From: Vinod Koul Date: Fri, 25 Jun 2021 05:22:11 +0000 (+0530) Subject: spi: core: add dma_map_dev for dma device X-Git-Tag: v5.15~607^2~19 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=b470e10eb43f19e08245cd87dd3192a8141cfbb5;p=platform%2Fkernel%2Flinux-starfive.git spi: core: add dma_map_dev for dma device Some controllers like qcom geni need the parent device to be used for dma mapping, so add a dma_map_dev field and let drivers fill this to be used as mapping device Signed-off-by: Vinod Koul Link: https://lore.kernel.org/r/20210625052213.32260-4-vkoul@kernel.org Signed-off-by: Mark Brown --- diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c index c296f08..35928d0 100644 --- a/drivers/spi/spi.c +++ b/drivers/spi/spi.c @@ -993,11 +993,15 @@ static int __spi_map_msg(struct spi_controller *ctlr, struct spi_message *msg) if (ctlr->dma_tx) tx_dev = ctlr->dma_tx->device->dev; + else if (ctlr->dma_map_dev) + tx_dev = ctlr->dma_map_dev; else tx_dev = ctlr->dev.parent; if (ctlr->dma_rx) rx_dev = ctlr->dma_rx->device->dev; + else if (ctlr->dma_map_dev) + rx_dev = ctlr->dma_map_dev; else rx_dev = ctlr->dev.parent; diff --git a/include/linux/spi/spi.h b/include/linux/spi/spi.h index 3ada361..97b8d12 100644 --- a/include/linux/spi/spi.h +++ b/include/linux/spi/spi.h @@ -588,6 +588,7 @@ struct spi_controller { bool (*can_dma)(struct spi_controller *ctlr, struct spi_device *spi, struct spi_transfer *xfer); + struct device *dma_map_dev; /* * These hooks are for drivers that want to use the generic