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| author | Nipun Gupta <nipun.gupta@nxp.com> | 2018-09-10 19:19:19 +0530 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2018-09-25 09:47:53 +0200 |
| commit | a259ed1618d2e7c212d9fe33f9eebcdc1f231338 (patch) | |
| tree | f374e5214aefc9cf3f106250cfbdcd91374f3fb9 /drivers/bus | |
| parent | eab03e2a1a3d9d354943aff5ae5e4254ee1ec967 (diff) | |
| download | linux-a259ed1618d2e7c212d9fe33f9eebcdc1f231338.tar.bz2 | |
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: Nipun Gupta <nipun.gupta@nxp.com>
Reviewed-by: Laurentiu Tudor <laurentiu.tudor@nxp.com>
Reviewed-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/bus')
| -rw-r--r-- | drivers/bus/fsl-mc/fsl-mc-bus.c | 15 |
1 files changed, 11 insertions, 4 deletions
diff --git a/drivers/bus/fsl-mc/fsl-mc-bus.c b/drivers/bus/fsl-mc/fsl-mc-bus.c index 5d8266c6571f..fa43c7dc6b9e 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); @@ -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() */ |