51 static int tps6507x_read_u8(struct tps6507x_ts *tsc, u8 reg, u8 *data)  in tps6507x_read_u8()  argument
53 	return tsc->mfd->read_dev(tsc->mfd, reg, 1, data);  in tps6507x_read_u8()
56 static int tps6507x_write_u8(struct tps6507x_ts *tsc, u8 reg, u8 data)  in tps6507x_write_u8()  argument
58 	return tsc->mfd->write_dev(tsc->mfd, reg, 1, &data);  in tps6507x_write_u8()
61 static s32 tps6507x_adc_conversion(struct tps6507x_ts *tsc,  in tps6507x_adc_conversion()  argument
70 	ret = tps6507x_write_u8(tsc, TPS6507X_REG_TSCMODE, tsc_mode);  in tps6507x_adc_conversion()
72 		dev_err(tsc->dev, "TSC mode read failed\n");  in tps6507x_adc_conversion()
78 	ret = tps6507x_write_u8(tsc, TPS6507X_REG_ADCONFIG,  in tps6507x_adc_conversion()
81 		dev_err(tsc->dev, "ADC config write failed\n");  in tps6507x_adc_conversion()
86 		ret = tps6507x_read_u8(tsc, TPS6507X_REG_ADCONFIG,  in tps6507x_adc_conversion()
89 			dev_err(tsc->dev, "ADC config read failed\n");  in tps6507x_adc_conversion()
94 	ret = tps6507x_read_u8(tsc, TPS6507X_REG_ADRESULT_2, &result);  in tps6507x_adc_conversion()
96 		dev_err(tsc->dev, "ADC result 2 read failed\n");  in tps6507x_adc_conversion()
102 	ret = tps6507x_read_u8(tsc, TPS6507X_REG_ADRESULT_1, &result);  in tps6507x_adc_conversion()
104 		dev_err(tsc->dev, "ADC result 1 read failed\n");  in tps6507x_adc_conversion()
110 	dev_dbg(tsc->dev, "TSC channel %d = 0x%X\n", tsc_mode, *value);  in tps6507x_adc_conversion()
120 static s32 tps6507x_adc_standby(struct tps6507x_ts *tsc)  in tps6507x_adc_standby()  argument
126 	ret = tps6507x_write_u8(tsc,  TPS6507X_REG_ADCONFIG,  in tps6507x_adc_standby()
131 	ret = tps6507x_write_u8(tsc, TPS6507X_REG_TSCMODE,  in tps6507x_adc_standby()
136 	ret = tps6507x_read_u8(tsc, TPS6507X_REG_INT, &val);  in tps6507x_adc_standby()
142 		ret = tps6507x_read_u8(tsc, TPS6507X_REG_INT, &val);  in tps6507x_adc_standby()
153 	struct tps6507x_ts *tsc = poll_dev->private;  in tps6507x_ts_poll()  local
158 	ret = tps6507x_adc_conversion(tsc, TPS6507X_TSCMODE_PRESSURE,  in tps6507x_ts_poll()
159 				      &tsc->tc.pressure);  in tps6507x_ts_poll()
163 	pendown = tsc->tc.pressure > tsc->min_pressure;  in tps6507x_ts_poll()
165 	if (unlikely(!pendown && tsc->pendown)) {  in tps6507x_ts_poll()
166 		dev_dbg(tsc->dev, "UP\n");  in tps6507x_ts_poll()
170 		tsc->pendown = false;  in tps6507x_ts_poll()
175 		if (!tsc->pendown) {  in tps6507x_ts_poll()
176 			dev_dbg(tsc->dev, "DOWN\n");  in tps6507x_ts_poll()
179 			dev_dbg(tsc->dev, "still down\n");  in tps6507x_ts_poll()
181 		ret =  tps6507x_adc_conversion(tsc, TPS6507X_TSCMODE_X_POSITION,  in tps6507x_ts_poll()
182 					       &tsc->tc.x);  in tps6507x_ts_poll()
186 		ret =  tps6507x_adc_conversion(tsc, TPS6507X_TSCMODE_Y_POSITION,  in tps6507x_ts_poll()
187 					       &tsc->tc.y);  in tps6507x_ts_poll()
191 		input_report_abs(input_dev, ABS_X, tsc->tc.x);  in tps6507x_ts_poll()
192 		input_report_abs(input_dev, ABS_Y, tsc->tc.y);  in tps6507x_ts_poll()
193 		input_report_abs(input_dev, ABS_PRESSURE, tsc->tc.pressure);  in tps6507x_ts_poll()
195 		tsc->pendown = true;  in tps6507x_ts_poll()
199 	tps6507x_adc_standby(tsc);  in tps6507x_ts_poll()
207 	struct tps6507x_ts *tsc;  in tps6507x_ts_probe()  local
229 	tsc = kzalloc(sizeof(struct tps6507x_ts), GFP_KERNEL);  in tps6507x_ts_probe()
230 	if (!tsc) {  in tps6507x_ts_probe()
235 	tsc->mfd = tps6507x_dev;  in tps6507x_ts_probe()
236 	tsc->dev = tps6507x_dev->dev;  in tps6507x_ts_probe()
237 	tsc->min_pressure = init_data ?  in tps6507x_ts_probe()
240 	snprintf(tsc->phys, sizeof(tsc->phys),  in tps6507x_ts_probe()
241 		 "%s/input0", dev_name(tsc->dev));  in tps6507x_ts_probe()
245 		dev_err(tsc->dev, "Failed to allocate polled input device.\n");  in tps6507x_ts_probe()
250 	tsc->poll_dev = poll_dev;  in tps6507x_ts_probe()
252 	poll_dev->private = tsc;  in tps6507x_ts_probe()
266 	input_dev->phys = tsc->phys;  in tps6507x_ts_probe()
267 	input_dev->dev.parent = tsc->dev;  in tps6507x_ts_probe()
275 	error = tps6507x_adc_standby(tsc);  in tps6507x_ts_probe()
283 	platform_set_drvdata(pdev, tsc);  in tps6507x_ts_probe()
290 	kfree(tsc);  in tps6507x_ts_probe()
296 	struct tps6507x_ts *tsc = platform_get_drvdata(pdev);  in tps6507x_ts_remove()  local
297 	struct input_polled_dev *poll_dev = tsc->poll_dev;  in tps6507x_ts_remove()
302 	kfree(tsc);  in tps6507x_ts_remove()