diff options
Diffstat (limited to 'drivers/spi')
| -rw-r--r-- | drivers/spi/spi-altera.c | 12 | ||||
| -rw-r--r-- | drivers/spi/spi-nuc900.c | 13 | ||||
| -rw-r--r-- | drivers/spi/spi-s3c64xx.c | 3 | ||||
| -rw-r--r-- | drivers/spi/spi-xilinx.c | 16 |
4 files changed, 44 insertions, 0 deletions
diff --git a/drivers/spi/spi-altera.c b/drivers/spi/spi-altera.c index 8a6bb37..81b9adb 100644 --- a/drivers/spi/spi-altera.c +++ b/drivers/spi/spi-altera.c @@ -103,6 +103,16 @@ static void altera_spi_chipsel(struct spi_device *spi, int value) } } +static int altera_spi_setupxfer(struct spi_device *spi, struct spi_transfer *t) +{ + return 0; +} + +static int altera_spi_setup(struct spi_device *spi) +{ + return 0; +} + static inline unsigned int hw_txbyte(struct altera_spi *hw, int count) { if (hw->tx) { @@ -221,6 +231,7 @@ static int altera_spi_probe(struct platform_device *pdev) master->bus_num = pdev->id; master->num_chipselect = 16; master->mode_bits = SPI_CS_HIGH; + master->setup = altera_spi_setup; hw = spi_master_get_devdata(master); platform_set_drvdata(pdev, hw); @@ -229,6 +240,7 @@ static int altera_spi_probe(struct platform_device *pdev) hw->bitbang.master = spi_master_get(master); if (!hw->bitbang.master) return err; + hw->bitbang.setup_transfer = altera_spi_setupxfer; hw->bitbang.chipselect = altera_spi_chipsel; hw->bitbang.txrx_bufs = altera_spi_txrx; diff --git a/drivers/spi/spi-nuc900.c b/drivers/spi/spi-nuc900.c index 2ad3d74..150d854 100644 --- a/drivers/spi/spi-nuc900.c +++ b/drivers/spi/spi-nuc900.c @@ -174,6 +174,17 @@ static void nuc900_spi_gobusy(struct nuc900_spi *hw) spin_unlock_irqrestore(&hw->lock, flags); } +static int nuc900_spi_setupxfer(struct spi_device *spi, + struct spi_transfer *t) +{ + return 0; +} + +static int nuc900_spi_setup(struct spi_device *spi) +{ + return 0; +} + static inline unsigned int hw_txbyte(struct nuc900_spi *hw, int count) { return hw->tx ? hw->tx[count] : 0; @@ -366,8 +377,10 @@ static int nuc900_spi_probe(struct platform_device *pdev) master->num_chipselect = hw->pdata->num_cs; master->bus_num = hw->pdata->bus_num; hw->bitbang.master = hw->master; + hw->bitbang.setup_transfer = nuc900_spi_setupxfer; hw->bitbang.chipselect = nuc900_spi_chipsel; hw->bitbang.txrx_bufs = nuc900_spi_txrx; + hw->bitbang.master->setup = nuc900_spi_setup; hw->res = platform_get_resource(pdev, IORESOURCE_MEM, 0); if (hw->res == NULL) { diff --git a/drivers/spi/spi-s3c64xx.c b/drivers/spi/spi-s3c64xx.c index eb53df2..63e2070 100644 --- a/drivers/spi/spi-s3c64xx.c +++ b/drivers/spi/spi-s3c64xx.c @@ -434,6 +434,9 @@ static int s3c64xx_spi_prepare_transfer(struct spi_master *spi) dma_cap_mask_t mask; int ret; + if (is_polling(sdd)) + return 0; + dma_cap_zero(mask); dma_cap_set(DMA_SLAVE, mask); diff --git a/drivers/spi/spi-xilinx.c b/drivers/spi/spi-xilinx.c index fb56fcf..09a9428 100644 --- a/drivers/spi/spi-xilinx.c +++ b/drivers/spi/spi-xilinx.c @@ -233,6 +233,21 @@ static int xilinx_spi_setup_transfer(struct spi_device *spi, return 0; } +static int xilinx_spi_setup(struct spi_device *spi) +{ + /* always return 0, we can not check the number of bits. + * There are cases when SPI setup is called before any driver is + * there, in that case the SPI core defaults to 8 bits, which we + * do not support in some cases. But if we return an error, the + * SPI device would not be registered and no driver can get hold of it + * When the driver is there, it will call SPI setup again with the + * correct number of bits per transfer. + * If a driver setups with the wrong bit number, it will fail when + * it tries to do a transfer + */ + return 0; +} + static void xilinx_spi_fill_tx_fifo(struct xilinx_spi *xspi) { u8 sr; @@ -360,6 +375,7 @@ struct spi_master *xilinx_spi_init(struct device *dev, struct resource *mem, xspi->bitbang.chipselect = xilinx_spi_chipselect; xspi->bitbang.setup_transfer = xilinx_spi_setup_transfer; xspi->bitbang.txrx_bufs = xilinx_spi_txrx_bufs; + xspi->bitbang.master->setup = xilinx_spi_setup; init_completion(&xspi->done); if (!request_mem_region(mem->start, resource_size(mem), |