64 static int st1232_ts_read_data(struct st1232_ts_data *ts, u8 reg,  in st1232_ts_read_data()  argument
67 	struct i2c_client *client = ts->client;  in st1232_ts_read_data()
78 			.buf	= ts->read_buf,  in st1232_ts_read_data()
90 static int st1232_ts_wait_ready(struct st1232_ts_data *ts)  in st1232_ts_wait_ready()  argument
96 		error = st1232_ts_read_data(ts, REG_STATUS, 1);  in st1232_ts_wait_ready()
98 			switch (ts->read_buf[0]) {  in st1232_ts_wait_ready()
111 static int st1232_ts_read_resolution(struct st1232_ts_data *ts, u16 *max_x,  in st1232_ts_read_resolution()  argument
118 	error = st1232_ts_read_data(ts, REG_XY_RESOLUTION, 3);  in st1232_ts_read_resolution()
122 	buf = ts->read_buf;  in st1232_ts_read_resolution()
130 static int st1232_ts_parse_and_report(struct st1232_ts_data *ts)  in st1232_ts_parse_and_report()  argument
132 	struct input_dev *input = ts->input_dev;  in st1232_ts_parse_and_report()
139 	for (i = 0; i < ts->chip_info->max_fingers; i++) {  in st1232_ts_parse_and_report()
140 		u8 *buf = &ts->read_buf[i * 4];  in st1232_ts_parse_and_report()
147 					       &ts->prop, x, y);  in st1232_ts_parse_and_report()
150 			if (ts->chip_info->have_z)  in st1232_ts_parse_and_report()
151 				z[n_contacts] = ts->read_buf[i + 6];  in st1232_ts_parse_and_report()
163 		if (ts->chip_info->have_z)  in st1232_ts_parse_and_report()
175 	struct st1232_ts_data *ts = dev_id;  in st1232_ts_irq_handler()  local
179 	error = st1232_ts_read_data(ts, REG_XY_COORDINATES, ts->read_buf_len);  in st1232_ts_irq_handler()
183 	count = st1232_ts_parse_and_report(ts);  in st1232_ts_irq_handler()
185 		if (ts->low_latency_req.dev) {  in st1232_ts_irq_handler()
186 			dev_pm_qos_remove_request(&ts->low_latency_req);  in st1232_ts_irq_handler()
187 			ts->low_latency_req.dev = NULL;  in st1232_ts_irq_handler()
189 	} else if (!ts->low_latency_req.dev) {  in st1232_ts_irq_handler()
191 		dev_pm_qos_add_ancestor_request(&ts->client->dev,  in st1232_ts_irq_handler()
192 						&ts->low_latency_req,  in st1232_ts_irq_handler()
200 static void st1232_ts_power(struct st1232_ts_data *ts, bool poweron)  in st1232_ts_power()  argument
202 	if (ts->reset_gpio)  in st1232_ts_power()
203 		gpiod_set_value_cansleep(ts->reset_gpio, !poweron);  in st1232_ts_power()
227 	struct st1232_ts_data *ts;  in st1232_ts_probe()  local
250 	ts = devm_kzalloc(&client->dev, sizeof(*ts), GFP_KERNEL);  in st1232_ts_probe()
251 	if (!ts)  in st1232_ts_probe()
254 	ts->chip_info = match;  in st1232_ts_probe()
257 	ts->read_buf_len = ts->chip_info->max_fingers * 4;  in st1232_ts_probe()
258 	ts->read_buf = devm_kzalloc(&client->dev, ts->read_buf_len, GFP_KERNEL);  in st1232_ts_probe()
259 	if (!ts->read_buf)  in st1232_ts_probe()
266 	ts->client = client;  in st1232_ts_probe()
267 	ts->input_dev = input_dev;  in st1232_ts_probe()
269 	ts->reset_gpio = devm_gpiod_get_optional(&client->dev, NULL,  in st1232_ts_probe()
271 	if (IS_ERR(ts->reset_gpio)) {  in st1232_ts_probe()
272 		error = PTR_ERR(ts->reset_gpio);  in st1232_ts_probe()
278 	st1232_ts_power(ts, true);  in st1232_ts_probe()
280 	error = devm_add_action_or_reset(&client->dev, st1232_ts_power_off, ts);  in st1232_ts_probe()
291 	error = st1232_ts_wait_ready(ts);  in st1232_ts_probe()
296 	error = st1232_ts_read_resolution(ts, &max_x, &max_y);  in st1232_ts_probe()
303 	if (ts->chip_info->have_z)  in st1232_ts_probe()
305 				     ts->chip_info->max_area, 0, 0);  in st1232_ts_probe()
312 	touchscreen_parse_properties(input_dev, true, &ts->prop);  in st1232_ts_probe()
314 	error = input_mt_init_slots(input_dev, ts->chip_info->max_fingers,  in st1232_ts_probe()
325 					  client->name, ts);  in st1232_ts_probe()
331 	error = input_register_device(ts->input_dev);  in st1232_ts_probe()
338 	i2c_set_clientdata(client, ts);  in st1232_ts_probe()
346 	struct st1232_ts_data *ts = i2c_get_clientdata(client);  in st1232_ts_suspend()  local
351 		st1232_ts_power(ts, false);  in st1232_ts_suspend()
359 	struct st1232_ts_data *ts = i2c_get_clientdata(client);  in st1232_ts_resume()  local
362 		st1232_ts_power(ts, true);  in st1232_ts_resume()