int wacom_initialize_leds()

in wacom_sys.c [1576:1693]

• 99 lines of code
• 25 McCabe index (conditional complexity)

int wacom_initialize_leds(struct wacom *wacom)
{
	int error;

	if (!(wacom->wacom_wac.features.device_type & WACOM_DEVICETYPE_PAD))
		return 0;

	/* Initialize default values */
	switch (wacom->wacom_wac.features.type) {
	case HID_GENERIC:
		if (!wacom->generic_has_leds)
			return 0;
		wacom->led.llv = 100;
		wacom->led.max_llv = 100;

		error = wacom_leds_alloc_and_register(wacom, 1, 4, false);
		if (error) {
			hid_err(wacom->hdev,
				"cannot create leds err: %d\n", error);
			return error;
		}

		error = wacom_devm_sysfs_create_group(wacom,
						      &generic_led_attr_group);
		break;

	case INTUOS4S:
	case INTUOS4:
	case INTUOS4WL:
	case INTUOS4L:
		wacom->led.llv = 10;
		wacom->led.hlv = 20;
		wacom->led.max_llv = 127;
		wacom->led.max_hlv = 127;
		wacom->led.img_lum = 10;

		error = wacom_leds_alloc_and_register(wacom, 1, 4, false);
		if (error) {
			hid_err(wacom->hdev,
				"cannot create leds err: %d\n", error);
			return error;
		}

		error = wacom_devm_sysfs_create_group(wacom,
						      &intuos4_led_attr_group);
		break;

	case WACOM_24HD:
	case WACOM_21UX2:
		wacom->led.llv = 0;
		wacom->led.hlv = 0;
		wacom->led.img_lum = 0;

		error = wacom_leds_alloc_and_register(wacom, 2, 4, false);
		if (error) {
			hid_err(wacom->hdev,
				"cannot create leds err: %d\n", error);
			return error;
		}

		error = wacom_devm_sysfs_create_group(wacom,
						      &cintiq_led_attr_group);
		break;

	case INTUOS5S:
	case INTUOS5:
	case INTUOS5L:
	case INTUOSPS:
	case INTUOSPM:
	case INTUOSPL:
		wacom->led.llv = 32;
		wacom->led.max_llv = 96;

		error = wacom_leds_alloc_and_register(wacom, 1, 4, false);
		if (error) {
			hid_err(wacom->hdev,
				"cannot create leds err: %d\n", error);
			return error;
		}

		error = wacom_devm_sysfs_create_group(wacom,
						      &intuos5_led_attr_group);
		break;

	case INTUOSP2_BT:
		wacom->led.llv = 50;
		wacom->led.max_llv = 100;
		error = wacom_leds_alloc_and_register(wacom, 1, 4, false);
		if (error) {
			hid_err(wacom->hdev,
				"cannot create leds err: %d\n", error);
			return error;
		}
		return 0;

	case REMOTE:
		wacom->led.llv = 255;
		wacom->led.max_llv = 255;
		error = wacom_led_groups_allocate(wacom, 5);
		if (error) {
			hid_err(wacom->hdev,
				"cannot create leds err: %d\n", error);
			return error;
		}
		return 0;

	default:
		return 0;
	}

	if (error) {
		hid_err(wacom->hdev,
			"cannot create sysfs group err: %d\n", error);
		return error;
	}

	return 0;
}