diff options
| -rw-r--r-- | arch/arm/mach-omap2/iommu2.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/arch/arm/mach-omap2/iommu2.c b/arch/arm/mach-omap2/iommu2.c index 96e89ef3c1e..d5020c887b6 100644 --- a/arch/arm/mach-omap2/iommu2.c +++ b/arch/arm/mach-omap2/iommu2.c @@ -20,6 +20,9 @@ #include <plat/iommu.h> #include <plat/omap_device.h> +#ifdef CONFIG_OMAP_PM +#include <plat/omap-pm.h> +#endif /* * omap2 architecture specific register bit definitions @@ -66,6 +69,12 @@ ((pgsz) == MMU_CAM_PGSZ_64K) ? 0xffff0000 : \ ((pgsz) == MMU_CAM_PGSZ_4K) ? 0xfffff000 : 0) +#ifdef CONFIG_OMAP_PM +struct pm_qos_request_list *pm_iommu1_handle; +#define PM_IOMMU1_SDMA_LAT_CONSTRAINT 400 +#define PM_IOMMU1_NO_LAT_CONSTRAINT -1 +#endif + static void __iommu_set_twl(struct iommu *obj, bool on) { @@ -103,6 +112,16 @@ static int omap2_iommu_enable(struct iommu *obj) if (!IS_ALIGNED(pa, SZ_16K)) return -EINVAL; +#ifdef CONFIG_OMAP_PM + if (!strcmp(obj->name, "ducati")) { + ret = omap_pm_set_max_sdma_lat(&pm_iommu1_handle, + PM_IOMMU1_SDMA_LAT_CONSTRAINT); + if (ret) { + pr_err("omap2_iommu_enable - Unable to set constraint " + "on CORE domain\n"); + } + } +#endif ret = omap_device_enable(obj->pdev); if (ret) return ret; @@ -153,6 +172,17 @@ static void omap2_iommu_disable(struct iommu *obj) dev_dbg(obj->dev, "%s is shutting down\n", obj->name); if (omap_device_shutdown(obj->pdev)) dev_err(obj->dev, "%s err 0x%x\n", __func__, ret); + +#ifdef CONFIG_OMAP_PM + if (!strcmp(obj->name, "ducati")) { + int status1 = omap_pm_set_max_sdma_lat(&pm_iommu1_handle, + PM_IOMMU1_NO_LAT_CONSTRAINT); + if (status1) { + pr_err("omap2_iommu_disable failed to release " + "constraint on CORE domain\n"); + } + } +#endif } static void omap2_iommu_set_twl(struct iommu *obj, bool on) |