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/*
* Copyright (C) 2025 Igalia S.L.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "LibDRMUtilities.h"
#if USE(LIBDRM)
#include <glib.h>
#include <wtf/StdLibExtras.h>
#include <xf86drm.h>
std::pair<CString, CString> lookupNodesWithLibDRM()
{
std::array<drmDevicePtr, 64> devices { };
int numDevices = drmGetDevices2(0, devices.data(), std::size(devices));
if (numDevices <= 0)
return { };
CString devicePath;
CString renderNodePath;
for (int i = 0; i < numDevices; ++i) {
drmDevice* device = devices[i];
if (!(device->available_nodes & (1 << DRM_NODE_PRIMARY | 1 << DRM_NODE_RENDER)))
continue;
if (!devicePath.isNull()) {
g_warning("Infered DRM device (%s) using libdrm but multiple were found, you can override this with WPE_DRM_DEVICE and WPE_DRM_RENDER_NODE", devicePath.data());
break;
}
if (device->available_nodes & (1 << DRM_NODE_RENDER))
renderNodePath = CString(device->nodes[DRM_NODE_RENDER]);
if (device->available_nodes & (1 << DRM_NODE_PRIMARY))
devicePath = CString(device->nodes[DRM_NODE_PRIMARY]);
}
drmFreeDevices(devices.data(), numDevices);
return { WTFMove(devicePath), WTFMove(renderNodePath) };
}
#endif /* USE(LIBDRM) */
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