50 static int tps6507x_read_u8(struct tps6507x_ts *tsc, u8 reg, u8 *data)  in tps6507x_read_u8()  argument
52 	return tsc->mfd->read_dev(tsc->mfd, reg, 1, data);  in tps6507x_read_u8()
55 static int tps6507x_write_u8(struct tps6507x_ts *tsc, u8 reg, u8 data)  in tps6507x_write_u8()  argument
57 	return tsc->mfd->write_dev(tsc->mfd, reg, 1, &data);  in tps6507x_write_u8()
60 static s32 tps6507x_adc_conversion(struct tps6507x_ts *tsc,  in tps6507x_adc_conversion()  argument
69 	ret = tps6507x_write_u8(tsc, TPS6507X_REG_TSCMODE, tsc_mode);  in tps6507x_adc_conversion()
71 		dev_err(tsc->dev, "TSC mode read failed\n");  in tps6507x_adc_conversion()
77 	ret = tps6507x_write_u8(tsc, TPS6507X_REG_ADCONFIG,  in tps6507x_adc_conversion()
80 		dev_err(tsc->dev, "ADC config write failed\n");  in tps6507x_adc_conversion()
85 		ret = tps6507x_read_u8(tsc, TPS6507X_REG_ADCONFIG,  in tps6507x_adc_conversion()
88 			dev_err(tsc->dev, "ADC config read failed\n");  in tps6507x_adc_conversion()
93 	ret = tps6507x_read_u8(tsc, TPS6507X_REG_ADRESULT_2, &result);  in tps6507x_adc_conversion()
95 		dev_err(tsc->dev, "ADC result 2 read failed\n");  in tps6507x_adc_conversion()
101 	ret = tps6507x_read_u8(tsc, TPS6507X_REG_ADRESULT_1, &result);  in tps6507x_adc_conversion()
103 		dev_err(tsc->dev, "ADC result 1 read failed\n");  in tps6507x_adc_conversion()
109 	dev_dbg(tsc->dev, "TSC channel %d = 0x%X\n", tsc_mode, *value);  in tps6507x_adc_conversion()
119 static s32 tps6507x_adc_standby(struct tps6507x_ts *tsc)  in tps6507x_adc_standby()  argument
125 	ret = tps6507x_write_u8(tsc,  TPS6507X_REG_ADCONFIG,  in tps6507x_adc_standby()
130 	ret = tps6507x_write_u8(tsc, TPS6507X_REG_TSCMODE,  in tps6507x_adc_standby()
135 	ret = tps6507x_read_u8(tsc, TPS6507X_REG_INT, &val);  in tps6507x_adc_standby()
141 		ret = tps6507x_read_u8(tsc, TPS6507X_REG_INT, &val);  in tps6507x_adc_standby()
152 	struct tps6507x_ts *tsc = input_get_drvdata(input_dev);  in tps6507x_ts_poll()  local
156 	ret = tps6507x_adc_conversion(tsc, TPS6507X_TSCMODE_PRESSURE,  in tps6507x_ts_poll()
157 				      &tsc->tc.pressure);  in tps6507x_ts_poll()
161 	pendown = tsc->tc.pressure > tsc->min_pressure;  in tps6507x_ts_poll()
163 	if (unlikely(!pendown && tsc->pendown)) {  in tps6507x_ts_poll()
164 		dev_dbg(tsc->dev, "UP\n");  in tps6507x_ts_poll()
168 		tsc->pendown = false;  in tps6507x_ts_poll()
173 		if (!tsc->pendown) {  in tps6507x_ts_poll()
174 			dev_dbg(tsc->dev, "DOWN\n");  in tps6507x_ts_poll()
177 			dev_dbg(tsc->dev, "still down\n");  in tps6507x_ts_poll()
179 		ret =  tps6507x_adc_conversion(tsc, TPS6507X_TSCMODE_X_POSITION,  in tps6507x_ts_poll()
180 					       &tsc->tc.x);  in tps6507x_ts_poll()
184 		ret =  tps6507x_adc_conversion(tsc, TPS6507X_TSCMODE_Y_POSITION,  in tps6507x_ts_poll()
185 					       &tsc->tc.y);  in tps6507x_ts_poll()
189 		input_report_abs(input_dev, ABS_X, tsc->tc.x);  in tps6507x_ts_poll()
190 		input_report_abs(input_dev, ABS_Y, tsc->tc.y);  in tps6507x_ts_poll()
191 		input_report_abs(input_dev, ABS_PRESSURE, tsc->tc.pressure);  in tps6507x_ts_poll()
193 		tsc->pendown = true;  in tps6507x_ts_poll()
197 	tps6507x_adc_standby(tsc);  in tps6507x_ts_poll()
205 	struct tps6507x_ts *tsc;  in tps6507x_ts_probe()  local
226 	tsc = devm_kzalloc(&pdev->dev, sizeof(struct tps6507x_ts), GFP_KERNEL);  in tps6507x_ts_probe()
227 	if (!tsc) {  in tps6507x_ts_probe()
232 	tsc->mfd = tps6507x_dev;  in tps6507x_ts_probe()
233 	tsc->dev = tps6507x_dev->dev;  in tps6507x_ts_probe()
234 	tsc->min_pressure = init_data ?  in tps6507x_ts_probe()
237 	snprintf(tsc->phys, sizeof(tsc->phys),  in tps6507x_ts_probe()
238 		 "%s/input0", dev_name(tsc->dev));  in tps6507x_ts_probe()
242 		dev_err(tsc->dev, "Failed to allocate polled input device.\n");  in tps6507x_ts_probe()
246 	tsc->input = input_dev;  in tps6507x_ts_probe()
247 	input_set_drvdata(input_dev, tsc);  in tps6507x_ts_probe()
255 	input_dev->phys = tsc->phys;  in tps6507x_ts_probe()
256 	input_dev->dev.parent = tsc->dev;  in tps6507x_ts_probe()
264 	error = tps6507x_adc_standby(tsc);  in tps6507x_ts_probe()