There is currently no common framework for mailbox drivers, so this is my attempt to come up with something suitable. There seems to be a need for making this generic, so I have attempted to do just that. Most of this is modeled pretty strongly after the pwm core, with some influences from the clock core. Looking at the existing use-cases, and some new ones, it would appear that the requirements here are rather simple. We need essentially two things for consumers: - put_message - callback for receiving messages The code currently uses atomic notifiers for callbacks. The common omap core deals with fifos and work-queues in order to escape atomic contexts, but from what I can see, this is unneeded. I am also of the opinion that the contexts can be much better managed in the drivers which are working with these contexts, rather than generically. Hopefully this will be suitable for the plethora of other drivers around the kernel which implement mailboxes, as well. In any case, I'm rather interested to see what the rest of the world thinks. Keep in mind that while the pl320 & omap code should compile, I don't currently have a platform on which I can perform proper testing. I also removed the context save/restore code from omap2 mailbox support, because I think it should be able to be done via driver suspend/resume, but haven't done a full investigation just yet. I'm also aware that breaking omap, just to fix it again probably isn't the best course of action, and I'm open to suggestions. -Courtney Courtney Cavin (6): mailbox: add core framework mailbox: document bindings mailbox: pl320: migrate to mbox framework mailbox: omap: remove omap-specific framework mailbox: omap1: move to common mbox framework mailbox: omap2+: move to common mbox framework .../devicetree/bindings/mailbox/mailbox.txt | 44 ++ drivers/mailbox/Kconfig | 17 - drivers/mailbox/Makefile | 2 +- drivers/mailbox/core.c | 573 +++++++++++++++++++++ drivers/mailbox/mailbox-omap1.c | 153 +++--- drivers/mailbox/mailbox-omap2.c | 315 +++++------ drivers/mailbox/omap-mailbox.c | 469 ----------------- drivers/mailbox/omap-mbox.h | 67 --- drivers/mailbox/pl320-ipc.c | 258 +++++++--- include/linux/mailbox.h | 29 +- include/linux/mbox.h | 175 +++++++ include/linux/omap-mailbox.h | 45 +- 12 files changed, 1261 insertions(+), 886 deletions(-) create mode 100644 Documentation/devicetree/bindings/mailbox/mailbox.txt create mode 100644 drivers/mailbox/core.c delete mode 100644 drivers/mailbox/omap-mailbox.c delete mode 100644 drivers/mailbox/omap-mbox.h create mode 100644 include/linux/mbox.h -- 1.8.1.5 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
