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| author |   Nipun Gupta <nipun.gupta@nxp.com> | 2018-04-28 08:21:58 +0530 |
|---|---|---|
| committer |   Christoph Hellwig <hch@lst.de> | 2018-05-03 16:22:18 +0200 |
| commit | 07397df29e57cde5799af16e8f148ae10ed75285 (patch) | |
| tree | 7f4e2606ec8d6a26a5433cb4dac32338178092fd /drivers/gpu/host1x | |
| parent | swiotlb: fix inversed DMA_ATTR_NO_WARN test (diff) | |
| download | wireguard-linux-07397df29e57cde5799af16e8f148ae10ed75285.tar.xz wireguard-linux-07397df29e57cde5799af16e8f148ae10ed75285.zip | |
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.c | 6 |
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, }; |