1 // SPDX-License-Identifier: GPL-2.0-only
45  * declared under the device node, while surfacepro3_button.c only needs
46  * the ACPI companion node.
93 	struct platform_device *pd;  in surface3_button_device_create()  local
100 	gpio_keys_pdata = devm_kzalloc(&client->dev,  in surface3_button_device_create()
105 		return ERR_PTR(-ENOMEM);  in surface3_button_device_create()
109 	for (info = button_info; info->name; info++) {  in surface3_button_device_create()
110 		if (info->autorepeat != autorepeat)  in surface3_button_device_create()
113 		gpio = surface3_button_lookup_gpio(&client->dev,  in surface3_button_device_create()
114 						   info->acpi_index);  in surface3_button_device_create()
118 		gpio_keys[n_buttons].type = info->event_type;  in surface3_button_device_create()
119 		gpio_keys[n_buttons].code = info->event_code;  in surface3_button_device_create()
121 		gpio_keys[n_buttons].active_low = info->active_low;  in surface3_button_device_create()
122 		gpio_keys[n_buttons].desc = info->name;  in surface3_button_device_create()
123 		gpio_keys[n_buttons].wakeup = info->wakeup;  in surface3_button_device_create()
128 		error = -ENODEV;  in surface3_button_device_create()
132 	gpio_keys_pdata->buttons = gpio_keys;  in surface3_button_device_create()
133 	gpio_keys_pdata->nbuttons = n_buttons;  in surface3_button_device_create()
134 	gpio_keys_pdata->rep = autorepeat;  in surface3_button_device_create()
136 	pd = platform_device_alloc("gpio-keys", PLATFORM_DEVID_AUTO);  in surface3_button_device_create()
137 	if (!pd) {  in surface3_button_device_create()
138 		error = -ENOMEM;  in surface3_button_device_create()
142 	error = platform_device_add_data(pd, gpio_keys_pdata,  in surface3_button_device_create()
147 	error = platform_device_add(pd);  in surface3_button_device_create()
151 	return pd;  in surface3_button_device_create()
154 	platform_device_put(pd);  in surface3_button_device_create()
156 	devm_kfree(&client->dev, gpio_keys_pdata);  in surface3_button_device_create()
167 		if (priv->children[i])  in surface3_button_remove()
168 			platform_device_unregister(priv->children[i]);  in surface3_button_remove()
184 	struct device *dev = &client->dev;  in surface3_button_probe()
186 	struct platform_device *pd;  in surface3_button_probe()  local
190 	if (strncmp(acpi_device_bid(ACPI_COMPANION(&client->dev)),  in surface3_button_probe()
193 		return -ENODEV;  in surface3_button_probe()
203 		return -ENOMEM;  in surface3_button_probe()
208 		pd = surface3_button_device_create(client,  in surface3_button_probe()
211 		if (IS_ERR(pd)) {  in surface3_button_probe()
212 			error = PTR_ERR(pd);  in surface3_button_probe()
213 			if (error != -ENODEV) {  in surface3_button_probe()
220 		priv->children[i] = pd;  in surface3_button_probe()
223 	if (!priv->children[0] && !priv->children[1])  in surface3_button_probe()
224 		return -ENODEV;  in surface3_button_probe()