25173f71cd
In many cases suspending or resuming of a device is limited to just a few register writes. Current solution assumes that those operations may be blocking, asynchronous and take a lot of time. Due to this assumption runtime PM API cannot be effectively used from the interrupt context. Zephyr has few driver APIs which can be used from an interrupt context and now use of runtime PM is limited in those cases. Patch introduces a new type of PM device - synchronous PM. If device is specified as capable of synchronous PM operations then device runtime getting and putting is executed in the critical section. In that case, runtime API can be used from an interrupt context. Additionally, this approach reduces RAM needed for PM device (104 -> 20 bytes of RAM on ARM Cortex-M). Signed-off-by: Krzysztof Chruściński <krzysztof.chruscinski@nordicsemi.no> |
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| .. | ||
| CMakeLists.txt | ||
| device.c | ||
| device_runtime.c | ||
| Kconfig | ||
| pm.c | ||
| pm_stats.c | ||
| pm_stats.h | ||
| policy.c | ||
| state.c | ||