Function prototype or declaration at include/linux/input/touchscreen.h, line 20 References: drivers/input/touchscreen/ad7879.c, line 567 drivers/input/touchscreen/ads7846.c, line 1382 drivers/input/touchscreen/bu21029_ts.c, line 400 drivers/input/touchscreen/chipone_icn8318.c, line 217 drivers/input/touchscreen/cyttsp_core.c, line 646 drivers/input/touchscreen/edt-ft5x06.c, line 1178 drivers/input/touchscreen/eeti_ts.c, line 196 drivers/input/touchscreen/ektf2127.c, line 273 drivers/input/touchscreen/exc3000.c, line 173 drivers/input/touchscreen/goodix.c, line 1096 drivers/input/touchscreen/hideep.c, line 801 drivers/input/touchscreen/ili210x.c, line 440 drivers/input/touchscreen/iqs5xx.c, line 509 drivers/input/touchscreen/mms114.c, line 459 drivers/input/touchscreen/of_touchscreen.c, line 64 drivers/input/touchscreen/of_touchscreen.c, line 145 drivers/input/touchscreen/pixcir_i2c_ts.c, line 501 drivers/input/touchscreen/raspberrypi-ts.c, line 185 drivers/input/touchscreen/resistive-adc-touch.c, line 156 drivers/input/touchscreen/s6sy761.c, line 444 drivers/input/touchscreen/silead.c, line 98 drivers/input/touchscreen/st1232.c, line 251 drivers/input/touchscreen/stmfts.c, line 665 drivers/input/touchscreen/tsc200x-core.c, line 536