27 #define ST1232_TS_NAME	"st1232-ts"
28 #define ST1633_TS_NAME	"st1633-ts"
66 static int st1232_ts_read_data(struct st1232_ts_data *ts, u8 reg,  in st1232_ts_read_data()  argument
69 	struct i2c_client *client = ts->client;  in st1232_ts_read_data()
80 			.buf	= ts->read_buf,  in st1232_ts_read_data()
92 static int st1232_ts_wait_ready(struct st1232_ts_data *ts)  in st1232_ts_wait_ready()  argument
98 		error = st1232_ts_read_data(ts, REG_STATUS, 1);  in st1232_ts_wait_ready()
100 			switch (ts->read_buf[0]) {  in st1232_ts_wait_ready()
113 static int st1232_ts_read_resolution(struct st1232_ts_data *ts, u16 *max_x,  in st1232_ts_read_resolution()  argument
120 	error = st1232_ts_read_data(ts, REG_XY_RESOLUTION, 3);  in st1232_ts_read_resolution()
124 	buf = ts->read_buf;  in st1232_ts_read_resolution()
132 static int st1232_ts_parse_and_report(struct st1232_ts_data *ts)  in st1232_ts_parse_and_report()  argument
134 	struct input_dev *input = ts->input_dev;  in st1232_ts_parse_and_report()
141 	for (i = 0; i < ts->chip_info->max_fingers; i++) {  in st1232_ts_parse_and_report()
142 		u8 *buf = &ts->read_buf[i * 4];  in st1232_ts_parse_and_report()
149 					       &ts->prop, x, y);  in st1232_ts_parse_and_report()
152 			if (ts->chip_info->have_z)  in st1232_ts_parse_and_report()
153 				z[n_contacts] = ts->read_buf[i + 6];  in st1232_ts_parse_and_report()
161 		if (touch_overlay_process_contact(&ts->touch_overlay_list,  in st1232_ts_parse_and_report()
169 		if (ts->chip_info->have_z)  in st1232_ts_parse_and_report()
173 	touch_overlay_sync_frame(&ts->touch_overlay_list, input);  in st1232_ts_parse_and_report()
182 	struct st1232_ts_data *ts = dev_id;  in st1232_ts_irq_handler()  local
186 	error = st1232_ts_read_data(ts, REG_XY_COORDINATES, ts->read_buf_len);  in st1232_ts_irq_handler()
190 	count = st1232_ts_parse_and_report(ts);  in st1232_ts_irq_handler()
192 		if (ts->low_latency_req.dev) {  in st1232_ts_irq_handler()
193 			dev_pm_qos_remove_request(&ts->low_latency_req);  in st1232_ts_irq_handler()
194 			ts->low_latency_req.dev = NULL;  in st1232_ts_irq_handler()
196 	} else if (!ts->low_latency_req.dev) {  in st1232_ts_irq_handler()
198 		dev_pm_qos_add_ancestor_request(&ts->client->dev,  in st1232_ts_irq_handler()
199 						&ts->low_latency_req,  in st1232_ts_irq_handler()
207 static void st1232_ts_power(struct st1232_ts_data *ts, bool poweron)  in st1232_ts_power()  argument
209 	if (ts->reset_gpio)  in st1232_ts_power()
210 		gpiod_set_value_cansleep(ts->reset_gpio, !poweron);  in st1232_ts_power()
234 	struct st1232_ts_data *ts;  in st1232_ts_probe()  local
257 	ts = devm_kzalloc(&client->dev, sizeof(*ts), GFP_KERNEL);  in st1232_ts_probe()
258 	if (!ts)  in st1232_ts_probe()
261 	ts->chip_info = match;  in st1232_ts_probe()
264 	ts->read_buf_len = ts->chip_info->max_fingers * 4;  in st1232_ts_probe()
265 	ts->read_buf = devm_kzalloc(&client->dev, ts->read_buf_len, GFP_KERNEL);  in st1232_ts_probe()
266 	if (!ts->read_buf)  in st1232_ts_probe()
273 	ts->client = client;  in st1232_ts_probe()
274 	ts->input_dev = input_dev;  in st1232_ts_probe()
276 	ts->reset_gpio = devm_gpiod_get_optional(&client->dev, NULL,  in st1232_ts_probe()
278 	if (IS_ERR(ts->reset_gpio)) {  in st1232_ts_probe()
279 		error = PTR_ERR(ts->reset_gpio);  in st1232_ts_probe()
285 	st1232_ts_power(ts, true);  in st1232_ts_probe()
287 	error = devm_add_action_or_reset(&client->dev, st1232_ts_power_off, ts);  in st1232_ts_probe()
298 	error = st1232_ts_wait_ready(ts);  in st1232_ts_probe()
302 	if (ts->chip_info->have_z)  in st1232_ts_probe()
304 				     ts->chip_info->max_area, 0, 0);  in st1232_ts_probe()
307 	INIT_LIST_HEAD(&ts->touch_overlay_list);  in st1232_ts_probe()
308 	error = touch_overlay_map(&ts->touch_overlay_list, input_dev);  in st1232_ts_probe()
312 	if (touch_overlay_mapped_touchscreen(&ts->touch_overlay_list)) {  in st1232_ts_probe()
314 		touch_overlay_get_touchscreen_abs(&ts->touch_overlay_list,  in st1232_ts_probe()
318 		error = st1232_ts_read_resolution(ts, &max_x, &max_y);  in st1232_ts_probe()
331 	touchscreen_parse_properties(input_dev, true, &ts->prop);  in st1232_ts_probe()
333 	error = input_mt_init_slots(input_dev, ts->chip_info->max_fingers,  in st1232_ts_probe()
344 					  client->name, ts);  in st1232_ts_probe()
350 	error = input_register_device(ts->input_dev);  in st1232_ts_probe()
357 	i2c_set_clientdata(client, ts);  in st1232_ts_probe()
365 	struct st1232_ts_data *ts = i2c_get_clientdata(client);  in st1232_ts_suspend()  local
370 		st1232_ts_power(ts, false);  in st1232_ts_suspend()
378 	struct st1232_ts_data *ts = i2c_get_clientdata(client);  in st1232_ts_resume()  local
381 		st1232_ts_power(ts, true);  in st1232_ts_resume()