From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Date: Fri, 31 May 2024 19:42:33 +0000 (+0300)
Subject: spi: Introduce internal spi_xfer_is_dma_mapped() helper
X-Git-Tag: io_uring-6.11-20240722~113^2~27^2~7
X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=0535cf64e4b1ead224fbbe1c25c81221a298c5e4;p=linux-block.git

spi: Introduce internal spi_xfer_is_dma_mapped() helper

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: Nícolas F. R. A. Prado <nfraprado@collabora.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
---

diff --git a/drivers/spi/internals.h b/drivers/spi/internals.h
index 4a28a8395552..47a87c2a6979 100644
--- a/drivers/spi/internals.h
+++ b/drivers/spi/internals.h
@@ -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 */