28 			psmouse_printk(KERN_DEBUG, psmouse,		\
35 static int synaptics_send_cmd(struct psmouse *psmouse, unsigned char c,  in synaptics_send_cmd()  argument
38 	if (ps2_sliced_command(&psmouse->ps2dev, c) ||  in synaptics_send_cmd()
39 	    ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETINFO)) {  in synaptics_send_cmd()
40 		psmouse_err(psmouse, "%s query 0x%02x failed.\n", __func__, c);  in synaptics_send_cmd()
50 static int elantech_send_cmd(struct psmouse *psmouse, unsigned char c,  in elantech_send_cmd()  argument
53 	struct ps2dev *ps2dev = &psmouse->ps2dev;  in elantech_send_cmd()
58 		psmouse_err(psmouse, "%s query 0x%02x failed.\n", __func__, c);  in elantech_send_cmd()
68 static int elantech_ps2_command(struct psmouse *psmouse,  in elantech_ps2_command()  argument
71 	struct ps2dev *ps2dev = &psmouse->ps2dev;  in elantech_ps2_command()
72 	struct elantech_data *etd = psmouse->private;  in elantech_ps2_command()
87 		psmouse_err(psmouse, "ps2 command 0x%02x failed.\n", command);  in elantech_ps2_command()
95 static int elantech_read_reg(struct psmouse *psmouse, unsigned char reg,  in elantech_read_reg()  argument
98 	struct elantech_data *etd = psmouse->private;  in elantech_read_reg()
110 		if (ps2_sliced_command(&psmouse->ps2dev, ETP_REGISTER_READ) ||  in elantech_read_reg()
111 		    ps2_sliced_command(&psmouse->ps2dev, reg) ||  in elantech_read_reg()
112 		    ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETINFO)) {  in elantech_read_reg()
118 		if (elantech_ps2_command(psmouse,  NULL, ETP_PS2_CUSTOM_COMMAND) ||  in elantech_read_reg()
119 		    elantech_ps2_command(psmouse,  NULL, ETP_REGISTER_READ) ||  in elantech_read_reg()
120 		    elantech_ps2_command(psmouse,  NULL, ETP_PS2_CUSTOM_COMMAND) ||  in elantech_read_reg()
121 		    elantech_ps2_command(psmouse,  NULL, reg) ||  in elantech_read_reg()
122 		    elantech_ps2_command(psmouse, param, PSMOUSE_CMD_GETINFO)) {  in elantech_read_reg()
128 		if (elantech_ps2_command(psmouse, NULL, ETP_PS2_CUSTOM_COMMAND) ||  in elantech_read_reg()
129 		    elantech_ps2_command(psmouse, NULL, ETP_REGISTER_READWRITE) ||  in elantech_read_reg()
130 		    elantech_ps2_command(psmouse, NULL, ETP_PS2_CUSTOM_COMMAND) ||  in elantech_read_reg()
131 		    elantech_ps2_command(psmouse, NULL, reg) ||  in elantech_read_reg()
132 		    elantech_ps2_command(psmouse, param, PSMOUSE_CMD_GETINFO)) {  in elantech_read_reg()
139 		psmouse_err(psmouse, "failed to read register 0x%02x.\n", reg);  in elantech_read_reg()
151 static int elantech_write_reg(struct psmouse *psmouse, unsigned char reg,  in elantech_write_reg()  argument
154 	struct elantech_data *etd = psmouse->private;  in elantech_write_reg()
165 		if (ps2_sliced_command(&psmouse->ps2dev, ETP_REGISTER_WRITE) ||  in elantech_write_reg()
166 		    ps2_sliced_command(&psmouse->ps2dev, reg) ||  in elantech_write_reg()
167 		    ps2_sliced_command(&psmouse->ps2dev, val) ||  in elantech_write_reg()
168 		    ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11)) {  in elantech_write_reg()
174 		if (elantech_ps2_command(psmouse, NULL, ETP_PS2_CUSTOM_COMMAND) ||  in elantech_write_reg()
175 		    elantech_ps2_command(psmouse, NULL, ETP_REGISTER_WRITE) ||  in elantech_write_reg()
176 		    elantech_ps2_command(psmouse, NULL, ETP_PS2_CUSTOM_COMMAND) ||  in elantech_write_reg()
177 		    elantech_ps2_command(psmouse, NULL, reg) ||  in elantech_write_reg()
178 		    elantech_ps2_command(psmouse, NULL, ETP_PS2_CUSTOM_COMMAND) ||  in elantech_write_reg()
