1 // SPDX-License-Identifier: GPL-2.0-only
29  * Power-on Reset: Resets all trackpoint parameters, including RAM values,
31  * Returns zero on success, non-zero on failure.
42 	/* Check for success response -- 0xAA00 */  in trackpoint_power_on_reset()
44 		return -ENODEV;  in trackpoint_power_on_reset()
72 		return -EINVAL;  in trackpoint_toggle_bit()
94  * Trackpoint-specific attributes
100 	bool inverted;  member
107 	struct trackpoint_data *tp = psmouse->private;  in trackpoint_show_int_attr()
109 	u8 value = *(u8 *)((void *)tp + attr->field_offset);  in trackpoint_show_int_attr()
111 	if (attr->inverted)  in trackpoint_show_int_attr()
120 	struct trackpoint_data *tp = psmouse->private;  in trackpoint_set_int_attr()
122 	u8 *field = (void *)tp + attr->field_offset;  in trackpoint_set_int_attr()
131 	err = trackpoint_write(&psmouse->ps2dev, attr->command, value);  in trackpoint_set_int_attr()
149 	struct trackpoint_data *tp = psmouse->private;  in trackpoint_set_bit_attr()
151 	bool *field = (void *)tp + attr->field_offset;  in trackpoint_set_bit_attr()
159 	if (attr->inverted)  in trackpoint_set_bit_attr()
164 		err = trackpoint_toggle_bit(&psmouse->ps2dev,  in trackpoint_set_bit_attr()
165 					    attr->command, attr->mask);  in trackpoint_set_bit_attr()
178 	.inverted		= _inv,					\
207 	struct trackpoint_data *tp = psmouse->private;  in trackpoint_is_attr_available()
209 	return tp->variant_id == TP_VARIANT_IBM ||  in trackpoint_is_attr_available()
221 	return trackpoint_is_attr_available(psmouse, attr) ? attr->mode : 0;  in trackpoint_is_attr_visible()
251 	if ((!_power_on || _tp->_name != _attr->power_on_default) &&	\
254 		if (!_attr->mask)					\
255 			trackpoint_write(&_psmouse->ps2dev,		\
256 					 _attr->command, _tp->_name);	\
258 			trackpoint_update_bit(&_psmouse->ps2dev,	\
259 					_attr->command, _attr->mask,	\
260 					_tp->_name);			\
266 	_tp->_name = trackpoint_attr_##_name.power_on_default;		\
275 	error = ps2_command(&psmouse->ps2dev,  in trackpoint_start_protocol()
294 	return -ENODEV;  in trackpoint_start_protocol()
299  * in_power_on_state: Set to true if TP is in default / power-on state (ex. if
300  *		      power-on reset was run). If so, values will only be
301  *		      written to TP if they differ from power-on default.
305 	struct trackpoint_data *tp = psmouse->private;  in trackpoint_sync()
307 	if (!in_power_on_state && tp->variant_id == TP_VARIANT_IBM) {  in trackpoint_sync()
312 		trackpoint_update_bit(&psmouse->ps2dev, TP_TOGGLE_TWOHAND,  in trackpoint_sync()
315 		trackpoint_update_bit(&psmouse->ps2dev, TP_TOGGLE_SOURCE_TAG,  in trackpoint_sync()
318 		trackpoint_update_bit(&psmouse->ps2dev, TP_TOGGLE_MB,  in trackpoint_sync()
324 	 * configure them if the values are non-default or if the TP is in  in trackpoint_sync()
369 	device_remove_group(&psmouse->ps2dev.serio->dev,  in trackpoint_disconnect()
372 	kfree(psmouse->private);  in trackpoint_disconnect()
373 	psmouse->private = NULL;  in trackpoint_disconnect()
378 	struct trackpoint_data *tp = psmouse->private;  in trackpoint_reconnect()
386 	was_reset = tp->variant_id == TP_VARIANT_IBM &&  in trackpoint_reconnect()
387 		    trackpoint_power_on_reset(&psmouse->ps2dev) == 0;  in trackpoint_reconnect()
398 	struct ps2dev *ps2dev = &psmouse->ps2dev;  in trackpoint_detect()
414 		return -ENOMEM;  in trackpoint_detect()
417 	tp->variant_id = variant_id;  in trackpoint_detect()
418 	tp->firmware_id = firmware_id;  in trackpoint_detect()
420 	psmouse->private = tp;  in trackpoint_detect()
422 	psmouse->vendor = trackpoint_variants[variant_id];  in trackpoint_detect()
423 	psmouse->name = "TrackPoint";  in trackpoint_detect()
425 	psmouse->reconnect = trackpoint_reconnect;  in trackpoint_detect()
426 	psmouse->disconnect = trackpoint_disconnect;  in trackpoint_detect()
445 		input_set_capability(psmouse->dev, EV_KEY, BTN_MIDDLE);  in trackpoint_detect()
447 	__set_bit(INPUT_PROP_POINTER, psmouse->dev->propbit);  in trackpoint_detect()
448 	__set_bit(INPUT_PROP_POINTING_STICK, psmouse->dev->propbit);  in trackpoint_detect()
458 	error = device_add_group(&ps2dev->serio->dev, &trackpoint_attr_group);  in trackpoint_detect()
463 		kfree(psmouse->private);  in trackpoint_detect()
464 		psmouse->private = NULL;  in trackpoint_detect()
465 		return -1;  in trackpoint_detect()
470 		     psmouse->vendor, firmware_id,  in trackpoint_detect()