44 	struct input_mt *mt = dev->mt;  in input_mt_init_slots()  local
49 	if (mt)  in input_mt_init_slots()
50 		return mt->num_slots != num_slots ? -EINVAL : 0;  in input_mt_init_slots()
52 	mt = kzalloc(sizeof(*mt) + num_slots * sizeof(*mt->slots), GFP_KERNEL);  in input_mt_init_slots()
53 	if (!mt)  in input_mt_init_slots()
56 	mt->num_slots = num_slots;  in input_mt_init_slots()
57 	mt->flags = flags;  in input_mt_init_slots()
86 		mt->red = kcalloc(n2, sizeof(*mt->red), GFP_KERNEL);  in input_mt_init_slots()
87 		if (!mt->red)  in input_mt_init_slots()
93 		input_mt_set_value(&mt->slots[i], ABS_MT_TRACKING_ID, -1);  in input_mt_init_slots()
96 	mt->frame = 1;  in input_mt_init_slots()
98 	dev->mt = mt;  in input_mt_init_slots()
101 	kfree(mt);  in input_mt_init_slots()
115 	if (dev->mt) {  in input_mt_destroy_slots()
116 		kfree(dev->mt->red);  in input_mt_destroy_slots()
117 		kfree(dev->mt);  in input_mt_destroy_slots()
119 	dev->mt = NULL;  in input_mt_destroy_slots()
138 	struct input_mt *mt = dev->mt;  in input_mt_report_slot_state()  local
142 	if (!mt)  in input_mt_report_slot_state()
145 	slot = &mt->slots[mt->slot];  in input_mt_report_slot_state()
146 	slot->frame = mt->frame;  in input_mt_report_slot_state()
155 		id = input_mt_new_trkid(mt);  in input_mt_report_slot_state()
196 	struct input_mt *mt = dev->mt;  in input_mt_report_pointer_emulation()  local
200 	if (!mt)  in input_mt_report_pointer_emulation()
204 	oldid = mt->trkid;  in input_mt_report_pointer_emulation()
207 	for (i = 0; i < mt->num_slots; ++i) {  in input_mt_report_pointer_emulation()
208 		struct input_mt_slot *ps = &mt->slots[i];  in input_mt_report_pointer_emulation()
242 static void __input_mt_drop_unused(struct input_dev *dev, struct input_mt *mt)  in __input_mt_drop_unused()  argument
246 	for (i = 0; i < mt->num_slots; i++) {  in __input_mt_drop_unused()
247 		if (!input_mt_is_used(mt, &mt->slots[i])) {  in __input_mt_drop_unused()
262 	struct input_mt *mt = dev->mt;  in input_mt_drop_unused()  local
264 	if (mt) {  in input_mt_drop_unused()
265 		__input_mt_drop_unused(dev, mt);  in input_mt_drop_unused()
266 		mt->frame++;  in input_mt_drop_unused()
281 	struct input_mt *mt = dev->mt;  in input_mt_sync_frame()  local
284 	if (!mt)  in input_mt_sync_frame()
287 	if (mt->flags & INPUT_MT_DROP_UNUSED)  in input_mt_sync_frame()
288 		__input_mt_drop_unused(dev, mt);  in input_mt_sync_frame()
290 	if ((mt->flags & INPUT_MT_POINTER) && !(mt->flags & INPUT_MT_SEMI_MT))  in input_mt_sync_frame()
295 	mt->frame++;  in input_mt_sync_frame()
344 static int input_mt_set_matrix(struct input_mt *mt,  in input_mt_set_matrix()  argument
350 	int *w = mt->red;  in input_mt_set_matrix()
353 	for (s = mt->slots; s != mt->slots + mt->num_slots; s++) {  in input_mt_set_matrix()
364 	return w - mt->red;  in input_mt_set_matrix()
367 static void input_mt_set_slots(struct input_mt *mt,  in input_mt_set_slots()  argument
371 	int *w = mt->red, j;  in input_mt_set_slots()
376 	for (s = mt->slots; s != mt->slots + mt->num_slots; s++) {  in input_mt_set_slots()
382 				slots[j] = s - mt->slots;  in input_mt_set_slots()
390 	for (s = mt->slots; s != mt->slots + mt->num_slots; s++) {  in input_mt_set_slots()
396 				slots[j] = s - mt->slots;  in input_mt_set_slots()
425 	struct input_mt *mt = dev->mt;  in input_mt_assign_slots()  local
429 	if (!mt || !mt->red)  in input_mt_assign_slots()
431 	if (num_pos > mt->num_slots)  in input_mt_assign_slots()
436 	nrc = input_mt_set_matrix(mt, pos, num_pos, mu);  in input_mt_assign_slots()
437 	find_reduced_matrix(mt->red, num_pos, nrc / num_pos, nrc, mu);  in input_mt_assign_slots()
438 	input_mt_set_slots(mt, slots, num_pos);  in input_mt_assign_slots()
458 	struct input_mt *mt = dev->mt;  in input_mt_get_slot_by_key()  local
461 	if (!mt)  in input_mt_get_slot_by_key()
464 	for (s = mt->slots; s != mt->slots + mt->num_slots; s++)  in input_mt_get_slot_by_key()
466 			return s - mt->slots;  in input_mt_get_slot_by_key()
468 	for (s = mt->slots; s != mt->slots + mt->num_slots; s++)  in input_mt_get_slot_by_key()
469 		if (!input_mt_is_active(s) && !input_mt_is_used(mt, s)) {  in input_mt_get_slot_by_key()
471 			return s - mt->slots;  in input_mt_get_slot_by_key()