fsl_espi_read_reg
u32 val = fsl_espi_read_reg(espi, ESPI_SPIRF);
cs->hw_mode = fsl_espi_read_reg(espi, ESPI_SPMODEx(spi_get_chipselect(spi, 0)));
loop_mode = fsl_espi_read_reg(espi, ESPI_SPMODE);
events = fsl_espi_read_reg(espi, ESPI_SPIE);
events = fsl_espi_read_reg(espi, ESPI_SPIE);
mask = fsl_espi_read_reg(espi, ESPI_SPIM);
regval = fsl_espi_read_reg(espi, ESPI_SPMODE);
regval = fsl_espi_read_reg(espi, ESPI_SPMODE);