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spi: revert master->setup function removal for altera and nuc900

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Commit 24778be "spi: convert drivers to use bits_per_word_mask" removed
what appeared to be redundant code from many drivers. However, it
appears that in the spi-bitbang case, these functions are required by
the spi-bitbang core, even if they don't do anything. Restore them.

For 3.12, the spi-bitbang core should be adjusted not to require these
callbacks to exist if they don't need to do anything.

This is the equivalent of Michal Simek's patch "spi/xilinx: Revert
master->setup function removal", applied to other affected drivers.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
This commit is contained in:
Stephen Warren
2013-07-10 10:38:18 -06:00
committed by Mark Brown
parent ed893559c9
commit 103ccee4ef
2 changed files with 25 additions and 0 deletions
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12
drivers/spi/spi-altera.c
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@@ -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;