int wacom_setup_touch_input_capabilities()

in wacom_wac.c [3775:3911]

• 120 lines of code
• 33 McCabe index (conditional complexity)

int wacom_setup_touch_input_capabilities(struct input_dev *input_dev,
					 struct wacom_wac *wacom_wac)
{
	struct wacom_features *features = &wacom_wac->features;

	if (!(features->device_type & WACOM_DEVICETYPE_TOUCH))
		return -ENODEV;

	if (features->device_type & WACOM_DEVICETYPE_DIRECT)
		__set_bit(INPUT_PROP_DIRECT, input_dev->propbit);
	else
		__set_bit(INPUT_PROP_POINTER, input_dev->propbit);

	if (features->type == HID_GENERIC)
		/* setup has already been done */
		return 0;

	input_dev->evbit[0] |= BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
	__set_bit(BTN_TOUCH, input_dev->keybit);

	if (features->touch_max == 1) {
		input_set_abs_params(input_dev, ABS_X, 0,
			features->x_max, features->x_fuzz, 0);
		input_set_abs_params(input_dev, ABS_Y, 0,
			features->y_max, features->y_fuzz, 0);
		input_abs_set_res(input_dev, ABS_X,
				  features->x_resolution);
		input_abs_set_res(input_dev, ABS_Y,
				  features->y_resolution);
	}
	else if (features->touch_max > 1) {
		input_set_abs_params(input_dev, ABS_MT_POSITION_X, 0,
			features->x_max, features->x_fuzz, 0);
		input_set_abs_params(input_dev, ABS_MT_POSITION_Y, 0,
			features->y_max, features->y_fuzz, 0);
		input_abs_set_res(input_dev, ABS_MT_POSITION_X,
				  features->x_resolution);
		input_abs_set_res(input_dev, ABS_MT_POSITION_Y,
				  features->y_resolution);
	}

	switch (features->type) {
	case INTUOSP2_BT:
	case INTUOSP2S_BT:
		input_dev->evbit[0] |= BIT_MASK(EV_SW);
		__set_bit(SW_MUTE_DEVICE, input_dev->swbit);

		if (wacom_wac->shared->touch->product == 0x361) {
			input_set_abs_params(input_dev, ABS_MT_POSITION_X,
					     0, 12440, 4, 0);
			input_set_abs_params(input_dev, ABS_MT_POSITION_Y,
					     0, 8640, 4, 0);
		}
		else if (wacom_wac->shared->touch->product == 0x360) {
			input_set_abs_params(input_dev, ABS_MT_POSITION_X,
					     0, 8960, 4, 0);
			input_set_abs_params(input_dev, ABS_MT_POSITION_Y,
					     0, 5920, 4, 0);
		}
		else if (wacom_wac->shared->touch->product == 0x393) {
			input_set_abs_params(input_dev, ABS_MT_POSITION_X,
					     0, 6400, 4, 0);
			input_set_abs_params(input_dev, ABS_MT_POSITION_Y,
					     0, 4000, 4, 0);
		}
		input_abs_set_res(input_dev, ABS_MT_POSITION_X, 40);
		input_abs_set_res(input_dev, ABS_MT_POSITION_Y, 40);

		fallthrough;

	case INTUOS5:
	case INTUOS5L:
	case INTUOSPM:
	case INTUOSPL:
	case INTUOS5S:
	case INTUOSPS:
		input_set_abs_params(input_dev, ABS_MT_TOUCH_MAJOR, 0, features->x_max, 0, 0);
		input_set_abs_params(input_dev, ABS_MT_TOUCH_MINOR, 0, features->y_max, 0, 0);
		input_mt_init_slots(input_dev, features->touch_max, INPUT_MT_POINTER);
		break;

	case WACOM_24HDT:
		input_set_abs_params(input_dev, ABS_MT_TOUCH_MAJOR, 0, features->x_max, 0, 0);
		input_set_abs_params(input_dev, ABS_MT_WIDTH_MAJOR, 0, features->x_max, 0, 0);
		input_set_abs_params(input_dev, ABS_MT_WIDTH_MINOR, 0, features->y_max, 0, 0);
		input_set_abs_params(input_dev, ABS_MT_ORIENTATION, 0, 1, 0, 0);
		fallthrough;

	case WACOM_27QHDT:
		if (wacom_wac->shared->touch->product == 0x32C ||
		    wacom_wac->shared->touch->product == 0xF6) {
			input_dev->evbit[0] |= BIT_MASK(EV_SW);
			__set_bit(SW_MUTE_DEVICE, input_dev->swbit);
			wacom_wac->has_mute_touch_switch = true;
			wacom_wac->is_soft_touch_switch = true;
		}
		fallthrough;

	case MTSCREEN:
	case MTTPC:
	case MTTPC_B:
	case TABLETPC2FG:
		input_mt_init_slots(input_dev, features->touch_max, INPUT_MT_DIRECT);
		fallthrough;

	case TABLETPC:
	case TABLETPCE:
		break;

	case INTUOSHT:
	case INTUOSHT2:
		input_dev->evbit[0] |= BIT_MASK(EV_SW);
		__set_bit(SW_MUTE_DEVICE, input_dev->swbit);
		fallthrough;

	case BAMBOO_PT:
	case BAMBOO_TOUCH:
		if (features->pktlen == WACOM_PKGLEN_BBTOUCH3) {
			input_set_abs_params(input_dev,
				     ABS_MT_TOUCH_MAJOR,
				     0, features->x_max, 0, 0);
			input_set_abs_params(input_dev,
				     ABS_MT_TOUCH_MINOR,
				     0, features->y_max, 0, 0);
		}
		input_mt_init_slots(input_dev, features->touch_max, INPUT_MT_POINTER);
		break;

	case BAMBOO_PAD:
		input_mt_init_slots(input_dev, features->touch_max,
				    INPUT_MT_POINTER);
		__set_bit(BTN_LEFT, input_dev->keybit);
		__set_bit(BTN_RIGHT, input_dev->keybit);
		break;
	}
	return 0;
}