drm: add drm_pcie_get_max_link_width helper (v2)
Add a helper to get the max link width of the port.
Similar to the helper to get the max link speed.
v2: fix typo in commit message
Reviewed-by: Jammy Zhou <Jammy.Zhou@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
diff --git a/include/drm/drmP.h b/include/drm/drmP.h
index 30d4a5a..bd5d2c5 100644
--- a/include/drm/drmP.h
+++ b/include/drm/drmP.h
@@ -1098,6 +1098,7 @@
#define DRM_PCIE_SPEED_80 4
extern int drm_pcie_get_speed_cap_mask(struct drm_device *dev, u32 *speed_mask);
+extern int drm_pcie_get_max_link_width(struct drm_device *dev, u32 *mlw);
/* platform section */
extern int drm_platform_init(struct drm_driver *driver, struct platform_device *platform_device);