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| author | Serge Semin <Sergey.Semin@baikalelectronics.ru> | 2020-05-22 02:07:54 +0200 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2020-05-22 14:45:55 +0200 |
| commit | 4fdc03a9bc47b6cf35a8821e545075d9f5f24906 (patch) | |
| tree | 6ce02afe43b14fc1d573d1eed8aa90e6bf1fbc49 /drivers/spi/spi-dw-mid.c | |
| parent | spi: dw: Discard unused void priv pointer (diff) | |
| download | linux-4fdc03a9bc47b6cf35a8821e545075d9f5f24906.tar.xz linux-4fdc03a9bc47b6cf35a8821e545075d9f5f24906.zip | |
spi: dw: Discard dma_width member of the dw_spi structure
This member has exactly the same value as n_bytes of the DW SPI private
data object, it's calculated at the same point of the transfer method,
n_bytes isn't changed during the whole transfer, and they even serve for
the same purpose - keep number of bytes per transfer word, though the
dma_width is used only to calculate the DMA source/destination addresses
width, which n_bytes could be also utilized for. Taking all of these
into account let's replace the dma_width member usage with n_bytes one
and remove the former.
Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Georgy Vlasov <Georgy.Vlasov@baikalelectronics.ru>
Cc: Ramil Zaripov <Ramil.Zaripov@baikalelectronics.ru>
Cc: Alexey Malahov <Alexey.Malahov@baikalelectronics.ru>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Paul Burton <paulburton@kernel.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: linux-mips@vger.kernel.org
Cc: devicetree@vger.kernel.org
Link: https://lore.kernel.org/r/20200522000806.7381-6-Sergey.Semin@baikalelectronics.ru
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/spi/spi-dw-mid.c')
| -rw-r--r-- | drivers/spi/spi-dw-mid.c | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/drivers/spi/spi-dw-mid.c b/drivers/spi/spi-dw-mid.c index a39bde9996a4..b1710132b7b2 100644 --- a/drivers/spi/spi-dw-mid.c +++ b/drivers/spi/spi-dw-mid.c @@ -133,10 +133,10 @@ static bool mid_spi_can_dma(struct spi_controller *master, return xfer->len > dws->fifo_len; } -static enum dma_slave_buswidth convert_dma_width(u32 dma_width) { - if (dma_width == 1) +static enum dma_slave_buswidth convert_dma_width(u8 n_bytes) { + if (n_bytes == 1) return DMA_SLAVE_BUSWIDTH_1_BYTE; - else if (dma_width == 2) + else if (n_bytes == 2) return DMA_SLAVE_BUSWIDTH_2_BYTES; return DMA_SLAVE_BUSWIDTH_UNDEFINED; @@ -172,7 +172,7 @@ static struct dma_async_tx_descriptor *dw_spi_dma_prepare_tx(struct dw_spi *dws, txconf.dst_addr = dws->dma_addr; txconf.dst_maxburst = 16; txconf.src_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES; - txconf.dst_addr_width = convert_dma_width(dws->dma_width); + txconf.dst_addr_width = convert_dma_width(dws->n_bytes); txconf.device_fc = false; dmaengine_slave_config(dws->txchan, &txconf); @@ -221,7 +221,7 @@ static struct dma_async_tx_descriptor *dw_spi_dma_prepare_rx(struct dw_spi *dws, rxconf.src_addr = dws->dma_addr; rxconf.src_maxburst = 16; rxconf.dst_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES; - rxconf.src_addr_width = convert_dma_width(dws->dma_width); + rxconf.src_addr_width = convert_dma_width(dws->n_bytes); rxconf.device_fc = false; dmaengine_slave_config(dws->rxchan, &rxconf); |