1 // SPDX-License-Identifier: GPL-2.0+
26 	int key_rows;			/* Number of keyboard rows */
40  * @return number of pressed keys, 0 for none, -EIO on error
53 	if (cros_ec_scan_keyboard(dev->parent, &scan)) {  in check_for_keys()
55 		return -EIO;  in check_for_keys()
68 	for (col = num_keys = bit = 0; col < priv->matrix.num_cols;  in check_for_keys()
70 		for (row = 0; row < priv->matrix.num_rows; row++) {  in check_for_keys()
76 				key->row = row;  in check_for_keys()
77 				key->col = col;  in check_for_keys()
78 				key->valid = 1;  in check_for_keys()
98 	struct udevice *dev = input->dev;  in cros_ec_kbc_check()
111 	 * will always return non-zero if keys have been pressed.  in cros_ec_kbc_check()
118 		irq_pending = cros_ec_interrupt_pending(dev->parent);  in cros_ec_kbc_check()
136 			return -1;  in cros_ec_kbc_check()
137 		num_keycodes = key_matrix_decode(&priv->matrix, keys,  in cros_ec_kbc_check()
158  * @return 0 if ok, -1 on error
164 	 * Get keyboard rows and columns - at present we are limited to  in cros_ec_keyb_decode_fdt()
167 	config->key_rows = dev_read_u32_default(dev, "keypad,num-rows", 0);  in cros_ec_keyb_decode_fdt()
168 	config->key_cols = dev_read_u32_default(dev, "keypad,num-columns", 0);  in cros_ec_keyb_decode_fdt()
169 	if (!config->key_rows || !config->key_cols ||  in cros_ec_keyb_decode_fdt()
170 			config->key_rows * config->key_cols / 8  in cros_ec_keyb_decode_fdt()
173 		      config->key_rows, config->key_cols);  in cros_ec_keyb_decode_fdt()
174 		return -1;  in cros_ec_keyb_decode_fdt()
176 	config->ghost_filter = dev_read_bool(dev, "google,needs-ghost-filter");  in cros_ec_keyb_decode_fdt()
185 	struct stdio_dev *sdev = &uc_priv->sdev;  in cros_ec_kbd_probe()
186 	struct input_config *input = &uc_priv->input;  in cros_ec_kbd_probe()
192 		return -EINVAL;  in cros_ec_kbd_probe()
195 	ret = key_matrix_init(&priv->matrix, priv->key_rows, priv->key_cols,  in cros_ec_kbd_probe()
196 			      priv->ghost_filter);  in cros_ec_kbd_probe()
201 	ret = key_matrix_decode_fdt(dev, &priv->matrix);  in cros_ec_kbd_probe()
206 	debug("%s: Matrix keyboard %dx%d ready\n", __func__, priv->key_rows,  in cros_ec_kbd_probe()
207 	      priv->key_cols);  in cros_ec_kbd_probe()
209 	priv->input = input;  in cros_ec_kbd_probe()
210 	input->dev = dev;  in cros_ec_kbd_probe()
212 	input->read_keys = cros_ec_kbc_check;  in cros_ec_kbd_probe()
213 	strcpy(sdev->name, "cros-ec-keyb");  in cros_ec_kbd_probe()
223 	{ .compatible = "google,cros-ec-keyb" },