diff options
Diffstat (limited to 'include/linux/spi')
| -rw-r--r-- | include/linux/spi/spi.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/include/linux/spi/spi.h b/include/linux/spi/spi.h index ba0dee9d05a3..06ea1c3a04d7 100644 --- a/include/linux/spi/spi.h +++ b/include/linux/spi/spi.h @@ -304,6 +304,8 @@ static inline void spi_unregister_driver(struct spi_driver *sdrv) * @min_speed_hz: Lowest supported transfer speed * @max_speed_hz: Highest supported transfer speed * @flags: other constraints relevant to this driver + * @max_transfer_size: function that returns the max transfer size for + * a &spi_device; may be %NULL, so the default %SIZE_MAX will be used. * @bus_lock_spinlock: spinlock for SPI bus locking * @bus_lock_mutex: mutex for SPI bus locking * @bus_lock_flag: indicates that the SPI bus is locked for exclusive use @@ -372,6 +374,9 @@ 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 +547,8 @@ 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) |