ST's platforms currently support a maximum of 5 Mailboxes, one for
each of the supported co-processors situated on the platform. Each
Mailbox is divided up into 4 instances which consist of 32 channels.
Messages are passed between the application and co-processors using
shared memory areas.
Also included in the set is an example Client which should be generic
enough to use as a testing environment for all Mailbox IPs which use
shared memory or the API to pass messages. With small changes, it
should also be able to test more extravagant implementations.
v2 => v3:
- Controller
- Shared (DT <=> Device Driver) defines removed
- Return actual error codes instead of NULL in xlate()
- Not passing 'direction' configuration via DT anymore
- Removed all accompanying configuration checking code
- Test F/W
- Allow Rx-only and Tx-only controllers to be tested
- Cater for controllers requiring pre-Tx 'signal' to be sent
- Supply 'wr-' message debugfs file
- When written to, will Tx message through Mailbox Framework
- When read from, will print out a hexdump of Rx'ed message
v1 => v2:
- New MACRO() to obtain base address for a given instance
- Move locking into the structure it protects
- Stop checking for 'ready' state when sending data
- Don't clear channel data (that belongs to the API)
- #define register offsets instead of providing via pdata
- Register driver with module_platform_driver()
Lee Jones (5):
mailbox: dt: Supply bindings for ST's Mailbox IP
mailbox: Add support for ST's Mailbox IP
ARM: STi: stih407-family: Add nodes for Mailbox
mailbox: Add generic mechanism for testing Mailbox Controllers
ARM: STi: DT: STiH407: Enable Mailbox testing facility
.../devicetree/bindings/mailbox/sti-mailbox.txt | 52 +++
arch/arm/boot/dts/stih407-family.dtsi | 42 ++
drivers/mailbox/Kconfig | 14 +
drivers/mailbox/Makefile | 4 +
drivers/mailbox/mailbox-sti.c | 516 +++++++++++++++++++++
drivers/mailbox/mailbox-test.c | 361 ++++++++++++++
6 files changed, 989 insertions(+)
create mode 100644 Documentation/devicetree/bindings/mailbox/sti-mailbox.txt
create mode 100644 drivers/mailbox/mailbox-sti.c
create mode 100644 drivers/mailbox/mailbox-test.c
--
1.9.1
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