179 		    elantech_ps2_command(psmouse, NULL, val) ||  in elantech_write_reg()
180 		    elantech_ps2_command(psmouse, NULL, PSMOUSE_CMD_SETSCALE11)) {  in elantech_write_reg()
186 		if (elantech_ps2_command(psmouse, NULL, ETP_PS2_CUSTOM_COMMAND) ||  in elantech_write_reg()
187 		    elantech_ps2_command(psmouse, NULL, ETP_REGISTER_READWRITE) ||  in elantech_write_reg()
188 		    elantech_ps2_command(psmouse, NULL, ETP_PS2_CUSTOM_COMMAND) ||  in elantech_write_reg()
189 		    elantech_ps2_command(psmouse, NULL, reg) ||  in elantech_write_reg()
190 		    elantech_ps2_command(psmouse, NULL, ETP_PS2_CUSTOM_COMMAND) ||  in elantech_write_reg()
191 		    elantech_ps2_command(psmouse, NULL, val) ||  in elantech_write_reg()
192 		    elantech_ps2_command(psmouse, NULL, PSMOUSE_CMD_SETSCALE11)) {  in elantech_write_reg()
198 		if (elantech_ps2_command(psmouse, NULL, ETP_PS2_CUSTOM_COMMAND) ||  in elantech_write_reg()
199 		    elantech_ps2_command(psmouse, NULL, ETP_REGISTER_READWRITE) ||  in elantech_write_reg()
200 		    elantech_ps2_command(psmouse, NULL, ETP_PS2_CUSTOM_COMMAND) ||  in elantech_write_reg()
201 		    elantech_ps2_command(psmouse, NULL, reg) ||  in elantech_write_reg()
202 		    elantech_ps2_command(psmouse, NULL, ETP_PS2_CUSTOM_COMMAND) ||  in elantech_write_reg()
203 		    elantech_ps2_command(psmouse, NULL, ETP_REGISTER_READWRITE) ||  in elantech_write_reg()
204 		    elantech_ps2_command(psmouse, NULL, ETP_PS2_CUSTOM_COMMAND) ||  in elantech_write_reg()
205 		    elantech_ps2_command(psmouse, NULL, val) ||  in elantech_write_reg()
206 		    elantech_ps2_command(psmouse, NULL, PSMOUSE_CMD_SETSCALE11)) {  in elantech_write_reg()
213 		psmouse_err(psmouse,  in elantech_write_reg()
223 static void elantech_packet_dump(struct psmouse *psmouse)  in elantech_packet_dump()  argument
225 	psmouse_printk(KERN_DEBUG, psmouse, "PS/2 packet [%*ph]\n",  in elantech_packet_dump()
226 		       psmouse->pktsize, psmouse->packet);  in elantech_packet_dump()
279 static void elantech_report_absolute_v1(struct psmouse *psmouse)  in elantech_report_absolute_v1()  argument
281 	struct input_dev *dev = psmouse->dev;  in elantech_report_absolute_v1()
282 	struct elantech_data *etd = psmouse->private;  in elantech_report_absolute_v1()
283 	unsigned char *packet = psmouse->packet;  in elantech_report_absolute_v1()
367 static void elantech_report_absolute_v2(struct psmouse *psmouse)  in elantech_report_absolute_v2()  argument
369 	struct elantech_data *etd = psmouse->private;  in elantech_report_absolute_v2()
370 	struct input_dev *dev = psmouse->dev;  in elantech_report_absolute_v2()
371 	unsigned char *packet = psmouse->packet;  in elantech_report_absolute_v2()
448 static void elantech_report_trackpoint(struct psmouse *psmouse,  in elantech_report_trackpoint()  argument
466 	struct elantech_data *etd = psmouse->private;  in elantech_report_trackpoint()
468 	unsigned char *packet = psmouse->packet;  in elantech_report_trackpoint()
494 			elantech_packet_dump(psmouse);  in elantech_report_trackpoint()
504 static void elantech_report_absolute_v3(struct psmouse *psmouse,  in elantech_report_absolute_v3()  argument
507 	struct input_dev *dev = psmouse->dev;  in elantech_report_absolute_v3()
508 	struct elantech_data *etd = psmouse->private;  in elantech_report_absolute_v3()
509 	unsigned char *packet = psmouse->packet;  in elantech_report_absolute_v3()
583 static void elantech_input_sync_v4(struct psmouse *psmouse)  in elantech_input_sync_v4()  argument
