1 // SPDX-License-Identifier: GPL-2.0-or-later
34 	__u8 event;  member
61 			.addr = client->addr,  in icn8318_read_touch_data()
66 			.addr = client->addr,  in icn8318_read_touch_data()
73 	return i2c_transfer(client->adapter, msg, 2);  in icn8318_read_touch_data()
76 static inline bool icn8318_touch_active(u8 event)  in icn8318_touch_active()  argument
78 	return (event == ICN8318_EVENT_UPDATE1) ||  in icn8318_touch_active()
79 	       (event == ICN8318_EVENT_UPDATE2);  in icn8318_touch_active()
85 	struct device *dev = &data->client->dev;  in icn8318_irq()
89 	ret = icn8318_read_touch_data(data->client, &touch_data);  in icn8318_irq()
91 		dev_err(dev, "Error reading touch data: %d\n", ret);  in icn8318_irq()
112 		struct icn8318_touch *touch = &touch_data.touches[i];  in icn8318_irq()  local
113 		bool act = icn8318_touch_active(touch->event);  in icn8318_irq()
115 		input_mt_slot(data->input, touch->slot);  in icn8318_irq()
116 		input_mt_report_slot_state(data->input, MT_TOOL_FINGER, act);  in icn8318_irq()
120 		touchscreen_report_pos(data->input, &data->prop,  in icn8318_irq()
121 				       be16_to_cpu(touch->x),  in icn8318_irq()
122 				       be16_to_cpu(touch->y), true);  in icn8318_irq()
125 	input_mt_sync_frame(data->input);  in icn8318_irq()
126 	input_sync(data->input);  in icn8318_irq()
135 	enable_irq(data->client->irq);  in icn8318_start()
136 	gpiod_set_value_cansleep(data->wake_gpio, 1);  in icn8318_start()
145 	disable_irq(data->client->irq);  in icn8318_stop()
146 	i2c_smbus_write_byte_data(data->client, ICN8318_REG_POWER,  in icn8318_stop()
148 	gpiod_set_value_cansleep(data->wake_gpio, 0);  in icn8318_stop()
156 	mutex_lock(&data->input->mutex);  in icn8318_suspend()
157 	if (data->input->users)  in icn8318_suspend()
158 		icn8318_stop(data->input);  in icn8318_suspend()
159 	mutex_unlock(&data->input->mutex);  in icn8318_suspend()
168 	mutex_lock(&data->input->mutex);  in icn8318_resume()
169 	if (data->input->users)  in icn8318_resume()
170 		icn8318_start(data->input);  in icn8318_resume()
171 	mutex_unlock(&data->input->mutex);  in icn8318_resume()
182 	struct device *dev = &client->dev;  in icn8318_probe()
187 	if (!client->irq) {  in icn8318_probe()
189 		return -EINVAL;  in icn8318_probe()
194 		return -ENOMEM;  in icn8318_probe()
196 	data->wake_gpio = devm_gpiod_get(dev, "wake", GPIOD_OUT_LOW);  in icn8318_probe()
197 	if (IS_ERR(data->wake_gpio)) {  in icn8318_probe()
198 		error = PTR_ERR(data->wake_gpio);  in icn8318_probe()
199 		if (error != -EPROBE_DEFER)  in icn8318_probe()
206 		return -ENOMEM;  in icn8318_probe()
208 	input->name = client->name;  in icn8318_probe()
209 	input->id.bustype = BUS_I2C;  in icn8318_probe()
210 	input->open = icn8318_start;  in icn8318_probe()
211 	input->close = icn8318_stop;  in icn8318_probe()
212 	input->dev.parent = dev;  in icn8318_probe()
217 	touchscreen_parse_properties(input, true, &data->prop);  in icn8318_probe()
220 		dev_err(dev, "Error touchscreen-size-x and/or -y missing\n");  in icn8318_probe()
221 		return -EINVAL;  in icn8318_probe()
229 	data->client = client;  in icn8318_probe()
230 	data->input = input;  in icn8318_probe()
233 	error = devm_request_threaded_irq(dev, client->irq, NULL, icn8318_irq,  in icn8318_probe()
234 					  IRQF_ONESHOT, client->name, data);  in icn8318_probe()
241 	icn8318_stop(data->input);  in icn8318_probe()
258 /* This is useless for OF-enabled devices, but it is needed by I2C subsystem */