shinys000114/linux
1
0
Fork 0
mirror of https://github.com/hardkernel/linux.git synced 2026-06-07 19:30:30 +09:00
Code Issues Packages Projects Releases Wiki Activity

media: rockchip: isp1: support get continuous memory from specific CMA region

Browse Source 
If no IOMMU support for ISP, we prefer to alloc continuous
physical memory from our reserved CMA region than from system
reserved.

Change-Id: I1e598ee7309c9c53254649f5267a1e7f515c6361
Signed-off-by: Cai YiWei <cyw@rock-chips.com>
This commit is contained in:
Cai YiWei
2019-05-15 17:01:55 +08:00
committed by Tao Huang
parent 0cbd040137
commit 7edacbdede
1 changed files with 26 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

26
drivers/media/platform/rockchip/isp1/dev.c
View File

@@ -40,6 +40,7 @@
#include <linux/of_gpio.h>
#include <linux/of_graph.h>
#include <linux/of_platform.h>
#include <linux/of_reserved_mem.h>
#include <linux/pm_runtime.h>
#include <linux/pinctrl/consumer.h>
#include <linux/regmap.h>
@@ -914,6 +915,24 @@ err:
return ret;
}
static inline bool is_iommu_enable(struct device *dev)
{
struct device_node *iommu;
iommu = of_parse_phandle(dev->of_node, "iommus", 0);
if (!iommu) {
dev_info(dev, "no iommu attached, using non-iommu buffers\n");
return false;
} else if (!of_device_is_available(iommu)) {
dev_info(dev, "iommu is disabled, using non-iommu buffers\n");
of_node_put(iommu);
return false;
}
of_node_put(iommu);
return true;
}
static int rkisp1_vs_irq_parse(struct platform_device *pdev)
{
int ret;
@@ -1105,6 +1124,13 @@ static int rkisp1_plat_probe(struct platform_device *pdev)
if (ret < 0)
goto err_unreg_media_dev;
if (!is_iommu_enable(dev)) {
ret = of_reserved_mem_device_init(dev);
if (ret)
v4l2_warn(v4l2_dev,
"No reserved memory region assign to isp\n");
}
pm_runtime_enable(&pdev->dev);
ret = rkisp1_vs_irq_parse(pdev);