drm/radeon/kms: display watermark fixes

- rs780/880 were using the wrong bandwidth functions
- convert r1xx-r4xx to use the same pm sclk/mclk structs as
r5xx+
- move bandwidth setup to a common function

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

1 files changed, 3 insertions, 5 deletions

diff --git a/drivers/gpu/drm/radeon/r100.c b/drivers/gpu/drm/radeon/r100.c
index 9d634c8a322a..e35cf1932829 100644
--- a/drivers/gpu/drm/radeon/r100.c
+++ b/drivers/gpu/drm/radeon/r100.c
@@ -2025,6 +2025,7 @@ void r100_mc_init(struct radeon_device *rdev)
         radeon_vram_location(rdev, &rdev->mc, base);
         if (!(rdev->flags & RADEON_IS_AGP))
                 radeon_gtt_location(rdev, &rdev->mc);
+        radeon_update_bandwidth_info(rdev);
 }
 
 
@@ -2416,11 +2417,8 @@ void r100_bandwidth_update(struct radeon_device *rdev)
         /*
          * determine is there is enough bw for current mode
          */
-        mclk_ff.full = rfixed_const(rdev->clock.default_mclk);
-        temp_ff.full = rfixed_const(100);
-        mclk_ff.full = rfixed_div(mclk_ff, temp_ff);
-        sclk_ff.full = rfixed_const(rdev->clock.default_sclk);
-        sclk_ff.full = rfixed_div(sclk_ff, temp_ff);
+        sclk_ff = rdev->pm.sclk;
+        mclk_ff = rdev->pm.mclk;
 
         temp = (rdev->mc.vram_width / 8) * (rdev->mc.vram_is_ddr ? 2 : 1);
         temp_ff.full = rfixed_const(temp);