input/touchscreen/resistive-adc-touch.c

72 		unsigned int Rt;
75 			Rt = z2;
76 			Rt -= z1;
77 			Rt *= st->x_plate_ohms;
78 			Rt = DIV_ROUND_CLOSEST(Rt, 16);
79 			Rt *= x;
80 			Rt /= z1;
81 			Rt = DIV_ROUND_CLOSEST(Rt, 256);
83 			 * On increased pressure the resistance (Rt) is
87 			if (Rt < GRTS_DEFAULT_PRESSURE_MAX)
88 				press = GRTS_DEFAULT_PRESSURE_MAX - Rt;