| Message ID | 20201222105726.16906-3-arnaud.pouliquen@foss.st.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | introduce generic IOCTL interface for RPMsg channels management | expand |
On Tue 22 Dec 04:57 CST 2020, Arnaud Pouliquen wrote: > Add API to register a RPMsg service to the control device. > The rpmsg_drv_ctrl_info structure links a service to its driver. > > Signed-off-by: Arnaud Pouliquen <arnaud.pouliquen@foss.st.com> > --- > drivers/rpmsg/rpmsg_ctrl.c | 57 ++++++++++++++++++++++++++++++++++++++ > include/linux/rpmsg.h | 31 +++++++++++++++++++++ > include/uapi/linux/rpmsg.h | 14 ++++++++++ > 3 files changed, 102 insertions(+) > > diff --git a/drivers/rpmsg/rpmsg_ctrl.c b/drivers/rpmsg/rpmsg_ctrl.c > index 425c3e32ada4..065e2e304019 100644 > --- a/drivers/rpmsg/rpmsg_ctrl.c > +++ b/drivers/rpmsg/rpmsg_ctrl.c > @@ -27,6 +27,20 @@ struct rpmsg_ctrl_dev { > struct device dev; > }; > > +/** > + * struct rpmsg_ctl_info - control info list node > + * @ctrl: control driver info > + * @node: list node > + * > + * This structure is used by rpmsg_ctl to list the registered drivers services > + */ > +struct rpmsg_ctl_info { > + const struct rpmsg_drv_ctrl_info *ctrl; > + struct list_head node; > +}; > + > +static LIST_HEAD(rpmsg_drv_list); > + > static DEFINE_IDA(rpmsg_ctrl_ida); > static DEFINE_IDA(rpmsg_minor_ida); > > @@ -175,6 +189,49 @@ static struct rpmsg_driver rpmsg_ctrl_driver = { > .remove = rpmsg_ctrl_remove, > }; > > +/** > + * rpmsg_ctrl_register_ctl() -register control for the associated service > + * @ctrl: rpmsg driver information > + * > + * This function is called by the rpmsg driver to register a service that will > + * be exposed to be instantiate by the application. > + */ > +int rpmsg_ctrl_register_ctl(const struct rpmsg_drv_ctrl_info *ctrl) > +{ > + struct rpmsg_ctl_info *drv_info; > + > + drv_info = kzalloc(sizeof(*drv_info), GFP_KERNEL); > + if (!drv_info) > + return -ENOMEM; > + > + drv_info->ctrl = ctrl; > + > + list_add_tail(&drv_info->node, &rpmsg_drv_list); > + > + return 0; > +} > +EXPORT_SYMBOL(rpmsg_ctrl_register_ctl); > + > +/** > + * rpmsg_ctrl_unregister_ctl() -unregister control for the associated service > + * @ctrl: the rpmsg control information > + * > + * This function is called by the rpmsg driver to unregister the associated > + * service. > + */ > +void rpmsg_ctrl_unregister_ctl(const struct rpmsg_drv_ctrl_info *ctrl) > +{ > + struct rpmsg_ctl_info *drv_info, *tmp; > + > + list_for_each_entry_safe(drv_info, tmp, &rpmsg_drv_list, node) { > + if (drv_info->ctrl == ctrl) { > + list_del(&drv_info->node); > + kfree(drv_info); > + } > + } > +} > +EXPORT_SYMBOL(rpmsg_ctrl_unregister_ctl); > + > static int rpmsg_ctrl_init(void) > { > int ret; > diff --git a/include/linux/rpmsg.h b/include/linux/rpmsg.h > index a5db828b2420..5d64704c2346 100644 > --- a/include/linux/rpmsg.h > +++ b/include/linux/rpmsg.h > @@ -26,6 +26,19 @@ struct rpmsg_endpoint; > struct rpmsg_device_ops; > struct rpmsg_endpoint_ops; > > +/** > + * struct rpmsg_drv_ctrl_info - rpmsg ctrl structure > + * @drv_name: name of the associated driver > + * @service: the associated rpmsg service listed in @rpmsg_services > + * > + * This structure is used by rpmsg_ctl to link the endpoint creation to the > + * service rpmsg driver. > + */ > +struct