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charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org With CDX bus supported in SMMU, devices on CDX bus can be configured to support DMA configuration. This change adds the dma configure callback for CDX bus. Signed-off-by: Nipun Gupta --- drivers/bus/cdx/cdx.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/drivers/bus/cdx/cdx.c b/drivers/bus/cdx/cdx.c index 5a366f4ae69c..b2a7e0b34df8 100644 --- a/drivers/bus/cdx/cdx.c +++ b/drivers/bus/cdx/cdx.c @@ -57,6 +57,7 @@ #include #include +#include #include #include @@ -180,10 +181,26 @@ static void cdx_remove(struct device *dev) cdx_drv->remove(cdx_dev); } +static int cdx_dma_configure(struct device *dev) +{ + struct cdx_device *cdx_dev = to_cdx_device(dev); + u32 input_id = cdx_dev->req_id; + int ret; + + ret = of_dma_configure_id(dev, dev->parent->of_node, 0, &input_id); + if (ret) { + dev_err(dev, "of_dma_configure_id() failed\n"); + return ret; + } + + return 0; +} + struct bus_type cdx_bus_type = { .name = "cdx", .match = cdx_bus_match, .remove = cdx_remove, + .dma_configure = cdx_dma_configure, }; EXPORT_SYMBOL_GPL(cdx_bus_type); -- 2.25.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel