diff options
Diffstat (limited to 'drivers/bus/fsl-mc/fsl-mc-private.h')
| -rw-r--r-- | drivers/bus/fsl-mc/fsl-mc-private.h | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/drivers/bus/fsl-mc/fsl-mc-private.h b/drivers/bus/fsl-mc/fsl-mc-private.h index c932387641fa..c9f7e7aca767 100644 --- a/drivers/bus/fsl-mc/fsl-mc-private.h +++ b/drivers/bus/fsl-mc/fsl-mc-private.h @@ -542,6 +542,24 @@ struct fsl_mc_resource_pool { struct fsl_mc_bus *mc_bus; }; +#include <linux/miscdevice.h> + +/** + * struct fsl_mc_uapi - information associated with a device file + * @misc: struct miscdevice linked to the root dprc + * @device: newly created device in /dev + * @mutex: mutex lock to serialize the open/release operations + * @local_instance_in_use: local MC I/O instance in use or not + * @static_mc_io: pointer to the static MC I/O object + */ +struct fsl_mc_uapi { + struct miscdevice misc; + struct device *device; + struct mutex mutex; /* serialize open/release operations */ + u32 local_instance_in_use; + struct fsl_mc_io *static_mc_io; +}; + /** * struct fsl_mc_bus - logical bus that corresponds to a physical DPRC * @mc_dev: fsl-mc device for the bus device itself. @@ -558,6 +576,7 @@ struct fsl_mc_bus { struct fsl_mc_device_irq *irq_resources; struct mutex scan_mutex; /* serializes bus scanning */ struct dprc_attributes dprc_attr; + struct fsl_mc_uapi uapi_misc; }; #define to_fsl_mc_bus(_mc_dev) \ @@ -612,4 +631,17 @@ void fsl_mc_get_root_dprc(struct device *dev, struct fsl_mc_device *fsl_mc_device_lookup(struct fsl_mc_obj_desc *obj_desc, struct fsl_mc_device *mc_bus_dev); +#ifdef CONFIG_FSL_MC_UAPI_SUPPORT +int fsl_mc_uapi_create_device_file(struct fsl_mc_bus *mc_bus); +void fsl_mc_uapi_remove_device_file(struct fsl_mc_bus *mc_bus); +#else +static inline int fsl_mc_uapi_create_device_file(struct fsl_mc_bus *mc_bus) +{ + return 0; +} + +static inline void fsl_mc_uapi_remove_device_file(struct fsl_mc_bus *mc_bus) +{ +} +#endif #endif /* _FSL_MC_PRIVATE_H_ */ |