585 	struct input_dev *dev = psmouse->dev;  in elantech_input_sync_v4()
586 	struct elantech_data *etd = psmouse->private;  in elantech_input_sync_v4()
587 	unsigned char *packet = psmouse->packet;  in elantech_input_sync_v4()
599 static void process_packet_status_v4(struct psmouse *psmouse)  in process_packet_status_v4()  argument
601 	struct input_dev *dev = psmouse->dev;  in process_packet_status_v4()
602 	unsigned char *packet = psmouse->packet;  in process_packet_status_v4()
615 	elantech_input_sync_v4(psmouse);  in process_packet_status_v4()
618 static void process_packet_head_v4(struct psmouse *psmouse)  in process_packet_head_v4()  argument
620 	struct input_dev *dev = psmouse->dev;  in process_packet_head_v4()
621 	struct elantech_data *etd = psmouse->private;  in process_packet_head_v4()
622 	unsigned char *packet = psmouse->packet;  in process_packet_head_v4()
644 	elantech_input_sync_v4(psmouse);  in process_packet_head_v4()
647 static void process_packet_motion_v4(struct psmouse *psmouse)  in process_packet_motion_v4()  argument
649 	struct input_dev *dev = psmouse->dev;  in process_packet_motion_v4()
650 	struct elantech_data *etd = psmouse->private;  in process_packet_motion_v4()
651 	unsigned char *packet = psmouse->packet;  in process_packet_motion_v4()
685 	elantech_input_sync_v4(psmouse);  in process_packet_motion_v4()
688 static void elantech_report_absolute_v4(struct psmouse *psmouse,  in elantech_report_absolute_v4()  argument
693 		process_packet_status_v4(psmouse);  in elantech_report_absolute_v4()
697 		process_packet_head_v4(psmouse);  in elantech_report_absolute_v4()
701 		process_packet_motion_v4(psmouse);  in elantech_report_absolute_v4()
711 static int elantech_packet_check_v1(struct psmouse *psmouse)  in elantech_packet_check_v1()  argument
713 	struct elantech_data *etd = psmouse->private;  in elantech_packet_check_v1()
714 	unsigned char *packet = psmouse->packet;  in elantech_packet_check_v1()
735 static int elantech_debounce_check_v2(struct psmouse *psmouse)  in elantech_debounce_check_v2()  argument
744         unsigned char *packet = psmouse->packet;  in elantech_debounce_check_v2()
749 static int elantech_packet_check_v2(struct psmouse *psmouse)  in elantech_packet_check_v2()  argument
751 	struct elantech_data *etd = psmouse->private;  in elantech_packet_check_v2()
752 	unsigned char *packet = psmouse->packet;  in elantech_packet_check_v2()
781 static int elantech_packet_check_v3(struct psmouse *psmouse)  in elantech_packet_check_v3()  argument
783 	struct elantech_data *etd = psmouse->private;  in elantech_packet_check_v3()
787 	unsigned char *packet = psmouse->packet;  in elantech_packet_check_v3()
819 static int elantech_packet_check_v4(struct psmouse *psmouse)  in elantech_packet_check_v4()  argument
821 	struct elantech_data *etd = psmouse->private;  in elantech_packet_check_v4()
822 	unsigned char *packet = psmouse->packet;  in elantech_packet_check_v4()
868 static psmouse_ret_t elantech_process_byte(struct psmouse *psmouse)  in elantech_process_byte()  argument
870 	struct elantech_data *etd = psmouse->private;  in elantech_process_byte()
873 	if (psmouse->pktcnt < psmouse->pktsize)  in elantech_process_byte()
877 		elantech_packet_dump(psmouse);  in elantech_process_byte()
881 		if (etd->info.paritycheck && !elantech_packet_check_v1(psmouse))  in elantech_process_byte()
884 		elantech_report_absolute_v1(psmouse);  in elantech_process_byte()
