openwrt/target/linux/cns3xxx/patches-4.19/075-spi_support.patch
Koen Vandeputte c6bebe1a94 cns3xxx: add support for kernel 4.19
Signed-off-by: Koen Vandeputte <koen.vandeputte@ncentric.com>
2019-01-28 18:17:32 +01:00

52 lines
1.6 KiB
Diff

--- a/drivers/spi/Kconfig
+++ b/drivers/spi/Kconfig
@@ -181,6 +181,13 @@ 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
@@ -28,6 +28,7 @@ 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
@@ -795,6 +795,10 @@ 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
@@ -1018,6 +1018,9 @@ 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, ctlr);
spi_statistics_add_transfer_stats(stats, xfer, ctlr);