64 	int (*check_id)(struct himax_ts_data *ts);
65 	int (*read_events)(struct himax_ts_data *ts, struct himax_event *event,
84 static int himax_bus_enable_burst(struct himax_ts_data *ts)  in himax_bus_enable_burst()  argument
88 	error = regmap_write(ts->regmap, HIMAX_AHB_ADDR_CONTI,  in himax_bus_enable_burst()
93 	error = regmap_write(ts->regmap, HIMAX_AHB_ADDR_INCR4,  in himax_bus_enable_burst()
101 static int himax_bus_read(struct himax_ts_data *ts, u32 address, void *dst,  in himax_bus_read()  argument
107 		error = himax_bus_enable_burst(ts);  in himax_bus_read()
112 	error = regmap_write(ts->regmap, HIMAX_AHB_ADDR_BYTE_0, address);  in himax_bus_read()
116 	error = regmap_write(ts->regmap, HIMAX_AHB_ADDR_ACCESS_DIRECTION,  in himax_bus_read()
122 		error = regmap_noinc_read(ts->regmap, HIMAX_AHB_ADDR_RDATA_BYTE_0,  in himax_bus_read()
125 		error = regmap_read(ts->regmap, HIMAX_AHB_ADDR_RDATA_BYTE_0,  in himax_bus_read()
133 static void himax_reset(struct himax_ts_data *ts)  in himax_reset()  argument
135 	gpiod_set_value_cansleep(ts->gpiod_rst, 1);  in himax_reset()
139 	gpiod_set_value_cansleep(ts->gpiod_rst, 0);  in himax_reset()
148 static int himax_read_product_id(struct himax_ts_data *ts, u32 *product_id)  in himax_read_product_id()  argument
152 	error = himax_bus_read(ts, HIMAX_REG_ADDR_ICID, product_id,  in himax_read_product_id()
161 static int himax_check_product_id(struct himax_ts_data *ts)  in himax_check_product_id()  argument
166 	error = himax_read_product_id(ts, &product_id);  in himax_check_product_id()
170 	dev_dbg(&ts->client->dev, "Product id: %x\n", product_id);  in himax_check_product_id()
172 	if (product_id == ts->chip->id)  in himax_check_product_id()
175 	dev_err(&ts->client->dev, "Unknown product id: %x\n",  in himax_check_product_id()
180 static int himax_input_register(struct himax_ts_data *ts)  in himax_input_register()  argument
184 	ts->input_dev = devm_input_allocate_device(&ts->client->dev);  in himax_input_register()
185 	if (!ts->input_dev) {  in himax_input_register()
186 		dev_err(&ts->client->dev, "Failed to allocate input device\n");  in himax_input_register()
190 	ts->input_dev->name = "Himax Touchscreen";  in himax_input_register()
192 	input_set_capability(ts->input_dev, EV_ABS, ABS_MT_POSITION_X);  in himax_input_register()
193 	input_set_capability(ts->input_dev, EV_ABS, ABS_MT_POSITION_Y);  in himax_input_register()
194 	input_set_abs_params(ts->input_dev, ABS_MT_WIDTH_MAJOR, 0, 200, 0, 0);  in himax_input_register()
195 	input_set_abs_params(ts->input_dev, ABS_MT_TOUCH_MAJOR, 0, 200, 0, 0);  in himax_input_register()
197 	touchscreen_parse_properties(ts->input_dev, true, &ts->props);  in himax_input_register()
199 	error = input_mt_init_slots(ts->input_dev, HIMAX_MAX_POINTS,  in himax_input_register()
202 		dev_err(&ts->client->dev,  in himax_input_register()
207 	error = input_register_device(ts->input_dev);  in himax_input_register()
209 		dev_err(&ts->client->dev,  in himax_input_register()
225 static bool himax_process_event_point(struct himax_ts_data *ts,  in himax_process_event_point()  argument
237 	input_mt_slot(ts->input_dev, point_index);  in himax_process_event_point()
238 	input_mt_report_slot_state(ts->input_dev, MT_TOOL_FINGER, true);  in himax_process_event_point()
239 	touchscreen_report_pos(ts->input_dev, &ts->props, x, y, true);  in himax_process_event_point()
240 	input_report_abs(ts->input_dev, ABS_MT_TOUCH_MAJOR, w);  in himax_process_event_point()
241 	input_report_abs(ts->input_dev, ABS_MT_WIDTH_MAJOR, w);  in himax_process_event_point()
245 static void himax_process_event(struct himax_ts_data *ts,  in himax_process_event()  argument
252 		if (himax_process_event_point(ts, event, i))  in himax_process_event()
256 	input_mt_sync_frame(ts->input_dev);  in himax_process_event()
257 	input_sync(ts->input_dev);  in himax_process_event()
260 static bool himax_verify_checksum(struct himax_ts_data *ts,  in himax_verify_checksum()  argument
271 		dev_err(&ts->client->dev, "Wrong event checksum: %04x\n",  in himax_verify_checksum()
279 static int himax_read_events(struct himax_ts_data *ts,  in himax_read_events()  argument
282 	return regmap_raw_read(ts->regmap, HIMAX_AHB_ADDR_EVENT_STACK, event,  in himax_read_events()
286 static int hx83100a_read_events(struct himax_ts_data *ts,  in hx83100a_read_events()  argument
289 	return himax_bus_read(ts, HX83100A_REG_FW_EVENT_STACK, event, length);  in hx83100a_read_events()
292 static int himax_handle_input(struct himax_ts_data *ts)  in himax_handle_input()  argument
297 	error = ts->chip->read_events(ts, &event, sizeof(event));  in himax_handle_input()
299 		dev_err(&ts->client->dev, "Failed to read input event: %d\n",  in himax_handle_input()
308 	if (himax_verify_checksum(ts, &event))  in himax_handle_input()
309 		himax_process_event(ts, &event);  in himax_handle_input()
317 	struct himax_ts_data *ts = dev_id;  in himax_irq_handler()  local
319 	error = himax_handle_input(ts);  in himax_irq_handler()
330 	struct himax_ts_data *ts;  in himax_probe()  local
337 	ts = devm_kzalloc(dev, sizeof(*ts), GFP_KERNEL);  in himax_probe()
338 	if (!ts)  in himax_probe()
341 	i2c_set_clientdata(client, ts);  in himax_probe()
342 	ts->client = client;  in himax_probe()
343 	ts->chip = i2c_get_match_data(client);  in himax_probe()
345 	ts->regmap = devm_regmap_init_i2c(client, &himax_regmap_config);  in himax_probe()
346 	error = PTR_ERR_OR_ZERO(ts->regmap);  in himax_probe()
352 	ts->gpiod_rst = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH);  in himax_probe()
353 	error = PTR_ERR_OR_ZERO(ts->gpiod_rst);  in himax_probe()
359 	himax_reset(ts);  in himax_probe()
361 	if (ts->chip->check_id) {  in himax_probe()
362 		error = himax_check_product_id(ts);  in himax_probe()
367 	error = himax_input_register(ts);  in himax_probe()
373 					  client->name, ts);  in himax_probe()
382 	struct himax_ts_data *ts = dev_get_drvdata(dev);  in himax_suspend()  local
384 	disable_irq(ts->client->irq);  in himax_suspend()
390 	struct himax_ts_data *ts = dev_get_drvdata(dev);  in himax_resume()  local
392 	enable_irq(ts->client->irq);  in himax_resume()
428 		.name = "Himax-hx83112b-TS",