rpmsg_drv_ctrl_info { > + const char *drv_name; > + u32 service; > +}; > + > /** > * struct rpmsg_channel_info - channel info representation > * @name: name of service > @@ -315,4 +328,22 @@ static inline __poll_t rpmsg_poll(struct rpmsg_endpoint *ept, > module_driver(__rpmsg_driver, register_rpmsg_driver, \ > unregister_rpmsg_driver) > > +#if IS_ENABLED(CONFIG_RPMSG_CTRL) > + > +int rpmsg_ctrl_register_ctl(const struct rpmsg_drv_ctrl_info *ctrl); > +void rpmsg_ctrl_unregister_ctl(const struct rpmsg_drv_ctrl_info *ctrl); > + > +#else > + > +static inline int rpmsg_ctrl_register_ctl(const struct rpmsg_drv_ctrl_info *ctrl) > +{ > + return 0; > +} > + > +static inline void rpmsg_ctrl_unregister_ctl(const struct rpmsg_drv_ctrl_info *ctrl) > +{ > +} > + > +#endif /* IS_ENABLED(CONFIG_RPMSG_CTRL) */ > + > #endif /* _LINUX_RPMSG_H */ > diff --git a/include/uapi/linux/rpmsg.h b/include/uapi/linux/rpmsg.h > index e14c6dab4223..0b0cb028e0b3 100644 > --- a/include/uapi/linux/rpmsg.h > +++ b/include/uapi/linux/rpmsg.h > @@ -9,6 +9,20 @@ > #include <linux/ioctl.h> > #include <linux/types.h> > > +/** > + * enum rpmsg_services - list of supported RPMsg services > + * > + * @RPMSG_RAW_SERVICE: char device RPMSG service > + * @RPMSG_START_PRIVATE_SERVICES: private services have to be declared after. > + */ > +enum rpmsg_services { > + /* Reserved services */ > + RPMSG_RAW_SERVICE = 0, > + What kind of things do you envision this list to contain in a year from now? Regards, Bjorn > + /* Private services */ > + RPMSG_START_PRIVATE_SERVICES = 1024, > +}; > + > /** > * struct rpmsg_endpoint_info - endpoint info representation > * @name: name of service > -- > 2.17.1 >
On 1/5/21 1:34 AM, Bjorn Andersson wrote: > On Tue 22 Dec 04:57 CST 2020, Arnaud Pouliquen wrote: > >> Add API to register a RPMsg service to the control device. >> The rpmsg_drv_ctrl_info structure links a service to its driver. >> >> Signed-off-by: Arnaud Pouliquen <arnaud.pouliquen@foss.st.com> >> --- >> drivers/rpmsg/rpmsg_ctrl.c | 57 ++++++++++++++++++++++++++++++++++++++ >> include/linux/rpmsg.h | 31 +++++++++++++++++++++ >> include/uapi/linux/rpmsg.h | 14 ++++++++++ >> 3 files changed, 102 insertions(+) >> >> diff --git a/drivers/rpmsg/rpmsg_ctrl.c b/drivers/rpmsg/rpmsg_ctrl.c >> index 425c3e32ada4..065e2e304019 100644 >> --- a/drivers/rpmsg/rpmsg_ctrl.c >> +++ b/drivers/rpmsg/rpmsg_ctrl.c >> @@ -27,6 +27,20 @@ struct rpmsg_ctrl_dev { >> struct device dev; >> }; >> >> +/** >> + * struct rpmsg_ctl_info - control info list node >> + * @ctrl: control driver info >> + * @node: list node >> + * >> + * This structure is used by rpmsg_ctl to list the registered drivers services >> + */ >> +struct rpmsg_ctl_info { >> + const struct rpmsg_drv_ctrl_info *ctrl; >> + struct list_head node; >> +}; >> + >> +static LIST_HEAD(rpmsg_drv_list); >> + >> static DEFINE_IDA(rpmsg_ctrl_ida); >> static DEFINE_IDA(rpmsg_minor_ida); >> >> @@ -175,6 +189,49 @@ static struct rpmsg_driver rpmsg_ctrl_driver = { >> .remove = rpmsg_ctrl_remove, >> }; >> >> +/** >> + * rpmsg_ctrl_register_ctl() -register control for the associated service >> + * @ctrl: rpmsg driver information >> + * >> + * This function is called by the rpmsg driver to register a service that will >> + * be exposed to be instantiate by the application. >> + */ >> +int