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DRM resource initalisation

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This commit is contained in:
Scott Anderson 2017-07-20 20:51:59 +12:00
parent 601bbad5d8
commit 7b772e1a4b
5 changed files with 238 additions and 9 deletions
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50
backend/drm/drm-properties.c
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@ -49,10 +49,10 @@ static const struct prop_info plane_info[] = {
};
static int cmp_prop_info(const void *arg1, const void *arg2) {
const struct prop_info *a = arg1;
const struct prop_info *b = arg2;
const char *key = arg1;
const struct prop_info *elem = arg2;
return strcmp(a->name, b->name);
return strcmp(key, elem->name);
}
static bool scan_properties(int fd, uint32_t id, uint32_t type, uint32_t *result,
@ -97,3 +97,47 @@ bool wlr_drm_get_plane_props(int fd, uint32_t id, union wlr_drm_plane_props *out
return scan_properties(fd, id, DRM_MODE_OBJECT_PLANE, out->props,
plane_info, sizeof(plane_info) / sizeof(plane_info[0]));
}
bool wlr_drm_get_prop(int fd, uint32_t obj, uint32_t prop, uint64_t *ret) {
drmModeObjectProperties *props = drmModeObjectGetProperties(fd, obj, DRM_MODE_OBJECT_ANY);
if (!props) {
return false;
}
bool found = false;
for (uint32_t i = 0; i < props->count_props; ++i) {
if (props->props[i] == prop) {
*ret = props->prop_values[i];
found = true;
break;
}
}
drmModeFreeObjectProperties(props);
return found;
}
void *wlr_drm_get_prop_blob(int fd, uint32_t obj, uint32_t prop, size_t *ret_len) {
uint64_t blob_id;
if (!wlr_drm_get_prop(fd, obj, prop, &blob_id)) {
return NULL;
}
drmModePropertyBlobRes *blob = drmModeGetPropertyBlob(fd, blob_id);
if (!blob) {
return NULL;
}
void *ptr = malloc(blob->length);
if (!ptr) {
drmModeFreePropertyBlob(blob);
return NULL;
}
memcpy(ptr, blob->data, blob->length);
*ret_len = blob->length;
drmModeFreePropertyBlob(blob);
return ptr;
}