1 files changed, 5 insertions, 0 deletions

diff --git a/include/linux/spi/spi.h b/include/linux/spi/spi.h
index ba0dee9d05a3..199b04245187 100644
--- a/include/linux/spi/spi.h
+++ b/include/linux/spi/spi.h
@@ -372,6 +372,9 @@ static inline void spi_unregister_driver(struct spi_driver *sdrv)
  * @dma_rx: DMA receive channel
  * @dummy_rx: dummy receive buffer for full-duplex devices
  * @dummy_tx: dummy transmit buffer for full-duplex devices
+ * @fw_translate_cs: If the boot firmware uses different numbering scheme
+ *      what Linux expects, this optional hook can be used to translate
+ *      between the two.
  *
  * Each SPI master controller can communicate with one or more @spi_device
  * children.  These make a small bus, sharing MOSI, MISO and SCK signals
@@ -542,6 +545,8 @@ struct spi_master {
         /* dummy data for full duplex devices */
         void                    *dummy_rx;
         void                    *dummy_tx;
+
+        int (*fw_translate_cs)(struct spi_master *master, unsigned cs);
 };
 
 static inline void *spi_master_get_devdata(struct spi_master *master)