diff options
Diffstat (limited to 'drivers/video/omap2/omapfb/omapfb.h')
| -rw-r--r-- | drivers/video/omap2/omapfb/omapfb.h | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/drivers/video/omap2/omapfb/omapfb.h b/drivers/video/omap2/omapfb/omapfb.h index 02f1ba9b228c..db3aef5172c5 100644 --- a/drivers/video/omap2/omapfb/omapfb.h +++ b/drivers/video/omap2/omapfb/omapfb.h @@ -52,6 +52,8 @@ struct omapfb2_mem_region { u8 type; /* OMAPFB_PLANE_MEM_* */ bool alloc; /* allocated by the driver */ bool map; /* kernel mapped by the driver */ + struct mutex mtx; + unsigned int ref; atomic_t map_count; }; @@ -159,4 +161,20 @@ static inline int omapfb_overlay_enable(struct omap_overlay *ovl, return ovl->set_overlay_info(ovl, &info); } +static inline struct omapfb2_mem_region * +omapfb_get_mem_region(struct omapfb2_mem_region *rg) +{ + mutex_lock(&rg->mtx); + rg->ref++; + mutex_unlock(&rg->mtx); + return rg; +} + +static inline void omapfb_put_mem_region(struct omapfb2_mem_region *rg) +{ + mutex_lock(&rg->mtx); + rg->ref--; + mutex_unlock(&rg->mtx); +} + #endif |