *                      negative terminal on that input line.
  21  *                      Notations to represent the input lines and
  22  *                      terminals resoectively is as follows:
  23  *                      AIN0 = 0, AIN1 = 1 and so on till AIN7 = 7.
  24  *                      XP  = 0, XN = 1, YP = 2, YN = 3.
  25  *
  26  */
  27
  28 struct tsc_data {
  29         int wires;
  30         int x_plate_resistance;
  31         int steps_to_configure;
  32         int wire_config[10];
  33 };
  34
  35 #endif