drm/pci: add support for getting the supported link bw.
This should work for PCIE3.0 as well.
Signed-off-by: Dave Airlie <airlied@redhat.com>
diff --git a/include/drm/drmP.h b/include/drm/drmP.h
index 31ad880..e4e3be3 100644
--- a/include/drm/drmP.h
+++ b/include/drm/drmP.h
@@ -1761,6 +1761,11 @@
const struct pci_device_id *ent,
struct drm_driver *driver);
+#define DRM_PCIE_SPEED_25 1
+#define DRM_PCIE_SPEED_50 2
+#define DRM_PCIE_SPEED_80 4
+
+extern int drm_pcie_get_speed_cap_mask(struct drm_device *dev, u32 *speed_mask);
/* platform section */
extern int drm_platform_init(struct drm_driver *driver, struct platform_device *platform_device);