i2c: Fall back to emulated SMBus if the operation isn't supported natively

[mirror_ubuntu-bionic-kernel.git] / drivers / rapidio / Kconfig

diff --git a/drivers/rapidio/Kconfig b/drivers/rapidio/Kconfig
index bc871923879303f5771a27c83f7c148850682ddd..6194d35ebb9740c0af7f999dcb7b73aec75d91ca 100644 (file)
--- a/drivers/rapidio/Kconfig
+++ b/drivers/rapidio/Kconfig
@@ -22,6 +22,20 @@ config RAPIDIO_ENABLE_RX_TX_PORTS
          ports for Input/Output direction to allow other traffic
          than Maintenance transfers.
 
+config RAPIDIO_DMA_ENGINE
+       bool "DMA Engine support for RapidIO"
+       depends on RAPIDIO
+       select DMADEVICES
+       select DMA_ENGINE
+       help
+         Say Y here if you want to use DMA Engine frameork for RapidIO data
+         transfers to/from target RIO devices. RapidIO uses NREAD and
+         NWRITE (NWRITE_R, SWRITE) requests to transfer data between local
+         memory and memory on remote target device. You need a DMA controller
+         capable to perform data transfers to/from RapidIO.
+
+         If you are unsure about this, say Y here.
+
 config RAPIDIO_DEBUG
        bool "RapidIO subsystem debug messages"
        depends on RAPIDIO