diff options
Diffstat (limited to 'arch/arm/plat-omap/iommu.c')
| -rw-r--r-- | arch/arm/plat-omap/iommu.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/arch/arm/plat-omap/iommu.c b/arch/arm/plat-omap/iommu.c index 341c481..688ae66 100644 --- a/arch/arm/plat-omap/iommu.c +++ b/arch/arm/plat-omap/iommu.c @@ -370,6 +370,23 @@ void flush_iotlb_all(struct iommu *obj) } EXPORT_SYMBOL_GPL(flush_iotlb_all); +/** + * iommu_set_twl - enable/disable table walking logic + * @obj: target iommu + * @on: enable/disable + * + * Function used to enable/disable TWL. If one wants to work + * exclusively with locked TLB entries and receive notifications + * for TLB miss then call this function to disable TWL. + */ +void iommu_set_twl(struct iommu *obj, bool on) +{ + clk_enable(obj->clk); + arch_iommu->set_twl(obj, on); + clk_disable(obj->clk); +} +EXPORT_SYMBOL_GPL(iommu_set_twl); + #if defined(CONFIG_OMAP_IOMMU_DEBUG_MODULE) ssize_t iommu_dump_ctx(struct iommu *obj, char *buf, ssize_t bytes) |
