With ACPI we need to describe the settings of the SPI bus. Add enums to handle this.
Signed-off-by: Simon Glass sjg@chromium.org ---
include/spi.h | 33 +++++++++++++++++++++++++++++++++ 1 file changed, 33 insertions(+)
diff --git a/include/spi.h b/include/spi.h index ef5d87f476..77fa3800fd 100644 --- a/include/spi.h +++ b/include/spi.h @@ -62,6 +62,39 @@ struct dm_spi_slave_platdata { uint mode; };
+/** + * enum spi_clock_phase - indicates the clock phase to use for SPI (CPHA) + * + * @SPI_CLOCK_PHASE_FIRST: Data sampled on the first phase + * @SPI_CLOCK_PHASE_SECOND: Data sampled on the second phase + */ +enum spi_clock_phase { + SPI_CLOCK_PHASE_FIRST, + SPI_CLOCK_PHASE_SECOND +}; + +/** + * enum spi_wire_mode - indicates the number of wires used for SPI + * + * @SPI_4_WIRE_MODE: Normal bidirectional mode with MOSI and MISO + * @SPI_3_WIRE_MODE: Unidirectional version with a single data line SISO + */ +enum spi_wire_mode { + SPI_4_WIRE_MODE, + SPI_3_WIRE_MODE +}; + +/** + * enum spi_polarity - indicates the polarity of the SPI bus (CPOL) + * + * @SPI_POLARITY_LOW: Clock is low in idle state + * @SPI_POLARITY_HIGH: Clock is high in idle state + */ +enum spi_polarity { + SPI_POLARITY_LOW, + SPI_POLARITY_HIGH +}; + #endif /* CONFIG_DM_SPI */
/**