From 07397df29e57cde5799af16e8f148ae10ed75285 Mon Sep 17 00:00:00 2001 From: Nipun Gupta Date: Sat, 28 Apr 2018 08:21:58 +0530 Subject: 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 Signed-off-by: Nipun Gupta Acked-by: Bjorn Helgaas # PCI parts Acked-by: Thierry Reding Reviewed-by: Greg Kroah-Hartman [hch: simplified host1x_dma_configure based on a comment from Thierry, rewrote changelog] Signed-off-by: Christoph Hellwig --- drivers/gpu/host1x/bus.c | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'drivers/gpu/host1x') 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, }; -- cgit v1.2.3-70-g09d2