On Aug 26, 2013, at 9:39 AM, Marek Szyprowski wrote:
> +/**
> + * of_reserved_mem_device_init() - assign reserved memory region to given device
> + *
> + * This function assign memory region pointed by "memory-region" device tree
> + * property to the given device.
> + */
> +void of_reserved_mem_device_init(struct device *dev)
> +{
> + struct reserved_mem *region = get_dma_memory_region(dev);
> + if (!region)
> + return;
> +
> + if (region->cma) {
> + dev_set_cma_area(dev, region->cma);
> + pr_info("Assigned CMA %s to %s device\n", region->name,
> + dev_name(dev));
> + } else {
I don't think its a reasonable assumption that a 'reserved-memory-region' is necessary dma coherent if its not cma.
> + if (dma_declare_coherent_memory(dev, region->base, region->base,
> + region->size, DMA_MEMORY_MAP | DMA_MEMORY_EXCLUSIVE) != 0)
> + pr_info("Declared reserved memory %s to %s device\n",
> + region->name, dev_name(dev));
> + }
> +}
> +
- k
--
Employee of Qualcomm Innovation Center, Inc.
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation
--
To unsubscribe from this list: send the line "unsubscribe devicetree" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