rpmsg_ctrl_register_ctl(const struct rpmsg_drv_ctrl_info *ctrl) >> +{ >> + struct rpmsg_ctl_info *drv_info; >> + >> + drv_info = kzalloc(sizeof(*drv_info), GFP_KERNEL); >> + if (!drv_info) >> + return -ENOMEM; >> + >> + drv_info->ctrl = ctrl; >> + >> + list_add_tail(&drv_info->node, &rpmsg_drv_list); >> + >> + return 0; >> +} >> +EXPORT_SYMBOL(rpmsg_ctrl_register_ctl); >> + >> +/** >> + * rpmsg_ctrl_unregister_ctl() -unregister control for the associated service >> + * @ctrl: the rpmsg control information >> + * >> + * This function is called by the rpmsg driver to unregister the associated >> + * service. >> + */ >> +void rpmsg_ctrl_unregister_ctl(const struct rpmsg_drv_ctrl_info *ctrl) >> +{ >> + struct rpmsg_ctl_info *drv_info, *tmp; >> + >> + list_for_each_entry_safe(drv_info, tmp, &rpmsg_drv_list, node) { >> + if (drv_info->ctrl == ctrl) { >> + list_del(&drv_info->node); >> + kfree(drv_info); >> + } >> + } >> +} >> +EXPORT_SYMBOL(rpmsg_ctrl_unregister_ctl); >> + >> static int rpmsg_ctrl_init(void) >> { >> int ret; >> diff --git a/include/linux/rpmsg.h b/include/linux/rpmsg.h >> index a5db828b2420..5d64704c2346 100644 >> --- a/include/linux/rpmsg.h >> +++ b/include/linux/rpmsg.h >> @@ -26,6 +26,19 @@ struct rpmsg_endpoint; >> struct rpmsg_device_ops; >> struct rpmsg_endpoint_ops; >> >> +/** >> + * struct rpmsg_drv_ctrl_info - rpmsg ctrl structure >> + * @drv_name: name of the associated driver >> + * @service: the associated rpmsg service listed in @rpmsg_services >> + * >> + * This structure is used by rpmsg_ctl to link the endpoint creation to the >> + * service rpmsg driver. >> + */ >> +struct rpmsg_drv_ctrl_info { >> + const char *drv_name; >> + u32 service; >> +}; >> + >> /** >> * struct rpmsg_channel_info - channel info representation >> * @name: name of service >> @@ -315,4 +328,22 @@ static inline __poll_t rpmsg_poll(struct rpmsg_endpoint *ept, >> module_driver(__rpmsg_driver, register_rpmsg_driver, \ >> unregister_rpmsg_driver) >> >> +#if IS_ENABLED(CONFIG_RPMSG_CTRL) >> + >> +int rpmsg_ctrl_register_ctl(const struct rpmsg_drv_ctrl_info *ctrl); >> +void rpmsg_ctrl_unregister_ctl(const struct rpmsg_drv_ctrl_info *ctrl); >> + >> +#else >> + >> +static inline int rpmsg_ctrl_register_ctl(const struct rpmsg_drv_ctrl_info *ctrl) >> +{ >> + return 0; >> +} >> + >> +static inline void rpmsg_ctrl_unregister_ctl(const struct rpmsg_drv_ctrl_info *ctrl) >> +{ >> +} >> + >> +#endif /* IS_ENABLED(CONFIG_RPMSG_CTRL) */ >> + >> #endif /* _LINUX_RPMSG_H */ >> diff --git a/include/uapi/linux/rpmsg.h b/include/uapi/linux/rpmsg.h >> index e14c6dab4223..0b0cb028e0b3 100644 >> --- a/include/uapi/linux/rpmsg.h >> +++ b/include/uapi/linux/rpmsg.h >> @@ -9,6 +9,20 @@ >> #include <linux/ioctl.h> >> #include <linux/types.h> >> >> +/** >> + * enum rpmsg_services - list of supported RPMsg services >> + * >> + * @RPMSG_RAW_SERVICE: char device RPMSG service >> + * @RPMSG_START_PRIVATE_SERVICES: private services have to be declared after. >> + */ >> +enum rpmsg_services { >> + /* Reserved services */ >> + RPMSG_RAW_SERVICE = 0, >> + > > What kind of things do you envision this list to contain in a year from > now? The next one is the TTY, and perhaps the RPMsg I2C that allows to share a I2C bus between the main and a remote processor. Please notice that this field will also has to be added in a second step to the rpmsg_endpoint_info struct, to allow the applications to select the expected service. Regards Arnaud > > Regards, > Bjorn > >> + /* Private services */ >> + RPMSG_START_PRIVATE_SERVICES = 1024, >> +}; >> + >> /** >> * struct rpmsg_endpoint_info - endpoint info representation >> * @name: name of service >> -- >> 2.17.1 >>
