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media: rk-isp10: add check of iommu status

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Change-Id: I31057963bff7d51ef0c208b5cc24797f4384e59f
Signed-off-by: Hu Kejun <william.hu@rock-chips.com>
This commit is contained in:
Hu Kejun
2018-06-27 17:08:02 +08:00
committed by Tao Huang
parent 69b01aa897
commit 018f73607d
1 changed files with 14 additions and 0 deletions
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14
drivers/media/platform/rk-isp10/cif_isp10_pltfrm.c
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@@ -817,6 +817,7 @@ int cif_isp10_pltfrm_dev_init(
struct device_node *np;
struct device_node *of_node = pdev->dev.of_node;
const char *compatible;
const char *iommu_status;
int err = 0;
#endif
@@ -905,6 +906,19 @@ int cif_isp10_pltfrm_dev_init(
pdata->irq_handlers[i].mis = -EINVAL;
#ifdef CIF_ISP10_MODE_DMA_SG
np = of_parse_phandle(of_node, "iommus", 0);
WARN_ON(!np);
if (np) {
of_property_read_string(np, "status", &iommu_status);
if (strcmp(iommu_status, "okay") != 0) {
dev_warn(dev, "Please check isp_mmu node is okay! CIF_ISP10_MODE_DMA_SG is turn on in cif isp10 driver.\n");
WARN_ON(1);
of_node_put(np);
goto err;
}
of_node_put(np);
}
of_property_read_string(of_node, "compatible", &compatible);
if ((strcmp(compatible, "rockchip,rk3399-cif-isp") == 0) &&
(res->start == 0xFF920000)) {