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authorOmar Ramirez Luna <omar.luna@linaro.org>2012-11-20 05:05:51 +0400
committerJoerg Roedel <joro@8bytes.org>2012-12-03 21:48:23 +0400
commitebf7cda0f92effd8169b831fae81e9437dce1fef (patch)
tree4c506bb094eee7c2128c7c9b17a6b0480a99a0dd /drivers/iommu/omap-iommu.h
parent72b15b6ae97796c5fac687addde5dbfab872cf94 (diff)
downloadlinux-ebf7cda0f92effd8169b831fae81e9437dce1fef.tar.xz
iommu/omap: Adapt to runtime pm
Use runtime PM functionality interfaced with hwmod enable/idle functions, to replace direct clock operations and sysconfig handling. Due to reset sequence, pm_runtime_[get|put]_sync must be used, to avoid possible operations with the module under reset. Because of this and given that the driver uses spin_locks to protect their critical sections, we must use pm_runtime_irq_safe in order for the runtime ops to be happy, otherwise might_sleep_if checks in runtime framework will complain. The remaining pm_runtime out of iommu_enable and iommu_disable corresponds to paths that can be accessed through debugfs, some of them doesn't work if the module is not enabled first, but in future if the mmu is idled withouth freeing, these are needed to debug. Signed-off-by: Omar Ramirez Luna <omar.luna@linaro.org> Tested-by: Ohad Ben-Cohen <ohad@wizery.com> Acked-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Joerg Roedel <joro@8bytes.org>
Diffstat (limited to 'drivers/iommu/omap-iommu.h')
-rw-r--r--drivers/iommu/omap-iommu.h3
1 files changed, 0 insertions, 3 deletions
diff --git a/drivers/iommu/omap-iommu.h b/drivers/iommu/omap-iommu.h
index 2b5f3c04d167..120084206602 100644
--- a/drivers/iommu/omap-iommu.h
+++ b/drivers/iommu/omap-iommu.h
@@ -29,7 +29,6 @@ struct iotlb_entry {
struct omap_iommu {
const char *name;
struct module *owner;
- struct clk *clk;
void __iomem *regbase;
struct device *dev;
void *isr_priv;
@@ -116,8 +115,6 @@ static inline struct omap_iommu *dev_to_omap_iommu(struct device *dev)
* MMU Register offsets
*/
#define MMU_REVISION 0x00
-#define MMU_SYSCONFIG 0x10
-#define MMU_SYSSTATUS 0x14
#define MMU_IRQSTATUS 0x18
#define MMU_IRQENABLE 0x1c
#define MMU_WALKING_ST 0x40