drm/radeon/kms: add pll debugging output

commit 51d4bf840a27fe02c883ddc6d9708af056773769 upstream.

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Andi Kleen <ak@linux.intel.com>

diff --git a/drivers/gpu/drm/radeon/radeon_display.c b/drivers/gpu/drm/radeon/radeon_display.c
index 2d95376c3ddf1c52de25c294d2ed7f3931724af5..ce627b2b9dce9b4fbbc294d450ae2b5d8d889d5a 100644 (file)
--- a/drivers/gpu/drm/radeon/radeon_display.c
+++ b/drivers/gpu/drm/radeon/radeon_display.c
@@ -619,6 +619,10 @@ static void radeon_compute_pll_legacy(struct radeon_pll *pll,
        *frac_fb_div_p = best_frac_feedback_div;
        *ref_div_p = best_ref_div;
        *post_div_p = best_post_div;
+       DRM_DEBUG_KMS("%d %d, pll dividers - fb: %d.%d ref: %d, post %d\n",
+                     freq, best_freq / 1000, best_feedback_div, best_frac_feedback_div,
+                     best_ref_div, best_post_div);
+
 }
 
 static bool