SUN6I_INT_STA_REG
sun6i_spi_write(sspi, SUN6I_INT_STA_REG, ~0);
u32 status = sun6i_spi_read(sspi, SUN6I_INT_STA_REG);
sun6i_spi_write(sspi, SUN6I_INT_STA_REG, SUN6I_INT_CTL_TC);
sun6i_spi_write(sspi, SUN6I_INT_STA_REG, SUN6I_INT_CTL_RF_RDY);
sun6i_spi_write(sspi, SUN6I_INT_STA_REG, SUN6I_INT_CTL_TF_ERQ);