cns3xxx: add preliminary 4.9 support

[openwrt/staging/yousong.git] / target / linux / cns3xxx / patches-4.9 / 075-spi_support.patch

diff --git a/target/linux/cns3xxx/patches-4.9/075-spi_support.patch b/target/linux/cns3xxx/patches-4.9/075-spi_support.patch
new file mode 100644 (file)
index 0000000..8f1a1b6
--- /dev/null
+++ b/target/linux/cns3xxx/patches-4.9/075-spi_support.patch
@@ -0,0 +1,51 @@
+--- a/drivers/spi/Kconfig
++++ b/drivers/spi/Kconfig
+@@ -199,6 +199,13 @@ config SPI_CLPS711X
+         This enables dedicated general purpose SPI/Microwire1-compatible
+         master mode interface (SSI1) for CLPS711X-based CPUs.
+ 
++config SPI_CNS3XXX
++      tristate "CNS3XXX SPI controller"
++      depends on ARCH_CNS3XXX && SPI_MASTER
++      select SPI_BITBANG
++      help
++        This enables using the CNS3XXX SPI controller in master mode.
++
+ config SPI_COLDFIRE_QSPI
+       tristate "Freescale Coldfire QSPI controller"
+       depends on (M520x || M523x || M5249 || M525x || M527x || M528x || M532x)
+--- a/drivers/spi/Makefile
++++ b/drivers/spi/Makefile
+@@ -29,6 +29,7 @@ obj-$(CONFIG_SPI_BITBANG)            += spi-bitban
+ obj-$(CONFIG_SPI_BUTTERFLY)           += spi-butterfly.o
+ obj-$(CONFIG_SPI_CADENCE)             += spi-cadence.o
+ obj-$(CONFIG_SPI_CLPS711X)            += spi-clps711x.o
++obj-$(CONFIG_SPI_CNS3XXX)             += spi-cns3xxx.o
+ obj-$(CONFIG_SPI_COLDFIRE_QSPI)               += spi-coldfire-qspi.o
+ obj-$(CONFIG_SPI_DAVINCI)             += spi-davinci.o
+ obj-$(CONFIG_SPI_DLN2)                        += spi-dln2.o
+--- a/include/linux/spi/spi.h
++++ b/include/linux/spi/spi.h
+@@ -763,6 +763,10 @@ struct spi_transfer {
+       u32             speed_hz;
+ 
+       struct list_head transfer_list;
++
++#ifdef CONFIG_ARCH_CNS3XXX
++      unsigned        last_in_message_list;
++#endif
+ };
+ 
+ /**
+--- a/drivers/spi/spi.c
++++ b/drivers/spi/spi.c
+@@ -983,6 +983,9 @@ static int spi_transfer_one_message(stru
+       list_for_each_entry(xfer, &msg->transfers, transfer_list) {
+               trace_spi_transfer_start(msg, xfer);
+ 
++              xfer->last_in_message_list =
++                      list_is_last(&xfer->transfer_list, &msg->transfers);
++
+               spi_statistics_add_transfer_stats(statm, xfer, master);
+               spi_statistics_add_transfer_stats(stats, xfer, master);
+