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Commit 49a57ef7 authored by Suman Anna's avatar Suman Anna Committed by Joerg Roedel
Browse files

iommu/omap: Drop legacy-style device support 



All the supported boards that have OMAP IOMMU devices do support
DT boot only now. So, drop the support for the non-DT legacy-style
devices from the OMAP IOMMU driver. Couple of the fields from the
iommu platform data would no longer be required, so they have also
been cleaned up. The IOMMU platform data is still needed though for
performing reset management properly in a multi-arch environment.

Signed-off-by: default avatarSuman Anna <s-anna@ti.com>
Signed-off-by: default avatarJoerg Roedel <jroedel@suse.de>
parent abaa7e5b

drivers/iommu/omap-iommu.c

+14 −16
Original line number Diff line number Diff line
@@ -928,28 +928,26 @@ static int omap_iommu_probe(struct platform_device *pdev) 
	int irq;

	struct omap_iommu *obj;

	struct resource *res;

	struct iommu_platform_data *pdata = dev_get_platdata(&pdev->dev);

	struct device_node *of = pdev->dev.of_node;



	if (!of) {

		pr_err("%s: only DT-based devices are supported\n", __func__);

		return -ENODEV;

	}



	obj = devm_kzalloc(&pdev->dev, sizeof(*obj) + MMU_REG_SIZE, GFP_KERNEL);

	if (!obj)

		return -ENOMEM;



	if (of) {

	obj->name = dev_name(&pdev->dev);

	obj->nr_tlb_entries = 32;

		err = of_property_read_u32(of, "ti,#tlb-entries",

					   &obj->nr_tlb_entries);

	err = of_property_read_u32(of, "ti,#tlb-entries", &obj->nr_tlb_entries);

	if (err && err != -EINVAL)

		return err;

	if (obj->nr_tlb_entries != 32 && obj->nr_tlb_entries != 8)

		return -EINVAL;

	if (of_find_property(of, "ti,iommu-bus-err-back", NULL))

		obj->has_bus_err_back = MMU_GP_REG_BUS_ERR_BACK_EN;

	} else {

		obj->nr_tlb_entries = pdata->nr_tlb_entries;

		obj->name = pdata->name;

	}



	obj->dev = &pdev->dev;

	obj->ctx = (void *)obj + sizeof(*obj);

include/linux/platform_data/iommu-omap.h

+0 −3
Original line number Diff line number Diff line
@@ -30,10 +30,7 @@ struct omap_iommu_arch_data { 
};



struct iommu_platform_data {

	const char *name;

	const char *reset_name;

	int nr_tlb_entries;



	int (*assert_reset)(struct platform_device *pdev, const char *name);

	int (*deassert_reset)(struct platform_device *pdev, const char *name);

};