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Commit a259ed16 authored by Nipun Gupta's avatar Nipun Gupta Committed by Joerg Roedel
Browse files

bus/fsl-mc: support dma configure for devices on fsl-mc bus 



This patch adds support of dma configuration for devices on fsl-mc
bus using 'dma_configure' callback for busses. Also, directly calling
arch_setup_dma_ops is removed from the fsl-mc bus.

Signed-off-by: default avatarNipun Gupta <nipun.gupta@nxp.com>
Reviewed-by: default avatarLaurentiu Tudor <laurentiu.tudor@nxp.com>
Reviewed-by: default avatarRobin Murphy <robin.murphy@arm.com>
Signed-off-by: default avatarJoerg Roedel <jroedel@suse.de>
parent eab03e2a

drivers/bus/fsl-mc/fsl-mc-bus.c

+11 −4
Original line number Diff line number Diff line
@@ -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);
@@ -633,10 +644,6 @@ 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()

	 */