51 static int tps6507x_read_u8(struct tps6507x_ts *tsc, u8 reg, u8 *data)  in tps6507x_read_u8()  argument
55 	err = tsc->mfd->read_dev(tsc->mfd, reg, 1, data);  in tps6507x_read_u8()
63 static int tps6507x_write_u8(struct tps6507x_ts *tsc, u8 reg, u8 data)  in tps6507x_write_u8()  argument
65 	return tsc->mfd->write_dev(tsc->mfd, reg, 1, &data);  in tps6507x_write_u8()
68 static s32 tps6507x_adc_conversion(struct tps6507x_ts *tsc,  in tps6507x_adc_conversion()  argument
77 	ret = tps6507x_write_u8(tsc, TPS6507X_REG_TSCMODE, tsc_mode);  in tps6507x_adc_conversion()
79 		dev_err(tsc->dev, "TSC mode read failed\n");  in tps6507x_adc_conversion()
85 	ret = tps6507x_write_u8(tsc, TPS6507X_REG_ADCONFIG,  in tps6507x_adc_conversion()
88 		dev_err(tsc->dev, "ADC config write failed\n");  in tps6507x_adc_conversion()
93 		ret = tps6507x_read_u8(tsc, TPS6507X_REG_ADCONFIG,  in tps6507x_adc_conversion()
96 			dev_err(tsc->dev, "ADC config read failed\n");  in tps6507x_adc_conversion()
101 	ret = tps6507x_read_u8(tsc, TPS6507X_REG_ADRESULT_2, &result);  in tps6507x_adc_conversion()
103 		dev_err(tsc->dev, "ADC result 2 read failed\n");  in tps6507x_adc_conversion()
109 	ret = tps6507x_read_u8(tsc, TPS6507X_REG_ADRESULT_1, &result);  in tps6507x_adc_conversion()
111 		dev_err(tsc->dev, "ADC result 1 read failed\n");  in tps6507x_adc_conversion()
117 	dev_dbg(tsc->dev, "TSC channel %d = 0x%X\n", tsc_mode, *value);  in tps6507x_adc_conversion()
127 static s32 tps6507x_adc_standby(struct tps6507x_ts *tsc)  in tps6507x_adc_standby()  argument
133 	ret = tps6507x_write_u8(tsc,  TPS6507X_REG_ADCONFIG,  in tps6507x_adc_standby()
138 	ret = tps6507x_write_u8(tsc, TPS6507X_REG_TSCMODE,  in tps6507x_adc_standby()
143 	ret = tps6507x_read_u8(tsc, TPS6507X_REG_INT, &val);  in tps6507x_adc_standby()
149 		ret = tps6507x_read_u8(tsc, TPS6507X_REG_INT, &val);  in tps6507x_adc_standby()
160 	struct tps6507x_ts *tsc = poll_dev->private;  in tps6507x_ts_poll()  local
165 	ret = tps6507x_adc_conversion(tsc, TPS6507X_TSCMODE_PRESSURE,  in tps6507x_ts_poll()
166 				      &tsc->tc.pressure);  in tps6507x_ts_poll()
170 	pendown = tsc->tc.pressure > tsc->min_pressure;  in tps6507x_ts_poll()
172 	if (unlikely(!pendown && tsc->pendown)) {  in tps6507x_ts_poll()
173 		dev_dbg(tsc->dev, "UP\n");  in tps6507x_ts_poll()
177 		tsc->pendown = false;  in tps6507x_ts_poll()
182 		if (!tsc->pendown) {  in tps6507x_ts_poll()
183 			dev_dbg(tsc->dev, "DOWN\n");  in tps6507x_ts_poll()
186 			dev_dbg(tsc->dev, "still down\n");  in tps6507x_ts_poll()
188 		ret =  tps6507x_adc_conversion(tsc, TPS6507X_TSCMODE_X_POSITION,  in tps6507x_ts_poll()
189 					       &tsc->tc.x);  in tps6507x_ts_poll()
193 		ret =  tps6507x_adc_conversion(tsc, TPS6507X_TSCMODE_Y_POSITION,  in tps6507x_ts_poll()
194 					       &tsc->tc.y);  in tps6507x_ts_poll()
198 		input_report_abs(input_dev, ABS_X, tsc->tc.x);  in tps6507x_ts_poll()
199 		input_report_abs(input_dev, ABS_Y, tsc->tc.y);  in tps6507x_ts_poll()
200 		input_report_abs(input_dev, ABS_PRESSURE, tsc->tc.pressure);  in tps6507x_ts_poll()
202 		tsc->pendown = true;  in tps6507x_ts_poll()
206 	tps6507x_adc_standby(tsc);  in tps6507x_ts_poll()
214 	struct tps6507x_ts *tsc;  in tps6507x_ts_probe()  local
236 	tsc = kzalloc(sizeof(struct tps6507x_ts), GFP_KERNEL);  in tps6507x_ts_probe()
237 	if (!tsc) {  in tps6507x_ts_probe()
242 	tsc->mfd = tps6507x_dev;  in tps6507x_ts_probe()
243 	tsc->dev = tps6507x_dev->dev;  in tps6507x_ts_probe()
244 	tsc->min_pressure = init_data ?  in tps6507x_ts_probe()
247 	snprintf(tsc->phys, sizeof(tsc->phys),  in tps6507x_ts_probe()
248 		 "%s/input0", dev_name(tsc->dev));  in tps6507x_ts_probe()
252 		dev_err(tsc->dev, "Failed to allocate polled input device.\n");  in tps6507x_ts_probe()
257 	tsc->poll_dev = poll_dev;  in tps6507x_ts_probe()
259 	poll_dev->private = tsc;  in tps6507x_ts_probe()
273 	input_dev->phys = tsc->phys;  in tps6507x_ts_probe()
274 	input_dev->dev.parent = tsc->dev;  in tps6507x_ts_probe()
282 	error = tps6507x_adc_standby(tsc);  in tps6507x_ts_probe()
290 	platform_set_drvdata(pdev, tsc);  in tps6507x_ts_probe()
297 	kfree(tsc);  in tps6507x_ts_probe()
303 	struct tps6507x_ts *tsc = platform_get_drvdata(pdev);  in tps6507x_ts_remove()  local
304 	struct input_polled_dev *poll_dev = tsc->poll_dev;  in tps6507x_ts_remove()
309 	kfree(tsc);  in tps6507x_ts_remove()