1 // SPDX-License-Identifier: GPL-2.0-only
15 #include <linux/input/sparse-keymap.h>
26 	struct key_entry *key;  in sparse_keymap_get_key_index()  local
29 	for (key = dev->keycode; key->type != KE_END; key++) {  in sparse_keymap_get_key_index()
30 		if (key->type == KE_KEY) {  in sparse_keymap_get_key_index()
31 			if (key == k)  in sparse_keymap_get_key_index()
43 	struct key_entry *key;  in sparse_keymap_entry_by_index()  local
46 	for (key = dev->keycode; key->type != KE_END; key++)  in sparse_keymap_entry_by_index()
47 		if (key->type == KE_KEY)  in sparse_keymap_entry_by_index()
49 				return key;  in sparse_keymap_entry_by_index()
55  * sparse_keymap_entry_from_scancode - perform sparse keymap lookup
57  * @code: Scan code
63 						    unsigned int code)  in sparse_keymap_entry_from_scancode()  argument
65 	struct key_entry *key;  in sparse_keymap_entry_from_scancode()  local
67 	for (key = dev->keycode; key->type != KE_END; key++)  in sparse_keymap_entry_from_scancode()
68 		if (code == key->code)  in sparse_keymap_entry_from_scancode()
69 			return key;  in sparse_keymap_entry_from_scancode()
76  * sparse_keymap_entry_from_keycode - perform sparse keymap lookup
78  * @keycode: Key code
86 	struct key_entry *key;  in sparse_keymap_entry_from_keycode()  local
88 	for (key = dev->keycode; key->type != KE_END; key++)  in sparse_keymap_entry_from_keycode()
89 		if (key->type == KE_KEY && keycode == key->keycode)  in sparse_keymap_entry_from_keycode()
90 			return key;  in sparse_keymap_entry_from_keycode()
99 	struct key_entry *key;  in sparse_keymap_locate()  local
102 	if (ke->flags & INPUT_KEYMAP_BY_INDEX)  in sparse_keymap_locate()
103 		key = sparse_keymap_entry_by_index(dev, ke->index);  in sparse_keymap_locate()
105 		key = sparse_keymap_entry_from_scancode(dev, scancode);  in sparse_keymap_locate()
107 		key = NULL;  in sparse_keymap_locate()
109 	return key;  in sparse_keymap_locate()
115 	const struct key_entry *key;  in sparse_keymap_getkeycode()  local
117 	if (dev->keycode) {  in sparse_keymap_getkeycode()
118 		key = sparse_keymap_locate(dev, ke);  in sparse_keymap_getkeycode()
119 		if (key && key->type == KE_KEY) {  in sparse_keymap_getkeycode()
120 			ke->keycode = key->keycode;  in sparse_keymap_getkeycode()
121 			if (!(ke->flags & INPUT_KEYMAP_BY_INDEX))  in sparse_keymap_getkeycode()
122 				ke->index =  in sparse_keymap_getkeycode()
123 					sparse_keymap_get_key_index(dev, key);  in sparse_keymap_getkeycode()
124 			ke->len = sizeof(key->code);  in sparse_keymap_getkeycode()
125 			memcpy(ke->scancode, &key->code, sizeof(key->code));  in sparse_keymap_getkeycode()
130 	return -EINVAL;  in sparse_keymap_getkeycode()
137 	struct key_entry *key;  in sparse_keymap_setkeycode()  local
139 	if (dev->keycode) {  in sparse_keymap_setkeycode()
140 		key = sparse_keymap_locate(dev, ke);  in sparse_keymap_setkeycode()
141 		if (key && key->type == KE_KEY) {  in sparse_keymap_setkeycode()
142 			*old_keycode = key->keycode;  in sparse_keymap_setkeycode()
143 			key->keycode = ke->keycode;  in sparse_keymap_setkeycode()
144 			set_bit(ke->keycode, dev->keybit);  in sparse_keymap_setkeycode()
146 				clear_bit(*old_keycode, dev->keybit);  in sparse_keymap_setkeycode()
151 	return -EINVAL;  in sparse_keymap_setkeycode()
155  * sparse_keymap_setup - set up sparse keymap for an input device
177 	for (e = keymap; e->type != KE_END; e++)  in sparse_keymap_setup()
180 	map = devm_kmemdup_array(&dev->dev, keymap, map_size, sizeof(*keymap), GFP_KERNEL);  in sparse_keymap_setup()
182 		return -ENOMEM;  in sparse_keymap_setup()
193 		switch (entry->type) {  in sparse_keymap_setup()
195 			__set_bit(EV_KEY, dev->evbit);  in sparse_keymap_setup()
196 			__set_bit(entry->keycode, dev->keybit);  in sparse_keymap_setup()
201 			__set_bit(EV_SW, dev->evbit);  in sparse_keymap_setup()
202 			__set_bit(entry->sw.code, dev->swbit);  in sparse_keymap_setup()
207 	if (test_bit(EV_KEY, dev->evbit)) {  in sparse_keymap_setup()
208 		__set_bit(KEY_UNKNOWN, dev->keybit);  in sparse_keymap_setup()
209 		__set_bit(EV_MSC, dev->evbit);  in sparse_keymap_setup()
210 		__set_bit(MSC_SCAN, dev->mscbit);  in sparse_keymap_setup()
213 	dev->keycode = map;  in sparse_keymap_setup()
214 	dev->keycodemax = map_size;  in sparse_keymap_setup()
215 	dev->getkeycode = sparse_keymap_getkeycode;  in sparse_keymap_setup()
216 	dev->setkeycode = sparse_keymap_setkeycode;  in sparse_keymap_setup()
223  * sparse_keymap_report_entry - report event corresponding to given key entry
225  * @ke: key entry describing event
237 	switch (ke->type) {  in sparse_keymap_report_entry()
239 		input_event(dev, EV_MSC, MSC_SCAN, ke->code);  in sparse_keymap_report_entry()
240 		input_report_key(dev, ke->keycode, value);  in sparse_keymap_report_entry()
243 			input_report_key(dev, ke->keycode, 0);  in sparse_keymap_report_entry()
249 		value = ke->sw.value;  in sparse_keymap_report_entry()
253 		input_report_switch(dev, ke->sw.code, value);  in sparse_keymap_report_entry()
261  * sparse_keymap_report_event - report event corresponding to given scancode
263  * @code: Scan code
273 bool sparse_keymap_report_event(struct input_dev *dev, unsigned int code,  in sparse_keymap_report_event()  argument
277 		sparse_keymap_entry_from_scancode(dev, code);  in sparse_keymap_report_event()
285 	/* Report an unknown key event as a debugging aid */  in sparse_keymap_report_event()
287 	unknown_ke.code = code;  in sparse_keymap_report_event()