drm/radeon/kms: remove new pll algo

The recent changes to the old algo (prefer high post div)
coupled with the range and precision limitations of using
fixed point with the new algo make the new algo less
useful.  So drop the new algo.  This should work as well
or better than the old new/old combinations and simplifies
the code a lot.

Fixes:
https://bugs.freedesktop.org/show_bug.cgi?id=30218
among others.

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

1 files changed, 1 insertions, 14 deletions

diff --git a/drivers/gpu/drm/radeon/radeon_atombios.c b/drivers/gpu/drm/radeon/radeon_atombios.c
index 68932ba7b8a4..89ce9b6d89d9 100644
--- a/drivers/gpu/drm/radeon/radeon_atombios.c
+++ b/drivers/gpu/drm/radeon/radeon_atombios.c
@@ -1112,8 +1112,7 @@ bool radeon_atom_get_clock_info(struct drm_device *dev)
                          * pre-DCE 3.0 r6xx hardware.  This might need to be adjusted per
                          * family.
                          */
-                        if (!radeon_new_pll)
-                                p1pll->pll_out_min = 64800;
+                        p1pll->pll_out_min = 64800;
                 }
 
                 p1pll->pll_in_min =
@@ -1390,18 +1389,6 @@ struct radeon_encoder_atom_dig *radeon_atombios_get_lvds_info(struct
 
                 lvds->ss = radeon_atombios_get_ss_info(encoder, lvds_info->info.ucSS_Id);
 
-                if (ASIC_IS_AVIVO(rdev)) {
-                        if (radeon_new_pll == 0)
-                                lvds->pll_algo = PLL_ALGO_LEGACY;
-                        else
-                                lvds->pll_algo = PLL_ALGO_NEW;
-                } else {
-                        if (radeon_new_pll == 1)
-                                lvds->pll_algo = PLL_ALGO_NEW;
-                        else
-                                lvds->pll_algo = PLL_ALGO_LEGACY;
-                }
-
                 encoder->native_mode = lvds->native_mode;
 
                 if (encoder_enum == 2)