889 		if (elantech_debounce_check_v2(psmouse))  in elantech_process_byte()
892 		if (etd->info.paritycheck && !elantech_packet_check_v2(psmouse))  in elantech_process_byte()
895 		elantech_report_absolute_v2(psmouse);  in elantech_process_byte()
899 		packet_type = elantech_packet_check_v3(psmouse);  in elantech_process_byte()
909 			elantech_report_trackpoint(psmouse, packet_type);  in elantech_process_byte()
913 			elantech_report_absolute_v3(psmouse, packet_type);  in elantech_process_byte()
920 		packet_type = elantech_packet_check_v4(psmouse);  in elantech_process_byte()
926 			elantech_report_trackpoint(psmouse, packet_type);  in elantech_process_byte()
930 			elantech_report_absolute_v4(psmouse, packet_type);  in elantech_process_byte()
945 static void elantech_set_rate_restore_reg_07(struct psmouse *psmouse,  in elantech_set_rate_restore_reg_07()  argument
948 	struct elantech_data *etd = psmouse->private;  in elantech_set_rate_restore_reg_07()
950 	etd->original_set_rate(psmouse, rate);  in elantech_set_rate_restore_reg_07()
951 	if (elantech_write_reg(psmouse, 0x07, etd->reg_07))  in elantech_set_rate_restore_reg_07()
952 		psmouse_err(psmouse, "restoring reg_07 failed\n");  in elantech_set_rate_restore_reg_07()
958 static int elantech_set_absolute_mode(struct psmouse *psmouse)  in elantech_set_absolute_mode()  argument
960 	struct elantech_data *etd = psmouse->private;  in elantech_set_absolute_mode()
969 		if (elantech_write_reg(psmouse, 0x10, etd->reg_10) ||  in elantech_set_absolute_mode()
970 		    elantech_write_reg(psmouse, 0x11, etd->reg_11)) {  in elantech_set_absolute_mode()
980 		if (elantech_write_reg(psmouse, 0x10, etd->reg_10) ||  in elantech_set_absolute_mode()
981 		    elantech_write_reg(psmouse, 0x11, etd->reg_11) ||  in elantech_set_absolute_mode()
982 		    elantech_write_reg(psmouse, 0x21, etd->reg_21)) {  in elantech_set_absolute_mode()
993 		if (elantech_write_reg(psmouse, 0x10, etd->reg_10))  in elantech_set_absolute_mode()
1000 		if (elantech_write_reg(psmouse, 0x07, etd->reg_07))  in elantech_set_absolute_mode()
1014 			rc = elantech_read_reg(psmouse, 0x10, &val);  in elantech_set_absolute_mode()
1023 			psmouse_err(psmouse,  in elantech_set_absolute_mode()
1027 			psmouse_err(psmouse,  in elantech_set_absolute_mode()
1035 		psmouse_err(psmouse, "failed to initialise registers.\n");  in elantech_set_absolute_mode()
1049 static int elantech_get_resolution_v4(struct psmouse *psmouse,  in elantech_get_resolution_v4()  argument
1056 	if (elantech_send_cmd(psmouse, ETP_RESOLUTION_QUERY, param))  in elantech_get_resolution_v4()
1066 static void elantech_set_buttonpad_prop(struct psmouse *psmouse)  in elantech_set_buttonpad_prop()  argument
1068 	struct input_dev *dev = psmouse->dev;  in elantech_set_buttonpad_prop()
1069 	struct elantech_data *etd = psmouse->private;  in elantech_set_buttonpad_prop()
1110 static int elantech_set_input_params(struct psmouse *psmouse)  in elantech_set_input_params()  argument
1112 	struct input_dev *dev = psmouse->dev;  in elantech_set_input_params()
1113 	struct elantech_data *etd = psmouse->private;  in elantech_set_input_params()
1152 			elantech_set_buttonpad_prop(psmouse);  in elantech_set_input_params()
1167 		elantech_set_buttonpad_prop(psmouse);  in elantech_set_input_params()
1216 static ssize_t elantech_show_int_attr(struct psmouse *psmouse, void *data,  in elantech_show_int_attr()  argument
1219 	struct elantech_data *etd = psmouse->private;  in elantech_show_int_attr()
