spi: add support for DLN-2 USB-SPI adapter

This adds support for Diolan DLN2 USB-SPI adapter.

Information about the USB protocol interface can be found in the
Programmer's Reference Manual [1], see section 5.4.6 for the SPI
master module commands and responses.

[1] https://www.diolan.com/downloads/dln-api-manual.pdf

Signed-off-by: Laurentiu Palcu <laurentiu.palcu@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/drivers/spi/Kconfig b/drivers/spi/Kconfig
index 99829985c1a194ebe6edc0e73912077bade693d3..f60f37c34afa71550d8af31f370e43816999c7ec 100644 (file)
--- a/drivers/spi/Kconfig
+++ b/drivers/spi/Kconfig
@@ -185,6 +185,16 @@ config SPI_DAVINCI
        help
          SPI master controller for DaVinci/DA8x/OMAP-L/AM1x SPI modules.
 
+config SPI_DLN2
+       tristate "Diolan DLN-2 USB SPI adapter"
+       depends on MFD_DLN2
+       help
+         If you say yes to this option, support will be included for Diolan
+         DLN2, a USB to SPI interface.
+
+         This driver can also be built as a module.  If so, the module
+         will be called spi-dln2.
+
 config SPI_EFM32
        tristate "EFM32 SPI controller"
        depends on OF && ARM && (ARCH_EFM32 || COMPILE_TEST)

diff --git a/drivers/spi/Makefile b/drivers/spi/Makefile
index 6b9d2ac629cce6ca7e886df22c2fb5b02874373c..df5e23c5846b59f07f518f1d607617337c8e0f77 100644 (file)
--- a/drivers/spi/Makefile
+++ b/drivers/spi/Makefile
@@ -27,6 +27,7 @@ obj-$(CONFIG_SPI_CADENCE)             += spi-cadence.o
 obj-$(CONFIG_SPI_CLPS711X)             += spi-clps711x.o
 obj-$(CONFIG_SPI_COLDFIRE_QSPI)                += spi-coldfire-qspi.o
 obj-$(CONFIG_SPI_DAVINCI)              += spi-davinci.o
+obj-$(CONFIG_SPI_DLN2)                 += spi-dln2.o
 obj-$(CONFIG_SPI_DESIGNWARE)           += spi-dw.o
 obj-$(CONFIG_SPI_DW_MMIO)              += spi-dw-mmio.o
 obj-$(CONFIG_SPI_DW_PCI)               += spi-dw-midpci.o

diff --cc drivers/spi/spi-dln2.c
Simple merge