On Tue, Dec 22, 2020 at 11:57:12AM +0100, Arnaud Pouliquen wrote: > Add API to register a RPMsg service to the control device. > The rpmsg_drv_ctrl_info structure links a service to its driver. > > Signed-off-by: Arnaud Pouliquen <arnaud.pouliquen@foss.st.com> > --- > drivers/rpmsg/rpmsg_ctrl.c | 57 ++++++++++++++++++++++++++++++++++++++ > include/linux/rpmsg.h | 31 +++++++++++++++++++++ > include/uapi/linux/rpmsg.h | 14 ++++++++++ > 3 files changed, 102 insertions(+) > > diff --git a/drivers/rpmsg/rpmsg_ctrl.c b/drivers/rpmsg/rpmsg_ctrl.c > index 425c3e32ada4..065e2e304019 100644 > --- a/drivers/rpmsg/rpmsg_ctrl.c > +++ b/drivers/rpmsg/rpmsg_ctrl.c > @@ -27,6 +27,20 @@ struct rpmsg_ctrl_dev { > struct device dev; > }; > > +/** > + * struct rpmsg_ctl_info - control info list node > + * @ctrl: control driver info > + * @node: list node > + * > + * This structure is used by rpmsg_ctl to list the registered drivers services > + */ > +struct rpmsg_ctl_info { struct rpmsg_ctrl_info > + const struct rpmsg_drv_ctrl_info *ctrl; > + struct list_head node; > +}; > + > +static LIST_HEAD(rpmsg_drv_list); > + > static DEFINE_IDA(rpmsg_ctrl_ida); > static DEFINE_IDA(rpmsg_minor_ida); > > @@ -175,6 +189,49 @@ static struct rpmsg_driver rpmsg_ctrl_driver = { > .remove = rpmsg_ctrl_remove, > }; > > +/** > + * rpmsg_ctrl_register_ctl() -register control for the associated service > + * @ctrl: rpmsg driver information > + * > + * This function is called by the rpmsg driver to register a service that will > + * be exposed to be instantiate by the application. > + */ > +int rpmsg_ctrl_register_ctl(const struct rpmsg_drv_ctrl_info *ctrl) Here an rpmsg_drv is registered with the infrastructure and as such I propose rpmsg_ctrl_register_driver_ctrl(). > +{ > + struct rpmsg_ctl_info *drv_info; > + > + drv_info = kzalloc(sizeof(*drv_info), GFP_KERNEL); > + if (!drv_info) > + return -ENOMEM; When this driver is remove all drv_info left in rpmsg_drv_list should be free'd. We can't count on users to call rpmsg_ctrl_unregister_ctl(). > + > + drv_info->ctrl = ctrl; This has the potential of creating problems - we don't know then the memory assocaited with @ctrl will disappear on us. > + > + list_add_tail(&drv_info->node, &rpmsg_drv_list); > + > + return 0; > +} > +EXPORT_SYMBOL(rpmsg_ctrl_register_ctl); > + > +/** > + * rpmsg_ctrl_unregister_ctl() -unregister control for the associated service > + * @ctrl: the rpmsg control information > + * > + * This function is called by the rpmsg driver to unregister the associated > + * service. > + */ > +void rpmsg_ctrl_unregister_ctl(const struct rpmsg_drv_ctrl_info *ctrl) > +{ > + struct rpmsg_ctl_info *drv_info, *tmp; > + > + list_for_each_entry_safe(drv_info, tmp, &rpmsg_drv_list, node) { > + if (drv_info->ctrl == ctrl) { > + list_del(&drv_info->node); > + kfree(drv_info); > + } > + } > +} > +EXPORT_SYMBOL(rpmsg_ctrl_unregister_ctl); > + > static int rpmsg_ctrl_init(void) > { > int ret; > diff --git a/include/linux/rpmsg.h b/include/linux/rpmsg.h > index a5db828b2420..5d64704c2346 100644 > --- a/include/linux/rpmsg.h > +++ b/include/linux/rpmsg.h > @@ -26,6 +26,19 @@ struct rpmsg_endpoint; > struct rpmsg_device_ops; > struct rpmsg_endpoint_ops; > > +/** > + * struct rpmsg_drv_ctrl_info - rpmsg ctrl structure > + * @drv_name: name of the associated driver > + * @service: the associated rpmsg service listed in @rpmsg_services > + * > + * This structure is used by rpmsg_ctl to link the endpoint creation to the > + * service rpmsg driver. > + */ > +struct rpmsg_drv_ctrl_info { > + const char *drv_name; > + u32 service; > +}; > + > /** > * struct rpmsg_channel_info - channel info representation > * @name: name of service > @@ -315,4 +328,22 @@ static inline __poll_t rpmsg_poll(struct rpmsg_endpoint *ept, > module_driver(__rpmsg_driver, register_rpmsg_driver, \ > unregister_rpmsg_driver) > > +#if IS_ENABLED(CONFIG_RPMSG_CTRL) > + > +int rpmsg_ctrl_register_ctl(const struct rpmsg_drv_ctrl_info *ctrl); > +void rpmsg_ctrl_unregister_ctl(const struct rpmsg_drv_ctrl_info *ctrl); > + > +#else > + > +static inline int rpmsg_ctrl_register_ctl(const struct rpmsg_drv_ctrl_info *ctrl) > +{ > + return 0; > +} > + > +static inline void rpmsg_ctrl_unregister_ctl(const struct rpmsg_drv_ctrl_info *ctrl) > +{ > +} > + > +#endif /* IS_ENABLED(CONFIG_RPMSG_CTRL) */ Shouldn't this be in its own header, something like rpmsg_ctrl.h? > + > #endif /* _LINUX_RPMSG_H */ > diff --git a/include/uapi/linux/rpmsg.h b/include/uapi/linux/rpmsg.h > index e14c6dab4223..0b0cb028e0b3 100644 > --- a/include/uapi/linux/rpmsg.h > +++ b/include/uapi/linux/rpmsg.h > @@ -9,6 +9,20 @@ > #include <linux/ioctl.h> > #include <linux/types.h> > > +/** > + * enum rpmsg_services - list of supported RPMsg services > + * > + * @RPMSG_RAW_SERVICE: char device RPMSG service > + * @RPMSG_START_PRIVATE_SERVICES: private services have to be declared after. > + */ > +enum rpmsg_services { > + /* Reserved services */ > + RPMSG_RAW_SERVICE = 0, > + > + /* Private services */ > + RPMSG_START_PRIVATE_SERVICES = 1024, We have plenty of bits in an enum type - I would set this to 4096 just to be on the safe side. > +}; > + > /** > * struct rpmsg_endpoint_info - endpoint info representation > * @name: name of service > -- > 2.17.1 >
diff --git a/drivers/rpmsg/rpmsg_ctrl.c b/drivers/rpmsg/rpmsg_ctrl.c index 425c3e32ada4..065e2e304019 100644 --- a/drivers/rpmsg/rpmsg_ctrl.c +++ b/drivers/rpmsg/rpmsg_ctrl.c @@ -27,6 +27,20 @@ struct rpmsg_ctrl_dev { struct device dev; }; +/** + * struct rpmsg_ctl_info - control info list node + * @ctrl: control driver info + * @node: list node + * + * This structure is used by rpmsg_ctl to list the registered drivers services + */ +struct rpmsg_ctl_info { + const struct rpmsg_drv_ctrl_info *ctrl; + struct list_head node; +}; + +static LIST_HEAD(rpmsg_drv_list); + static DEFINE_IDA(rpmsg_ctrl_ida); static DEFINE_IDA(rpmsg_minor_ida); @@ -175,6 +189,49 @@ static struct rpmsg_driver rpmsg_ctrl_driver = { .remove = rpmsg_ctrl_remove, }; +/** + * rpmsg_ctrl_register_ctl() -register control for the associated service + * @ctrl: rpmsg driver information + * + * This function is called by the rpmsg driver to register a service that will + * be exposed to be instantiate by the application. + */ +int rpmsg_ctrl_register_ctl(const struct rpmsg_drv_ctrl_info *ctrl) +{ + struct rpmsg_ctl_info *drv_info; + + drv_info = kzalloc(sizeof(*drv_info), GFP_KERNEL); + if (!drv_info) + return -ENOMEM; + + drv_info->ctrl = ctrl; + + list_add_tail(&drv_info->node, &rpmsg_drv_list); + + return 0; +} +EXPORT_SYMBOL(rpmsg_ctrl_register_ctl); + +/** + * rpmsg_ctrl_unregister_ctl() -unregister control for the associated service + * @ctrl: the rpmsg control information + * + * This function is called by the rpmsg driver to unregister the associated + * service. + */ +void rpmsg_ctrl_unregister_ctl(const struct rpmsg_drv_ctrl_info *ctrl) +{ + struct rpmsg_ctl_info *drv_info, *tmp; + + list_for_each_entry_safe(drv_info, tmp, &rpmsg_drv_list, node) { + if (drv_info->ctrl == ctrl) { + list_del(&drv_info->node); + kfree(drv_info); + } + } +} +EXPORT_SYMBOL(rpmsg_ctrl_unregister_ctl); + static int rpmsg_ctrl_init(void) { int ret; diff --git a/include/linux/rpmsg.h b/include/linux/rpmsg.h index a5db828b2420..5d64704c2346 100644 --- a/include/linux/rpmsg.h +++ b/include/linux/rpmsg.h @@ -26,6 +26,19 @@ struct rpmsg_endpoint; struct rpmsg_device_ops; struct rpmsg_endpoint_ops; +/** + * struct rpmsg_drv_ctrl_info - rpmsg ctrl structure + * @drv_name: name of the associated driver + * @service: the associated rpmsg service listed in @rpmsg_services + * + * This structure is used by rpmsg_ctl to link the endpoint creation to the + * service rpmsg driver. + */ +struct rpmsg_drv_ctrl_info { + const char *drv_name; + u32 service; +}; + /** * struct rpmsg_channel_info - channel info representation * @name: name of service @@ -315,4 +328,22 @@ static inline __poll_t rpmsg_poll(struct rpmsg_endpoint *ept, module_driver(__rpmsg_driver, register_rpmsg_driver, \ unregister_rpmsg_driver) +#if IS_ENABLED(CONFIG_RPMSG_CTRL) + +int rpmsg_ctrl_register_ctl(const struct rpmsg_drv_ctrl_info *ctrl); +void rpmsg_ctrl_unregister_ctl(const struct rpmsg_drv_ctrl_info *ctrl); + +#else + +static inline int rpmsg_ctrl_register_ctl(const struct rpmsg_drv_ctrl_info *ctrl) +{ + return 0; +} + +static inline void rpmsg_ctrl_unregister_ctl(const struct rpmsg_drv_ctrl_info *ctrl) +{ +} + +#endif /* IS_ENABLED(CONFIG_RPMSG_CTRL) */ + #endif /* _LINUX_RPMSG_H */ diff --git a/include/uapi/linux/rpmsg.h b/include/uapi/linux/rpmsg.h index e14c6dab4223..0b0cb028e0b3 100644 --- a/include/uapi/linux/rpmsg.h +++ b/include/uapi/linux/rpmsg.h @@ -9,6 +9,20 @@ #include <linux/ioctl.h> #include <linux/types.h> +/** + * enum rpmsg_services - list of supported RPMsg services + * + * @RPMSG_RAW_SERVICE: char device RPMSG service + * @RPMSG_START_PRIVATE_SERVICES: private services have to be declared after. + */ +enum rpmsg_services { + /* Reserved services */ + RPMSG_RAW_SERVICE = 0, + + /* Private services */ + RPMSG_START_PRIVATE_SERVICES = 1024, +}; + /** * struct rpmsg_endpoint_info - endpoint info representation * @name: name of service
Add API to register a RPMsg service to the control device. The rpmsg_drv_ctrl_info structure links a service to its driver. Signed-off-by: Arnaud Pouliquen <arnaud.pouliquen@foss.st.com> --- drivers/rpmsg/rpmsg_ctrl.c | 57 ++++++++++++++++++++++++++++++++++++++ include/linux/rpmsg.h | 31 +++++++++++++++++++++ include/uapi/linux/rpmsg.h | 14 ++++++++++ 3 files changed, 102 insertions(+)