Introduce the device_sync_call_t object type and its API.
This object type allows one thread to perform synchronous calls into a
driver. Only one thread can do such calls per instance of the
device_sync_call_t object since it makes a global record of what type of
thread is waiting on it.
Based on an idea from Dmitriy Korovkin and Peter Mitsis, moving their
proposal to a more generic API provides the solution for all device
drivers that exposes synchronous API in an interrupt based
implementation.
Change-Id: I793fac76645396bf4eb6be38b5a130ac6bde8f73
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
A complete rewrite of the Overview section. The revised text
provides a more logical and comprehensive introduction to the
main concepts and capabilities of Zephyr, without providing
an excessive level of detail. (Those details should be provided
by the remaining sections of the Kernel Primer.)
This rewrite has also resulted in some small changes to the
About Zephyr and other Kernel Primer sections.
Change-Id: Idd4d5e0f0aabaaee8cd43d12563018ba4d8f7417
Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
Describes clocks available for use. Adds examples of direct clock
use. Provides API tables.
Change-Id: Icca8e1c8e75eed29c91f1387aed682dfdefdadb1
Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
Creates the Kernel Primer, removes overview modules that are no longer
needed and updates the master file to include the new part.
Change-Id: I6d7f53f019089d502e763ecc1789fb152c90c465
Signed-off-by: Rodrigo Caballero <rodrigo.caballero.abraham@intel.com>
