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gralloc: Add support to enable UBWC aligned framebuffer

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Gralloc checks the system property "debug.gralloc.enable_fb_ubwc"
to enable UBWC aligned allocation for framebuffer. The allocation
will be linear by default.

Change-Id: I7fdb5878eec620f264ba3a6425a9810b28b54604
This commit is contained in:
Sushil Chauhan
2015-04-16 16:31:22 -07:00
parent e6b3209514
commit 68c793aea5
1 changed files with 19 additions and 9 deletions
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28
libgralloc/gpu.cpp
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@@ -308,6 +308,25 @@ int gpu_context_t::alloc_impl(int w, int h, int format, int usage,
grallocFormat = HAL_PIXEL_FORMAT_RGBA_8888;
}
bool useFbMem = false;
char property[PROPERTY_VALUE_MAX];
char isUBWC[PROPERTY_VALUE_MAX];
if (usage & GRALLOC_USAGE_HW_FB) {
if ((property_get("debug.gralloc.map_fb_memory", property, NULL) > 0) &&
(!strncmp(property, "1", PROPERTY_VALUE_MAX ) ||
(!strncasecmp(property,"true", PROPERTY_VALUE_MAX )))) {
useFbMem = true;
} else {
if (property_get("debug.gralloc.enable_fb_ubwc", isUBWC, NULL) > 0){
if ((!strncmp(isUBWC, "1", PROPERTY_VALUE_MAX)) ||
(!strncasecmp(isUBWC, "true", PROPERTY_VALUE_MAX))) {
// Allocate UBWC aligned framebuffer
usage |= GRALLOC_USAGE_PRIVATE_ALLOC_UBWC;
}
}
}
}
getGrallocInformationFromFormat(grallocFormat, &bufferType);
size = getBufferSizeAndDimensions(w, h, grallocFormat, usage, alignedw,
alignedh);
@@ -316,15 +335,6 @@ int gpu_context_t::alloc_impl(int w, int h, int format, int usage,
return -EINVAL;
size = (bufferSize >= size)? bufferSize : size;
bool useFbMem = false;
char property[PROPERTY_VALUE_MAX];
if((usage & GRALLOC_USAGE_HW_FB) &&
(property_get("debug.gralloc.map_fb_memory", property, NULL) > 0) &&
(!strncmp(property, "1", PROPERTY_VALUE_MAX ) ||
(!strncasecmp(property,"true", PROPERTY_VALUE_MAX )))) {
useFbMem = true;
}
int err = 0;
if(useFbMem) {
err = gralloc_alloc_framebuffer(usage, pHandle);