diff options
Diffstat (limited to 'target/linux/cns3xxx/patches-3.18/075-spi_support.patch')
| -rw-r--r-- | target/linux/cns3xxx/patches-3.18/075-spi_support.patch | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/target/linux/cns3xxx/patches-3.18/075-spi_support.patch b/target/linux/cns3xxx/patches-3.18/075-spi_support.patch new file mode 100644 index 0000000..16a91f1 --- /dev/null +++ b/target/linux/cns3xxx/patches-3.18/075-spi_support.patch @@ -0,0 +1,55 @@ +--- a/drivers/spi/Kconfig ++++ b/drivers/spi/Kconfig +@@ -171,6 +171,13 @@ 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 +@@ -25,6 +25,7 @@ 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_DESIGNWARE) += spi-dw.o +--- a/drivers/spi/spi-bitbang.c ++++ b/drivers/spi/spi-bitbang.c +@@ -332,6 +332,10 @@ static int spi_bitbang_transfer_one(stru + */ + if (!m->is_dma_mapped) + t->rx_dma = t->tx_dma = 0; ++ ++ t->last_in_message_list = ++ list_is_last(&t->transfer_list, &m->transfers); ++ + status = bitbang->txrx_bufs(spi, t); + } + if (status > 0) +--- a/include/linux/spi/spi.h ++++ b/include/linux/spi/spi.h +@@ -628,6 +628,13 @@ struct spi_transfer { + u32 speed_hz; + + struct list_head transfer_list; ++ ++#ifdef CONFIG_ARCH_CNS3XXX ++ unsigned last_in_message_list; ++#ifdef CONFIG_SPI_CNS3XXX_2IOREAD ++ u8 dio_read; ++#endif ++#endif + }; + + /** |