drm/radeon/kms: respect single crtc cards, only create one crtc. (v2)

Also add single crtc for RN50 chips.

changes in v2:
fix vblank init to respect single crtc flag
fix r100 mode bandwidth to respect single crtc flag

Signed-off-by: Dave Airlie <airlied@redhat.com>

1 files changed, 5 insertions, 1 deletions

diff --git a/drivers/gpu/drm/radeon/radeon_display.c b/drivers/gpu/drm/radeon/radeon_display.c
index 5d8141b13765..44cfcfdf1352 100644
--- a/drivers/gpu/drm/radeon/radeon_display.c
+++ b/drivers/gpu/drm/radeon/radeon_display.c
@@ -724,7 +724,11 @@ int radeon_modeset_init(struct radeon_device *rdev)
         if (ret) {
                 return ret;
         }
-        /* allocate crtcs - TODO single crtc */
+
+        if (rdev->flags & RADEON_SINGLE_CRTC)
+                num_crtc = 1;
+
+        /* allocate crtcs */
         for (i = 0; i < num_crtc; i++) {
                 radeon_crtc_init(rdev->ddev, i);
         }