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authorNipun Gupta <nipun.gupta@nxp.com>2018-04-28 08:21:58 +0530
committerChristoph Hellwig <hch@lst.de>2018-05-03 16:22:18 +0200
commit07397df29e57cde5799af16e8f148ae10ed75285 (patch)
tree7f4e2606ec8d6a26a5433cb4dac32338178092fd /drivers/gpu/host1x
parent892a0be43edd63e1cd228af3453a064e9e94f08e (diff)
dma-mapping: move dma configuration to bus infrastructure
ACPI/OF support for configuration of DMA is a bus specific aspect, and thus should be configured by the bus. Introduces a 'dma_configure' bus method so that busses can control their DMA capabilities. Also update the PCI, Platform, ACPI and host1x buses to use the new method. Suggested-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Nipun Gupta <nipun.gupta@nxp.com> Acked-by: Bjorn Helgaas <bhelgaas@google.com> # PCI parts Acked-by: Thierry Reding <treding@nvidia.com> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> [hch: simplified host1x_dma_configure based on a comment from Thierry, rewrote changelog] Signed-off-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'drivers/gpu/host1x')
-rw-r--r--drivers/gpu/host1x/bus.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/gpu/host1x/bus.c b/drivers/gpu/host1x/bus.c
index 88a3558b7916..0c79bafae96c 100644
--- a/drivers/gpu/host1x/bus.c
+++ b/drivers/gpu/host1x/bus.c
@@ -314,6 +314,11 @@ static int host1x_device_match(struct device *dev, struct device_driver *drv)
return strcmp(dev_name(dev), drv->name) == 0;
}
+static int host1x_dma_configure(struct device *dev)
+{
+ return of_dma_configure(dev, dev->of_node);
+}
+
static const struct dev_pm_ops host1x_device_pm_ops = {
.suspend = pm_generic_suspend,
.resume = pm_generic_resume,
@@ -326,6 +331,7 @@ static const struct dev_pm_ops host1x_device_pm_ops = {
struct bus_type host1x_bus_type = {
.name = "host1x",
.match = host1x_device_match,
+ .dma_configure = host1x_dma_configure,
.pm = &host1x_device_pm_ops,
.force_dma = true,
};