spi: Introduce internal spi_xfer_is_dma_mapped() helper
authorAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Fri, 31 May 2024 19:42:33 +0000 (22:42 +0300)
committerMark Brown <broonie@kernel.org>
Mon, 10 Jun 2024 11:48:57 +0000 (12:48 +0100)
There are few drivers that use the same pattern to check if the transfer
is DMA mapped or not. Provide a helper.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Tested-by: Neil Armstrong <neil.armstrong@linaro.org> # on SM8650-QRD
Link: https://lore.kernel.org/r/20240531194723.1761567-2-andriy.shevchenko@linux.intel.com
Reviewed-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Reviewed-by: Serge Semin <fancer.lancer@gmail.com>
Tested-by: NĂ­colas F. R. A. Prado <nfraprado@collabora.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
drivers/spi/internals.h

index 4a28a8395552d29d2ac2200b82346752ad07d4b8..47a87c2a6979667823f673a248af0fd1263bfbec 100644 (file)
@@ -40,4 +40,12 @@ static inline void spi_unmap_buf(struct spi_controller *ctlr,
 }
 #endif /* CONFIG_HAS_DMA */
 
+static inline bool spi_xfer_is_dma_mapped(struct spi_controller *ctlr,
+                                         struct spi_device *spi,
+                                         struct spi_transfer *xfer)
+{
+       return ctlr->can_dma && ctlr->can_dma(ctlr, spi, xfer) &&
+              ctlr->cur_msg_mapped;
+}
+
 #endif /* __LINUX_SPI_INTERNALS_H */