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Message-Id: <1523960514-25457-6-git-send-email-nipun.gupta@nxp.com>
Date: Tue, 17 Apr 2018 15:51:53 +0530
From: Nipun Gupta <nipun.gupta@....com>
To: robin.murphy@....com, will.deacon@....com, mark.rutland@....com,
catalin.marinas@....com
Cc: hch@....de, gregkh@...uxfoundation.org, joro@...tes.org,
robh+dt@...nel.org, m.szyprowski@...sung.com, shawnguo@...nel.org,
frowand.list@...il.com, bhelgaas@...gle.com,
iommu@...ts.linux-foundation.org, linux-kernel@...r.kernel.org,
devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
linuxppc-dev@...ts.ozlabs.org, linux-pci@...r.kernel.org,
bharat.bhushan@....com, stuyoder@...il.com,
laurentiu.tudor@....com, leoyang.li@....com,
Nipun Gupta <nipun.gupta@....com>
Subject: [PATCH 5/6 v2] bus: fsl-mc: supoprt dma configure for devices on fsl-mc bus
Signed-off-by: Nipun Gupta <nipun.gupta@....com>
---
drivers/bus/fsl-mc/fsl-mc-bus.c | 16 ++++++++++++----
1 file changed, 12 insertions(+), 4 deletions(-)
diff --git a/drivers/bus/fsl-mc/fsl-mc-bus.c b/drivers/bus/fsl-mc/fsl-mc-bus.c
index 5d8266c..624828b 100644
--- a/drivers/bus/fsl-mc/fsl-mc-bus.c
+++ b/drivers/bus/fsl-mc/fsl-mc-bus.c
@@ -127,6 +127,16 @@ static int fsl_mc_bus_uevent(struct device *dev, struct kobj_uevent_env *env)
return 0;
}
+static int fsl_mc_dma_configure(struct device *dev)
+{
+ struct device *dma_dev = dev;
+
+ while (dev_is_fsl_mc(dma_dev))
+ dma_dev = dma_dev->parent;
+
+ return of_dma_configure(dev, dma_dev->of_node, 0);
+}
+
static ssize_t modalias_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
@@ -148,6 +158,7 @@ struct bus_type fsl_mc_bus_type = {
.name = "fsl-mc",
.match = fsl_mc_bus_match,
.uevent = fsl_mc_bus_uevent,
+ .dma_configure = fsl_mc_dma_configure,
.dev_groups = fsl_mc_dev_groups,
};
EXPORT_SYMBOL_GPL(fsl_mc_bus_type);
@@ -616,6 +627,7 @@ int fsl_mc_device_add(struct fsl_mc_obj_desc *obj_desc,
mc_dev->icid = parent_mc_dev->icid;
mc_dev->dma_mask = FSL_MC_DEFAULT_DMA_MASK;
mc_dev->dev.dma_mask = &mc_dev->dma_mask;
+ mc_dev->dev.coherent_dma_mask = mc_dev->dma_mask;
dev_set_msi_domain(&mc_dev->dev,
dev_get_msi_domain(&parent_mc_dev->dev));
}
@@ -633,10 +645,6 @@ int fsl_mc_device_add(struct fsl_mc_obj_desc *obj_desc,
goto error_cleanup_dev;
}
- /* Objects are coherent, unless 'no shareability' flag set. */
- if (!(obj_desc->flags & FSL_MC_OBJ_FLAG_NO_MEM_SHAREABILITY))
- arch_setup_dma_ops(&mc_dev->dev, 0, 0, NULL, true);
-
/*
* The device-specific probe callback will get invoked by device_add()
*/
--
1.9.1
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