1225 		rc = elantech_read_reg(psmouse, attr->reg, reg);  in elantech_show_int_attr()
1233 static ssize_t elantech_set_int_attr(struct psmouse *psmouse,  in elantech_set_int_attr()  argument
1236 	struct elantech_data *etd = psmouse->private;  in elantech_set_int_attr()
1256 	if (!attr->reg || elantech_write_reg(psmouse, attr->reg, value) == 0)  in elantech_set_int_attr()
1347 int elantech_detect(struct psmouse *psmouse, bool set_properties)  in elantech_detect()  argument
1349 	struct ps2dev *ps2dev = &psmouse->ps2dev;  in elantech_detect()
1359 		psmouse_dbg(psmouse, "sending Elantech magic knock failed.\n");  in elantech_detect()
1369 		psmouse_dbg(psmouse,  in elantech_detect()
1380 	if (synaptics_send_cmd(psmouse, ETP_FW_VERSION_QUERY, param)) {  in elantech_detect()
1381 		psmouse_dbg(psmouse, "failed to query firmware version.\n");  in elantech_detect()
1385 	psmouse_dbg(psmouse,  in elantech_detect()
1390 		psmouse_dbg(psmouse,  in elantech_detect()
1396 		psmouse->vendor = "Elantech";  in elantech_detect()
1397 		psmouse->name = "Touchpad";  in elantech_detect()
1406 static void elantech_disconnect(struct psmouse *psmouse)  in elantech_disconnect()  argument
1408 	struct elantech_data *etd = psmouse->private;  in elantech_disconnect()
1414 	psmouse_smbus_cleanup(psmouse);  in elantech_disconnect()
1418 	sysfs_remove_group(&psmouse->ps2dev.serio->dev.kobj,  in elantech_disconnect()
1420 	kfree(psmouse->private);  in elantech_disconnect()
1421 	psmouse->private = NULL;  in elantech_disconnect()
1427 static int elantech_reconnect(struct psmouse *psmouse)  in elantech_reconnect()  argument
1429 	psmouse_reset(psmouse);  in elantech_reconnect()
1431 	if (elantech_detect(psmouse, 0))  in elantech_reconnect()
1434 	if (elantech_set_absolute_mode(psmouse)) {  in elantech_reconnect()
1435 		psmouse_err(psmouse,  in elantech_reconnect()
1596 static int elantech_query_info(struct psmouse *psmouse,  in elantech_query_info()  argument
1607 	if (synaptics_send_cmd(psmouse, ETP_FW_VERSION_QUERY, param)) {  in elantech_query_info()
1608 		psmouse_err(psmouse, "failed to query firmware version.\n");  in elantech_query_info()
1614 		psmouse_err(psmouse, "unknown hardware version, aborting...\n");  in elantech_query_info()
1617 	psmouse_info(psmouse,  in elantech_query_info()
1621 	if (info->send_cmd(psmouse, ETP_CAPABILITIES_QUERY,  in elantech_query_info()
1623 		psmouse_err(psmouse, "failed to query capabilities.\n");  in elantech_query_info()
1626 	psmouse_info(psmouse,  in elantech_query_info()
1632 		if (info->send_cmd(psmouse, ETP_SAMPLE_QUERY, info->samples)) {  in elantech_query_info()
1633 			psmouse_err(psmouse, "failed to query sample data\n");  in elantech_query_info()
1636 		psmouse_info(psmouse,  in elantech_query_info()
1649 		psmouse_info(psmouse,  in elantech_query_info()
1660 		if (elantech_get_resolution_v4(psmouse,  in elantech_query_info()
1664 			psmouse_warn(psmouse,  in elantech_query_info()
1693 			if (info->send_cmd(psmouse, ETP_FW_ID_QUERY, param))  in elantech_query_info()
1699 				if (info->send_cmd(psmouse, ETP_SAMPLE_QUERY, param))  in elantech_query_info()
1718 		if (info->send_cmd(psmouse, ETP_FW_ID_QUERY, param))  in elantech_query_info()
1726 		if (info->send_cmd(psmouse, ETP_FW_ID_QUERY, param))  in elantech_query_info()
1782 static int elantech_create_smbus(struct psmouse *psmouse,  in elantech_create_smbus()  argument
1826 	return psmouse_smbus_init(psmouse, &smbus_board, NULL, 0, false,  in elantech_create_smbus()
1834 static int elantech_setup_smbus(struct psmouse *psmouse,  in elantech_setup_smbus()  argument
1850 		    psmouse_matches_pnp_id(psmouse, i2c_blacklist_pnp_ids))  in elantech_setup_smbus()
1854 	psmouse_info(psmouse, "Trying to set up SMBus access\n");  in elantech_setup_smbus()
1856 	error = elantech_create_smbus(psmouse, info, leave_breadcrumbs);  in elantech_setup_smbus()
1859 			psmouse_info(psmouse, "SMbus companion is not ready yet\n");  in elantech_setup_smbus()
1861 			psmouse_err(psmouse, "unable to create intertouch device\n");  in elantech_setup_smbus()
1869 static bool elantech_use_host_notify(struct psmouse *psmouse,  in elantech_use_host_notify()  argument
1881 		psmouse_dbg(psmouse, "Ignoring SMBus provider through alert protocol.\n");  in elantech_use_host_notify()
1887 		psmouse_dbg(psmouse,  in elantech_use_host_notify()
1895 int elantech_init_smbus(struct psmouse *psmouse)  in elantech_init_smbus()  argument
1900 	psmouse_reset(psmouse);  in elantech_init_smbus()
1902 	error = elantech_query_info(psmouse, &info);  in elantech_init_smbus()
1911 	return elantech_create_smbus(psmouse, &info, false);  in elantech_init_smbus()
1913 	psmouse_reset(psmouse);  in elantech_init_smbus()
1921 static int elantech_setup_ps2(struct psmouse *psmouse,  in elantech_setup_ps2()  argument
1929 	psmouse->private = etd = kzalloc(sizeof(*etd), GFP_KERNEL);  in elantech_setup_ps2()
1939 	if (elantech_set_absolute_mode(psmouse)) {  in elantech_setup_ps2()
1940 		psmouse_err(psmouse,  in elantech_setup_ps2()
1946 		etd->original_set_rate = psmouse->set_rate;  in elantech_setup_ps2()
1947 		psmouse->set_rate = elantech_set_rate_restore_reg_07;  in elantech_setup_ps2()
1950 	if (elantech_set_input_params(psmouse)) {  in elantech_setup_ps2()
1951 		psmouse_err(psmouse, "failed to query touchpad range.\n");  in elantech_setup_ps2()
1955 	error = sysfs_create_group(&psmouse->ps2dev.serio->dev.kobj,  in elantech_setup_ps2()
1958 		psmouse_err(psmouse,  in elantech_setup_ps2()
1974 			psmouse->ps2dev.serio->phys);  in elantech_setup_ps2()
1981 		tp_dev->dev.parent = &psmouse->ps2dev.serio->dev;  in elantech_setup_ps2()
1997 	psmouse->protocol_handler = elantech_process_byte;  in elantech_setup_ps2()
1998 	psmouse->disconnect = elantech_disconnect;  in elantech_setup_ps2()
1999 	psmouse->reconnect = elantech_reconnect;  in elantech_setup_ps2()
2000 	psmouse->pktsize = info->hw_version > 1 ? 6 : 4;  in elantech_setup_ps2()
2006 	sysfs_remove_group(&psmouse->ps2dev.serio->dev.kobj,  in elantech_setup_ps2()
2013 int elantech_init_ps2(struct psmouse *psmouse)  in elantech_init_ps2()  argument
2018 	psmouse_reset(psmouse);  in elantech_init_ps2()
2020 	error = elantech_query_info(psmouse, &info);  in elantech_init_ps2()
2024 	error = elantech_setup_ps2(psmouse, &info);  in elantech_init_ps2()
2030 	psmouse_reset(psmouse);  in elantech_init_ps2()
2034 int elantech_init(struct psmouse *psmouse)  in elantech_init()  argument
2039 	psmouse_reset(psmouse);  in elantech_init()
2041 	error = elantech_query_info(psmouse, &info);  in elantech_init()
2047 	if (elantech_use_host_notify(psmouse, &info)) {  in elantech_init()
2050 			psmouse_warn(psmouse,  in elantech_init()
2054 		error = elantech_setup_smbus(psmouse, &info, true);  in elantech_init()
2061 	error = elantech_setup_ps2(psmouse, &info);  in elantech_init()
2067 		psmouse_smbus_cleanup(psmouse);  in elantech_init()
2073 	psmouse_reset(psmouse);  in elantech_init()