zephyr_library() zephyr_library_sources(i2s_common.c) zephyr_library_sources_ifdef(CONFIG_I2S_SAM_SSC i2s_sam_ssc.c) zephyr_library_sources_ifdef(CONFIG_I2S_CAVS i2s_cavs.c) zephyr_library_sources_ifdef(CONFIG_USERSPACE i2s_handlers.c) zephyr_library_sources_ifdef(CONFIG_I2S_STM32 i2s_ll_stm32.c)