drm: simplify sysfs code for drm

This simplifies the sysfs code for the drm and add a dri_library_name
attribute which can be used by a userspace app to figure out which
library to load.

From: Jon Smirl <jonsmirl@gmail.com>
Signed-off-by: Dave Airlie <airlied@linux.ie>

1 files changed, 5 insertions, 0 deletions

diff --git a/drivers/char/drm/via_drv.c b/drivers/char/drm/via_drv.c
index 6f3e6b32fa81..e8adebdba127 100644
--- a/drivers/char/drm/via_drv.c
+++ b/drivers/char/drm/via_drv.c
@@ -29,6 +29,10 @@
 
 #include "drm_pciids.h"
 
+static int dri_library_name(struct drm_device *dev, char *buf)
+{
+        return snprintf(buf, PAGE_SIZE, "unichrome");
+}
 
 static struct pci_device_id pciidlist[] = {
         viadrv_PCI_IDS
@@ -61,6 +65,7 @@ static struct drm_driver driver = {
         .irq_uninstall = via_driver_irq_uninstall,
         .irq_handler = via_driver_irq_handler,
         .dma_quiescent = via_driver_dma_quiescent,
+        .dri_library_name = dri_library_name,
         .reclaim_buffers = drm_core_reclaim_buffers,
         .get_map_ofs = drm_core_get_map_ofs,
         .get_reg_ofs = drm_core_get_reg_ofs,