On Fri, Sep 8, 2017 at 1:18 PM, Georgi Djakov <georgi.djakov@xxxxxxxxxx> wrote: > This patch introduce a new API to get requirements and configure the > interconnect buses across the entire chipset to fit with the current demand. > > The API is using a consumer/provider-based model, where the providers are > the interconnect buses and the consumers could be various drivers. > The consumers request interconnect resources (path) between endpoints and > set the desired constraints on this data flow path. The providers receive > requests from consumers and aggregate these requests for all master-slave > pairs on that path. Then the providers configure each participating in the > topology node according to the requested data flow path, physical links and > constraints. The topology could be complicated and multi-tiered and is SoC > specific. > > Signed-off-by: Georgi Djakov <georgi.djakov@xxxxxxxxxx> > --- > Documentation/interconnect/interconnect.rst | 93 +++++++ > drivers/Kconfig | 2 + > drivers/Makefile | 1 + > drivers/interconnect/Kconfig | 10 + > drivers/interconnect/Makefile | 1 + > drivers/interconnect/interconnect.c | 382 ++++++++++++++++++++++++++++ > include/linux/interconnect-consumer.h | 73 ++++++ > include/linux/interconnect-provider.h | 119 +++++++++ > 8 files changed, 681 insertions(+) > create mode 100644 Documentation/interconnect/interconnect.rst > create mode 100644 drivers/interconnect/Kconfig > create mode 100644 drivers/interconnect/Makefile > create mode 100644 drivers/interconnect/interconnect.c > create mode 100644 include/linux/interconnect-consumer.h > create mode 100644 include/linux/interconnect-provider.h > > [snip] > +/** > + * interconnect_set() - set constraints on a path between two endpoints > + * @path: reference to the path returned by interconnect_get() > + * @creq: request from the consumer, containing its requirements > + * > + * This function is used by an interconnect consumer to express its own needs > + * in term of bandwidth and QoS for a previously requested path between two > + * endpoints. The requests are aggregated and each node is updated accordingly. > + * > + * Returns 0 on success, or an approproate error code otherwise. > + */ > +int interconnect_set(struct interconnect_path *path, > + struct interconnect_creq *creq) drive-by comment... afaict creq could be 'const' BR, -R -- To unsubscribe from this list: send the line "unsubscribe linux-arm-msm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
