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spi: Revert "spi/xilinx: Remove iowrite/ioread wrappers" 

This reverts commit 99082eab63 since it
breaks the build due to differing implementations of iowrite() and
ioread().

Signed-off-by: Mark Brown <broonie@kernel.org>
hifive-unleashed-5.1
Mark Brown 2015-01-30 13:42:00 +01:00
parent eb25f16c6f
commit 0635287a30
1 changed files with 24 additions and 4 deletions
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28
drivers/spi/spi-xilinx.c
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@ -95,6 +95,26 @@ struct xilinx_spi {
void (*write_fn)(u32, void __iomem *);
};
static void xspi_write32(u32 val, void __iomem *addr)
{
iowrite32(val, addr);
}
static unsigned int xspi_read32(void __iomem *addr)
{
return ioread32(addr);
}
static void xspi_write32_be(u32 val, void __iomem *addr)
{
iowrite32be(val, addr);
}
static unsigned int xspi_read32_be(void __iomem *addr)
{
return ioread32be(addr);
}
static void xilinx_spi_tx(struct xilinx_spi *xspi)
{
if (!xspi->tx_ptr) {
@ -388,15 +408,15 @@ static int xilinx_spi_probe(struct platform_device *pdev)
* Setup little endian helper functions first and try to use them
* and check if bit was correctly setup or not.
*/
xspi->read_fn = ioread32;
xspi->write_fn = iowrite32;
xspi->read_fn = xspi_read32;
xspi->write_fn = xspi_write32;
xspi->write_fn(XSPI_CR_LOOP, xspi->regs + XSPI_CR_OFFSET);
tmp = xspi->read_fn(xspi->regs + XSPI_CR_OFFSET);
tmp &= XSPI_CR_LOOP;
if (tmp != XSPI_CR_LOOP) {
xspi->read_fn = ioread32be;
xspi->write_fn = iowrite32be;
xspi->read_fn = xspi_read32_be;
xspi->write_fn = xspi_write32_be;
}
master->bits_per_word_mask = SPI_BPW_MASK(bits_per_word);