58 lines
1.7 KiB
Diff
58 lines
1.7 KiB
Diff
--- a/drivers/spi/Kconfig
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+++ b/drivers/spi/Kconfig
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@@ -142,6 +142,13 @@ config SPI_CLPS711X
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This enables dedicated general purpose SPI/Microwire1-compatible
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master mode interface (SSI1) for CLPS711X-based CPUs.
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+config SPI_CNS3XXX
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+ tristate "CNS3XXX SPI controller"
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+ depends on ARCH_CNS3XXX && SPI_MASTER
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+ select SPI_BITBANG
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+ help
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+ This enables using the CNS3XXX SPI controller in master mode.
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+
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config SPI_COLDFIRE_QSPI
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tristate "Freescale Coldfire QSPI controller"
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depends on (M520x || M523x || M5249 || M525x || M527x || M528x || M532x)
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--- a/drivers/spi/Makefile
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+++ b/drivers/spi/Makefile
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@@ -20,6 +20,7 @@ obj-$(CONFIG_SPI_BFIN5XX) += spi-bfin5x
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obj-$(CONFIG_SPI_BFIN_SPORT) += spi-bfin-sport.o
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obj-$(CONFIG_SPI_BITBANG) += spi-bitbang.o
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obj-$(CONFIG_SPI_BUTTERFLY) += spi-butterfly.o
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+obj-$(CONFIG_SPI_CNS3XXX) += spi-cns3xxx.o
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obj-$(CONFIG_SPI_CLPS711X) += spi-clps711x.o
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obj-$(CONFIG_SPI_COLDFIRE_QSPI) += spi-coldfire-qspi.o
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obj-$(CONFIG_SPI_DAVINCI) += spi-davinci.o
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--- a/drivers/spi/spi-bitbang.c
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+++ b/drivers/spi/spi-bitbang.c
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@@ -328,6 +328,12 @@ static void bitbang_work(struct work_str
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*/
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if (!m->is_dma_mapped)
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t->rx_dma = t->tx_dma = 0;
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+
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+ if (t->transfer_list.next == &m->transfers)
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+ t->last_in_message_list = 1;
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+ else
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+ t->last_in_message_list = 0;
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+
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status = bitbang->txrx_bufs(spi, t);
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}
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if (status > 0)
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--- a/include/linux/spi/spi.h
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+++ b/include/linux/spi/spi.h
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@@ -524,6 +524,13 @@ struct spi_transfer {
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u32 speed_hz;
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struct list_head transfer_list;
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+
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+#ifdef CONFIG_ARCH_CNS3XXX
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+ unsigned last_in_message_list;
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+#ifdef CONFIG_SPI_CNS3XXX_2IOREAD
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+ u8 dio_read;
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+#endif
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+#endif
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};
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/**
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