hwc: hdmi: Use res_info sysfs node to get HDMI timing info
This change removes the use of static declarations in the HDMI library
that were used to configure the HDMI class with the best mode.
We now rely on the res_info sysfs node to provide timing information
on request for supported modes. Furthermore, we now dynamically compare
HDMI modes in order of height, width, refresh rate and aspect ratio, when
we want to determine the best configuration.
Note: SurfaceFlinger currently has a limit of 128 modes but HDMI can
potentially provide more that 128 modes. In use cases when HDMI provides
more than 128 modes, the HAL needs to sort and provide the best 128 modes.
Change-Id: If4ed8845fb77024771dde15fe23dfcee515d93d2
diff --git a/libhwcomposer/hwc.cpp b/libhwcomposer/hwc.cpp
index fd3bb69..32e8474 100644
--- a/libhwcomposer/hwc.cpp
+++ b/libhwcomposer/hwc.cpp
@@ -809,10 +809,11 @@
const size_t NUM_DISPLAY_ATTRIBUTES = (sizeof(DISPLAY_ATTRIBUTES) /
sizeof(DISPLAY_ATTRIBUTES)[0]);
- uint32_t xres = 0, yres = 0, refresh = 0;
+ uint32_t xres = 0, yres = 0, refresh = 0, fps = 0;
int ret = 0;
if (hotPluggable) {
- ret = ctx->mHDMIDisplay->getAttrForConfig(config, xres, yres, refresh);
+ ret = ctx->mHDMIDisplay->getAttrForConfig(config, xres,
+ yres, refresh, fps);
if(ret < 0) {
ALOGE("%s Error getting attributes for config %d",
__FUNCTION__, config);