hwcomposer2: add api to control vsync period
Add new functions to improve vsync period switching by the platform:
- Adding a list of supported vsync periods to hwc2_config_t to avoid the need to expose
separate hwc2_config_t for each vsync period.
- Adding an API to set the vsync period with timeline constraints to allow better
synchronization with vsync period change.
- Extending HWC2_CALLBACK_VSYNC callback to provide the current vsync period.
Test: rev up composer to 2.4 and test refresh rate switching
Bug: 141329414
Change-Id: I0e3371dc41c4fbcf97073a120307f7a8923c9325
2 files changed
