xfree86: Store kernel driver name in platform device attribute

When opening a DRM device, query the version and store the driver name
as a new attribute for future reference.

Reviewed-by: Aaron Plattner <aplattner@nvidia.com>
Tested-By: Aaron Plattner <aplattner@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Reviewed-by: Rob Clark <robdclark@gmail.com>
Tested-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Keith Packard <keithp@keithp.com>

1 files changed, 12 insertions, 0 deletions

diff --git a/hw/xfree86/os-support/linux/lnx_platform.c b/hw/xfree86/os-support/linux/lnx_platform.c
index 308275ab4..0aaedab21 100644
--- a/hw/xfree86/os-support/linux/lnx_platform.c
+++ b/hw/xfree86/os-support/linux/lnx_platform.c
@@ -24,6 +24,7 @@ static Bool
 get_drm_info(struct OdevAttributes *attribs, char *path, int delayed_index)
 {
     drmSetVersion sv;
+    drmVersionPtr v;
     char *buf;
     int major, minor, fd;
     int err = 0;
@@ -74,6 +75,17 @@ get_drm_info(struct OdevAttributes *attribs, char *path, int delayed_index)
     xf86_add_platform_device_attrib(delayed_index,
                                     ODEV_ATTRIB_BUSID, buf);
     drmFreeBusid(buf);
+
+    v = drmGetVersion(fd);
+    if (!v) {
+        xf86Msg(X_ERROR, "%s: failed to query DRM version\n", path);
+        goto out;
+    }
+
+    xf86_add_platform_device_attrib(delayed_index, ODEV_ATTRIB_DRIVER,
+                                    v->name);
+    drmFreeVersion(v);
+
 out:
     if (!server_fd)
         close(fd);