1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* 3 * omap iommu: simple virtual address space management 4 * 5 * Copyright (C) 2008-2009 Nokia Corporation 6 * 7 * Written by Hiroshi DOYU <Hiroshi.DOYU@nokia.com> 8 */ 9 10 #ifndef _OMAP_IOMMU_H_ 11 #define _OMAP_IOMMU_H_ 12 13 struct iommu_domain; 14 15 #ifdef CONFIG_OMAP_IOMMU 16 extern void omap_iommu_save_ctx(struct device *dev); 17 extern void omap_iommu_restore_ctx(struct device *dev); 18 19 int omap_iommu_domain_deactivate(struct iommu_domain *domain); 20 int omap_iommu_domain_activate(struct iommu_domain *domain); 21 #else 22 static inline void omap_iommu_save_ctx(struct device *dev) {} 23 static inline void omap_iommu_restore_ctx(struct device *dev) {} 24 25 static inline int omap_iommu_domain_deactivate(struct iommu_domain *domain) 26 { 27 return -ENODEV; 28 } 29 30 static inline int omap_iommu_domain_activate(struct iommu_domain *domain) 31 { 32 return -ENODEV; 33 } 34 #endif 35 36 #endif 37