diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/host1x.h | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/include/linux/host1x.h b/include/linux/host1x.h index c0bf4e581fe9..32a82da13fed 100644 --- a/include/linux/host1x.h +++ b/include/linux/host1x.h @@ -446,4 +446,38 @@ int tegra_mipi_disable(struct tegra_mipi_device *device); int tegra_mipi_start_calibration(struct tegra_mipi_device *device); int tegra_mipi_finish_calibration(struct tegra_mipi_device *device); +/* host1x memory contexts */ + +struct host1x_memory_context { + struct host1x *host; + + refcount_t ref; + struct pid *owner; + + struct device dev; + u64 dma_mask; + u32 stream_id; +}; + +#ifdef CONFIG_IOMMU_API +struct host1x_memory_context *host1x_memory_context_alloc(struct host1x *host1x, + struct pid *pid); +void host1x_memory_context_get(struct host1x_memory_context *cd); +void host1x_memory_context_put(struct host1x_memory_context *cd); +#else +static inline struct host1x_memory_context *host1x_memory_context_alloc(struct host1x *host1x, + struct pid *pid) +{ + return NULL; +} + +static inline void host1x_memory_context_get(struct host1x_memory_context *cd) +{ +} + +static inline void host1x_memory_context_put(struct host1x_memory_context *cd) +{ +} +#endif + #endif |