1 // SPDX-License-Identifier: GPL-2.0-only
5  * Copyright 2004-2007 Freescale Semiconductor, Inc. All Rights Reserved.
20 #define MC13783_TS_NAME	"mc13783-ts"
38 	struct mc13xxx_ts_platform_data *touch;  member
45 	mc13xxx_irq_ack(priv->mc13xxx, irq);  in mc13783_ts_handler()
53 	schedule_delayed_work(&priv->work, 0);  in mc13783_ts_handler()
69 	struct input_dev *idev = priv->idev;  in mc13783_ts_report_sample()
74 	 * the values are 10-bit wide only, but the two least significant  in mc13783_ts_report_sample()
77 	x0 = priv->sample[0] & 0xfff;  in mc13783_ts_report_sample()
78 	x1 = priv->sample[1] & 0xfff;  in mc13783_ts_report_sample()
79 	x2 = priv->sample[2] & 0xfff;  in mc13783_ts_report_sample()
80 	y0 = priv->sample[3] & 0xfff;  in mc13783_ts_report_sample()
81 	y1 = (priv->sample[0] >> 12) & 0xfff;  in mc13783_ts_report_sample()
82 	y2 = (priv->sample[1] >> 12) & 0xfff;  in mc13783_ts_report_sample()
83 	cr0 = (priv->sample[2] >> 12) & 0xfff;  in mc13783_ts_report_sample()
84 	cr1 = (priv->sample[3] >> 12) & 0xfff;  in mc13783_ts_report_sample()
86 	dev_dbg(&idev->dev,  in mc13783_ts_report_sample()
96 			(x2 - x0 < sample_tolerance &&  in mc13783_ts_report_sample()
97 			 y2 - y0 < sample_tolerance)) {  in mc13783_ts_report_sample()
103 			dev_dbg(&idev->dev, "report (%d, %d, %d)\n",  in mc13783_ts_report_sample()
104 					x1, y1, 0x1000 - cr0);  in mc13783_ts_report_sample()
105 			schedule_delayed_work(&priv->work, HZ / 50);  in mc13783_ts_report_sample()
107 			dev_dbg(&idev->dev, "report release\n");  in mc13783_ts_report_sample()
111 				cr0 ? 0x1000 - cr0 : cr0);  in mc13783_ts_report_sample()
115 		dev_dbg(&idev->dev, "discard event\n");  in mc13783_ts_report_sample()
126 	if (mc13xxx_adc_do_conversion(priv->mc13xxx,  in mc13783_ts_work()
128 				priv->touch->ato, priv->touch->atox,  in mc13783_ts_work()
129 				priv->sample) == 0)  in mc13783_ts_work()
138 	mc13xxx_lock(priv->mc13xxx);  in mc13783_ts_open()
140 	mc13xxx_irq_ack(priv->mc13xxx, MC13XXX_IRQ_TS);  in mc13783_ts_open()
142 	ret = mc13xxx_irq_request(priv->mc13xxx, MC13XXX_IRQ_TS,  in mc13783_ts_open()
147 	ret = mc13xxx_reg_rmw(priv->mc13xxx, MC13XXX_ADC0,  in mc13783_ts_open()
150 		mc13xxx_irq_free(priv->mc13xxx, MC13XXX_IRQ_TS, priv);  in mc13783_ts_open()
152 	mc13xxx_unlock(priv->mc13xxx);  in mc13783_ts_open()
160 	mc13xxx_lock(priv->mc13xxx);  in mc13783_ts_close()
161 	mc13xxx_reg_rmw(priv->mc13xxx, MC13XXX_ADC0,  in mc13783_ts_close()
163 	mc13xxx_irq_free(priv->mc13xxx, MC13XXX_IRQ_TS, priv);  in mc13783_ts_close()
164 	mc13xxx_unlock(priv->mc13xxx);  in mc13783_ts_close()
166 	cancel_delayed_work_sync(&priv->work);  in mc13783_ts_close()
173 	int ret = -ENOMEM;  in mc13783_ts_probe()
180 	INIT_DELAYED_WORK(&priv->work, mc13783_ts_work);  in mc13783_ts_probe()
181 	priv->mc13xxx = dev_get_drvdata(pdev->dev.parent);  in mc13783_ts_probe()
182 	priv->idev = idev;  in mc13783_ts_probe()
183 	priv->touch = dev_get_platdata(&pdev->dev);  in mc13783_ts_probe()
184 	if (!priv->touch) {  in mc13783_ts_probe()
185 		dev_err(&pdev->dev, "missing platform data\n");  in mc13783_ts_probe()
186 		ret = -ENODEV;  in mc13783_ts_probe()
190 	idev->name = MC13783_TS_NAME;  in mc13783_ts_probe()
191 	idev->dev.parent = &pdev->dev;  in mc13783_ts_probe()
193 	idev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);  in mc13783_ts_probe()
194 	idev->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH);  in mc13783_ts_probe()
199 	idev->open = mc13783_ts_open;  in mc13783_ts_probe()
200 	idev->close = mc13783_ts_close;  in mc13783_ts_probe()
204 	ret = input_register_device(priv->idev);  in mc13783_ts_probe()
206 		dev_err(&pdev->dev,  in mc13783_ts_probe()
224 	input_unregister_device(priv->idev);  in mc13783_ts_remove()