decon_irq_handler
ret = decon_conf_irq(ctx, "vsync", decon_irq_handler, 0);
ret = decon_conf_irq(ctx, "lcd_sys", decon_irq_handler, 0);
ret = devm_request_irq(dev, ret, decon_irq_handler, 0, "drm_decon", ctx);