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spi: dw: Move dw_spi_can_dma()

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Move dw_spi_can_dma() implementation below dw_spi_dma_convert_width()
for handing compile dependency in future patches.

* tested on Baikal-T1 based system with DW SPI-looped back interface
transferring a chunk of data with DFS:8,12,16.

Signed-off-by: Joy Chakraborty <joychakr@google.com
Reviewed-by: Serge Semin <fancer.lancer@gmail.com
Tested-by: Serge Semin <fancer.lancer@gmail.com
Link: https://lore.kernel.org/r/20230427123314.1997152-3-joychakr@google.com
Signed-off-by: Mark Brown <broonie@kernel.org
This commit is contained in:
Joy Chakraborty 2023-04-27 12:33:11 +00:00 committed by Mark Brown
parent 5147d5bfdd
commit d2ae5d4246
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GPG Key ID: 24D68B725D5487D0
1 changed files with 8 additions and 8 deletions
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16
drivers/spi/spi-dw-dma.c
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@ -198,14 +198,6 @@ static irqreturn_t dw_spi_dma_transfer_handler(struct dw_spi *dws)
return IRQ_HANDLED;
}
static bool dw_spi_can_dma(struct spi_controller *master,
struct spi_device *spi, struct spi_transfer *xfer)
{
struct dw_spi *dws = spi_controller_get_devdata(master);
return xfer->len > dws->fifo_len;
}
static enum dma_slave_buswidth dw_spi_dma_convert_width(u8 n_bytes)
{
switch (n_bytes) {
@ -220,6 +212,14 @@ static enum dma_slave_buswidth dw_spi_dma_convert_width(u8 n_bytes)
}
}
static bool dw_spi_can_dma(struct spi_controller *master,
struct spi_device *spi, struct spi_transfer *xfer)
{
struct dw_spi *dws = spi_controller_get_devdata(master);
return xfer->len > dws->fifo_len;
}
static int dw_spi_dma_wait(struct dw_spi *dws, unsigned int len, u32 speed)
{
unsigned long long ms;